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// 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/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 (web_contents()) {
SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
this);
}
}
bool InstantPage::supports_instant() const {
return web_contents() &&
SearchTabHelper::FromWebContents(web_contents())->SupportsInstant();
}
const std::string& InstantPage::instant_url() const {
return instant_url_;
}
bool InstantPage::IsLocal() const {
return web_contents() &&
web_contents()->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
}
InstantPage::InstantPage(Delegate* delegate,
const std::string& instant_url,
Profile* profile)
: profile_(profile),
delegate_(delegate),
instant_url_(instant_url) {
}
void InstantPage::SetContents(content::WebContents* new_web_contents) {
ClearContents();
if (!new_web_contents)
return;
Observe(new_web_contents);
SearchModel* model =
SearchTabHelper::FromWebContents(web_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,
ui::PageTransition /* transition_type */) {
if (!render_frame_host->GetParent() &&
ShouldProcessAboutToNavigateMainFrame())
delegate_->InstantPageAboutToNavigateMainFrame(web_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(web_contents(), supports_instant);
// If the page doesn't support Instant, stop listening to it.
if (!supports_instant)
ClearContents();
}
void InstantPage::ClearContents() {
if (web_contents()) {
SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
this);
}
Observe(NULL);
}
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