1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/windows/msaa/HTMLWin32ObjectAccessible.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "HTMLWin32ObjectAccessible.h"
1.10 +
1.11 +#include "Role.h"
1.12 +#include "States.h"
1.13 +
1.14 +using namespace mozilla::a11y;
1.15 +
1.16 +////////////////////////////////////////////////////////////////////////////////
1.17 +// HTMLWin32ObjectOwnerAccessible
1.18 +////////////////////////////////////////////////////////////////////////////////
1.19 +
1.20 +HTMLWin32ObjectOwnerAccessible::
1.21 + HTMLWin32ObjectOwnerAccessible(nsIContent* aContent,
1.22 + DocAccessible* aDoc, void* aHwnd) :
1.23 + AccessibleWrap(aContent, aDoc), mHwnd(aHwnd)
1.24 +{
1.25 + // Our only child is a HTMLWin32ObjectAccessible object.
1.26 + if (mHwnd)
1.27 + mNativeAccessible = new HTMLWin32ObjectAccessible(mHwnd);
1.28 +}
1.29 +
1.30 +////////////////////////////////////////////////////////////////////////////////
1.31 +// HTMLWin32ObjectOwnerAccessible: Accessible implementation
1.32 +
1.33 +void
1.34 +HTMLWin32ObjectOwnerAccessible::Shutdown()
1.35 +{
1.36 + AccessibleWrap::Shutdown();
1.37 + mNativeAccessible = nullptr;
1.38 +}
1.39 +
1.40 +role
1.41 +HTMLWin32ObjectOwnerAccessible::NativeRole()
1.42 +{
1.43 + return roles::EMBEDDED_OBJECT;
1.44 +}
1.45 +
1.46 +bool
1.47 +HTMLWin32ObjectOwnerAccessible::NativelyUnavailable() const
1.48 +{
1.49 + // XXX: No HWND means this is windowless plugin which is not accessible in
1.50 + // the meantime.
1.51 + return !mHwnd;
1.52 +}
1.53 +
1.54 +////////////////////////////////////////////////////////////////////////////////
1.55 +// HTMLWin32ObjectOwnerAccessible: Accessible protected implementation
1.56 +
1.57 +void
1.58 +HTMLWin32ObjectOwnerAccessible::CacheChildren()
1.59 +{
1.60 + if (mNativeAccessible)
1.61 + AppendChild(mNativeAccessible);
1.62 +}
1.63 +
1.64 +
1.65 +////////////////////////////////////////////////////////////////////////////////
1.66 +// HTMLWin32ObjectAccessible
1.67 +////////////////////////////////////////////////////////////////////////////////
1.68 +
1.69 +HTMLWin32ObjectAccessible::HTMLWin32ObjectAccessible(void* aHwnd) :
1.70 + DummyAccessible()
1.71 +{
1.72 + mHwnd = aHwnd;
1.73 + if (mHwnd) {
1.74 + // The plugin is not windowless. In this situation we use
1.75 + // use its inner child owned by the plugin so that we don't get
1.76 + // in an infinite loop, where the WM_GETOBJECT's get forwarded
1.77 + // back to us and create another HTMLWin32ObjectAccessible
1.78 + HWND childWnd = ::GetWindow((HWND)aHwnd, GW_CHILD);
1.79 + if (childWnd) {
1.80 + mHwnd = childWnd;
1.81 + }
1.82 + }
1.83 +}
1.84 +
1.85 +NS_IMETHODIMP
1.86 +HTMLWin32ObjectAccessible::GetNativeInterface(void** aNativeAccessible)
1.87 +{
1.88 + if (mHwnd) {
1.89 + ::AccessibleObjectFromWindow(static_cast<HWND>(mHwnd),
1.90 + OBJID_WINDOW, IID_IAccessible,
1.91 + aNativeAccessible);
1.92 + }
1.93 + return NS_OK;
1.94 +}
1.95 +
