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/*
* Copyright (C) 2008 Nuanti Ltd.
* Copyright (C) 2009 Jan Alonzo
* Copyright (C) 2009, 2012 Igalia S.L.
*
* Portions from Mozilla a11y, copyright as follows:
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Sun Microsystems, Inc.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "WebKitAccessibleInterfaceComponent.h"
#if ENABLE(ACCESSIBILITY)
#include "AccessibilityObject.h"
#include "FrameView.h"
#include "IntRect.h"
#include "RenderLayer.h"
#include "WebKitAccessible.h"
#include "WebKitAccessibleUtil.h"
using namespace WebCore;
static IntPoint atkToContents(const AccessibilityObject& coreObject, AtkCoordType coordType, gint x, gint y)
{
auto* frameView = coreObject.documentFrameView();
if (!frameView)
return { x, y };
switch (coordType) {
case ATK_XY_SCREEN:
return frameView->screenToContents({ x, y });
case ATK_XY_WINDOW:
return frameView->windowToContents({ x, y });
#if ATK_CHECK_VERSION(2, 30, 0)
case ATK_XY_PARENT:
RELEASE_ASSERT_NOT_REACHED();
#endif
}
return { x, y };
}
static AtkObject* webkitAccessibleComponentRefAccessibleAtPoint(AtkComponent* component, gint x, gint y, AtkCoordType coordType)
{
auto* accessible = WEBKIT_ACCESSIBLE(component);
returnValIfWebKitAccessibleIsInvalid(accessible, nullptr);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessible);
auto* target = downcast<AccessibilityObject>(coreObject.accessibilityHitTest(atkToContents(coreObject, coordType, x, y)));
if (!target)
return nullptr;
if (auto* wrapper = target->wrapper())
return ATK_OBJECT(g_object_ref(wrapper));
return nullptr;
}
static void webkitAccessibleComponentGetExtents(AtkComponent* component, gint* x, gint* y, gint* width, gint* height, AtkCoordType coordType)
{
auto* accessible = WEBKIT_ACCESSIBLE(component);
returnIfWebKitAccessibleIsInvalid(accessible);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessible);
contentsRelativeToAtkCoordinateType(&coreObject, coordType, snappedIntRect(coreObject.elementRect()), x, y, width, height);
}
static gboolean webkitAccessibleComponentGrabFocus(AtkComponent* component)
{
auto* accessible = WEBKIT_ACCESSIBLE(component);
returnValIfWebKitAccessibleIsInvalid(accessible, FALSE);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessible);
coreObject.setFocused(true);
return coreObject.isFocused();
}
#if ATK_CHECK_VERSION(2, 30, 0)
static gboolean webkitAccessibleComponentScrollTo(AtkComponent* component, AtkScrollType scrollType)
{
auto* accessible = WEBKIT_ACCESSIBLE(component);
returnValIfWebKitAccessibleIsInvalid(accessible, FALSE);
ScrollAlignment alignX;
ScrollAlignment alignY;
switch (scrollType) {
case ATK_SCROLL_TOP_LEFT:
alignX = ScrollAlignment::alignLeftAlways;
alignY = ScrollAlignment::alignTopAlways;
break;
case ATK_SCROLL_BOTTOM_RIGHT:
alignX = ScrollAlignment::alignRightAlways;
alignY = ScrollAlignment::alignBottomAlways;
break;
case ATK_SCROLL_TOP_EDGE:
case ATK_SCROLL_BOTTOM_EDGE:
// Align to a particular edge is not supported, it's always the closest edge.
alignX = ScrollAlignment::alignCenterIfNeeded;
alignY = ScrollAlignment::alignToEdgeIfNeeded;
break;
case ATK_SCROLL_LEFT_EDGE:
case ATK_SCROLL_RIGHT_EDGE:
// Align to a particular edge is not supported, it's always the closest edge.
alignX = ScrollAlignment::alignToEdgeIfNeeded;
alignY = ScrollAlignment::alignCenterIfNeeded;
break;
case ATK_SCROLL_ANYWHERE:
alignX = ScrollAlignment::alignCenterIfNeeded;
alignY = ScrollAlignment::alignCenterIfNeeded;
break;
}
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessible);
coreObject.scrollToMakeVisible({ SelectionRevealMode::Reveal, alignX, alignY, ShouldAllowCrossOriginScrolling::Yes });
return TRUE;
}
static gboolean webkitAccessibleComponentScrollToPoint(AtkComponent* component, AtkCoordType coordType, gint x, gint y)
{
auto* accessible = WEBKIT_ACCESSIBLE(component);
returnValIfWebKitAccessibleIsInvalid(accessible, FALSE);
auto& coreObject = webkitAccessibleGetAccessibilityObject(accessible);
IntPoint point(x, y);
if (coordType == ATK_XY_SCREEN) {
if (auto* frameView = coreObject.documentFrameView())
point = frameView->contentsToWindow(frameView->screenToContents(point));
}
coreObject.scrollToGlobalPoint(point);
return TRUE;
}
#endif
void webkitAccessibleComponentInterfaceInit(AtkComponentIface* iface)
{
iface->ref_accessible_at_point = webkitAccessibleComponentRefAccessibleAtPoint;
iface->get_extents = webkitAccessibleComponentGetExtents;
iface->grab_focus = webkitAccessibleComponentGrabFocus;
#if ATK_CHECK_VERSION(2, 30, 0)
iface->scroll_to = webkitAccessibleComponentScrollTo;
iface->scroll_to_point = webkitAccessibleComponentScrollToPoint;
#endif
}
#endif // ENABLE(ACCESSIBILITY)
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