Tabs Extension: Implementation of tabs.duplicate api.

chrome/browser/extensions/api/tabs/tabs.cc

 // Copyright (c) 2012 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/browser/extensions/api/tabs/tabs.h"
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 1083 matching lines @@
   // Return data about the newly created tab.
   if (has_callback()) {
     result_.reset(ExtensionTabUtil::CreateTabValue(
         params.target_contents->web_contents(),
         tab_strip, new_index));
   }
 
   return true;
 }
 
+bool DuplicateTabFunction::RunImpl() {
+  int tab_id = -1;
+  EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &tab_id));
+
+  Browser* browser = NULL;
+  TabStripModel* tab_strip = NULL;
+  TabContents* contents = NULL;
+  int tab_index = -1;
+  if (!GetTabById(tab_id, profile(), include_incognito(),
+                  &browser, &tab_strip, &contents, &tab_index, &error_))
+    return false;
+
+  TabContents* new_contents = browser->DuplicateContentsAt(tab_index);
+  int new_index = tab_strip->GetIndexOfTabContents(new_contents);
+
+  // Return data about the newly created tab.
+  if (has_callback()) {
+    if (GetExtension()->HasAPIPermission(ExtensionAPIPermission::kTab)) {
+      result_.reset(ExtensionTabUtil::CreateTabValue(

[SanjoyPal, 2012/07/06 13:46:52]

shall i pass a bool parameter hasPermission to CreateTabValue and omit url,
title and faviconUrl if hasPermission is false ?

+          new_contents->web_contents(),
+          tab_strip, new_index));
+    } else {
+      result_.reset(Value::CreateIntegerValue(
+          ExtensionTabUtil::GetTabId(new_contents->web_contents())));
+    }
+  }
+
+  return true;
+}
+
 bool GetTabFunction::RunImpl() {
   int tab_id = -1;
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &tab_id));
 
   TabStripModel* tab_strip = NULL;
   TabContents* contents = NULL;
   int tab_index = -1;
   if (!GetTabById(tab_id, profile(), include_incognito(),
                   NULL, &tab_strip, &contents, &tab_index, &error_))
     return false;
@@ skipping 710 matching lines @@
   // called for every API call the extension made.
   GotLanguage(language);
 }
 
 void DetectTabLanguageFunction::GotLanguage(const std::string& language) {
   result_.reset(Value::CreateStringValue(language.c_str()));
   SendResponse(true);
 
   Release();  // Balanced in Run()
 }