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/*
* PGSectionedString.m
* graphviz
*
* Created by Glen Low on Thu Jan 08 2004.
* Copyright (c) 2004, Pixelglow Software. All rights reserved.
* http://www.pixelglow.com/graphviz/
* graphviz@pixelglow.com
*
* Redistribution and use in source and binary forms, with or without modification, are permitted
* provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this list of conditions
* and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice, this list of conditions
* and the following disclaimer in the documentation and/or other materials provided with the distribution.
* * Neither the name of Pixelglow Software nor the names of its contributors may be used to endorse or
* promote products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "PGSectionedString.h"
unsigned int maxOrder_ = 0;
@implementation PGSectionedString
- (id) initWithMutableAttributedString: (NSMutableAttributedString*) string
{
if ((self = [super init]))
{
string_ = [string retain];
order_ = maxOrder_++;
attributeAtIndexEffectiveRange_ = (AttributeAtIndexEffectiveRangeMethod)
[string methodForSelector: @selector (attribute:atIndex:effectiveRange:)];
}
return self;
}
- (NSMutableAttributedString*) attributedString
{
return string_;
}
- (NSRange) range
{
unsigned int stringLength = [string_ length];
unsigned int start = 0;
unsigned int finish = stringLength;
while (start != finish)
{
unsigned int check = (start + finish - 1) / 2;
NSRange effectiveRange;
NSNumber* checkOrder =
attributeAtIndexEffectiveRange_ (string_, @selector (attribute:atIndex:effectiveRange:), SectionedStringOrder, check, &effectiveRange);
if (checkOrder)
{
unsigned int checkOrderValue = [checkOrder unsignedIntValue];
if (checkOrderValue < order_)
start = effectiveRange.location + effectiveRange.length;
else if (checkOrderValue > order_)
finish = effectiveRange.location;
else
{
IsEqualToNumberMethod isEqualToNumber = (IsEqualToNumberMethod) [checkOrder methodForSelector: @selector (isEqualToNumber:)];
start = effectiveRange.location;
do
finish = effectiveRange.location + effectiveRange.length;
while (finish != stringLength
&& isEqualToNumber (checkOrder, @selector (isEqualToNumber:), attributeAtIndexEffectiveRange_ (string_, @selector (attribute:atIndex:effectiveRange:), SectionedStringOrder, finish, &effectiveRange)));
do
start = effectiveRange.location;
while (start != 0
&& isEqualToNumber (checkOrder, @selector (isEqualToNumber:), attributeAtIndexEffectiveRange_ (string_, @selector (attribute:atIndex:effectiveRange:), SectionedStringOrder, start - 1, &effectiveRange)));
return NSMakeRange (start, finish - start);
}
}
else
break;
}
return NSMakeRange (start, 0);
}
- (void) appendAttributedString: (NSAttributedString*) attributedString
{
NSRange selfRange = [self range];
unsigned int finish = selfRange.location + selfRange.length;
[string_ insertAttributedString: attributedString atIndex: finish];
[string_ addAttribute: SectionedStringOrder value: [NSNumber numberWithUnsignedInt: order_] range: NSMakeRange (finish, [attributedString length])];
}
- (void) removeAttribute: (NSString*) attribute range: (NSRange) range
{
NSRange selfRange = [self range];
if (range.length > selfRange.length)
[[NSException exceptionWithName: NSRangeException reason: @"" userInfo: nil] raise];
range.location += range.location;
[string_ removeAttribute: attribute range: [self range]];
}
- (unsigned int) length
{
return [self range].length;
}
- (void) removeAttribute: (NSString*) attribute
{
[string_ removeAttribute: attribute range: [self range]];
}
- (void) dealloc
{
[string_ release];
[super dealloc];
}
@end
NSString* SectionedStringOrder = @"SectionedStringOrder";
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