gecko/widget/windows/winrt/UIAAccessibilityBridge.cpp

143 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#if defined(ACCESSIBILITY)
#include "UIAAccessibilityBridge.h"
#include "MetroUtils.h"
#include <OAIdl.h>
#include "nsIAccessibleEvent.h"
#include "nsIAccessibleEditableText.h"
#include "nsIPersistentProperties2.h"
// generated
#include "UIABridge.h"
#include <wrl/implements.h>
//#define DEBUG_BRIDGE
#if !defined(DEBUG_BRIDGE)
#undef LogThread
#undef LogFunction
#undef Log
#define LogThread()
#define LogFunction()
#define Log(...)
#endif
using namespace mozilla::a11y;
namespace mozilla {
namespace widget {
namespace winrt {
using namespace Microsoft::WRL;
NS_IMPL_ISUPPORTS1(AccessibilityBridge, nsIObserver)
nsresult
AccessibilityBridge::Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *aData)
{
nsCOMPtr<nsIAccessibleEvent> ev = do_QueryInterface(aSubject);
if (!ev) {
return NS_OK;
}
uint32_t eventType = 0;
ev->GetEventType(&eventType);
switch (eventType) {
case nsIAccessibleEvent::EVENT_FOCUS:
Log(L"EVENT_FOCUS");
{
nsCOMPtr<nsIAccessible> item;
ev->GetAccessible(getter_AddRefs(item));
Accessible* access = (Accessible*)item.get();
Log(L"Focus element flags: %d %d %d",
((access->NativeState() & mozilla::a11y::states::EDITABLE) > 0),
((access->NativeState() & mozilla::a11y::states::FOCUSABLE) > 0),
((access->NativeState() & mozilla::a11y::states::READONLY) > 0)
);
bool focusable = (((access->NativeState() & mozilla::a11y::states::EDITABLE) > 0) &&
((access->NativeState() & mozilla::a11y::states::READONLY) == 0));
if (focusable) {
Log(L"focus item can be focused");
// we have a text input
Microsoft::WRL::ComPtr<IUIAElement> bridgePtr;
mBridge.As(&bridgePtr);
if (bridgePtr) {
bridgePtr->SetFocusInternal(reinterpret_cast<LONG_PTR>(item.get()));
}
} else {
Log(L"focus item can't have focus");
Microsoft::WRL::ComPtr<IUIAElement> bridgePtr;
mBridge.As(&bridgePtr);
if (bridgePtr) {
bridgePtr->ClearFocus();
}
}
}
break;
/*
case nsIAccessibleEvent::EVENT_SHOW:
Log(L"EVENT_SHOW");
break;
case nsIAccessibleEvent::EVENT_HIDE:
Log(L"EVENT_HIDE");
break;
case nsIAccessibleEvent::EVENT_STATE_CHANGE:
Log(L"EVENT_STATE_CHANGE");
break;
case nsIAccessibleEvent::EVENT_SELECTION:
Log(L"EVENT_SELECTION");
break;
case nsIAccessibleEvent::EVENT_SELECTION_ADD:
Log(L"EVENT_SELECTION_ADD");
break;
case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
Log(L"EVENT_SELECTION_REMOVE");
break;
case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
Log(L"EVENT_SELECTION_WITHIN");
break;
case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
Log(L"EVENT_TEXT_CARET_MOVED");
break;
case nsIAccessibleEvent::EVENT_TEXT_CHANGED:
Log(L"EVENT_TEXT_CHANGED");
break;
case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
Log(L"EVENT_TEXT_INSERTED");
break;
case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
Log(L"EVENT_TEXT_REMOVED");
break;
case nsIAccessibleEvent::EVENT_TEXT_UPDATED:
Log(L"EVENT_TEXT_UPDATED");
break;
case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
Log(L"EVENT_TEXT_SELECTION_CHANGED");
break;
case nsIAccessibleEvent::EVENT_SECTION_CHANGED:
Log(L"EVENT_SECTION_CHANGED");
break;
case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE:
Log(L"EVENT_WINDOW_ACTIVATE");
break;
*/
default:
return NS_OK;
}
return NS_OK;
}
} } }
#endif // ACCESSIBILITY