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// Copyright 2013 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/libgtk2ui/menu_util.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/ui/libgtk2ui/gtk2_util.h"
#include "chrome/browser/ui/libgtk2ui/skia_utils_gtk2.h"
#include "ui/base/accelerators/accelerator.h"
#include "ui/base/accelerators/menu_label_accelerator_util_linux.h"
#include "ui/base/models/menu_model.h"
namespace libgtk2ui {
GtkWidget* BuildMenuItemWithImage(const std::string& label, GtkWidget* image) {
GtkWidget* menu_item = gtk_image_menu_item_new_with_mnemonic(label.c_str());
gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(menu_item), image);
return menu_item;
}
GtkWidget* BuildMenuItemWithImage(const std::string& label,
const gfx::Image& icon) {
GdkPixbuf* pixbuf = GdkPixbufFromSkBitmap(*icon.ToSkBitmap());
GtkWidget* menu_item =
BuildMenuItemWithImage(label, gtk_image_new_from_pixbuf(pixbuf));
g_object_unref(pixbuf);
return menu_item;
}
GtkWidget* BuildMenuItemWithLabel(const std::string& label) {
return gtk_menu_item_new_with_mnemonic(label.c_str());
}
ui::MenuModel* ModelForMenuItem(GtkMenuItem* menu_item) {
return reinterpret_cast<ui::MenuModel*>(
g_object_get_data(G_OBJECT(menu_item), "model"));
}
GtkWidget* AppendMenuItemToMenu(int index,
ui::MenuModel* model,
GtkWidget* menu_item,
GtkWidget* menu,
bool connect_to_activate,
GCallback item_activated_cb,
void* this_ptr) {
// Set the ID of a menu item.
// Add 1 to the menu_id to avoid setting zero (null) to "menu-id".
g_object_set_data(G_OBJECT(menu_item), "menu-id", GINT_TO_POINTER(index + 1));
// Native menu items do their own thing, so only selectively listen for the
// activate signal.
if (connect_to_activate) {
g_signal_connect(menu_item, "activate", item_activated_cb, this_ptr);
}
// AppendMenuItemToMenu is used both internally when we control menu creation
// from a model (where the model can choose to hide certain menu items), and
// with immediate commands which don't provide the option.
if (model) {
if (model->IsVisibleAt(index))
gtk_widget_show(menu_item);
} else {
gtk_widget_show(menu_item);
}
gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
return menu_item;
}
bool GetMenuItemID(GtkWidget* menu_item, int* menu_id) {
gpointer id_ptr = g_object_get_data(G_OBJECT(menu_item), "menu-id");
if (id_ptr != NULL) {
*menu_id = GPOINTER_TO_INT(id_ptr) - 1;
return true;
}
return false;
}
void ExecuteCommand(ui::MenuModel* model, int id) {
GdkEvent* event = gtk_get_current_event();
int event_flags = 0;
if (event && event->type == GDK_BUTTON_RELEASE)
event_flags = EventFlagsFromGdkState(event->button.state);
model->ActivatedAt(id, event_flags);
if (event)
gdk_event_free(event);
}
void BuildSubmenuFromModel(ui::MenuModel* model,
GtkWidget* menu,
GCallback item_activated_cb,
bool* block_activation,
void* this_ptr) {
std::map<int, GtkWidget*> radio_groups;
GtkWidget* menu_item = NULL;
for (int i = 0; i < model->GetItemCount(); ++i) {
gfx::Image icon;
std::string label = ui::ConvertAcceleratorsFromWindowsStyle(
base::UTF16ToUTF8(model->GetLabelAt(i)));
bool connect_to_activate = true;
switch (model->GetTypeAt(i)) {
case ui::MenuModel::TYPE_SEPARATOR:
menu_item = gtk_separator_menu_item_new();
break;
case ui::MenuModel::TYPE_CHECK:
menu_item = gtk_check_menu_item_new_with_mnemonic(label.c_str());
break;
case ui::MenuModel::TYPE_RADIO: {
std::map<int, GtkWidget*>::iterator iter =
radio_groups.find(model->GetGroupIdAt(i));
if (iter == radio_groups.end()) {
menu_item =
gtk_radio_menu_item_new_with_mnemonic(NULL, label.c_str());
radio_groups[model->GetGroupIdAt(i)] = menu_item;
} else {
menu_item = gtk_radio_menu_item_new_with_mnemonic_from_widget(
GTK_RADIO_MENU_ITEM(iter->second), label.c_str());
}
break;
}
case ui::MenuModel::TYPE_BUTTON_ITEM: {
NOTIMPLEMENTED();
break;
}
case ui::MenuModel::TYPE_SUBMENU:
case ui::MenuModel::TYPE_COMMAND: {
if (model->GetIconAt(i, &icon))
menu_item = BuildMenuItemWithImage(label, icon);
else
menu_item = BuildMenuItemWithLabel(label);
if (GTK_IS_IMAGE_MENU_ITEM(menu_item)) {
SetAlwaysShowImage(menu_item);
}
break;
}
default:
NOTREACHED();
}
if (model->GetTypeAt(i) == ui::MenuModel::TYPE_SUBMENU) {
GtkWidget* submenu = gtk_menu_new();
ui::MenuModel* submenu_model = model->GetSubmenuModelAt(i);
BuildSubmenuFromModel(submenu_model,
submenu,
item_activated_cb,
block_activation,
this_ptr);
gtk_menu_item_set_submenu(GTK_MENU_ITEM(menu_item), submenu);
// Update all the menu item info in the newly-generated menu.
gtk_container_foreach(
GTK_CONTAINER(submenu), SetMenuItemInfo, block_activation);
submenu_model->MenuWillShow();
connect_to_activate = false;
}
ui::Accelerator accelerator;
if (model->GetAcceleratorAt(i, &accelerator)) {
gtk_widget_add_accelerator(menu_item,
"activate",
NULL,
GetGdkKeyCodeForAccelerator(accelerator),
GetGdkModifierForAccelerator(accelerator),
GTK_ACCEL_VISIBLE);
}
g_object_set_data(G_OBJECT(menu_item), "model", model);
AppendMenuItemToMenu(i,
model,
menu_item,
menu,
connect_to_activate,
item_activated_cb,
this_ptr);
menu_item = NULL;
}
}
void SetMenuItemInfo(GtkWidget* widget, void* block_activation_ptr) {
if (GTK_IS_SEPARATOR_MENU_ITEM(widget)) {
// We need to explicitly handle this case because otherwise we'll ask the
// menu delegate about something with an invalid id.
return;
}
int id;
if (!GetMenuItemID(widget, &id))
return;
ui::MenuModel* model = ModelForMenuItem(GTK_MENU_ITEM(widget));
if (!model) {
// If we're not providing the sub menu, then there's no model. For
// example, the IME submenu doesn't have a model.
return;
}
bool* block_activation = static_cast<bool*>(block_activation_ptr);
if (GTK_IS_CHECK_MENU_ITEM(widget)) {
GtkCheckMenuItem* item = GTK_CHECK_MENU_ITEM(widget);
// gtk_check_menu_item_set_active() will send the activate signal. Touching
// the underlying "active" property will also call the "activate" handler
// for this menu item. So we prevent the "activate" handler from
// being called while we set the checkbox.
// Why not use one of the glib signal-blocking functions? Because when we
// toggle a radio button, it will deactivate one of the other radio buttons,
// which we don't have a pointer to.
*block_activation = true;
gtk_check_menu_item_set_active(item, model->IsItemCheckedAt(id));
*block_activation = false;
}
if (GTK_IS_MENU_ITEM(widget)) {
gtk_widget_set_sensitive(widget, model->IsEnabledAt(id));
if (model->IsVisibleAt(id)) {
// Update the menu item label if it is dynamic.
if (model->IsItemDynamicAt(id)) {
std::string label = ui::ConvertAcceleratorsFromWindowsStyle(
base::UTF16ToUTF8(model->GetLabelAt(id)));
gtk_menu_item_set_label(GTK_MENU_ITEM(widget), label.c_str());
if (GTK_IS_IMAGE_MENU_ITEM(widget)) {
gfx::Image icon;
if (model->GetIconAt(id, &icon)) {
GdkPixbuf* pixbuf = GdkPixbufFromSkBitmap(*icon.ToSkBitmap());
gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(widget),
gtk_image_new_from_pixbuf(pixbuf));
g_object_unref(pixbuf);
} else {
gtk_image_menu_item_set_image(GTK_IMAGE_MENU_ITEM(widget), NULL);
}
}
}
gtk_widget_show(widget);
} else {
gtk_widget_hide(widget);
}
GtkWidget* submenu = gtk_menu_item_get_submenu(GTK_MENU_ITEM(widget));
if (submenu) {
gtk_container_foreach(
GTK_CONTAINER(submenu), &SetMenuItemInfo, block_activation_ptr);
}
}
}
} // namespace libgtk2ui
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