[Web Intents] Refactor picker to use WebIntentPickerModel.

chrome/browser/ui/gtk/web_intent_picker_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/gtk/web_intent_picker_gtk.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/callback.h"
+#include "base/utf_string_conversions.h"
 #include "chrome/browser/favicon/favicon_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/gtk/browser_toolbar_gtk.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/custom_button.h"
 #include "chrome/browser/ui/gtk/gtk_theme_service.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/browser/ui/gtk/location_bar_view_gtk.h"
 #include "chrome/browser/ui/gtk/tab_contents_container_gtk.h"
 #include "chrome/browser/ui/intents/web_intent_picker_controller.h"
 #include "chrome/browser/ui/intents/web_intent_picker_delegate.h"
+#include "chrome/browser/ui/intents/web_intent_picker_model.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/renderer_host/render_widget_host_view_gtk.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "googleurl/src/gurl.h"
 #include "grit/generated_resources.h"
@@ skipping 14 matching lines @@
 // button on the right.
 const int kMainContentWidth = 300;
 
 // The length in pixels of the label at the bottom of the picker. Text longer
 // than this width will wrap.
 const int kWebStoreLabelLength = 300;
 
 // The pixel size of the label at the bottom of the picker.
 const int kWebStoreLabelPixelSize = 11;
 
-// How much to scale the the buttons up from their favicon size.
-const int kServiceButtonScale = 3;
-
 GtkThemeService *GetThemeService(TabContentsWrapper* wrapper) {
   return GtkThemeService::GetFrom(wrapper->profile());
 }
 
 // Set the image of |button| to |pixbuf|, and scale the button up by
 // |kServiceButtonScale|.
 void SetServiceButtonImage(GtkWidget* button, GdkPixbuf* pixbuf) {
-  int width = gdk_pixbuf_get_width(pixbuf);
-  int height = gdk_pixbuf_get_height(pixbuf);
-  gtk_button_set_image(GTK_BUTTON(button),
-                       gtk_image_new_from_pixbuf(pixbuf));
-  gtk_widget_set_size_request(button,
-                              width * kServiceButtonScale,
-                              height * kServiceButtonScale);
+  gtk_button_set_image(GTK_BUTTON(button), gtk_image_new_from_pixbuf(pixbuf));
+  gtk_button_set_image_position(GTK_BUTTON(button), GTK_POS_LEFT);
+}
+
+// This helper function removes a widget from its parent container widget.
+void RemoveAllHelper(GtkWidget* widget, gpointer data) {
+  GtkWidget* parent = gtk_widget_get_parent(widget);
+  gtk_container_remove(GTK_CONTAINER(parent), widget);
 }
 
 } // namespace
 
 // static
 WebIntentPicker* WebIntentPicker::Create(Browser* browser,
                                          TabContentsWrapper* wrapper,
-                                         WebIntentPickerDelegate* delegate) {
-  return new WebIntentPickerGtk(browser, wrapper, delegate);
+                                         WebIntentPickerDelegate* delegate,
+                                         WebIntentPickerModel* model) {
+  return new WebIntentPickerGtk(browser, wrapper, delegate, model);
 }
 
 WebIntentPickerGtk::WebIntentPickerGtk(Browser* browser,
                                        TabContentsWrapper* wrapper,
-                                       WebIntentPickerDelegate* delegate)
+                                       WebIntentPickerDelegate* delegate,
+                                       WebIntentPickerModel* model)
     : wrapper_(wrapper),
       delegate_(delegate),
+      model_(model),
       contents_(NULL),
-      button_hbox_(NULL),
+      button_vbox_(NULL),
       bubble_(NULL),
       browser_(browser) {
   DCHECK(delegate_ != NULL);
   DCHECK(browser);
   DCHECK(browser->window());
+
+  model_->set_observer(this);
+
   BrowserWindowGtk* browser_window =
       BrowserWindowGtk::GetBrowserWindowForNativeWindow(
           browser->window()->GetNativeHandle());
 
   GtkWidget* anchor = browser_window->
       GetToolbar()->GetLocationBarView()->location_icon_widget();
 
   InitContents();
 
   BubbleGtk::ArrowLocationGtk arrow_location = base::i18n::IsRTL() ?
       BubbleGtk::ARROW_LOCATION_TOP_RIGHT :
       BubbleGtk::ARROW_LOCATION_TOP_LEFT;
   bubble_ = BubbleGtk::Show(anchor,
                             NULL,  // |rect|
                             contents_,
                             arrow_location,
                             true,  // |match_system_theme|
                             true,  // |grab_input|
                             GetThemeService(wrapper),
                             this);  // |delegate|
 }
 
 WebIntentPickerGtk::~WebIntentPickerGtk() {
   DCHECK(bubble_ == NULL) << "Should have closed window before destroying.";
 }
 
-void WebIntentPickerGtk::SetServiceURLs(const std::vector<GURL>& urls) {
-  for (size_t i = 0; i < urls.size(); ++i) {
+void WebIntentPickerGtk::OnModelChanged(WebIntentPickerModel* model) {
+  RemoveAllFrom(button_vbox_);
+
+  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
+
+  for (size_t i = 0; i < model->GetItemCount(); ++i) {
+    const WebIntentPickerModel::Item& item = model->GetItemAt(i);
+
     GtkWidget* button = gtk_button_new();
-    gtk_widget_set_tooltip_text(button, urls[i].spec().c_str());
-    gtk_box_pack_start(GTK_BOX(button_hbox_), button, FALSE, FALSE, 0);
+
+    gtk_widget_set_tooltip_text(button, item.url.spec().c_str());
+    gtk_button_set_label(GTK_BUTTON(button), UTF16ToUTF8(item.title).c_str());
+
+    gtk_box_pack_start(GTK_BOX(button_vbox_), button, FALSE, FALSE, 0);
     g_signal_connect(button,
                      "clicked",
                      G_CALLBACK(OnServiceButtonClickThunk),
                      this);
+
+    GdkPixbuf* icon_pixbuf = rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON);
+    SetServiceButtonImage(button, icon_pixbuf);
   }
 
   // Add the '+' button, to use the Chrome Web Store.
   GtkWidget* plus_button = gtk_button_new();
   gtk_widget_set_tooltip_text(
       plus_button,
       l10n_util::GetStringUTF8(IDS_FIND_MORE_INTENT_HANDLER_TOOLTIP).c_str());
-  gtk_box_pack_start(GTK_BOX(button_hbox_), plus_button, FALSE, FALSE, 0);
+  gtk_box_pack_start(GTK_BOX(button_vbox_), plus_button, FALSE, FALSE, 0);
 
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   GdkPixbuf* icon_pixbuf = rb.GetNativeImageNamed(IDR_SIDETABS_NEW_TAB);
   SetServiceButtonImage(plus_button, icon_pixbuf);
 
-  gtk_widget_show_all(button_hbox_);
+  gtk_widget_show_all(button_vbox_);
 }
 
-void WebIntentPickerGtk::SetServiceIcon(size_t index, const SkBitmap& icon) {
-  if (icon.empty())
+void WebIntentPickerGtk::OnFaviconChanged(WebIntentPickerModel* model,
+                                          size_t index) {
+  const WebIntentPickerModel::Item& item = model->GetItemAt(index);
+  if (item.favicon.get() == NULL)
     return;
 
   GtkWidget* button = GetServiceButton(index);
-
-  GdkPixbuf* icon_pixbuf = gfx::GdkPixbufFromSkBitmap(&icon);
+  GdkPixbuf* icon_pixbuf = item.favicon->ToGdkPixbuf();
   SetServiceButtonImage(button, icon_pixbuf);
-  g_object_unref(icon_pixbuf);
 }
 
-void WebIntentPickerGtk::SetDefaultServiceIcon(size_t index) {
-  GtkWidget* button = GetServiceButton(index);
+void WebIntentPickerGtk::OnInlineDisposition(WebIntentPickerModel* model) {
+  const WebIntentPickerModel::Item& item = model->GetItemAt(
+      model->inline_disposition_index());
+  const GURL& url = item.url;
 
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  GdkPixbuf* icon_pixbuf = rb.GetNativeImageNamed(IDR_DEFAULT_FAVICON);
-  SetServiceButtonImage(button, icon_pixbuf);
+  content::WebContents* web_contents = content::WebContents::Create(
+      browser_->profile(), NULL, MSG_ROUTING_NONE, NULL, NULL);
+  inline_disposition_tab_contents_.reset(new TabContentsWrapper(web_contents));
+  inline_disposition_delegate_.reset(new InlineDispositionDelegate);
+  web_contents->SetDelegate(inline_disposition_delegate_.get());
+  tab_contents_container_.reset(new TabContentsContainerGtk(NULL));
+  tab_contents_container_->SetTab(inline_disposition_tab_contents_.get());
+
+  inline_disposition_tab_contents_->web_contents()->GetController().LoadURL(
+      url, content::Referrer(), content::PAGE_TRANSITION_START_PAGE,
+      std::string());
+
+  // Replace the bubble picker contents with the inline disposition.
+
+  RemoveAllFrom(contents_);
+
+  GtkWidget* service_hbox = gtk_hbox_new(FALSE, ui::kControlSpacing);
+  // TODO(gbillock): Eventually get the service icon button here.
+  // Maybe add a title or something too?
+  close_button_.reset(
+      CustomDrawButton::CloseButton(GetThemeService(wrapper_)));
+  g_signal_connect(close_button_->widget(),
+                   "clicked",
+                   G_CALLBACK(OnCloseButtonClickThunk),
+                   this);
+  gtk_widget_set_can_focus(close_button_->widget(), FALSE);
+  GtkWidget* close_vbox = gtk_vbox_new(FALSE, 0);
+  gtk_box_pack_start(GTK_BOX(close_vbox), close_button_->widget(),
+                     FALSE, FALSE, 0);
+  gtk_box_pack_end(GTK_BOX(service_hbox), close_vbox, FALSE, FALSE, 0);
+
+  GtkWidget* vbox = gtk_vbox_new(FALSE, ui::kContentAreaSpacing);
+  gtk_box_pack_start(GTK_BOX(vbox), service_hbox, TRUE, TRUE, 0);
+
+  // The separator between the icon/title/close and the inline renderer.
+  gtk_box_pack_start(GTK_BOX(vbox), gtk_hseparator_new(), FALSE, TRUE, 0);
+
+  gtk_box_pack_end(GTK_BOX(vbox), tab_contents_container_->widget(),
+                   TRUE, TRUE, 0);
+
+  gtk_container_add(GTK_CONTAINER(contents_), vbox);
+
+  // TODO(gbillock): This size calculation needs more thought.
+  // Move up to WebIntentPicker?
+  gfx::Size tab_size = wrapper_->web_contents()->GetView()->GetContainerSize();
+  int width = std::max(tab_size.width()/2, kMainContentWidth);
+  int height = std::max(tab_size.height()/2, kMainContentWidth);
+  gtk_widget_set_size_request(tab_contents_container_->widget(),
+                              width, height);
+  gtk_widget_show_all(contents_);
+
+  delegate_->OnInlineDispositionWebContentsCreated(web_contents);
 }
 
 void WebIntentPickerGtk::Close() {
   bubble_->Close();
-  bubble_ = NULL;
   if (inline_disposition_tab_contents_.get())
     inline_disposition_tab_contents_->web_contents()->OnCloseStarted();
 }
 
 void WebIntentPickerGtk::BubbleClosing(BubbleGtk* bubble,
                                        bool closed_by_escape) {
   delegate_->OnClosing();
 }
 
 void WebIntentPickerGtk::OnCloseButtonClick(GtkWidget* button) {
   delegate_->OnCancelled();
   delegate_->OnClosing();
 }
 
+void WebIntentPickerGtk::OnDestroy(GtkWidget* button) {
+  // Destroy this object when the BubbleGtk is destroyed. It can't be "delete
+  // this" because this function happens in a callback.
+  MessageLoop::current()->DeleteSoon(FROM_HERE, this);
+  model_->set_observer(NULL);
+  bubble_ = NULL;
+}
+
 void WebIntentPickerGtk::OnServiceButtonClick(GtkWidget* button) {
-  GList* button_list = gtk_container_get_children(GTK_CONTAINER(button_hbox_));
+  GList* button_list = gtk_container_get_children(GTK_CONTAINER(button_vbox_));
   gint index = g_list_index(button_list, button);
   DCHECK(index != -1);
 
-  delegate_->OnServiceChosen(static_cast<size_t>(index));
+  const WebIntentPickerModel::Item& item = model_->GetItemAt(index);
+
+  delegate_->OnServiceChosen(static_cast<size_t>(index), item.disposition);
 }
 
 void WebIntentPickerGtk::InitContents() {
   GtkThemeService* theme_service = GetThemeService(wrapper_);
 
   contents_ = gtk_hbox_new(FALSE, ui::kContentAreaSpacing);
   gtk_container_set_border_width(GTK_CONTAINER(contents_),
                                  ui::kContentAreaBorder);
 
-  ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
-  GdkPixbuf* image_pixbuf = rb.GetNativeImageNamed(IDR_PAGEINFO_INFO);
-  GtkWidget* image = gtk_image_new_from_pixbuf(image_pixbuf);
-  gtk_box_pack_start(GTK_BOX(contents_), image, FALSE, FALSE, 0);
-  gtk_misc_set_alignment(GTK_MISC(image), 0, 0);
-
   GtkWidget* vbox = gtk_vbox_new(FALSE, ui::kContentAreaSpacing);
 
   GtkWidget* label = theme_service->BuildLabel(
       l10n_util::GetStringUTF8(IDS_CHOOSE_INTENT_HANDLER_MESSAGE).c_str(),
       ui::kGdkBlack);
   gtk_box_pack_start(GTK_BOX(vbox), label, TRUE, TRUE, 0);
   gtk_misc_set_alignment(GTK_MISC(label), 0, 0);
 
   gtk_widget_set_size_request(vbox, kMainContentWidth, -1);
 
-  button_hbox_ = gtk_hbox_new(FALSE, ui::kControlSpacing);
-  gtk_box_pack_start(GTK_BOX(vbox), button_hbox_, TRUE, TRUE, 0);
+  button_vbox_ = gtk_vbox_new(FALSE, ui::kControlSpacing);
+  gtk_box_pack_start(GTK_BOX(vbox), button_vbox_, TRUE, TRUE, 0);
 
   GtkWidget* cws_label = theme_service->BuildLabel(
       l10n_util::GetStringUTF8(IDS_FIND_MORE_INTENT_HANDLER_MESSAGE).c_str(),
       ui::kGdkBlack);
   gtk_box_pack_start(GTK_BOX(vbox), cws_label, TRUE, TRUE, 0);
   gtk_misc_set_alignment(GTK_MISC(cws_label), 0, 0);
   gtk_util::SetLabelWidth(cws_label, kWebStoreLabelLength);
   gtk_util::ForceFontSizePixels(cws_label, kWebStoreLabelPixelSize);
 
   gtk_box_pack_start(GTK_BOX(contents_), vbox, TRUE, TRUE, 0);
 
   close_button_.reset(
       CustomDrawButton::CloseButton(GetThemeService(wrapper_)));
   g_signal_connect(close_button_->widget(),
                    "clicked",
                    G_CALLBACK(OnCloseButtonClickThunk),
                    this);
   gtk_widget_set_can_focus(close_button_->widget(), FALSE);
 
   GtkWidget* close_vbox = gtk_vbox_new(FALSE, 0);
   gtk_box_pack_start(GTK_BOX(close_vbox), close_button_->widget(), FALSE, FALSE,
                      0);
   gtk_box_pack_end(GTK_BOX(contents_), close_vbox, FALSE, FALSE, 0);
-}
-
-void RemoveAllHelper(GtkWidget* widget, gpointer data) {
-  GtkWidget* parent = gtk_widget_get_parent(widget);
-  gtk_container_remove(GTK_CONTAINER(parent), widget);
-}
-
-WebContents* WebIntentPickerGtk::SetInlineDisposition(const GURL& url) {
-  WebContents* web_contents = WebContents::Create(
-      browser_->profile(), NULL, MSG_ROUTING_NONE, NULL, NULL);
-  inline_disposition_tab_contents_.reset(new TabContentsWrapper(web_contents));
-  inline_disposition_delegate_.reset(new InlineDispositionDelegate);
-  web_contents->SetDelegate(inline_disposition_delegate_.get());
-  tab_contents_container_.reset(new TabContentsContainerGtk(NULL));
-  tab_contents_container_->SetTab(inline_disposition_tab_contents_.get());
-
-  inline_disposition_tab_contents_->web_contents()->GetController().LoadURL(
-      url, content::Referrer(), content::PAGE_TRANSITION_START_PAGE,
-      std::string());
-
-  // Replace the bubble picker contents with the inline disposition.
-
-  gtk_container_foreach(GTK_CONTAINER(contents_), RemoveAllHelper, NULL);
-
-  GtkWidget* service_hbox = gtk_hbox_new(FALSE, ui::kControlSpacing);
-  // TODO(gbillock): Eventually get the service icon button here.
-  // Maybe add a title or something too?
-  close_button_.reset(
-      CustomDrawButton::CloseButton(GetThemeService(wrapper_)));
-  g_signal_connect(close_button_->widget(),
-                   "clicked",
-                   G_CALLBACK(OnCloseButtonClickThunk),
-                   this);
-  gtk_widget_set_can_focus(close_button_->widget(), FALSE);
-  GtkWidget* close_vbox = gtk_vbox_new(FALSE, 0);
-  gtk_box_pack_start(GTK_BOX(close_vbox), close_button_->widget(),
-                     FALSE, FALSE, 0);
-  gtk_box_pack_end(GTK_BOX(service_hbox), close_vbox, FALSE, FALSE, 0);
-
-  GtkWidget* vbox = gtk_vbox_new(FALSE, ui::kContentAreaSpacing);
-  gtk_box_pack_start(GTK_BOX(vbox), service_hbox, TRUE, TRUE, 0);
-
-  // The separator between the icon/title/close and the inline renderer.
-  gtk_box_pack_start(GTK_BOX(vbox), gtk_hseparator_new(), FALSE, TRUE, 0);
-
-  gtk_box_pack_end(GTK_BOX(vbox), tab_contents_container_->widget(),
-                   TRUE, TRUE, 0);
-
-  gtk_container_add(GTK_CONTAINER(contents_), vbox);
-
-  // TODO(gbillock): This size calculation needs more thought.
-  // Move up to WebIntentPicker?
-  gfx::Size tab_size = wrapper_->web_contents()->GetView()->GetContainerSize();
-  int width = std::max(tab_size.width()/2, kMainContentWidth);
-  int height = std::max(tab_size.height()/2, kMainContentWidth);
-  gtk_widget_set_size_request(tab_contents_container_->widget(),
-                              width, height);
-  gtk_widget_show_all(contents_);
-
-  return inline_disposition_tab_contents_->web_contents();
+  g_signal_connect(contents_, "destroy", G_CALLBACK(&OnDestroyThunk), this);
 }
 
 GtkWidget* WebIntentPickerGtk::GetServiceButton(size_t index) {
-  GList* button_list = gtk_container_get_children(GTK_CONTAINER(button_hbox_));
+  GList* button_list = gtk_container_get_children(GTK_CONTAINER(button_vbox_));
   GtkWidget* button = GTK_WIDGET(g_list_nth_data(button_list, index));
   DCHECK(button != NULL);
 
   return button;
 }
 
+void WebIntentPickerGtk::RemoveAllFrom(GtkWidget* container) {
+  gtk_container_foreach(GTK_CONTAINER(container), RemoveAllHelper, NULL);
+}
+
 // WebIntentPickerGtk::InlineDispositionDelegate
 
 WebIntentPickerGtk::InlineDispositionDelegate::InlineDispositionDelegate() {}
 WebIntentPickerGtk::InlineDispositionDelegate::~InlineDispositionDelegate() {}
 
-
 bool WebIntentPickerGtk::InlineDispositionDelegate::IsPopupOrPanel(
     const WebContents* source) const {
   return true;
 }
 
 bool WebIntentPickerGtk::InlineDispositionDelegate::
 ShouldAddNavigationToHistory(
     const history::HistoryAddPageArgs& add_page_args,
     content::NavigationType navigation_type) {
   return false;
 }