Refactor common, platform-independent code for the repost form warning dialog on all platforms into a delegate.

The platform-dependent ConstrainedWindow{Gtk,Mac,Win} classes each have their own platform-dependent |ConstrainedWindowDelegate| to inherit from, so instead of a common superclass they now have a RepostFormWarningDelegate.

Also, change the RELOADING notification to REPOST_WARNING_SHOWN to avoid trying to close the dialog while it's already in the process of being closed.

BUG=none
TEST=RepostFormWarningTest.*

Review URL: http://codereview.chromium.org/1520023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@44074 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 66 insertions, 0 deletions

diff --git a/chrome/browser/repost_form_warning_controller.cc b/chrome/browser/repost_form_warning_controller.cc
new file mode 100644
index 0000000..7b38c4c
--- /dev/null
+++ b/chrome/browser/repost_form_warning_controller.cc
@@ -0,0 +1,66 @@
+// 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/repost_form_warning_controller.h"
+
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/notification_service.h"
+
+RepostFormWarningController::RepostFormWarningController(
+    TabContents* tab_contents)
+    : tab_contents_(tab_contents),
+      window_(NULL) {
+  NavigationController* controller = &tab_contents->controller();
+  registrar_.Add(this, NotificationType::LOAD_START,
+                 Source<NavigationController>(controller));
+  registrar_.Add(this, NotificationType::TAB_CLOSING,
+                 Source<NavigationController>(controller));
+  registrar_.Add(this, NotificationType::REPOST_WARNING_SHOWN,
+                 Source<NavigationController>(controller));
+}
+
+RepostFormWarningController::~RepostFormWarningController() {
+}
+
+void RepostFormWarningController::Show(
+    ConstrainedWindowDelegate* window_delegate) {
+  window_ = tab_contents_->CreateConstrainedDialog(window_delegate);
+}
+
+void RepostFormWarningController::Cancel() {
+  if (tab_contents_) {
+    tab_contents_->controller().CancelPendingReload();
+    CloseDialog();
+  }
+}
+
+void RepostFormWarningController::Continue() {
+  if (tab_contents_) {
+    tab_contents_->controller().ContinuePendingReload();
+    // If we reload the page, the dialog will be closed anyway.
+  }
+}
+
+void RepostFormWarningController::Observe(NotificationType type,
+                                const NotificationSource& source,
+                                const NotificationDetails& details) {
+  // Close the dialog if we load a page (because reloading might not apply to
+  // the same page anymore) or if the tab is closed, because then we won't have
+  // a navigation controller anymore.
+  if ((type == NotificationType::LOAD_START ||
+       type == NotificationType::TAB_CLOSING ||
+       type == NotificationType::REPOST_WARNING_SHOWN)) {
+    DCHECK_EQ(Source<NavigationController>(source).ptr(),
+              &tab_contents_->controller());
+    Cancel();
+  }
+}
+
+void RepostFormWarningController::CloseDialog() {
+  tab_contents_ = NULL;
+  if (window_) {
+    window_->CloseConstrainedWindow();
+  }
+  delete this;
+}