[chromium-reviews] Add getLanguage function to tabs extension

chrome/renderer/render_view.cc

 // Copyright (c) 2009 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/renderer/render_view.h"
 
 #include <algorithm>
 #include <string>
 #include <vector>
 
@@ skipping 174 matching lines @@
       devtools_agent_(NULL),
       devtools_client_(NULL),
       history_back_list_count_(0),
       history_forward_list_count_(0),
       has_unload_listener_(false),
       decrement_shared_popup_at_destruction_(false),
       form_field_autofill_request_id_(0),
       popup_notification_visible_(false),
       delay_seconds_for_form_state_sync_(kDefaultDelaySecondsForFormStateSync),
       preferred_width_(0),
-      send_preferred_width_changes_(false) {
+      send_preferred_width_changes_(false),
+      determine_page_text_after_loading_stops_(false) {
 }
 
 RenderView::~RenderView() {
   if (decrement_shared_popup_at_destruction_)
     shared_popup_counter_->data--;
 
   // Clear any back-pointers that might still be held by plugins.
   PluginDelegateList::iterator it = plugin_delegates_.begin();
   while (it != plugin_delegates_.end()) {
     (*it)->DropRenderView();
@@ skipping 142 matching lines @@
     IPC_MESSAGE_HANDLER(ViewMsg_Cut, OnCut)
     IPC_MESSAGE_HANDLER(ViewMsg_Copy, OnCopy)
     IPC_MESSAGE_HANDLER(ViewMsg_Paste, OnPaste)
     IPC_MESSAGE_HANDLER(ViewMsg_Replace, OnReplace)
     IPC_MESSAGE_HANDLER(ViewMsg_ToggleSpellCheck, OnToggleSpellCheck)
     IPC_MESSAGE_HANDLER(ViewMsg_Delete, OnDelete)
     IPC_MESSAGE_HANDLER(ViewMsg_SelectAll, OnSelectAll)
     IPC_MESSAGE_HANDLER(ViewMsg_CopyImageAt, OnCopyImageAt)
     IPC_MESSAGE_HANDLER(ViewMsg_ExecuteEditCommand, OnExecuteEditCommand)
     IPC_MESSAGE_HANDLER(ViewMsg_Find, OnFind)
+    IPC_MESSAGE_HANDLER(ViewMsg_DeterminePageText, OnDeterminePageText)
     IPC_MESSAGE_HANDLER(ViewMsg_Zoom, OnZoom)
     IPC_MESSAGE_HANDLER(ViewMsg_InsertText, OnInsertText)
     IPC_MESSAGE_HANDLER(ViewMsg_SetPageEncoding, OnSetPageEncoding)
     IPC_MESSAGE_HANDLER(ViewMsg_SetupDevToolsClient, OnSetupDevToolsClient)
     IPC_MESSAGE_HANDLER(ViewMsg_DownloadFavIcon, OnDownloadFavIcon)
     IPC_MESSAGE_HANDLER(ViewMsg_ScriptEvalRequest, OnScriptEvalRequest)
     IPC_MESSAGE_HANDLER(ViewMsg_CSSInsertRequest, OnCSSInsertRequest)
     IPC_MESSAGE_HANDLER(ViewMsg_AddMessageToConsole, OnAddMessageToConsole)
     IPC_MESSAGE_HANDLER(ViewMsg_ReservePageIDRange, OnReservePageIDRange)
     IPC_MESSAGE_HANDLER(ViewMsg_UploadFile, OnUploadFileRequest)
@@ skipping 122 matching lines @@
     return;
 
   // full text
   std::wstring contents;
   CaptureText(main_frame, &contents);
   if (contents.size()) {
     // Send the text to the browser for indexing.
     Send(new ViewHostMsg_PageContents(url, load_id, contents));
   }
 
+  // Send over text content of this page to the browser.
+  if (determine_page_text_after_loading_stops_) {
+    determine_page_text_after_loading_stops_ = false;
+    Send(new ViewMsg_DeterminePageText_Reply(routing_id_, contents));
+  }
+
   // thumbnail
   SendThumbnail();
 }
 
 void RenderView::CaptureText(WebFrame* frame, std::wstring* contents) {
   contents->clear();
   if (!frame)
     return;
 
   // Don't index any https pages. People generally don't want their bank
@@ skipping 1682 matching lines @@
                                          true);  // reset the tickmarks
       }
 
       // Iterate to the next frame. The frame will not necessarily scope, for
       // example if it is not visible.
       search_frame = webview()->GetNextFrameAfter(search_frame, true);
     } while (search_frame != main_frame);
   }
 }
 
+void RenderView::OnDeterminePageText() {
+  if (!is_loading_) {
+    if (!webview())
+      return;
+    WebFrame* main_frame = webview()->GetMainFrame();
+    std::wstring contents;
+    CaptureText(main_frame, &contents);
+    Send(new ViewMsg_DeterminePageText_Reply(routing_id_, contents));
+    determine_page_text_after_loading_stops_ = false;
+    return;
+  }
+
+  // We set |determine_page_text_after_loading_stops_| true here so that,
+  // after page has been loaded completely, the text in the page is captured.
+  determine_page_text_after_loading_stops_ = true;
+}
+
 void RenderView::ReportFindInPageMatchCount(int count, int request_id,
                                             bool final_update) {
   // If we have a message that has been queued up, then we should just replace
   // it. The ACK from the browser will make sure it gets sent when the browser
   // wants it.
   if (queued_find_reply_message_.get()) {
     IPC::Message* msg = new ViewHostMsg_Find_Reply(
         routing_id_,
         request_id,
         count,
@@ skipping 776 matching lines @@
     Send(new ViewHostMsg_PasswordFormsSeen(routing_id_, password_forms));
 }
 
 void RenderView::Print(WebFrame* frame, bool script_initiated) {
   DCHECK(frame);
   if (print_helper_.get() == NULL) {
     print_helper_.reset(new PrintWebViewHelper(this));
   }
   print_helper_->Print(frame, script_initiated);
 }