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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_ntp.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "content/public/browser/navigation_details.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "googleurl/src/gurl.h"
namespace {
// Helper class for logging data from the NTP. Attached to each InstantNTP
// instance.
class NTPLoggingUserData
: public content::WebContentsObserver,
public content::WebContentsUserData<NTPLoggingUserData> {
public:
virtual ~NTPLoggingUserData() {}
// Called each time the mouse hovers over an iframe or title.
void increment_number_of_mouseovers() {
number_of_mouseovers_++;
}
void set_instant_url(const GURL& url) {
instant_url_ = url;
}
// Logs total number of mouseovers per NTP session to UMA histogram. Called
// when an NTP tab is about to be deactivated (be it by switching tabs, losing
// focus or closing the tab/shutting down Chrome) or when the user navigates
// to a URL.
void EmitMouseoverCount() {
UMA_HISTOGRAM_COUNTS("NewTabPage.NumberOfMouseOvers",
number_of_mouseovers_);
number_of_mouseovers_ = 0;
}
// content::WebContentsObserver override
virtual void NavigationEntryCommitted(
const content::LoadCommittedDetails& load_details) OVERRIDE {
if (!load_details.previous_url.is_valid())
return;
if (chrome::MatchesOriginAndPath(instant_url_, load_details.previous_url))
EmitMouseoverCount();
}
private:
explicit NTPLoggingUserData(content::WebContents* contents)
: content::WebContentsObserver(contents),
number_of_mouseovers_(0) {}
friend class content::WebContentsUserData<NTPLoggingUserData>;
int number_of_mouseovers_;
GURL instant_url_;
DISALLOW_COPY_AND_ASSIGN(NTPLoggingUserData);
};
} // namespace
DEFINE_WEB_CONTENTS_USER_DATA_KEY(NTPLoggingUserData);
InstantNTP::InstantNTP(InstantPage::Delegate* delegate,
const std::string& instant_url,
bool is_incognito)
: InstantPage(delegate, instant_url, is_incognito),
loader_(this) {
DCHECK(delegate);
}
InstantNTP::~InstantNTP() {
}
void InstantNTP::InitContents(Profile* profile,
const content::WebContents* active_tab,
const base::Closure& on_stale_callback) {
GURL instantNTP_url(instant_url());
loader_.Init(instantNTP_url, profile, active_tab, on_stale_callback);
SetContents(loader_.contents());
content::WebContents* content = contents();
SearchTabHelper::FromWebContents(content)->InitForPreloadedNTP();
NTPLoggingUserData::CreateForWebContents(content);
NTPLoggingUserData::FromWebContents(content)->set_instant_url(instantNTP_url);
loader_.Load();
}
scoped_ptr<content::WebContents> InstantNTP::ReleaseContents() {
SetContents(NULL);
return loader_.ReleaseContents();
}
void InstantNTP::RenderViewCreated(content::RenderViewHost* render_view_host) {
delegate()->InstantPageRenderViewCreated(contents());
}
void InstantNTP::RenderProcessGone(base::TerminationStatus /* status */) {
delegate()->InstantPageRenderProcessGone(contents());
}
// static
void InstantNTP::CountMouseover(content::WebContents* contents) {
NTPLoggingUserData* data = NTPLoggingUserData::FromWebContents(contents);
if (data)
data->increment_number_of_mouseovers();
}
// static
void InstantNTP::EmitMouseoverCount(content::WebContents* contents) {
NTPLoggingUserData* data = NTPLoggingUserData::FromWebContents(contents);
if (data)
data->EmitMouseoverCount();
}
void InstantNTP::OnSwappedContents() {
SetContents(loader_.contents());
}
void InstantNTP::OnFocus() {
NOTREACHED();
}
void InstantNTP::OnMouseDown() {
NOTREACHED();
}
void InstantNTP::OnMouseUp() {
NOTREACHED();
}
content::WebContents* InstantNTP::OpenURLFromTab(
content::WebContents* source,
const content::OpenURLParams& params) {
return NULL;
}
void InstantNTP::LoadCompletedMainFrame() {
}
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