117 lines
3.4 KiB
Objective-C
Executable File
117 lines
3.4 KiB
Objective-C
Executable File
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#import "DNDArrayController.h"
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#import "Logging.h"
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NSString *CogDNDIndexType = @"org.cogx.cog.dnd-index";
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NSString *CogUrlsPboardType = @"org.cogx.cog.url";
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NSString *iTunesDropType = @"com.apple.tv.metadata";
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@implementation DNDArrayController
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- (void)awakeFromNib {
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[super awakeFromNib];
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// register for drag and drop
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[self.tableView registerForDraggedTypes:@[CogDNDIndexType,
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CogUrlsPboardType,
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NSPasteboardTypeFileURL,
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iTunesDropType]];
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}
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- (id <NSPasteboardWriting>)tableView:(NSTableView *)tableView
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pasteboardWriterForRow:(NSInteger)row {
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NSPasteboardItem *item = [[NSPasteboardItem alloc] init];
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[item setString:[@(row) stringValue] forType:CogDNDIndexType];
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return item;
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}
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- (void)tableView:(NSTableView *)tableView
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draggingSession:(NSDraggingSession *)session
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willBeginAtPoint:(NSPoint)screenPoint
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forRowIndexes:(NSIndexSet *)rowIndexes {
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DLog(@"Drag session started with indexes: %@", rowIndexes);
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}
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- (NSDragOperation)tableView:(NSTableView *)tableView
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validateDrop:(id <NSDraggingInfo>)info
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proposedRow:(NSInteger)row
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proposedDropOperation:(NSTableViewDropOperation)dropOperation {
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NSDragOperation dragOp = NSDragOperationCopy;
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if ([info draggingSource] == tableView)
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dragOp = NSDragOperationMove;
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DLog(@"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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[tableView setDropRow:row dropOperation:NSTableViewDropAbove];
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return dragOp;
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}
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- (BOOL)tableView:(NSTableView *)tableView
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acceptDrop:(id <NSDraggingInfo>)info
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row:(NSInteger)row
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dropOperation:(NSTableViewDropOperation)dropOperation {
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if (row < 0) {
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row = 0;
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}
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NSArray<NSPasteboardItem *> *items = info.draggingPasteboard.pasteboardItems;
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// if drag source is self, it's a move
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if ([info draggingSource] == tableView || items == nil) {
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NSMutableIndexSet *indexSet = [NSMutableIndexSet indexSet];
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for (NSPasteboardItem *item in items) {
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[indexSet addIndex:(NSUInteger) [[item stringForType:CogDNDIndexType] intValue]];
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}
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if ([indexSet count] > 0) {
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DLog(@"INDEX SET ON DROP: %@", indexSet);
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NSArray *selected = [[self arrangedObjects] objectsAtIndexes:indexSet];
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[self moveObjectsInArrangedObjectsFromIndexes:indexSet toIndex:(unsigned int) row];
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[self setSelectedObjects:selected];
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DLog(@"ACCEPTING DROP!");
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return YES;
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}
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}
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DLog(@"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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NSArray *objects = [self arrangedObjects];
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NSUInteger index = [indexSet lastIndex];
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NSUInteger aboveInsertIndexCount = 0;
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id object;
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NSUInteger removeIndex;
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while (NSNotFound != index) {
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if (index >= insertIndex) {
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removeIndex = index + aboveInsertIndexCount;
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aboveInsertIndexCount += 1;
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} else {
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removeIndex = index;
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insertIndex -= 1;
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}
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object = objects[removeIndex];
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[self removeObjectAtArrangedObjectIndex:removeIndex];
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[self insertObject:object atArrangedObjectIndex:insertIndex];
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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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