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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/extension_shelf_gtk.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/gtk/browser_window_gtk.h"
#include "chrome/browser/gtk/gtk_theme_provider.h"
#include "chrome/browser/gtk/nine_box.h"
#include "chrome/browser/profile.h"
#include "chrome/common/notification_service.h"
#include "grit/app_resources.h"
#include "grit/generated_resources.h"
#include "grit/theme_resources.h"
// Preferred height of the ExtensionShelfGtk.
static const int kShelfHeight = 29;
static const int kToolstripPadding = 2;
class ExtensionShelfGtk::Toolstrip {
public:
explicit Toolstrip(ExtensionHost* host)
: host_(host),
extension_name_(host_->extension()->name()) {
DCHECK(host_->view());
Init();
}
~Toolstrip() {
label_.Destroy();
}
void AddToolstripToBox(GtkWidget* box);
void RemoveToolstripFromBox(GtkWidget* box);
private:
void Init();
ExtensionHost* host_;
const std::string extension_name_;
// Placeholder label with extension's name.
// TODO(phajdan.jr): replace the label with rendered extension contents.
OwnedWidgetGtk label_;
private:
DISALLOW_COPY_AND_ASSIGN(Toolstrip);
};
void ExtensionShelfGtk::Toolstrip::AddToolstripToBox(GtkWidget* box) {
gtk_box_pack_start(GTK_BOX(box), label_.get(), FALSE, FALSE,
kToolstripPadding);
}
void ExtensionShelfGtk::Toolstrip::RemoveToolstripFromBox(GtkWidget* box) {
gtk_container_remove(GTK_CONTAINER(box), label_.get());
}
void ExtensionShelfGtk::Toolstrip::Init() {
label_.Own(gtk_label_new(extension_name_.c_str()));
gtk_widget_show_all(label_.get());
}
ExtensionShelfGtk::ExtensionShelfGtk(Profile* profile, Browser* browser)
: browser_(browser),
theme_provider_(GtkThemeProvider::GetFrom(profile)),
model_(new ExtensionShelfModel(browser)) {
Init(profile);
registrar_.Add(this, NotificationType::BROWSER_THEME_CHANGED,
NotificationService::AllSources());
}
ExtensionShelfGtk::~ExtensionShelfGtk() {
model_->RemoveObserver(this);
event_box_.Destroy();
}
void ExtensionShelfGtk::AddShelfToBox(GtkWidget* box) {
gtk_box_pack_end(GTK_BOX(box), event_box_.get(), FALSE, FALSE, 0);
}
void ExtensionShelfGtk::Show() {
gtk_widget_show_all(event_box_.get());
}
void ExtensionShelfGtk::Hide() {
gtk_widget_hide(event_box_.get());
}
void ExtensionShelfGtk::ToolstripInsertedAt(ExtensionHost* host,
int index) {
Toolstrip* toolstrip = new Toolstrip(host);
toolstrip->AddToolstripToBox(shelf_hbox_);
toolstrips_.insert(toolstrip);
model_->SetToolstripDataAt(index, toolstrip);
AdjustHeight();
}
void ExtensionShelfGtk::ToolstripRemovingAt(ExtensionHost* host,
int index) {
Toolstrip* toolstrip = ToolstripAtIndex(index);
toolstrip->RemoveToolstripFromBox(shelf_hbox_);
toolstrips_.erase(toolstrip);
model_->SetToolstripDataAt(index, NULL);
delete toolstrip;
AdjustHeight();
}
void ExtensionShelfGtk::ToolstripMoved(ExtensionHost* host,
int from_index,
int to_index) {
// TODO(phajdan.jr): Implement reordering toolstrips.
AdjustHeight();
}
void ExtensionShelfGtk::ToolstripChangedAt(ExtensionHost* host,
int index) {
// TODO(phajdan.jr): Implement changing toolstrips.
AdjustHeight();
}
void ExtensionShelfGtk::ExtensionShelfEmpty() {
AdjustHeight();
}
void ExtensionShelfGtk::ShelfModelReloaded() {
for (std::set<Toolstrip*>::iterator iter = toolstrips_.begin();
iter != toolstrips_.end(); ++iter) {
(*iter)->RemoveToolstripFromBox(shelf_hbox_);
delete *iter;
}
toolstrips_.clear();
LoadFromModel();
}
void ExtensionShelfGtk::Init(Profile* profile) {
event_box_.Own(gtk_event_box_new());
shelf_hbox_ = gtk_hbox_new(FALSE, 0);
gtk_widget_set_app_paintable(shelf_hbox_, TRUE);
g_signal_connect(G_OBJECT(shelf_hbox_), "expose-event",
G_CALLBACK(&OnHBoxExpose), this);
gtk_container_add(GTK_CONTAINER(event_box_.get()), shelf_hbox_);
LoadFromModel();
model_->AddObserver(this);
}
void ExtensionShelfGtk::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
if (type == NotificationType::BROWSER_THEME_CHANGED) {
// TODO(phajdan.jr): Handle theme changes.
} else {
NOTREACHED() << "unexpected notification";
}
}
void ExtensionShelfGtk::InitBackground() {
if (background_ninebox_.get())
return;
background_ninebox_.reset(new NineBox(
browser_->profile()->GetThemeProvider(),
0, IDR_THEME_TOOLBAR, 0, 0, 0, 0, 0, 0, 0));
}
void ExtensionShelfGtk::AdjustHeight() {
if (model_->empty() || toolstrips_.empty()) {
// It's possible that |model_| is not empty, but |toolstrips_| are empty
// when removing the last toolstrip.
DCHECK(toolstrips_.empty());
Hide();
} else {
gtk_widget_set_size_request(event_box_.get(), -1, kShelfHeight);
Show();
}
}
void ExtensionShelfGtk::LoadFromModel() {
DCHECK(toolstrips_.empty());
int count = model_->count();
for (int i = 0; i < count; ++i)
ToolstripInsertedAt(model_->ToolstripAt(i), i);
AdjustHeight();
}
ExtensionShelfGtk::Toolstrip* ExtensionShelfGtk::ToolstripAtIndex(int index) {
return static_cast<Toolstrip*>(model_->ToolstripDataAt(index));
}
// static
gboolean ExtensionShelfGtk::OnHBoxExpose(GtkWidget* widget,
GdkEventExpose* event,
ExtensionShelfGtk* bar) {
// Paint the background theme image.
cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
cairo_rectangle(cr, event->area.x, event->area.y,
event->area.width, event->area.height);
cairo_clip(cr);
bar->InitBackground();
bar->background_ninebox_->RenderTopCenterStrip(
cr, event->area.x, event->area.y,
event->area.x + event->area.width);
cairo_destroy(cr);
return FALSE; // Propagate expose to children.
}
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