mouse pointer for drag copy
mouse pointer for drag copy
- Subject: mouse pointer for drag copy
- From: Adam Maxwell <email@hidden>
- Date: Thu, 29 Jul 2004 12:11:14 -0500
I'm using promise drags to copy files from a table view to the Finder,
based on code I found from the archives of this list. Things are
working fine, but I don't see the mouse pointer change to the green
circle with a plus sign that typically indicates a drag copy in the
Finder and elsewhere. Do I have to do something special to get this?
For completeness' sake, here is the code I use to set up the drag in my
table view delegate:
- (BOOL)tableView:(NSTableView *)tv writeRows:(NSArray *)rows
toPasteboard:(NSPasteboard *)pboard{
NSEnumerator *e = [rows objectEnumerator];
NSNumber *row;
NSMutableDictionary *dict = [NSMutableDictionary
dictionaryWithCapacity:2];
// set up the dragged image stuff
NSPoint dragPosition = [tv convertPoint:[window
convertScreenToBase:[NSEvent mouseLocation]] fromView:nil];
NSRect imageLocation;
dragPosition.x -= 16;
dragPosition.y -= 16;
imageLocation.origin = dragPosition;
imageLocation.size = NSMakeSize(32,32);
// we want the drag to occur for the row that is clicked, not the
row that is selected
if(![tv isRowSelected:[tv rowAtPoint:dragPosition]]){
[tv selectRow:[tv rowAtPoint:dragPosition] byExtendingSelection:NO];
}
// set up the pasteboard for the promise drag
[pboard declareTypes:[NSArray
arrayWithObject:NSFilesPromisePboardType] owner:nil];
[pboard setPropertyList:[self namesOfSelectedFiles]
forType:NSFilesPromisePboardType];
// this array (private ivar) stores the new and old path of all the
files we are dragging
[BR_dragDictArray removeAllObjects];
while(row = [e nextObject]){
if([[theFileHandler newPathAtIndex:row] isEqualToString:@""]){// check
to see if we've renamed/previewed yet
return NO; // return NO to avoid hanging the drag
receiver
} else {
[dict setObject:[theFileHandler oldPathAtIndex:row] forKey:@"old"];
[dict setObject:[theFileHandler newPathAtIndex:row] forKey:@"new"];
[BR_dragDictArray addObject:[dict copy]];
[dict removeAllObjects];
}
}
[tv dragPromisedFilesOfTypes:[NSArray arrayWithObject:@""]
fromRect:imageLocation
source:tv
slideBack:YES
event:[NSApp currentEvent]];
return NO;
}
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