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
|
// 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 "chrome/browser/ui/search/instant_page.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/ui/search/search_model.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "chrome/common/render_messages.h"
#include "chrome/common/url_constants.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/frame_navigate_params.h"
InstantPage::Delegate::~Delegate() {
}
InstantPage::~InstantPage() {
if (contents())
SearchTabHelper::FromWebContents(contents())->model()->RemoveObserver(this);
}
bool InstantPage::supports_instant() const {
return contents() ?
SearchTabHelper::FromWebContents(contents())->SupportsInstant() : false;
}
const std::string& InstantPage::instant_url() const {
return instant_url_;
}
bool InstantPage::IsLocal() const {
return contents() &&
contents()->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
}
InstantPage::InstantPage(Delegate* delegate, const std::string& instant_url,
Profile* profile, bool is_incognito)
: profile_(profile),
delegate_(delegate),
instant_url_(instant_url),
is_incognito_(is_incognito) {
}
void InstantPage::SetContents(content::WebContents* web_contents) {
ClearContents();
if (!web_contents)
return;
Observe(web_contents);
SearchModel* model = SearchTabHelper::FromWebContents(contents())->model();
model->AddObserver(this);
// Already know whether the page supports instant.
if (model->instant_support() != INSTANT_SUPPORT_UNKNOWN)
InstantSupportDetermined(model->instant_support() == INSTANT_SUPPORT_YES);
}
bool InstantPage::ShouldProcessAboutToNavigateMainFrame() {
return false;
}
void InstantPage::DidCommitProvisionalLoadForFrame(
content::RenderFrameHost* render_frame_host,
const GURL& url,
content::PageTransition /* transition_type */) {
if (!render_frame_host->GetParent() &&
ShouldProcessAboutToNavigateMainFrame())
delegate_->InstantPageAboutToNavigateMainFrame(contents(), url);
}
void InstantPage::ModelChanged(const SearchModel::State& old_state,
const SearchModel::State& new_state) {
if (old_state.instant_support != new_state.instant_support)
InstantSupportDetermined(new_state.instant_support == INSTANT_SUPPORT_YES);
}
void InstantPage::InstantSupportDetermined(bool supports_instant) {
delegate_->InstantSupportDetermined(contents(), supports_instant);
// If the page doesn't support Instant, stop listening to it.
if (!supports_instant)
ClearContents();
}
void InstantPage::ClearContents() {
if (contents())
SearchTabHelper::FromWebContents(contents())->model()->RemoveObserver(this);
Observe(NULL);
}
|
