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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>ImageMapExample - /ImageMapAccessibility.m</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Cocoa/index.html">Cocoa</a> > <a href="../../samplecode/Cocoa/idxAccessibility-date.html">Accessibility</a> > <A HREF="javascript:location.replace('index.html');">ImageMapExample</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">ImageMapExample</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/ImageMapAccessibility.m</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/FauxUIElement.h</option>
<option value="listing2.html">/FauxUIElement.m</option>
<option value="listing3.html">/FauxUIElement.txt</option>
<option value="listing4.html">/FoodPyramid.html</option>
<option value="listing5.html">/ImageMap.h</option>
<option value="listing6.html">/ImageMap.m</option>
<option value="listing7.html">/ImageMap.txt</option>
<option value="listing8.html">/ImageMapAccessibility.m</option>
<option value="listing9.html">/ImageMapExampleController.h</option>
<option value="listing10.html">/ImageMapExampleController.m</option>
<option value="listing11.html">/ImageMapPrivate.h</option>
<option value="listing12.html">/main.m</option>
<option value="listing13.html">/README.txt</option></select>
</p>
</form>
<p><strong><a href="ImageMapExample.zip">Download Sample</a></strong> (“ImageMapExample.zip”, 120.0K)<BR>
<strong><a href="ImageMapExample.dmg">Download Sample</a></strong> (“ImageMapExample.dmg”, 178.4K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/*
File: ImageMapAccessibility.m
Abstract: accessibility code for image map widget
Version: <1.0>
© Copyright 2005 Apple Computer, Inc. All rights reserved.
IMPORTANT: This Apple software is supplied to
you by Apple Computer, Inc. ("Apple") in
consideration of your agreement to the following
terms, and your use, installation, modification
or redistribution of this Apple software
constitutes acceptance of these terms. If you do
not agree with these terms, please do not use,
install, modify or redistribute this Apple
software.
In consideration of your agreement to abide by
the following terms, and subject to these terms,
Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this
original Apple software (the "Apple Software"),
to use, reproduce, modify and redistribute the
Apple Software, with or without modifications, in
source and/or binary forms; provided that if you
redistribute the Apple Software in its entirety
and without modifications, you must retain this
notice and the following text and disclaimers in
all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or
logos of Apple Computer, Inc. may be used to
endorse or promote products derived from the
Apple Software without specific prior written
permission from Apple. Except as expressly
stated in this notice, no other rights or
licenses, express or implied, are granted by
Apple herein, including but not limited to any
patent rights that may be infringed by your
derivative works or by other works in which the
Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS
IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE
OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY
SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE,
REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF
THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER
UNDER THEORY OF CONTRACT, TORT (INCLUDING
NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN
IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#import "ImageMapPrivate.h"
#import "FauxUIElement.h"
#import <AppKit/NSAccessibility.h>
@interface HotSpotUIElement : FauxUIElement {
int index;
}
- (id)initWithIndex:(int)anIndex parent:(id)aParent;
+ (HotSpotUIElement *)elementWithIndex:(int)anIndex parent:(id)aParent;
- (int)index;
@end
@implementation HotSpotUIElement
- (id)initWithIndex:(int)anIndex parent:(id)aParent {
if (self = [super initWithRole:NSAccessibilityButtonRole parent:aParent]) {
index = anIndex;
}
return self;
}
+ (HotSpotUIElement *)elementWithIndex:(int)anIndex parent:(id)aParent {
return [[[HotSpotUIElement alloc] initWithIndex:anIndex parent:aParent] autorelease];
}
- (BOOL)isEqual:(id)object {
if ([object isKindOfClass:[HotSpotUIElement self]]) {
HotSpotUIElement *other = object;
return (index == other->index) && [super isEqual:object];
} else {
return NO;
}
}
- (unsigned)hash {
// Equal objects must hash the same.
return [super hash] + index;
}
- (int)index {
return index;
}
- (NSArray *)accessibilityAttributeNames {
ImageMap *imageMap = parent;
if ([imageMap isHTMLImageMap]) {
// For HTML image maps we can provide a description using the alt or title attributes.
static NSArray *attributes = nil;
if (attributes == nil) {
attributes = [[[super accessibilityAttributeNames] arrayByAddingObject:NSAccessibilityDescriptionAttribute] retain];
}
return attributes;
} else {
return [super accessibilityAttributeNames];
}
}
- (id)accessibilityAttributeValue:(NSString *)attribute {
if ([attribute isEqualToString:NSAccessibilityDescriptionAttribute]) {
ImageMap *imageMap = parent;
NSDictionary *info = [imageMap infoForHotSpotAtIndex:index];
NSString *description = [info valueForKey:@"alt"];
if (description == nil) {
description = [info valueForKey:@"title"];
}
return description;
} else {
return [super accessibilityAttributeValue:attribute];
}
}
- (NSArray *)accessibilityActionNames {
return [NSArray arrayWithObject:NSAccessibilityPressAction];
}
- (NSString *)accessibilityActionDescription:(NSString *)action {
return NSAccessibilityActionDescription(action);
}
- (void)accessibilityPerformAction:(NSString *)action {
ImageMap *imageMap = parent;
[imageMap performActionForHotSpotAtIndex:index];
}
@end
@implementation ImageMap (ImageMapAccessibility)
- (BOOL)accessibilityIsIgnored {
return NO;
}
- (id)accessibilityAttributeValue:(NSString *)attribute {
if ([attribute isEqualToString:NSAccessibilityRoleAttribute]) {
return NSAccessibilityGroupRole;
} else if ([attribute isEqualToString:NSAccessibilityRoleDescriptionAttribute]) {
return NSAccessibilityRoleDescriptionForUIElement(self);
} else if ([attribute isEqualToString:NSAccessibilityChildrenAttribute]) {
int numHotSpots = [self numHotSpots];
NSMutableArray *kids = [NSMutableArray arrayWithCapacity:numHotSpots];
int i;
for (i = 0; i < numHotSpots; ++i) {
[kids addObject:[HotSpotUIElement elementWithIndex:i parent:self]];
}
// Handle the default as a giant hot spot - for accessibility purposes.
if ([self hasDefault]) {
[kids addObject:[HotSpotUIElement elementWithIndex:NSNotFound parent:self]];
}
return NSAccessibilityUnignoredChildren(kids);
} else {
return [super accessibilityAttributeValue:attribute];
}
}
- (id)accessibilityHitTest:(NSPoint)point {
NSPoint windowPoint = [[self window] convertScreenToBase:point];
NSPoint localPoint = [self convertPoint:windowPoint fromView:nil];
int index = [self hotSpotIndexForPoint:localPoint];
if (index != NSNotFound || [self hasDefault]) {
// Handle the default as a giant hot spot - for accessibility purposes.
HotSpotUIElement *hotSpot = [HotSpotUIElement elementWithIndex:index parent:self];
// Allow the hot spot to do further hit testing.
return [hotSpot accessibilityHitTest:point];
} else {
return [super accessibilityHitTest:point];
}
}
//
// FauxUIElementChildSupport protocol
//
- (BOOL)isFauxUIElementFocusable:(FauxUIElement *)fauxElement {
// Always NO - unless we add keyboard focus support to image map.
return NO;
}
- (void)fauxUIElement:(FauxUIElement *)fauxElement setFocus:(id)value {
// Never called - unless we add keyboard focus support to image map.
}
- (NSPoint)fauxUIElementPosition:(FauxUIElement *)fauxElement {
HotSpotUIElement *hotSpot = (HotSpotUIElement *)fauxElement;
int index = [hotSpot index];
NSPoint windowPoint;
if (index != NSNotFound) {
NSRect localBounds = [self boundsForHotSpotAtIndex:index];
NSPoint localPoint = localBounds.origin;
if ([self isFlipped]) {
localPoint.y += localBounds.size.height;
}
windowPoint = [self convertPoint:localPoint toView:nil];
} else {
// Handle the default as a giant hot spot - for accessibility purposes.
windowPoint = [self frame].origin;
}
return [[self window] convertBaseToScreen:windowPoint];
}
- (NSSize)fauxUIElementSize:(FauxUIElement *)fauxElement {
HotSpotUIElement *hotSpot = (HotSpotUIElement *)fauxElement;
int index = [hotSpot index];
if (index != NSNotFound) {
NSRect localBounds = [self boundsForHotSpotAtIndex:index];
return [self convertSize:localBounds.size toView:nil];
} else {
// Handle the default as a giant hot spot - for accessibility purposes.
return [self frame].size;
}
}
@end</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
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<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/ImageMapExample/listing8.html%3Fid%3DDTS10003592-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/ImageMapExample/listing8.html%3Fid%3DDTS10003592-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/ImageMapExample/listing8.html%3Fid%3DDTS10003592-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
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</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
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</body>
</html>