components/web_modal/web_contents_modal_dialog_manager.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 "components/web_modal/web_contents_modal_dialog_manager.h"
   6
   7 #include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
   8 #include "content/public/browser/navigation_details.h"
   9 #include "content/public/browser/navigation_entry.h"
  10 #include "content/public/browser/notification_details.h"
  11 #include "content/public/browser/notification_source.h"
  12 #include "content/public/browser/notification_types.h"
  13 #include "content/public/browser/render_view_host.h"
  14 #include "content/public/browser/web_contents.h"
  15 #include "content/public/browser/web_contents_view.h"
  16 #include "net/base/registry_controlled_domains/registry_controlled_domain.h"
  17
  18 using content::WebContents;
  19
  20 DEFINE_WEB_CONTENTS_USER_DATA_KEY(web_modal::WebContentsModalDialogManager);
  21
  22 namespace web_modal {
  23
  24 WebContentsModalDialogManager::~WebContentsModalDialogManager() {
  25   DCHECK(child_dialogs_.empty());
  26 }
  27
  28 void WebContentsModalDialogManager::ShowDialog(
  29     NativeWebContentsModalDialog dialog) {
  30   child_dialogs_.push_back(dialog);
  31
  32   native_manager_->ManageDialog(dialog);
  33
  34   if (child_dialogs_.size() == 1) {
  35     if (delegate_ && delegate_->IsWebContentsVisible(web_contents()))
  36       native_manager_->ShowDialog(dialog);
  37     BlockWebContentsInteraction(true);
  38   }
  39 }
  40
  41 bool WebContentsModalDialogManager::IsShowingDialog() const {
  42   return !child_dialogs_.empty();
  43 }
  44
  45 void WebContentsModalDialogManager::FocusTopmostDialog() {
  46   DCHECK(!child_dialogs_.empty());
  47   native_manager_->FocusDialog(child_dialogs_.front());
  48 }
  49
  50 content::WebContents* WebContentsModalDialogManager::GetWebContents() const {
  51   return web_contents();
  52 }
  53
  54 void WebContentsModalDialogManager::WillClose(
  55     NativeWebContentsModalDialog dialog) {
  56   WebContentsModalDialogList::iterator i(
  57       std::find(child_dialogs_.begin(), child_dialogs_.end(), dialog));
  58
  59   // The Views tab contents modal dialog calls WillClose twice.  Ignore the
  60   // second invocation.
  61   if (i == child_dialogs_.end())
  62     return;
  63
  64   bool removed_topmost_dialog = i == child_dialogs_.begin();
  65   child_dialogs_.erase(i);
  66   if (!child_dialogs_.empty() && removed_topmost_dialog &&
  67       !closing_all_dialogs_)
  68     native_manager_->ShowDialog(child_dialogs_.front());
  69
  70   BlockWebContentsInteraction(!child_dialogs_.empty());
  71 }
  72
  73 void WebContentsModalDialogManager::Observe(
  74     int type,
  75     const content::NotificationSource& source,
  76     const content::NotificationDetails& details) {
  77   DCHECK(type == content::NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED);
  78
  79   if (child_dialogs_.empty())
  80     return;
  81
  82   bool visible = *content::Details<bool>(details).ptr();
  83   if (visible)
  84     native_manager_->ShowDialog(child_dialogs_.front());
  85   else
  86     native_manager_->HideDialog(child_dialogs_.front());
  87 }
  88
  89 WebContentsModalDialogManager::WebContentsModalDialogManager(
  90     content::WebContents* web_contents)
  91     : content::WebContentsObserver(web_contents),
  92       delegate_(NULL),
  93       native_manager_(CreateNativeManager(this)),
  94       closing_all_dialogs_(false) {
  95   DCHECK(native_manager_);
  96   registrar_.Add(this,
  97                  content::NOTIFICATION_WEB_CONTENTS_VISIBILITY_CHANGED,
  98                  content::Source<content::WebContents>(web_contents));
  99 }
 100
 101 void WebContentsModalDialogManager::BlockWebContentsInteraction(bool blocked) {
 102   WebContents* contents = web_contents();
 103   if (!contents) {
 104     // The WebContents has already disconnected.
 105     return;
 106   }
 107
 108   // RenderViewHost may be NULL during shutdown.
 109   content::RenderViewHost* host = contents->GetRenderViewHost();
 110   if (host)
 111     host->SetIgnoreInputEvents(blocked);
 112   if (delegate_)
 113     delegate_->SetWebContentsBlocked(contents, blocked);
 114 }
 115
 116 void WebContentsModalDialogManager::CloseAllDialogs() {
 117   closing_all_dialogs_ = true;
 118
 119   // Clear out any dialogs since we are leaving this page entirely.
 120   while (!child_dialogs_.empty())
 121     native_manager_->CloseDialog(child_dialogs_.front());
 122
 123   closing_all_dialogs_ = false;
 124 }
 125
 126 void WebContentsModalDialogManager::DidNavigateMainFrame(
 127     const content::LoadCommittedDetails& details,
 128     const content::FrameNavigateParams& params) {
 129   // Close constrained windows if necessary.
 130   if (!net::registry_controlled_domains::SameDomainOrHost(
 131           details.previous_url, details.entry->GetURL(),
 132           net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES))
 133     CloseAllDialogs();
 134 }
 135
 136 void WebContentsModalDialogManager::DidGetIgnoredUIEvent() {
 137   if (!child_dialogs_.empty())
 138     native_manager_->FocusDialog(child_dialogs_.front());
 139 }
 140
 141 void WebContentsModalDialogManager::WebContentsDestroyed(WebContents* tab) {
 142   // First cleanly close all child dialogs.
 143   // TODO(mpcomplete): handle case if MaybeCloseChildWindows() already asked
 144   // some of these to close.  CloseAllDialogs is async, so it might get called
 145   // twice before it runs.
 146   CloseAllDialogs();
 147 }
 148
 149 }  // namespace web_modal