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// Copyright (c) 2009 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/gtk/browser_actions_toolbar_gtk.h"
#include <gtk/gtk.h>
#include <vector>
#include "app/gfx/gtk_util.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/extensions/extension_browser_event_router.h"
#include "chrome/browser/extensions/extensions_service.h"
#include "chrome/browser/extensions/image_loading_tracker.h"
#include "chrome/browser/gtk/gtk_chrome_button.h"
#include "chrome/browser/profile.h"
#include "chrome/common/extensions/extension.h"
#include "chrome/common/notification_details.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/notification_type.h"
// The size of each button on the toolbar.
static const int kButtonSize = 29;
class BrowserActionButton : public NotificationObserver,
public ImageLoadingTracker::Observer {
public:
BrowserActionButton(Browser* browser, Extension* extension)
: browser_(browser),
extension_(extension),
button_(gtk_chrome_button_new()) {
DCHECK(extension_->browser_action());
gtk_widget_set_size_request(button_.get(), kButtonSize, kButtonSize);
browser_action_icons_.resize(
extension->browser_action()->icon_paths().size(), NULL);
tracker_ = new ImageLoadingTracker(this, browser_action_icons_.size());
for (size_t i = 0; i < extension->browser_action()->icon_paths().size();
++i) {
tracker_->PostLoadImageTask(extension->GetResource(
extension->browser_action()->icon_paths()[i]));
}
OnStateUpdated();
// We need to hook up extension popups here. http://crbug.com/23897
g_signal_connect(button_.get(), "clicked",
G_CALLBACK(OnButtonClicked), this);
registrar_.Add(this, NotificationType::EXTENSION_BROWSER_ACTION_UPDATED,
Source<ExtensionAction>(extension->browser_action()));
}
~BrowserActionButton() {
for (size_t i = 0; i < browser_action_icons_.size(); ++i) {
if (browser_action_icons_[i])
g_object_unref(browser_action_icons_[i]);
}
button_.Destroy();
tracker_->StopTrackingImageLoad();
}
GtkWidget* widget() { return button_.get(); }
static void OnButtonClicked(GtkWidget* widget, BrowserActionButton* action) {
ExtensionBrowserEventRouter::GetInstance()->BrowserActionExecuted(
action->browser_->profile(), action->extension_->id(),
action->browser_);
}
// Called when the tooltip has changed or an image has loaded.
void OnStateUpdated() {
gtk_widget_set_tooltip_text(button_.get(),
extension_->browser_action_state()->title().c_str());
if (browser_action_icons_.empty())
return;
GdkPixbuf* image =
browser_action_icons_[extension_->browser_action_state()->icon_index()];
if (image) {
gtk_button_set_image(GTK_BUTTON(button_.get()),
gtk_image_new_from_pixbuf(image));
}
}
// NotificationObserver implementation.
void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
OnStateUpdated();
}
// ImageLoadingTracker::Observer implementation.
void OnImageLoaded(SkBitmap* image, size_t index) {
if (image) {
browser_action_icons_[index] = gfx::GdkPixbufFromSkBitmap(image);
} else {
SkBitmap empty;
browser_action_icons_[index] = gfx::GdkPixbufFromSkBitmap(&empty);
}
OnStateUpdated();
}
private:
// The Browser that executes a command when the button is pressed.
Browser* browser_;
// The extension that contains this browser action.
Extension* extension_;
// The gtk widget for this browser action.
OwnedWidgetGtk button_;
// Loads the button's icons for us on the file thread.
ImageLoadingTracker* tracker_;
// Icons for all the different states the button can be in. These will be NULL
// while they are loading.
std::vector<GdkPixbuf*> browser_action_icons_;
NotificationRegistrar registrar_;
};
BrowserActionsToolbarGtk::BrowserActionsToolbarGtk(Browser* browser)
: browser_(browser),
profile_(browser->profile()),
hbox_(gtk_hbox_new(0, FALSE)) {
ExtensionsService* extension_service = profile_->GetExtensionsService();
registrar_.Add(this, NotificationType::EXTENSION_LOADED,
Source<ExtensionsService>(extension_service));
registrar_.Add(this, NotificationType::EXTENSION_UNLOADED,
Source<ExtensionsService>(extension_service));
registrar_.Add(this, NotificationType::EXTENSION_UNLOADED_DISABLED,
Source<ExtensionsService>(extension_service));
CreateAllButtons();
}
BrowserActionsToolbarGtk::~BrowserActionsToolbarGtk() {
hbox_.Destroy();
}
void BrowserActionsToolbarGtk::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
Extension* extension = Details<Extension>(details).ptr();
if (type == NotificationType::EXTENSION_LOADED) {
CreateButtonForExtension(extension);
} else if (type == NotificationType::EXTENSION_UNLOADED ||
type == NotificationType::EXTENSION_UNLOADED_DISABLED) {
RemoveButtonForExtension(extension);
} else {
NOTREACHED() << "Received unexpected notification";
}
}
void BrowserActionsToolbarGtk::CreateAllButtons() {
ExtensionsService* extension_service = profile_->GetExtensionsService();
if (!extension_service) // The |extension_service| can be NULL in Incognito.
return;
// Get all browser actions, including those with popups.
std::vector<ExtensionAction*> browser_actions =
extension_service->GetBrowserActions(true);
for (size_t i = 0; i < browser_actions.size(); ++i) {
Extension* extension = extension_service->GetExtensionById(
browser_actions[i]->id());
CreateButtonForExtension(extension);
}
}
void BrowserActionsToolbarGtk::CreateButtonForExtension(Extension* extension) {
// Only show extensions with browser actions and that have an icon.
if (!extension->browser_action() ||
extension->browser_action()->icon_paths().empty()) {
return;
}
RemoveButtonForExtension(extension);
linked_ptr<BrowserActionButton> button(
new BrowserActionButton(browser_, extension));
gtk_box_pack_end(GTK_BOX(hbox_.get()), button->widget(), FALSE, FALSE, 0);
gtk_widget_show(button->widget());
extension_button_map_[extension->id()] = button;
UpdateVisibility();
}
void BrowserActionsToolbarGtk::RemoveButtonForExtension(Extension* extension) {
if (extension_button_map_.erase(extension->id()))
UpdateVisibility();
}
void BrowserActionsToolbarGtk::UpdateVisibility() {
if (button_count() == 0)
gtk_widget_hide(widget());
else
gtk_widget_show(widget());
}
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