Index: chrome/browser/ui/cocoa/panels/mouse_drag_controller.h |
diff --git a/chrome/browser/ui/cocoa/panels/mouse_drag_controller.h b/chrome/browser/ui/cocoa/panels/mouse_drag_controller.h |
deleted file mode 100644 |
index 4e28238ed329ac09dab4a63ec76626743f8358dc..0000000000000000000000000000000000000000 |
--- a/chrome/browser/ui/cocoa/panels/mouse_drag_controller.h |
+++ /dev/null |
@@ -1,97 +0,0 @@ |
-// 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. |
- |
-#ifndef CHROME_BROWSER_UI_COCOA_PANELS_MOUSE_DRAG_CONTROLLER_H_ |
-#define CHROME_BROWSER_UI_COCOA_PANELS_MOUSE_DRAG_CONTROLLER_H_ |
- |
-#import <Cocoa/Cocoa.h> |
- |
-// When Drag is cancelled by hitting ESC key, we may still receive |
-// the mouseDragged events but should ignore them until the mouse button is |
-// released. Use these simple states to track this condition. |
-enum PanelDragState { |
- PANEL_DRAG_CAN_START, // Mouse key went down, drag may be started. |
- PANEL_DRAG_IN_PROGRESS, |
- PANEL_DRAG_SUPPRESSED // Ignore drag events until PANEL_DRAG_CAN_START. |
-}; |
- |
-@class MouseDragController; |
- |
-@protocol MouseDragControllerClient |
-// Called on initial mouseDown. Followed by dragStarted/dragProgress/dragEnded |
-// (which can be skipped if the drag didn't start) and then by cleanupAfterDrag. |
-- (void)prepareForDrag; |
- |
-// Called wehen drag threshold was exceeded and actual drag should start. |
-// Note that the drag is processed using a local nested message loop. |
-// |initialMouseLocation| is in containing NSWindow's coordinates. |
-- (void)dragStarted:(NSPoint)initialMouseLocation; |
- |
-// Called 0 to multiple times between dragStarted and dragEnded, to report |
-// current mouse location. |mouseLocation| is in window coordinates. |
-- (void)dragProgress:(NSPoint)mouseLocation; |
- |
-- (void)dragEnded:(BOOL)cancelled; |
- |
-// Always complements prepareForDrag. Clients which create a MouseDragController |
-// in their mouseDown may release it in this method. |
-- (void)cleanupAfterDrag; |
-@end |
- |
-// This class encapsulates the mouse drag start/progress/termination logic, |
-// including having a threashold before actually starting a drag and termination |
-// of the drag on ESC, mouseUp and other operations. It also hosts the nested |
-// message loop that is used during the drag operation. |
-// |
-// The client of the controller should be a NSView implementing |
-// MouseDragControllerClient protocol. The client simply delegates mouse events |
-// to the controller, and controller invokes higher-level |
-// dragStarted/dragProgress/dragEnded callbacks on the client. |
-// The controller can be created in initial mouseDown and then released in the |
-// cleanupAfterDrag callback, or it can be preallocated and used across multiple |
-// drag operations. |
-// |
-// The pattern of usage: |
-// Lets say MyView is a NSView <MouseDragControllerClient> |
-// |
-// First, create an instance of MouseDragController and init it: |
-// dragController_.reset([[MouseDragController alloc] initWithClient:self]); |
-// then delegate mouse messages to it: |
-// |
-// - (void)mouseDown:(NSEvent*)event { |
-// if (needToStartADrag(event)) |
-// [dragController_ mouseDown:event]; |
-// } |
-// |
-// - (void)mouseDragged:(NSEvent*)event { |
-// [dragController_ mouseDragged:event]; |
-// } |
-// |
-// - (void)mouseUp:(NSEvent*)event { |
-// [dragController_ mouseUp:event]; |
-// } |
-// |
-// That's it. When user starts a drag, the client's callbacks will be invoked. |
- |
-@interface MouseDragController : NSObject { |
- @private |
- NSPoint initialMouseLocation_; // In NSWindow's coordinate system. |
- PanelDragState dragState_; |
- NSView<MouseDragControllerClient>* client_; // Weak, owns this object. |
-}; |
- |
-- (MouseDragController*) |
- initWithClient:(NSView<MouseDragControllerClient>*)client; |
- |
-// Accessors. |
-- (NSView<MouseDragControllerClient>*)client; |
-- (NSPoint)initialMouseLocation; |
- |
-// These should be called from corresponding methods of hosting NSView. |
-- (void)mouseDown:(NSEvent*)event; |
-- (void)mouseDragged:(NSEvent*)event; |
-- (void)mouseUp:(NSEvent*)event; |
-@end |
- |
-#endif // CHROME_BROWSER_UI_COCOA_PANELS_MOUSE_DRAG_CONTROLLER_H_ |