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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "chrome/browser/alternate_nav_url_fetcher.h"
#include "chrome/browser/navigation_controller.h"
#include "chrome/browser/navigation_entry.h"
#include "chrome/browser/views/info_bar_alternate_nav_url_view.h"
#include "chrome/browser/web_contents.h"
AlternateNavURLFetcher::AlternateNavURLFetcher(
const std::wstring& alternate_nav_url)
: alternate_nav_url_(alternate_nav_url),
controller_(NULL),
state_(NOT_STARTED),
navigated_to_entry_(false) {
NotificationService::current()->AddObserver(this,
NOTIFY_NAV_ENTRY_PENDING, NotificationService::AllSources());
}
AlternateNavURLFetcher::~AlternateNavURLFetcher() {
if (state_ == NOT_STARTED) {
// Never caught the NavigationController notification.
NotificationService::current()->RemoveObserver(this,
NOTIFY_NAV_ENTRY_PENDING, NotificationService::AllSources());
} // Otherwise, Observe() removed the observer already.
}
void AlternateNavURLFetcher::OnNavigatedToEntry() {
if (navigated_to_entry_)
return;
navigated_to_entry_ = true;
if (state_ == SUCCEEDED)
ShowInfobar();
}
void AlternateNavURLFetcher::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
controller_ = Source<NavigationController>(source).ptr();
if (!controller_->GetPendingEntry())
return; // No entry to attach ourselves to.
controller_->SetAlternateNavURLFetcher(this);
NotificationService::current()->RemoveObserver(this,
NOTIFY_NAV_ENTRY_PENDING, NotificationService::AllSources());
DCHECK_EQ(NOT_STARTED, state_);
state_ = IN_PROGRESS;
fetcher_.reset(new URLFetcher(GURL(alternate_nav_url_), URLFetcher::HEAD,
this));
fetcher_->set_request_context(controller_->profile()->GetRequestContext());
fetcher_->Start();
}
void AlternateNavURLFetcher::OnURLFetchComplete(const URLFetcher* source,
const GURL& url,
const URLRequestStatus& status,
int response_code,
const ResponseCookies& cookies,
const std::string& data) {
DCHECK(fetcher_.get() == source);
if (status.is_success() &&
// HTTP 2xx, 401, and 407 all indicate that the target address exists.
(((response_code / 100) == 2) ||
(response_code == 401) || (response_code == 407))) {
state_ = SUCCEEDED;
if (navigated_to_entry_)
ShowInfobar();
} else {
state_ = FAILED;
}
}
void AlternateNavURLFetcher::ShowInfobar() {
const NavigationEntry* const entry = controller_->GetActiveEntry();
DCHECK(entry);
if (entry->GetType() != TAB_CONTENTS_WEB)
return;
TabContents* tab_contents =
controller_->GetTabContents(TAB_CONTENTS_WEB);
DCHECK(tab_contents);
WebContents* web_contents = tab_contents->AsWebContents();
// The infobar will auto-expire this view on the next user-initiated
// navigation, so we don't need to keep track of it.
web_contents->GetInfoBarView()->AddChildView(new InfoBarAlternateNavURLView(
alternate_nav_url_));
}
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