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ChapterEditor.m
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ChapterEditor.m
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//
// ChapterEditor.m
// MetaZ
//
// Created by Brian Olsen on 11/10/09.
// Copyright 2009 Maven-Group. All rights reserved.
//
#import "ChapterEditor.h"
#import "ChapterItemWrapper.h"
@interface ChapterEditor ()
- (void)makeEditorChapters;
@end
@implementation ChapterEditor
@synthesize slider;
@synthesize filesController;
@synthesize undoController;
@synthesize editorChapters;
@synthesize slideMin;
@synthesize slideMax;
+ (void)initialize
{
if(self != [ChapterEditor class])
return;
[self exposeBinding:@"chapters"];
[self exposeBinding:@"chapterNames"];
}
+ (NSSet *)keyPathsForValuesAffectingHideSlider
{
return [NSSet setWithObjects:@"slideMin", @"slideMax", nil];
}
- (void)awakeFromNib
{
NSDictionary* dict = [NSDictionary
dictionaryWithObject:[NSNumber numberWithBool:YES]
forKey:NSContinuouslyUpdatesValueBindingOption];
[self bind:@"chapters" toObject:filesController withKeyPath:@"selection.chapters" options:dict];
[self bind:@"chapterNames" toObject:filesController withKeyPath:@"selection.chapterNames" options:dict];
[filesController addObserver:self forKeyPath:@"selection.chaptersChanged" options:0 context:NULL];
}
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([keyPath isEqual:@"selection.chaptersChanged"] && object == filesController)
{
useCachedChanged = YES;
[self willChangeValueForKey:@"changed"];
useCachedChanged = NO;
[self didChangeValueForKey:@"changed"];
}
else
{
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
- (NSArray *)chapters
{
return chapters;
}
- (void)setChapters:(NSArray *)newChapters
{
chapters = [newChapters retain];
[self makeEditorChapters];
}
- (BOOL)chaptersChanged
{
id changed = [filesController valueForKeyPath:@"selection.chaptersChanged"];
return [changed isKindOfClass:[NSNumber class]] &&
[changed boolValue];
}
- (NSNumber *)changed
{
if(useCachedChanged)
return cachedChanged;
return cachedChanged = [filesController valueForKeyPath:@"selection.chaptersChanged"];
}
- (void)setChanged:(NSNumber *)value
{
BOOL change = [value boolValue];
if(change)
[self itemChanged:nil];
else
[filesController setValue:[NSNumber numberWithBool:NO] forKeyPath:@"selection.chaptersChanged"];
}
- (NSArray *)chapterNames
{
return chapterNames;
}
- (void)setChapterNames:(NSArray *)newChapterNames
{
chapterNames = [newChapterNames retain];
if(!self.chaptersChanged)
[self makeEditorChapters];
}
- (void)itemChanged:(ChapterItemWrapper *)item;
{
if(self.chaptersChanged)
{
if(item)
{
NSUndoManager* undo = [undoController undoManager];
[undo setActionName:NSLocalizedString(@"Update Chapter", @"Update chapter undo action")];
[undo registerUndoWithTarget:item selector:@selector(setText:) object:item.item.text];
item.item.text = item.text;
}
return;
}
if(item)
item.item.text = item.text;
NSMutableArray* nextEdits = [NSMutableArray array];
for(ChapterItemWrapper* wrap in editorChapters)
{
MZMutableTimedTextItem* item = [wrap item];
if(item)
{
[item setText:[wrap text]];
[nextEdits addObject:item];
}
}
[filesController setValue:nextEdits forKeyPath:@"selection.chapters"];
}
- (NSInteger)slide
{
return slide;
}
- (void)setSlide:(NSInteger)newSlide
{
BOOL makeEdits = slide!=newSlide;
slide = newSlide;
if(makeEdits)
[self makeEditorChapters];
}
- (BOOL)hideSlider
{
return slideMin == slideMax;
}
- (void)makeEditorChapters
{
if(!chapters)
{
[self willChangeValueForKey:@"editorChapters"];
[editorChapters release];
editorChapters = nil;
[self didChangeValueForKey:@"editorChapters"];
return;
}
NSUInteger chapterLen = [chapters count];
NSUInteger chapterNamesLen = [chapterNames count];
NSUInteger editsLen = [editorChapters count];
NSMutableArray* nextEdits = [NSMutableArray array];
NSInteger newSlide = -slide;
NSInteger newSlideMin; // = slideMin;
if(self.chaptersChanged)
{
newSlideMin = 0;
BOOL changed = NO;
for(int i=0; i<chapterLen; i++)
{
MZTimedTextItem* item = [chapters objectAtIndex:i];
ChapterItemWrapper* wrapper = nil;
NSString* name = [item text];
if(i < editsLen)
{
wrapper = [editorChapters objectAtIndex:i];
wrapper.num = i+1;
if(![[wrapper text] isEqualToString:name])
{
[wrapper updateText:name];
changed = YES;
}
if([wrapper item] != item)
{
[wrapper setItem:item];
changed = YES;
}
}
else
changed = YES;
if(!wrapper)
wrapper = [ChapterItemWrapper wrapperWithEditor:self no:i+1 text:[item text] item:item];
[nextEdits addObject:wrapper];
}
if(!changed && editsLen <= chapterLen)
return;
}
else if(chapterLen > chapterNamesLen)
{
if(newSlide+chapterNamesLen > chapterLen)
newSlide = chapterLen-chapterNamesLen;
if(chapterNamesLen > 0)
newSlideMin = chapterNamesLen-chapterLen;
else
newSlideMin = 0;
NSRange namesRange = NSMakeRange(newSlide, chapterNamesLen);
for(int i=0; i<chapterLen; i++)
{
MZTimedTextItem* item = [chapters objectAtIndex:i];
NSString* name;
if( NSLocationInRange(i, namesRange) )
name = [chapterNames objectAtIndex:i-namesRange.location];
else
name = [item text];
ChapterItemWrapper* wrapper = nil;
if(i < editsLen)
{
wrapper = [editorChapters objectAtIndex:i];
wrapper.num = i+1;
if(![[wrapper text] isEqualToString:name])
[wrapper updateText:name];
if([wrapper item] != item)
[wrapper setItem:item];
}
if(!wrapper)
wrapper = [ChapterItemWrapper wrapperWithEditor:self no:i+1 text:name item:item];
[nextEdits addObject:wrapper];
}
}
else if(chapterNamesLen > chapterLen)
{
if(newSlide+chapterLen > chapterNamesLen)
newSlide = chapterNamesLen - chapterLen;
newSlideMin = chapterLen-chapterNamesLen;
NSRange chaptersRange = NSMakeRange(newSlide, chapterLen);
for(int i=0; i<chapterNamesLen; i++)
{
NSString* name = [chapterNames objectAtIndex:i];
MZTimedTextItem* item = nil;
NSInteger no = -1;
if(NSLocationInRange(i, chaptersRange))
{
item = [chapters objectAtIndex:i-chaptersRange.location];
no = i-chaptersRange.location+1;
}
ChapterItemWrapper* wrapper = nil;
if(i < editsLen)
{
wrapper = [editorChapters objectAtIndex:i];
wrapper.num = no;
if(![[wrapper text] isEqualToString:name])
[wrapper updateText:name];
if([wrapper item] != item)
[wrapper setItem:item];
}
if(!wrapper)
wrapper = [ChapterItemWrapper wrapperWithEditor:self no:no text:name item:item];
[nextEdits addObject:wrapper];
}
}
else
{
newSlide = 0;
newSlideMin = 0;
for(int i=0; i<chapterLen; i++)
{
MZTimedTextItem* item = [chapters objectAtIndex:i];
NSString* name = [chapterNames objectAtIndex:i];
ChapterItemWrapper* wrapper = nil;
if(i < editsLen)
{
wrapper = [editorChapters objectAtIndex:i];
wrapper.num = i+1;
if(![[wrapper text] isEqualToString:name])
[wrapper updateText:name];
if([wrapper item] != item )
[wrapper setItem:item];
}
if(!wrapper)
wrapper = [ChapterItemWrapper wrapperWithEditor:self no:i+1 text:name item:item];
[nextEdits addObject:wrapper];
}
}
if(slide != -newSlide)
{
[self willChangeValueForKey:@"slide"];
slide = -newSlide;
[self didChangeValueForKey:@"slide"];
}
if(slideMin != newSlideMin)
{
[self willChangeValueForKey:@"slideMin"];
slideMin = newSlideMin;
[self didChangeValueForKey:@"slideMin"];
[slider setNumberOfTickMarks:-newSlideMin+1];
[slider setIntegerValue:slide];
}
[self willChangeValueForKey:@"editorChapters"];
[editorChapters release];
editorChapters = [nextEdits retain];
[self didChangeValueForKey:@"editorChapters"];
}
@end