Add chrome to the repository.

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

1 files changed, 127 insertions, 0 deletions

diff --git a/chrome/browser/dom_ui/dom_ui_host.h b/chrome/browser/dom_ui/dom_ui_host.h
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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.
+
+// DOMUIHost is a special type of TabContents that can display Chrome-specific
+// content using HTML.
+// It provides methods to send data to and from the page Javascript.
+
+// TODO(evanm): Add more limitations on what the contents of this view
+//              can do (especially regarding network requests).
+
+#ifndef CHROME_BROWSER_DOM_UI_DOM_UI_HOST_H__
+#define CHROME_BROWSER_DOM_UI_DOM_UI_HOST_H__
+
+#include "chrome/browser/web_contents.h"
+#include "webkit/glue/webpreferences.h"
+
+class DOMMessageDispatcher;
+class RenderProcessHost;
+class RenderViewHost;
+
+// Messages sent from the DOM are forwarded via the DOMUIHost to handler
+// classes.  These objects are owned by DOMUIHost and destroyed when the
+// host is destroyed.
+class DOMMessageHandler {
+ public:
+  virtual ~DOMMessageHandler() {}
+};
+
+// See the comments at the top of this file.
+class DOMUIHost : public WebContents {
+ public:
+  DOMUIHost(Profile* profile,
+            SiteInstance* instance,
+            RenderViewHostFactory* render_view_factory);
+
+  // Initializes the given renderer, after enabling DOM UI bindings on it.
+  virtual bool CreateRenderView(RenderViewHost* render_view_host);
+
+  // Add type-specific javascript message handlers.
+  // TODO(timsteele): Any implementation of this method should really be done
+  // upon construction, but that won't work until the TabContents::controller()
+  // API is fixed to never return NULL, and likewise for TabContents::profile().
+  // Only then could any Handlers we attach here access the profile upon
+  // construction, which is the most common case; currently they'll blow up.
+  virtual void AttachMessageHandlers() = 0;
+
+  // Add |handler| to the list of handlers owned by this object.
+  // They will be destroyed when this page is hidden.
+  void AddMessageHandler(DOMMessageHandler* handler);
+
+  // Register a callback for a specific message.
+  typedef Callback1<const Value*>::Type MessageCallback;
+  void RegisterMessageCallback(const std::string& message,
+                               MessageCallback* callback);
+
+
+  // Call a Javascript function by sending its name and arguments down to
+  // the renderer.  This is asynchronous; there's no way to get the result
+  // of the call, and should be thought of more like sending a message to
+  // the page.
+  // There are two function variants for one-arg and two-arg calls.
+  void CallJavascriptFunction(const std::wstring& function_name,
+                              const Value& arg);
+  void CallJavascriptFunction(const std::wstring& function_name,
+                              const Value& arg1,
+                              const Value& arg2);
+
+
+  // Overrides from WebContents.
+  virtual void ProcessDOMUIMessage(const std::string& message,
+                                   const std::string& content);
+  virtual DOMUIHost* AsDOMUIHost() { return this; }
+
+  // Override this method so we can ensure that javascript and image loading
+  // are always on even for DOMUIHost tabs.
+  virtual WebPreferences GetWebkitPrefs();
+
+  // We override updating history with a no-op so these pages
+  // are not saved to history.
+  virtual void UpdateHistoryForNavigation(const GURL& url,
+      const ViewHostMsg_FrameNavigate_Params& params) { }
+
+ protected:
+  // Should delete via CloseContents.
+  virtual ~DOMUIHost();
+
+ private:
+  // Execute a string of raw Javascript on the page.
+  void ExecuteJavascript(const std::wstring& javascript);
+
+  // The DOMMessageHandlers we own.
+  std::vector<DOMMessageHandler*> handlers_;
+
+  // A map of message name -> message handling callback.
+  typedef std::map<std::string, MessageCallback*> MessageCallbackMap;
+  MessageCallbackMap message_callbacks_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(DOMUIHost);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_DOM_UI_HOST_H__