chrome/browser/ui/views/extensions/extension_popup.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_popup.h"
   6
   7 #include "base/bind.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/browser/devtools/devtools_window.h"
  10 #include "chrome/browser/extensions/extension_view_host.h"
  11 #include "chrome/browser/ui/browser.h"
  12 #include "chrome/browser/ui/tabs/tab_strip_model.h"
  13 #include "content/public/browser/devtools_agent_host.h"
  14 #include "content/public/browser/notification_details.h"
  15 #include "content/public/browser/notification_source.h"
  16 #include "content/public/browser/render_view_host.h"
  17 #include "content/public/browser/web_contents.h"
  18 #include "ui/gfx/geometry/insets.h"
  19 #include "ui/views/layout/fill_layout.h"
  20 #include "ui/views/widget/widget.h"
  21
  22 namespace {
  23
  24 ExtensionViewViews* GetExtensionView(extensions::ExtensionViewHost* host) {
  25   return static_cast<ExtensionViewViews*>(host->view());
  26 }
  27
  28 }  // namespace
  29
  30 // The minimum/maximum dimensions of the popup.
  31 // The minimum is just a little larger than the size of the button itself.
  32 // The maximum is an arbitrary number that should be smaller than most screens.
  33 const int ExtensionPopup::kMinWidth = 25;
  34 const int ExtensionPopup::kMinHeight = 25;
  35 const int ExtensionPopup::kMaxWidth = 800;
  36 const int ExtensionPopup::kMaxHeight = 600;
  37
  38 #if !defined(USE_AURA)
  39 // static
  40 ExtensionPopup* ExtensionPopup::Create(extensions::ExtensionViewHost* host,
  41                                        views::View* anchor_view,
  42                                        views::BubbleBorder::Arrow arrow,
  43                                        ShowAction show_action) {
  44   auto popup = new ExtensionPopup(host, anchor_view, arrow, show_action);
  45   views::BubbleDelegateView::CreateBubble(popup);
  46   return popup;
  47 }
  48 #endif
  49
  50 ExtensionPopup::ExtensionPopup(extensions::ExtensionViewHost* host,
  51                                views::View* anchor_view,
  52                                views::BubbleBorder::Arrow arrow,
  53                                ShowAction show_action)
  54     : BubbleDelegateView(anchor_view, arrow),
  55       host_(host),
  56       devtools_callback_(base::Bind(
  57           &ExtensionPopup::OnDevToolsStateChanged, base::Unretained(this))),
  58       widget_initialized_(false) {
  59   inspect_with_devtools_ = show_action == SHOW_AND_INSPECT;
  60   // Adjust the margin so that contents fit better.
  61   const int margin = views::BubbleBorder::GetCornerRadius() / 2;
  62   set_margins(gfx::Insets(margin, margin, margin, margin));
  63   SetLayoutManager(new views::FillLayout());
  64   AddChildView(GetExtensionView(host));
  65   GetExtensionView(host)->set_container(this);
  66   // ExtensionPopup closes itself on very specific de-activation conditions.
  67   set_close_on_deactivate(false);
  68
  69
  70   // Listen for the containing view calling window.close();
  71   registrar_.Add(
  72       this,
  73       extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
  74       content::Source<content::BrowserContext>(host->browser_context()));
  75   content::DevToolsAgentHost::AddAgentStateCallback(devtools_callback_);
  76
  77   GetExtensionView(host)->GetBrowser()->tab_strip_model()->AddObserver(this);
  78
  79   // If the host had somehow finished loading, then we'd miss the notification
  80   // and not show.  This seems to happen in single-process mode.
  81   if (host_->has_loaded_once()) {
  82     ShowBubble();
  83   } else {
  84     // Wait to show the popup until the contained host finishes loading.
  85     registrar_.Add(this,
  86                    content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
  87                    content::Source<content::WebContents>(
  88                        host_->host_contents()));
  89   }
  90 }
  91
  92 ExtensionPopup::~ExtensionPopup() {
  93   content::DevToolsAgentHost::RemoveAgentStateCallback(devtools_callback_);
  94
  95   GetExtensionView(
  96       host_.get())->GetBrowser()->tab_strip_model()->RemoveObserver(this);
  97 }
  98
  99 void ExtensionPopup::Observe(int type,
 100                              const content::NotificationSource& source,
 101                              const content::NotificationDetails& details) {
 102   switch (type) {
 103     case content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME:
 104       DCHECK_EQ(host()->host_contents(),
 105                 content::Source<content::WebContents>(source).ptr());
 106       // Show when the content finishes loading and its width is computed.
 107       ShowBubble();
 108       break;
 109     case extensions::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
 110       // If we aren't the host of the popup, then disregard the notification.
 111       if (content::Details<extensions::ExtensionHost>(host()) == details)
 112         GetWidget()->Close();
 113       break;
 114     default:
 115       NOTREACHED() << L"Received unexpected notification";
 116   }
 117 }
 118
 119 void ExtensionPopup::OnDevToolsStateChanged(
 120     content::DevToolsAgentHost* agent_host,
 121     bool attached) {
 122   // First check that the devtools are being opened on this popup.
 123   if (host()->host_contents() != agent_host->GetWebContents())
 124     return;
 125
 126   if (attached) {
 127     // Set inspect_with_devtools_ so the popup will be kept open while
 128     // the devtools are open.
 129     inspect_with_devtools_ = true;
 130   } else {
 131     // Widget::Close posts a task, which should give the devtools window a
 132     // chance to finish detaching from the inspected RenderViewHost.
 133     GetWidget()->Close();
 134   }
 135 }
 136
 137 void ExtensionPopup::OnExtensionSizeChanged(ExtensionViewViews* view) {
 138   SizeToContents();
 139 }
 140
 141 gfx::Size ExtensionPopup::GetPreferredSize() const {
 142   // Constrain the size to popup min/max.
 143   gfx::Size sz = views::View::GetPreferredSize();
 144   sz.set_width(std::max(kMinWidth, std::min(kMaxWidth, sz.width())));
 145   sz.set_height(std::max(kMinHeight, std::min(kMaxHeight, sz.height())));
 146   return sz;
 147 }
 148
 149 void ExtensionPopup::ViewHierarchyChanged(
 150   const ViewHierarchyChangedDetails& details) {
 151   // TODO(msw): Find any remaining crashes related to http://crbug.com/327776
 152   // No view hierarchy changes are expected if the widget no longer exists.
 153   widget_initialized_ |= details.child == this && details.is_add && GetWidget();
 154   CHECK(GetWidget() || !widget_initialized_);
 155 }
 156
 157 void ExtensionPopup::OnWidgetActivationChanged(views::Widget* widget,
 158                                                bool active) {
 159   if (active && widget == anchor_widget())
 160     OnAnchorWindowActivation();
 161 }
 162
 163 void ExtensionPopup::ActiveTabChanged(content::WebContents* old_contents,
 164                                       content::WebContents* new_contents,
 165                                       int index,
 166                                       int reason) {
 167   GetWidget()->Close();
 168 }
 169
 170 void ExtensionPopup::OnAnchorWindowActivation() {
 171   // TODO(msw): Find any remaining crashes related to http://crbug.com/327776
 172   // No calls are expected if the widget isn't initialized or no longer exists.
 173   CHECK(widget_initialized_);
 174   CHECK(GetWidget());
 175
 176   if (!inspect_with_devtools_)
 177     GetWidget()->Close();
 178 }
 179
 180 // static
 181 ExtensionPopup* ExtensionPopup::ShowPopup(
 182     scoped_ptr<extensions::ExtensionViewHost> host,
 183     views::View* anchor_view,
 184     views::BubbleBorder::Arrow arrow,
 185     ShowAction show_action) {
 186   return ExtensionPopup::Create(
 187       host.release(), anchor_view, arrow, show_action);
 188 }
 189
 190 void ExtensionPopup::ShowBubble() {
 191   GetWidget()->Show();
 192
 193   // Focus on the host contents when the bubble is first shown.
 194   host()->host_contents()->Focus();
 195
 196   if (inspect_with_devtools_) {
 197     DevToolsWindow::OpenDevToolsWindow(host()->host_contents(),
 198                                        DevToolsToggleAction::ShowConsole());
 199   }
 200 }