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// Copyright (c) 2010 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/chromeos/offline/offline_load_page.h"
#include "app/l10n_util.h"
#include "app/resource_bundle.h"
#include "base/i18n/rtl.h"
#include "base/metrics/histogram.h"
#include "base/string_piece.h"
#include "base/stringprintf.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/extensions/extensions_service.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/tab_contents/navigation_controller.h"
#include "chrome/browser/tab_contents/navigation_entry.h"
#include "chrome/browser/tab_contents/tab_contents.h"
#include "chrome/browser/tab_contents/tab_util.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/jstemplate_builder.h"
#include "chrome/common/notification_type.h"
#include "chrome/common/url_constants.h"
#include "grit/browser_resources.h"
#include "grit/generated_resources.h"
namespace {
// Maximum time to show a blank page.
const int kMaxBlankPeriod = 3000;
// This is a workaround for crosbug.com/8285.
// Chrome sometimes fails to load the page silently
// when the load is requested right after network is
// restored. This happens more often in HTTPS than HTTP.
// This should be removed once the root cause is fixed.
const int kSecureDelayMs = 1000;
const int kDefaultDelayMs = 300;
// A utility function to set the dictionary's value given by |resource_id|.
void SetString(DictionaryValue* strings, const char* name, int resource_id) {
strings->SetString(name, l10n_util::GetStringUTF16(resource_id));
}
} // namespace
namespace chromeos {
// static
void OfflineLoadPage::Show(int process_host_id, int render_view_id,
const GURL& url, Delegate* delegate) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (NetworkStateNotifier::is_connected()) {
// Check again in UI thread and proceed if it's connected.
delegate->OnBlockingPageComplete(true);
} else {
TabContents* tab_contents =
tab_util::GetTabContentsByID(process_host_id, render_view_id);
DCHECK(tab_contents);
(new OfflineLoadPage(tab_contents, url, delegate))->Show();
}
}
OfflineLoadPage::OfflineLoadPage(TabContents* tab_contents,
const GURL& url,
Delegate* delegate)
: InterstitialPage(tab_contents, true, url),
delegate_(delegate),
proceeded_(false),
ALLOW_THIS_IN_INITIALIZER_LIST(method_factory_(this)),
in_test_(false) {
registrar_.Add(this, NotificationType::NETWORK_STATE_CHANGED,
NotificationService::AllSources());
}
std::string OfflineLoadPage::GetHTMLContents() {
DictionaryValue strings;
// Toggle Cancel button.
strings.SetString("display_cancel",
tab()->controller().CanGoBack() ? "inline" : "none");
int64 time_to_wait = std::max(
static_cast<int64>(0),
kMaxBlankPeriod -
NetworkStateNotifier::GetOfflineDuration().InMilliseconds());
// Set the timeout to show the page.
strings.SetInteger("timeToWait", static_cast<int>(time_to_wait));
// Button labels
SetString(&strings, "load_button", IDS_OFFLINE_LOAD_BUTTON);
SetString(&strings, "cancel_button", IDS_OFFLINE_CANCEL_BUTTON);
SetString(&strings, "heading", IDS_OFFLINE_LOAD_HEADLINE);
SetString(&strings, "network_settings", IDS_OFFLINE_NETWORK_SETTINGS);
bool rtl = base::i18n::IsRTL();
strings.SetString("textdirection", rtl ? "rtl" : "ltr");
string16 failed_url(ASCIIToUTF16(url().spec()));
if (rtl)
base::i18n::WrapStringWithLTRFormatting(&failed_url);
strings.SetString("url", failed_url);
// The offline page for app has icons and slightly different message.
Profile* profile = tab()->profile();
DCHECK(profile);
const Extension* extension = NULL;
ExtensionsService* extensions_service = profile->GetExtensionsService();
// Extension service does not exist in test.
if (extensions_service)
extension = extensions_service->GetExtensionByWebExtent(url());
if (extension)
GetAppOfflineStrings(extension, failed_url, &strings);
else
GetNormalOfflineStrings(failed_url, &strings);
base::StringPiece html(
ResourceBundle::GetSharedInstance().GetRawDataResource(
IDR_OFFLINE_LOAD_HTML));
return jstemplate_builder::GetI18nTemplateHtml(html, &strings);
}
void OfflineLoadPage::GetAppOfflineStrings(
const Extension* app,
const string16& failed_url,
DictionaryValue* strings) const {
strings->SetString("title", app->name());
GURL icon_url = app->GetIconURL(Extension::EXTENSION_ICON_LARGE,
ExtensionIconSet::MATCH_EXACTLY);
if (icon_url.is_empty()) {
strings->SetString("display_icon", "none");
strings->SetString("icon", string16());
} else {
// Default icon is not accessible from interstitial page.
// TODO(oshima): Figure out how to use default icon.
strings->SetString("display_icon", "block");
strings->SetString("icon", icon_url.spec());
}
strings->SetString(
"msg",
l10n_util::GetStringFUTF16(IDS_APP_OFFLINE_LOAD_DESCRIPTION,
failed_url));
}
void OfflineLoadPage::GetNormalOfflineStrings(
const string16& failed_url, DictionaryValue* strings) const {
strings->SetString("title", tab()->GetTitle());
// No icon for normal web site.
strings->SetString("display_icon", "none");
strings->SetString("icon", string16());
strings->SetString(
"msg",
l10n_util::GetStringFUTF16(IDS_SITE_OFFLINE_LOAD_DESCRIPTION,
failed_url));
}
void OfflineLoadPage::CommandReceived(const std::string& cmd) {
std::string command(cmd);
// The Jasonified response has quotes, remove them.
if (command.length() > 1 && command[0] == '"') {
command = command.substr(1, command.length() - 2);
}
// TODO(oshima): record action for metrics.
if (command == "proceed") {
Proceed();
} else if (command == "dontproceed") {
DontProceed();
} else if (command == "open_network_settings") {
Browser* browser = BrowserList::GetLastActive();
DCHECK(browser);
browser->ShowOptionsTab(chrome::kInternetOptionsSubPage);
} else {
LOG(WARNING) << "Unknown command:" << cmd;
}
}
void OfflineLoadPage::Proceed() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
int delay = url().SchemeIsSecure() ? kSecureDelayMs : kDefaultDelayMs;
if (in_test_)
delay = 0;
proceeded_ = true;
BrowserThread::PostDelayedTask(
BrowserThread::UI, FROM_HERE,
method_factory_.NewRunnableMethod(&OfflineLoadPage::DoProceed),
delay);
}
void OfflineLoadPage::DoProceed() {
delegate_->OnBlockingPageComplete(true);
InterstitialPage::Proceed();
}
void OfflineLoadPage::DontProceed() {
// Inogre if it's already proceeded.
if (proceeded_)
return;
delegate_->OnBlockingPageComplete(false);
InterstitialPage::DontProceed();
}
void OfflineLoadPage::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type.value == NotificationType::NETWORK_STATE_CHANGED) {
chromeos::NetworkStateDetails* state_details =
Details<chromeos::NetworkStateDetails>(details).ptr();
DVLOG(1) << "NetworkStateChanaged notification received: state="
<< state_details->state();
if (state_details->state() ==
chromeos::NetworkStateDetails::CONNECTED) {
registrar_.Remove(this, NotificationType::NETWORK_STATE_CHANGED,
NotificationService::AllSources());
Proceed();
}
} else {
InterstitialPage::Observe(type, source, details);
}
}
} // namespace chromeos
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