/*
* Evolution internal utilities - Glade dialog widget utilities
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Federico Mena-Quintero <federico@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <config.h>
#include <math.h>
#include <string.h>
#include <time.h>
#include <gtk/gtk.h>
#include "e-dialog-widgets.h"
/* A widget, a pointer to the variable it will modify, and extra information */
typedef struct {
GtkWidget *widget;
gpointer value_var;
gpointer info;
} WidgetHook;
/* Hook information for a complete dialog */
typedef struct {
GSList *whooks;
} DialogHooks;
/* Destroy handler for the dialog; frees the dialog hooks */
static void
dialog_destroy_cb (DialogHooks *hooks, GObject *dialog)
{
g_slist_free (hooks->whooks);
hooks->whooks = NULL;
g_free (hooks);
g_object_set_data (dialog, "dialog-hooks", NULL);
}
/* Ensures that the dialog has the necessary attached data to store the widget
* hook information.
*/
static DialogHooks *
get_dialog_hooks (GtkWidget *dialog)
{
DialogHooks *hooks;
hooks = g_object_get_data ((GObject *) dialog, "dialog-hooks");
if (!hooks) {
hooks = g_new0 (DialogHooks, 1);
g_object_set_data ((GObject *) dialog, "dialog-hooks", hooks);
g_object_weak_ref ((GObject *) dialog, (GWeakNotify) dialog_destroy_cb, hooks);
}
return hooks;
}
/* Converts an mapped value to the appropriate index in an item group. The
* values for the items are provided as a -1-terminated array.
*/
static int
value_to_index (const int *value_map, int value)
{
int i;
for (i = 0; value_map[i] != -1; i++)
if (value_map[i] == value)
return i;
return -1;
}
/* Converts an index in an item group to the appropriate mapped value. See the
* function above.
*/
static int
index_to_value (const int *value_map, int index)
{
int i;
/* We do this the hard way, i.e. not as a simple array reference, to
* check for correctness.
*/
for (i = 0; value_map[i] != -1; i++)
if (i == index)
return value_map[i];
return -1;
}
/* Hooks a radio button group */
static void
hook_radio (GtkWidget *dialog, GtkRadioButton *radio, gpointer value_var, gpointer info)
{
const int *value_map;
int *value;
/* Set the value */
value = (int *) value_var;
value_map = (const int *) info;
e_dialog_radio_set (GTK_WIDGET (radio), *value, value_map);
}
/* Gets the value of a radio button group */
static void
get_radio_value (GtkRadioButton *radio, gpointer value_var, gpointer info)
{
int *value;
const int *value_map;
value = (int *) value_var;
value_map = (const int *) info;
*value = e_dialog_radio_get (GTK_WIDGET (radio), value_map);
}
/* Hooks a toggle button */
static void
hook_toggle (GtkWidget *dialog, GtkToggleButton *toggle, gpointer value_var, gpointer info)
{
gboolean *value;
/* Set the value */
value = (gboolean *) value_var;
e_dialog_toggle_set (GTK_WIDGET (toggle), *value);
}
/* Gets the value of a toggle button */
static void
get_toggle_value (GtkToggleButton *toggle, gpointer value_var, gpointer info)
{
gboolean *value;
value = (gboolean *) value_var;
*value = e_dialog_toggle_get (GTK_WIDGET (toggle));
}
/* Hooks a spin button */
static void
hook_spin_button (GtkWidget *dialog, GtkSpinButton *spin, gpointer value_var, gpointer info)
{
double *value;
GtkAdjustment *adj;
/* Set the value */
value = (double *) value_var;
e_dialog_spin_set (GTK_WIDGET (spin), *value);
/* Hook to changed */
adj = gtk_spin_button_get_adjustment (spin);
}
/* Gets the value of a spin button */
static void
get_spin_button_value (GtkSpinButton *spin, gpointer value_var, gpointer info)
{
double *value;
value = (double *) value_var;
*value = e_dialog_spin_get_double (GTK_WIDGET (spin));
}
/* Hooks a GtkEditable widget */
static void
hook_editable (GtkWidget *dialog, GtkEditable *editable, gpointer value_var, gpointer info)
{
char **value;
/* Set the value */
value = (char **) value_var;
e_dialog_editable_set (GTK_WIDGET (editable), *value);
}
/* Gets the value of a GtkEditable widget */
static void
get_editable_value (GtkEditable *editable, gpointer value_var, gpointer data)
{
char **value;
value = (char **) value_var;
if (*value)
g_free (*value);
*value = e_dialog_editable_get (GTK_WIDGET (editable));
}
/**
* e_dialog_editable_set:
* @widget: A #GtkEditable widget.
* @value: String value.
*
* Sets the string value inside a #GtkEditable-derived widget.
**/
void
e_dialog_editable_set (GtkWidget *widget, const char *value)
{
int pos = 0;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_EDITABLE (widget));
gtk_editable_delete_text (GTK_EDITABLE (widget), 0, -1);
if (value)
gtk_editable_insert_text (GTK_EDITABLE (widget), value, strlen (value), &pos);
}
/**
* e_dialog_editable_get:
* @widget: A #GtkEditable widget.
*
* Queries the string value inside a #GtkEditable-derived widget.
*
* Return value: String value. You should free it when you are done with it.
* This function can return NULL if the string could not be converted from
* GTK+'s encoding into UTF8.
**/
char *
e_dialog_editable_get (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_IS_EDITABLE (widget), NULL);
return gtk_editable_get_chars (GTK_EDITABLE (widget), 0, -1);
}
/**
* e_dialog_radio_set:
* @widget: A #GtkRadioButton in a radio button group.
* @value: Enumerated value.
* @value_map: Map from enumeration values to array indices.
*
* Sets the selected item in a radio group. The specified @widget can be any of
* the #GtkRadioButtons in the group. Each radio button should correspond to an
* enumeration value; the specified @value will be mapped to an integer from
* zero to the number of items in the group minus 1 by using a mapping table
* specified in @value_map. The last element in this table should be -1. Thus
* a table to map three possible interpolation values to integers could be
* specified as { NEAREST_NEIGHBOR, BILINEAR, HYPERBOLIC, -1 }.
**/
void
e_dialog_radio_set (GtkWidget *widget, int value, const int *value_map)
{
GSList *group, *l;
int i;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_RADIO_BUTTON (widget));
g_return_if_fail (value_map != NULL);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (widget));
i = value_to_index (value_map, value);
if (i != -1) {
/* Groups are built by prepending items, so the list ends up in reverse
* order; we need to flip the index around.
*/
i = g_slist_length (group) - i - 1;
l = g_slist_nth (group, i);
if (!l)
g_message ("e_dialog_radio_set(): could not find index %d in radio group!", i);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (l->data), TRUE);
} else
g_message ("e_dialog_radio_set(): could not find value %d in value map!", value);
}
/**
* e_dialog_radio_get:
* @widget: A #GtkRadioButton in a radio button group.
* @value_map: Map from enumeration values to array indices.
*
* Queries the selected item in a #GtkRadioButton group. Please read the
* description of e_dialog_radio_set() to see how @value_map maps enumeration
* values to button indices.
*
* Return value: Enumeration value which corresponds to the selected item in the
* radio group.
**/
int
e_dialog_radio_get (GtkWidget *widget, const int *value_map)
{
GSList *group, *l;
int i, v;
g_return_val_if_fail (widget != NULL, -1);
g_return_val_if_fail (GTK_IS_RADIO_BUTTON (widget), -1);
g_return_val_if_fail (value_map != NULL, -1);
group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (widget));
for (i = 0, l = group; l; l = l->next, i++) {
widget = GTK_WIDGET (l->data);
if (GTK_TOGGLE_BUTTON (widget)->active)
break;
}
g_return_val_if_fail (l != NULL, -1);
/* Groups are built by prepending items, so the list ends up in reverse
* order; we need to flip the index around.
*/
i = g_slist_length (group) - i - 1;
v = index_to_value (value_map, i);
if (v == -1) {
g_message ("e_dialog_radio_get(): could not find index %d in value map!", i);
return -1;
}
return v;
}
/**
* e_dialog_toggle_set:
* @widget: A #GtkToggleButton.
* @value: Toggle value.
*
* Sets the value of a #GtkToggleButton-derived widget. This should not be used
* for radio buttons; it is more convenient to use use e_dialog_radio_set()
* instead.
**/
void
e_dialog_toggle_set (GtkWidget *widget, gboolean value)
{
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), value);
}
/**
* e_dialog_toggle_get:
* @widget: A #GtkToggleButton.
*
* Queries the value of a #GtkToggleButton-derived widget. This should not be
* used for radio buttons; it is more convenient to use e_dialog_radio_get()
* instead.
*
* Return value: Toggle value.
**/
gboolean
e_dialog_toggle_get (GtkWidget *widget)
{
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_TOGGLE_BUTTON (widget), FALSE);
return GTK_TOGGLE_BUTTON (widget)->active;
}
/**
* e_dialog_spin_set:
* @widget: A #GtkSpinButton.
* @value: Numeric value.
*
* Sets the value of a #GtkSpinButton widget.
**/
void
e_dialog_spin_set (GtkWidget *widget, double value)
{
GtkAdjustment *adj;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_SPIN_BUTTON (widget));
adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
adj->value = value;
g_signal_emit_by_name (adj, "value_changed", 0);
}
/**
* e_dialog_spin_get_double:
* @widget: A #GtkSpinButton.
*
* Queries the floating-point value of a #GtkSpinButton widget.
*
* Return value: Numeric value.
**/
double
e_dialog_spin_get_double (GtkWidget *widget)
{
GtkAdjustment *adj;
g_return_val_if_fail (widget != NULL, 0.0);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), 0.0);
adj = gtk_spin_button_get_adjustment (GTK_SPIN_BUTTON (widget));
return adj->value;
}
/**
* e_dialog_spin_get_int:
* @widget: A #GtkSpinButton.
*
* Queries the integer value of a #GtkSpinButton widget.
*
* Return value: Numeric value.
**/
int
e_dialog_spin_get_int (GtkWidget *widget)
{
double value;
g_return_val_if_fail (widget != NULL, -1);
g_return_val_if_fail (GTK_IS_SPIN_BUTTON (widget), -1);
value = e_dialog_spin_get_double (widget);
return (int) floor (value);
}
/**
* e_dialog_combo_box_set:
* @widget: A #GtkComboBox.
* @value: Enumerated value.
* @value_map: Map from enumeration values to array indices.
*
* Sets the selected item in a #GtkComboBox. Please read the description of
* e_dialog_radio_set() to see how @value_map maps enumeration values to item
* indices.
**/
void
e_dialog_combo_box_set (GtkWidget *widget, int value, const int *value_map)
{
int i;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_COMBO_BOX (widget));
g_return_if_fail (value_map != NULL);
i = value_to_index (value_map, value);
if (i != -1)
gtk_combo_box_set_active (GTK_COMBO_BOX (widget), i);
else
g_message ("e_dialog_combo_box_set(): could not find value %d in value map!",
value);
}
/**
* e_dialog_combo_box_get:
* @widget: A #GtkComboBox.
* @value_map: Map from enumeration values to array indices.
*
* Queries the selected item in a #GtkComboBox. Please read the description
* of e_dialog_radio_set() to see how @value_map maps enumeration values to item
* indices.
*
* Return value: Enumeration value which corresponds to the selected item in the
* combo box.
**/
int
e_dialog_combo_box_get (GtkWidget *widget, const int *value_map)
{
int i;
g_return_val_if_fail (widget != NULL, -1);
g_return_val_if_fail (GTK_IS_COMBO_BOX (widget), -1);
g_return_val_if_fail (value_map != NULL, -1);
i = index_to_value (value_map, gtk_combo_box_get_active (GTK_COMBO_BOX (widget)));
if (i == -1) {
g_message ("e_dialog_combo_box_get(): could not find index %d in value map!", i);
return -1;
}
return i;
}
/**
* e_dialog_widget_hook_value:
* @dialog: Dialog box in which the @widget lives in.
* @widget: A widget that will control a variable.
* @value_var: Pointer to the variable that the @widget will control.
* @info: NULL for most widgets, or an integer value map array (see
* e_dialog_radio_set() for details).
*
* Hooks a widget from a dialog box to the variable it will modify. Supported
* widgets are: #GtkEditable (char *), #GtkRadioButton (int/value_map pair; see
* e_dialog_radio_set() for more information), #GtkTogglebutton (gboolean),
* #GtkSpinButton (double), #GtkOptionMenu (int/value_map pair), and
* #GnomeDateEdit (time_t).
*
* A pointer to the appropriate variable to modify should be passed in @value_var.
* For values that take a value_map array as well, it should be passed in @info.
*
* The widgets within a dialog that are hooked with this function will set their
* respective variables only when e_dialog_get_values() is called. The typical
* use is to call that function in the handler for the "OK" button of a dialog
* box.
*
* Return value: TRUE if the type of the specified @widget is supported, FALSE
* otherwise.
**/
gboolean
e_dialog_widget_hook_value (GtkWidget *dialog, GtkWidget *widget,
gpointer value_var, gpointer info)
{
DialogHooks *hooks;
WidgetHook *wh;
g_return_val_if_fail (dialog != NULL, FALSE);
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
g_return_val_if_fail (value_var != NULL, FALSE);
hooks = get_dialog_hooks (dialog);
/* First check if it is a "group" widget, like a radio button or an
* option menu. Then we check for normal ungrouped widgets.
*/
if (GTK_IS_RADIO_BUTTON (widget))
hook_radio (dialog, GTK_RADIO_BUTTON (widget), value_var, info);
else if (GTK_IS_TOGGLE_BUTTON (widget))
hook_toggle (dialog, GTK_TOGGLE_BUTTON (widget), value_var, info);
else if (GTK_IS_SPIN_BUTTON (widget))
hook_spin_button (dialog, GTK_SPIN_BUTTON (widget), value_var, info);
else if (GTK_IS_EDITABLE (widget))
hook_editable (dialog, GTK_EDITABLE (widget), value_var, info);
else
return FALSE;
wh = g_new (WidgetHook, 1);
wh->widget = widget;
wh->value_var = value_var;
wh->info = info;
hooks->whooks = g_slist_prepend (hooks->whooks, wh);
return TRUE;
}
/**
* e_dialog_get_values:
* @dialog: A dialog box whose widgets have been hooked to the appropriate
* variables with e_dialog_widget_hook_value().
*
* Makes every widget in a @dialog that was hooked with
* e_dialog_widget_hook_value() apply its value to its corresponding variable.
* The typical usage is to call this function in the handler for the "OK" button
* of a dialog box.
**/
void
e_dialog_get_values (GtkWidget *dialog)
{
DialogHooks *hooks;
GSList *l;
g_return_if_fail (dialog != NULL);
hooks = get_dialog_hooks (dialog);
for (l = hooks->whooks; l; l = l->next) {
WidgetHook *wh;
wh = l->data;
if (GTK_IS_RADIO_BUTTON (wh->widget))
get_radio_value (GTK_RADIO_BUTTON (wh->widget), wh->value_var, wh->info);
else if (GTK_IS_TOGGLE_BUTTON (wh->widget))
get_toggle_value (GTK_TOGGLE_BUTTON (wh->widget), wh->value_var, wh->info);
else if (GTK_IS_SPIN_BUTTON (wh->widget))
get_spin_button_value (GTK_SPIN_BUTTON (wh->widget), wh->value_var, wh->info);
else if (GTK_IS_EDITABLE (wh->widget))
get_editable_value (GTK_EDITABLE (wh->widget), wh->value_var, wh->info);
else
g_return_if_reached ();
}
}
/**
* e_dialog_xml_widget_hook_value:
* @xml: Glade XML description of a dialog box.
* @dialog: Dialog box in which the widget lives in.
* @widget_name: Name of the widget in the Glade XML data.
* @value_var: Pointer to the variable that the widget will control.
* @info: NULL for most widgets, or an integer value map array (see
* e_dialog_radio_set() for details).
*
* Similar to e_dialog_widget_hook_value(), but uses the widget from a #GladeXML
* data structure.
*
* Return value: TRUE if the type of the specified widget is supported, FALSE
* otherwise.
**/
gboolean
e_dialog_xml_widget_hook_value (GladeXML *xml, GtkWidget *dialog, const char *widget_name,
gpointer value_var, gpointer info)
{
GtkWidget *widget;
g_return_val_if_fail (xml != NULL, FALSE);
g_return_val_if_fail (GLADE_IS_XML (xml), FALSE);
g_return_val_if_fail (dialog != NULL, FALSE);
g_return_val_if_fail (widget_name != NULL, FALSE);
g_return_val_if_fail (value_var != NULL, FALSE);
widget = glade_xml_get_widget (xml, widget_name);
if (!widget) {
g_message ("e_dialog_xml_widget_hook_value(): could not find widget `%s' in "
"Glade data!", widget_name);
return FALSE;
}
return e_dialog_widget_hook_value (dialog, widget, value_var, info);
}
