blob: 4e79fcbe2fa1d5964ffd933583a1ebaeeee9bda5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// 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 CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_
#define CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_
#import <Cocoa/Cocoa.h>
// This protocol is used as a delegate for the NSView class used in the
// hierarchy. There are two ways to extend the view:
// - Implement the methods listed in the protocol below.
// - Implement any method, and if the view is requested to perform that method
// and cannot, the delegate's implementation will be used.
//
// Like any Objective-C delegate, it is not retained by the delegator object.
// The delegator object will call the -viewGone: method when it is going away.
@protocol RenderWidgetHostViewMacDelegate
@optional
// Notification that the view is gone.
- (void)viewGone:(NSView*)view;
// Handle an event. All incoming key and mouse events flow through this delegate
// method if implemented. Return YES if the event is fully handled, or NO if
// normal processing should take place.
- (BOOL)handleEvent:(NSEvent*)event;
// Notification that a wheel event was unhandled.
- (void)gotUnhandledWheelEvent;
// Notification of scroll offset pinning.
- (void)scrollOffsetPinnedToLeft:(BOOL)left toRight:(BOOL)right;
// Notification of whether the view has a horizontal scrollbar.
- (void)setHasHorizontalScrollbar:(BOOL)has_horizontal_scrollbar;
// Provides validation of user interface items. If the return value is NO, then
// the delegate is unaware of that item and |valid| is undefined. Otherwise,
// |valid| contains the validity of the specified item.
- (BOOL)validateUserInterfaceItem:(id<NSValidatedUserInterfaceItem>)item
isValidItem:(BOOL*)valid;
@end
#endif // CONTENT_PUBLIC_BROWSER_RENDER_WIDGET_HOST_VIEW_MAC_DELEGATE_H_
|
