CODEWITHSUNDEEP
objective-cmacoscocoawebview
Dr.Kameleon
Dr.Kameleon

Reputation: 22810

Webview as drag destination?

OK, so here's what I need (though I still have found no real answer to my questions) :

I've tried via the WebUIDelegate and its methods, even registerForDraggedTypes, but still without success.

Any ideas? Is there anywhere a complete example of how this can be achieved?

Upvotes: 0

Views: 157

Answers (1)

Amitg2k12
Amitg2k12

Reputation: 3805

I did it in my application, followings are the key points, if you still looking for it,

Let it accept drop into the webview

[self registerForDraggedTypes:
 [NSArray arrayWithObjects:MyPrivateTableViewDataType,NSFilenamesPboardType,nil]];

Handle Dragging entered to verify / validate the item which is being dragged. 

- (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender{
    pboard = [sender draggingPasteboard];

    if ( [[pboard types] containsObject:MyPrivateTableViewDataType] ) {
        if (sourceDragMask & NSDragOperationGeneric) {
            return NSDragOperationGeneric;
        }
    }

}
- (BOOL)prepareForDragOperation:(id < NSDraggingInfo >)sender{
    NSPasteboard *pboard;

    pboard = [sender draggingPasteboard];

    if ( [[pboard types] containsObject:MyPrivateTableViewDataType] ) {
        // Only a copy operation allowed so just copy the data
        return YES;
    }
    else if ( [[pboard types] containsObject:NSURLPboardType] ) {
        return YES;

    }
    return NO;
}

and finally perform/complete the drag-drop

- (BOOL)performDragOperation:(id < NSDraggingInfo >)sender{

    NSPasteboard *pboard;

    pboard = [sender draggingPasteboard];

    if ( [[pboard types] containsObject:MyPrivateTableViewDataType] ) {
        // Only a copy operation allowed so just copy the data
            return YES;
        }
        else{
            return NO;
        }

    } else if ( [[pboard types] containsObject:NSURLPboardType] ) {
        NSURL *url = [NSURL URLFromPasteboard: pboard];
        NSString *filePath= [url path];
        return YES;
    }

    return NO;
}

Upvotes: 1

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