Move the content settings code out of RenderView, since it belongs in the Chrome layer.

BUG=76793
Review URL: http://codereview.chromium.org/6873040

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81955 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 74 insertions, 0 deletions

diff --git a/chrome/renderer/content_settings_observer.h b/chrome/renderer/content_settings_observer.h
new file mode 100644
index 0000000..52d89f5
--- /dev/null
+++ b/chrome/renderer/content_settings_observer.h
@@ -0,0 +1,74 @@
+// Copyright (c) 2011 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.
+
+#ifndef CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_
+#define CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_
+#pragma once
+
+#include <map>
+
+#include "chrome/common/content_settings.h"
+#include "content/renderer/render_view_observer.h"
+#include "content/renderer/render_view_observer_tracker.h"
+
+class GURL;
+
+// Handles blocking content per content settings for each RenderView.
+class ContentSettingsObserver
+    : public RenderViewObserver,
+      public RenderViewObserverTracker<ContentSettingsObserver> {
+ public:
+  explicit ContentSettingsObserver(RenderView* render_view);
+  virtual ~ContentSettingsObserver();
+
+  // Sets the content settings that back allowScripts(), allowImages(), and
+  // allowPlugins().
+  void SetContentSettings(const ContentSettings& settings);
+
+  // Returns the setting for the given type.
+  ContentSetting GetContentSetting(ContentSettingsType type);
+
+  // Sends an IPC notification that the specified content type was blocked.
+  // If the content type requires it, |resource_identifier| names the specific
+  // resource that was blocked (the plugin path in the case of plugins),
+  // otherwise it's the empty string.
+  void DidBlockContentType(ContentSettingsType settings_type,
+                           const std::string& resource_identifier);
+
+ private:
+  // RenderViewObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message);
+  virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
+                                        bool is_new_navigation);
+  virtual bool AllowImages(WebKit::WebFrame* frame, bool enabled_per_settings);
+  virtual bool AllowPlugins(WebKit::WebFrame* frame, bool enabled_per_settings);
+  virtual bool AllowScript(WebKit::WebFrame* frame, bool enabled_per_settings);
+  virtual void DidNotAllowPlugins(WebKit::WebFrame* frame);
+  virtual void DidNotAllowScript(WebKit::WebFrame* frame);
+
+  // Message handlers.
+  void OnSetContentSettingsForLoadingURL(
+      const GURL& url,
+      const ContentSettings& content_settings);
+
+  // Helper method that returns if the user wants to block content of type
+  // |content_type|.
+  bool AllowContentType(ContentSettingsType settings_type);
+
+  // Resets the |content_blocked_| array.
+  void ClearBlockedContentSettings();
+
+  typedef std::map<GURL, ContentSettings> HostContentSettings;
+  HostContentSettings host_content_settings_;
+
+  // Stores if loading of images, scripts, and plugins is allowed.
+  ContentSettings current_content_settings_;
+
+  // Stores if images, scripts, and plugins have actually been blocked.
+  bool content_blocked_[CONTENT_SETTINGS_NUM_TYPES];
+
+  DISALLOW_COPY_AND_ASSIGN(ContentSettingsObserver);
+};
+
+#endif  // CHROME_RENDERER_CONTENT_SETTINGS_OBSERVER_H_