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
|
// 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.
#include "chrome/browser/ui/webui/ntp/recently_closed_tabs_handler.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sessions/tab_restore_service_delegate.h"
#include "chrome/browser/sessions/tab_restore_service_factory.h"
#include "chrome/browser/ui/host_desktop.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "ui/base/webui/web_ui_util.h"
namespace {
void TabToValue(const TabRestoreService::Tab& tab,
base::DictionaryValue* dictionary) {
const sessions::SerializedNavigationEntry& current_navigation =
tab.navigations.at(tab.current_navigation_index);
NewTabUI::SetUrlTitleAndDirection(dictionary, current_navigation.title(),
current_navigation.virtual_url());
dictionary->SetString("type", "tab");
dictionary->SetDouble("timestamp", tab.timestamp.ToDoubleT());
}
void WindowToValue(const TabRestoreService::Window& window,
base::DictionaryValue* dictionary) {
DCHECK(!window.tabs.empty());
scoped_ptr<base::ListValue> tab_values(new base::ListValue());
for (size_t i = 0; i < window.tabs.size(); ++i) {
base::DictionaryValue* tab_value = new base::DictionaryValue();
TabToValue(window.tabs[i], tab_value);
tab_values->Append(tab_value);
}
dictionary->SetString("type", "window");
dictionary->SetDouble("timestamp", window.timestamp.ToDoubleT());
dictionary->Set("tabs", tab_values.release());
}
} // namespace
void RecentlyClosedTabsHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback("getRecentlyClosedTabs",
base::Bind(&RecentlyClosedTabsHandler::HandleGetRecentlyClosedTabs,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("reopenTab",
base::Bind(&RecentlyClosedTabsHandler::HandleReopenTab,
base::Unretained(this)));
web_ui()->RegisterMessageCallback("clearRecentlyClosed",
base::Bind(&RecentlyClosedTabsHandler::HandleClearRecentlyClosed,
base::Unretained(this)));
}
RecentlyClosedTabsHandler::~RecentlyClosedTabsHandler() {
if (tab_restore_service_)
tab_restore_service_->RemoveObserver(this);
}
void RecentlyClosedTabsHandler::HandleReopenTab(const base::ListValue* args) {
if (!tab_restore_service_)
return;
double session_to_restore = 0.0;
CHECK(args->GetDouble(0, &session_to_restore));
double index = -1.0;
CHECK(args->GetDouble(1, &index));
// There are actually less than 20 restore tab items displayed in the UI.
UMA_HISTOGRAM_ENUMERATION("NewTabPage.SessionRestore",
static_cast<int>(index), 20);
TabRestoreServiceDelegate* delegate =
TabRestoreServiceDelegate::FindDelegateForWebContents(
web_ui()->GetWebContents());
if (!delegate)
return;
chrome::HostDesktopType host_desktop_type =
chrome::GetHostDesktopTypeForNativeView(
web_ui()->GetWebContents()->GetNativeView());
WindowOpenDisposition disposition = webui::GetDispositionFromClick(args, 2);
tab_restore_service_->RestoreEntryById(delegate,
static_cast<int>(session_to_restore),
host_desktop_type,
disposition);
// The current tab has been nuked at this point; don't touch any member
// variables.
}
void RecentlyClosedTabsHandler::HandleClearRecentlyClosed(
const base::ListValue* args) {
EnsureTabRestoreService();
if (tab_restore_service_)
tab_restore_service_->ClearEntries();
}
void RecentlyClosedTabsHandler::HandleGetRecentlyClosedTabs(
const base::ListValue* args) {
EnsureTabRestoreService();
if (tab_restore_service_)
TabRestoreServiceChanged(tab_restore_service_);
}
void RecentlyClosedTabsHandler::TabRestoreServiceChanged(
TabRestoreService* service) {
base::ListValue list_value;
const int max_count = 10;
int added_count = 0;
// We filter the list of recently closed to only show 'interesting' entries,
// where an interesting entry is either a closed window or a closed tab
// whose selected navigation is not the new tab ui.
for (TabRestoreService::Entries::const_iterator it =
service->entries().begin();
it != service->entries().end() && added_count < max_count; ++it) {
TabRestoreService::Entry* entry = *it;
scoped_ptr<base::DictionaryValue> entry_dict(new base::DictionaryValue());
if (entry->type == TabRestoreService::TAB) {
TabToValue(*static_cast<TabRestoreService::Tab*>(entry),
entry_dict.get());
} else {
DCHECK_EQ(entry->type, TabRestoreService::WINDOW);
WindowToValue(*static_cast<TabRestoreService::Window*>(entry),
entry_dict.get());
}
entry_dict->SetInteger("sessionId", entry->id);
list_value.Append(entry_dict.release());
++added_count;
}
web_ui()->CallJavascriptFunction("ntp.setRecentlyClosedTabs", list_value);
}
void RecentlyClosedTabsHandler::TabRestoreServiceDestroyed(
TabRestoreService* service) {
tab_restore_service_ = NULL;
}
void RecentlyClosedTabsHandler::EnsureTabRestoreService() {
if (tab_restore_service_)
return;
tab_restore_service_ =
TabRestoreServiceFactory::GetForProfile(Profile::FromWebUI(web_ui()));
// TabRestoreServiceFactory::GetForProfile() can return NULL (i.e., when in
// Off the Record mode)
if (tab_restore_service_) {
// This does nothing if the tabs have already been loaded or they
// shouldn't be loaded.
tab_restore_service_->LoadTabsFromLastSession();
tab_restore_service_->AddObserver(this);
}
}
|
