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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ | 5 #ifndef CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ |
| 6 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ | 6 #define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #import <Cocoa/Cocoa.h> | 9 #import <Cocoa/Cocoa.h> |
| 10 | 10 |
| 11 // This protocol is used as a delegate for the NSView class used in the | 11 // This protocol is used as a delegate for the NSView class used in the |
| 12 // hierarchy. There are two ways to extend the view: | 12 // hierarchy. There are two ways to extend the view: |
| 13 // - Implement the methods listed in the protocol below. | 13 // - Implement the methods listed in the protocol below. |
| 14 // - Implement any method, and if the view is requested to perform that method | 14 // - Implement any method, and if the view is requested to perform that method |
| 15 // and cannot, the delegate's implementation will be used. | 15 // and cannot, the delegate's implementation will be used. |
| 16 // | 16 // |
| 17 // Like any delegate, it is not retained by the delegator object. The delegator | 17 // Like any Objective-C delegate, it is not retained by the delegator object. |
| 18 // object will call the -viewGone: method when it is going away. | 18 // The delegator object will call the -viewGone: method when it is going away. |
| 19 | 19 |
| 20 @protocol RenderWidgetHostViewMacDelegate | 20 @protocol RenderWidgetHostViewMacDelegate |
| 21 @optional | 21 @optional |
| 22 // Notification that the view is gone. | 22 // Notification that the view is gone. |
| 23 - (void)viewGone:(NSView*)view; | 23 - (void)viewGone:(NSView*)view; |
| 24 | 24 |
| 25 // Handle an event. All incoming key and mouse events flow through this delegate | 25 // Handle an event. All incoming key and mouse events flow through this delegate |
| 26 // method if implemented. Return YES if the event is fully handled, or NO if | 26 // method if implemented. Return YES if the event is fully handled, or NO if |
| 27 // normal processing should take place. | 27 // normal processing should take place. |
| 28 - (BOOL)handleEvent:(NSEvent*)event; | 28 - (BOOL)handleEvent:(NSEvent*)event; |
| 29 | 29 |
| 30 // Notification that a wheel event was unhandled. | 30 // Notification that a wheel event was unhandled. |
| 31 - (void)gotUnhandledWheelEvent; | 31 - (void)gotUnhandledWheelEvent; |
| 32 | 32 |
| 33 // Notification of scroll offset pinning. | 33 // Notification of scroll offset pinning. |
| 34 - (void)scrollOffsetPinnedToLeft:(BOOL)left toRight:(BOOL)right; | 34 - (void)scrollOffsetPinnedToLeft:(BOOL)left toRight:(BOOL)right; |
| 35 | 35 |
| 36 // Notification of whether the view has a horizontal scrollbar. | 36 // Notification of whether the view has a horizontal scrollbar. |
| 37 - (void)setHasHorizontalScrollbar:(BOOL)has_horizontal_scrollbar; | 37 - (void)setHasHorizontalScrollbar:(BOOL)has_horizontal_scrollbar; |
| 38 | 38 |
| 39 // Provides validation of user interface items. If the return value is NO, then | 39 // Provides validation of user interface items. If the return value is NO, then |
| 40 // the delegate is unaware of that item and |valid| is undefined. Otherwise, | 40 // the delegate is unaware of that item and |valid| is undefined. Otherwise, |
| 41 // |valid| contains the validity of the specified item. | 41 // |valid| contains the validity of the specified item. |
| 42 - (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item | 42 - (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item |
| 43 isValidItem:(BOOL*)valid; | 43 isValidItem:(BOOL*)valid; |
| 44 | 44 |
| 45 @end | 45 @end |
| 46 | 46 |
| 47 #endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ | 47 #endif // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_ |
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