Initial support for web-extent background pages.

This patch adds a new RVH container: BackgroundContents. The idea is that apps can open a live web-page as a "background" page using window.open('<url>', '<name>', 'background');

If 'background' is specified and the opener is within the app's extent, a BackgroundContents will be used. Otherwise, the 'background' feature is ignored and it is treated as a regular popup call.

Note that as of this patch the following are explicitly not-yet addressed:

1) Session storage for BackgroundContents
2) SSL (or other failures) requiring UI
3) Javascript messages (alert, etc...)
4) Session restore

TEST=All tests should pass
BUG=41275

Review URL: http://codereview.chromium.org/1734014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46544 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 126 insertions, 0 deletions

diff --git a/chrome/browser/tab_contents/background_contents.h b/chrome/browser/tab_contents/background_contents.h
new file mode 100644
index 0000000..348b28a
--- /dev/null
+++ b/chrome/browser/tab_contents/background_contents.h
@@ -0,0 +1,126 @@
+// 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.
+
+#ifndef CHROME_BROWSER_TAB_CONTENTS_BACKGROUND_CONTENTS_H_
+#define CHROME_BROWSER_TAB_CONTENTS_BACKGROUND_CONTENTS_H_
+
+#include <string>
+
+#include "chrome/browser/jsmessage_box_client.h"
+#include "chrome/browser/renderer_host/render_view_host_delegate.h"
+#include "chrome/browser/tab_contents/render_view_host_delegate_helper.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/notification_registrar.h"
+#include "chrome/common/view_types.h"
+#include "chrome/common/window_container_type.h"
+
+class RenderWidgetHost;
+class RenderWidgetHostView;
+class TabContents;
+struct WebPreferences;
+
+// This class is a peer of TabContents. It can host a renderer, but does not
+// have any visible display. Its navigation is not managed by a
+// NavigationController because is has no facility for navigating (other than
+// programatically view window.location.href) or RenderViewHostManager because
+// it is never allowed to navigate across a SiteInstance boundary.
+class BackgroundContents : public RenderViewHostDelegate,
+                           public RenderViewHostDelegate::View,
+                           public NotificationObserver,
+                           public JavaScriptMessageBoxClient {
+ public:
+  BackgroundContents(SiteInstance* site_instance,
+                     int routing_id);
+  ~BackgroundContents();
+
+  // Provide access to the RenderViewHost for the
+  // RenderViewHostDelegateViewHelper
+  RenderViewHost* render_view_host() { return render_view_host_; }
+
+  // RenderViewHostDelegate implementation.
+  virtual RenderViewHostDelegate::View* GetViewDelegate() { return this; }
+  virtual const GURL& GetURL() const { return url_; }
+  virtual ViewType::Type GetRenderViewType() const {
+    return ViewType::BACKGROUND_CONTENTS;
+  }
+  virtual int GetBrowserWindowID() const {
+    return extension_misc::kUnknownWindowId;
+  }
+  virtual void DidNavigate(RenderViewHost* render_view_host,
+                           const ViewHostMsg_FrameNavigate_Params& params);
+  virtual WebPreferences GetWebkitPrefs();
+  virtual void ProcessDOMUIMessage(const std::string& message,
+                                   const Value* content,
+                                   const GURL& source_url,
+                                   int request_id,
+                                   bool has_callback);
+  virtual void RunJavaScriptMessage(const std::wstring& message,
+                                    const std::wstring& default_prompt,
+                                    const GURL& frame_url,
+                                    const int flags,
+                                    IPC::Message* reply_msg,
+                                    bool* did_suppress_message);
+  virtual void Close(RenderViewHost* render_view_host);
+  virtual RendererPreferences GetRendererPrefs(Profile* profile) const;
+
+  // RenderViewHostDelegate::View
+  virtual void CreateNewWindow(
+      int route_id,
+      WindowContainerType window_container_type);
+  virtual void CreateNewWidget(int route_id, WebKit::WebPopupType popup_type);
+  virtual void ShowCreatedWindow(int route_id,
+                                 WindowOpenDisposition disposition,
+                                 const gfx::Rect& initial_pos,
+                                 bool user_gesture);
+  virtual void ShowCreatedWidget(int route_id,
+                                 const gfx::Rect& initial_pos);
+  virtual void ShowContextMenu(const ContextMenuParams& params) {}
+  virtual void StartDragging(const WebDropData& drop_data,
+                             WebKit::WebDragOperationsMask allowed_operations,
+                             const SkBitmap& image,
+                             const gfx::Point& image_offset) {}
+  virtual void UpdateDragCursor(WebKit::WebDragOperation operation) {}
+  virtual void GotFocus() {}
+  virtual void TakeFocus(bool reverse) {}
+  virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
+                                      bool* is_keyboard_shortcut) {
+    return false;
+  }
+  virtual void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {}
+  virtual void HandleMouseEvent() {}
+  virtual void HandleMouseLeave() {}
+  virtual void UpdatePreferredSize(const gfx::Size& new_size) {}
+
+  // NotificationObserver
+  virtual void Observe(NotificationType type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details);
+
+  // JavaScriptMessageBoxClient
+  virtual std::wstring GetMessageBoxTitle(const GURL& frame_url,
+                                          bool is_alert);
+  virtual gfx::NativeWindow GetMessageBoxRootWindow();
+  virtual void OnMessageBoxClosed(IPC::Message* reply_msg,
+                                  bool success,
+                                  const std::wstring& prompt);
+  virtual void SetSuppressMessageBoxes(bool suppress_message_boxes) {}
+  virtual TabContents* AsTabContents() { return NULL; }
+  virtual ExtensionHost* AsExtensionHost() { return NULL; }
+
+ private:
+  // The host for our HTML content.
+  RenderViewHost* render_view_host_;
+
+  // Common implementations of some RenderViewHostDelegate::View methods.
+  RenderViewHostDelegateViewHelper delegate_view_helper_;
+
+  // The URL being hosted.
+  GURL url_;
+
+  NotificationRegistrar registrar_;
+
+  DISALLOW_COPY_AND_ASSIGN(BackgroundContents);
+};
+
+#endif  // CHROME_BROWSER_TAB_CONTENTS_BACKGROUND_CONTENTS_H_