qquicktextinput.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qquicktextinput_p.h"
#include "qquicktextinput_p_p.h"
#include "qquickwindow.h"
 
#include <private/qqmlglobal_p.h>
#include <private/qv4scopedvalue_p.h>
 
#include <QtCore/qcoreapplication.h>
#include <QtCore/qmimedata.h>
#include <QtQml/qqmlinfo.h>
#include <QtGui/qevent.h>
#include <QTextBoundaryFinder>
#include "qsginternaltextnode_p.h"
#include <QtQuick/qsgsimplerectnode.h>
 
#include <QtGui/qstylehints.h>
#include <QtGui/qinputmethod.h>
#include <QtCore/qmath.h>
 
#if QT_CONFIG(accessibility)
#include "qaccessible.h"
#include "qquickaccessibleattached_p.h"
#endif
 
#include <QtGui/private/qtextengine_p.h>
#include <QtGui/private/qinputcontrol_p.h>
 
QT_BEGIN_NAMESPACE
 
DEFINE_BOOL_CONFIG_OPTION(qmlDisableDistanceField, QML_DISABLE_DISTANCEFIELD)
Q_LOGGING_CATEGORY(lcQuickTextInput, "qt.quick.textInput")
 
 
QQuickTextInput::QQuickTextInput(QQuickItem* parent)
: QQuickImplicitSizeItem(*(new QQuickTextInputPrivate), parent)
{
    Q_D(QQuickTextInput);
    d->init();
}
 
QQuickTextInput::QQuickTextInput(QQuickTextInputPrivate &dd, QQuickItem *parent)
: QQuickImplicitSizeItem(dd, parent)
{
    Q_D(QQuickTextInput);
    d->init();
}
 
QQuickTextInput::~QQuickTextInput()
{
}
 
void QQuickTextInput::componentComplete()
{
    Q_D(QQuickTextInput);
 
    QQuickImplicitSizeItem::componentComplete();
 
    d->checkIsValid();
    d->updateLayout();
    updateCursorRectangle();
    if (d->cursorComponent && isCursorVisible())
        QQuickTextUtil::createCursor(d);
}
 
QString QQuickTextInput::text() const
{
    Q_D(const QQuickTextInput);
 
    QString content = d->m_text;
    QString res = d->m_maskData ? d->stripString(content) : content;
    return (res.isNull() ? QString::fromLatin1("") : res);
}
 
void QQuickTextInput::invalidate()
{
    Q_D(QQuickTextInput);
    d->updateLayout();
    invalidateFontCaches();
}
 
void QQuickTextInput::setText(const QString &s)
{
    Q_D(QQuickTextInput);
    if (s == text())
        return;
 
#if QT_CONFIG(im)
    d->cancelPreedit();
#endif
    d->internalSetText(s, -1, false);
}
 
 
QQuickTextInput::RenderType QQuickTextInput::renderType() const
{
    Q_D(const QQuickTextInput);
    return d->renderType;
}
 
void QQuickTextInput::setRenderType(QQuickTextInput::RenderType renderType)
{
    Q_D(QQuickTextInput);
    if (d->renderType == renderType)
        return;
 
    d->renderType = renderType;
    emit renderTypeChanged();
 
    if (isComponentComplete())
        d->updateLayout();
}
 
int QQuickTextInput::length() const
{
    Q_D(const QQuickTextInput);
    return d->m_text.size();
}
 
QString QQuickTextInput::getText(int start, int end) const
{
    Q_D(const QQuickTextInput);
 
    if (start > end)
        qSwap(start, end);
 
    return d->m_text.mid(start, end - start);
}
 
QString QQuickTextInputPrivate::realText() const
{
    QString res = m_maskData ? stripString(m_text) : m_text;
    return (res.isNull() ? QString::fromLatin1("") : res);
}
 
QFont QQuickTextInput::font() const
{
    Q_D(const QQuickTextInput);
    return d->sourceFont;
}
 
void QQuickTextInput::setFont(const QFont &font)
{
    Q_D(QQuickTextInput);
    if (d->sourceFont == font)
        return;
 
    d->sourceFont = font;
    QFont oldFont = d->font;
    d->font = font;
    if (d->font.pointSizeF() != -1) {
        // 0.5pt resolution
        qreal size = qRound(d->font.pointSizeF()*2.0);
        d->font.setPointSizeF(size/2.0);
    }
    if (oldFont != d->font) {
        d->updateLayout();
        updateCursorRectangle();
#if QT_CONFIG(im)
        updateInputMethod(Qt::ImCursorRectangle | Qt::ImFont | Qt::ImAnchorRectangle);
#endif
    }
    emit fontChanged(d->sourceFont);
}
 
QColor QQuickTextInput::color() const
{
    Q_D(const QQuickTextInput);
    return d->color;
}
 
void QQuickTextInput::setColor(const QColor &c)
{
    Q_D(QQuickTextInput);
    if (c != d->color) {
        d->color = c;
        d->textLayoutDirty = true;
        d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
        polish();
        update();
        emit colorChanged();
    }
}
 
 
QColor QQuickTextInput::selectionColor() const
{
    Q_D(const QQuickTextInput);
    return d->selectionColor;
}
 
void QQuickTextInput::setSelectionColor(const QColor &color)
{
    Q_D(QQuickTextInput);
    if (d->selectionColor == color)
        return;
 
    d->selectionColor = color;
    if (d->hasSelectedText()) {
        d->textLayoutDirty = true;
        d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
        polish();
        update();
    }
    emit selectionColorChanged();
}
QColor QQuickTextInput::selectedTextColor() const
{
    Q_D(const QQuickTextInput);
    return d->selectedTextColor;
}
 
void QQuickTextInput::setSelectedTextColor(const QColor &color)
{
    Q_D(QQuickTextInput);
    if (d->selectedTextColor == color)
        return;
 
    d->selectedTextColor = color;
    if (d->hasSelectedText()) {
        d->textLayoutDirty = true;
        d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
        polish();
        update();
    }
    emit selectedTextColorChanged();
}
 
QQuickTextInput::HAlignment QQuickTextInput::hAlign() const
{
    Q_D(const QQuickTextInput);
    return d->hAlign;
}
 
void QQuickTextInput::setHAlign(HAlignment align)
{
    Q_D(QQuickTextInput);
 
    if (d->setHAlign(align, true) && isComponentComplete()) {
        d->updateLayout();
        updateCursorRectangle();
    }
}
 
void QQuickTextInput::resetHAlign()
{
    Q_D(QQuickTextInput);
    d->hAlignImplicit = true;
    if (d->determineHorizontalAlignment() && isComponentComplete()) {
        d->updateLayout();
        updateCursorRectangle();
    }
}
 
QQuickTextInput::HAlignment QQuickTextInput::effectiveHAlign() const
{
    Q_D(const QQuickTextInput);
    QQuickTextInput::HAlignment effectiveAlignment = d->hAlign;
    if (!d->hAlignImplicit && d->effectiveLayoutMirror) {
        switch (d->hAlign) {
        case QQuickTextInput::AlignLeft:
            effectiveAlignment = QQuickTextInput::AlignRight;
            break;
        case QQuickTextInput::AlignRight:
            effectiveAlignment = QQuickTextInput::AlignLeft;
            break;
        default:
            break;
        }
    }
    return effectiveAlignment;
}
 
bool QQuickTextInputPrivate::setHAlign(QQuickTextInput::HAlignment align, bool forceAlign)
{
    Q_Q(QQuickTextInput);
    if (align > QQuickTextInput::AlignHCenter)
        return false; // justify is not supported
 
    if (hAlign == align && !forceAlign)
        return false;
 
    const bool wasImplicit = hAlignImplicit;
    const auto oldEffectiveHAlign = q->effectiveHAlign();
 
    hAlignImplicit = !forceAlign;
    if (hAlign != align) {
        hAlign = align;
        emit q->horizontalAlignmentChanged(align);
    }
 
    if (q->effectiveHAlign() != oldEffectiveHAlign) {
        emit q->effectiveHorizontalAlignmentChanged();
        return true;
    }
 
    if (forceAlign && wasImplicit) {
        // QTBUG-120052 - when horizontal text alignment is set explicitly,
        // we need notify any other controls that may depend on it, like QQuickPlaceholderText
        emit q->effectiveHorizontalAlignmentChanged();
    }
    return false;
}
 
Qt::LayoutDirection QQuickTextInputPrivate::textDirection() const
{
    QString text = m_text;
#if QT_CONFIG(im)
    if (text.isEmpty())
        text = m_textLayout.preeditAreaText();
#endif
 
    const QChar *character = text.constData();
    while (!character->isNull()) {
        switch (character->direction()) {
        case QChar::DirL:
            return Qt::LeftToRight;
        case QChar::DirR:
        case QChar::DirAL:
        case QChar::DirAN:
            return Qt::RightToLeft;
        default:
            break;
        }
        character++;
    }
    return Qt::LayoutDirectionAuto;
}
 
Qt::LayoutDirection QQuickTextInputPrivate::layoutDirection() const
{
    Qt::LayoutDirection direction = m_layoutDirection;
    if (direction == Qt::LayoutDirectionAuto) {
        direction = textDirection();
#if QT_CONFIG(im)
        if (direction == Qt::LayoutDirectionAuto)
            direction = QGuiApplication::inputMethod()->inputDirection();
#endif
    }
    return (direction == Qt::LayoutDirectionAuto) ? Qt::LeftToRight : direction;
}
 
bool QQuickTextInputPrivate::determineHorizontalAlignment()
{
    if (!hAlignImplicit)
        return false;
 
    // if no explicit alignment has been set, follow the natural layout direction of the text
    Qt::LayoutDirection direction = textDirection();
#if QT_CONFIG(im)
    if (direction == Qt::LayoutDirectionAuto)
        direction = QGuiApplication::inputMethod()->inputDirection();
#endif
 
    const auto implicitHAlign = direction == Qt::RightToLeft ?
            QQuickTextInput::AlignRight : QQuickTextInput::AlignLeft;
    return setHAlign(implicitHAlign);
}
 
QQuickTextInput::VAlignment QQuickTextInput::vAlign() const
{
    Q_D(const QQuickTextInput);
    return d->vAlign;
}
 
void QQuickTextInput::setVAlign(QQuickTextInput::VAlignment alignment)
{
    Q_D(QQuickTextInput);
    if (alignment == d->vAlign)
        return;
    d->vAlign = alignment;
    emit verticalAlignmentChanged(d->vAlign);
    if (isComponentComplete()) {
        updateCursorRectangle();
        d->updateBaselineOffset();
    }
}
 
QQuickTextInput::WrapMode QQuickTextInput::wrapMode() const
{
    Q_D(const QQuickTextInput);
    return d->wrapMode;
}
 
void QQuickTextInput::setWrapMode(WrapMode mode)
{
    Q_D(QQuickTextInput);
    if (mode == d->wrapMode)
        return;
    d->wrapMode = mode;
    d->updateLayout();
    updateCursorRectangle();
    emit wrapModeChanged();
}
 
void QQuickTextInputPrivate::mirrorChange()
{
    Q_Q(QQuickTextInput);
    if (q->isComponentComplete()) {
        if (!hAlignImplicit && (hAlign == QQuickTextInput::AlignRight || hAlign == QQuickTextInput::AlignLeft)) {
            q->updateCursorRectangle();
            emit q->effectiveHorizontalAlignmentChanged();
        }
    }
}
 
bool QQuickTextInput::isReadOnly() const
{
    Q_D(const QQuickTextInput);
    return d->m_readOnly;
}
 
void QQuickTextInput::setReadOnly(bool ro)
{
    Q_D(QQuickTextInput);
    if (d->m_readOnly == ro)
        return;
 
#if QT_CONFIG(im)
    setFlag(QQuickItem::ItemAcceptsInputMethod, !ro);
#endif
    d->m_readOnly = ro;
    d->setCursorPosition(d->end());
#if QT_CONFIG(im)
    updateInputMethod(Qt::ImEnabled);
#endif
    q_canPasteChanged();
    d->emitUndoRedoChanged();
    emit readOnlyChanged(ro);
    if (ro) {
        setCursorVisible(false);
    } else if (hasActiveFocus()) {
        setCursorVisible(true);
    }
    update();
}
 
int QQuickTextInput::maxLength() const
{
    Q_D(const QQuickTextInput);
    return d->m_maxLength;
}
 
void QQuickTextInput::setMaxLength(int ml)
{
    Q_D(QQuickTextInput);
    if (d->m_maxLength == ml || d->m_maskData)
        return;
 
    d->m_maxLength = ml;
    d->internalSetText(d->m_text, -1, false);
 
    emit maximumLengthChanged(ml);
}
 
bool QQuickTextInput::isCursorVisible() const
{
    Q_D(const QQuickTextInput);
    return d->cursorVisible;
}
 
void QQuickTextInput::setCursorVisible(bool on)
{
    Q_D(QQuickTextInput);
    if (d->cursorVisible == on)
        return;
    d->cursorVisible = on;
    if (on && isComponentComplete())
        QQuickTextUtil::createCursor(d);
    if (!d->cursorItem)
        d->updateCursorBlinking();
    emit cursorVisibleChanged(d->cursorVisible);
}
 
int QQuickTextInput::cursorPosition() const
{
    Q_D(const QQuickTextInput);
    return d->m_cursor;
}
 
void QQuickTextInput::setCursorPosition(int cp)
{
    Q_D(QQuickTextInput);
    if (cp < 0 || cp > text().size())
        return;
    d->moveCursor(cp);
}
 
QRectF QQuickTextInput::cursorRectangle() const
{
    Q_D(const QQuickTextInput);
 
    int c = d->m_cursor;
#if QT_CONFIG(im)
    c += d->m_preeditCursor;
#endif
    if (d->m_echoMode == NoEcho)
        c = 0;
    QTextLine l = d->m_textLayout.lineForTextPosition(c);
    if (!l.isValid())
        return QRectF();
    qreal x = l.cursorToX(c) - d->hscroll + leftPadding();
    qreal y = l.y() - d->vscroll + topPadding();
    qreal w = 1;
    if (d->overwriteMode) {
        if (c < text().size())
            w = l.cursorToX(c + 1) - x;
        else
            w = QFontMetrics(font()).horizontalAdvance(QLatin1Char(' ')); // in sync with QTextLine::draw()
    }
    return QRectF(x, y, w, l.height());
}
 
int QQuickTextInput::selectionStart() const
{
    Q_D(const QQuickTextInput);
    return d->lastSelectionStart;
}
int QQuickTextInput::selectionEnd() const
{
    Q_D(const QQuickTextInput);
    return d->lastSelectionEnd;
}
void QQuickTextInput::select(int start, int end)
{
    Q_D(QQuickTextInput);
    if (start < 0 || end < 0 || start > d->m_text.size() || end > d->m_text.size())
        return;
    d->setSelection(start, end-start);
}
 
QString QQuickTextInput::selectedText() const
{
    Q_D(const QQuickTextInput);
    return d->selectedText();
}
 
bool QQuickTextInput::focusOnPress() const
{
    Q_D(const QQuickTextInput);
    return d->focusOnPress;
}
 
void QQuickTextInput::setFocusOnPress(bool b)
{
    Q_D(QQuickTextInput);
    if (d->focusOnPress == b)
        return;
 
    d->focusOnPress = b;
 
    emit activeFocusOnPressChanged(d->focusOnPress);
}
bool QQuickTextInput::autoScroll() const
{
    Q_D(const QQuickTextInput);
    return d->autoScroll;
}
 
void QQuickTextInput::setAutoScroll(bool b)
{
    Q_D(QQuickTextInput);
    if (d->autoScroll == b)
        return;
 
    d->autoScroll = b;
    //We need to repaint so that the scrolling is taking into account.
    updateCursorRectangle();
    emit autoScrollChanged(d->autoScroll);
}
 
#if QT_CONFIG(validator)
QValidator* QQuickTextInput::validator() const
{
    Q_D(const QQuickTextInput);
    return d->m_validator;
}
 
void QQuickTextInput::setValidator(QValidator* v)
{
    Q_D(QQuickTextInput);
    if (d->m_validator == v)
        return;
 
    if (d->m_validator) {
        qmlobject_disconnect(
                d->m_validator, QValidator, SIGNAL(changed()),
                this, QQuickTextInput, SLOT(q_validatorChanged()));
    }
 
    d->m_validator = v;
 
    if (d->m_validator) {
        qmlobject_connect(
                d->m_validator, QValidator, SIGNAL(changed()),
                this, QQuickTextInput, SLOT(q_validatorChanged()));
    }
 
    if (isComponentComplete())
        d->checkIsValid();
 
    emit validatorChanged();
}
 
void QQuickTextInput::q_validatorChanged()
{
    Q_D(QQuickTextInput);
    d->checkIsValid();
}
#endif // validator
 
QRectF QQuickTextInputPrivate::anchorRectangle() const
{
    Q_Q(const QQuickTextInput);
    QRectF rect;
    int a;
    // Unfortunately we cannot use selectionStart() and selectionEnd()
    // since they always assume that the selectionStart is logically before selectionEnd.
    // To rely on that would cause havoc if the user was interactively moving the end selection
    // handle to become before the start selection
    if (m_selstart == m_selend)
        // This is to handle the case when there is "no selection" while moving the handle onto the
        // same position as the other handle (in which case it would hide the selection handles)
        a = m_cursor;
    else
        a = m_selstart == m_cursor ? m_selend : m_selstart;
    if (a >= 0) {
#if QT_CONFIG(im)
        a += m_preeditCursor;
#endif
        if (m_echoMode == QQuickTextInput::NoEcho)
            a = 0;
        QTextLine l = m_textLayout.lineForTextPosition(a);
        if (l.isValid()) {
            qreal x = l.cursorToX(a) - hscroll + q->leftPadding();
            qreal y = l.y() - vscroll + q->topPadding();
            rect.setRect(x, y, 1, l.height());
        }
    }
    return rect;
}
 
void QQuickTextInputPrivate::checkIsValid()
{
    Q_Q(QQuickTextInput);
 
    ValidatorState state = hasAcceptableInput(m_text);
    if (!m_maskData)
        m_validInput = state != InvalidInput;
    if (state != AcceptableInput) {
        if (m_acceptableInput) {
            m_acceptableInput = false;
            emit q->acceptableInputChanged();
        }
    } else if (!m_acceptableInput) {
        m_acceptableInput = true;
        emit q->acceptableInputChanged();
    }
}
 
QString QQuickTextInput::inputMask() const
{
    Q_D(const QQuickTextInput);
    return d->inputMask();
}
 
void QQuickTextInput::setInputMask(const QString &im)
{
    Q_D(QQuickTextInput);
    QString canonicalInputMask = im;
    if (im.lastIndexOf(QLatin1Char(';')) == -1)
        canonicalInputMask.append(QLatin1String("; "));
    if (d->inputMask() == canonicalInputMask)
        return;
 
    d->setInputMask(im);
    emit inputMaskChanged(d->inputMask());
}
 
bool QQuickTextInput::hasAcceptableInput() const
{
    Q_D(const QQuickTextInput);
    return d->m_acceptableInput;
}
 
#if QT_CONFIG(im)
Qt::InputMethodHints QQuickTextInputPrivate::effectiveInputMethodHints() const
{
    Qt::InputMethodHints hints = inputMethodHints;
    if (m_echoMode == QQuickTextInput::Password || m_echoMode == QQuickTextInput::NoEcho)
        hints |= Qt::ImhHiddenText;
    else if (m_echoMode == QQuickTextInput::PasswordEchoOnEdit)
        hints &= ~Qt::ImhHiddenText;
    if (m_echoMode != QQuickTextInput::Normal)
        hints |= (Qt::ImhNoAutoUppercase | Qt::ImhNoPredictiveText | Qt::ImhSensitiveData);
    return hints;
}
#endif
 
QQuickTextInput::EchoMode QQuickTextInput::echoMode() const
{
    Q_D(const QQuickTextInput);
    return QQuickTextInput::EchoMode(d->m_echoMode);
}
 
void QQuickTextInput::setEchoMode(QQuickTextInput::EchoMode echo)
{
    Q_D(QQuickTextInput);
    if (echoMode() == echo)
        return;
    d->cancelPasswordEchoTimer();
    d->m_echoMode = echo;
    d->m_passwordEchoEditing = false;
#if QT_CONFIG(im)
    updateInputMethod(Qt::ImHints);
#endif
    d->updateDisplayText();
    updateCursorRectangle();
 
    // If this control is used for password input, we want to minimize
    // the possibility of string reallocation not to leak (parts of)
    // the password.
    if (d->m_echoMode != QQuickTextInput::Normal)
        d->m_text.reserve(30);
 
    emit echoModeChanged(echoMode());
}
 
Qt::InputMethodHints QQuickTextInput::inputMethodHints() const
{
#if !QT_CONFIG(im)
    return Qt::ImhNone;
#else
    Q_D(const QQuickTextInput);
    return d->inputMethodHints;
#endif // im
}
 
void QQuickTextInput::setInputMethodHints(Qt::InputMethodHints hints)
{
#if !QT_CONFIG(im)
    Q_UNUSED(hints);
#else
    Q_D(QQuickTextInput);
 
    if (hints == d->inputMethodHints)
        return;
 
    d->inputMethodHints = hints;
    updateInputMethod(Qt::ImHints);
    emit inputMethodHintsChanged();
#endif // im
}
 
QQmlComponent* QQuickTextInput::cursorDelegate() const
{
    Q_D(const QQuickTextInput);
    return d->cursorComponent;
}
 
void QQuickTextInput::setCursorDelegate(QQmlComponent* c)
{
    Q_D(QQuickTextInput);
    QQuickTextUtil::setCursorDelegate(d, c);
}
 
void QQuickTextInput::createCursor()
{
    Q_D(QQuickTextInput);
    d->cursorPending = true;
    QQuickTextUtil::createCursor(d);
}
 
QRectF QQuickTextInput::positionToRectangle(int pos) const
{
    Q_D(const QQuickTextInput);
    if (d->m_echoMode == NoEcho)
        pos = 0;
#if QT_CONFIG(im)
    else if (pos > d->m_cursor)
        pos += d->preeditAreaText().size();
#endif
    QTextLine l = d->m_textLayout.lineForTextPosition(pos);
    if (!l.isValid())
        return QRectF();
    qreal x = l.cursorToX(pos) - d->hscroll;
    qreal y = l.y() - d->vscroll;
    qreal w = 1;
    if (d->overwriteMode) {
        if (pos < text().size())
            w = l.cursorToX(pos + 1) - x;
        else
            w = QFontMetrics(font()).horizontalAdvance(QLatin1Char(' ')); // in sync with QTextLine::draw()
    }
    return QRectF(x, y, w, l.height());
}
 
void QQuickTextInput::positionAt(QQmlV4FunctionPtr args) const
{
    Q_D(const QQuickTextInput);
 
    qreal x = 0;
    qreal y = 0;
    QTextLine::CursorPosition position = QTextLine::CursorBetweenCharacters;
 
    if (args->length() < 1)
        return;
 
    int i = 0;
    QV4::Scope scope(args->v4engine());
    QV4::ScopedValue arg(scope, (*args)[0]);
    x = arg->toNumber();
 
    if (++i < args->length()) {
        arg = (*args)[i];
        y = arg->toNumber();
    }
 
    if (++i < args->length()) {
        arg = (*args)[i];
        position = QTextLine::CursorPosition(arg->toInt32());
    }
 
    int pos = d->positionAt(x, y, position);
    const int cursor = d->m_cursor;
    if (pos > cursor) {
#if QT_CONFIG(im)
        const int preeditLength = d->preeditAreaText().size();
        pos = pos > cursor + preeditLength
                ? pos - preeditLength
                : cursor;
#else
        pos = cursor;
#endif
    }
    args->setReturnValue(QV4::Encode(pos));
}
 
int QQuickTextInputPrivate::positionAt(qreal x, qreal y, QTextLine::CursorPosition position) const
{
    Q_Q(const QQuickTextInput);
    x += hscroll - q->leftPadding();
    y += vscroll - q->topPadding();
    QTextLine line = m_textLayout.lineAt(0);
    for (int i = 1; i < m_textLayout.lineCount(); ++i) {
        QTextLine nextLine = m_textLayout.lineAt(i);
 
        if (y < (line.rect().bottom() + nextLine.y()) / 2)
            break;
        line = nextLine;
    }
    return line.isValid() ? line.xToCursor(x, position) : 0;
}
 
bool QQuickTextInput::overwriteMode() const
{
    Q_D(const QQuickTextInput);
    return d->overwriteMode;
}
 
void QQuickTextInput::setOverwriteMode(bool overwrite)
{
    Q_D(QQuickTextInput);
    if (d->overwriteMode == overwrite)
        return;
    d->overwriteMode = overwrite;
    emit overwriteModeChanged(overwrite);
}
 
void QQuickTextInput::keyPressEvent(QKeyEvent* ev)
{
    Q_D(QQuickTextInput);
    // Don't allow MacOSX up/down support, and we don't allow a completer.
    bool ignore = (ev->key() == Qt::Key_Up || ev->key() == Qt::Key_Down) && ev->modifiers() == Qt::NoModifier;
    if (!ignore && (d->lastSelectionStart == d->lastSelectionEnd) && (ev->key() == Qt::Key_Right || ev->key() == Qt::Key_Left)) {
        // Ignore when moving off the end unless there is a selection,
        // because then moving will do something (deselect).
        int cursorPosition = d->m_cursor;
        if (cursorPosition == 0)
            ignore = ev->key() == (d->layoutDirection() == Qt::LeftToRight ? Qt::Key_Left : Qt::Key_Right);
        if (!ignore && cursorPosition == d->m_text.size())
            ignore = ev->key() == (d->layoutDirection() == Qt::LeftToRight ? Qt::Key_Right : Qt::Key_Left);
    }
    if (ignore) {
        ev->ignore();
    } else {
        d->processKeyEvent(ev);
    }
    if (!ev->isAccepted())
        QQuickImplicitSizeItem::keyPressEvent(ev);
}
 
#if QT_CONFIG(im)
void QQuickTextInput::inputMethodEvent(QInputMethodEvent *ev)
{
    Q_D(QQuickTextInput);
    const bool wasComposing = d->hasImState;
    d->processInputMethodEvent(ev);
    if (!ev->isAccepted())
        QQuickImplicitSizeItem::inputMethodEvent(ev);
 
    if (wasComposing != d->hasImState)
        emit inputMethodComposingChanged();
}
#endif
 
void QQuickTextInput::mouseDoubleClickEvent(QMouseEvent *event)
{
    Q_D(QQuickTextInput);
 
    if (d->selectByMouse && event->button() == Qt::LeftButton &&
            QQuickDeliveryAgentPrivate::isEventFromMouseOrTouchpad(event)) {
#if QT_CONFIG(im)
        d->commitPreedit();
#endif
        int cursor = d->positionAt(event->position());
        d->selectWordAtPos(cursor);
        event->setAccepted(true);
        if (!d->hasPendingTripleClick()) {
            d->tripleClickStartPoint = event->position();
            d->tripleClickTimer.start();
        }
    } else {
        if (d->sendMouseEventToInputContext(event))
            return;
        QQuickImplicitSizeItem::mouseDoubleClickEvent(event);
    }
}
 
void QQuickTextInput::mousePressEvent(QMouseEvent *event)
{
    Q_D(QQuickTextInput);
 
    d->pressPos = event->position();
 
    if (d->sendMouseEventToInputContext(event))
        return;
 
    const bool isMouse = QQuickDeliveryAgentPrivate::isEventFromMouseOrTouchpad(event);
    if (d->selectByMouse &&
            (isMouse
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
             || d->selectByTouchDrag
#endif
             )) {
        setKeepMouseGrab(false);
        d->selectPressed = true;
        QPointF distanceVector = d->pressPos - d->tripleClickStartPoint;
        if (d->hasPendingTripleClick()
                && distanceVector.manhattanLength() < QGuiApplication::styleHints()->startDragDistance()) {
            event->setAccepted(true);
            selectAll();
            return;
        }
    }
 
    if (isMouse
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
        || d->selectByTouchDrag
#endif
        ) {
        bool mark = (event->modifiers() & Qt::ShiftModifier) && d->selectByMouse;
        int cursor = d->positionAt(event->position());
        d->moveCursor(cursor, mark);
    }
 
    if (d->focusOnPress && !qGuiApp->styleHints()->setFocusOnTouchRelease())
        ensureActiveFocus(Qt::MouseFocusReason);
 
    event->setAccepted(true);
}
 
void QQuickTextInput::mouseMoveEvent(QMouseEvent *event)
{
    Q_D(QQuickTextInput);
    if (!QQuickDeliveryAgentPrivate::isEventFromMouseOrTouchpad(event)
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
            && ! d->selectByTouchDrag
#endif
            )
        return;
 
    if (d->selectPressed) {
        if (qAbs(int(event->position().x() - d->pressPos.x())) > QGuiApplication::styleHints()->startDragDistance())
            setKeepMouseGrab(true);
 
#if QT_CONFIG(im)
        if (d->composeMode()) {
            // start selection
            int startPos = d->positionAt(d->pressPos);
            int currentPos = d->positionAt(event->position());
            if (startPos != currentPos)
                d->setSelection(startPos, currentPos - startPos);
        } else
#endif
        {
            moveCursorSelection(d->positionAt(event->position()), d->mouseSelectionMode);
        }
        event->setAccepted(true);
    } else {
        QQuickImplicitSizeItem::mouseMoveEvent(event);
    }
}
 
void QQuickTextInput::mouseReleaseEvent(QMouseEvent *event)
{
    Q_D(QQuickTextInput);
    if (d->sendMouseEventToInputContext(event))
        return;
    if (d->selectPressed) {
        d->selectPressed = false;
        setKeepMouseGrab(false);
    }
    const bool isMouse = QQuickDeliveryAgentPrivate::isEventFromMouseOrTouchpad(event)
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
        || d->selectByTouchDrag
#endif
    ;
 
#if QT_CONFIG(clipboard)
    if (isMouse && QGuiApplication::clipboard()->supportsSelection()) {
        if (event->button() == Qt::LeftButton) {
            d->copy(QClipboard::Selection);
        } else if (!d->m_readOnly && event->button() == Qt::MiddleButton) {
            d->deselect();
            d->insert(QGuiApplication::clipboard()->text(QClipboard::Selection));
        }
    }
#endif
 
    // On a touchscreen or with a stylus, set cursor position and focus on release, not on press;
    // if Flickable steals the grab in the meantime, the cursor won't move.
    // Check d->hasSelectedText() to keep touch-and-hold word selection working.
    if (!isMouse && !d->hasSelectedText())
        d->moveCursor(d->positionAt(event->position()), false);
 
    if (d->focusOnPress && qGuiApp->styleHints()->setFocusOnTouchRelease())
        ensureActiveFocus(Qt::MouseFocusReason);
 
    if (!event->isAccepted())
        QQuickImplicitSizeItem::mouseReleaseEvent(event);
}
 
bool QQuickTextInputPrivate::sendMouseEventToInputContext(QMouseEvent *event)
{
#if QT_CONFIG(im)
    if (composeMode()) {
        int tmp_cursor = positionAt(event->position());
        int mousePos = tmp_cursor - m_cursor;
        if (mousePos >= 0 && mousePos <= m_textLayout.preeditAreaText().size()) {
            if (event->type() == QEvent::MouseButtonRelease) {
                QGuiApplication::inputMethod()->invokeAction(QInputMethod::Click, mousePos);
            }
            return true;
        }
    }
#else
    Q_UNUSED(event);
#endif
 
    return false;
}
 
void QQuickTextInput::mouseUngrabEvent()
{
    Q_D(QQuickTextInput);
    d->selectPressed = false;
    setKeepMouseGrab(false);
}
 
bool QQuickTextInput::event(QEvent* ev)
{
#if QT_CONFIG(shortcut)
    Q_D(QQuickTextInput);
    if (ev->type() == QEvent::ShortcutOverride) {
        if (d->m_readOnly) {
            ev->ignore();
            return false;
        }
        QKeyEvent* ke = static_cast<QKeyEvent*>(ev);
        if (ke == QKeySequence::Copy
            || ke == QKeySequence::Paste
            || ke == QKeySequence::Cut
            || ke == QKeySequence::Redo
            || ke == QKeySequence::Undo
            || ke == QKeySequence::MoveToNextWord
            || ke == QKeySequence::MoveToPreviousWord
            || ke == QKeySequence::MoveToStartOfDocument
            || ke == QKeySequence::MoveToEndOfDocument
            || ke == QKeySequence::SelectNextWord
            || ke == QKeySequence::SelectPreviousWord
            || ke == QKeySequence::SelectStartOfLine
            || ke == QKeySequence::SelectEndOfLine
            || ke == QKeySequence::SelectStartOfBlock
            || ke == QKeySequence::SelectEndOfBlock
            || ke == QKeySequence::SelectStartOfDocument
            || ke == QKeySequence::SelectAll
            || ke == QKeySequence::SelectEndOfDocument
            || ke == QKeySequence::DeleteCompleteLine) {
            ke->accept();
            return true;
        } else if (ke->modifiers() == Qt::NoModifier || ke->modifiers() == Qt::ShiftModifier
                   || ke->modifiers() == Qt::KeypadModifier) {
            if (ke->key() < Qt::Key_Escape) {
                ke->accept();
                return true;
            } else {
                switch (ke->key()) {
                case Qt::Key_Delete:
                case Qt::Key_Home:
                case Qt::Key_End:
                case Qt::Key_Backspace:
                case Qt::Key_Left:
                case Qt::Key_Right:
                    ke->accept();
                    return true;
                default:
                    break;
                }
            }
        }
        ev->ignore();
    }
#endif
 
    return QQuickImplicitSizeItem::event(ev);
}
 
void QQuickTextInput::geometryChange(const QRectF &newGeometry,
                                     const QRectF &oldGeometry)
{
    Q_D(QQuickTextInput);
    if (!d->inLayout) {
        if (newGeometry.width() != oldGeometry.width())
            d->updateLayout();
        else if (newGeometry.height() != oldGeometry.height() && d->vAlign != QQuickTextInput::AlignTop)
            d->updateBaselineOffset();
        updateCursorRectangle();
    }
    QQuickImplicitSizeItem::geometryChange(newGeometry, oldGeometry);
}
 
void QQuickTextInput::itemChange(ItemChange change, const ItemChangeData &value)
{
    Q_D(QQuickTextInput);
    Q_UNUSED(value);
    switch (change) {
    case ItemDevicePixelRatioHasChanged:
        if (d->renderType == NativeRendering) {
            // Native rendering optimizes for a given pixel grid, so its results must not be scaled.
            // Text layout code respects the current device pixel ratio automatically, we only need
            // to rerun layout after the ratio changed.
            d->updateLayout();
        }
        break;
 
    default:
        break;
    }
    QQuickImplicitSizeItem::itemChange(change, value);
}
 
void QQuickTextInputPrivate::ensureVisible(int position, int preeditCursor, int preeditLength)
{
    Q_Q(QQuickTextInput);
    QTextLine textLine = m_textLayout.lineForTextPosition(position + preeditCursor);
    const qreal width = qMax<qreal>(0, q->width() - q->leftPadding() - q->rightPadding());
    qreal cix = 0;
    qreal widthUsed = 0;
    if (textLine.isValid()) {
        cix = textLine.cursorToX(position + preeditLength);
        const qreal cursorWidth = cix >= 0 ? cix : width - cix;
        widthUsed = qMax(textLine.naturalTextWidth(), cursorWidth);
    }
    int previousScroll = hscroll;
 
    if (widthUsed <= width) {
        hscroll = 0;
    } else {
        Q_ASSERT(textLine.isValid());
        if (cix - hscroll >= width) {
            // text doesn't fit, cursor is to the right of br (scroll right)
            hscroll = cix - width;
        } else if (cix - hscroll < 0 && hscroll < widthUsed) {
            // text doesn't fit, cursor is to the left of br (scroll left)
            hscroll = cix;
        } else if (widthUsed - hscroll < width) {
            // text doesn't fit, text document is to the left of br; align
            // right
            hscroll = widthUsed - width;
        } else if (width - hscroll > widthUsed) {
            // text doesn't fit, text document is to the right of br; align
            // left
            hscroll = width - widthUsed;
        }
#if QT_CONFIG(im)
        if (preeditLength > 0) {
            // check to ensure long pre-edit text doesn't push the cursor
            // off to the left
             cix = textLine.cursorToX(position + qMax(0, preeditCursor - 1));
             if (cix < hscroll)
                 hscroll = cix;
        }
#endif
    }
    if (previousScroll != hscroll)
        textLayoutDirty = true;
}
 
void QQuickTextInputPrivate::updateHorizontalScroll()
{
    if (autoScroll && m_echoMode != QQuickTextInput::NoEcho) {
#if QT_CONFIG(im)
        const int preeditLength = m_textLayout.preeditAreaText().size();
        ensureVisible(m_cursor, m_preeditCursor, preeditLength);
#else
        ensureVisible(m_cursor);
#endif
    } else {
        hscroll = 0;
    }
}
 
void QQuickTextInputPrivate::updateVerticalScroll()
{
    Q_Q(QQuickTextInput);
#if QT_CONFIG(im)
    const int preeditLength = m_textLayout.preeditAreaText().size();
#endif
    const qreal height = qMax<qreal>(0, q->height() - q->topPadding() - q->bottomPadding());
    qreal heightUsed = contentSize.height();
    qreal previousScroll = vscroll;
 
    if (!autoScroll || heightUsed <=  height) {
        // text fits in br; use vscroll for alignment
        vscroll = -QQuickTextUtil::alignedY(
                    heightUsed, height, vAlign & ~(Qt::AlignAbsolute|Qt::AlignHorizontal_Mask));
    } else {
#if QT_CONFIG(im)
        QTextLine currentLine = m_textLayout.lineForTextPosition(m_cursor + preeditLength);
#else
        QTextLine currentLine = m_textLayout.lineForTextPosition(m_cursor);
#endif
        QRectF r = currentLine.isValid() ? currentLine.rect() : QRectF();
        qreal top = r.top();
        int bottom = r.bottom();
 
        if (bottom - vscroll >= height) {
            // text doesn't fit, cursor is to the below the br (scroll down)
            vscroll = bottom - height;
        } else if (top - vscroll < 0 && vscroll < heightUsed) {
            // text doesn't fit, cursor is above br (scroll up)
            vscroll = top;
        } else if (heightUsed - vscroll < height) {
            // text doesn't fit, text document is to the left of br; align
            // right
            vscroll = heightUsed - height;
        }
#if QT_CONFIG(im)
        if (preeditLength > 0) {
            // check to ensure long pre-edit text doesn't push the cursor
            // off the top
            currentLine = m_textLayout.lineForTextPosition(m_cursor + qMax(0, m_preeditCursor - 1));
            top = currentLine.isValid() ? currentLine.rect().top() : 0;
            if (top < vscroll)
                vscroll = top;
        }
#endif
    }
    if (previousScroll != vscroll)
        textLayoutDirty = true;
}
 
void QQuickTextInput::triggerPreprocess()
{
    Q_D(QQuickTextInput);
    if (d->updateType == QQuickTextInputPrivate::UpdateNone)
        d->updateType = QQuickTextInputPrivate::UpdateOnlyPreprocess;
    polish();
    update();
}
 
void QQuickTextInput::updatePolish()
{
    invalidateFontCaches();
}
 
void QQuickTextInput::invalidateFontCaches()
{
    Q_D(QQuickTextInput);
 
    if (d->m_textLayout.engine() != nullptr)
        d->m_textLayout.engine()->resetFontEngineCache();
}
 
void QQuickTextInput::ensureActiveFocus(Qt::FocusReason reason)
{
    bool hadActiveFocus = hasActiveFocus();
    forceActiveFocus(reason);
#if QT_CONFIG(im)
    Q_D(QQuickTextInput);
    // re-open input panel on press if already focused
    if (hasActiveFocus() && hadActiveFocus && !d->m_readOnly)
        qGuiApp->inputMethod()->show();
#else
    Q_UNUSED(hadActiveFocus);
#endif
}
 
QSGNode *QQuickTextInput::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *data)
{
    Q_UNUSED(data);
    Q_D(QQuickTextInput);
 
    if (d->updateType != QQuickTextInputPrivate::UpdatePaintNode && oldNode != nullptr) {
        // Update done in preprocess() in the nodes
        d->updateType = QQuickTextInputPrivate::UpdateNone;
        return oldNode;
    }
 
    d->updateType = QQuickTextInputPrivate::UpdateNone;
 
    QSGInternalTextNode *node = static_cast<QSGInternalTextNode *>(oldNode);
    if (node == nullptr)
        node = d->sceneGraphContext()->createInternalTextNode(d->sceneGraphRenderContext());
    d->textNode = node;
 
    const bool showCursor = !isReadOnly() && d->cursorItem == nullptr && d->cursorVisible && d->m_blinkStatus;
 
    if (!d->textLayoutDirty && oldNode != nullptr) {
        if (showCursor)
            node->setCursor(cursorRectangle(), d->color);
        else
            node->clearCursor();
    } else {
        node->setRenderType(QSGTextNode::RenderType(d->renderType));
        node->clear();
        node->setMatrix(QMatrix4x4());
        node->setTextStyle(QSGInternalTextNode::Normal);
        node->setColor(d->color);
        node->setSelectionTextColor(d->selectedTextColor);
        node->setSelectionColor(d->selectionColor);
        node->setFiltering(smooth() ? QSGTexture::Linear : QSGTexture::Nearest);
 
        if (flags().testFlag(ItemObservesViewport))
            node->setViewport(clipRect());
        else
            node->setViewport(QRectF{});
 
        QPointF offset(leftPadding(), topPadding());
        if (d->autoScroll && d->m_textLayout.lineCount() > 0) {
            QFontMetricsF fm(d->font);
            // the y offset is there to keep the baseline constant in case we have script changes in the text.
            offset += -QPointF(d->hscroll, d->vscroll + d->m_textLayout.lineAt(0).ascent() - fm.ascent());
        } else {
            offset += -QPointF(d->hscroll, d->vscroll);
        }
 
        if (!d->m_textLayout.text().isEmpty()
#if QT_CONFIG(im)
                || !d->m_textLayout.preeditAreaText().isEmpty()
#endif
                ) {
            node->addTextLayout(offset, &d->m_textLayout,
                                d->selectionStart(),
                                d->selectionEnd() - 1); // selectionEnd() returns first char after
                                                        // selection
        }
 
        if (showCursor)
            node->setCursor(cursorRectangle(), d->color);
 
        d->textLayoutDirty = false;
    }
 
    invalidateFontCaches();
 
    return node;
}
 
#if QT_CONFIG(im)
QVariant QQuickTextInput::inputMethodQuery(Qt::InputMethodQuery property) const
{
#ifdef Q_OS_ANDROID
    // QTBUG-61652
    if (property == Qt::ImEnterKeyType) {
        Q_D(const QQuickItem);
        // Do not change if type was set manually
        if (!d->extra.isAllocated()
          || d->extra->enterKeyAttached == nullptr
          || d->extra->enterKeyAttached->type() == Qt::EnterKeyDefault) {
 
            QQuickItem *next = const_cast<QQuickTextInput*>(this)->nextItemInFocusChain();
            QQuickItem *originalNext = next;
            while (next && next != this && !next->activeFocusOnTab()) {
                next = next->nextItemInFocusChain();
                if (next == originalNext) {
                    // There seems to be no suitable element in the focus chain
                    next = nullptr;
                }
            }
            if (next) {
                const auto nextYPos = next->mapToGlobal(QPoint(0, 0)).y();
                const auto currentYPos = this->mapToGlobal(QPoint(0, 0)).y();
                if (currentYPos < nextYPos)
                    // Set EnterKey to KeyNext type only if the next item
                    // in the focus chain is below current QQuickTextInput
                    return Qt::EnterKeyNext;
            }
        }
    }
#endif
    return inputMethodQuery(property, QVariant());
}
 
QVariant QQuickTextInput::inputMethodQuery(Qt::InputMethodQuery property, const QVariant &argument) const
{
    Q_D(const QQuickTextInput);
    switch (property) {
    case Qt::ImEnabled:
        return QVariant((bool)(flags() & ItemAcceptsInputMethod));
    case Qt::ImHints:
        return QVariant((int) d->effectiveInputMethodHints());
    case Qt::ImCursorRectangle:
        return cursorRectangle();
    case Qt::ImAnchorRectangle:
        return d->anchorRectangle();
    case Qt::ImFont:
        return font();
    case Qt::ImCursorPosition: {
        const QPointF pt = argument.toPointF();
        if (!pt.isNull())
            return QVariant(d->positionAt(pt));
        return QVariant(d->m_cursor);
    }
    case Qt::ImSurroundingText:
        if (d->m_echoMode == PasswordEchoOnEdit && !d->m_passwordEchoEditing) {
            return QVariant(displayText());
        } else {
            return QVariant(d->realText());
        }
    case Qt::ImCurrentSelection:
        return QVariant(selectedText());
    case Qt::ImMaximumTextLength:
        return QVariant(maxLength());
    case Qt::ImAnchorPosition:
        if (d->selectionStart() == d->selectionEnd())
            return QVariant(d->m_cursor);
        else if (d->selectionStart() == d->m_cursor)
            return QVariant(d->selectionEnd());
        else
            return QVariant(d->selectionStart());
    case Qt::ImAbsolutePosition:
        return QVariant(d->m_cursor);
    case Qt::ImTextAfterCursor:
        if (argument.isValid())
            return QVariant(d->m_text.mid(d->m_cursor, argument.toInt()));
        return QVariant(d->m_text.mid(d->m_cursor));
    case Qt::ImTextBeforeCursor:
        if (argument.isValid())
            return QVariant(QStringView{d->m_text}.left(d->m_cursor).right(argument.toInt()).toString());
        return QVariant(d->m_text.left(d->m_cursor));
    case Qt::ImReadOnly:
        return QVariant(d->m_readOnly);
    default:
        return QQuickItem::inputMethodQuery(property);
    }
}
#endif // im
 
void QQuickTextInput::deselect()
{
    Q_D(QQuickTextInput);
    d->deselect();
}
 
void QQuickTextInput::selectAll()
{
    Q_D(QQuickTextInput);
    d->setSelection(0, text().size());
}
 
bool QQuickTextInput::isRightToLeft(int start, int end)
{
    if (start > end) {
        qmlWarning(this) << "isRightToLeft(start, end) called with the end property being smaller than the start.";
        return false;
    } else {
        return QStringView{text()}.mid(start, end - start).isRightToLeft();
    }
}
 
#if QT_CONFIG(clipboard)
void QQuickTextInput::cut()
{
    Q_D(QQuickTextInput);
    if (!d->m_readOnly && d->m_echoMode == QQuickTextInput::Normal) {
        d->copy();
        d->del();
    }
}
 
void QQuickTextInput::copy()
{
    Q_D(QQuickTextInput);
    d->copy();
}
 
void QQuickTextInput::paste()
{
    Q_D(QQuickTextInput);
    if (!d->m_readOnly)
        d->paste();
}
#endif // clipboard
 
void QQuickTextInput::undo()
{
    Q_D(QQuickTextInput);
    if (!d->m_readOnly) {
        d->cancelInput();
        d->internalUndo();
        d->finishChange(-1, true);
    }
}
 
void QQuickTextInput::redo()
{
    Q_D(QQuickTextInput);
    if (!d->m_readOnly) {
        d->cancelInput();
        d->internalRedo();
        d->finishChange();
    }
}
 
void QQuickTextInput::insert(int position, const QString &text)
{
    Q_D(QQuickTextInput);
    if (d->m_echoMode == QQuickTextInput::Password) {
        if (d->m_passwordMaskDelay > 0)
            d->m_passwordEchoTimer.start(d->m_passwordMaskDelay, this);
    }
    if (position < 0 || position > d->m_text.size())
        return;
 
    const int priorState = d->m_undoState;
 
    QString insertText = text;
 
    if (d->hasSelectedText()) {
        d->addCommand(QQuickTextInputPrivate::Command(
                QQuickTextInputPrivate::SetSelection, d->m_cursor, u'\0', d->m_selstart, d->m_selend));
    }
    if (d->m_maskData) {
        insertText = d->maskString(position, insertText);
        for (int i = 0; i < insertText.size(); ++i) {
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::DeleteSelection, position + i, d->m_text.at(position + i), -1, -1));
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::Insert, position + i, insertText.at(i), -1, -1));
        }
        d->m_text.replace(position, insertText.size(), insertText);
        if (!insertText.isEmpty())
            d->m_textDirty = true;
        if (position < d->m_selend && position + insertText.size() > d->m_selstart)
            d->m_selDirty = true;
    } else {
        int remaining = d->m_maxLength - d->m_text.size();
        if (remaining != 0) {
            insertText = insertText.left(remaining);
            d->m_text.insert(position, insertText);
            for (int i = 0; i < insertText.size(); ++i)
               d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::Insert, position + i, insertText.at(i), -1, -1));
            if (d->m_cursor >= position)
                d->m_cursor += insertText.size();
            if (d->m_selstart >= position)
                d->m_selstart += insertText.size();
            if (d->m_selend >= position)
                d->m_selend += insertText.size();
            d->m_textDirty = true;
            if (position >= d->m_selstart && position <= d->m_selend)
                d->m_selDirty = true;
        }
    }
 
    d->addCommand(QQuickTextInputPrivate::Command(
            QQuickTextInputPrivate::SetSelection, d->m_cursor, u'\0', d->m_selstart, d->m_selend));
    d->finishChange(priorState);
 
    if (d->lastSelectionStart != d->lastSelectionEnd) {
        if (d->m_selstart != d->lastSelectionStart) {
            d->lastSelectionStart = d->m_selstart;
            emit selectionStartChanged();
        }
        if (d->m_selend != d->lastSelectionEnd) {
            d->lastSelectionEnd = d->m_selend;
            emit selectionEndChanged();
        }
    }
}
 
void QQuickTextInput::remove(int start, int end)
{
    Q_D(QQuickTextInput);
 
    start = qBound(0, start, d->m_text.size());
    end = qBound(0, end, d->m_text.size());
 
    if (start > end)
        qSwap(start, end);
    else if (start == end)
        return;
 
    if (start < d->m_selend && end > d->m_selstart)
        d->m_selDirty = true;
 
    const int priorState = d->m_undoState;
 
    d->addCommand(QQuickTextInputPrivate::Command(
            QQuickTextInputPrivate::SetSelection, d->m_cursor, u'\0', d->m_selstart, d->m_selend));
 
    if (start <= d->m_cursor && d->m_cursor < end) {
        // cursor is within the selection. Split up the commands
        // to be able to restore the correct cursor position
        for (int i = d->m_cursor; i >= start; --i) {
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::DeleteSelection, i, d->m_text.at(i), -1, 1));
        }
        for (int i = end - 1; i > d->m_cursor; --i) {
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::DeleteSelection, i - d->m_cursor + start - 1, d->m_text.at(i), -1, -1));
        }
    } else {
        for (int i = end - 1; i >= start; --i) {
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::RemoveSelection, i, d->m_text.at(i), -1, -1));
        }
    }
    if (d->m_maskData) {
        d->m_text.replace(start, end - start,  d->clearString(start, end - start));
        for (int i = 0; i < end - start; ++i) {
            d->addCommand(QQuickTextInputPrivate::Command(
                    QQuickTextInputPrivate::Insert, start + i, d->m_text.at(start + i), -1, -1));
        }
    } else {
        d->m_text.remove(start, end - start);
 
        if (d->m_cursor > start)
            d->m_cursor -= qMin(d->m_cursor, end) - start;
        if (d->m_selstart > start)
            d->m_selstart -= qMin(d->m_selstart, end) - start;
        if (d->m_selend >= end)
            d->m_selend -= end - start;
    }
    d->addCommand(QQuickTextInputPrivate::Command(
            QQuickTextInputPrivate::SetSelection, d->m_cursor, u'\0', d->m_selstart, d->m_selend));
 
    d->m_textDirty = true;
    d->finishChange(priorState);
 
    if (d->lastSelectionStart != d->lastSelectionEnd) {
        if (d->m_selstart != d->lastSelectionStart) {
            d->lastSelectionStart = d->m_selstart;
            emit selectionStartChanged();
        }
        if (d->m_selend != d->lastSelectionEnd) {
            d->lastSelectionEnd = d->m_selend;
            emit selectionEndChanged();
        }
    }
}
 
 
void QQuickTextInput::selectWord()
{
    Q_D(QQuickTextInput);
    d->selectWordAtPos(d->m_cursor);
}
 
QString QQuickTextInput::passwordCharacter() const
{
    Q_D(const QQuickTextInput);
    return QString(d->m_passwordCharacter);
}
 
void QQuickTextInput::setPasswordCharacter(const QString &str)
{
    Q_D(QQuickTextInput);
    if (str.size() < 1)
        return;
    d->m_passwordCharacter = str.constData()[0];
    if (d->m_echoMode == Password || d->m_echoMode == PasswordEchoOnEdit)
        d->updateDisplayText();
    emit passwordCharacterChanged();
}
 
int QQuickTextInput::passwordMaskDelay() const
{
    Q_D(const QQuickTextInput);
    return d->m_passwordMaskDelay;
}
 
void QQuickTextInput::setPasswordMaskDelay(int delay)
{
    Q_D(QQuickTextInput);
    if (d->m_passwordMaskDelay != delay) {
        d->m_passwordMaskDelay = delay;
        emit passwordMaskDelayChanged(delay);
    }
}
 
void QQuickTextInput::resetPasswordMaskDelay()
{
    setPasswordMaskDelay(qGuiApp->styleHints()->passwordMaskDelay());
}
 
QString QQuickTextInput::displayText() const
{
    Q_D(const QQuickTextInput);
    return d->m_textLayout.text().insert(d->m_textLayout.preeditAreaPosition(), d->m_textLayout.preeditAreaText());
}
 
QString QQuickTextInput::preeditText() const
{
    Q_D(const QQuickTextInput);
    return d->m_textLayout.preeditAreaText();
}
 
bool QQuickTextInput::selectByMouse() const
{
    Q_D(const QQuickTextInput);
    return d->selectByMouse;
}
 
void QQuickTextInput::setSelectByMouse(bool on)
{
    Q_D(QQuickTextInput);
    if (d->selectByMouse != on) {
        d->selectByMouse = on;
        emit selectByMouseChanged(on);
    }
}
 
QQuickTextInput::SelectionMode QQuickTextInput::mouseSelectionMode() const
{
    Q_D(const QQuickTextInput);
    return d->mouseSelectionMode;
}
 
void QQuickTextInput::setMouseSelectionMode(SelectionMode mode)
{
    Q_D(QQuickTextInput);
    if (d->mouseSelectionMode != mode) {
        d->mouseSelectionMode = mode;
        emit mouseSelectionModeChanged(mode);
    }
}
 
bool QQuickTextInput::persistentSelection() const
{
    Q_D(const QQuickTextInput);
    return d->persistentSelection;
}
 
void QQuickTextInput::setPersistentSelection(bool on)
{
    Q_D(QQuickTextInput);
    if (d->persistentSelection == on)
        return;
    d->persistentSelection = on;
    emit persistentSelectionChanged();
}
 
bool QQuickTextInput::canPaste() const
{
#if QT_CONFIG(clipboard)
    Q_D(const QQuickTextInput);
    if (!d->canPasteValid) {
        if (const QMimeData *mimeData = QGuiApplication::clipboard()->mimeData())
            const_cast<QQuickTextInputPrivate *>(d)->canPaste = !d->m_readOnly && mimeData->hasText() && !mimeData->text().isEmpty();
        const_cast<QQuickTextInputPrivate *>(d)->canPasteValid = true;
    }
    return d->canPaste;
#else
    return false;
#endif
}
 
bool QQuickTextInput::canUndo() const
{
    Q_D(const QQuickTextInput);
    return d->canUndo;
}
 
bool QQuickTextInput::canRedo() const
{
    Q_D(const QQuickTextInput);
    return d->canRedo;
}
 
qreal QQuickTextInput::contentWidth() const
{
    Q_D(const QQuickTextInput);
    return d->contentSize.width();
}
 
qreal QQuickTextInput::contentHeight() const
{
    Q_D(const QQuickTextInput);
    return d->contentSize.height();
}
 
void QQuickTextInput::moveCursorSelection(int position)
{
    Q_D(QQuickTextInput);
    d->moveCursor(position, true);
}
 
void QQuickTextInput::moveCursorSelection(int pos, SelectionMode mode)
{
    Q_D(QQuickTextInput);
 
    if (mode == SelectCharacters) {
        d->moveCursor(pos, true);
    } else if (pos != d->m_cursor) {
        const int cursor = d->m_cursor;
        int anchor;
        if (!d->hasSelectedText())
            anchor = d->m_cursor;
        else if (d->selectionStart() == d->m_cursor)
            anchor = d->selectionEnd();
        else
            anchor = d->selectionStart();
 
        if (anchor < pos || (anchor == pos && cursor < pos)) {
            const QString text = this->text();
            QTextBoundaryFinder finder(QTextBoundaryFinder::Word, text);
            finder.setPosition(anchor);
 
            const QTextBoundaryFinder::BoundaryReasons reasons = finder.boundaryReasons();
            if (anchor < text.size() && (reasons == QTextBoundaryFinder::NotAtBoundary
                                           || (reasons & QTextBoundaryFinder::EndOfItem))) {
                finder.toPreviousBoundary();
            }
            anchor = finder.position() != -1 ? finder.position() : 0;
 
            finder.setPosition(pos);
            if (pos > 0 && !finder.boundaryReasons())
                finder.toNextBoundary();
            const int cursor = finder.position() != -1 ? finder.position() : text.size();
 
            d->setSelection(anchor, cursor - anchor);
        } else if (anchor > pos || (anchor == pos && cursor > pos)) {
            const QString text = this->text();
            QTextBoundaryFinder finder(QTextBoundaryFinder::Word, text);
            finder.setPosition(anchor);
 
            const QTextBoundaryFinder::BoundaryReasons reasons = finder.boundaryReasons();
            if (anchor > 0 && (reasons == QTextBoundaryFinder::NotAtBoundary
                               || (reasons & QTextBoundaryFinder::StartOfItem))) {
                finder.toNextBoundary();
            }
            anchor = finder.position() != -1 ? finder.position() : text.size();
 
            finder.setPosition(pos);
            if (pos < text.size() && !finder.boundaryReasons())
                 finder.toPreviousBoundary();
            const int cursor = finder.position() != -1 ? finder.position() : 0;
 
            d->setSelection(anchor, cursor - anchor);
        }
    }
}
 
void QQuickTextInput::focusInEvent(QFocusEvent *event)
{
    Q_D(QQuickTextInput);
    d->handleFocusEvent(event);
    QQuickImplicitSizeItem::focusInEvent(event);
}
 
void QQuickTextInputPrivate::handleFocusEvent(QFocusEvent *event)
{
    Q_Q(QQuickTextInput);
    bool focus = event->gotFocus();
    if (!m_readOnly) {
        q->setCursorVisible(focus);
        setBlinkingCursorEnabled(focus);
    }
    if (focus) {
        q->q_updateAlignment();
#if QT_CONFIG(im)
        if (focusOnPress && !m_readOnly)
            qGuiApp->inputMethod()->show();
        q->connect(QGuiApplication::inputMethod(), SIGNAL(inputDirectionChanged(Qt::LayoutDirection)),
                   q, SLOT(q_updateAlignment()));
#endif
    } else {
        if ((m_passwordEchoEditing || m_passwordEchoTimer.isActive())) {
            updatePasswordEchoEditing(false);//QQuickTextInputPrivate sets it on key events, but doesn't deal with focus events
        }
 
        if (event->reason() != Qt::ActiveWindowFocusReason
                && event->reason() != Qt::PopupFocusReason
                && hasSelectedText()
                && !persistentSelection)
            deselect();
 
        if (hasAcceptableInput(m_text) == AcceptableInput || fixup())
            emit q->editingFinished();
 
#if QT_CONFIG(im)
        q->disconnect(QGuiApplication::inputMethod(), SIGNAL(inputDirectionChanged(Qt::LayoutDirection)),
                      q, SLOT(q_updateAlignment()));
#endif
    }
}
 
void QQuickTextInput::focusOutEvent(QFocusEvent *event)
{
    Q_D(QQuickTextInput);
    d->handleFocusEvent(event);
    QQuickImplicitSizeItem::focusOutEvent(event);
}
 
bool QQuickTextInput::isInputMethodComposing() const
{
#if !QT_CONFIG(im)
    return false;
#else
    Q_D(const QQuickTextInput);
    return d->hasImState;
#endif
}
 
QQuickTextInputPrivate::ExtraData::ExtraData()
    : padding(0)
    , topPadding(0)
    , leftPadding(0)
    , rightPadding(0)
    , bottomPadding(0)
    , explicitTopPadding(false)
    , explicitLeftPadding(false)
    , explicitRightPadding(false)
    , explicitBottomPadding(false)
    , implicitResize(true)
{
}
 
void QQuickTextInputPrivate::init()
{
    Q_Q(QQuickTextInput);
#if QT_CONFIG(clipboard)
    if (QGuiApplication::clipboard()->supportsSelection())
        q->setAcceptedMouseButtons(Qt::LeftButton | Qt::MiddleButton);
    else
#endif
        q->setAcceptedMouseButtons(Qt::LeftButton);
 
#if QT_CONFIG(im)
    q->setFlag(QQuickItem::ItemAcceptsInputMethod);
#endif
    q->setFlag(QQuickItem::ItemHasContents);
#if QT_CONFIG(clipboard)
    qmlobject_connect(QGuiApplication::clipboard(), QClipboard, SIGNAL(dataChanged()),
            q, QQuickTextInput, SLOT(q_canPasteChanged()));
#endif // clipboard
 
    lastSelectionStart = 0;
    lastSelectionEnd = 0;
    determineHorizontalAlignment();
 
    if (!qmlDisableDistanceField()) {
        QTextOption option = m_textLayout.textOption();
        option.setUseDesignMetrics(renderType != QQuickTextInput::NativeRendering);
        m_textLayout.setTextOption(option);
    }
 
    m_inputControl = new QInputControl(QInputControl::LineEdit, q);
    setSizePolicy(QLayoutPolicy::Preferred, QLayoutPolicy::Fixed);
}
 
void QQuickTextInputPrivate::cancelInput()
{
#if QT_CONFIG(im)
    Q_Q(QQuickTextInput);
    if (!m_readOnly && q->hasActiveFocus() && qGuiApp)
        cancelPreedit();
#endif // im
}
 
void QQuickTextInput::updateCursorRectangle(bool scroll)
{
    Q_D(QQuickTextInput);
    if (!isComponentComplete())
        return;
 
    if (scroll) {
        d->updateHorizontalScroll();
        d->updateVerticalScroll();
    }
    d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
    polish();
    update();
    emit cursorRectangleChanged();
    if (d->cursorItem) {
        QRectF r = cursorRectangle();
        d->cursorItem->setPosition(r.topLeft());
        d->cursorItem->setHeight(r.height());
    }
#if QT_CONFIG(im)
    updateInputMethod(Qt::ImCursorRectangle | Qt::ImAnchorRectangle);
#endif
}
 
void QQuickTextInput::selectionChanged()
{
    Q_D(QQuickTextInput);
    d->textLayoutDirty = true; //TODO: Only update rect in selection
    d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
    polish();
    update();
    emit selectedTextChanged();
 
    if (d->lastSelectionStart != d->selectionStart()) {
        d->lastSelectionStart = d->selectionStart();
        if (d->lastSelectionStart == -1)
            d->lastSelectionStart = d->m_cursor;
        emit selectionStartChanged();
    }
    if (d->lastSelectionEnd != d->selectionEnd()) {
        d->lastSelectionEnd = d->selectionEnd();
        if (d->lastSelectionEnd == -1)
            d->lastSelectionEnd = d->m_cursor;
        emit selectionEndChanged();
    }
}
 
QRectF QQuickTextInput::boundingRect() const
{
    Q_D(const QQuickTextInput);
 
    int cursorWidth = d->cursorItem ? 0 : 1;
 
    qreal hscroll = d->hscroll;
    if (!d->autoScroll || d->contentSize.width() < width())
        hscroll -= QQuickTextUtil::alignedX(d->contentSize.width(), width(), effectiveHAlign());
 
    // Could include font max left/right bearings to either side of rectangle.
    QRectF r(-hscroll, -d->vscroll, d->contentSize.width(), d->contentSize.height());
    r.setRight(r.right() + cursorWidth);
    return r;
}
 
QRectF QQuickTextInput::clipRect() const
{
    Q_D(const QQuickTextInput);
 
    int cursorWidth = d->cursorItem ? d->cursorItem->width() : 1;
 
    // Could include font max left/right bearings to either side of rectangle.
    QRectF r = QQuickImplicitSizeItem::clipRect();
    r.setRight(r.right() + cursorWidth);
    return r;
}
 
void QQuickTextInput::q_canPasteChanged()
{
    Q_D(QQuickTextInput);
    bool old = d->canPaste;
#if QT_CONFIG(clipboard)
    if (const QMimeData *mimeData = QGuiApplication::clipboard()->mimeData())
        d->canPaste = !d->m_readOnly && mimeData->hasText();
    else
        d->canPaste = false;
#endif
 
    bool changed = d->canPaste != old || !d->canPasteValid;
    d->canPasteValid = true;
    if (changed)
        emit canPasteChanged();
 
}
 
void QQuickTextInput::q_updateAlignment()
{
    Q_D(QQuickTextInput);
    if (d->determineHorizontalAlignment()) {
        d->updateLayout();
        updateCursorRectangle();
    }
}
 
void QQuickTextInputPrivate::updateDisplayText(bool forceUpdate)
{
    QString orig = m_textLayout.text();
    QString str;
    if (m_echoMode == QQuickTextInput::NoEcho)
        str = QString::fromLatin1("");
    else
        str = m_text;
 
    if (m_echoMode == QQuickTextInput::Password) {
         str.fill(m_passwordCharacter);
        if (m_passwordEchoTimer.isActive() && m_cursor > 0 && m_cursor <= m_text.size()) {
            int cursor = m_cursor - 1;
            QChar uc = m_text.at(cursor);
            str[cursor] = uc;
            if (cursor > 0 && uc.unicode() >= 0xdc00 && uc.unicode() < 0xe000) {
                // second half of a surrogate, check if we have the first half as well,
                // if yes restore both at once
                uc = m_text.at(cursor - 1);
                if (uc.unicode() >= 0xd800 && uc.unicode() < 0xdc00)
                    str[cursor - 1] = uc;
            }
        }
    } else if (m_echoMode == QQuickTextInput::PasswordEchoOnEdit && !m_passwordEchoEditing) {
        str.fill(m_passwordCharacter);
    }
 
    // replace certain non-printable characters with spaces (to avoid
    // drawing boxes when using fonts that don't have glyphs for such
    // characters)
    QChar* uc = str.data();
    for (int i = 0; i < str.size(); ++i) {
        if (uc[i] == QChar::LineSeparator
            || uc[i] == QChar::ParagraphSeparator
            || uc[i] == QChar::ObjectReplacementCharacter)
            uc[i] = QChar(0x0020);
    }
 
    if (str != orig || forceUpdate) {
        m_textLayout.setText(str);
        updateLayout(); // polish?
        emit q_func()->displayTextChanged();
    }
}
 
qreal QQuickTextInputPrivate::calculateImplicitWidthForText(const QString &text) const
{
    Q_Q(const QQuickTextInput);
    QTextLayout layout(text);
 
    QTextOption option = m_textLayout.textOption();
    option.setTextDirection(m_layoutDirection);
    option.setFlags(QTextOption::IncludeTrailingSpaces);
    option.setWrapMode(QTextOption::WrapMode(wrapMode));
    option.setAlignment(Qt::Alignment(q->effectiveHAlign()));
    layout.setTextOption(option);
    layout.setFont(font);
#if QT_CONFIG(im)
    layout.setPreeditArea(m_textLayout.preeditAreaPosition(), m_textLayout.preeditAreaText());
#endif
    layout.beginLayout();
 
    QTextLine line = layout.createLine();
    line.setLineWidth(INT_MAX);
    const qreal theImplicitWidth = qCeil(line.naturalTextWidth()) + q->leftPadding() + q->rightPadding();
 
    layout.endLayout();
    return theImplicitWidth;
}
 
qreal QQuickTextInputPrivate::getImplicitWidth() const
{
    Q_Q(const QQuickTextInput);
    if (!requireImplicitWidth) {
        QQuickTextInputPrivate *d = const_cast<QQuickTextInputPrivate *>(this);
        d->requireImplicitWidth = true;
 
        if (q->isComponentComplete())
            d->implicitWidth = calculateImplicitWidthForText(m_text);
    }
    return implicitWidth;
}
 
void QQuickTextInputPrivate::setTopPadding(qreal value, bool reset)
{
    Q_Q(QQuickTextInput);
    qreal oldPadding = q->topPadding();
    if (!reset || extra.isAllocated()) {
        extra.value().topPadding = value;
        extra.value().explicitTopPadding = !reset;
    }
    if ((!reset && !qFuzzyCompare(oldPadding, value)) || (reset && !qFuzzyCompare(oldPadding, padding()))) {
        updateLayout();
        q->updateCursorRectangle();
        emit q->topPaddingChanged();
    }
}
 
void QQuickTextInputPrivate::setLeftPadding(qreal value, bool reset)
{
    Q_Q(QQuickTextInput);
    qreal oldPadding = q->leftPadding();
    if (!reset || extra.isAllocated()) {
        extra.value().leftPadding = value;
        extra.value().explicitLeftPadding = !reset;
    }
    if ((!reset && !qFuzzyCompare(oldPadding, value)) || (reset && !qFuzzyCompare(oldPadding, padding()))) {
        updateLayout();
        q->updateCursorRectangle();
        emit q->leftPaddingChanged();
    }
}
 
void QQuickTextInputPrivate::setRightPadding(qreal value, bool reset)
{
    Q_Q(QQuickTextInput);
    qreal oldPadding = q->rightPadding();
    if (!reset || extra.isAllocated()) {
        extra.value().rightPadding = value;
        extra.value().explicitRightPadding = !reset;
    }
    if ((!reset && !qFuzzyCompare(oldPadding, value)) || (reset && !qFuzzyCompare(oldPadding, padding()))) {
        updateLayout();
        q->updateCursorRectangle();
        emit q->rightPaddingChanged();
    }
}
 
void QQuickTextInputPrivate::setBottomPadding(qreal value, bool reset)
{
    Q_Q(QQuickTextInput);
    qreal oldPadding = q->bottomPadding();
    if (!reset || extra.isAllocated()) {
        extra.value().bottomPadding = value;
        extra.value().explicitBottomPadding = !reset;
    }
    if ((!reset && !qFuzzyCompare(oldPadding, value)) || (reset && !qFuzzyCompare(oldPadding, padding()))) {
        updateLayout();
        q->updateCursorRectangle();
        emit q->bottomPaddingChanged();
    }
}
 
bool QQuickTextInputPrivate::isImplicitResizeEnabled() const
{
    return !extra.isAllocated() || extra->implicitResize;
}
 
void QQuickTextInputPrivate::setImplicitResizeEnabled(bool enabled)
{
    if (!enabled)
        extra.value().implicitResize = false;
    else if (extra.isAllocated())
        extra->implicitResize = true;
}
 
void QQuickTextInputPrivate::updateLayout()
{
    Q_Q(QQuickTextInput);
 
    if (!q->isComponentComplete())
        return;
 
 
    QTextOption option = m_textLayout.textOption();
    option.setTextDirection(layoutDirection());
    option.setWrapMode(QTextOption::WrapMode(wrapMode));
    option.setAlignment(Qt::Alignment(q->effectiveHAlign()));
    if (!qmlDisableDistanceField())
        option.setUseDesignMetrics(renderType != QQuickTextInput::NativeRendering);
 
    m_textLayout.setTextOption(option);
    m_textLayout.setFont(font);
 
    m_textLayout.beginLayout();
 
    QTextLine line = m_textLayout.createLine();
    if (requireImplicitWidth) {
        line.setLineWidth(INT_MAX);
        const bool wasInLayout = inLayout;
        inLayout = true;
        if (isImplicitResizeEnabled())
            q->setImplicitWidth(qCeil(line.naturalTextWidth()) + q->leftPadding() + q->rightPadding());
        inLayout = wasInLayout;
        if (inLayout)       // probably the result of a binding loop, but by letting it
            return;         // get this far we'll get a warning to that effect.
    }
    qreal lineWidth = q->widthValid() || !isImplicitResizeEnabled() ? q->width() - q->leftPadding() - q->rightPadding() : INT_MAX;
    qreal height = 0;
    qreal width = 0;
    do {
        line.setLineWidth(lineWidth);
        line.setPosition(QPointF(0, height));
 
        height += line.height();
        width = qMax(width, line.naturalTextWidth());
 
        line = m_textLayout.createLine();
    } while (line.isValid());
    m_textLayout.endLayout();
 
    option.setWrapMode(QTextOption::NoWrap);
    m_textLayout.setTextOption(option);
 
    textLayoutDirty = true;
 
    const QSizeF previousSize = contentSize;
    contentSize = QSizeF(width, height);
 
    updateType = UpdatePaintNode;
    q->polish();
    q->update();
 
    if (isImplicitResizeEnabled()) {
        if (!requireImplicitWidth && !q->widthValid())
            q->setImplicitSize(width + q->leftPadding() + q->rightPadding(), height + q->topPadding() + q->bottomPadding());
        else
            q->setImplicitHeight(height + q->topPadding() + q->bottomPadding());
    }
 
    updateBaselineOffset();
 
    if (previousSize != contentSize)
        emit q->contentSizeChanged();
}
 
void QQuickTextInputPrivate::updateBaselineOffset()
{
    Q_Q(QQuickTextInput);
    if (!q->isComponentComplete())
        return;
    QFontMetricsF fm(font);
    qreal yoff = 0;
    if (q->heightValid()) {
        const qreal surplusHeight = q->height() - contentSize.height() - q->topPadding() - q->bottomPadding();
        if (vAlign == QQuickTextInput::AlignBottom)
            yoff = surplusHeight;
        else if (vAlign == QQuickTextInput::AlignVCenter)
            yoff = surplusHeight/2;
    }
    q->setBaselineOffset(fm.ascent() + yoff + q->topPadding());
}
 
#if QT_CONFIG(clipboard)
void QQuickTextInputPrivate::copy(QClipboard::Mode mode) const
{
    QString t = selectedText();
    if (!t.isEmpty() && m_echoMode == QQuickTextInput::Normal) {
        QGuiApplication::clipboard()->setText(t, mode);
    }
}
 
void QQuickTextInputPrivate::paste(QClipboard::Mode clipboardMode)
{
    QString clip = QGuiApplication::clipboard()->text(clipboardMode);
    if (!clip.isEmpty() || hasSelectedText()) {
        separate(); //make it a separate undo/redo command
        insert(clip);
        separate();
    }
}
 
#endif // clipboard
 
#if QT_CONFIG(im)
void QQuickTextInputPrivate::commitPreedit()
{
    Q_Q(QQuickTextInput);
 
    if (!hasImState)
        return;
 
    QGuiApplication::inputMethod()->commit();
 
    if (!hasImState)
        return;
 
    QInputMethodEvent ev;
    QCoreApplication::sendEvent(q, &ev);
}
 
void QQuickTextInputPrivate::cancelPreedit()
{
    Q_Q(QQuickTextInput);
 
    if (!hasImState)
        return;
 
    QGuiApplication::inputMethod()->reset();
 
    QInputMethodEvent ev;
    QCoreApplication::sendEvent(q, &ev);
}
#endif // im
 
void QQuickTextInputPrivate::backspace()
{
    int priorState = m_undoState;
    if (separateSelection()) {
        removeSelectedText();
    } else if (m_cursor) {
            --m_cursor;
            if (m_maskData)
                m_cursor = prevMaskBlank(m_cursor);
            QChar uc = m_text.at(m_cursor);
            if (m_cursor > 0 && uc.unicode() >= 0xdc00 && uc.unicode() < 0xe000) {
                // second half of a surrogate, check if we have the first half as well,
                // if yes delete both at once
                uc = m_text.at(m_cursor - 1);
                if (uc.unicode() >= 0xd800 && uc.unicode() < 0xdc00) {
                    internalDelete(true);
                    --m_cursor;
                }
            }
            internalDelete(true);
    }
    finishChange(priorState);
}
 
void QQuickTextInputPrivate::del()
{
    int priorState = m_undoState;
    if (separateSelection()) {
        removeSelectedText();
    } else {
        int n = m_textLayout.nextCursorPosition(m_cursor) - m_cursor;
        while (n--)
            internalDelete();
    }
    finishChange(priorState);
}
 
void QQuickTextInputPrivate::insert(const QString &newText)
{
    int priorState = m_undoState;
    if (separateSelection())
        removeSelectedText();
    internalInsert(newText);
    finishChange(priorState);
}
 
void QQuickTextInputPrivate::clear()
{
    int priorState = m_undoState;
    separateSelection();
    m_selstart = 0;
    m_selend = m_text.size();
    removeSelectedText();
    separate();
    finishChange(priorState, /*update*/false, /*edited*/false);
}
 
void QQuickTextInputPrivate::setSelection(int start, int length)
{
    Q_Q(QQuickTextInput);
#if QT_CONFIG(im)
    commitPreedit();
#endif
 
    if (start < 0 || start > m_text.size()) {
        qWarning("QQuickTextInputPrivate::setSelection: Invalid start position");
        return;
    }
 
    if (length > 0) {
        if (start == m_selstart && start + length == m_selend && m_cursor == m_selend)
            return;
        m_selstart = start;
        m_selend = qMin(start + length, m_text.size());
        m_cursor = m_selend;
    } else if (length < 0) {
        if (start == m_selend && start + length == m_selstart && m_cursor == m_selstart)
            return;
        m_selstart = qMax(start + length, 0);
        m_selend = start;
        m_cursor = m_selstart;
    } else if (m_selstart != m_selend) {
        m_selstart = 0;
        m_selend = 0;
        m_cursor = start;
    } else {
        m_cursor = start;
        emitCursorPositionChanged();
        return;
    }
    emit q->selectionChanged();
    emitCursorPositionChanged();
#if QT_CONFIG(im)
    q->updateInputMethod(Qt::ImCursorRectangle | Qt::ImAnchorRectangle | Qt::ImCursorPosition | Qt::ImAnchorPosition
                       | Qt::ImCurrentSelection);
#endif
}
 
void QQuickTextInputPrivate::updatePasswordEchoEditing(bool editing)
{
    cancelPasswordEchoTimer();
    m_passwordEchoEditing = editing;
    updateDisplayText();
}
 
bool QQuickTextInputPrivate::fixup() // this function assumes that validate currently returns != Acceptable
{
#if QT_CONFIG(validator)
    if (m_validator) {
        QString textCopy = m_text;
        int cursorCopy = m_cursor;
        m_validator->fixup(textCopy);
        if (m_validator->validate(textCopy, cursorCopy) == QValidator::Acceptable) {
            if (textCopy != m_text || cursorCopy != m_cursor)
                internalSetText(textCopy, cursorCopy);
            return true;
        }
    }
#endif
    return false;
}
 
void QQuickTextInputPrivate::moveCursor(int pos, bool mark)
{
    Q_Q(QQuickTextInput);
#if QT_CONFIG(im)
    commitPreedit();
#endif
 
    if (pos != m_cursor) {
        separate();
        if (m_maskData)
            pos = pos > m_cursor ? nextMaskBlank(pos) : prevMaskBlank(pos);
    }
    if (mark) {
        int anchor;
        if (m_selend > m_selstart && m_cursor == m_selstart)
            anchor = m_selend;
        else if (m_selend > m_selstart && m_cursor == m_selend)
            anchor = m_selstart;
        else
            anchor = m_cursor;
        m_selstart = qMin(anchor, pos);
        m_selend = qMax(anchor, pos);
    } else {
        internalDeselect();
    }
    m_cursor = pos;
    if (mark || m_selDirty) {
        m_selDirty = false;
        emit q->selectionChanged();
    }
    emitCursorPositionChanged();
#if QT_CONFIG(im)
    q->updateInputMethod();
#endif
}
 
#if QT_CONFIG(im)
void QQuickTextInputPrivate::processInputMethodEvent(QInputMethodEvent *event)
{
    Q_Q(QQuickTextInput);
 
    int priorState = -1;
    bool isGettingInput = !event->commitString().isEmpty()
            || event->preeditString() != preeditAreaText()
            || event->replacementLength() > 0;
    bool cursorPositionChanged = false;
    bool selectionChange = false;
    m_preeditDirty = event->preeditString() != preeditAreaText();
 
    if (isGettingInput) {
        // If any text is being input, remove selected text.
        priorState = m_undoState;
        separateSelection();
        if (m_echoMode == QQuickTextInput::PasswordEchoOnEdit && !m_passwordEchoEditing) {
            updatePasswordEchoEditing(true);
            m_selstart = 0;
            m_selend = m_text.size();
        }
        removeSelectedText();
    }
 
    int c = m_cursor; // cursor position after insertion of commit string
    if (event->replacementStart() <= 0)
        c += event->commitString().size() - qMin(-event->replacementStart(), event->replacementLength());
 
    int cursorInsertPos = m_cursor + event->replacementStart();
    if (cursorInsertPos < 0)
        cursorInsertPos = 0;
 
    // insert commit string
    if (event->replacementLength()) {
        m_selstart = cursorInsertPos;
        m_selend = m_selstart + event->replacementLength();
        m_selend = qMin(m_selend, m_text.size());
        removeSelectedText();
    }
    m_cursor = cursorInsertPos;
 
    if (!event->commitString().isEmpty()) {
        internalInsert(event->commitString());
        cursorPositionChanged = true;
    } else {
        m_cursor = qBound(0, c, m_text.size());
    }
 
    for (int i = 0; i < event->attributes().size(); ++i) {
        const QInputMethodEvent::Attribute &a = event->attributes().at(i);
        if (a.type == QInputMethodEvent::Selection) {
            // If we already called internalInsert(), the cursor position will
            // already be adjusted correctly. The attribute.start does
            // not seem to take the mask into account, so it will reset cursor
            // to an invalid position in such case.
            if (!cursorPositionChanged)
                m_cursor = qBound(0, a.start + a.length, m_text.size());
            if (a.length) {
                m_selstart = qMax(0, qMin(a.start, m_text.size()));
                m_selend = m_cursor;
                if (m_selend < m_selstart) {
                    qSwap(m_selstart, m_selend);
                }
                selectionChange = true;
            } else {
                selectionChange = m_selstart != m_selend;
                m_selstart = m_selend = 0;
            }
            cursorPositionChanged = true;
        }
    }
    QString oldPreeditString = m_textLayout.preeditAreaText();
    m_textLayout.setPreeditArea(m_cursor, event->preeditString());
    if (oldPreeditString != m_textLayout.preeditAreaText()) {
        emit q->preeditTextChanged();
        if (!event->preeditString().isEmpty() && m_undoPreeditState == -1)
            // Pre-edit text started. Remember state for undo purpose.
            m_undoPreeditState = priorState;
    }
    const int oldPreeditCursor = m_preeditCursor;
    m_preeditCursor = event->preeditString().size();
    hasImState = !event->preeditString().isEmpty();
    bool cursorVisible = true;
    QVector<QTextLayout::FormatRange> formats;
    for (int i = 0; i < event->attributes().size(); ++i) {
        const QInputMethodEvent::Attribute &a = event->attributes().at(i);
        if (a.type == QInputMethodEvent::Cursor) {
            hasImState = true;
            m_preeditCursor = a.start;
            cursorVisible = a.length != 0;
        } else if (a.type == QInputMethodEvent::TextFormat) {
            hasImState = true;
            QTextCharFormat f = qvariant_cast<QTextFormat>(a.value).toCharFormat();
            if (f.isValid()) {
                QTextLayout::FormatRange o;
                o.start = a.start + m_cursor;
                o.length = a.length;
                o.format = f;
                formats.append(o);
            }
        }
    }
    m_textLayout.setFormats(formats);
 
    updateDisplayText(/*force*/ true);
    if (cursorPositionChanged && emitCursorPositionChanged())
        q->updateInputMethod(Qt::ImCursorPosition | Qt::ImAnchorPosition);
    else if (m_preeditCursor != oldPreeditCursor || isGettingInput)
        q->updateCursorRectangle();
 
    if (isGettingInput)
        finishChange(priorState);
 
    q->setCursorVisible(cursorVisible);
 
    if (selectionChange) {
        emit q->selectionChanged();
        q->updateInputMethod(Qt::ImCursorRectangle | Qt::ImAnchorRectangle
                            | Qt::ImCurrentSelection);
    }
 
    // Empty pre-edit text handled. Clean m_undoPreeditState
    if (event->preeditString().isEmpty())
        m_undoPreeditState = -1;
 
}
#endif // im
 
void QQuickTextInputPrivate::selectWordAtPos(int cursor)
{
    int next = cursor + 1;
    if (next > end())
        --next;
    int c = m_textLayout.previousCursorPosition(next, QTextLayout::SkipWords);
    moveCursor(c, false);
    // ## text layout should support end of words.
    int end = m_textLayout.nextCursorPosition(c, QTextLayout::SkipWords);
    while (end > cursor && m_text.at(end - 1).isSpace())
        --end;
    moveCursor(end, true);
}
 
bool QQuickTextInputPrivate::finishChange(int validateFromState, bool update, bool edited)
{
    Q_Q(QQuickTextInput);
 
    Q_UNUSED(update);
#if QT_CONFIG(im)
    bool inputMethodAttributesChanged = m_textDirty || m_selDirty;
#endif
    bool alignmentChanged = false;
    bool textChanged = false;
 
    if (m_textDirty) {
        // do validation
        bool wasValidInput = m_validInput;
        bool wasAcceptable = m_acceptableInput;
        m_validInput = true;
        m_acceptableInput = true;
#if QT_CONFIG(validator)
        if (m_validator) {
            QString textCopy = m_text;
            if (m_maskData)
                textCopy = maskString(0, m_text, true);
            int cursorCopy = m_cursor;
            QValidator::State state = m_validator->validate(textCopy, cursorCopy);
            if (m_maskData)
                textCopy = m_text;
            m_validInput = state != QValidator::Invalid;
            m_acceptableInput = state == QValidator::Acceptable;
            if (m_validInput && !m_maskData) {
                if (m_text != textCopy) {
                    internalSetText(textCopy, cursorCopy);
                    return true;
                }
                m_cursor = cursorCopy;
            }
        }
#endif
        if (m_maskData)
            checkIsValid();
 
#if QT_CONFIG(im)
        // If we were during pre-edit, validateFromState should point to the state before pre-edit
        // has been started. Choose the correct oldest remembered state
        if (m_undoPreeditState >= 0 && (m_undoPreeditState < validateFromState || validateFromState < 0))
                validateFromState = m_undoPreeditState;
#endif
        if (validateFromState >= 0 && wasValidInput && !m_validInput) {
            if (m_transactions.size())
                return false;
            internalUndo(validateFromState);
            m_history.resize(m_undoState);
            m_validInput = true;
            m_acceptableInput = wasAcceptable;
            m_textDirty = false;
        }
 
        if (m_textDirty) {
            textChanged = true;
            m_textDirty = false;
#if QT_CONFIG(im)
            m_preeditDirty = false;
#endif
            alignmentChanged = determineHorizontalAlignment();
            if (edited)
                emit q->textEdited();
            emit q->textChanged();
        }
 
        updateDisplayText(alignmentChanged);
 
        if (m_acceptableInput != wasAcceptable)
            emit q->acceptableInputChanged();
    }
#if QT_CONFIG(im)
    if (m_preeditDirty) {
        m_preeditDirty = false;
        if (determineHorizontalAlignment()) {
            alignmentChanged = true;
            updateLayout();
        }
    }
#endif
 
    if (m_selDirty) {
        m_selDirty = false;
        emit q->selectionChanged();
    }
 
#if QT_CONFIG(im)
    inputMethodAttributesChanged |= (m_cursor != m_lastCursorPos);
    if (inputMethodAttributesChanged)
        q->updateInputMethod();
#endif
    emitUndoRedoChanged();
 
    if (!emitCursorPositionChanged() && (alignmentChanged || textChanged))
        q->updateCursorRectangle();
 
    return true;
}
 
void QQuickTextInputPrivate::internalSetText(const QString &txt, int pos, bool edited)
{
    internalDeselect();
    QString oldText = m_text;
    if (m_maskData) {
        m_text = maskString(0, txt, true);
        m_text += clearString(m_text.size(), m_maxLength - m_text.size());
    } else {
        m_text = txt.isEmpty() ? txt : txt.left(m_maxLength);
    }
    m_history.clear();
    m_undoState = 0;
#if QT_CONFIG(im)
    m_undoPreeditState = -1;
#endif
    m_cursor = (pos < 0 || pos > m_text.size()) ? m_text.size() : pos;
    m_textDirty = (oldText != m_text);
 
    bool changed = finishChange(-1, true, edited);
#if !QT_CONFIG(accessibility)
    Q_UNUSED(changed);
#else
    Q_Q(QQuickTextInput);
    if (changed && QAccessible::isActive()) {
        if (QObject *acc = QQuickAccessibleAttached::findAccessible(q, QAccessible::EditableText)) {
            QAccessibleTextUpdateEvent ev(acc, 0, oldText, m_text);
            QAccessible::updateAccessibility(&ev);
        }
    }
#endif
}
 
 
void QQuickTextInputPrivate::addCommand(const Command &cmd)
{
    if (m_separator && m_undoState && m_history[m_undoState - 1].type != Separator) {
        m_history.resize(m_undoState + 2);
        m_history[m_undoState++] = Command(Separator, m_cursor, u'\0', m_selstart, m_selend);
    } else {
        m_history.resize(m_undoState + 1);
    }
    m_separator = false;
    m_history[m_undoState++] = cmd;
}
 
void QQuickTextInputPrivate::internalInsert(const QString &s)
{
    Q_Q(QQuickTextInput);
    if (m_echoMode == QQuickTextInput::Password) {
        if (m_passwordMaskDelay > 0)
            m_passwordEchoTimer.start(m_passwordMaskDelay, q);
    }
    Q_ASSERT(!hasSelectedText());   // insert(), processInputMethodEvent() call removeSelectedText() first.
    if (m_maskData) {
        QString ms = maskString(m_cursor, s);
        for (int i = 0; i < ms.size(); ++i) {
            addCommand (Command(DeleteSelection, m_cursor + i, m_text.at(m_cursor + i), -1, -1));
            addCommand(Command(Insert, m_cursor + i, ms.at(i), -1, -1));
        }
        m_text.replace(m_cursor, ms.size(), ms);
        m_cursor += ms.size();
        m_cursor = nextMaskBlank(m_cursor);
        m_textDirty = true;
    } else {
        int remaining = m_maxLength - m_text.size();
        if (remaining != 0) {
            const QStringView remainingStr = QStringView{s}.left(remaining);
            m_text.insert(m_cursor, remainingStr);
            for (auto e : remainingStr)
               addCommand(Command(Insert, m_cursor++, e, -1, -1));
            m_textDirty = true;
        }
    }
}
 
void QQuickTextInputPrivate::internalDelete(bool wasBackspace)
{
    if (m_cursor < m_text.size()) {
        cancelPasswordEchoTimer();
        Q_ASSERT(!hasSelectedText());   // del(), backspace() call removeSelectedText() first.
        addCommand(Command((CommandType)((m_maskData ? 2 : 0) + (wasBackspace ? Remove : Delete)),
                   m_cursor, m_text.at(m_cursor), -1, -1));
        if (m_maskData) {
            m_text.replace(m_cursor, 1, clearString(m_cursor, 1));
            addCommand(Command(Insert, m_cursor, m_text.at(m_cursor), -1, -1));
        } else {
            m_text.remove(m_cursor, 1);
        }
        m_textDirty = true;
    }
}
 
void QQuickTextInputPrivate::removeSelectedText()
{
    if (m_selstart < m_selend && m_selend <= m_text.size()) {
        cancelPasswordEchoTimer();
        int i ;
        if (m_selstart <= m_cursor && m_cursor < m_selend) {
            // cursor is within the selection. Split up the commands
            // to be able to restore the correct cursor position
            for (i = m_cursor; i >= m_selstart; --i)
                addCommand (Command(DeleteSelection, i, m_text.at(i), -1, 1));
            for (i = m_selend - 1; i > m_cursor; --i)
                addCommand (Command(DeleteSelection, i - m_cursor + m_selstart - 1, m_text.at(i), -1, -1));
        } else {
            for (i = m_selend-1; i >= m_selstart; --i)
                addCommand (Command(RemoveSelection, i, m_text.at(i), -1, -1));
        }
        if (m_maskData) {
            m_text.replace(m_selstart, m_selend - m_selstart,  clearString(m_selstart, m_selend - m_selstart));
            for (int i = 0; i < m_selend - m_selstart; ++i)
                addCommand(Command(Insert, m_selstart + i, m_text.at(m_selstart + i), -1, -1));
        } else {
            m_text.remove(m_selstart, m_selend - m_selstart);
        }
        if (m_cursor > m_selstart)
            m_cursor -= qMin(m_cursor, m_selend) - m_selstart;
        internalDeselect();
        m_textDirty = true;
    }
}
 
bool QQuickTextInputPrivate::separateSelection()
{
    if (hasSelectedText()) {
        separate();
        addCommand(Command(SetSelection, m_cursor, u'\0', m_selstart, m_selend));
        return true;
    } else {
        return false;
    }
}
 
void QQuickTextInputPrivate::parseInputMask(const QString &maskFields)
{
    int delimiter = maskFields.indexOf(QLatin1Char(';'));
    if (maskFields.isEmpty() || delimiter == 0) {
        if (m_maskData) {
            m_maskData.reset(nullptr);
            m_maxLength = 32767;
            internalSetText(QString());
        }
        return;
    }
 
    if (delimiter == -1) {
        m_blank = QLatin1Char(' ');
        m_inputMask = maskFields;
    } else {
        m_inputMask = maskFields.left(delimiter);
        m_blank = (delimiter + 1 < maskFields.size()) ? maskFields[delimiter + 1] : QLatin1Char(' ');
    }
 
    // calculate m_maxLength / m_maskData length
    m_maxLength = 0;
    QChar c = u'\0';
    for (int i=0; i<m_inputMask.size(); i++) {
        c = m_inputMask.at(i);
        if (i > 0 && m_inputMask.at(i-1) == QLatin1Char('\\')) {
            m_maxLength++;
            continue;
        }
        if (c != QLatin1Char('\\') && c != QLatin1Char('!') &&
             c != QLatin1Char('<') && c != QLatin1Char('>') &&
             c != QLatin1Char('{') && c != QLatin1Char('}') &&
             c != QLatin1Char('[') && c != QLatin1Char(']'))
            m_maxLength++;
    }
 
    m_maskData.reset(new MaskInputData[m_maxLength]);
 
    MaskInputData::Casemode m = MaskInputData::NoCaseMode;
    c = u'\0';
    bool s;
    bool escape = false;
    int index = 0;
    for (int i = 0; i < m_inputMask.size(); i++) {
        c = m_inputMask.at(i);
        if (escape) {
            s = true;
            m_maskData[index].maskChar = c;
            m_maskData[index].separator = s;
            m_maskData[index].caseMode = m;
            index++;
            escape = false;
        } else if (c == QLatin1Char('<')) {
                m = MaskInputData::Lower;
        } else if (c == QLatin1Char('>')) {
            m = MaskInputData::Upper;
        } else if (c == QLatin1Char('!')) {
            m = MaskInputData::NoCaseMode;
        } else if (c != QLatin1Char('{') && c != QLatin1Char('}') && c != QLatin1Char('[') && c != QLatin1Char(']')) {
            switch (c.unicode()) {
            case 'A':
            case 'a':
            case 'N':
            case 'n':
            case 'X':
            case 'x':
            case '9':
            case '0':
            case 'D':
            case 'd':
            case '#':
            case 'H':
            case 'h':
            case 'B':
            case 'b':
                s = false;
                break;
            case '\\':
                escape = true;
                Q_FALLTHROUGH();
            default:
                s = true;
                break;
            }
 
            if (!escape) {
                m_maskData[index].maskChar = c;
                m_maskData[index].separator = s;
                m_maskData[index].caseMode = m;
                index++;
            }
        }
    }
    internalSetText(m_text);
}
 
 
bool QQuickTextInputPrivate::isValidInput(QChar key, QChar mask) const
{
    switch (mask.unicode()) {
    case 'A':
        if (key.isLetter())
            return true;
        break;
    case 'a':
        if (key.isLetter() || key == m_blank)
            return true;
        break;
    case 'N':
        if (key.isLetterOrNumber())
            return true;
        break;
    case 'n':
        if (key.isLetterOrNumber() || key == m_blank)
            return true;
        break;
    case 'X':
        if (key.isPrint() && key != m_blank)
            return true;
        break;
    case 'x':
        if (key.isPrint() || key == m_blank)
            return true;
        break;
    case '9':
        if (key.isNumber())
            return true;
        break;
    case '0':
        if (key.isNumber() || key == m_blank)
            return true;
        break;
    case 'D':
        if (key.isNumber() && key.digitValue() > 0)
            return true;
        break;
    case 'd':
        if ((key.isNumber() && key.digitValue() > 0) || key == m_blank)
            return true;
        break;
    case '#':
        if (key.isNumber() || key == QLatin1Char('+') || key == QLatin1Char('-') || key == m_blank)
            return true;
        break;
    case 'B':
        if (key == QLatin1Char('0') || key == QLatin1Char('1'))
            return true;
        break;
    case 'b':
        if (key == QLatin1Char('0') || key == QLatin1Char('1') || key == m_blank)
            return true;
        break;
    case 'H':
        if (key.isNumber() || (key >= QLatin1Char('a') && key <= QLatin1Char('f')) || (key >= QLatin1Char('A') && key <= QLatin1Char('F')))
            return true;
        break;
    case 'h':
        if (key.isNumber() || (key >= QLatin1Char('a') && key <= QLatin1Char('f')) || (key >= QLatin1Char('A') && key <= QLatin1Char('F')) || key == m_blank)
            return true;
        break;
    default:
        break;
    }
    return false;
}
 
QQuickTextInputPrivate::ValidatorState QQuickTextInputPrivate::hasAcceptableInput(const QString &str) const
{
#if QT_CONFIG(validator)
    QString textCopy = str;
    int cursorCopy = m_cursor;
    if (m_validator) {
        QValidator::State state = m_validator->validate(textCopy, cursorCopy);
        if (state != QValidator::Acceptable)
            return ValidatorState(state);
    }
#endif
 
    if (!m_maskData)
        return AcceptableInput;
 
    if (str.size() != m_maxLength)
        return InvalidInput;
 
    for (int i=0; i < m_maxLength; ++i) {
        if (m_maskData[i].separator) {
            if (str.at(i) != m_maskData[i].maskChar)
                return InvalidInput;
        } else {
            if (!isValidInput(str.at(i), m_maskData[i].maskChar))
                return InvalidInput;
        }
    }
    return AcceptableInput;
}
 
QString QQuickTextInputPrivate::maskString(uint pos, const QString &str, bool clear) const
{
    if (pos >= (uint)m_maxLength)
        return QString::fromLatin1("");
 
    QString fill;
    fill = clear ? clearString(0, m_maxLength) : m_text;
 
    int strIndex = 0;
    QString s = QString::fromLatin1("");
    int i = pos;
    while (i < m_maxLength) {
        if (strIndex < str.size()) {
            if (m_maskData[i].separator) {
                s += m_maskData[i].maskChar;
                if (str[strIndex] == m_maskData[i].maskChar)
                    strIndex++;
                ++i;
            } else {
                if (isValidInput(str[strIndex], m_maskData[i].maskChar)) {
                    switch (m_maskData[i].caseMode) {
                    case MaskInputData::Upper:
                        s += str[strIndex].toUpper();
                        break;
                    case MaskInputData::Lower:
                        s += str[strIndex].toLower();
                        break;
                    default:
                        s += str[strIndex];
                    }
                    ++i;
                } else {
                    // search for separator first
                    int n = findInMask(i, true, true, str[strIndex]);
                    if (n != -1) {
                        if (str.size() != 1 || i == 0 || (i > 0 && (!m_maskData[i-1].separator || m_maskData[i-1].maskChar != str[strIndex]))) {
                            s += QStringView{fill}.mid(i, n-i+1);
                            i = n + 1; // update i to find + 1
                        }
                    } else {
                        // search for valid m_blank if not
                        n = findInMask(i, true, false, str[strIndex]);
                        if (n != -1) {
                            s += QStringView{fill}.mid(i, n-i);
                            switch (m_maskData[n].caseMode) {
                            case MaskInputData::Upper:
                                s += str[strIndex].toUpper();
                                break;
                            case MaskInputData::Lower:
                                s += str[strIndex].toLower();
                                break;
                            default:
                                s += str[strIndex];
                            }
                            i = n + 1; // updates i to find + 1
                        }
                    }
                }
                ++strIndex;
            }
        } else
            break;
    }
 
    return s;
}
 
 
 
QString QQuickTextInputPrivate::clearString(uint pos, uint len) const
{
    if (pos >= (uint)m_maxLength)
        return QString();
 
    QString s;
    int end = qMin((uint)m_maxLength, pos + len);
    for (int i = pos; i < end; ++i)
        if (m_maskData[i].separator)
            s += m_maskData[i].maskChar;
        else
            s += m_blank;
 
    return s;
}
 
QString QQuickTextInputPrivate::stripString(const QString &str) const
{
    if (!m_maskData)
        return str;
 
    QString s;
    int end = qMin(m_maxLength, str.size());
    for (int i = 0; i < end; ++i) {
        if (m_maskData[i].separator)
            s += m_maskData[i].maskChar;
        else if (str[i] != m_blank)
            s += str[i];
    }
 
    return s;
}
 
int QQuickTextInputPrivate::findInMask(int pos, bool forward, bool findSeparator, QChar searchChar) const
{
    if (pos >= m_maxLength || pos < 0)
        return -1;
 
    int end = forward ? m_maxLength : -1;
    int step = forward ? 1 : -1;
    int i = pos;
 
    while (i != end) {
        if (findSeparator) {
            if (m_maskData[i].separator && m_maskData[i].maskChar == searchChar)
                return i;
        } else {
            if (!m_maskData[i].separator) {
                if (searchChar.isNull())
                    return i;
                else if (isValidInput(searchChar, m_maskData[i].maskChar))
                    return i;
            }
        }
        i += step;
    }
    return -1;
}
 
void QQuickTextInputPrivate::internalUndo(int until)
{
    if (!isUndoAvailable())
        return;
    cancelPasswordEchoTimer();
    internalDeselect();
    while (m_undoState && m_undoState > until) {
        Command& cmd = m_history[--m_undoState];
        switch (cmd.type) {
        case Insert:
            m_text.remove(cmd.pos, 1);
            m_cursor = cmd.pos;
            break;
        case SetSelection:
            m_selstart = cmd.selStart;
            m_selend = cmd.selEnd;
            m_cursor = cmd.pos;
            break;
        case Remove:
        case RemoveSelection:
            m_text.insert(cmd.pos, cmd.uc);
            m_cursor = cmd.pos + 1;
            break;
        case Delete:
        case DeleteSelection:
            m_text.insert(cmd.pos, cmd.uc);
            m_cursor = cmd.pos;
            break;
        case Separator:
            continue;
        }
        if (until < 0 && m_undoState) {
            Command& next = m_history[m_undoState-1];
            if (next.type != cmd.type
                    && next.type < RemoveSelection
                    && (cmd.type < RemoveSelection || next.type == Separator)) {
                break;
            }
        }
    }
    separate();
    m_textDirty = true;
}
 
void QQuickTextInputPrivate::internalRedo()
{
    if (!isRedoAvailable())
        return;
    internalDeselect();
    while (m_undoState < m_history.size()) {
        Command& cmd = m_history[m_undoState++];
        switch (cmd.type) {
        case Insert:
            m_text.insert(cmd.pos, cmd.uc);
            m_cursor = cmd.pos + 1;
            break;
        case SetSelection:
            m_selstart = cmd.selStart;
            m_selend = cmd.selEnd;
            m_cursor = cmd.pos;
            break;
        case Remove:
        case Delete:
        case RemoveSelection:
        case DeleteSelection:
            m_text.remove(cmd.pos, 1);
            m_selstart = cmd.selStart;
            m_selend = cmd.selEnd;
            m_cursor = cmd.pos;
            break;
        case Separator:
            m_selstart = cmd.selStart;
            m_selend = cmd.selEnd;
            m_cursor = cmd.pos;
            break;
        }
        if (m_undoState < m_history.size()) {
            Command& next = m_history[m_undoState];
            if (next.type != cmd.type
                    && cmd.type < RemoveSelection
                    && next.type != Separator
                    && (next.type < RemoveSelection || cmd.type == Separator)) {
                break;
            }
        }
    }
    m_textDirty = true;
}
 
void QQuickTextInputPrivate::emitUndoRedoChanged()
{
    Q_Q(QQuickTextInput);
    const bool previousUndo = canUndo;
    const bool previousRedo = canRedo;
 
    canUndo = isUndoAvailable();
    canRedo = isRedoAvailable();
 
    if (previousUndo != canUndo)
        emit q->canUndoChanged();
    if (previousRedo != canRedo)
        emit q->canRedoChanged();
}
 
bool QQuickTextInputPrivate::emitCursorPositionChanged()
{
    Q_Q(QQuickTextInput);
    if (m_cursor != m_lastCursorPos) {
        m_lastCursorPos = m_cursor;
 
        q->updateCursorRectangle();
        emit q->cursorPositionChanged();
 
        if (!hasSelectedText()) {
            if (lastSelectionStart != m_cursor) {
                lastSelectionStart = m_cursor;
                emit q->selectionStartChanged();
            }
            if (lastSelectionEnd != m_cursor) {
                lastSelectionEnd = m_cursor;
                emit q->selectionEndChanged();
            }
        }
 
#if QT_CONFIG(accessibility)
        if (QAccessible::isActive()) {
            if (QObject *acc = QQuickAccessibleAttached::findAccessible(q, QAccessible::EditableText)) {
                QAccessibleTextCursorEvent ev(acc, m_cursor);
                QAccessible::updateAccessibility(&ev);
            }
        }
#endif
 
        return true;
    }
    return false;
}
 
 
void QQuickTextInputPrivate::setBlinkingCursorEnabled(bool enable)
{
    if (enable == m_blinkEnabled)
        return;
 
    m_blinkEnabled = enable;
    updateCursorBlinking();
 
    if (enable)
        connect(qApp->styleHints(), &QStyleHints::cursorFlashTimeChanged, this, &QQuickTextInputPrivate::updateCursorBlinking);
    else
        disconnect(qApp->styleHints(), &QStyleHints::cursorFlashTimeChanged, this, &QQuickTextInputPrivate::updateCursorBlinking);
}
 
void QQuickTextInputPrivate::updateCursorBlinking()
{
    Q_Q(QQuickTextInput);
 
    if (m_blinkTimer) {
        q->killTimer(m_blinkTimer);
        m_blinkTimer = 0;
    }
 
    if (m_blinkEnabled && cursorVisible && !cursorItem && !m_readOnly) {
        int flashTime = QGuiApplication::styleHints()->cursorFlashTime();
        if (flashTime >= 2)
            m_blinkTimer = q->startTimer(flashTime / 2);
    }
 
    m_blinkStatus = 1;
    updateType = UpdatePaintNode;
    q->polish();
    q->update();
}
 
void QQuickTextInput::timerEvent(QTimerEvent *event)
{
    Q_D(QQuickTextInput);
    if (event->timerId() == d->m_blinkTimer) {
        d->m_blinkStatus = !d->m_blinkStatus;
        d->updateType = QQuickTextInputPrivate::UpdatePaintNode;
        polish();
        update();
    } else if (event->timerId() == d->m_passwordEchoTimer.timerId()) {
        d->m_passwordEchoTimer.stop();
        d->updateDisplayText();
        updateCursorRectangle();
    }
}
 
void QQuickTextInputPrivate::processKeyEvent(QKeyEvent* event)
{
    Q_Q(QQuickTextInput);
 
    if (event->key() == Qt::Key_Enter || event->key() == Qt::Key_Return) {
        if (hasAcceptableInput(m_text) == AcceptableInput || fixup()) {
 
            QInputMethod *inputMethod = QGuiApplication::inputMethod();
            inputMethod->commit();
 
            if (activeFocus) {
                // If we lost focus after hiding the virtual keyboard, we've already emitted
                // editingFinished from handleFocusEvent. Otherwise we emit it now.
                emit q->editingFinished();
            }
 
            emit q->accepted();
        }
        event->ignore();
        return;
    }
 
    if (m_blinkEnabled)
        updateCursorBlinking();
 
    if (m_echoMode == QQuickTextInput::PasswordEchoOnEdit
        && !m_passwordEchoEditing
        && !m_readOnly
        && !event->text().isEmpty()
        && !(event->modifiers() & Qt::ControlModifier)) {
        // Clear the edit and reset to normal echo mode while editing; the
        // echo mode switches back when the edit loses focus
        // ### resets current content.  dubious code; you can
        // navigate with keys up, down, back, and select(?), but if you press
        // "left" or "right" it clears?
        updatePasswordEchoEditing(true);
        clear();
    }
 
    bool unknown = false;
#if QT_CONFIG(shortcut)
    bool visual = cursorMoveStyle() == Qt::VisualMoveStyle;
#endif
 
    if (false) {
    }
#if QT_CONFIG(shortcut)
    else if (event == QKeySequence::Undo) {
        q->undo();
    }
    else if (event == QKeySequence::Redo) {
        q->redo();
    }
    else if (event == QKeySequence::SelectAll) {
        selectAll();
    }
#if QT_CONFIG(clipboard)
    else if (event == QKeySequence::Copy) {
        copy();
    }
    else if (event == QKeySequence::Paste) {
        if (!m_readOnly) {
            QClipboard::Mode mode = QClipboard::Clipboard;
            paste(mode);
        }
    }
    else if (event == QKeySequence::Cut) {
        q->cut();
    }
    else if (event == QKeySequence::DeleteEndOfLine) {
        if (!m_readOnly)
            deleteEndOfLine();
    }
#endif // clipboard
    else if (event == QKeySequence::MoveToStartOfLine || event == QKeySequence::MoveToStartOfBlock) {
        home(0);
    }
    else if (event == QKeySequence::MoveToEndOfLine || event == QKeySequence::MoveToEndOfBlock) {
        end(0);
    }
    else if (event == QKeySequence::SelectStartOfLine || event == QKeySequence::SelectStartOfBlock) {
        home(1);
    }
    else if (event == QKeySequence::SelectEndOfLine || event == QKeySequence::SelectEndOfBlock) {
        end(1);
    }
    else if (event == QKeySequence::MoveToNextChar) {
        if (hasSelectedText()) {
            moveCursor(selectionEnd(), false);
        } else {
            cursorForward(0, visual ? 1 : (layoutDirection() == Qt::LeftToRight ? 1 : -1));
        }
    }
    else if (event == QKeySequence::SelectNextChar) {
        cursorForward(1, visual ? 1 : (layoutDirection() == Qt::LeftToRight ? 1 : -1));
    }
    else if (event == QKeySequence::MoveToPreviousChar) {
        if (hasSelectedText()) {
            moveCursor(selectionStart(), false);
        } else {
            cursorForward(0, visual ? -1 : (layoutDirection() == Qt::LeftToRight ? -1 : 1));
        }
    }
    else if (event == QKeySequence::SelectPreviousChar) {
        cursorForward(1, visual ? -1 : (layoutDirection() == Qt::LeftToRight ? -1 : 1));
    }
    else if (event == QKeySequence::MoveToNextWord) {
        if (m_echoMode == QQuickTextInput::Normal)
            layoutDirection() == Qt::LeftToRight ? cursorWordForward(0) : cursorWordBackward(0);
        else
            layoutDirection() == Qt::LeftToRight ? end(0) : home(0);
    }
    else if (event == QKeySequence::MoveToPreviousWord) {
        if (m_echoMode == QQuickTextInput::Normal)
            layoutDirection() == Qt::LeftToRight ? cursorWordBackward(0) : cursorWordForward(0);
        else if (!m_readOnly) {
            layoutDirection() == Qt::LeftToRight ? home(0) : end(0);
        }
    }
    else if (event == QKeySequence::SelectNextWord) {
        if (m_echoMode == QQuickTextInput::Normal)
            layoutDirection() == Qt::LeftToRight ? cursorWordForward(1) : cursorWordBackward(1);
        else
            layoutDirection() == Qt::LeftToRight ? end(1) : home(1);
    }
    else if (event == QKeySequence::SelectPreviousWord) {
        if (m_echoMode == QQuickTextInput::Normal)
            layoutDirection() == Qt::LeftToRight ? cursorWordBackward(1) : cursorWordForward(1);
        else
            layoutDirection() == Qt::LeftToRight ? home(1) : end(1);
    }
    else if (event == QKeySequence::Delete) {
        if (!m_readOnly)
            del();
    }
    else if (event == QKeySequence::DeleteEndOfWord) {
        if (!m_readOnly)
            deleteEndOfWord();
    }
    else if (event == QKeySequence::DeleteStartOfWord) {
        if (!m_readOnly)
            deleteStartOfWord();
    } else if (event == QKeySequence::DeleteCompleteLine) {
        if (!m_readOnly) {
            selectAll();
#if QT_CONFIG(clipboard)
            copy();
#endif
            del();
        }
    }
#endif // shortcut
    else {
        bool handled = false;
        if (event->modifiers() & Qt::ControlModifier) {
            switch (event->key()) {
            case Qt::Key_Backspace:
                if (!m_readOnly)
                    deleteStartOfWord();
                break;
            default:
                if (!handled)
                    unknown = true;
            }
        } else { // ### check for *no* modifier
            switch (event->key()) {
            case Qt::Key_Backspace:
                if (!m_readOnly) {
                    backspace();
                }
                break;
            default:
                if (!handled)
                    unknown = true;
            }
        }
    }
 
    if (event->key() == Qt::Key_Direction_L || event->key() == Qt::Key_Direction_R) {
        setLayoutDirection((event->key() == Qt::Key_Direction_L) ? Qt::LeftToRight : Qt::RightToLeft);
        unknown = false;
    }
 
    if (unknown && !m_readOnly) {
        if (m_inputControl->isAcceptableInput(event)) {
            if (overwriteMode
                // no need to call del() if we have a selection, insert
                // does it already
                && !hasSelectedText()
                && !(m_cursor == q_func()->text().size())) {
                del();
            }
 
            insert(event->text());
            event->accept();
            return;
        }
    }
 
    if (unknown)
        event->ignore();
    else
        event->accept();
}
 
void QQuickTextInputPrivate::deleteStartOfWord()
{
    int priorState = m_undoState;
    Command cmd(SetSelection, m_cursor, u'\0', m_selstart, m_selend);
    separate();
    cursorWordBackward(true);
    addCommand(cmd);
    removeSelectedText();
    finishChange(priorState);
}
 
void QQuickTextInputPrivate::deleteEndOfWord()
{
    int priorState = m_undoState;
    Command cmd(SetSelection, m_cursor, u'\0', m_selstart, m_selend);
    separate();
    cursorWordForward(true);
    // moveCursor (sometimes) calls separate() so we need to add the command after that so the
    // cursor position and selection are restored in the same undo operation as the remove.
    addCommand(cmd);
    removeSelectedText();
    finishChange(priorState);
}
 
void QQuickTextInputPrivate::deleteEndOfLine()
{
    int priorState = m_undoState;
    Command cmd(SetSelection, m_cursor, u'\0', m_selstart, m_selend);
    separate();
    setSelection(m_cursor, end());
    addCommand(cmd);
    removeSelectedText();
    finishChange(priorState);
}
 
void QQuickTextInput::ensureVisible(int position)
{
    Q_D(QQuickTextInput);
    d->ensureVisible(position);
    updateCursorRectangle(false);
}
 
void QQuickTextInput::clear()
{
    Q_D(QQuickTextInput);
    d->cancelInput();
    d->clear();
}
 
qreal QQuickTextInput::padding() const
{
    Q_D(const QQuickTextInput);
    return d->padding();
}
 
void QQuickTextInput::setPadding(qreal padding)
{
    Q_D(QQuickTextInput);
    if (qFuzzyCompare(d->padding(), padding))
        return;
 
    d->extra.value().padding = padding;
    d->updateLayout();
    updateCursorRectangle();
    emit paddingChanged();
    if (!d->extra.isAllocated() || !d->extra->explicitTopPadding)
        emit topPaddingChanged();
    if (!d->extra.isAllocated() || !d->extra->explicitLeftPadding)
        emit leftPaddingChanged();
    if (!d->extra.isAllocated() || !d->extra->explicitRightPadding)
        emit rightPaddingChanged();
    if (!d->extra.isAllocated() || !d->extra->explicitBottomPadding)
        emit bottomPaddingChanged();
}
 
void QQuickTextInput::resetPadding()
{
    setPadding(0);
}
 
qreal QQuickTextInput::topPadding() const
{
    Q_D(const QQuickTextInput);
    if (d->extra.isAllocated() && d->extra->explicitTopPadding)
        return d->extra->topPadding;
    return d->padding();
}
 
void QQuickTextInput::setTopPadding(qreal padding)
{
    Q_D(QQuickTextInput);
    d->setTopPadding(padding);
}
 
void QQuickTextInput::resetTopPadding()
{
    Q_D(QQuickTextInput);
    d->setTopPadding(0, true);
}
 
qreal QQuickTextInput::leftPadding() const
{
    Q_D(const QQuickTextInput);
    if (d->extra.isAllocated() && d->extra->explicitLeftPadding)
        return d->extra->leftPadding;
    return d->padding();
}
 
void QQuickTextInput::setLeftPadding(qreal padding)
{
    Q_D(QQuickTextInput);
    d->setLeftPadding(padding);
}
 
void QQuickTextInput::resetLeftPadding()
{
    Q_D(QQuickTextInput);
    d->setLeftPadding(0, true);
}
 
qreal QQuickTextInput::rightPadding() const
{
    Q_D(const QQuickTextInput);
    if (d->extra.isAllocated() && d->extra->explicitRightPadding)
        return d->extra->rightPadding;
    return d->padding();
}
 
void QQuickTextInput::setRightPadding(qreal padding)
{
    Q_D(QQuickTextInput);
    d->setRightPadding(padding);
}
 
void QQuickTextInput::resetRightPadding()
{
    Q_D(QQuickTextInput);
    d->setRightPadding(0, true);
}
 
qreal QQuickTextInput::bottomPadding() const
{
    Q_D(const QQuickTextInput);
    if (d->extra.isAllocated() && d->extra->explicitBottomPadding)
        return d->extra->bottomPadding;
    return d->padding();
}
 
void QQuickTextInput::setBottomPadding(qreal padding)
{
    Q_D(QQuickTextInput);
    d->setBottomPadding(padding);
}
 
void QQuickTextInput::resetBottomPadding()
{
    Q_D(QQuickTextInput);
    d->setBottomPadding(0, true);
}
 
#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
void QQuickTextInput::setOldSelectionDefault()
{
    Q_D(QQuickTextInput);
    d->selectByMouse = false;
    d->selectByTouchDrag = true;
    qCDebug(lcQuickTextInput, "pre-6.4 behavior chosen: selectByMouse defaults false; if enabled, touchscreen acts like a mouse");
}
 
// TODO in 6.7.0: remove the note about versions prior to 6.4 in selectByMouse() documentation
QQuickPre64TextInput::QQuickPre64TextInput(QQuickItem *parent)
    : QQuickTextInput(parent)
{
    setOldSelectionDefault();
}
#endif
 
QT_END_NAMESPACE
 
#include "moc_qquicktextinput_p.cpp"