1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/html/HTMLListAccessible.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,209 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.8 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "HTMLListAccessible.h"
1.11 +
1.12 +#include "DocAccessible.h"
1.13 +#include "nsAccUtils.h"
1.14 +#include "Role.h"
1.15 +#include "States.h"
1.16 +
1.17 +#include "nsBlockFrame.h"
1.18 +#include "nsBulletFrame.h"
1.19 +
1.20 +using namespace mozilla;
1.21 +using namespace mozilla::a11y;
1.22 +
1.23 +////////////////////////////////////////////////////////////////////////////////
1.24 +// HTMLListAccessible
1.25 +////////////////////////////////////////////////////////////////////////////////
1.26 +
1.27 +NS_IMPL_ISUPPORTS_INHERITED0(HTMLListAccessible, HyperTextAccessible)
1.28 +
1.29 +role
1.30 +HTMLListAccessible::NativeRole()
1.31 +{
1.32 + if (mContent->Tag() == nsGkAtoms::dl)
1.33 + return roles::DEFINITION_LIST;
1.34 +
1.35 + return roles::LIST;
1.36 +}
1.37 +
1.38 +uint64_t
1.39 +HTMLListAccessible::NativeState()
1.40 +{
1.41 + return HyperTextAccessibleWrap::NativeState() | states::READONLY;
1.42 +}
1.43 +
1.44 +
1.45 +////////////////////////////////////////////////////////////////////////////////
1.46 +// HTMLLIAccessible
1.47 +////////////////////////////////////////////////////////////////////////////////
1.48 +
1.49 +HTMLLIAccessible::
1.50 + HTMLLIAccessible(nsIContent* aContent, DocAccessible* aDoc) :
1.51 + HyperTextAccessibleWrap(aContent, aDoc), mBullet(nullptr)
1.52 +{
1.53 + mType = eHTMLLiType;
1.54 +
1.55 + nsBlockFrame* blockFrame = do_QueryFrame(GetFrame());
1.56 + if (blockFrame && blockFrame->HasBullet()) {
1.57 + mBullet = new HTMLListBulletAccessible(mContent, mDoc);
1.58 + Document()->BindToDocument(mBullet, nullptr);
1.59 + }
1.60 +}
1.61 +
1.62 +NS_IMPL_ISUPPORTS_INHERITED0(HTMLLIAccessible, HyperTextAccessible)
1.63 +
1.64 +void
1.65 +HTMLLIAccessible::Shutdown()
1.66 +{
1.67 + mBullet = nullptr;
1.68 +
1.69 + HyperTextAccessibleWrap::Shutdown();
1.70 +}
1.71 +
1.72 +role
1.73 +HTMLLIAccessible::NativeRole()
1.74 +{
1.75 + if (mContent->Tag() == nsGkAtoms::dt)
1.76 + return roles::TERM;
1.77 +
1.78 + return roles::LISTITEM;
1.79 +}
1.80 +
1.81 +uint64_t
1.82 +HTMLLIAccessible::NativeState()
1.83 +{
1.84 + return HyperTextAccessibleWrap::NativeState() | states::READONLY;
1.85 +}
1.86 +
1.87 +NS_IMETHODIMP
1.88 +HTMLLIAccessible::GetBounds(int32_t* aX, int32_t* aY,
1.89 + int32_t* aWidth, int32_t* aHeight)
1.90 +{
1.91 + nsresult rv = AccessibleWrap::GetBounds(aX, aY, aWidth, aHeight);
1.92 + if (NS_FAILED(rv) || !mBullet || mBullet->IsInside())
1.93 + return rv;
1.94 +
1.95 + int32_t bulletX = 0, bulletY = 0, bulletWidth = 0, bulletHeight = 0;
1.96 + rv = mBullet->GetBounds(&bulletX, &bulletY, &bulletWidth, &bulletHeight);
1.97 + NS_ENSURE_SUCCESS(rv, rv);
1.98 +
1.99 + *aWidth += *aX - bulletX;
1.100 + *aX = bulletX; // Move x coordinate of list item over to cover bullet as well
1.101 + return NS_OK;
1.102 +}
1.103 +
1.104 +////////////////////////////////////////////////////////////////////////////////
1.105 +// HTMLLIAccessible: public
1.106 +
1.107 +void
1.108 +HTMLLIAccessible::UpdateBullet(bool aHasBullet)
1.109 +{
1.110 + if (aHasBullet == !!mBullet) {
1.111 + NS_NOTREACHED("Bullet and accessible are in sync already!");
1.112 + return;
1.113 + }
1.114 +
1.115 + DocAccessible* document = Document();
1.116 + if (aHasBullet) {
1.117 + mBullet = new HTMLListBulletAccessible(mContent, mDoc);
1.118 + document->BindToDocument(mBullet, nullptr);
1.119 + InsertChildAt(0, mBullet);
1.120 + } else {
1.121 + RemoveChild(mBullet);
1.122 + document->UnbindFromDocument(mBullet);
1.123 + mBullet = nullptr;
1.124 + }
1.125 +
1.126 + // XXXtodo: fire show/hide and reorder events. That's hard to make it
1.127 + // right now because coalescence happens by DOM node.
1.128 +}
1.129 +
1.130 +////////////////////////////////////////////////////////////////////////////////
1.131 +// HTMLLIAccessible: Accessible protected
1.132 +
1.133 +void
1.134 +HTMLLIAccessible::CacheChildren()
1.135 +{
1.136 + if (mBullet)
1.137 + AppendChild(mBullet);
1.138 +
1.139 + // Cache children from subtree.
1.140 + AccessibleWrap::CacheChildren();
1.141 +}
1.142 +
1.143 +////////////////////////////////////////////////////////////////////////////////
1.144 +// HTMLListBulletAccessible
1.145 +////////////////////////////////////////////////////////////////////////////////
1.146 +HTMLListBulletAccessible::
1.147 + HTMLListBulletAccessible(nsIContent* aContent, DocAccessible* aDoc) :
1.148 + LeafAccessible(aContent, aDoc)
1.149 +{
1.150 + mStateFlags |= eSharedNode;
1.151 +}
1.152 +
1.153 +////////////////////////////////////////////////////////////////////////////////
1.154 +// HTMLListBulletAccessible: Accessible
1.155 +
1.156 +nsIFrame*
1.157 +HTMLListBulletAccessible::GetFrame() const
1.158 +{
1.159 + nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
1.160 + return blockFrame ? blockFrame->GetBullet() : nullptr;
1.161 +}
1.162 +
1.163 +ENameValueFlag
1.164 +HTMLListBulletAccessible::Name(nsString &aName)
1.165 +{
1.166 + aName.Truncate();
1.167 +
1.168 + // Native anonymous content, ARIA can't be used. Get list bullet text.
1.169 + nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
1.170 + if (blockFrame) {
1.171 + blockFrame->GetBulletText(aName);
1.172 +
1.173 + // Append space otherwise bullets are jammed up against list text.
1.174 + aName.Append(' ');
1.175 + }
1.176 +
1.177 + return eNameOK;
1.178 +}
1.179 +
1.180 +role
1.181 +HTMLListBulletAccessible::NativeRole()
1.182 +{
1.183 + return roles::STATICTEXT;
1.184 +}
1.185 +
1.186 +uint64_t
1.187 +HTMLListBulletAccessible::NativeState()
1.188 +{
1.189 + return LeafAccessible::NativeState() | states::READONLY;
1.190 +}
1.191 +
1.192 +void
1.193 +HTMLListBulletAccessible::AppendTextTo(nsAString& aText, uint32_t aStartOffset,
1.194 + uint32_t aLength)
1.195 +{
1.196 + nsAutoString bulletText;
1.197 + nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
1.198 + if (blockFrame)
1.199 + blockFrame->GetBulletText(bulletText);
1.200 +
1.201 + aText.Append(Substring(bulletText, aStartOffset, aLength));
1.202 +}
1.203 +
1.204 +////////////////////////////////////////////////////////////////////////////////
1.205 +// HTMLListBulletAccessible: public
1.206 +
1.207 +bool
1.208 +HTMLListBulletAccessible::IsInside() const
1.209 +{
1.210 + nsBlockFrame* blockFrame = do_QueryFrame(mContent->GetPrimaryFrame());
1.211 + return blockFrame ? blockFrame->HasInsideBullet() : false;
1.212 +}
