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medit/moo/mooutils/moocombo.c

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/*
* moocombo.c
*
* Copyright (C) 2004-2006 by Yevgen Muntyan <muntyan@math.tamu.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* See COPYING file that comes with this distribution.
*/
#include MOO_MARSHALS_H
#ifndef __MOO__
#include "moocombo.h"
#include "mooentry.h"
#else
#include "mooutils/moocombo.h"
#include "mooutils/mooentry.h"
#endif
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <string.h>
#define MAX_POPUP_LEN 15
struct _MooComboPrivate {
gboolean use_button;
GtkWidget *button;
GtkSizeGroup* size_group;
GtkWidget *popup;
GtkTreeView *treeview;
GtkTreeViewColumn *column;
GtkTreeModel *model;
GtkTreeRowReference *active_row;
int text_column;
GtkCellRenderer *text_cell;
MooComboGetTextFunc get_text_func;
gpointer get_text_data;
MooComboRowSeparatorFunc row_separator_func;
gpointer row_separator_data;
};
static void moo_combo_cell_layout_init (GtkCellLayoutIface *iface);
static void moo_combo_cell_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void moo_combo_cell_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand);
static void moo_combo_cell_layout_clear (GtkCellLayout *cell_layout);
static void moo_combo_cell_layout_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const gchar *attribute,
gint column);
static void moo_combo_cell_layout_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy);
static void moo_combo_cell_layout_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell);
static void moo_combo_cell_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gint position);
static void moo_combo_class_init (MooComboClass *klass);
static void moo_combo_init (MooCombo *combo);
static void moo_combo_finalize (GObject *object);
static void moo_combo_destroy (GtkObject *object);
static void moo_combo_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void moo_combo_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void moo_combo_unmap (GtkWidget *widget);
static void moo_combo_unrealize (GtkWidget *widget);
static gboolean moo_combo_focus (GtkWidget *widget,
GtkDirectionType direction);
static void moo_combo_popup_real (MooCombo *combo);
static void moo_combo_popdown_real (MooCombo *combo);
static void moo_combo_changed (MooCombo *combo);
static gboolean moo_combo_popup_key_press (MooCombo *combo,
GdkEventKey *event);
static void create_arrow_button (MooCombo *combo);
static void button_clicked (MooCombo *combo);
static void create_popup (MooCombo *combo);
static gboolean resize_popup (MooCombo *combo);
static gboolean entry_focus_out (MooCombo *combo);
static gboolean popup_button_press (MooCombo *combo,
GdkEventButton *event);
static gboolean popup_key_press_cb (MooCombo *combo,
GdkEventKey *event);
static int popup_get_selected (MooCombo *combo);
static gboolean list_button_press (MooCombo *combo,
GdkEventButton *event);
static char *default_get_text_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data);
static void entry_changed (MooCombo *combo);
GType
moo_combo_get_type (void)
{
static GType type = 0;
if (!type)
{
static const GTypeInfo info =
{
sizeof (MooComboClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) moo_combo_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (MooCombo),
0,
(GInstanceInitFunc) moo_combo_init,
NULL
};
static const GInterfaceInfo cell_layout_info =
{
(GInterfaceInitFunc) moo_combo_cell_layout_init,
NULL,
NULL
};
type = g_type_register_static (GTK_TYPE_TABLE, "MooCombo", &info, 0);
g_type_add_interface_static (type, GTK_TYPE_CELL_LAYOUT, &cell_layout_info);
}
return type;
}
static gpointer moo_combo_parent_class = NULL;
enum {
PROP_0,
PROP_ACTIVATES_DEFAULT,
PROP_USE_BUTTON
};
enum {
POPUP,
POPDOWN,
CHANGED,
POPUP_KEY_PRESS,
NUM_SIGNALS
};
static guint signals[NUM_SIGNALS];
static void
moo_combo_class_init (MooComboClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GtkObjectClass *gtkobject_class = GTK_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkBindingSet *binding_set;
moo_combo_parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize = moo_combo_finalize;
gobject_class->set_property = moo_combo_set_property;
gobject_class->get_property = moo_combo_get_property;
gtkobject_class->destroy = moo_combo_destroy;
widget_class->unmap = moo_combo_unmap;
widget_class->unrealize = moo_combo_unrealize;
widget_class->focus = moo_combo_focus;
klass->popup = moo_combo_popup_real;
klass->popdown = moo_combo_popdown_real;
klass->popup_key_press = moo_combo_popup_key_press;
g_object_class_install_property (gobject_class,
PROP_ACTIVATES_DEFAULT,
g_param_spec_boolean ("activates-default",
"Activates default",
"Whether to activate the default widget (such as the default button in a dialog) when Enter is pressed",
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class,
PROP_USE_BUTTON,
g_param_spec_boolean ("use-button",
"use-button",
"use-button",
TRUE,
G_PARAM_READWRITE));
signals[POPUP] =
g_signal_new ("popup",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (MooComboClass, popup),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[POPDOWN] =
g_signal_new ("popdown",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (MooComboClass, popdown),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[CHANGED] =
g_signal_new ("changed",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooComboClass, changed),
NULL, NULL,
_moo_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[POPUP_KEY_PRESS] =
g_signal_new ("popup-key-press",
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MooComboClass, popup_key_press),
g_signal_accumulator_true_handled, NULL,
_moo_marshal_BOOLEAN__BOXED,
G_TYPE_BOOLEAN, 1,
GDK_TYPE_EVENT | G_SIGNAL_TYPE_STATIC_SCOPE);
binding_set = gtk_binding_set_by_class (klass);
gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK,
"popup", 0);
}
static void
moo_combo_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->pack_start = moo_combo_cell_layout_pack_start;
iface->pack_end = moo_combo_cell_layout_pack_end;
iface->clear = moo_combo_cell_layout_clear;
iface->add_attribute = moo_combo_cell_layout_add_attribute;
iface->set_cell_data_func = moo_combo_cell_layout_set_cell_data_func;
iface->clear_attributes = moo_combo_cell_layout_clear_attributes;
iface->reorder = moo_combo_cell_layout_reorder;
}
static void
moo_combo_init (MooCombo *combo)
{
combo->priv = g_new0 (MooComboPrivate, 1);
combo->priv->use_button = TRUE;
combo->priv->get_text_func = default_get_text_func;
combo->priv->get_text_data = combo;
gtk_table_resize (GTK_TABLE (combo), 1, 2);
combo->priv->size_group = gtk_size_group_new (GTK_SIZE_GROUP_VERTICAL);
combo->entry = moo_entry_new ();
gtk_widget_show (combo->entry);
gtk_table_attach (GTK_TABLE (combo), combo->entry,
0, 1, 0, 1,
GTK_EXPAND | GTK_FILL,
0, 0, 0);
gtk_size_group_add_widget (combo->priv->size_group, combo->entry);
g_signal_connect_swapped (combo->entry, "changed",
G_CALLBACK (entry_changed), combo);
create_arrow_button (combo);
create_popup (combo);
}
static void
create_arrow_button (MooCombo *combo)
{
GtkWidget *arrow, *frame;
combo->priv->button = gtk_button_new ();
gtk_button_set_focus_on_click (GTK_BUTTON (combo->priv->button), FALSE);
gtk_widget_show (combo->priv->button);
gtk_size_group_add_widget (combo->priv->size_group, combo->priv->button);
gtk_table_attach (GTK_TABLE (combo), combo->priv->button,
1, 2, 0, 1,
0, 0, 0, 0);
g_signal_connect_swapped (combo->priv->button, "clicked",
G_CALLBACK (button_clicked), combo);
frame = gtk_aspect_frame_new (NULL, 0.5, 0.5, 1, FALSE);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
gtk_widget_show (frame);
gtk_container_add (GTK_CONTAINER (combo->priv->button), frame);
arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_ETCHED_IN);
gtk_widget_set_size_request (arrow, 10, 10);
gtk_widget_show (arrow);
gtk_container_add (GTK_CONTAINER (frame), arrow);
}
static void
moo_combo_destroy (GtkObject *object)
{
MooCombo *combo = MOO_COMBO (object);
combo->priv->button = NULL;
combo->entry = NULL;
if (combo->priv->model)
{
g_object_unref (combo->priv->model);
combo->priv->model = NULL;
}
if (combo->priv->popup)
{
gtk_widget_destroy (combo->priv->popup);
combo->priv->popup = NULL;
combo->priv->treeview = NULL;
}
if (combo->priv->size_group)
{
g_object_unref (combo->priv->size_group);
combo->priv->size_group = NULL;
}
GTK_OBJECT_CLASS(moo_combo_parent_class)->destroy (object);
}
static void
moo_combo_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MooCombo *combo = MOO_COMBO (object);
switch (prop_id)
{
case PROP_ACTIVATES_DEFAULT:
gtk_entry_set_activates_default (GTK_ENTRY (combo->entry),
g_value_get_boolean (value));
break;
case PROP_USE_BUTTON:
moo_combo_set_use_button (combo, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
moo_combo_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MooCombo *combo = MOO_COMBO (object);
switch (prop_id)
{
case PROP_ACTIVATES_DEFAULT:
g_value_set_boolean (value, gtk_entry_get_activates_default (GTK_ENTRY (combo->entry)));
break;
case PROP_USE_BUTTON:
g_value_set_boolean (value, combo->priv->use_button);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
moo_combo_finalize (GObject *object)
{
MooCombo *combo = MOO_COMBO (object);
gtk_tree_row_reference_free (combo->priv->active_row);
g_free (combo->priv);
G_OBJECT_CLASS (moo_combo_parent_class)->finalize (object);
}
GtkWidget*
moo_combo_new (void)
{
return g_object_new (MOO_TYPE_COMBO, NULL);
}
static void
create_popup (MooCombo *combo)
{
GtkWidget *scrolled_window, *frame;
GtkTreeSelection *selection;
combo->priv->popup = gtk_window_new (GTK_WINDOW_POPUP);
gtk_widget_set_size_request (combo->priv->popup, -1, -1);
gtk_window_set_default_size (GTK_WINDOW (combo->priv->popup), 1, 1);
gtk_window_set_resizable (GTK_WINDOW (combo->priv->popup), FALSE);
gtk_widget_add_events (combo->priv->popup, GDK_KEY_PRESS_MASK | GDK_BUTTON_PRESS_MASK);
combo->priv->column = gtk_tree_view_column_new ();
combo->priv->treeview = GTK_TREE_VIEW (gtk_tree_view_new ());
gtk_widget_set_size_request (GTK_WIDGET (combo->priv->treeview), -1, -1);
gtk_tree_view_append_column (combo->priv->treeview, combo->priv->column);
gtk_tree_view_set_headers_visible (combo->priv->treeview, FALSE);
#if GTK_CHECK_VERSION(2,6,0)
gtk_tree_view_set_hover_selection (combo->priv->treeview, TRUE);
#endif
selection = gtk_tree_view_get_selection (combo->priv->treeview);
gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE);
scrolled_window = gtk_scrolled_window_new (NULL, NULL);
gtk_widget_set_size_request (scrolled_window, -1, -1);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window),
GTK_SHADOW_ETCHED_IN);
/* a nasty hack to get the completions treeview to size nicely */
gtk_widget_set_size_request (GTK_SCROLLED_WINDOW (scrolled_window)->vscrollbar, -1, 0);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_window), GTK_SHADOW_NONE);
gtk_container_add (GTK_CONTAINER (scrolled_window), GTK_WIDGET (combo->priv->treeview));
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (frame), scrolled_window);
gtk_widget_show_all (frame);
gtk_container_add (GTK_CONTAINER (combo->priv->popup), frame);
}
void
moo_combo_popup (MooCombo *combo)
{
g_return_if_fail (MOO_IS_COMBO (combo));
g_signal_emit (combo, signals[POPUP], 0);
}
void
moo_combo_popdown (MooCombo *combo)
{
g_return_if_fail (MOO_IS_COMBO (combo));
g_signal_emit (combo, signals[POPDOWN], 0);
}
/* XXX _gtk_entry_get_borders from gtkentry.c */
static void
entry_get_borders (GtkEntry *entry,
gint *xborder,
gint *yborder)
{
GtkWidget *widget = GTK_WIDGET (entry);
gint focus_width;
gboolean interior_focus;
gtk_widget_style_get (widget,
"interior-focus", &interior_focus,
"focus-line-width", &focus_width,
NULL);
if (entry->has_frame)
{
*xborder = widget->style->xthickness;
*yborder = widget->style->ythickness;
}
else
{
*xborder = 0;
*yborder = 0;
}
if (!interior_focus)
{
*xborder += focus_width;
*yborder += focus_width;
}
}
static gboolean
model_is_empty (GtkTreeModel *model)
{
GtkTreeIter iter;
return !gtk_tree_model_get_iter_first (model, &iter);
}
static void
moo_combo_popup_real (MooCombo *combo)
{
GtkWidget *window;
int selected;
if (moo_combo_popup_shown (combo))
return;
if (model_is_empty (combo->priv->model))
return;
window = gtk_widget_get_toplevel (GTK_WIDGET (combo->entry));
g_return_if_fail (GTK_IS_WINDOW (window));
gtk_widget_realize (combo->priv->popup);
if (GTK_WINDOW (window)->group)
gtk_window_group_add_window (GTK_WINDOW (window)->group,
GTK_WINDOW (window));
gtk_window_set_modal (GTK_WINDOW (combo->priv->popup), TRUE);
resize_popup (combo);
selected = popup_get_selected (combo);
gtk_widget_show (combo->priv->popup);
/* treeview selects something on focus */
if (selected < 0)
{
GtkTreeSelection *selection = gtk_tree_view_get_selection (combo->priv->treeview);
gtk_tree_selection_unselect_all (selection);
}
gtk_widget_ensure_style (GTK_WIDGET (combo->priv->treeview));
gtk_widget_modify_bg (GTK_WIDGET (combo->priv->treeview), GTK_STATE_ACTIVE,
&GTK_WIDGET(combo->priv->treeview)->style->base[GTK_STATE_SELECTED]);
gtk_widget_modify_base (GTK_WIDGET (combo->priv->treeview), GTK_STATE_ACTIVE,
&GTK_WIDGET(combo->priv->treeview)->style->base[GTK_STATE_SELECTED]);
gtk_grab_add (combo->priv->popup);
gdk_pointer_grab (combo->priv->popup->window, TRUE,
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK,
NULL, NULL, GDK_CURRENT_TIME);
g_signal_connect_swapped (combo->entry, "focus-out-event",
G_CALLBACK (entry_focus_out), combo);
g_signal_connect_swapped (combo->priv->popup, "button-press-event",
G_CALLBACK (popup_button_press), combo);
g_signal_connect_swapped (combo->priv->popup, "key-press-event",
G_CALLBACK (popup_key_press_cb), combo);
g_signal_connect_swapped (combo->priv->treeview, "button-press-event",
G_CALLBACK (list_button_press), combo);
}
static void
moo_combo_popdown_real (MooCombo *combo)
{
if (!moo_combo_popup_shown (combo))
return;
g_signal_handlers_disconnect_by_func (combo->entry,
(gpointer) entry_focus_out,
combo);
g_signal_handlers_disconnect_by_func (combo->priv->popup,
(gpointer) popup_button_press,
combo);
g_signal_handlers_disconnect_by_func (combo->priv->popup,
(gpointer) popup_key_press_cb,
combo);
g_signal_handlers_disconnect_by_func (combo->priv->treeview,
(gpointer) list_button_press,
combo);
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (combo->priv->popup);
gtk_widget_hide (combo->priv->popup);
}
void
moo_combo_update_popup (MooCombo *combo)
{
g_return_if_fail (MOO_IS_COMBO (combo));
if (moo_combo_popup_shown (combo))
resize_popup (combo);
}
static gboolean
count_separators (GtkTreeModel *model,
G_GNUC_UNUSED GtkTreePath *path,
GtkTreeIter *iter,
gpointer user_data)
{
struct {
MooCombo *combo;
int count;
} *data = user_data;
if (data->combo->priv->row_separator_func (model, iter, data->combo->priv->row_separator_data))
data->count++;
return FALSE;
}
/* XXX gtk_entry_resize_popup from gtkentrycompletion.c */
static gboolean
resize_popup (MooCombo *combo)
{
GtkWidget *widget = GTK_WIDGET (combo->entry);
int x, y;
int matches, items, height, x_border, y_border;
GdkScreen *screen;
int monitor_num;
GdkRectangle monitor;
GtkRequisition popup_req;
GtkRequisition combo_req;
gboolean above;
int width;
int separator_height = 0;
int selected;
g_return_val_if_fail (GTK_WIDGET_REALIZED (combo->entry), FALSE);
gdk_window_get_origin (widget->window, &x, &y);
/* XXX */
entry_get_borders (GTK_ENTRY (combo->entry), &x_border, &y_border);
matches = gtk_tree_model_iter_n_children (combo->priv->model, NULL);
/* XXX */
if (combo->priv->row_separator_func)
{
struct {
MooCombo *combo;
int count;
} data = {combo, 0};
int focus_line_width;
gtk_tree_model_foreach (combo->priv->model,
(GtkTreeModelForeachFunc) count_separators,
&data);
if (data.count)
{
matches -= data.count;
gtk_widget_style_get (GTK_WIDGET (combo->priv->treeview),
"horizontal-separator", &separator_height,
"focus-line-width", &focus_line_width, NULL);
separator_height *= data.count;
separator_height += 2 * data.count * focus_line_width;
}
}
items = MIN (matches, MAX_POPUP_LEN);
gtk_tree_view_column_cell_get_size (combo->priv->column, NULL,
NULL, NULL, NULL, &height);
screen = gtk_widget_get_screen (widget);
monitor_num = gdk_screen_get_monitor_at_window (screen, widget->window);
gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
width = MIN (GTK_WIDGET(combo)->allocation.width, monitor.width) - 2 * x_border;
gtk_widget_set_size_request (GTK_WIDGET (combo->priv->treeview), width,
separator_height + items * height);
gtk_widget_set_size_request (combo->priv->popup, -1, -1);
gtk_widget_size_request (combo->priv->popup, &popup_req);
gtk_widget_size_request (widget, &combo_req);
if (x < monitor.x)
x = monitor.x;
else if (x + popup_req.width > monitor.x + monitor.width)
x = monitor.x + monitor.width - popup_req.width;
if (y + combo_req.height + popup_req.height <= monitor.y + monitor.height)
{
y += combo_req.height;
above = FALSE;
}
else
{
y -= popup_req.height;
above = TRUE;
}
gtk_window_move (GTK_WINDOW (combo->priv->popup), x, y);
selected = popup_get_selected (combo);
if (selected >= 0)
{
GtkTreePath *path = gtk_tree_path_new_from_indices (selected, -1);
gtk_tree_view_scroll_to_cell (combo->priv->treeview, path, NULL, FALSE, 0, 0);
gtk_tree_path_free (path);
}
return above;
}
static gboolean
entry_focus_out (MooCombo *combo)
{
moo_combo_popdown (combo);
return FALSE;
}
static gboolean
popup_button_press (MooCombo *combo,
GdkEventButton *event)
{
if (event->window == combo->priv->popup->window)
{
gint width, height;
gdk_drawable_get_size (GDK_DRAWABLE (event->window),
&width, &height);
if (event->x < 0 || event->x >= width ||
event->y < 0 || event->y >= height)
{
moo_combo_popdown (combo);
}
}
else
{
moo_combo_popdown (combo);
return FALSE;
}
return TRUE;
}
static int
popup_get_selected (MooCombo *combo)
{
int ind;
GtkTreeIter iter;
GtkTreePath *path;
GtkTreeView *treeview = combo->priv->treeview;
GtkTreeSelection *selection = gtk_tree_view_get_selection (treeview);
if (gtk_tree_selection_get_selected (selection, NULL, &iter))
{
path = gtk_tree_model_get_path (combo->priv->model, &iter);
g_return_val_if_fail (path != NULL, -1);
ind = gtk_tree_path_get_indices (path)[0];
gtk_tree_path_free (path);
return ind;
}
else
{
return -1;
}
}
static void
popup_move_selection (MooCombo *combo,
GdkEventKey *event)
{
int n_items, current_item, new_item = -1;
GtkTreePath *path;
n_items = gtk_tree_model_iter_n_children (combo->priv->model, NULL);
g_return_if_fail (n_items != 0);
current_item = popup_get_selected (combo);
switch (event->keyval)
{
case GDK_Down:
case GDK_KP_Down:
if (current_item < n_items - 1)
new_item = current_item + 1;
else
new_item = -1;
break;
case GDK_Up:
case GDK_KP_Up:
if (current_item < 0)
new_item = n_items - 1;
else
new_item = current_item - 1;
break;
case GDK_Page_Down:
case GDK_KP_Page_Down:
new_item = current_item + MAX_POPUP_LEN - 1;
if (new_item >= n_items)
new_item = n_items - 1;
break;
case GDK_Page_Up:
case GDK_KP_Page_Up:
new_item = current_item - MAX_POPUP_LEN + 1;
if (new_item < 0)
new_item = 0;
break;
case GDK_Tab:
case GDK_KP_Tab:
if (current_item < n_items - 1)
new_item = current_item + 1;
else
new_item = 0;
break;
case GDK_ISO_Left_Tab:
if (current_item <= 0)
new_item = n_items - 1;
else
new_item = current_item - 1;
break;
default:
g_return_if_reached ();
}
if (new_item >= 0 && new_item < n_items)
{
path = gtk_tree_path_new_from_indices (new_item, -1);
gtk_tree_view_set_cursor (combo->priv->treeview, path, NULL, FALSE);
gtk_tree_view_scroll_to_cell (combo->priv->treeview, path, NULL, FALSE, 0, 0);
gtk_tree_path_free (path);
}
else
{
gtk_tree_selection_unselect_all (gtk_tree_view_get_selection (combo->priv->treeview));
}
}
static void
popup_select_iter (MooCombo *combo,
GtkTreeIter *iter)
{
char *text;
text = moo_combo_get_text_at_iter (combo, iter);
g_return_if_fail (text != NULL);
g_signal_handlers_block_by_func (combo->entry,
(gpointer) entry_changed, combo);
moo_entry_begin_undo_group (MOO_ENTRY (combo->entry));
moo_combo_popdown (combo);
gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
gtk_editable_set_position (GTK_EDITABLE (combo->entry), -1);
moo_entry_end_undo_group (MOO_ENTRY (combo->entry));
g_signal_handlers_unblock_by_func (combo->entry,
(gpointer) entry_changed, combo);
moo_combo_set_active_iter (combo, iter);
g_free (text);
}
char*
moo_combo_get_text_at_iter (MooCombo *combo,
GtkTreeIter *iter)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), NULL);
return combo->priv->get_text_func (combo->priv->model, iter,
combo->priv->get_text_data);
}
static gboolean
popup_return_key (MooCombo *combo)
{
GtkTreeIter iter;
GtkTreeView *treeview = combo->priv->treeview;
GtkTreeSelection *selection = gtk_tree_view_get_selection (treeview);
if (gtk_tree_selection_get_selected (selection, NULL, &iter))
popup_select_iter (combo, &iter);
else
moo_combo_popdown (combo);
return TRUE;
}
static gboolean
moo_combo_popup_key_press (MooCombo *combo,
GdkEventKey *event)
{
switch (event->keyval)
{
case GDK_Down:
case GDK_Up:
case GDK_KP_Down:
case GDK_KP_Up:
case GDK_Page_Down:
case GDK_Page_Up:
case GDK_Tab:
case GDK_KP_Tab:
case GDK_ISO_Left_Tab:
popup_move_selection (combo, event);
return TRUE;
case GDK_Escape:
moo_combo_popdown (combo);
return TRUE;
case GDK_Return:
case GDK_ISO_Enter:
case GDK_KP_Enter:
return popup_return_key (combo);
default:
return gtk_widget_event (combo->entry, (GdkEvent*) event) ||
gtk_widget_event (GTK_WIDGET (combo), (GdkEvent*) event);
}
}
static gboolean
popup_key_press_cb (MooCombo *combo,
GdkEventKey *event)
{
gboolean retval;
g_signal_emit (combo, signals[POPUP_KEY_PRESS], 0, event, &retval);
return retval;
}
static gboolean
list_button_press (MooCombo *combo,
GdkEventButton *event)
{
GtkTreePath *path;
GtkTreeIter iter;
if (gtk_tree_view_get_path_at_pos (combo->priv->treeview,
event->x, event->y,
&path, NULL, NULL, NULL))
{
gtk_tree_model_get_iter (combo->priv->model, &iter, path);
if (!combo->priv->row_separator_func ||
!combo->priv->row_separator_func (combo->priv->model, &iter,
combo->priv->row_separator_data))
{
popup_select_iter (combo, &iter);
moo_combo_popdown (combo);
gtk_tree_path_free (path);
return TRUE;
}
gtk_tree_path_free (path);
}
return FALSE;
}
GtkTreeModel*
moo_combo_get_model (MooCombo *combo)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), NULL);
return combo->priv->model;
}
void
moo_combo_set_model (MooCombo *combo,
GtkTreeModel *model)
{
g_return_if_fail (MOO_IS_COMBO (combo));
g_return_if_fail (!model || GTK_IS_TREE_MODEL (model));
if (model == combo->priv->model)
return;
if (combo->priv->model)
{
g_object_unref (combo->priv->model);
gtk_tree_view_set_model (combo->priv->treeview, NULL);
combo->priv->model = NULL;
}
if (model)
{
combo->priv->model = model;
g_object_ref (combo->priv->model);
gtk_tree_view_set_model (combo->priv->treeview, combo->priv->model);
}
moo_combo_update_popup (combo);
if (combo->priv->active_row)
{
gtk_tree_row_reference_free (combo->priv->active_row);
combo->priv->active_row = NULL;
moo_combo_changed (combo);
}
}
void
moo_combo_set_text_column (MooCombo *combo,
int column)
{
g_return_if_fail (MOO_IS_COMBO (combo));
g_return_if_fail (column >= 0);
combo->priv->text_column = column;
if (combo->priv->text_cell)
{
gtk_tree_view_column_clear_attributes (combo->priv->column, combo->priv->text_cell);
}
else
{
combo->priv->text_cell = gtk_cell_renderer_text_new ();
gtk_tree_view_column_pack_start (combo->priv->column, combo->priv->text_cell, TRUE);
}
gtk_tree_view_column_set_attributes (combo->priv->column, combo->priv->text_cell,
"text", combo->priv->text_column, NULL);
}
int
moo_combo_get_text_column (MooCombo *combo)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), -1);
return combo->priv->text_column;
}
void
moo_combo_set_get_text_func (MooCombo *combo,
MooComboGetTextFunc func,
gpointer data)
{
g_return_if_fail (MOO_IS_COMBO (combo));
if (func)
{
combo->priv->get_text_func = func;
combo->priv->get_text_data = data;
}
else
{
combo->priv->get_text_func = default_get_text_func;
combo->priv->get_text_data = combo;
}
}
static char*
default_get_text_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer data)
{
char *text = NULL;
MooCombo *combo = data;
gtk_tree_model_get (model, iter, combo->priv->text_column, &text, -1);
return text;
}
GtkWidget*
moo_combo_new_text (void)
{
GtkWidget *combo;
GtkListStore *store;
store = gtk_list_store_new (1, G_TYPE_STRING);
combo = moo_combo_new ();
moo_combo_set_model (MOO_COMBO (combo), GTK_TREE_MODEL (store));
moo_combo_set_text_column (MOO_COMBO (combo), 0);
g_object_unref (store);
return combo;
}
void
moo_combo_add_text (MooCombo *combo,
const char *text)
{
GtkTreeIter iter;
g_return_if_fail (MOO_IS_COMBO (combo));
g_return_if_fail (text != NULL);
g_return_if_fail (GTK_IS_LIST_STORE (combo->priv->model));
gtk_list_store_append (GTK_LIST_STORE (combo->priv->model), &iter);
gtk_list_store_set (GTK_LIST_STORE (combo->priv->model), &iter,
combo->priv->text_column, text, -1);
}
static void
button_clicked (MooCombo *combo)
{
if (moo_combo_popup_shown (combo))
moo_combo_popdown (combo);
else
moo_combo_popup (combo);
}
gboolean
moo_combo_popup_shown (MooCombo *combo)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), FALSE);
return combo->priv->popup && GTK_WIDGET_MAPPED (combo->priv->popup);
}
static void
moo_combo_unmap (GtkWidget *widget)
{
moo_combo_popdown (MOO_COMBO (widget));
GTK_WIDGET_CLASS(moo_combo_parent_class)->unmap (widget);
}
static void
moo_combo_unrealize (GtkWidget *widget)
{
moo_combo_popdown (MOO_COMBO (widget));
gtk_widget_unrealize (MOO_COMBO (widget)->priv->popup);
GTK_WIDGET_CLASS(moo_combo_parent_class)->unrealize (widget);
}
void
moo_combo_entry_set_text (MooCombo *combo,
const char *text)
{
g_return_if_fail (MOO_IS_COMBO (combo));
g_return_if_fail (text != NULL);
gtk_entry_set_text (GTK_ENTRY (combo->entry), text);
}
const char*
moo_combo_entry_get_text (MooCombo *combo)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), NULL);
return gtk_entry_get_text (GTK_ENTRY (combo->entry));
}
void
moo_combo_select_region (MooCombo *combo,
int start,
int end)
{
g_return_if_fail (MOO_IS_COMBO (combo));
gtk_editable_select_region (GTK_EDITABLE (combo->entry), start, end);
}
static void
moo_combo_cell_layout_pack_start (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
gtk_tree_view_column_pack_start (MOO_COMBO (cell_layout)->priv->column,
cell, expand);
}
static void
moo_combo_cell_layout_pack_end (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gboolean expand)
{
gtk_tree_view_column_pack_end (MOO_COMBO (cell_layout)->priv->column,
cell, expand);
}
static void
moo_combo_cell_layout_clear (GtkCellLayout *cell_layout)
{
gtk_tree_view_column_clear (MOO_COMBO (cell_layout)->priv->column);
}
static void
moo_combo_cell_layout_add_attribute (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
const gchar *attribute,
gint column)
{
gtk_tree_view_column_add_attribute (MOO_COMBO (cell_layout)->priv->column,
cell, attribute, column);
}
static void
moo_combo_cell_layout_set_cell_data_func (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
GtkCellLayoutDataFunc func,
gpointer func_data,
GDestroyNotify destroy)
{
gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (MOO_COMBO (cell_layout)->priv->column),
cell, func, func_data, destroy);
}
static void
moo_combo_cell_layout_clear_attributes (GtkCellLayout *cell_layout,
GtkCellRenderer *cell)
{
gtk_tree_view_column_clear_attributes (MOO_COMBO (cell_layout)->priv->column, cell);
}
static void
moo_combo_cell_layout_reorder (GtkCellLayout *cell_layout,
GtkCellRenderer *cell,
gint position)
{
gtk_cell_layout_reorder (GTK_CELL_LAYOUT (MOO_COMBO (cell_layout)->priv->column),
cell, position);
}
void
moo_combo_set_use_button (MooCombo *combo,
gboolean use)
{
g_return_if_fail (MOO_IS_COMBO (combo));
use = use ? TRUE : FALSE;
if (use == combo->priv->use_button)
return;
if (use)
{
create_arrow_button (combo);
}
else
{
g_signal_handlers_disconnect_by_func (combo->priv->button,
(gpointer) button_clicked,
combo);
gtk_container_remove (GTK_CONTAINER (combo), combo->priv->button);
combo->priv->button = NULL;
}
}
void
moo_combo_set_active_iter (MooCombo *combo,
GtkTreeIter *iter)
{
GtkTreePath *path;
g_return_if_fail (MOO_IS_COMBO (combo));
g_return_if_fail (combo->priv->model != NULL && iter != NULL);
if (combo->priv->active_row)
gtk_tree_row_reference_free (combo->priv->active_row);
path = gtk_tree_model_get_path (combo->priv->model, iter);
combo->priv->active_row = gtk_tree_row_reference_new (combo->priv->model, path);
if (!combo->priv->active_row || !gtk_tree_row_reference_valid (combo->priv->active_row))
{
gtk_tree_row_reference_free (combo->priv->active_row);
combo->priv->active_row = NULL;
g_return_if_reached ();
}
moo_combo_changed (combo);
gtk_tree_path_free (path);
}
gboolean
moo_combo_get_active_iter (MooCombo *combo,
GtkTreeIter *iter)
{
g_return_val_if_fail (MOO_IS_COMBO (combo), FALSE);
if (!combo->priv->active_row)
return FALSE;
if (!gtk_tree_row_reference_valid (combo->priv->active_row))
{
gtk_tree_row_reference_free (combo->priv->active_row);
combo->priv->active_row = NULL;
return FALSE;
}
if (iter)
{
GtkTreePath *path;
path = gtk_tree_row_reference_get_path (combo->priv->active_row);
g_return_val_if_fail (path != NULL, FALSE);
gtk_tree_model_get_iter (combo->priv->model, iter, path);
gtk_tree_path_free (path);
}
return TRUE;
}
static void
moo_combo_changed (MooCombo *combo)
{
g_signal_emit (combo, signals[CHANGED], 0);
}
static void
entry_changed (MooCombo *combo)
{
GtkTreeIter iter;
if (moo_combo_get_active_iter (combo, &iter))
{
char *text = moo_combo_get_text_at_iter (combo, &iter);
const char *entry_text = gtk_entry_get_text (GTK_ENTRY (combo->entry));
g_return_if_fail (text != NULL);
if (strcmp (text, entry_text))
{
gtk_tree_row_reference_free (combo->priv->active_row);
combo->priv->active_row = NULL;
moo_combo_changed (combo);
}
g_free (text);
}
else
{
moo_combo_changed (combo);
}
}
void
moo_combo_set_row_separator_func (MooCombo *combo,
MooComboRowSeparatorFunc func,
gpointer data)
{
g_return_if_fail (MOO_IS_COMBO (combo));
gtk_tree_view_set_row_separator_func (combo->priv->treeview, func, data, NULL);
combo->priv->row_separator_func = func;
combo->priv->row_separator_data = data;
}
static gboolean
moo_combo_focus (GtkWidget *widget,
GtkDirectionType direction)
{
MooCombo *combo = MOO_COMBO (widget);
return gtk_widget_child_focus (combo->entry, direction);
}
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