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110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "HTMLWin32ObjectAccessible.h"
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#include "Role.h"
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#include "States.h"
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// HTMLWin32ObjectOwnerAccessible
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////////////////////////////////////////////////////////////////////////////////
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HTMLWin32ObjectOwnerAccessible::
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HTMLWin32ObjectOwnerAccessible(nsIContent* aContent,
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DocAccessible* aDoc, void* aHwnd) :
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AccessibleWrap(aContent, aDoc), mHwnd(aHwnd)
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{
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mStateFlags |= eNoKidsFromDOM;
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// Our only child is a HTMLWin32ObjectAccessible object.
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if (mHwnd) {
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mNativeAccessible = new HTMLWin32ObjectAccessible(mHwnd, aDoc);
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AppendChild(mNativeAccessible);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLWin32ObjectOwnerAccessible: Accessible implementation
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void
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HTMLWin32ObjectOwnerAccessible::Shutdown()
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{
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AccessibleWrap::Shutdown();
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mNativeAccessible = nullptr;
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}
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role
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HTMLWin32ObjectOwnerAccessible::NativeRole() const
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{
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return roles::EMBEDDED_OBJECT;
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}
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bool
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HTMLWin32ObjectOwnerAccessible::NativelyUnavailable() const
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{
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// XXX: No HWND means this is windowless plugin which is not accessible in
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// the meantime.
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return !mHwnd;
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLWin32ObjectAccessible
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////////////////////////////////////////////////////////////////////////////////
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HTMLWin32ObjectAccessible::HTMLWin32ObjectAccessible(void* aHwnd,
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DocAccessible* aDoc) :
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DummyAccessible(aDoc)
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{
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mHwnd = aHwnd;
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if (mHwnd) {
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#if defined(MOZ_CONTENT_SANDBOX)
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if (XRE_IsContentProcess()) {
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DocAccessibleChild* ipcDoc = aDoc->IPCDoc();
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MOZ_ASSERT(ipcDoc);
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if (!ipcDoc) {
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return;
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}
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IAccessibleHolder proxyHolder;
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if (!ipcDoc->SendGetWindowedPluginIAccessible(
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reinterpret_cast<uintptr_t>(mHwnd), &proxyHolder)) {
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return;
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}
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mCOMProxy.reset(proxyHolder.Release());
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return;
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}
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#endif
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// The plugin is not windowless. In this situation we use
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// use its inner child owned by the plugin so that we don't get
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// in an infinite loop, where the WM_GETOBJECT's get forwarded
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// back to us and create another HTMLWin32ObjectAccessible
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mHwnd = ::GetWindow((HWND)aHwnd, GW_CHILD);
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}
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}
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void
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HTMLWin32ObjectAccessible::GetNativeInterface(void** aNativeAccessible)
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{
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#if defined(MOZ_CONTENT_SANDBOX)
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if (XRE_IsContentProcess()) {
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RefPtr<IAccessible> addRefed = mCOMProxy.get();
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addRefed.forget(aNativeAccessible);
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return;
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}
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#endif
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if (mHwnd) {
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::AccessibleObjectFromWindow(static_cast<HWND>(mHwnd),
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OBJID_WINDOW, IID_IAccessible,
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aNativeAccessible);
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}
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}
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