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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import "chrome/browser/cocoa/url_drop_target.h"
#include "base/logging.h"
#import "third_party/mozilla/include/NSPasteboard+Utils.h"
@interface URLDropTargetHandler(Private)
// Get the window controller.
- (id<URLDropTargetWindowController>)windowController;
// Gets the appropriate drag operation given the |NSDraggingInfo|.
- (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender;
// Tell the window controller to hide the drop indicator.
- (void)hideIndicator;
@end // @interface URLDropTargetHandler(Private)
@implementation URLDropTargetHandler
- (id)initWithView:(NSView*)view {
if ((self = [super init])) {
view_ = view;
[view_ registerForDraggedTypes:
[NSArray arrayWithObjects:kWebURLsWithTitlesPboardType,
NSURLPboardType,
NSStringPboardType,
NSFilenamesPboardType,
nil]];
}
return self;
}
// The following four methods implement parts of the |NSDraggingDestination|
// protocol, which the owner should "forward" to its |URLDropTargetHandler|
// (us).
- (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender {
return [self getDragOperation:sender];
}
- (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender {
NSDragOperation dragOp = [self getDragOperation:sender];
if (dragOp == NSDragOperationCopy) {
// Just tell the window controller to update the indicator.
[[self windowController] indicateDropURLsAt:[sender draggingLocation]];
}
return dragOp;
}
- (void)draggingExited:(id<NSDraggingInfo>)sender {
[self hideIndicator];
}
- (BOOL)performDragOperation:(id<NSDraggingInfo>)sender {
[self hideIndicator];
NSPasteboard* pboard = [sender draggingPasteboard];
if ([pboard containsURLData]) {
NSArray* urls = nil;
NSArray* titles; // discarded
[pboard getURLs:&urls andTitles:&titles];
if ([urls count]) {
// Tell the window controller about the dropped URL(s).
[[self windowController] dropURLs:urls at:[sender draggingLocation]];
return YES;
}
}
return NO;
}
@end // @implementation URLDropTargetHandler
@implementation URLDropTargetHandler(Private)
- (id<URLDropTargetWindowController>)windowController {
id<URLDropTargetWindowController> controller =
[[view_ window] windowController];
DCHECK([(id)controller conformsToProtocol:
@protocol(URLDropTargetWindowController)]);
return controller;
}
- (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender {
// Only allow the copy operation.
return [sender draggingSourceOperationMask] & NSDragOperationCopy;
}
- (void)hideIndicator {
[[self windowController] hideDropURLsIndicator];
}
@end // @implementation URLDropTargetHandler(Private)
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