qwindowsuiatextrangeprovider.h

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// Copyright (C) 2017 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
 
#ifndef QWINDOWSUIATEXTRANGEPROVIDER_H
#define QWINDOWSUIATEXTRANGEPROVIDER_H
 
#include <QtGui/qtguiglobal.h>
#if QT_CONFIG(accessibility)
 
#include "qwindowsuiabaseprovider.h"
 
QT_BEGIN_NAMESPACE
 
// Implements the Text Range control pattern provider. Used for text controls.
class QWindowsUiaTextRangeProvider : public QWindowsUiaBaseProvider,
                                     public QComObject<ITextRangeProvider>
{
    Q_DISABLE_COPY_MOVE(QWindowsUiaTextRangeProvider)
public:
    explicit QWindowsUiaTextRangeProvider(QAccessible::Id id, int startOffset, int endOffset);
    virtual ~QWindowsUiaTextRangeProvider();
 
    // ITextRangeProvider
    HRESULT STDMETHODCALLTYPE AddToSelection() override;
    HRESULT STDMETHODCALLTYPE Clone(ITextRangeProvider **pRetVal) override;
    HRESULT STDMETHODCALLTYPE Compare(ITextRangeProvider *range, BOOL *pRetVal) override;
    HRESULT STDMETHODCALLTYPE CompareEndpoints(TextPatternRangeEndpoint endpoint, ITextRangeProvider *targetRange, TextPatternRangeEndpoint targetEndpoint, int *pRetVal) override;
    HRESULT STDMETHODCALLTYPE ExpandToEnclosingUnit(TextUnit unit) override;
    HRESULT STDMETHODCALLTYPE FindAttribute(TEXTATTRIBUTEID attributeId, VARIANT val, BOOL backward, ITextRangeProvider **pRetVal) override;
    HRESULT STDMETHODCALLTYPE FindText(BSTR text, BOOL backward, BOOL ignoreCase, ITextRangeProvider **pRetVal) override;
    HRESULT STDMETHODCALLTYPE GetAttributeValue(TEXTATTRIBUTEID attributeId, VARIANT *pRetVal) override;
    HRESULT STDMETHODCALLTYPE GetBoundingRectangles(SAFEARRAY **pRetVal) override;
    HRESULT STDMETHODCALLTYPE GetChildren(SAFEARRAY **pRetVal) override;
    HRESULT STDMETHODCALLTYPE GetEnclosingElement(IRawElementProviderSimple **pRetVal) override;
    HRESULT STDMETHODCALLTYPE GetText(int maxLength, BSTR *pRetVal) override;
    HRESULT STDMETHODCALLTYPE Move(TextUnit unit, int count, int *pRetVal) override;
    HRESULT STDMETHODCALLTYPE MoveEndpointByRange(TextPatternRangeEndpoint endpoint, ITextRangeProvider *targetRange, TextPatternRangeEndpoint targetEndpoint) override;
    HRESULT STDMETHODCALLTYPE MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit unit, int count, int *pRetVal) override;
    HRESULT STDMETHODCALLTYPE RemoveFromSelection() override;
    HRESULT STDMETHODCALLTYPE ScrollIntoView(BOOL alignToTop) override;
    HRESULT STDMETHODCALLTYPE Select() override;
 
private:
    HRESULT unselect();
    QString valueForIA2Attribute(QAccessibleTextInterface *textInterface, const QString &key);
    TextDecorationLineStyle uiaLineStyleForIA2LineStyle(const QString &ia2LineStyle);
    int m_startOffset;
    int m_endOffset;
};
 
QT_END_NAMESPACE
 
#endif // QT_CONFIG(accessibility)
 
#endif // QWINDOWSUIATEXTRANGEPROVIDER_H