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      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/extensions/extension_view_host_factory.h"
     12 #include "chrome/browser/ui/browser.h"
     13 #include "chrome/browser/ui/tabs/tab_strip_model.h"
     14 #include "content/public/browser/devtools_agent_host.h"
     15 #include "content/public/browser/devtools_manager.h"
     16 #include "content/public/browser/notification_details.h"
     17 #include "content/public/browser/notification_source.h"
     18 #include "content/public/browser/render_view_host.h"
     19 #include "content/public/browser/web_contents.h"
     20 #include "ui/aura/window.h"
     21 #include "ui/gfx/insets.h"
     22 #include "ui/views/layout/fill_layout.h"
     23 #include "ui/views/widget/widget.h"
     24 #include "ui/wm/core/window_animations.h"
     25 #include "ui/wm/core/window_util.h"
     26 #include "ui/wm/public/activation_client.h"
     27 
     28 #if defined(OS_WIN)
     29 #include "ui/views/win/hwnd_util.h"
     30 #endif
     31 
     32 // The minimum/maximum dimensions of the popup.
     33 // The minimum is just a little larger than the size of the button itself.
     34 // The maximum is an arbitrary number that should be smaller than most screens.
     35 const int ExtensionPopup::kMinWidth = 25;
     36 const int ExtensionPopup::kMinHeight = 25;
     37 const int ExtensionPopup::kMaxWidth = 800;
     38 const int ExtensionPopup::kMaxHeight = 600;
     39 
     40 ExtensionPopup::ExtensionPopup(extensions::ExtensionViewHost* host,
     41                                views::View* anchor_view,
     42                                views::BubbleBorder::Arrow arrow,
     43                                ShowAction show_action)
     44     : BubbleDelegateView(anchor_view, arrow),
     45       host_(host),
     46       devtools_callback_(base::Bind(
     47           &ExtensionPopup::OnDevToolsStateChanged, base::Unretained(this))),
     48       widget_initialized_(false) {
     49   inspect_with_devtools_ = show_action == SHOW_AND_INSPECT;
     50   // Adjust the margin so that contents fit better.
     51   const int margin = views::BubbleBorder::GetCornerRadius() / 2;
     52   set_margins(gfx::Insets(margin, margin, margin, margin));
     53   SetLayoutManager(new views::FillLayout());
     54   AddChildView(host->view());
     55   host->view()->set_container(this);
     56   // ExtensionPopup closes itself on very specific de-activation conditions.
     57   set_close_on_deactivate(false);
     58 
     59   // Wait to show the popup until the contained host finishes loading.
     60   registrar_.Add(this, content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME,
     61                  content::Source<content::WebContents>(host->host_contents()));
     62 
     63   // Listen for the containing view calling window.close();
     64   registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE,
     65       content::Source<content::BrowserContext>(host->browser_context()));
     66   content::DevToolsManager::GetInstance()->AddAgentStateCallback(
     67       devtools_callback_);
     68 
     69   host_->view()->browser()->tab_strip_model()->AddObserver(this);
     70 }
     71 
     72 ExtensionPopup::~ExtensionPopup() {
     73   content::DevToolsManager::GetInstance()->RemoveAgentStateCallback(
     74       devtools_callback_);
     75 
     76   host_->view()->browser()->tab_strip_model()->RemoveObserver(this);
     77 }
     78 
     79 void ExtensionPopup::Observe(int type,
     80                              const content::NotificationSource& source,
     81                              const content::NotificationDetails& details) {
     82   switch (type) {
     83     case content::NOTIFICATION_LOAD_COMPLETED_MAIN_FRAME:
     84       DCHECK_EQ(host()->host_contents(),
     85                 content::Source<content::WebContents>(source).ptr());
     86       // Show when the content finishes loading and its width is computed.
     87       ShowBubble();
     88       break;
     89     case chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE:
     90       // If we aren't the host of the popup, then disregard the notification.
     91       if (content::Details<extensions::ExtensionHost>(host()) == details)
     92         GetWidget()->Close();
     93       break;
     94     default:
     95       NOTREACHED() << L"Received unexpected notification";
     96   }
     97 }
     98 
     99 void ExtensionPopup::OnDevToolsStateChanged(
    100     content::DevToolsAgentHost* agent_host,
    101     bool attached) {
    102   // First check that the devtools are being opened on this popup.
    103   if (host()->render_view_host() != agent_host->GetRenderViewHost())
    104     return;
    105 
    106   if (attached) {
    107     // Set inspect_with_devtools_ so the popup will be kept open while
    108     // the devtools are open.
    109     inspect_with_devtools_ = true;
    110   } else {
    111     // Widget::Close posts a task, which should give the devtools window a
    112     // chance to finish detaching from the inspected RenderViewHost.
    113     GetWidget()->Close();
    114   }
    115 }
    116 
    117 void ExtensionPopup::OnExtensionSizeChanged(ExtensionViewViews* view) {
    118   SizeToContents();
    119 }
    120 
    121 gfx::Size ExtensionPopup::GetPreferredSize() const {
    122   // Constrain the size to popup min/max.
    123   gfx::Size sz = views::View::GetPreferredSize();
    124   sz.set_width(std::max(kMinWidth, std::min(kMaxWidth, sz.width())));
    125   sz.set_height(std::max(kMinHeight, std::min(kMaxHeight, sz.height())));
    126   return sz;
    127 }
    128 
    129 void ExtensionPopup::ViewHierarchyChanged(
    130   const ViewHierarchyChangedDetails& details) {
    131   // TODO(msw): Find any remaining crashes related to http://crbug.com/327776
    132   // No view hierarchy changes are expected if the widget no longer exists.
    133   widget_initialized_ |= details.child == this && details.is_add && GetWidget();
    134   CHECK(GetWidget() || !widget_initialized_);
    135 }
    136 
    137 void ExtensionPopup::OnWidgetDestroying(views::Widget* widget) {
    138   BubbleDelegateView::OnWidgetDestroying(widget);
    139   aura::Window* bubble_window = GetWidget()->GetNativeWindow();
    140   aura::client::ActivationClient* activation_client =
    141       aura::client::GetActivationClient(bubble_window->GetRootWindow());
    142   // If the popup was being inspected with devtools and the browser window was
    143   // closed, then the root window and activation client are already destroyed.
    144   if (activation_client)
    145     activation_client->RemoveObserver(this);
    146 }
    147 
    148 void ExtensionPopup::OnWidgetActivationChanged(views::Widget* widget,
    149                                                bool active) {
    150   // TODO(msw): Find any remaining crashes related to http://crbug.com/327776
    151   // No calls are expected if the widget isn't initialized or no longer exists.
    152   CHECK(widget_initialized_);
    153   CHECK(GetWidget());
    154 
    155   // Close on anchor window activation (ie. user clicked the browser window).
    156   if (!inspect_with_devtools_ && widget && active &&
    157       widget->GetNativeWindow() == anchor_widget()->GetNativeWindow())
    158     GetWidget()->Close();
    159 }
    160 
    161 void ExtensionPopup::OnWindowActivated(aura::Window* gained_active,
    162                                        aura::Window* lost_active) {
    163   // TODO(msw): Find any remaining crashes related to http://crbug.com/327776
    164   // No calls are expected if the widget isn't initialized or no longer exists.
    165   CHECK(widget_initialized_);
    166   CHECK(GetWidget());
    167 
    168   // Close on anchor window activation (ie. user clicked the browser window).
    169   // DesktopNativeWidgetAura does not trigger the expected browser widget
    170   // [de]activation events when activating widgets in its own root window.
    171   // This additional check handles those cases. See: http://crbug.com/320889
    172   if (!inspect_with_devtools_ &&
    173       gained_active == anchor_widget()->GetNativeWindow())
    174     GetWidget()->Close();
    175 }
    176 
    177 void ExtensionPopup::ActiveTabChanged(content::WebContents* old_contents,
    178                                       content::WebContents* new_contents,
    179                                       int index,
    180                                       int reason) {
    181   GetWidget()->Close();
    182 }
    183 
    184 // static
    185 ExtensionPopup* ExtensionPopup::ShowPopup(const GURL& url,
    186                                           Browser* browser,
    187                                           views::View* anchor_view,
    188                                           views::BubbleBorder::Arrow arrow,
    189                                           ShowAction show_action) {
    190   extensions::ExtensionViewHost* host =
    191       extensions::ExtensionViewHostFactory::CreatePopupHost(url, browser);
    192   ExtensionPopup* popup = new ExtensionPopup(host, anchor_view, arrow,
    193       show_action);
    194   views::BubbleDelegateView::CreateBubble(popup);
    195 
    196   gfx::NativeView native_view = popup->GetWidget()->GetNativeView();
    197   wm::SetWindowVisibilityAnimationType(
    198       native_view, wm::WINDOW_VISIBILITY_ANIMATION_TYPE_VERTICAL);
    199   wm::SetWindowVisibilityAnimationVerticalPosition(native_view, -3.0f);
    200 
    201   // If the host had somehow finished loading, then we'd miss the notification
    202   // and not show.  This seems to happen in single-process mode.
    203   if (host->did_stop_loading())
    204     popup->ShowBubble();
    205 
    206   aura::Window* bubble_window = popup->GetWidget()->GetNativeWindow();
    207   aura::client::ActivationClient* activation_client =
    208       aura::client::GetActivationClient(bubble_window->GetRootWindow());
    209   activation_client->AddObserver(popup);
    210 
    211   return popup;
    212 }
    213 
    214 void ExtensionPopup::ShowBubble() {
    215   GetWidget()->Show();
    216 
    217   // Focus on the host contents when the bubble is first shown.
    218   host()->host_contents()->Focus();
    219 
    220   if (inspect_with_devtools_) {
    221     DevToolsWindow::OpenDevToolsWindow(host()->render_view_host(),
    222         DevToolsToggleAction::ShowConsole());
    223   }
    224 }
    225