gecko-dev/accessible/src/mac/mozActionElements.mm

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/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Original Author: Håkan Waara <hwaara@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#import "mozActionElements.h"
#import "nsIAccessible.h"
#include "nsObjCExceptions.h"
extern const NSString *kInstanceDescriptionAttribute; // NSAccessibilityDescriptionAttribute
extern const NSString *kTopLevelUIElementAttribute; // NSAccessibilityTopLevelUIElementAttribute
enum CheckboxValue {
// these constants correspond to the values in the OS
kUnchecked = 0,
kChecked = 1,
kMixed = 2
};
@implementation mozButtonAccessible
- (NSArray*)accessibilityAttributeNames
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
static NSArray *attributes = nil;
if (!attributes) {
attributes = [[NSArray alloc] initWithObjects:NSAccessibilityParentAttribute, // required
NSAccessibilityRoleAttribute, // required
NSAccessibilityPositionAttribute, // required
NSAccessibilitySizeAttribute, // required
NSAccessibilityWindowAttribute, // required
NSAccessibilityPositionAttribute, // required
kTopLevelUIElementAttribute, // required
NSAccessibilityHelpAttribute,
NSAccessibilityEnabledAttribute, // required
NSAccessibilityFocusedAttribute, // required
NSAccessibilityTitleAttribute, // required
kInstanceDescriptionAttribute,
nil];
}
return attributes;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (id)accessibilityAttributeValue:(NSString *)attribute
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([attribute isEqualToString:NSAccessibilityChildrenAttribute])
return nil;
return [super accessibilityAttributeValue:attribute];
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (BOOL)accessibilityIsIgnored
{
return mIsExpired;
}
- (NSArray*)accessibilityActionNames
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([self isEnabled])
return [NSArray arrayWithObject:NSAccessibilityPressAction];
return nil;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (NSString*)accessibilityActionDescription:(NSString*)action
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([action isEqualToString:NSAccessibilityPressAction])
return @"press button"; // XXX: localize this later?
return nil;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (void)accessibilityPerformAction:(NSString*)action
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
if ([action isEqualToString:NSAccessibilityPressAction])
[self click];
NS_OBJC_END_TRY_ABORT_BLOCK;
}
- (void)click
{
// both buttons and checkboxes have only one action. we should really stop using arbitrary
// arrays with actions, and define constants for these actions.
mGeckoAccessible->DoAction(0);
}
@end
@implementation mozCheckboxAccessible
- (NSString*)accessibilityActionDescription:(NSString*)action
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([action isEqualToString:NSAccessibilityPressAction]) {
if ([self isChecked] != kUnchecked)
return @"uncheck checkbox"; // XXX: localize this later?
return @"check checkbox"; // XXX: localize this later?
}
return nil;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (int)isChecked
{
PRUint32 state = 0;
mGeckoAccessible->GetStateInternal(&state, nsnull);
2007-04-04 10:36:38 +00:00
// check if we're checked or in a mixed state
2007-03-16 09:56:07 +00:00
if (state & nsIAccessibleStates::STATE_CHECKED) {
return (state & nsIAccessibleStates::STATE_MIXED) ? kMixed : kChecked;
}
return kUnchecked;
}
- (id)value
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
return [NSNumber numberWithInt:[self isChecked]];
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
@end
@implementation mozPopupButtonAccessible
- (NSArray *)accessibilityAttributeNames
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
static NSArray *attributes = nil;
if (!attributes) {
attributes = [[NSArray alloc] initWithObjects:NSAccessibilityParentAttribute, // required
NSAccessibilityPositionAttribute, // required
NSAccessibilityRoleAttribute, // required
NSAccessibilitySizeAttribute, // required
NSAccessibilityWindowAttribute, // required
kTopLevelUIElementAttribute, // required
NSAccessibilityHelpAttribute,
NSAccessibilityEnabledAttribute, // required
NSAccessibilityFocusedAttribute, // required
NSAccessibilityTitleAttribute, // required for popupmenus, and for menubuttons with a title
NSAccessibilityChildrenAttribute, // required
kInstanceDescriptionAttribute, // required if it has no title attr
nil];
}
return attributes;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (id)accessibilityAttributeValue:(NSString *)attribute
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
return [super children];
}
return [super accessibilityAttributeValue:attribute];
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (NSArray *)accessibilityActionNames
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
if ([self isEnabled]) {
return [NSArray arrayWithObjects:NSAccessibilityPressAction,
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
NSAccessibilityShowMenuAction,
#endif
nil];
}
return nil;
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (NSString *)accessibilityActionDescription:(NSString *)action
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
if ([action isEqualToString:NSAccessibilityShowMenuAction])
return @"show menu";
#endif
return [super accessibilityActionDescription:action];
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}
- (void)accessibilityPerformAction:(NSString *)action
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
// both the ShowMenu and Click action do the same thing.
if ([self isEnabled]) {
// TODO: this should bring up the menu, but currently doesn't.
// once msaa and atk have merged better, they will implement
// the action needed to show the menu.
[super click];
}
NS_OBJC_END_TRY_ABORT_BLOCK;
}
@end