blob: 8ae332ed6e04af3afc1af8a9567577d865080126 (
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
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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
// Copyright 2013 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.
#include "content/browser/theme_helper_mac.h"
#import <Cocoa/Cocoa.h>
#include "base/command_line.h"
#include "base/mac/mac_util.h"
#include "base/mac/sdk_forward_declarations.h"
#include "base/strings/sys_string_conversions.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/common/view_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
using content::RenderProcessHost;
using content::RenderProcessHostImpl;
using content::ThemeHelperMac;
namespace {
blink::WebScrollbarButtonsPlacement GetButtonPlacement() {
NSString* scrollbar_variant = [[NSUserDefaults standardUserDefaults]
objectForKey:@"AppleScrollBarVariant"];
if ([scrollbar_variant isEqualToString:@"Single"])
return blink::WebScrollbarButtonsPlacementSingle;
else if ([scrollbar_variant isEqualToString:@"DoubleMin"])
return blink::WebScrollbarButtonsPlacementDoubleStart;
else if ([scrollbar_variant isEqualToString:@"DoubleBoth"])
return blink::WebScrollbarButtonsPlacementDoubleBoth;
else
return blink::WebScrollbarButtonsPlacementDoubleEnd;
}
void FillScrollbarThemeParams(ViewMsg_UpdateScrollbarTheme_Params* params) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
[defaults synchronize];
params->initial_button_delay =
[defaults floatForKey:@"NSScrollerButtonDelay"];
params->autoscroll_button_delay =
[defaults floatForKey:@"NSScrollerButtonPeriod"];
params->jump_on_track_click =
[defaults boolForKey:@"AppleScrollerPagingBehavior"];
params->preferred_scroller_style =
ThemeHelperMac::GetPreferredScrollerStyle();
params->button_placement = GetButtonPlacement();
}
ViewMsg_SystemColorsChanged* CreateSystemColorsChangedMessage() {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
[defaults synchronize];
return new ViewMsg_SystemColorsChanged(
[[defaults stringForKey:@"AppleAquaColorVariant"] intValue],
base::SysNSStringToUTF8(
[defaults stringForKey:@"AppleHighlightedTextColor"]),
base::SysNSStringToUTF8(
[defaults stringForKey:@"AppleHighlightColor"]));
}
} // namespace
@interface ScrollbarPrefsObserver : NSObject
+ (void)registerAsObserver;
+ (void)appearancePrefsChanged:(NSNotification*)notification;
+ (void)behaviorPrefsChanged:(NSNotification*)notification;
+ (void)notifyPrefsChangedWithRedraw:(BOOL)redraw;
@end
@implementation ScrollbarPrefsObserver
+ (void)registerAsObserver {
NSDistributedNotificationCenter* distributedCenter =
[NSDistributedNotificationCenter defaultCenter];
[distributedCenter addObserver:self
selector:@selector(appearancePrefsChanged:)
name:@"AppleAquaScrollBarVariantChanged"
object:nil
suspensionBehavior:
NSNotificationSuspensionBehaviorDeliverImmediately];
[distributedCenter addObserver:self
selector:@selector(behaviorPrefsChanged:)
name:@"AppleNoRedisplayAppearancePreferenceChanged"
object:nil
suspensionBehavior:NSNotificationSuspensionBehaviorCoalesce];
if (base::mac::IsOSMountainLionOrLater()) {
[distributedCenter addObserver:self
selector:@selector(behaviorPrefsChanged:)
name:@"NSScrollAnimationEnabled"
object:nil
suspensionBehavior:NSNotificationSuspensionBehaviorCoalesce];
} else {
// Register for < 10.8
[distributedCenter addObserver:self
selector:@selector(behaviorPrefsChanged:)
name:@"AppleScrollAnimationEnabled"
object:nil
suspensionBehavior:NSNotificationSuspensionBehaviorCoalesce];
}
[distributedCenter addObserver:self
selector:@selector(appearancePrefsChanged:)
name:@"AppleScrollBarVariant"
object:nil
suspensionBehavior:
NSNotificationSuspensionBehaviorDeliverImmediately];
// In single-process mode, renderers will catch these notifications
// themselves and listening for them here may trigger the DCHECK in Observe().
if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kSingleProcess)) {
NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
if ([NSScroller respondsToSelector:@selector(preferredScrollerStyle)]) {
[center addObserver:self
selector:@selector(behaviorPrefsChanged:)
name:NSPreferredScrollerStyleDidChangeNotification
object:nil];
}
[center addObserver:self
selector:@selector(systemColorsChanged:)
name:NSSystemColorsDidChangeNotification
object:nil];
}
}
+ (void)appearancePrefsChanged:(NSNotification*)notification {
[self notifyPrefsChangedWithRedraw:YES];
}
+ (void)behaviorPrefsChanged:(NSNotification*)notification {
[self notifyPrefsChangedWithRedraw:NO];
}
+ (void)systemColorsChanged:(NSNotification*)notification {
for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
!it.IsAtEnd();
it.Advance()) {
it.GetCurrentValue()->Send(CreateSystemColorsChangedMessage());
}
}
+ (void)notifyPrefsChangedWithRedraw:(BOOL)redraw {
ViewMsg_UpdateScrollbarTheme_Params params;
FillScrollbarThemeParams(¶ms);
params.redraw = redraw;
for (RenderProcessHost::iterator it(RenderProcessHost::AllHostsIterator());
!it.IsAtEnd();
it.Advance()) {
RenderProcessHostImpl* rphi =
static_cast<RenderProcessHostImpl*>(it.GetCurrentValue());
rphi->RecomputeAndUpdateWebKitPreferences();
rphi->Send(new ViewMsg_UpdateScrollbarTheme(params));
}
}
@end
namespace content {
// static
ThemeHelperMac* ThemeHelperMac::GetInstance() {
return base::Singleton<ThemeHelperMac,
base::LeakySingletonTraits<ThemeHelperMac>>::get();
}
// static
blink::ScrollerStyle ThemeHelperMac::GetPreferredScrollerStyle() {
if (![NSScroller respondsToSelector:@selector(preferredScrollerStyle)])
return blink::ScrollerStyleLegacy;
return static_cast<blink::ScrollerStyle>([NSScroller preferredScrollerStyle]);
}
ThemeHelperMac::ThemeHelperMac() {
[ScrollbarPrefsObserver registerAsObserver];
registrar_.Add(this,
NOTIFICATION_RENDERER_PROCESS_CREATED,
NotificationService::AllSources());
}
ThemeHelperMac::~ThemeHelperMac() {
}
void ThemeHelperMac::Observe(int type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK_EQ(NOTIFICATION_RENDERER_PROCESS_CREATED, type);
// When a new RenderProcess is created, send it the initial preference
// parameters.
ViewMsg_UpdateScrollbarTheme_Params params;
FillScrollbarThemeParams(¶ms);
params.redraw = false;
RenderProcessHostImpl* rphi =
Source<content::RenderProcessHostImpl>(source).ptr();
rphi->RecomputeAndUpdateWebKitPreferences();
rphi->Send(new ViewMsg_UpdateScrollbarTheme(params));
rphi->Send(CreateSystemColorsChangedMessage());
}
} // namespace content
|
