| // Copyright (c) 2012 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 <memory> |
| |
| #include "base/strings/string16.h" |
| #include "content/common/content_export.h" |
| #include "content/public/common/drop_data.h" |
| |
| namespace content { |
| class RenderViewHost; |
| class WebContentsImpl; |
| class WebDragDestDelegate; |
| } |
| |
| // A typedef for a RenderViewHost used for comparison purposes only. |
| typedef content::RenderViewHost* RenderViewHostIdentifier; |
| |
| // A class that handles tracking and event processing for a drag and drop |
| // over the content area. Assumes something else initiates the drag, this is |
| // only for processing during a drag. |
| CONTENT_EXPORT |
| @interface WebDragDest : NSObject { |
| @private |
| // Our associated WebContentsImpl. Weak reference. |
| content::WebContentsImpl* webContents_; |
| |
| // Delegate; weak. |
| content::WebDragDestDelegate* delegate_; |
| |
| // Updated asynchronously during a drag to tell us whether or not we should |
| // allow the drop. |
| NSDragOperation currentOperation_; |
| |
| // Keep track of the render view host we're dragging over. If it changes |
| // during a drag, we need to re-send the DragEnter message. |
| RenderViewHostIdentifier currentRVH_; |
| |
| // The data for the current drag, or NULL if none is in progress. |
| std::unique_ptr<content::DropData> dropData_; |
| |
| // True if the drag has been canceled. |
| bool canceled_; |
| } |
| |
| // |contents| is the WebContentsImpl representing this tab, used to communicate |
| // drag&drop messages to WebCore and handle navigation on a successful drop |
| // (if necessary). |
| - (id)initWithWebContentsImpl:(content::WebContentsImpl*)contents; |
| |
| - (content::DropData*)currentDropData; |
| |
| - (void)setDragDelegate:(content::WebDragDestDelegate*)delegate; |
| |
| // Sets the current operation negotiated by the source and destination, |
| // which determines whether or not we should allow the drop. Takes effect the |
| // next time |-draggingUpdated:| is called. |
| - (void)setCurrentOperation:(NSDragOperation)operation; |
| |
| // Messages to send during the tracking of a drag, ususally upon receiving |
| // calls from the view system. Communicates the drag messages to WebCore. |
| - (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)info |
| view:(NSView*)view; |
| - (void)draggingExited:(id<NSDraggingInfo>)info; |
| - (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)info |
| view:(NSView*)view; |
| - (BOOL)performDragOperation:(id<NSDraggingInfo>)info |
| view:(NSView*)view; |
| |
| @end |
| |
| // Public use only for unit tests. |
| @interface WebDragDest(Testing) |
| // Given |data|, which should not be nil, fill it in using the contents of the |
| // given pasteboard. |
| - (void)populateDropData:(content::DropData*)data |
| fromPasteboard:(NSPasteboard*)pboard; |
| // Given a point in window coordinates and a view in that window, return a |
| // flipped point in the coordinate system of |view|. |
| - (NSPoint)flipWindowPointToView:(const NSPoint&)windowPoint |
| view:(NSView*)view; |
| // Given a point in window coordinates and a view in that window, return a |
| // flipped point in screen coordinates. |
| - (NSPoint)flipWindowPointToScreen:(const NSPoint&)windowPoint |
| view:(NSView*)view; |
| @end |