Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

633 lines
16 KiB

/* -*- 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 "XULFormControlAccessible.h"
#include "Accessible-inl.h"
#include "HTMLFormControlAccessible.h"
#include "nsAccUtils.h"
#include "nsCoreUtils.h"
#include "DocAccessible.h"
#include "nsIAccessibleRelation.h"
#include "Relation.h"
#include "Role.h"
#include "States.h"
#include "TreeWalker.h"
#include "XULMenuAccessible.h"
#include "nsIDOMNSEditableElement.h"
#include "nsIDOMXULButtonElement.h"
#include "nsIDOMXULCheckboxElement.h"
#include "nsIDOMXULMenuListElement.h"
#include "nsIDOMXULSelectCntrlItemEl.h"
#include "nsIDOMXULTextboxElement.h"
#include "nsIEditor.h"
#include "nsIFrame.h"
#include "nsITextControlFrame.h"
#include "nsMenuPopupFrame.h"
#include "nsNameSpaceManager.h"
#include "mozilla/dom/Element.h"
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible
////////////////////////////////////////////////////////////////////////////////
XULButtonAccessible::
XULButtonAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
if (ContainsMenu()) {
mGenericTypes |= eMenuButton;
} else {
mGenericTypes |= eButton;
}
}
XULButtonAccessible::~XULButtonAccessible()
{
}
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible: nsISupports
NS_IMPL_ISUPPORTS_INHERITED0(XULButtonAccessible, Accessible)
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible: nsIAccessible
uint8_t
XULButtonAccessible::ActionCount()
{
return 1;
}
void
XULButtonAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
if (aIndex == eAction_Click)
aName.AssignLiteral("press");
}
bool
XULButtonAccessible::DoAction(uint8_t aIndex)
{
if (aIndex != 0)
return false;
DoCommand();
return true;
}
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible: Accessible
role
XULButtonAccessible::NativeRole()
{
return roles::PUSHBUTTON;
}
uint64_t
XULButtonAccessible::NativeState()
{
// Possible states: focused, focusable, unavailable(disabled).
// get focus and disable status from base class
uint64_t state = Accessible::NativeState();
// Buttons can be checked -- they simply appear pressed in rather than checked
nsCOMPtr<nsIDOMXULButtonElement> xulButtonElement(do_QueryInterface(mContent));
if (xulButtonElement) {
nsAutoString type;
xulButtonElement->GetType(type);
if (type.EqualsLiteral("checkbox") || type.EqualsLiteral("radio")) {
state |= states::CHECKABLE;
bool checked = false;
int32_t checkState = 0;
xulButtonElement->GetChecked(&checked);
if (checked) {
state |= states::PRESSED;
xulButtonElement->GetCheckState(&checkState);
if (checkState == nsIDOMXULButtonElement::CHECKSTATE_MIXED) {
state |= states::MIXED;
}
}
}
}
if (ContainsMenu())
state |= states::HASPOPUP;
if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::_default))
state |= states::DEFAULT;
return state;
}
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible: Widgets
bool
XULButtonAccessible::IsWidget() const
{
return true;
}
bool
XULButtonAccessible::IsActiveWidget() const
{
return FocusMgr()->HasDOMFocus(mContent);
}
bool
XULButtonAccessible::AreItemsOperable() const
{
if (IsMenuButton()) {
Accessible* menuPopup = mChildren.SafeElementAt(0, nullptr);
if (menuPopup) {
nsMenuPopupFrame* menuPopupFrame = do_QueryFrame(menuPopup->GetFrame());
return menuPopupFrame->IsOpen();
}
}
return false; // no items
}
Accessible*
XULButtonAccessible::ContainerWidget() const
{
if (IsMenuButton() && mParent && mParent->IsAutoComplete())
return mParent;
return nullptr;
}
bool
XULButtonAccessible::IsAcceptableChild(nsIContent* aEl) const
{
// In general XUL button has not accessible children. Nevertheless menu
// buttons can have button (@type="menu-button") and popup accessibles
// (@type="menu-button", @type="menu" or columnpicker.
// XXX: no children until the button is menu button. Probably it's not
// totally correct but in general AT wants to have leaf buttons.
nsAutoString role;
nsCoreUtils::XBLBindingRole(aEl, role);
// Get an accessible for menupopup or panel elements.
if (role.EqualsLiteral("xul:menupopup")) {
return true;
}
// Button type="menu-button" contains a real button. Get an accessible
// for it. Ignore dropmarker button which is placed as a last child.
if ((!role.EqualsLiteral("xul:button") &&
!role.EqualsLiteral("xul:toolbarbutton")) ||
aEl->IsXULElement(nsGkAtoms::dropMarker)) {
return false;
}
return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
nsGkAtoms::menuButton, eCaseMatters);
}
////////////////////////////////////////////////////////////////////////////////
// XULButtonAccessible protected
bool
XULButtonAccessible::ContainsMenu() const
{
static nsIContent::AttrValuesArray strings[] =
{&nsGkAtoms::menu, &nsGkAtoms::menuButton, nullptr};
return mContent->FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::type,
strings, eCaseMatters) >= 0;
}
////////////////////////////////////////////////////////////////////////////////
// XULDropmarkerAccessible
////////////////////////////////////////////////////////////////////////////////
XULDropmarkerAccessible::
XULDropmarkerAccessible(nsIContent* aContent, DocAccessible* aDoc) :
LeafAccessible(aContent, aDoc)
{
}
uint8_t
XULDropmarkerAccessible::ActionCount()
{
return 1;
}
bool
XULDropmarkerAccessible::DropmarkerOpen(bool aToggleOpen) const
{
bool isOpen = false;
nsIContent* parent = mContent->GetFlattenedTreeParent();
while (parent) {
nsCOMPtr<nsIDOMXULButtonElement> parentButtonElement =
do_QueryInterface(parent);
if (parentButtonElement) {
parentButtonElement->GetOpen(&isOpen);
if (aToggleOpen)
parentButtonElement->SetOpen(!isOpen);
return isOpen;
}
nsCOMPtr<nsIDOMXULMenuListElement> parentMenuListElement =
do_QueryInterface(parent);
if (parentMenuListElement) {
parentMenuListElement->GetOpen(&isOpen);
if (aToggleOpen)
parentMenuListElement->SetOpen(!isOpen);
return isOpen;
}
parent = parent->GetFlattenedTreeParent();
}
return isOpen;
}
void
XULDropmarkerAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
aName.Truncate();
if (aIndex == eAction_Click) {
if (DropmarkerOpen(false))
aName.AssignLiteral("close");
else
aName.AssignLiteral("open");
}
}
bool
XULDropmarkerAccessible::DoAction(uint8_t index)
{
if (index == eAction_Click) {
DropmarkerOpen(true); // Reverse the open attribute
return true;
}
return false;
}
role
XULDropmarkerAccessible::NativeRole()
{
return roles::PUSHBUTTON;
}
uint64_t
XULDropmarkerAccessible::NativeState()
{
return DropmarkerOpen(false) ? states::PRESSED : 0;
}
////////////////////////////////////////////////////////////////////////////////
// XULCheckboxAccessible
////////////////////////////////////////////////////////////////////////////////
XULCheckboxAccessible::
XULCheckboxAccessible(nsIContent* aContent, DocAccessible* aDoc) :
LeafAccessible(aContent, aDoc)
{
}
role
XULCheckboxAccessible::NativeRole()
{
return roles::CHECKBUTTON;
}
uint8_t
XULCheckboxAccessible::ActionCount()
{
return 1;
}
void
XULCheckboxAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName)
{
if (aIndex == eAction_Click) {
if (NativeState() & states::CHECKED)
aName.AssignLiteral("uncheck");
else
aName.AssignLiteral("check");
}
}
bool
XULCheckboxAccessible::DoAction(uint8_t aIndex)
{
if (aIndex != eAction_Click)
return false;
DoCommand();
return true;
}
uint64_t
XULCheckboxAccessible::NativeState()
{
// Possible states: focused, focusable, unavailable(disabled), checked
// Get focus and disable status from base class
uint64_t state = LeafAccessible::NativeState();
state |= states::CHECKABLE;
// Determine Checked state
nsCOMPtr<nsIDOMXULCheckboxElement> xulCheckboxElement =
do_QueryInterface(mContent);
if (xulCheckboxElement) {
bool checked = false;
xulCheckboxElement->GetChecked(&checked);
if (checked) {
state |= states::CHECKED;
int32_t checkState = 0;
xulCheckboxElement->GetCheckState(&checkState);
if (checkState == nsIDOMXULCheckboxElement::CHECKSTATE_MIXED)
state |= states::MIXED;
}
}
return state;
}
////////////////////////////////////////////////////////////////////////////////
// XULGroupboxAccessible
////////////////////////////////////////////////////////////////////////////////
XULGroupboxAccessible::
XULGroupboxAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
}
role
XULGroupboxAccessible::NativeRole()
{
return roles::GROUPING;
}
ENameValueFlag
XULGroupboxAccessible::NativeName(nsString& aName)
{
// XXX: we use the first related accessible only.
Accessible* label =
RelationByType(RelationType::LABELLED_BY).Next();
if (label)
return label->Name(aName);
return eNameOK;
}
Relation
XULGroupboxAccessible::RelationByType(RelationType aType)
{
Relation rel = AccessibleWrap::RelationByType(aType);
if (aType != RelationType::LABELLED_BY)
return rel;
// The label for xul:groupbox is generated from xul:label that is
// inside the anonymous content of the xul:caption.
// The xul:label has an accessible object but the xul:caption does not
uint32_t childCount = ChildCount();
for (uint32_t childIdx = 0; childIdx < childCount; childIdx++) {
Accessible* childAcc = GetChildAt(childIdx);
if (childAcc->Role() == roles::LABEL) {
// Ensure that it's our label
Relation reverseRel = childAcc->RelationByType(RelationType::LABEL_FOR);
Accessible* testGroupbox = nullptr;
while ((testGroupbox = reverseRel.Next()))
if (testGroupbox == this) {
// The <label> points back to this groupbox
rel.AppendTarget(childAcc);
}
}
}
return rel;
}
////////////////////////////////////////////////////////////////////////////////
// XULRadioButtonAccessible
////////////////////////////////////////////////////////////////////////////////
XULRadioButtonAccessible::
XULRadioButtonAccessible(nsIContent* aContent, DocAccessible* aDoc) :
RadioButtonAccessible(aContent, aDoc)
{
}
uint64_t
XULRadioButtonAccessible::NativeState()
{
uint64_t state = LeafAccessible::NativeState();
state |= states::CHECKABLE;
nsCOMPtr<nsIDOMXULSelectControlItemElement> radioButton =
do_QueryInterface(mContent);
if (radioButton) {
bool selected = false; // Radio buttons can be selected
radioButton->GetSelected(&selected);
if (selected) {
state |= states::CHECKED;
}
}
return state;
}
uint64_t
XULRadioButtonAccessible::NativeInteractiveState() const
{
return NativelyUnavailable() ? states::UNAVAILABLE : states::FOCUSABLE;
}
////////////////////////////////////////////////////////////////////////////////
// XULRadioButtonAccessible: Widgets
Accessible*
XULRadioButtonAccessible::ContainerWidget() const
{
return mParent;
}
////////////////////////////////////////////////////////////////////////////////
// XULRadioGroupAccessible
////////////////////////////////////////////////////////////////////////////////
/**
* XUL Radio Group
* The Radio Group proxies for the Radio Buttons themselves. The Group gets
* focus whereas the Buttons do not. So we only have an accessible object for
* this for the purpose of getting the proper RadioButton. Need this here to
* avoid circular reference problems when navigating the accessible tree and
* for getting to the radiobuttons.
*/
XULRadioGroupAccessible::
XULRadioGroupAccessible(nsIContent* aContent, DocAccessible* aDoc) :
XULSelectControlAccessible(aContent, aDoc)
{
}
role
XULRadioGroupAccessible::NativeRole()
{
return roles::RADIO_GROUP;
}
uint64_t
XULRadioGroupAccessible::NativeInteractiveState() const
{
// The radio group is not focusable. Sometimes the focus controller will
// report that it is focused. That means that the actual selected radio button
// should be considered focused.
return NativelyUnavailable() ? states::UNAVAILABLE : 0;
}
////////////////////////////////////////////////////////////////////////////////
// XULRadioGroupAccessible: Widgets
bool
XULRadioGroupAccessible::IsWidget() const
{
return true;
}
bool
XULRadioGroupAccessible::IsActiveWidget() const
{
return FocusMgr()->HasDOMFocus(mContent);
}
bool
XULRadioGroupAccessible::AreItemsOperable() const
{
return true;
}
////////////////////////////////////////////////////////////////////////////////
// XULStatusBarAccessible
////////////////////////////////////////////////////////////////////////////////
XULStatusBarAccessible::
XULStatusBarAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
}
role
XULStatusBarAccessible::NativeRole()
{
return roles::STATUSBAR;
}
////////////////////////////////////////////////////////////////////////////////
// XULToolbarButtonAccessible
////////////////////////////////////////////////////////////////////////////////
XULToolbarButtonAccessible::
XULToolbarButtonAccessible(nsIContent* aContent, DocAccessible* aDoc) :
XULButtonAccessible(aContent, aDoc)
{
}
void
XULToolbarButtonAccessible::GetPositionAndSizeInternal(int32_t* aPosInSet,
int32_t* aSetSize)
{
int32_t setSize = 0;
int32_t posInSet = 0;
Accessible* parent = Parent();
if (!parent)
return;
uint32_t childCount = parent->ChildCount();
for (uint32_t childIdx = 0; childIdx < childCount; childIdx++) {
Accessible* child = parent->GetChildAt(childIdx);
if (IsSeparator(child)) { // end of a group of buttons
if (posInSet)
break; // we've found our group, so we're done
setSize = 0; // not our group, so start a new group
} else {
setSize++; // another button in the group
if (child == this)
posInSet = setSize; // we've found our button
}
}
*aPosInSet = posInSet;
*aSetSize = setSize;
}
bool
XULToolbarButtonAccessible::IsSeparator(Accessible* aAccessible)
{
nsIContent* content = aAccessible->GetContent();
return content && content->IsAnyOfXULElements(nsGkAtoms::toolbarseparator,
nsGkAtoms::toolbarspacer,
nsGkAtoms::toolbarspring);
}
////////////////////////////////////////////////////////////////////////////////
// XULToolbarAccessible
////////////////////////////////////////////////////////////////////////////////
XULToolbarAccessible::
XULToolbarAccessible(nsIContent* aContent, DocAccessible* aDoc) :
AccessibleWrap(aContent, aDoc)
{
}
role
XULToolbarAccessible::NativeRole()
{
return roles::TOOLBAR;
}
ENameValueFlag
XULToolbarAccessible::NativeName(nsString& aName)
{
if (mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::toolbarname, aName))
aName.CompressWhitespace();
return eNameOK;
}
////////////////////////////////////////////////////////////////////////////////
// XULToolbarAccessible
////////////////////////////////////////////////////////////////////////////////
XULToolbarSeparatorAccessible::
XULToolbarSeparatorAccessible(nsIContent* aContent, DocAccessible* aDoc) :
LeafAccessible(aContent, aDoc)
{
}
role
XULToolbarSeparatorAccessible::NativeRole()
{
return roles::SEPARATOR;
}
uint64_t
XULToolbarSeparatorAccessible::NativeState()
{
return 0;
}