qaccessible2.cpp

奇趣公司比较新的qt/emd版本

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#include "qaccessible2.h"
#include "qapplication.h"
#include "qclipboard.h"

#ifndef QT_NO_ACCESSIBILITY

/*!
    \namespace QAccessible2
    \ingroup accessibility
    \internal
    \preliminary

    \brief The QAccessible2 namespace defines constants relating to
    IAccessible2-based interfaces

    \link http://www.linux-foundation.org/en/Accessibility/IAccessible2 IAccessible2 Specification \endlink
*/

/*!
    \class QAccessibleTextInterface

    \ingroup accessibility
    \internal
    \preliminary

    \brief The QAccessibleTextInterface class implements support for
    the IAccessibleText interface.

    \link http://www.linux-foundation.org/en/Accessibility/IAccessible2 IAccessible2 Specification \endlink
*/

/*!
    \class QAccessibleEditableTextInterface
    \ingroup accessibility
    \internal
    \preliminary

    \brief The QAccessibleEditableTextInterface class implements support for
    the IAccessibleEditableText interface.

    \link http://www.linux-foundation.org/en/Accessibility/IAccessible2 IAccessible2 Specification \endlink
*/

/*!
    \class QAccessibleSimpleEditableTextInterface
    \ingroup accessibility
    \internal
    \preliminary

    \brief The QAccessibleSimpleEditableTextInterface class is a convenience class for
    text-based widgets.

    \link http://www.linux-foundation.org/en/Accessibility/IAccessible2 IAccessible2 Specification \endlink
*/

/*!
    \class QAccessibleValueInterface
    \ingroup accessibility
    \internal
    \preliminary

    \brief The QAccessibleValueInterface class implements support for
    the IAccessibleValue interface.

    \link http://www.linux-foundation.org/en/Accessibility/IAccessible2 IAccessible2 Specification \endlink
*/

QAccessibleSimpleEditableTextInterface::QAccessibleSimpleEditableTextInterface(
                QAccessibleInterface *accessibleInterface)
    : iface(accessibleInterface)
{
    Q_ASSERT(iface);
}

#ifndef QT_NO_CLIPBOARD
static QString textForRange(QAccessibleInterface *iface, int startOffset, int endOffset)
{
    return iface->text(QAccessible::Value, 0).mid(startOffset, endOffset - startOffset);
}
#endif

void QAccessibleSimpleEditableTextInterface::copyText(int startOffset, int endOffset)
{
#ifdef QT_NO_CLIPBOARD
    Q_UNUSED(startOffset);
    Q_UNUSED(endOffset);
#else
    QApplication::clipboard()->setText(textForRange(iface, startOffset, endOffset));
#endif
}

void QAccessibleSimpleEditableTextInterface::deleteText(int startOffset, int endOffset)
{
    QString txt = iface->text(QAccessible::Value, 0);
    txt.remove(startOffset, endOffset - startOffset);
    iface->setText(QAccessible::Value, 0, txt);
}

void QAccessibleSimpleEditableTextInterface::insertText(int offset, const QString &text)
{
    QString txt = iface->text(QAccessible::Value, 0);
    txt.insert(offset, text);
    iface->setText(QAccessible::Value, 0, txt);
}

void QAccessibleSimpleEditableTextInterface::cutText(int startOffset, int endOffset)
{
#ifdef QT_NO_CLIPBOARD
    Q_UNUSED(startOffset);
    Q_UNUSED(endOffset);
#else
    QString sub = textForRange(iface, startOffset, endOffset);
    deleteText(startOffset, endOffset);
    QApplication::clipboard()->setText(sub);
#endif
}

void QAccessibleSimpleEditableTextInterface::pasteText(int offset)
{
#ifdef QT_NO_CLIPBOARD
    Q_UNUSED(offset);
#else
    QString txt = iface->text(QAccessible::Value, 0);
    txt.insert(offset, QApplication::clipboard()->text());
    iface->setText(QAccessible::Value, 0, txt);
#endif
}

void QAccessibleSimpleEditableTextInterface::replaceText(int startOffset, int endOffset, const QString &text)
{
    QString txt = iface->text(QAccessible::Value, 0);
    txt.replace(startOffset, endOffset - startOffset, text);
    iface->setText(QAccessible::Value, 0, txt);
}

#endif // QT_NO_ACCESSIBILITY