118 lines
2.9 KiB
Objective-C
Executable File
118 lines
2.9 KiB
Objective-C
Executable File
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#import "DNDArrayController.h"
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@implementation DNDArrayController
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NSString *MovedRowsType = @"MOVED_ROWS_TYPE";
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NSString *CogUrlsPboardType = @"COG_URLS_TYPE";
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// @"CorePasteboardFlavorType 0x6974756E" is the "itun" type representing an iTunes plist
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NSString *iTunesDropType = @"CorePasteboardFlavorType 0x6974756E";
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- (void)awakeFromNib
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{
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// register for drag and drop
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[tableView registerForDraggedTypes:[NSArray arrayWithObjects:MovedRowsType, CogUrlsPboardType, NSFilenamesPboardType, iTunesDropType, nil]];
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}
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- (BOOL)tableView:(NSTableView *)aTableView writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard *)pboard
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{
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NSLog(@"INDEX SET ON DRAG: %@", rowIndexes);
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NSData *data = [NSArchiver archivedDataWithRootObject:rowIndexes];
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[pboard declareTypes: [NSArray arrayWithObjects:MovedRowsType, nil] owner:self];
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[pboard setData:data forType: MovedRowsType];
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return YES;
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}
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- (NSDragOperation)tableView:(NSTableView*)tv
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validateDrop:(id <NSDraggingInfo>)info
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proposedRow:(int)row
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proposedDropOperation:(NSTableViewDropOperation)op
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{
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NSDragOperation dragOp = NSDragOperationCopy;
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if ([info draggingSource] == tv)
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dragOp = NSDragOperationMove;
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NSLog(@"VALIDATING DROP!");
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// we want to put the object at, not over,
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// the current row (contrast NSTableViewDropOn)
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[tv setDropRow:row dropOperation:NSTableViewDropAbove];
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return dragOp;
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}
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- (BOOL)tableView:(NSTableView*)tv
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acceptDrop:(id <NSDraggingInfo>)info
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row:(int)row
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dropOperation:(NSTableViewDropOperation)op
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{
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if (row < 0)
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{
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row = 0;
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}
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// if drag source is self, it's a move
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if ([info draggingSource] == tableView)
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{
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NSIndexSet *indexSet = [NSUnarchiver unarchiveObjectWithData:[[info draggingPasteboard] dataForType:MovedRowsType]];
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if (indexSet)
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{
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NSLog(@"INDEX SET ON DROP: %@", indexSet);
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NSArray *selected = [[self arrangedObjects] objectsAtIndexes:indexSet];
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[self moveObjectsInArrangedObjectsFromIndexes:indexSet toIndex:row];
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[self setSelectedObjects:selected];
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NSLog(@"ACCEPTING DROP!");
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return YES;
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}
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}
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NSLog(@"REJECTING DROP!");
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return NO;
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}
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-(void) moveObjectsInArrangedObjectsFromIndexes:(NSIndexSet*)indexSet
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toIndex:(unsigned int)insertIndex
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{
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NSArray *objects = [self arrangedObjects];
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NSUInteger index = [indexSet lastIndex];
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int aboveInsertIndexCount = 0;
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id object;
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int removeIndex;
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while (NSNotFound != index)
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{
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if (index >= insertIndex) {
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removeIndex = index + aboveInsertIndexCount;
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aboveInsertIndexCount += 1;
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}
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else
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{
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removeIndex = index;
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insertIndex -= 1;
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}
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object = [objects objectAtIndex:removeIndex];
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[object retain];
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[self removeObjectAtArrangedObjectIndex:removeIndex];
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[self insertObject:object atArrangedObjectIndex:insertIndex];
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[object release];
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index = [indexSet indexLessThanIndex:index];
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}
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}
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@end
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