зеркало из https://github.com/mozilla/gecko-dev.git
141 строка
4.3 KiB
C++
141 строка
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=2:tabstop=2:
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*/
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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 "ApplicationAccessible.h"
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#include "nsAccessibilityService.h"
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#include "nsAccUtils.h"
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#include "Relation.h"
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#include "Role.h"
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#include "States.h"
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#include "nsIComponentManager.h"
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#include "nsIWindowMediator.h"
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#include "nsServiceManagerUtils.h"
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#include "mozilla/Services.h"
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#include "nsGlobalWindow.h"
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#include "nsIStringBundle.h"
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using namespace mozilla::a11y;
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ApplicationAccessible::ApplicationAccessible()
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: AccessibleWrap(nullptr, nullptr) {
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mType = eApplicationType;
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mAppInfo = do_GetService("@mozilla.org/xre/app-info;1");
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MOZ_ASSERT(mAppInfo, "no application info");
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsIAccessible
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ENameValueFlag ApplicationAccessible::Name(nsString& aName) const {
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aName.Truncate();
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nsCOMPtr<nsIStringBundleService> bundleService =
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mozilla::services::GetStringBundleService();
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NS_ASSERTION(bundleService, "String bundle service must be present!");
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if (!bundleService) return eNameOK;
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nsCOMPtr<nsIStringBundle> bundle;
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nsresult rv = bundleService->CreateBundle(
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"chrome://branding/locale/brand.properties", getter_AddRefs(bundle));
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if (NS_FAILED(rv)) return eNameOK;
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nsAutoString appName;
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rv = bundle->GetStringFromName("brandShortName", appName);
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if (NS_FAILED(rv) || appName.IsEmpty()) {
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NS_WARNING("brandShortName not found, using default app name");
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appName.AssignLiteral("Gecko based application");
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}
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aName.Assign(appName);
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return eNameOK;
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}
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void ApplicationAccessible::Description(nsString& aDescription) {
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aDescription.Truncate();
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}
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void ApplicationAccessible::Value(nsString& aValue) const { aValue.Truncate(); }
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uint64_t ApplicationAccessible::State() {
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return IsDefunct() ? states::DEFUNCT : 0;
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}
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already_AddRefed<nsIPersistentProperties>
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ApplicationAccessible::NativeAttributes() {
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return nullptr;
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}
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GroupPos ApplicationAccessible::GroupPosition() { return GroupPos(); }
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Accessible* ApplicationAccessible::ChildAtPoint(
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int32_t aX, int32_t aY, EWhichChildAtPoint aWhichChild) {
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return nullptr;
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}
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Accessible* ApplicationAccessible::FocusedChild() {
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Accessible* focus = FocusMgr()->FocusedAccessible();
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if (focus && focus->Parent() == this) return focus;
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return nullptr;
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}
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Relation ApplicationAccessible::RelationByType(
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RelationType aRelationType) const {
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return Relation();
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}
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nsIntRect ApplicationAccessible::Bounds() const { return nsIntRect(); }
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nsRect ApplicationAccessible::BoundsInAppUnits() const { return nsRect(); }
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////////////////////////////////////////////////////////////////////////////////
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// Accessible public methods
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void ApplicationAccessible::Shutdown() { mAppInfo = nullptr; }
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void ApplicationAccessible::ApplyARIAState(uint64_t* aState) const {}
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role ApplicationAccessible::NativeRole() const { return roles::APP_ROOT; }
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uint64_t ApplicationAccessible::NativeState() const { return 0; }
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KeyBinding ApplicationAccessible::AccessKey() const { return KeyBinding(); }
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void ApplicationAccessible::Init() {
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// Basically children are kept updated by Append/RemoveChild method calls.
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// However if there are open windows before accessibility was started
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// then we need to make sure root accessibles for open windows are created so
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// that all root accessibles are stored in application accessible children
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// array.
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nsGlobalWindowOuter::OuterWindowByIdTable* windowsById =
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nsGlobalWindowOuter::GetWindowsTable();
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if (!windowsById) {
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return;
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}
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for (auto iter = windowsById->Iter(); !iter.Done(); iter.Next()) {
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nsGlobalWindowOuter* window = iter.Data();
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if (window->GetDocShell() && window->IsRootOuterWindow()) {
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if (RefPtr<dom::Document> docNode = window->GetExtantDoc()) {
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GetAccService()->GetDocAccessible(docNode); // ensure creation
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}
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}
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}
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}
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Accessible* ApplicationAccessible::GetSiblingAtOffset(int32_t aOffset,
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nsresult* aError) const {
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if (aError) *aError = NS_OK; // fail peacefully
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return nullptr;
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}
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