chrome/browser/extensions/chrome_extension_function.cc

   1 // Copyright 2013 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 #include "chrome/browser/extensions/chrome_extension_function.h"
   6
   7 #include "chrome/browser/extensions/chrome_extension_function_details.h"
   8 #include "chrome/browser/extensions/window_controller.h"
   9 #include "chrome/browser/extensions/window_controller_list.h"
  10 #include "chrome/browser/profiles/profile.h"
  11 #include "chrome/browser/ui/browser.h"
  12 #include "chrome/browser/ui/browser_finder.h"
  13 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  14 #include "content/public/browser/render_process_host.h"
  15 #include "content/public/browser/render_view_host.h"
  16 #include "extensions/browser/extension_function_dispatcher.h"
  17
  18 using content::RenderViewHost;
  19 using content::WebContents;
  20
  21 ChromeUIThreadExtensionFunction::ChromeUIThreadExtensionFunction() {
  22 }
  23
  24 Profile* ChromeUIThreadExtensionFunction::GetProfile() const {
  25   return Profile::FromBrowserContext(context_);
  26 }
  27
  28 // TODO(stevenjb): Replace this with GetExtensionWindowController().
  29 Browser* ChromeUIThreadExtensionFunction::GetCurrentBrowser() {
  30   // If the delegate has an associated browser, return it.
  31   if (dispatcher()) {
  32     extensions::WindowController* window_controller =
  33         dispatcher()->GetExtensionWindowController();
  34     if (window_controller) {
  35       Browser* browser = window_controller->GetBrowser();
  36       if (browser)
  37         return browser;
  38     }
  39   }
  40
  41   // Otherwise, try to default to a reasonable browser. If |include_incognito_|
  42   // is true, we will also search browsers in the incognito version of this
  43   // profile. Note that the profile may already be incognito, in which case
  44   // we will search the incognito version only, regardless of the value of
  45   // |include_incognito|. Look only for browsers on the active desktop as it is
  46   // preferable to pretend no browser is open then to return a browser on
  47   // another desktop.
  48   content::WebContents* web_contents = GetSenderWebContents();
  49   if (web_contents) {
  50     Profile* profile =
  51         Profile::FromBrowserContext(web_contents->GetBrowserContext());
  52     Browser* browser = chrome::FindAnyBrowser(
  53         profile, include_incognito_, chrome::GetActiveDesktop());
  54     if (browser)
  55       return browser;
  56   }
  57
  58   // NOTE(rafaelw): This can return NULL in some circumstances. In particular,
  59   // a background_page onload chrome.tabs api call can make it into here
  60   // before the browser is sufficiently initialized to return here, or
  61   // all of this profile's browser windows may have been closed.
  62   // A similar situation may arise during shutdown.
  63   // TODO(rafaelw): Delay creation of background_page until the browser
  64   // is available. http://code.google.com/p/chromium/issues/detail?id=13284
  65   return NULL;
  66 }
  67
  68 extensions::WindowController*
  69 ChromeUIThreadExtensionFunction::GetExtensionWindowController() {
  70   // If the delegate has an associated window controller, return it.
  71   if (dispatcher()) {
  72     extensions::WindowController* window_controller =
  73         dispatcher()->GetExtensionWindowController();
  74     if (window_controller)
  75       return window_controller;
  76   }
  77
  78   return extensions::WindowControllerList::GetInstance()
  79       ->CurrentWindowForFunction(this);
  80 }
  81
  82 content::WebContents*
  83 ChromeUIThreadExtensionFunction::GetAssociatedWebContents() {
  84   content::WebContents* web_contents =
  85       UIThreadExtensionFunction::GetAssociatedWebContents();
  86   if (web_contents)
  87     return web_contents;
  88
  89   Browser* browser = GetCurrentBrowser();
  90   if (!browser)
  91     return NULL;
  92   return browser->tab_strip_model()->GetActiveWebContents();
  93 }
  94
  95 ChromeUIThreadExtensionFunction::~ChromeUIThreadExtensionFunction() {
  96 }
  97
  98 ChromeAsyncExtensionFunction::ChromeAsyncExtensionFunction() {
  99 }
 100
 101 ChromeAsyncExtensionFunction::~ChromeAsyncExtensionFunction() {}
 102
 103 ExtensionFunction::ResponseAction ChromeAsyncExtensionFunction::Run() {
 104   return RunAsync() ? RespondLater() : RespondNow(Error(error_));
 105 }
 106
 107 // static
 108 bool ChromeAsyncExtensionFunction::ValidationFailure(
 109     ChromeAsyncExtensionFunction* function) {
 110   return false;
 111 }
 112
 113 ChromeSyncExtensionFunction::ChromeSyncExtensionFunction() {
 114 }
 115
 116 ChromeSyncExtensionFunction::~ChromeSyncExtensionFunction() {}
 117
 118 ExtensionFunction::ResponseAction ChromeSyncExtensionFunction::Run() {
 119   return RespondNow(RunSync() ? ArgumentList(results_.Pass()) : Error(error_));
 120 }
 121
 122 // static
 123 bool ChromeSyncExtensionFunction::ValidationFailure(
 124     ChromeSyncExtensionFunction* function) {
 125   return false;
 126 }