chrome/browser/extensions/extension_infobar_delegate.cc

   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 #include "chrome/browser/extensions/extension_infobar_delegate.h"
   6
   7 #include "chrome/browser/chrome_notification_types.h"
   8 #include "chrome/browser/extensions/extension_view_host.h"
   9 #include "chrome/browser/extensions/extension_view_host_factory.h"
  10 #include "chrome/browser/infobars/infobar_service.h"
  11 #include "chrome/browser/profiles/profile.h"
  12 #include "chrome/browser/ui/browser.h"
  13 #include "components/infobars/core/infobar.h"
  14 #include "content/public/browser/notification_details.h"
  15 #include "content/public/browser/notification_source.h"
  16 #include "extensions/browser/extension_registry.h"
  17 #include "extensions/common/extension.h"
  18
  19 ExtensionInfoBarDelegate::~ExtensionInfoBarDelegate() {
  20 }
  21
  22 // static
  23 void ExtensionInfoBarDelegate::Create(content::WebContents* web_contents,
  24                                       Browser* browser,
  25                                       const extensions::Extension* extension,
  26                                       const GURL& url,
  27                                       int height) {
  28   InfoBarService::FromWebContents(web_contents)->AddInfoBar(
  29       ExtensionInfoBarDelegate::CreateInfoBar(
  30           scoped_ptr<ExtensionInfoBarDelegate>(new ExtensionInfoBarDelegate(
  31               browser, extension, url, web_contents, height))));
  32 }
  33
  34 ExtensionInfoBarDelegate::ExtensionInfoBarDelegate(
  35     Browser* browser,
  36     const extensions::Extension* extension,
  37     const GURL& url,
  38     content::WebContents* web_contents,
  39     int height)
  40     : infobars::InfoBarDelegate(),
  41 #if defined(TOOLKIT_VIEWS)
  42       browser_(browser),
  43 #endif
  44       extension_(extension),
  45       extension_registry_observer_(this),
  46       closing_(false) {
  47   extension_view_host_.reset(
  48       extensions::ExtensionViewHostFactory::CreateInfobarHost(url, browser));
  49   extension_view_host_->SetAssociatedWebContents(web_contents);
  50
  51   extension_registry_observer_.Add(
  52       extensions::ExtensionRegistry::Get(browser->profile()));
  53   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
  54                  content::Source<Profile>(browser->profile()));
  55
  56   height_ = std::max(0, height);
  57   height_ = std::min(2 * infobars::InfoBar::kDefaultBarTargetHeight, height_);
  58   if (height_ == 0)
  59     height_ = infobars::InfoBar::kDefaultBarTargetHeight;
  60 }
  61
  62 content::WebContents* ExtensionInfoBarDelegate::GetWebContents() {
  63   return InfoBarService::WebContentsFromInfoBar(infobar());
  64 }
  65
  66 // ExtensionInfoBarDelegate::CreateInfoBar() is implemented in platform-specific
  67 // files.
  68
  69 bool ExtensionInfoBarDelegate::EqualsDelegate(
  70     infobars::InfoBarDelegate* delegate) const {
  71   ExtensionInfoBarDelegate* extension_delegate =
  72       delegate->AsExtensionInfoBarDelegate();
  73   // When an extension crashes, an InfoBar is shown (for the crashed extension).
  74   // That will result in a call to this function (to see if this InfoBarDelegate
  75   // is already showing the 'extension crashed InfoBar', which it never is), but
  76   // if it is our extension that crashes, the extension delegate is NULL so
  77   // we cannot check.
  78   if (!extension_delegate)
  79     return false;
  80
  81   // Only allow one InfoBar at a time per extension.
  82   return extension_delegate->extension_view_host()->extension() ==
  83          extension_view_host_->extension();
  84 }
  85
  86 void ExtensionInfoBarDelegate::InfoBarDismissed() {
  87   closing_ = true;
  88 }
  89
  90 infobars::InfoBarDelegate::Type ExtensionInfoBarDelegate::GetInfoBarType()
  91     const {
  92   return PAGE_ACTION_TYPE;
  93 }
  94
  95 ExtensionInfoBarDelegate*
  96     ExtensionInfoBarDelegate::AsExtensionInfoBarDelegate() {
  97   return this;
  98 }
  99
 100 void ExtensionInfoBarDelegate::OnExtensionUnloaded(
 101     content::BrowserContext* browser_context,
 102     const extensions::Extension* extension,
 103     extensions::UnloadedExtensionInfo::Reason reason) {
 104   if (extension_ == extension)
 105     infobar()->RemoveSelf();
 106 }
 107
 108 void ExtensionInfoBarDelegate::Observe(
 109     int type,
 110     const content::NotificationSource& source,
 111     const content::NotificationDetails& details) {
 112   DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE);
 113   if (extension_view_host_.get() ==
 114       content::Details<extensions::ExtensionHost>(details).ptr())
 115     infobar()->RemoveSelf();
 116 }