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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_CONTROLLER_BASE_H_
#define CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_CONTROLLER_BASE_H_
#include "base/memory/raw_ptr.h"
#include "chrome/browser/ui/exclusive_access/exclusive_access_bubble_type.h"
#include "content/public/browser/web_contents_observer.h"
#include "url/origin.h"
class ExclusiveAccessManager;
namespace content {
class WebContents;
}
// The base class for the different exclusive access controllers like the
// FullscreenController, KeyboardLockController, and PointerLockController which
// controls lifetime for which the resource (screen/mouse-pointer/keyboard) is
// held exclusively.
class ExclusiveAccessControllerBase {
public:
explicit ExclusiveAccessControllerBase(ExclusiveAccessManager* manager);
ExclusiveAccessControllerBase(const ExclusiveAccessControllerBase&) = delete;
ExclusiveAccessControllerBase& operator=(
const ExclusiveAccessControllerBase&) = delete;
virtual ~ExclusiveAccessControllerBase();
virtual url::Origin GetOriginForExclusiveAccessBubble() const;
content::WebContents* exclusive_access_tab() const {
return web_contents_observer_.web_contents();
}
// Functions implemented by derived classes:
// Called when Esc is pressed. Returns true if the event is handled.
virtual bool HandleUserPressedEscape() = 0;
// Called when Esc is held for longer than the press-and-hold duration.
virtual void HandleUserHeldEscape() = 0;
// Called when Esc is released before reaching the press-and-hold duration.
virtual void HandleUserReleasedEscapeEarly() = 0;
// Returns true if the controller requires press-and-hold to exit.
virtual bool RequiresPressAndHoldEscToExit() const = 0;
// Called by Browser in response to call from ExclusiveAccessBubble.
virtual void ExitExclusiveAccessToPreviousState() = 0;
// Called by ExclusiveAccessManager in response to calls from Browser.
virtual void OnTabDeactivated(content::WebContents* web_contents);
virtual void OnTabDetachedFromView(content::WebContents* web_contents);
virtual void OnTabClosing(content::WebContents* web_contents);
protected:
void SetTabWithExclusiveAccess(content::WebContents* tab);
ExclusiveAccessManager* exclusive_access_manager() const { return manager_; }
// Exits exclusive access mode for the tab if currently exclusive.
virtual void ExitExclusiveAccessIfNecessary() = 0;
// Notifies the tab that it has been forced out of exclusive access mode
// if necessary.
virtual void NotifyTabExclusiveAccessLost() = 0;
private:
const raw_ptr<ExclusiveAccessManager> manager_;
class WebContentsObserver : public content::WebContentsObserver {
public:
explicit WebContentsObserver(ExclusiveAccessControllerBase& controller);
// Detect page navigation and exit exclusive access.
void NavigationEntryCommitted(
const content::LoadCommittedDetails& load_details) override;
// Let the controller set the WebContents to be observed.
using content::WebContentsObserver::Observe;
private:
const raw_ref<ExclusiveAccessControllerBase> controller_;
} web_contents_observer_{*this};
};
#endif // CHROME_BROWSER_UI_EXCLUSIVE_ACCESS_EXCLUSIVE_ACCESS_CONTROLLER_BASE_H_
|
