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/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* py-command-line.c: Simple wrapper around GtkEntry with history support
*
* Author: Zbigniew Chyla (cyba@gnome.pl)
*/
#include <gnumeric-config.h>
#include "py-command-line.h"
#include "gnm-python.h"
#include <gnumeric.h>
#include <gutils.h>
#include <goffice/goffice.h>
#include <goffice/app/module-plugin-defs.h>
#include <gsf/gsf-impl-utils.h>
#include <glib-object.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <string.h>
#define MAX_HISTORY_SIZE 100
struct _GnmPyCommandLine {
GtkEntry parent;
GList *history, *history_tail, *history_cur;
gboolean editing;
int history_size;
};
typedef struct {
GtkEntryClass parent_class;
void (*entered) (GnmPyCommandLine *cline);
} GnmPyCommandLineClass;
enum {
ENTERED_SIGNAL,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static GObjectClass *parent_class = NULL;
static void
gnm_py_command_line_changed (GnmPyCommandLine *cline)
{
cline->editing = TRUE;
}
static gint
gnm_py_command_line_keypress (GnmPyCommandLine *cline, GdkEventKey *event, gpointer user_data)
{
switch (event->keyval) {
case GDK_Return: {
const char *text;
text = gtk_entry_get_text (GTK_ENTRY (cline));
if (cline->history_tail == NULL) {
cline->history = g_list_append (NULL, g_strdup (text));
cline->history_tail = cline->history;
} else if (text[0] != '\0' && strcmp (text, cline->history_tail->data) != 0) {
cline->history_tail =
g_list_append (cline->history_tail,
g_strdup (text))->next;
}
if (cline->history_size == MAX_HISTORY_SIZE) {
g_free (cline->history->data);
cline->history = g_list_delete_link (cline->history, cline->history);
} else {
cline->history_size++;
}
g_signal_emit (cline, signals[ENTERED_SIGNAL], 0);
gtk_entry_set_text (GTK_ENTRY (cline), "");
cline->editing = TRUE;
break;
}
case GDK_Up:
if (cline->editing) {
if (cline->history_tail != NULL) {
cline->history_cur = cline->history_tail;
gtk_entry_set_text (GTK_ENTRY (cline), cline->history_cur->data);
gtk_editable_set_position (
GTK_EDITABLE (cline), strlen (cline->history_cur->data));
cline->editing = FALSE;
}
} else {
if (cline->history_cur->prev != NULL) {
cline->history_cur = cline->history_cur->prev;
gtk_entry_set_text (GTK_ENTRY (cline), cline->history_cur->data);
gtk_editable_set_position (
GTK_EDITABLE (cline), strlen (cline->history_cur->data));
cline->editing = FALSE;
}
}
break;
case GDK_Down:
if (!cline->editing) {
if (cline->history_cur->next != NULL) {
cline->history_cur = cline->history_cur->next;
gtk_entry_set_text (GTK_ENTRY (cline), cline->history_cur->data);
gtk_editable_set_position (
GTK_EDITABLE (cline), strlen (cline->history_cur->data));
cline->editing = FALSE;
} else {
gtk_entry_set_text (GTK_ENTRY (cline), "");
cline->editing = TRUE;
}
}
break;
default:
return FALSE;
}
g_signal_stop_emission_by_name (cline, "key_press_event");
return TRUE;
}
static void
gnm_py_command_line_init (GnmPyCommandLine *cline)
{
g_signal_connect (
cline, "key_press_event",
G_CALLBACK (gnm_py_command_line_keypress), NULL);
g_signal_connect (
cline, "changed",
G_CALLBACK (gnm_py_command_line_changed), NULL);
cline->history = cline->history_tail = NULL;
cline->history_cur = NULL;
cline->editing = TRUE;
cline->history_size = 0;
}
static void
gnm_py_command_line_finalize (GObject *obj)
{
GnmPyCommandLine *cline = GNM_PY_COMMAND_LINE (obj);
go_list_free_custom (cline->history, g_free);
cline->history = NULL;
parent_class->finalize (obj);
}
static void
gnm_py_command_line_class_init (GObjectClass *gobject_class)
{
parent_class = g_type_class_peek_parent (gobject_class);
gobject_class->finalize = gnm_py_command_line_finalize;
signals[ENTERED_SIGNAL] =
g_signal_new (
"entered",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GnmPyCommandLineClass, entered),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
GtkWidget *
gnm_py_command_line_new (void)
{
return g_object_new (GNM_PY_COMMAND_LINE_TYPE, NULL);
}
GSF_DYNAMIC_CLASS (GnmPyCommandLine, gnm_py_command_line,
gnm_py_command_line_class_init, gnm_py_command_line_init,
GTK_TYPE_ENTRY)
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