зеркало из https://github.com/mozilla/gecko-dev.git
196 строки
5.0 KiB
C++
196 строки
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "HTMLListAccessible.h"
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#include "DocAccessible.h"
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#include "nsAccUtils.h"
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#include "Role.h"
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#include "States.h"
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#include "nsBlockFrame.h"
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#include "nsBulletFrame.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// HTMLListAccessible
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////////////////////////////////////////////////////////////////////////////////
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role
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HTMLListAccessible::NativeRole()
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{
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a11y::role r = GetAccService()->MarkupRole(mContent);
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return r != roles::NOTHING ? r : roles::LIST;
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}
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uint64_t
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HTMLListAccessible::NativeState()
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{
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return HyperTextAccessibleWrap::NativeState() | states::READONLY;
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLLIAccessible
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////////////////////////////////////////////////////////////////////////////////
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HTMLLIAccessible::
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HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc) :
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HyperTextAccessibleWrap(aContent, aDoc), mBullet(nullptr)
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{
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mType = eHTMLLiType;
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nsBlockFrame* blockFrame = do_QueryFrame(GetFrame());
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if (blockFrame && blockFrame->HasBullet()) {
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mBullet = new HTMLListBulletAccessible(mContent, mDoc);
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Document()->BindToDocument(mBullet, nullptr);
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AppendChild(mBullet);
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}
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}
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void
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HTMLLIAccessible::Shutdown()
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{
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mBullet = nullptr;
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HyperTextAccessibleWrap::Shutdown();
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}
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role
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HTMLLIAccessible::NativeRole()
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{
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a11y::role r = GetAccService()->MarkupRole(mContent);
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return r != roles::NOTHING ? r : roles::LISTITEM;
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}
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uint64_t
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HTMLLIAccessible::NativeState()
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{
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return HyperTextAccessibleWrap::NativeState() | states::READONLY;
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}
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nsIntRect
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HTMLLIAccessible::Bounds() const
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{
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nsIntRect rect = AccessibleWrap::Bounds();
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if (rect.IsEmpty() || !mBullet || mBullet->IsInside())
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return rect;
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nsIntRect bulletRect = mBullet->Bounds();
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// Move x coordinate of list item over to cover bullet as well
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rect.SetLeftEdge(bulletRect.X());
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return rect;
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}
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bool
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HTMLLIAccessible::InsertChildAt(uint32_t aIndex, Accessible* aChild)
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{
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// Adjust index if there's a bullet.
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if (mBullet && aIndex == 0 && aChild != mBullet) {
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return HyperTextAccessible::InsertChildAt(aIndex + 1, aChild);
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}
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return HyperTextAccessible::InsertChildAt(aIndex, aChild);
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLLIAccessible: public
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void
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HTMLLIAccessible::UpdateBullet(bool aHasBullet)
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{
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if (aHasBullet == !!mBullet) {
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NS_NOTREACHED("Bullet and accessible are in sync already!");
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return;
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}
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TreeMutation mt(this);
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if (aHasBullet) {
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mBullet = new HTMLListBulletAccessible(mContent, mDoc);
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mDoc->BindToDocument(mBullet, nullptr);
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InsertChildAt(0, mBullet);
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mt.AfterInsertion(mBullet);
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}
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else {
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mt.BeforeRemoval(mBullet);
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RemoveChild(mBullet);
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mBullet = nullptr;
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}
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mt.Done();
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLListBulletAccessible
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////////////////////////////////////////////////////////////////////////////////
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HTMLListBulletAccessible::
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HTMLListBulletAccessible(nsIContent* aContent, DocAccessible* aDoc) :
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LeafAccessible(aContent, aDoc)
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{
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mGenericTypes |= eText;
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mStateFlags |= eSharedNode;
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLListBulletAccessible: Accessible
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nsIFrame*
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HTMLListBulletAccessible::GetFrame() const
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{
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nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
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return blockFrame ? blockFrame->GetBullet() : nullptr;
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}
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ENameValueFlag
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HTMLListBulletAccessible::Name(nsString &aName)
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{
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aName.Truncate();
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// Native anonymous content, ARIA can't be used. Get list bullet text.
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nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
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if (blockFrame) {
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blockFrame->GetSpokenBulletText(aName);
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}
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return eNameOK;
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}
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role
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HTMLListBulletAccessible::NativeRole()
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{
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return roles::STATICTEXT;
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}
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uint64_t
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HTMLListBulletAccessible::NativeState()
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{
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return LeafAccessible::NativeState() | states::READONLY;
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}
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void
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HTMLListBulletAccessible::AppendTextTo(nsAString& aText, uint32_t aStartOffset,
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uint32_t aLength)
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{
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nsAutoString bulletText;
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nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
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if (blockFrame)
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blockFrame->GetSpokenBulletText(bulletText);
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aText.Append(Substring(bulletText, aStartOffset, aLength));
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}
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////////////////////////////////////////////////////////////////////////////////
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// HTMLListBulletAccessible: public
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bool
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HTMLListBulletAccessible::IsInside() const
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{
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nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
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return blockFrame ? blockFrame->HasInsideBullet() : false;
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}
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