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clean up item moves a bit.

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also switch media to be a mutable array (which it secretly was) and
modify in-place to be cleaner.
This commit is contained in:
Kelvin Sherlock 2020-09-06 00:31:09 -04:00
parent 498fd337eb
commit f2b08c45a3
1 changed files with 35 additions and 30 deletions
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65
Ample/MediaViewController.m
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@ -29,7 +29,7 @@
}
@property NSInteger validCount;
@property NSArray *children; // URLs?
@property NSMutableArray *children; // URLs?
@property NSString *title;
@property NSInteger index;
@ -95,30 +95,29 @@
}
unsigned count = (unsigned)[_children count];
NSMutableArray *tmp = [NSMutableArray arrayWithArray: _children];
_validCount = newCount;
if (!_children) _children = [NSMutableArray new];
for (unsigned i = count; i < newCount; ++i) {
MediaItem *item = [MediaItem new];
[item setIndex: i];
[tmp addObject: item];
[_children addObject: item];
}
// delete excess items, if blank. otherwise, mark invalid.
unsigned ix = 0;
for(MediaItem *item in tmp) {
for(MediaItem *item in _children) {
[item setValid: ix++ < newCount];
}
for (unsigned i = newCount; i < count; ++i) {
MediaItem *item = [tmp lastObject];
MediaItem *item = [_children lastObject];
if ([item url]) break;
[tmp removeLastObject];
[_children removeLastObject];
}
[self setChildren: tmp];
return YES;
}
@ -127,24 +126,45 @@
BOOL delta = NO;
if (_validCount == count) return NO;
NSMutableArray *tmp = [NSMutableArray arrayWithArray: _children];
for (NSInteger i = _validCount; i < count; ++i) {
MediaItem *item = [tmp lastObject];
MediaItem *item = [_children lastObject];
if ([item url]) break;
[tmp removeLastObject];
[_children removeLastObject];
delta = YES;
}
if (delta) {
[self setChildren: tmp];
return YES;
}
return NO;
}
-(BOOL)moveItemFrom: (NSInteger)oldIndex to: (NSInteger)newIndex {
if (newIndex == oldIndex) return NO;
NSUInteger count = [_children count];
if (oldIndex >= count) return NO;
MediaItem *item = [_children objectAtIndex: oldIndex];
[_children removeObjectAtIndex: oldIndex];
if (newIndex > oldIndex) newIndex--;
if (newIndex >= count) {
[_children addObject: item];
} else {
[_children insertObject: item atIndex: newIndex];
}
// re-index and re-validate.
unsigned ix = 0;
for (MediaItem *item in _children) {
[item setIndex: ix];
[item setValid: ix < _validCount];
++ix;
}
[self pruneChildren];
return YES;
}
@end
@implementation MediaItem
-(instancetype)initWithURL: (NSURL *)url {
@ -539,25 +559,10 @@ static NSString *kDragType = @"private.ample.media";
NSInteger oldIndex = indexes[1];
NSMutableArray *array = [[cat children] mutableCopy];
MediaItem *it = [array objectAtIndex: oldIndex];
[array removeObjectAtIndex: oldIndex];
if (index > [array count]) {
[array addObject: it];
} else if (index < oldIndex) {
[array insertObject: it atIndex: index];
} else {
[array insertObject: it atIndex: index-1]; //?
}
unsigned ix = 0;
for (MediaItem *it in array) {
[it setIndex: ix++];
}
[cat setChildren: array];
[cat moveItemFrom: oldIndex to: index];
[self rebuildArgs];
[_outlineView reloadItem: cat reloadChildren: YES];
[self rebuildArgs];
return YES;
}