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Diffstat (limited to 'accessible/xul/XULTabAccessible.cpp')
| -rw-r--r-- | accessible/xul/XULTabAccessible.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/accessible/xul/XULTabAccessible.cpp b/accessible/xul/XULTabAccessible.cpp new file mode 100644 index 000000000..e525cf36d --- /dev/null +++ b/accessible/xul/XULTabAccessible.cpp @@ -0,0 +1,209 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "XULTabAccessible.h" + +#include "nsAccUtils.h" +#include "Relation.h" +#include "Role.h" +#include "States.h" + +// NOTE: alphabetically ordered +#include "nsIDocument.h" +#include "nsIDOMXULSelectCntrlEl.h" +#include "nsIDOMXULSelectCntrlItemEl.h" +#include "nsIDOMXULRelatedElement.h" + +using namespace mozilla::a11y; + +//////////////////////////////////////////////////////////////////////////////// +// XULTabAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULTabAccessible:: + XULTabAccessible(nsIContent* aContent, DocAccessible* aDoc) : + AccessibleWrap(aContent, aDoc) +{ +} + +//////////////////////////////////////////////////////////////////////////////// +// XULTabAccessible: Accessible + +uint8_t +XULTabAccessible::ActionCount() +{ + return 1; +} + +void +XULTabAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) +{ + if (aIndex == eAction_Switch) + aName.AssignLiteral("switch"); +} + +bool +XULTabAccessible::DoAction(uint8_t index) +{ + if (index == eAction_Switch) { + nsCOMPtr<nsIDOMXULElement> tab(do_QueryInterface(mContent)); + if (tab) { + tab->Click(); + return true; + } + } + return false; +} + +//////////////////////////////////////////////////////////////////////////////// +// XULTabAccessible: Accessible + +role +XULTabAccessible::NativeRole() +{ + return roles::PAGETAB; +} + +uint64_t +XULTabAccessible::NativeState() +{ + // Possible states: focused, focusable, unavailable(disabled), offscreen. + + // get focus and disable status from base class + uint64_t state = AccessibleWrap::NativeState(); + + // Check whether the tab is selected and/or pinned + nsCOMPtr<nsIDOMXULSelectControlItemElement> tab(do_QueryInterface(mContent)); + if (tab) { + bool selected = false; + if (NS_SUCCEEDED(tab->GetSelected(&selected)) && selected) + state |= states::SELECTED; + + if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::pinned, + nsGkAtoms::_true, eCaseMatters)) + state |= states::PINNED; + + } + + return state; +} + +uint64_t +XULTabAccessible::NativeInteractiveState() const +{ + uint64_t state = Accessible::NativeInteractiveState(); + return (state & states::UNAVAILABLE) ? state : state | states::SELECTABLE; +} + +Relation +XULTabAccessible::RelationByType(RelationType aType) +{ + Relation rel = AccessibleWrap::RelationByType(aType); + if (aType != RelationType::LABEL_FOR) + return rel; + + // Expose 'LABEL_FOR' relation on tab accessible for tabpanel accessible. + nsCOMPtr<nsIDOMXULRelatedElement> tabsElm = + do_QueryInterface(mContent->GetParent()); + if (!tabsElm) + return rel; + + nsCOMPtr<nsIDOMNode> domNode(DOMNode()); + nsCOMPtr<nsIDOMNode> tabpanelNode; + tabsElm->GetRelatedElement(domNode, getter_AddRefs(tabpanelNode)); + if (!tabpanelNode) + return rel; + + nsCOMPtr<nsIContent> tabpanelContent(do_QueryInterface(tabpanelNode)); + rel.AppendTarget(mDoc, tabpanelContent); + return rel; +} + + +//////////////////////////////////////////////////////////////////////////////// +// XULTabsAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULTabsAccessible:: + XULTabsAccessible(nsIContent* aContent, DocAccessible* aDoc) : + XULSelectControlAccessible(aContent, aDoc) +{ +} + +role +XULTabsAccessible::NativeRole() +{ + return roles::PAGETABLIST; +} + +uint8_t +XULTabsAccessible::ActionCount() +{ + return 0; +} + +void +XULTabsAccessible::Value(nsString& aValue) +{ + aValue.Truncate(); +} + +ENameValueFlag +XULTabsAccessible::NativeName(nsString& aName) +{ + // no name + return eNameOK; +} + + +//////////////////////////////////////////////////////////////////////////////// +// XULTabpanelsAccessible +//////////////////////////////////////////////////////////////////////////////// + +role +XULTabpanelsAccessible::NativeRole() +{ + return roles::PANE; +} + +//////////////////////////////////////////////////////////////////////////////// +// XULTabpanelAccessible +//////////////////////////////////////////////////////////////////////////////// + +XULTabpanelAccessible:: + XULTabpanelAccessible(nsIContent* aContent, DocAccessible* aDoc) : + AccessibleWrap(aContent, aDoc) +{ +} + +role +XULTabpanelAccessible::NativeRole() +{ + return roles::PROPERTYPAGE; +} + +Relation +XULTabpanelAccessible::RelationByType(RelationType aType) +{ + Relation rel = AccessibleWrap::RelationByType(aType); + if (aType != RelationType::LABELLED_BY) + return rel; + + // Expose 'LABELLED_BY' relation on tabpanel accessible for tab accessible. + nsCOMPtr<nsIDOMXULRelatedElement> tabpanelsElm = + do_QueryInterface(mContent->GetParent()); + if (!tabpanelsElm) + return rel; + + nsCOMPtr<nsIDOMNode> domNode(DOMNode()); + nsCOMPtr<nsIDOMNode> tabNode; + tabpanelsElm->GetRelatedElement(domNode, getter_AddRefs(tabNode)); + if (!tabNode) + return rel; + + nsCOMPtr<nsIContent> tabContent(do_QueryInterface(tabNode)); + rel.AppendTarget(mDoc, tabContent); + return rel; +} |