Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 114 insertions, 0 deletions

diff --git a/chrome/browser/alternate_nav_url_fetcher.cc b/chrome/browser/alternate_nav_url_fetcher.cc
new file mode 100644
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+++ b/chrome/browser/alternate_nav_url_fetcher.cc
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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_NAVIGATION_STATE_CHANGED, NotificationService::AllSources());
+}
+
+AlternateNavURLFetcher::~AlternateNavURLFetcher() {
+  if (state_ == NOT_STARTED) {
+    // Never caught the NavigationController notification.
+    NotificationService::current()->RemoveObserver(this,
+        NOTIFY_NAVIGATION_STATE_CHANGED, 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_NAVIGATION_STATE_CHANGED, 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_));
+}