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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "InterfaceInitFuncs.h"
#include "AccessibleWrap.h"
#include "nsAccUtils.h"
#include "nsCoreUtils.h"
#include "nsMai.h"
#include "mozilla/Likely.h"
#include "mozilla/a11y/ProxyAccessible.h"
using namespace mozilla::a11y;
extern "C" {
static AtkObject*
refAccessibleAtPointCB(AtkComponent* aComponent, gint aAccX, gint aAccY,
AtkCoordType aCoordType)
{
return refAccessibleAtPointHelper(ATK_OBJECT(aComponent),
aAccX, aAccY, aCoordType);
}
static void
getExtentsCB(AtkComponent* aComponent, gint* aX, gint* aY,
gint* aWidth, gint* aHeight, AtkCoordType aCoordType)
{
getExtentsHelper(ATK_OBJECT(aComponent),
aX, aY, aWidth, aHeight, aCoordType);
}
static gboolean
grabFocusCB(AtkComponent* aComponent)
{
AtkObject* atkObject = ATK_OBJECT(aComponent);
AccessibleWrap* accWrap = GetAccessibleWrap(atkObject);
if (accWrap) {
accWrap->TakeFocus();
return TRUE;
}
ProxyAccessible* proxy = GetProxy(atkObject);
if (proxy) {
proxy->TakeFocus();
return TRUE;
}
return FALSE;
}
}
AtkObject*
refAccessibleAtPointHelper(AtkObject* aAtkObj, gint aX, gint aY,
AtkCoordType aCoordType)
{
AccessibleWrap* accWrap = GetAccessibleWrap(aAtkObj);
if (accWrap) {
if (accWrap->IsDefunct() || nsAccUtils::MustPrune(accWrap)) {
return nullptr;
}
// Accessible::ChildAtPoint(x,y) is in screen pixels.
if (aCoordType == ATK_XY_WINDOW) {
nsIntPoint winCoords =
nsCoreUtils::GetScreenCoordsForWindow(accWrap->GetNode());
aX += winCoords.x;
aY += winCoords.y;
}
Accessible* accAtPoint = accWrap->ChildAtPoint(aX, aY,
Accessible::eDirectChild);
if (!accAtPoint) {
return nullptr;
}
AtkObject* atkObj = AccessibleWrap::GetAtkObject(accAtPoint);
if (atkObj) {
g_object_ref(atkObj);
}
return atkObj;
}
if (ProxyAccessible* proxy = GetProxy(aAtkObj)) {
ProxyAccessible* result =
proxy->AccessibleAtPoint(aX, aY, aCoordType == ATK_XY_WINDOW);
AtkObject* atkObj = result ? GetWrapperFor(result) : nullptr;
if (atkObj) {
g_object_ref(atkObj);
}
return atkObj;
}
return nullptr;
}
void
getExtentsHelper(AtkObject* aAtkObj,
gint* aX, gint* aY, gint* aWidth, gint* aHeight,
AtkCoordType aCoordType)
{
AccessibleWrap* accWrap = GetAccessibleWrap(aAtkObj);
*aX = *aY = *aWidth = *aHeight = 0;
if (accWrap) {
if (accWrap->IsDefunct()) {
return;
}
nsIntRect screenRect = accWrap->Bounds();
if (screenRect.IsEmpty())
return;
if (aCoordType == ATK_XY_WINDOW) {
nsIntPoint winCoords =
nsCoreUtils::GetScreenCoordsForWindow(accWrap->GetNode());
screenRect.x -= winCoords.x;
screenRect.y -= winCoords.y;
}
*aX = screenRect.x;
*aY = screenRect.y;
*aWidth = screenRect.width;
*aHeight = screenRect.height;
return;
}
if (ProxyAccessible* proxy = GetProxy(aAtkObj)) {
proxy->Extents(aCoordType == ATK_XY_WINDOW, aX, aY, aWidth, aHeight);
}
}
void
componentInterfaceInitCB(AtkComponentIface* aIface)
{
NS_ASSERTION(aIface, "Invalid Interface");
if(MOZ_UNLIKELY(!aIface))
return;
/*
* Use default implementation in atk for contains, get_position,
* and get_size
*/
aIface->ref_accessible_at_point = refAccessibleAtPointCB;
aIface->get_extents = getExtentsCB;
aIface->grab_focus = grabFocusCB;
}
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