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// Copyright (c) 2010 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 "views/controls/combobox/native_combobox_gtk.h"
#include <gtk/gtk.h>
#include <algorithm>
#include "base/message_loop.h"
#include "base/utf_string_conversions.h"
#include "ui/base/models/combobox_model.h"
#include "views/controls/combobox/combobox.h"
#include "views/views_delegate.h"
using ui::ComboboxModel; // TODO(beng): remove
namespace views {
////////////////////////////////////////////////////////////////////////////////
// NativeComboboxGtk, public:
NativeComboboxGtk::NativeComboboxGtk(Combobox* combobox)
: combobox_(combobox),
menu_(NULL) {
set_focus_view(combobox);
}
NativeComboboxGtk::~NativeComboboxGtk() {
}
////////////////////////////////////////////////////////////////////////////////
// NativeComboboxGtk, NativeComboboxWrapper implementation:
void NativeComboboxGtk::UpdateFromModel() {
if (!native_view())
return;
preferred_size_ = gfx::Size();
GtkListStore* store =
GTK_LIST_STORE(gtk_combo_box_get_model(GTK_COMBO_BOX(native_view())));
ComboboxModel* model = combobox_->model();
int count = model->GetItemCount();
gtk_list_store_clear(store);
GtkTreeIter iter;
while (count-- > 0) {
gtk_list_store_prepend(store, &iter);
gtk_list_store_set(store, &iter,
0, UTF16ToUTF8(model->GetItemAt(count)).c_str(),
-1);
}
}
void NativeComboboxGtk::UpdateSelectedItem() {
if (!native_view())
return;
gtk_combo_box_set_active(
GTK_COMBO_BOX(native_view()), combobox_->selected_item());
}
void NativeComboboxGtk::UpdateEnabled() {
SetEnabled(combobox_->IsEnabled());
}
int NativeComboboxGtk::GetSelectedItem() const {
if (!native_view())
return 0;
return gtk_combo_box_get_active(GTK_COMBO_BOX(native_view()));
}
bool NativeComboboxGtk::IsDropdownOpen() const {
if (!native_view())
return false;
gboolean popup_shown;
g_object_get(G_OBJECT(native_view()), "popup-shown", &popup_shown, NULL);
return popup_shown;
}
gfx::Size NativeComboboxGtk::GetPreferredSize() {
if (!native_view())
return gfx::Size();
if (preferred_size_.IsEmpty()) {
GtkRequisition size_request = { 0, 0 };
gtk_widget_size_request(native_view(), &size_request);
// TODO(oshima|scott): we may not need ::max to 29. revisit this.
preferred_size_.SetSize(size_request.width,
std::max(size_request.height, 29));
}
return preferred_size_;
}
View* NativeComboboxGtk::GetView() {
return this;
}
void NativeComboboxGtk::SetFocus() {
OnFocus();
}
gfx::NativeView NativeComboboxGtk::GetTestingHandle() const {
return native_view();
}
////////////////////////////////////////////////////////////////////////////////
// NativeComboboxGtk, NativeControlGtk overrides:
void NativeComboboxGtk::CreateNativeControl() {
GtkListStore* store = gtk_list_store_new(1, G_TYPE_STRING);
GtkWidget* widget = gtk_combo_box_new_with_model(GTK_TREE_MODEL(store));
g_object_unref(G_OBJECT(store));
GtkCellRenderer* cell = gtk_cell_renderer_text_new();
gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(widget), cell, TRUE);
gtk_cell_layout_set_attributes(
GTK_CELL_LAYOUT(widget), cell, "text", 0, NULL);
g_signal_connect(widget, "changed",
G_CALLBACK(CallChangedThunk), this);
g_signal_connect_after(widget, "popup",
G_CALLBACK(CallPopUpThunk), this);
// Get the menu associated with the combo box and listen to events on it.
GList* menu_list = gtk_menu_get_for_attach_widget(widget);
if (menu_list) {
menu_ = reinterpret_cast<GtkMenu*>(menu_list->data);
g_signal_connect_after(menu_, "move-current",
G_CALLBACK(CallMenuMoveCurrentThunk), this);
}
NativeControlCreated(widget);
}
void NativeComboboxGtk::NativeControlCreated(GtkWidget* native_control) {
NativeControlGtk::NativeControlCreated(native_control);
// Set the initial state of the combobox.
UpdateFromModel();
UpdateEnabled();
UpdateSelectedItem();
}
////////////////////////////////////////////////////////////////////////////////
// NativeComboboxGtk, private:
void NativeComboboxGtk::SelectionChanged() {
combobox_->SelectionChanged();
}
void NativeComboboxGtk::FocusedMenuItemChanged() {
DCHECK(menu_);
GtkWidget* menu_item = GTK_MENU_SHELL(menu_)->active_menu_item;
if (!menu_item)
return;
// Figure out the item index and total number of items.
GList* items = gtk_container_get_children(GTK_CONTAINER(menu_));
guint count = g_list_length(items);
int index = g_list_index(items, static_cast<gconstpointer>(menu_item));
// Get the menu item's label.
std::string name;
GList* children = gtk_container_get_children(GTK_CONTAINER(menu_item));
for (GList* l = g_list_first(children); l != NULL; l = g_list_next(l)) {
GtkWidget* child = static_cast<GtkWidget*>(l->data);
if (GTK_IS_CELL_VIEW(child)) {
GtkCellView* cell_view = GTK_CELL_VIEW(child);
GtkTreePath* path = gtk_cell_view_get_displayed_row(cell_view);
GtkTreeModel* model = NULL;
#if GTK_CHECK_VERSION(2, 16, 0)
model = gtk_cell_view_get_model(cell_view);
#else
g_object_get(cell_view, "model", &model, NULL);
#endif
GtkTreeIter iter;
if (model && gtk_tree_model_get_iter(model, &iter, path)) {
GValue value = { 0 };
gtk_tree_model_get_value(model, &iter, 0, &value);
name = g_value_get_string(&value);
break;
}
}
}
if (ViewsDelegate::views_delegate) {
ViewsDelegate::views_delegate->NotifyMenuItemFocused(
L"",
UTF8ToWide(name),
index,
count,
false);
}
}
void NativeComboboxGtk::CallChanged(GtkWidget* widget) {
SelectionChanged();
}
gboolean NativeComboboxGtk::CallPopUp(GtkWidget* widget) {
FocusedMenuItemChanged();
return false;
}
void NativeComboboxGtk::CallMenuMoveCurrent(
GtkWidget* menu, GtkMenuDirectionType focus_direction) {
FocusedMenuItemChanged();
}
////////////////////////////////////////////////////////////////////////////////
// NativeComboboxWrapper, public:
// static
NativeComboboxWrapper* NativeComboboxWrapper::CreateWrapper(
Combobox* combobox) {
return new NativeComboboxGtk(combobox);
}
} // namespace views
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