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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 <Cocoa/Cocoa.h>
#include "base/scoped_nsobject.h"
#include "base/scoped_ptr.h"
struct WebDropData;
@class TabContentsViewCocoa;
// A class that handles tracking and event processing for a drag and drop
// originating from the content area.
@interface WebDragSource : NSObject {
@private
// Our tab. Weak reference (owns or co-owns us).
TabContentsViewCocoa* contentsView_;
// Our drop data. Should only be initialized once.
scoped_ptr<WebDropData> dropData_;
// Our pasteboard.
scoped_nsobject<NSPasteboard> pasteboard_;
// A mask of the allowed drag operations.
NSDragOperation dragOperationMask_;
}
// Initialize a WebDragSource object for a drag (originating on the given
// contentsView and with the given dropData and pboard). Fill the pasteboard
// with data types appropriate for dropData.
- (id)initWithContentsView:(TabContentsViewCocoa*)contentsView
dropData:(const WebDropData*)dropData
pasteboard:(NSPasteboard*)pboard
dragOperationMask:(NSDragOperation)dragOperationMask;
// Returns a mask of the allowed drag operations.
- (NSDragOperation)draggingSourceOperationMaskForLocal:(BOOL)isLocal;
// Call when asked to do a lazy write to the pasteboard; hook up to
// -pasteboard:provideDataForType: (on the contentsView).
- (void)lazyWriteToPasteboard:(NSPasteboard*)pboard
forType:(NSString*)type;
// Start the drag (on the originally provided contentsView); can do this right
// after -initWithContentsView:....
- (void)startDrag;
// End the drag and clear the pasteboard; hook up to
// -draggedImage:endedAt:operation:.
- (void)endDragAt:(NSPoint)screenPoint
operation:(NSDragOperation)operation;
// Drag moved; hook up to -draggedImage:movedTo:.
- (void)moveDragTo:(NSPoint)screenPoint;
// Call to drag a promised file to the given path (should be called before
// -endDragAt:...); hook up to -namesOfPromisedFilesDroppedAtDestination:.
// Returns the file name (not including path) of the file deposited (or which
// will be deposited).
- (NSString*)dragPromisedFileTo:(NSString*)path;
@end
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