chrome/browser/ui/views/extensions/extension_dialog.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/ui/views/extensions/extension_dialog.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/profiles/profile.h"
  11 #include "chrome/browser/ui/views/constrained_window_views.h"
  12 #include "chrome/browser/ui/views/extensions/extension_dialog_observer.h"
  13 #include "content/public/browser/notification_details.h"
  14 #include "content/public/browser/notification_source.h"
  15 #include "content/public/browser/render_view_host.h"
  16 #include "content/public/browser/render_widget_host_view.h"
  17 #include "content/public/browser/web_contents.h"
  18 #include "ui/base/base_window.h"
  19 #include "ui/gfx/screen.h"
  20 #include "ui/views/background.h"
  21 #include "ui/views/widget/widget.h"
  22 #include "url/gurl.h"
  23
  24 using content::BrowserContext;
  25 using content::WebContents;
  26
  27 ExtensionDialog::ExtensionDialog(extensions::ExtensionViewHost* host,
  28                                  ExtensionDialogObserver* observer)
  29     : host_(host),
  30       observer_(observer) {
  31   AddRef();  // Balanced in DeleteDelegate();
  32
  33   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
  34                  content::Source<BrowserContext>(host->browser_context()));
  35   // Listen for the containing view calling window.close();
  36   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
  37                  content::Source<BrowserContext>(host->browser_context()));
  38   // Listen for a crash or other termination of the extension process.
  39   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED,
  40                  content::Source<BrowserContext>(host->browser_context()));
  41 }
  42
  43 ExtensionDialog::~ExtensionDialog() {
  44 }
  45
  46 // static
  47 ExtensionDialog* ExtensionDialog::Show(
  48     const GURL& url,
  49     aura::Window* parent_window,
  50     Profile* profile,
  51     WebContents* web_contents,
  52     int width,
  53     int height,
  54     int min_width,
  55     int min_height,
  56     const base::string16& title,
  57     ExtensionDialogObserver* observer) {
  58   extensions::ExtensionViewHost* host =
  59       extensions::ExtensionViewHostFactory::CreateDialogHost(url, profile);
  60   if (!host)
  61     return NULL;
  62   // Preferred size must be set before views::Widget::CreateWindowWithParent
  63   // is called because CreateWindowWithParent refers the result of CanResize().
  64   host->view()->SetPreferredSize(gfx::Size(width, height));
  65   host->view()->set_minimum_size(gfx::Size(min_width, min_height));
  66   host->SetAssociatedWebContents(web_contents);
  67
  68   DCHECK(parent_window);
  69   ExtensionDialog* dialog = new ExtensionDialog(host, observer);
  70   dialog->set_title(title);
  71   dialog->InitWindow(parent_window, width, height);
  72
  73   // Show a white background while the extension loads.  This is prettier than
  74   // flashing a black unfilled window frame.
  75   host->view()->set_background(
  76       views::Background::CreateSolidBackground(0xFF, 0xFF, 0xFF));
  77   host->view()->SetVisible(true);
  78
  79   // Ensure the DOM JavaScript can respond immediately to keyboard shortcuts.
  80   host->host_contents()->Focus();
  81   return dialog;
  82 }
  83
  84 void ExtensionDialog::InitWindow(aura::Window* parent,
  85                                  int width,
  86                                  int height) {
  87   views::Widget* window = CreateBrowserModalDialogViews(this, parent);
  88
  89   // Center the window over the browser.
  90   gfx::Point center = parent->GetBoundsInScreen().CenterPoint();
  91   int x = center.x() - width / 2;
  92   int y = center.y() - height / 2;
  93   // Ensure the top left and top right of the window are on screen, with
  94   // priority given to the top left.
  95   gfx::Rect screen_rect = gfx::Screen::GetScreenFor(parent)->
  96       GetDisplayNearestPoint(center).bounds();
  97   gfx::Rect bounds_rect = gfx::Rect(x, y, width, height);
  98   bounds_rect.AdjustToFit(screen_rect);
  99   window->SetBounds(bounds_rect);
 100
 101   window->Show();
 102   // TODO(jamescook): Remove redundant call to Activate()?
 103   window->Activate();
 104 }
 105
 106 void ExtensionDialog::ObserverDestroyed() {
 107   observer_ = NULL;
 108 }
 109
 110 void ExtensionDialog::MaybeFocusRenderView() {
 111   views::FocusManager* focus_manager = GetWidget()->GetFocusManager();
 112   DCHECK(focus_manager != NULL);
 113
 114   // Already there's a focused view, so no need to switch the focus.
 115   if (focus_manager->GetFocusedView())
 116     return;
 117
 118   content::RenderWidgetHostView* view = host()->render_view_host()->GetView();
 119   if (!view)
 120     return;
 121
 122   view->Focus();
 123 }
 124
 125 /////////////////////////////////////////////////////////////////////////////
 126 // views::DialogDelegate overrides.
 127
 128 int ExtensionDialog::GetDialogButtons() const {
 129   // The only user, SelectFileDialogExtension, provides its own buttons.
 130   return ui::DIALOG_BUTTON_NONE;
 131 }
 132
 133 bool ExtensionDialog::CanResize() const {
 134   // Can resize only if minimum contents size set.
 135   return host_->view()->GetPreferredSize() != gfx::Size();
 136 }
 137
 138 void ExtensionDialog::SetMinimumContentsSize(int width, int height) {
 139   host_->view()->SetPreferredSize(gfx::Size(width, height));
 140 }
 141
 142 ui::ModalType ExtensionDialog::GetModalType() const {
 143   return ui::MODAL_TYPE_WINDOW;
 144 }
 145
 146 bool ExtensionDialog::ShouldShowWindowTitle() const {
 147   return !window_title_.empty();
 148 }
 149
 150 base::string16 ExtensionDialog::GetWindowTitle() const {
 151   return window_title_;
 152 }
 153
 154 void ExtensionDialog::WindowClosing() {
 155   if (observer_)
 156     observer_->ExtensionDialogClosing(this);
 157 }
 158
 159 void ExtensionDialog::DeleteDelegate() {
 160   // The window has finished closing.  Allow ourself to be deleted.
 161   Release();
 162 }
 163
 164 views::Widget* ExtensionDialog::GetWidget() {
 165   return host_->view()->GetWidget();
 166 }
 167
 168 const views::Widget* ExtensionDialog::GetWidget() const {
 169   return host_->view()->GetWidget();
 170 }
 171
 172 views::View* ExtensionDialog::GetContentsView() {
 173   return host_->view();
 174 }
 175
 176 bool ExtensionDialog::UseNewStyleForThisDialog() const {
 177   return false;
 178 }
 179
 180 /////////////////////////////////////////////////////////////////////////////
 181 // content::NotificationObserver overrides.
 182
 183 void ExtensionDialog::Observe(int type,
 184                              const content::NotificationSource& source,
 185                              const content::NotificationDetails& details) {
 186   switch (type) {
 187     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING:
 188       // Avoid potential overdraw by removing the temporary background after
 189       // the extension finishes loading.
 190       host_->view()->set_background(NULL);
 191       // The render view is created during the LoadURL(), so we should
 192       // set the focus to the view if nobody else takes the focus.
 193       if (content::Details<extensions::ExtensionHost>(host()) == details)
 194         MaybeFocusRenderView();
 195       break;
 196     case chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
 197       // If we aren't the host of the popup, then disregard the notification.
 198       if (content::Details<extensions::ExtensionHost>(host()) != details)
 199         return;
 200       GetWidget()->Close();
 201       break;
 202     case chrome::NOTIFICATION_EXTENSION_PROCESS_TERMINATED:
 203       if (content::Details<extensions::ExtensionHost>(host()) != details)
 204         return;
 205       if (observer_)
 206         observer_->ExtensionTerminated(this);
 207       break;
 208     default:
 209       NOTREACHED() << L"Received unexpected notification";
 210       break;
 211   }
 212 }