path: root/src/tree.c

/*
 * tree.c
 *
 * Copyright (C) 2002 Sun Microsystems, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors: Glynn Foster <glynn.foster@sun.com>
 *          Jonathan Blanford <jrb@redhat.com>
 *          Kristian Rietveld <kris@gtk.org>
 */

#include <glade/glade.h>
#include "zenity.h"
#include "util.h"

#define MAX_ELEMENTS_BEFORE_SCROLLING 8

static GladeXML *glade_dialog;
static GSList *selected;
static gchar *separator;

static void zenity_tree_dialog_response (GtkWidget *widget, int response, gpointer data);

static void
zenity_tree_toggled_callback (GtkCellRendererToggle *cell, gchar *path_string, gpointer data)
{
	GtkTreeModel *model;
	GtkTreeIter iter;
	GtkTreePath *path;
	gboolean value;

	model = GTK_TREE_MODEL (data);
	path = gtk_tree_path_new_from_string (path_string);

	gtk_tree_model_get_iter (model, &iter, path);
	gtk_tree_model_get (model, &iter, 0, &value, -1);

	value = !value;
	gtk_list_store_set (GTK_LIST_STORE (model), &iter, 0, value, -1);

	gtk_tree_path_free (path);
}

static void
zenity_tree_fill_entries (GtkTreeView *tree_view, const gchar **args, gint n_columns, gboolean toggles)
{
	GtkTreeModel *model;
	GtkTreeIter iter;
	gint i = 0;

	model = gtk_tree_view_get_model (tree_view);

	while (args[i] != NULL) {
		gint j;

		gtk_list_store_append (GTK_LIST_STORE (model), &iter);

		for (j = 0; j < n_columns; j++) {
	
			if (toggles && j == 0) {
				if (strcmp (args[i+j], "TRUE") == 0)
					gtk_list_store_set (GTK_LIST_STORE (model), &iter, j, TRUE, -1);
				else 
					gtk_list_store_set (GTK_LIST_STORE (model), &iter, j, FALSE, -1);
			}
			else
				gtk_list_store_set (GTK_LIST_STORE (model), &iter, j, args[i+j], -1);	
		}
		
		if (i == MAX_ELEMENTS_BEFORE_SCROLLING) {
			GtkWidget *scrolled_window;
			GtkRequisition rectangle;

			gtk_widget_size_request (GTK_WIDGET (tree_view), &rectangle);
			scrolled_window = glade_xml_get_widget (glade_dialog, "zenity_tree_window");
			gtk_widget_set_size_request (scrolled_window, -1, rectangle.height);
			gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
							GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
		}
	i += n_columns;

	}
}

void
zenity_tree (ZenityData *data, ZenityTreeData *tree_data)
{
	GtkWidget *dialog;
	GtkWidget *tree_view;
	GtkTreeViewColumn *column;
	GtkListStore *model;
	GType *column_types;
	GSList *tmp;
	gboolean first_column = FALSE;
	gint i, column_index, n_columns;

	glade_dialog = zenity_util_load_glade_file ("zenity_tree_dialog");

	if (glade_dialog == NULL) {
		data->exit_code = -1;
		return;
	}
        
        separator = g_strdup (tree_data->separator);

        n_columns = g_slist_length (tree_data->columns);

        if (n_columns == 0) {
                g_printerr (_("No column titles specified for --list\n"));
	        data->exit_code = -1;
                return;
        }

	if (tree_data->data == NULL) {
		g_printerr (_("No contents specified for --list\n"));
		data->exit_code = -1;
		return;
	}

	glade_xml_signal_autoconnect (glade_dialog);

	dialog = glade_xml_get_widget (glade_dialog, "zenity_tree_dialog");

	g_signal_connect (G_OBJECT (dialog), "response",
			  G_CALLBACK (zenity_tree_dialog_response), data);

	if (data->dialog_title)
		gtk_window_set_title (GTK_WINDOW (dialog), data->dialog_title);

	if (data->window_icon)
		zenity_util_set_window_icon (dialog, data->window_icon);
	else
		zenity_util_set_window_icon (dialog, ZENITY_IMAGE_FULLPATH ("zenity-list.png"));

	tree_view = glade_xml_get_widget (glade_dialog, "zenity_tree_view");

	/* Create an empty list store */
	model = g_object_new (GTK_TYPE_LIST_STORE, NULL);

	column_types = g_new (GType, n_columns);

	for (i = 0; i < n_columns; i++) {
		/* Have the limitation that the radioboxes and checkboxes are in the first column */
		if (i == 0 && (tree_data->checkbox || tree_data->radiobox))
			column_types[i] = G_TYPE_BOOLEAN;
		else
			column_types[i] = G_TYPE_STRING;
	}

	gtk_list_store_set_column_types (model, n_columns, column_types);

	gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), GTK_TREE_MODEL (model));

	column_index = 0;

	for (tmp = tree_data->columns; tmp; tmp = tmp->next) {
		if (first_column == FALSE) {
			if (tree_data->checkbox || tree_data->radiobox) {
				GtkCellRenderer *cell_renderer;
		
				cell_renderer = gtk_cell_renderer_toggle_new ();
				
				if (tree_data->radiobox)
					g_object_set (G_OBJECT (cell_renderer), "radio", TRUE, NULL);

				g_signal_connect (cell_renderer, "toggled",
						  G_CALLBACK (zenity_tree_toggled_callback), model);

				column = gtk_tree_view_column_new_with_attributes (tmp->data,
										   cell_renderer,
										   "active", column_index, NULL);
			}

			else  {
				column = gtk_tree_view_column_new_with_attributes (tmp->data,
										   gtk_cell_renderer_text_new (),
										   "text", column_index, NULL);
				gtk_tree_view_column_set_sort_column_id (column, column_index);
				gtk_tree_view_column_set_resizable (column, TRUE);
			}
			
			first_column = TRUE;
		}
		else {
			column = gtk_tree_view_column_new_with_attributes (tmp->data,
									   gtk_cell_renderer_text_new (),
									   "text", column_index, NULL);
			gtk_tree_view_column_set_sort_column_id (column, column_index);
			gtk_tree_view_column_set_resizable (column, TRUE);
			
		}
	
		gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), column);
		column_index++;
	}

	gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (tree_view), TRUE);

	if (tree_data->radiobox || tree_data->checkbox)
		zenity_tree_fill_entries (GTK_TREE_VIEW (tree_view), tree_data->data, n_columns, TRUE);
	else
		zenity_tree_fill_entries (GTK_TREE_VIEW (tree_view), tree_data->data, n_columns, FALSE);

	gtk_widget_show (dialog);
	gtk_main ();

	if (glade_dialog)
		g_object_unref (glade_dialog);
}

static void 
zenity_tree_dialog_get_selected (GtkTreeModel *model, GtkTreePath *path_buf, GtkTreeIter *iter, GtkTreeView *tree_view)
{
        GValue value = {0, };

        gtk_tree_model_get_value (model, iter, 0, &value);

        selected = g_slist_append (selected, g_strdup (g_value_get_string (&value)));
        g_value_unset (&value);
}

static gboolean
zenity_tree_dialog_toggle_get_selected (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data)
{
        GValue toggle_value = {0, };

        gtk_tree_model_get_value (model, iter, 0, &toggle_value);

        if (g_value_get_boolean (&toggle_value) == TRUE) {
                GValue value = {0, };
                gtk_tree_model_get_value (model, iter, 1, &value);
                selected = g_slist_append (selected, g_strdup (g_value_get_string (&value)));
                g_value_unset (&value);
        }
        g_value_unset (&toggle_value);
        return FALSE;
}

static void
zenity_tree_dialog_output (void)
{
        GSList *tmp;

        for (tmp = selected; tmp; tmp = tmp->next) {
                if (tmp->next != NULL) {
                      /* FIXME: There must be a nicer way to do this. This is just arse */
                      if (strstr (separator, "\\n") != NULL)
                              g_printerr ("%s\n", tmp->data);
                      else if (strstr (separator, "\\t") != NULL)
                              g_printerr ("%s\t", tmp->data);
                      else
                              g_printerr ("%s%s", tmp->data, separator);
                }
                else
                      g_printerr ("%s\n", tmp->data);
        }

        g_free (separator);
        g_slist_foreach (selected, (GFunc) g_free, NULL);
        selected = NULL;
}

static void
zenity_tree_dialog_response (GtkWidget *widget, int response, gpointer data)
{
	ZenityData *zen_data = data;
        GtkWidget *tree_view;
        GtkTreeSelection *selection; 
        GtkTreeModel *model;

	switch (response) {
		case GTK_RESPONSE_OK:
	                tree_view = glade_xml_get_widget (glade_dialog, "zenity_tree_view");
                        model = gtk_tree_view_get_model (GTK_TREE_VIEW (tree_view));

                        if (gtk_tree_model_get_column_type (model, 0) == G_TYPE_BOOLEAN) {
                                gtk_tree_model_foreach (model, 
                                                        (GtkTreeModelForeachFunc) zenity_tree_dialog_toggle_get_selected, 
                                                        NULL);
                        }
                        else {
                                selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
                                gtk_tree_selection_selected_foreach (selection, 
                                                                     (GtkTreeSelectionForeachFunc) zenity_tree_dialog_get_selected,
                                                                     GTK_TREE_VIEW (tree_view));
                        }
                        zenity_tree_dialog_output ();
			zen_data->exit_code = 0;
			gtk_main_quit ();
			break;

		case GTK_RESPONSE_CANCEL:
			zen_data->exit_code = 1;
			gtk_main_quit ();
			break;

		default:
			zen_data->exit_code = 1;
			break;
	}
}