chrome/browser/ui/gtk/extensions/extension_popup_gtk.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/gtk/extensions/extension_popup_gtk.h"
   6
   7 #include <gtk/gtk.h>
   8
   9 #include <algorithm>
  10
  11 #include "base/bind.h"
  12 #include "base/bind_helpers.h"
  13 #include "base/callback.h"
  14 #include "base/i18n/rtl.h"
  15 #include "base/message_loop/message_loop.h"
  16 #include "chrome/browser/chrome_notification_types.h"
  17 #include "chrome/browser/devtools/devtools_window.h"
  18 #include "chrome/browser/extensions/extension_view_host.h"
  19 #include "chrome/browser/extensions/extension_view_host_factory.h"
  20 #include "chrome/browser/profiles/profile.h"
  21 #include "chrome/browser/ui/browser.h"
  22 #include "chrome/browser/ui/browser_window.h"
  23 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
  24 #include "content/public/browser/devtools_agent_host.h"
  25 #include "content/public/browser/devtools_manager.h"
  26 #include "content/public/browser/notification_details.h"
  27 #include "content/public/browser/notification_source.h"
  28 #include "content/public/browser/render_view_host.h"
  29 #include "content/public/browser/render_widget_host_view.h"
  30 #include "url/gurl.h"
  31
  32 using content::BrowserContext;
  33 using content::RenderViewHost;
  34
  35 ExtensionPopupGtk* ExtensionPopupGtk::current_extension_popup_ = NULL;
  36
  37 // The minimum/maximum dimensions of the extension popup.
  38 // The minimum is just a little larger than the size of a browser action button.
  39 // The maximum is an arbitrary number that should be smaller than most screens.
  40 const int ExtensionPopupGtk::kMinWidth = 25;
  41 const int ExtensionPopupGtk::kMinHeight = 25;
  42 const int ExtensionPopupGtk::kMaxWidth = 800;
  43 const int ExtensionPopupGtk::kMaxHeight = 600;
  44
  45 ExtensionPopupGtk::ExtensionPopupGtk(Browser* browser,
  46                                      extensions::ExtensionViewHost* host,
  47                                      GtkWidget* anchor,
  48                                      ShowAction show_action)
  49     : browser_(browser),
  50       bubble_(NULL),
  51       host_(host),
  52       anchor_(anchor),
  53       devtools_callback_(base::Bind(
  54           &ExtensionPopupGtk::OnDevToolsStateChanged, base::Unretained(this))),
  55       weak_factory_(this) {
  56   host_->view()->SetContainer(this);
  57   being_inspected_ = show_action == SHOW_AND_INSPECT;
  58
  59   // If the host had somehow finished loading, then we'd miss the notification
  60   // and not show.  This seems to happen in single-process mode.
  61   if (host->did_stop_loading()) {
  62     ShowPopup();
  63   } else {
  64     registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING,
  65                    content::Source<BrowserContext>(host->browser_context()));
  66   }
  67
  68   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
  69                  content::Source<BrowserContext>(host->browser_context()));
  70   content::DevToolsManager::GetInstance()->AddAgentStateCallback(
  71       devtools_callback_);
  72 }
  73
  74 ExtensionPopupGtk::~ExtensionPopupGtk() {
  75   content::DevToolsManager::GetInstance()->RemoveAgentStateCallback(
  76       devtools_callback_);
  77 }
  78
  79 // static
  80 void ExtensionPopupGtk::Show(const GURL& url, Browser* browser,
  81     GtkWidget* anchor, ShowAction show_action) {
  82   extensions::ExtensionViewHost* host =
  83       extensions::ExtensionViewHostFactory::CreatePopupHost(url, browser);
  84   // This object will delete itself when the bubble is closed.
  85   new ExtensionPopupGtk(browser, host, anchor, show_action);
  86 }
  87
  88 void ExtensionPopupGtk::Observe(int type,
  89                                 const content::NotificationSource& source,
  90                                 const content::NotificationDetails& details) {
  91   switch (type) {
  92     case chrome::NOTIFICATION_EXTENSION_HOST_DID_STOP_LOADING:
  93       if (content::Details<extensions::ExtensionHost>(host_.get()) == details)
  94         ShowPopup();
  95       break;
  96     case chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
  97       if (content::Details<extensions::ExtensionHost>(host_.get()) == details)
  98         DestroyPopup();
  99       break;
 100     default:
 101       NOTREACHED() << "Received unexpected notification";
 102   }
 103 }
 104
 105 void ExtensionPopupGtk::OnDevToolsStateChanged(
 106     content::DevToolsAgentHost* agent_host, bool attached) {
 107   // Make sure it's the devtools window that is inspecting our popup.
 108   if (host_->render_view_host() != agent_host->GetRenderViewHost())
 109     return;
 110   if (attached) {
 111     // Make sure that the popup won't go away when the inspector is activated.
 112     if (bubble_)
 113       bubble_->StopGrabbingInput();
 114
 115     being_inspected_ = true;
 116   } else {
 117     // If the devtools window is closing, we post a task to ourselves to
 118     // close the popup. This gives the devtools window a chance to finish
 119     // detaching from the inspected RenderViewHost.
 120     base::MessageLoop::current()->PostTask(
 121         FROM_HERE,
 122         base::Bind(&ExtensionPopupGtk::DestroyPopupWithoutResult,
 123                    weak_factory_.GetWeakPtr()));
 124   }
 125 }
 126
 127 void ExtensionPopupGtk::BubbleClosing(BubbleGtk* bubble,
 128                                       bool closed_by_escape) {
 129   current_extension_popup_ = NULL;
 130   delete this;
 131 }
 132
 133 void ExtensionPopupGtk::OnExtensionSizeChanged(
 134     ExtensionViewGtk* view,
 135     const gfx::Size& new_size) {
 136   int width = std::max(kMinWidth, std::min(kMaxWidth, new_size.width()));
 137   int height = std::max(kMinHeight, std::min(kMaxHeight, new_size.height()));
 138
 139   view->render_view_host()->GetView()->SetSize(gfx::Size(width, height));
 140   gtk_widget_set_size_request(view->native_view(), width, height);
 141 }
 142
 143 bool ExtensionPopupGtk::DestroyPopup() {
 144   if (!bubble_) {
 145     NOTREACHED();
 146     return false;
 147   }
 148
 149   bubble_->Close();
 150   return true;
 151 }
 152
 153 void ExtensionPopupGtk::ShowPopup() {
 154   if (bubble_) {
 155     NOTREACHED();
 156     return;
 157   }
 158
 159   if (being_inspected_)
 160     DevToolsWindow::OpenDevToolsWindow(host_->render_view_host());
 161
 162   // Only one instance should be showing at a time. Get rid of the old one, if
 163   // any. Typically, |current_extension_popup_| will be NULL, but it can be
 164   // non-NULL if a browser action button is clicked while another extension
 165   // popup's extension host is still loading.
 166   if (current_extension_popup_)
 167     current_extension_popup_->DestroyPopup();
 168   current_extension_popup_ = this;
 169
 170   GtkWidget* border_box = gtk_alignment_new(0, 0, 1.0, 1.0);
 171   // This border is necessary so the bubble's corners do not get cut off by the
 172   // render view.
 173   gtk_container_set_border_width(GTK_CONTAINER(border_box), 2);
 174   gtk_container_add(GTK_CONTAINER(border_box), host_->view()->native_view());
 175
 176   // We'll be in the upper-right corner of the window for LTR languages, so we
 177   // want to put the arrow at the upper-right corner of the bubble to match the
 178   // page and app menus.
 179   bubble_ = BubbleGtk::Show(anchor_,
 180                             NULL,
 181                             border_box,
 182                             BubbleGtk::ANCHOR_TOP_RIGHT,
 183                             being_inspected_ ? 0 :
 184                                 BubbleGtk::POPUP_WINDOW | BubbleGtk::GRAB_INPUT,
 185                             GtkThemeService::GetFrom(browser_->profile()),
 186                             this);
 187 }
 188
 189 void ExtensionPopupGtk::DestroyPopupWithoutResult() {
 190   DestroyPopup();
 191 }
 192
 193 gfx::Rect ExtensionPopupGtk::GetViewBounds() {
 194   GtkAllocation allocation;
 195   gtk_widget_get_allocation(host_->view()->native_view(), &allocation);
 196   return gfx::Rect(allocation);
 197 }