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
|
// Copyright 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/search/instant_controller.h"
#include <stddef.h>
#include <utility>
#include "base/location.h"
#include "base/strings/stringprintf.h"
#include "base/threading/thread_task_runner_handle.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/instant_service.h"
#include "chrome/browser/search/instant_service_factory.h"
#include "chrome/browser/ui/browser_instant_controller.h"
#include "content/public/browser/web_contents.h"
#include "url/gurl.h"
namespace {
bool IsContentsFrom(const InstantTab* page,
const content::WebContents* contents) {
return page && (page->web_contents() == contents);
}
} // namespace
InstantController::InstantController(BrowserInstantController* browser)
: browser_(browser) {
}
InstantController::~InstantController() {
}
void InstantController::SearchModeChanged(const SearchMode& old_mode,
const SearchMode& new_mode) {
LogDebugEvent(base::StringPrintf(
"SearchModeChanged: [origin:mode] %d:%d to %d:%d", old_mode.origin,
old_mode.mode, new_mode.origin, new_mode.mode));
search_mode_ = new_mode;
ResetInstantTab();
}
void InstantController::ActiveTabChanged() {
LogDebugEvent("ActiveTabChanged");
ResetInstantTab();
}
void InstantController::LogDebugEvent(const std::string& info) const {
DVLOG(1) << info;
debug_events_.push_front(std::make_pair(
base::Time::Now().ToInternalValue(), info));
static const size_t kMaxDebugEventSize = 2000;
if (debug_events_.size() > kMaxDebugEventSize)
debug_events_.pop_back();
}
void InstantController::ClearDebugEvents() {
debug_events_.clear();
}
void InstantController::InstantSupportChanged(
InstantSupportState instant_support) {
// Handle INSTANT_SUPPORT_YES here because InstantTab is not hooked up to the
// active tab. Search model changed listener in InstantTab will handle other
// cases.
if (instant_support != INSTANT_SUPPORT_YES)
return;
ResetInstantTab();
}
void InstantController::InstantSupportDetermined(
const content::WebContents* contents,
bool supports_instant) {
DCHECK(IsContentsFrom(instant_tab_.get(), contents));
if (!supports_instant) {
base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE,
instant_tab_.release());
}
}
void InstantController::InstantTabAboutToNavigateMainFrame(
const content::WebContents* contents,
const GURL& url) {
DCHECK(IsContentsFrom(instant_tab_.get(), contents));
// The Instant tab navigated. Send it the data it needs to display
// properly.
UpdateInfoForInstantTab();
}
void InstantController::ResetInstantTab() {
if (!search_mode_.is_origin_default()) {
content::WebContents* active_tab = browser_->GetActiveWebContents();
if (!instant_tab_ || active_tab != instant_tab_->web_contents()) {
instant_tab_.reset(new InstantTab(this, active_tab));
instant_tab_->Init();
UpdateInfoForInstantTab();
}
} else {
instant_tab_.reset();
}
}
void InstantController::UpdateInfoForInstantTab() {
if (instant_tab_) {
// Update theme details.
InstantService* instant_service = GetInstantService();
if (instant_service) {
instant_service->UpdateThemeInfo();
instant_service->UpdateMostVisitedItemsInfo();
}
}
}
InstantService* InstantController::GetInstantService() const {
return InstantServiceFactory::GetForProfile(browser_->profile());
}
|
