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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_TEXTCHILDPROVIDER_WIN_H_
#define UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_TEXTCHILDPROVIDER_WIN_H_
#include "ui/accessibility/ax_export.h"
#include "ui/accessibility/platform/ax_platform_node_win.h"
namespace ui {
class AX_EXPORT AXPlatformNodeTextChildProviderWin
: public CComObjectRootEx<CComMultiThreadModel>,
public ITextChildProvider {
public:
BEGIN_COM_MAP(AXPlatformNodeTextChildProviderWin)
COM_INTERFACE_ENTRY(ITextChildProvider)
END_COM_MAP()
AXPlatformNodeTextChildProviderWin();
~AXPlatformNodeTextChildProviderWin();
static AXPlatformNodeTextChildProviderWin* Create(
ui::AXPlatformNodeWin* owner);
static void CreateIUnknown(AXPlatformNodeWin* owner, IUnknown** unknown);
// Retrieves this element's nearest ancestor provider that supports the Text
// control pattern. If the element does not have an ancestor which supports
// the Text control pattern, nullptr is returned. Note, an element which
// supports the Text control pattern is not an ancestor of itself.
STDMETHOD(get_TextContainer)(IRawElementProviderSimple** pRetVal) override;
// Retrieves a text range that encloses this child element. If the element
// does not have an ancestor which supports the Text control pattern, nullptr
// is returned. Note, an element which supports the Text control pattern is
// not an ancestor of itself.
STDMETHOD(get_TextRange)(ITextRangeProvider** pRetVal) override;
// Helper function to get_TextContainer().
static AXPlatformNodeWin* GetTextContainer(AXPlatformNodeWin* descendant);
private:
AXPlatformNodeWin* owner() const;
CComPtr<AXPlatformNodeWin> owner_;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_PLATFORM_AX_PLATFORM_NODE_TEXTCHILDPROVIDER_WIN_H_