michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "BaseAccessibles.h"
michael@0: 
michael@0: #include "Accessible-inl.h"
michael@0: #include "HyperTextAccessibleWrap.h"
michael@0: #include "nsAccessibilityService.h"
michael@0: #include "nsAccUtils.h"
michael@0: #include "nsCoreUtils.h"
michael@0: #include "Role.h"
michael@0: #include "States.h"
michael@0: #include "nsIURI.h"
michael@0: 
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LeafAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: LeafAccessible::
michael@0:   LeafAccessible(nsIContent* aContent, DocAccessible* aDoc) :
michael@0:   AccessibleWrap(aContent, aDoc)
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS_INHERITED0(LeafAccessible, Accessible)
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LeafAccessible: Accessible public
michael@0: 
michael@0: Accessible*
michael@0: LeafAccessible::ChildAtPoint(int32_t aX, int32_t aY,
michael@0:                              EWhichChildAtPoint aWhichChild)
michael@0: {
michael@0:   // Don't walk into leaf accessibles.
michael@0:   return this;
michael@0: }
michael@0: 
michael@0: bool
michael@0: LeafAccessible::InsertChildAt(uint32_t aIndex, Accessible* aChild)
michael@0: {
michael@0:   NS_NOTREACHED("InsertChildAt called on leaf accessible!");
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: bool
michael@0: LeafAccessible::RemoveChild(Accessible* aChild)
michael@0: {
michael@0:   NS_NOTREACHED("RemoveChild called on leaf accessible!");
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LeafAccessible: Accessible private
michael@0: 
michael@0: void
michael@0: LeafAccessible::CacheChildren()
michael@0: {
michael@0:   // No children for leaf accessible.
michael@0: }
michael@0: 
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LinkableAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: LinkableAccessible::
michael@0:   LinkableAccessible(nsIContent* aContent, DocAccessible* aDoc) :
michael@0:   AccessibleWrap(aContent, aDoc),
michael@0:   mActionAcc(nullptr),
michael@0:   mIsLink(false),
michael@0:   mIsOnclick(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS_INHERITED0(LinkableAccessible, AccessibleWrap)
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LinkableAccessible. nsIAccessible
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: LinkableAccessible::TakeFocus()
michael@0: {
michael@0:   return mActionAcc ? mActionAcc->TakeFocus() : AccessibleWrap::TakeFocus();
michael@0: }
michael@0: 
michael@0: uint64_t
michael@0: LinkableAccessible::NativeLinkState() const
michael@0: {
michael@0:   if (mIsLink)
michael@0:     return states::LINKED | (mActionAcc->LinkState() & states::TRAVERSED);
michael@0: 
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: void
michael@0: LinkableAccessible::Value(nsString& aValue)
michael@0: {
michael@0:   aValue.Truncate();
michael@0: 
michael@0:   Accessible::Value(aValue);
michael@0:   if (!aValue.IsEmpty())
michael@0:     return;
michael@0: 
michael@0:   if (aValue.IsEmpty() && mIsLink)
michael@0:     mActionAcc->Value(aValue);
michael@0: }
michael@0: 
michael@0: 
michael@0: uint8_t
michael@0: LinkableAccessible::ActionCount()
michael@0: {
michael@0:   return (mIsOnclick || mIsLink) ? 1 : 0;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: LinkableAccessible::GetActionName(uint8_t aIndex, nsAString& aName)
michael@0: {
michael@0:   aName.Truncate();
michael@0: 
michael@0:   // Action 0 (default action): Jump to link
michael@0:   if (aIndex == eAction_Jump) {
michael@0:     if (mIsLink) {
michael@0:       aName.AssignLiteral("jump");
michael@0:       return NS_OK;
michael@0:     }
michael@0:     else if (mIsOnclick) {
michael@0:       aName.AssignLiteral("click");
michael@0:       return NS_OK;
michael@0:     }
michael@0:     return NS_ERROR_NOT_IMPLEMENTED;
michael@0:   }
michael@0:   return NS_ERROR_INVALID_ARG;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: LinkableAccessible::DoAction(uint8_t aIndex)
michael@0: {
michael@0:   if (aIndex != eAction_Jump)
michael@0:     return NS_ERROR_INVALID_ARG;
michael@0: 
michael@0:   return mActionAcc ? mActionAcc->DoAction(aIndex) :
michael@0:     AccessibleWrap::DoAction(aIndex);
michael@0: }
michael@0: 
michael@0: KeyBinding
michael@0: LinkableAccessible::AccessKey() const
michael@0: {
michael@0:   return mActionAcc ?
michael@0:     mActionAcc->AccessKey() : Accessible::AccessKey();
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LinkableAccessible. Accessible
michael@0: 
michael@0: void
michael@0: LinkableAccessible::Shutdown()
michael@0: {
michael@0:   mIsLink = false;
michael@0:   mIsOnclick = false;
michael@0:   mActionAcc = nullptr;
michael@0:   AccessibleWrap::Shutdown();
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LinkableAccessible: HyperLinkAccessible
michael@0: 
michael@0: already_AddRefed<nsIURI>
michael@0: LinkableAccessible::AnchorURIAt(uint32_t aAnchorIndex)
michael@0: {
michael@0:   if (mIsLink) {
michael@0:     NS_ASSERTION(mActionAcc->IsLink(),
michael@0:                  "nsIAccessibleHyperLink isn't implemented.");
michael@0: 
michael@0:     if (mActionAcc->IsLink())
michael@0:       return mActionAcc->AnchorURIAt(aAnchorIndex);
michael@0:   }
michael@0: 
michael@0:   return nullptr;
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // LinkableAccessible: Accessible protected
michael@0: 
michael@0: void
michael@0: LinkableAccessible::BindToParent(Accessible* aParent,
michael@0:                                  uint32_t aIndexInParent)
michael@0: {
michael@0:   AccessibleWrap::BindToParent(aParent, aIndexInParent);
michael@0: 
michael@0:   // Cache action content.
michael@0:   mActionAcc = nullptr;
michael@0:   mIsLink = false;
michael@0:   mIsOnclick = false;
michael@0: 
michael@0:   if (nsCoreUtils::HasClickListener(mContent)) {
michael@0:     mIsOnclick = true;
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   // XXX: The logic looks broken since the click listener may be registered
michael@0:   // on non accessible node in parent chain but this node is skipped when tree
michael@0:   // is traversed.
michael@0:   Accessible* walkUpAcc = this;
michael@0:   while ((walkUpAcc = walkUpAcc->Parent()) && !walkUpAcc->IsDoc()) {
michael@0:     if (walkUpAcc->LinkState() & states::LINKED) {
michael@0:       mIsLink = true;
michael@0:       mActionAcc = walkUpAcc;
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     if (nsCoreUtils::HasClickListener(walkUpAcc->GetContent())) {
michael@0:       mActionAcc = walkUpAcc;
michael@0:       mIsOnclick = true;
michael@0:       return;
michael@0:     }
michael@0:   }
michael@0: }
michael@0: 
michael@0: void
michael@0: LinkableAccessible::UnbindFromParent()
michael@0: {
michael@0:   mActionAcc = nullptr;
michael@0:   mIsLink = false;
michael@0:   mIsOnclick = false;
michael@0: 
michael@0:   AccessibleWrap::UnbindFromParent();
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // EnumRoleAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: EnumRoleAccessible::
michael@0:   EnumRoleAccessible(nsIContent* aNode, DocAccessible* aDoc, roles::Role aRole) :
michael@0:   AccessibleWrap(aNode, aDoc), mRole(aRole)
michael@0: {
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS_INHERITED0(EnumRoleAccessible, Accessible)
michael@0: 
michael@0: role
michael@0: EnumRoleAccessible::NativeRole()
michael@0: {
michael@0:   return mRole;
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // DummyAccessible
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: uint64_t
michael@0: DummyAccessible::NativeState()
michael@0: {
michael@0:   return 0;
michael@0: }
michael@0: uint64_t
michael@0: DummyAccessible::NativeInteractiveState() const
michael@0: {
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: uint64_t
michael@0: DummyAccessible::NativeLinkState() const
michael@0: {
michael@0:   return 0;
michael@0: }
michael@0: 
michael@0: bool
michael@0: DummyAccessible::NativelyUnavailable() const
michael@0: {
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: void
michael@0: DummyAccessible::ApplyARIAState(uint64_t* aState) const
michael@0: {
michael@0: }