Add chrome to the repository.

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

1 files changed, 139 insertions, 0 deletions

diff --git a/chrome/browser/dom_ui/dom_ui_host.cc b/chrome/browser/dom_ui/dom_ui_host.cc
new file mode 100644
index 0000000..8bb7cad
--- /dev/null
+++ b/chrome/browser/dom_ui/dom_ui_host.cc
@@ -0,0 +1,139 @@
+// 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/dom_ui/dom_ui_host.h"
+
+#include "base/json_reader.h"
+#include "base/json_writer.h"
+#include "chrome/browser/browser.h"
+#include "chrome/browser/navigation_entry.h"
+#include "chrome/browser/tab_contents_type.h"
+#include "chrome/browser/render_view_host.h"
+
+DOMUIHost::DOMUIHost(Profile* profile,
+                     SiteInstance* instance,
+                     RenderViewHostFactory* render_view_factory)
+    : WebContents(profile,
+                  instance,
+                  render_view_factory,
+                  MSG_ROUTING_NONE,
+                  NULL) {
+  // Implementors of this class will have a specific tab contents type.
+  type_ = TAB_CONTENTS_UNKNOWN_TYPE;
+}
+
+DOMUIHost::~DOMUIHost() {
+  STLDeleteContainerPairSecondPointers(message_callbacks_.begin(),
+                                       message_callbacks_.end());
+  STLDeleteContainerPointers(handlers_.begin(), handlers_.end());
+}
+
+bool DOMUIHost::CreateRenderView(RenderViewHost* render_view_host) {
+  // Be sure to enable DOM UI bindings on the RenderViewHost before
+  // CreateRenderView is called.  Since a cross-site transition may be
+  // involved, this may or may not be the same RenderViewHost that we had when
+  // we were created.
+  render_view_host->AllowDOMUIBindings();
+  return WebContents::CreateRenderView(render_view_host);
+}
+
+void DOMUIHost::AddMessageHandler(DOMMessageHandler* handler) {
+  handlers_.push_back(handler);
+}
+
+void DOMUIHost::RegisterMessageCallback(const std::string& name,
+                                        MessageCallback* callback) {
+  message_callbacks_.insert(std::make_pair(name, callback));
+}
+
+
+void DOMUIHost::CallJavascriptFunction(const std::wstring& function_name,
+                                       const Value& arg) {
+  std::string json;
+  JSONWriter::Write(&arg, false, &json);
+  std::wstring javascript = function_name + L"(" + UTF8ToWide(json) + L");";
+
+  ExecuteJavascript(javascript);
+}
+
+void DOMUIHost::CallJavascriptFunction(
+    const std::wstring& function_name,
+    const Value& arg1, const Value& arg2) {
+  std::string json;
+  JSONWriter::Write(&arg1, false, &json);
+  std::wstring javascript = function_name + L"(" + UTF8ToWide(json);
+  JSONWriter::Write(&arg2, false, &json);
+  javascript += L"," + UTF8ToWide(json) + L");";
+
+  ExecuteJavascript(javascript);
+}
+
+void DOMUIHost::ProcessDOMUIMessage(const std::string& message,
+                                    const std::string& content) {
+  // Look up the callback for this message.
+  MessageCallbackMap::const_iterator callback = message_callbacks_.find(message);
+  if (callback == message_callbacks_.end())
+    return;
+
+  // Convert the content JSON into a Value.
+  Value* value = NULL;
+  if (!content.empty()) {
+    if (!JSONReader::Read(content, &value)) {
+      // The page sent us something that we didn't understand.
+      // This probably indicates a programming error.
+      NOTREACHED();
+      return;
+    }
+  }
+
+  // Forward this message and content on.
+  callback->second->Run(value);
+  delete value;
+}
+
+WebPreferences DOMUIHost::GetWebkitPrefs() {
+  // Get the users preferences then force image loading to always be on.
+  WebPreferences web_prefs = WebContents::GetWebkitPrefs();
+  web_prefs.loads_images_automatically = true;
+
+  return web_prefs;
+}
+
+void DOMUIHost::ExecuteJavascript(const std::wstring& javascript) {
+  // We're taking a string and making a javascript URL out of it. This means
+  // that escaping will follow the rules of a URL. Yet, the JSON text may have
+  // stuff in it that would be interpreted as escaped characters in a URL, but
+  // we want to preserve them literally.
+  //
+  // We just escape all the percents to avoid this, since when this javascript
+  // URL is interpreted, it will be unescaped.
+  std::wstring escaped_js(javascript);
+  ReplaceSubstringsAfterOffset(&escaped_js, 0, L"%", L"%25");
+  ExecuteJavascriptInWebFrame(L"", L"javascript:" + escaped_js);
+}