1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_BROWSER_TAB_CONTENTS_H_ 6 #define CHROME_BROWSER_UI_BROWSER_TAB_CONTENTS_H_ 7 8 class Browser; 9 10 namespace content { 11 class WebContents; 12 } 13 14 namespace chrome { 15 class BrowserTabStripModelDelegate; 16 } 17 18 namespace prerender { 19 class PrerenderContents; 20 } 21 22 // A "tab contents" is a WebContents that is used as a tab in a browser 23 // window, and thus is owned by a Browser's TabStripModel. The 24 // BrowserTabContents class allows specific classes to attach the set of tab 25 // helpers that is used for tab contents. 26 // 27 // TODO(avi): This list is rather large, and for most callers it's due to the 28 // fact that they need tab helpers attached early to deal with arbitrary 29 // content loaded into a WebContents that will later be added to the tabstrip. 30 // Is there a better way to handle this? (Ideally, this list would contain 31 // only Browser and BrowserTabStripModelDelegate.) 32 class BrowserTabContents { 33 private: 34 // Browser and its TabStripModelDelegate have intimate control of tabs. 35 // TabAndroid is the equivalent on Android. 36 friend class Browser; 37 friend class chrome::BrowserTabStripModelDelegate; 38 friend class TabAndroid; 39 40 // chrome::Navigate creates WebContents that are destined for the tab strip, 41 // and that might have WebUI that immediately calls back into random tab 42 // helpers. 43 friend class BrowserNavigatorWebContentsAdoption; 44 45 // ChromeFrame is defined as a complete tab of Chrome inside of an IE 46 // window, so it need to have the full complement of tab helpers that it 47 // would have if it were in a Browser. 48 // TODO(avi): It's still probably a good idea for Chrome Frame to more 49 // explicitly control which tab helpers get created for its WebContentses. 50 // http://crbug.com/157590 51 friend class ExternalTabContainerWin; 52 53 // Prerendering loads pages that have arbitrary external content; it needs 54 // the full set of tab helpers to deal with it. 55 friend class prerender::PrerenderContents; 56 57 // Adopts the specified WebContents as a full-fledged browser tab, attaching 58 // all the associated tab helpers that are needed for the WebContents to 59 // serve in that role. It is safe to call this on a WebContents that was 60 // already adopted. 61 static void AttachTabHelpers(content::WebContents* web_contents); 62 }; 63 64 #endif // CHROME_BROWSER_UI_BROWSER_TAB_CONTENTS_H_ 65
