path: root/calendar/gncal-todo.c

/* To-do widget for gncal
 *
 * Copyright (C) 1998 The Free Software Foundation
 *
 * Author: Federico Mena <quartic@gimp.org>
 */

#include <config.h>
#include <string.h>
#include <gnome.h>
#include "gncal-todo.h"
#include "main.h"
#include "popup-menu.h"
#include "eventedit.h"

int todo_show_due_date = 0;
int todo_due_date_overdue_highlight = 0;
char *todo_overdue_font_text;
gint todo_current_sort_column = 0;
gint todo_current_sort_type = GTK_SORT_ASCENDING;

gboolean todo_style_changed =0;
gboolean todo_list_autoresize = 1;
gboolean todo_list_redraw_in_progess = 0;
static void gncal_todo_init (GncalTodo *todo);


guint
gncal_todo_get_type (void)
{
    static guint todo_type = 0;

    if (!todo_type) {
        GtkTypeInfo todo_info = {
            "GncalTodo",
            sizeof (GncalTodo),
            sizeof (GncalTodoClass),
            (GtkClassInitFunc) NULL,
            (GtkObjectInitFunc) gncal_todo_init,
            (GtkArgSetFunc) NULL,
            (GtkArgGetFunc) NULL
        };

        todo_type = gtk_type_unique (gtk_vbox_get_type (), &todo_info);
    }

    return todo_type;
}

static void
ok_button (GtkWidget *widget, GnomeDialog *dialog)
{
    iCalObject *ico;
    GncalTodo *todo;
    GtkEntry *entry;
    GnomeDateEdit *due_date;
    ico = gtk_object_get_user_data (GTK_OBJECT (dialog));

    todo = GNCAL_TODO (gtk_object_get_data (GTK_OBJECT (dialog), "gncal_todo"));
    entry = GTK_ENTRY (gtk_object_get_data (GTK_OBJECT (dialog), "summary_entry"));
    due_date = GNOME_DATE_EDIT (gtk_object_get_data(GTK_OBJECT(dialog), "due_date"));
    if (ico->summary)
        g_free (ico->summary);
    ico->dtend = gnome_date_edit_get_date (due_date);
    ico->summary = g_strdup (gtk_entry_get_text (entry));
    ico->user_data = NULL;

    if (ico->new) {
        gnome_calendar_add_object (todo->calendar, ico);
        ico->new = FALSE;
    } else 
        gnome_calendar_object_changed (todo->calendar, ico, CHANGE_ALL); /* ok, summary only... */

    save_default_calendar (todo->calendar);
    gtk_widget_destroy (GTK_WIDGET (dialog));
}

static void
cancel_button (GtkWidget *widget, GnomeDialog *dialog)
{
    iCalObject *ico;

    ico = gtk_object_get_user_data (GTK_OBJECT (dialog));

    ico->user_data = NULL;

    if (ico->new)
        ical_object_destroy (ico);

    gtk_widget_destroy (GTK_WIDGET (dialog));


}

static gint
delete_event (GtkWidget *widget, GdkEvent *event, GnomeDialog *dialog)
{
    cancel_button (NULL, dialog);
    return TRUE;
}

static void
simple_todo_editor (GncalTodo *todo, iCalObject *ico)
{
    GtkWidget *dialog;
    GtkWidget *hbox;
    GtkWidget *due_box;
    GtkWidget *due_label;
    GtkWidget *due_entry;
    GtkWidget *w;

    GtkWidget *entry;

    dialog = gnome_dialog_new (ico->new ? _("Create to-do item") : _("Edit to-do item"),
                   GNOME_STOCK_BUTTON_OK,
                   GNOME_STOCK_BUTTON_CANCEL,
                   NULL);
    gnome_dialog_set_parent (GNOME_DIALOG (dialog), GTK_WINDOW (todo->calendar));
    hbox = gtk_hbox_new (FALSE, 4);
    gtk_container_border_width (GTK_CONTAINER (hbox), 4);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), hbox, FALSE, FALSE, 0);
    gtk_widget_show (hbox);


    due_box = gtk_hbox_new (FALSE, 4);
    gtk_container_border_width (GTK_CONTAINER (due_box), 4);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), due_box, FALSE, FALSE, 0);
    gtk_widget_show (due_box);

    w = gtk_label_new (_("Summary:"));
    gtk_box_pack_start (GTK_BOX (hbox), w, FALSE, FALSE, 0);
    gtk_widget_show (w);

    entry = gtk_entry_new ();
    gtk_entry_set_text (GTK_ENTRY (entry), ico->summary);
    gtk_box_pack_start (GTK_BOX (hbox), entry, TRUE, TRUE, 0);
    gtk_widget_show (entry);


    due_label = gtk_label_new (_("Due Date:"));
    gtk_box_pack_start (GTK_BOX (due_box), due_label, FALSE, FALSE, 0);
    gtk_widget_show (due_label);

    due_entry = gtk_entry_new ();
    due_entry = date_edit_new (ico->dtend, FALSE);
    gtk_box_pack_start (GTK_BOX (due_box), due_entry, TRUE, TRUE, 0);
    gtk_widget_show (due_entry);
    

    ico->user_data = dialog;

    gtk_object_set_user_data (GTK_OBJECT (dialog), ico);

    gtk_object_set_data (GTK_OBJECT (dialog), "gncal_todo", todo);
    gtk_object_set_data (GTK_OBJECT (dialog), "summary_entry", entry);
    gtk_object_set_data (GTK_OBJECT (dialog), "due_date", due_entry);

    gnome_dialog_button_connect (GNOME_DIALOG (dialog), 0, (GtkSignalFunc) ok_button, dialog);
    gnome_dialog_button_connect (GNOME_DIALOG (dialog), 1, (GtkSignalFunc) cancel_button, dialog);

    gtk_signal_connect (GTK_OBJECT (dialog), "delete_event",
                (GtkSignalFunc) delete_event,
                dialog);

    gnome_dialog_set_default (GNOME_DIALOG (dialog), 0);
    gnome_dialog_editable_enters (GNOME_DIALOG (dialog), GTK_EDITABLE(entry));

    gtk_window_position (GTK_WINDOW (dialog), GTK_WIN_POS_MOUSE);
    gtk_widget_show (dialog);
    gtk_widget_grab_focus (entry);
}

static iCalObject *
get_clist_selected_ico (GtkCList *clist)
{
    gint sel;

    if (!clist->selection)
        return NULL;

    sel = GPOINTER_TO_INT(clist->selection->data);

    return gtk_clist_get_row_data (clist, sel);
}

static void
add_todo (GncalTodo *todo)
{
    iCalObject *ico;

    ico = ical_new ("", user_name, "");
    ico->type = ICAL_TODO;
    ico->new = TRUE;

    simple_todo_editor (todo, ico);
}

static void
edit_todo (GncalTodo *todo)
{
    simple_todo_editor (todo, get_clist_selected_ico (todo->clist));
}

static void
delete_todo (GncalTodo *todo)
{
    gnome_calendar_remove_object (todo->calendar, get_clist_selected_ico (todo->clist));
    save_default_calendar (todo->calendar);
    
}

static void
add_activated (GtkWidget *widget, GncalTodo *todo)
{
    add_todo (todo);
}

static void
edit_activated (GtkWidget *widget, GncalTodo *todo)
{
    edit_todo (todo);
}

static void
delete_activated (GtkWidget *widget, GncalTodo *todo)
{
    delete_todo (todo);
}


static void
clist_row_selected (GtkCList *clist, gint row, gint column, GdkEventButton *event, GncalTodo *todo)
{
    static struct menu_item items[] = {
        { N_("Add to-do item..."), (GtkSignalFunc) add_activated, NULL, TRUE },
        { N_("Edit this item..."), (GtkSignalFunc) edit_activated, NULL, TRUE },
        { N_("Delete this item"), (GtkSignalFunc) delete_activated, NULL, TRUE }
    };

    int i;

    gtk_widget_set_sensitive (todo->edit_button, (todo->clist->selection != NULL));
    gtk_widget_set_sensitive (todo->delete_button, (todo->clist->selection != NULL));

    if (!event)
        return;

    switch (event->button) {
    case 1:
        if (event->type == GDK_2BUTTON_PRESS)
            edit_todo (todo);
        break;

    case 3:
        for (i = 0; i < (sizeof (items) / sizeof (items[0])); i++)
            items[i].data = todo;

        popup_menu (items, sizeof (items) / sizeof (items[0]), event);
        break;

    default:
        break;
    }
}

/*
 * once we get a call back stating that a column
 * has been resized never ever automatically resize again
 */
void
column_resized (GtkWidget *widget, GncalTodo *todo)
{
    /* disabling autoresize of columns */
    if (todo_list_autoresize && !todo_list_redraw_in_progess){
        todo_list_autoresize = 0;
    }
}

/*
 * restore the previously set settings for sorting the 
 * todo list
 */
static void
init_column_sorting (GtkCList *clist)
{

    /* due date isn't shown so we can't sort by it */
    if (todo_current_sort_column == 1 && ! todo_show_due_date) 
        todo_current_sort_column = 0;
    
    clist->sort_type = todo_current_sort_type;
    clist->sort_column = todo_current_sort_column;
    
    gtk_clist_set_sort_column (clist, todo_current_sort_column);
    gtk_clist_sort (clist);
}

static void 
todo_click_column (GtkCList *clist, gint column, gpointer data)
{
    if (column == clist->sort_column)
    {
        if (clist->sort_type == GTK_SORT_ASCENDING) {
            clist->sort_type = GTK_SORT_DESCENDING;
            todo_current_sort_type = GTK_SORT_DESCENDING;
        } else {
            clist->sort_type = GTK_SORT_ASCENDING;
            todo_current_sort_type = GTK_SORT_ASCENDING;
        }
    }
    else {
        gtk_clist_set_sort_column (clist, column);
        todo_current_sort_column = column;
    }
    
    gtk_clist_sort (clist); 
  
    /*
     * save the sorting preferences cause I hate to have the user
     * click twice
     */

    gnome_config_set_int("/calendar/Todo/sort_column", todo_current_sort_column);
    gnome_config_set_int("/calendar/Todo/sort_type", todo_current_sort_type);
    gnome_config_sync();
}

static void
gncal_todo_init (GncalTodo *todo)
{
    GtkWidget *w;
    GtkWidget *sw;
    GtkWidget *hbox;
    gchar *titles[2] = {"Summary","Due Date"};
    gtk_box_set_spacing (GTK_BOX (todo), 4);

    /* Label */

    w = gtk_label_new (_("To-do list"));
    gtk_misc_set_alignment (GTK_MISC (w), 0.0, 0.5);
    gtk_box_pack_start (GTK_BOX (todo), w, FALSE, FALSE, 0);
    gtk_widget_show (w);

    /* Clist */

    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_box_pack_start (GTK_BOX (todo), sw, TRUE, TRUE, 0);
    gtk_widget_show (sw);


    w = gtk_clist_new_with_titles(2, titles);

    todo->clist = GTK_CLIST (w);
    gtk_clist_set_selection_mode (todo->clist, GTK_SELECTION_BROWSE);

    gtk_signal_connect (GTK_OBJECT (todo->clist), "select_row",
                (GtkSignalFunc) clist_row_selected,
                todo);
    gtk_signal_connect (GTK_OBJECT (todo->clist), "resize_column",
                (GtkSignalFunc) column_resized,
                todo);
    gtk_signal_connect (GTK_OBJECT (todo->clist), "click_column",
              (GtkSignalFunc) todo_click_column, NULL);

    gtk_container_add (GTK_CONTAINER (sw), w);
    gtk_widget_show (w);

    /* Box for buttons */

    hbox = gtk_hbox_new (TRUE, 4);
    gtk_box_pack_start (GTK_BOX (todo), hbox, FALSE, FALSE, 0);
    gtk_widget_show (hbox);

    /* Add */

    w = gtk_button_new_with_label (_("Add..."));
    gtk_signal_connect (GTK_OBJECT (w), "clicked",
                (GtkSignalFunc) add_activated,
                todo);
    gtk_box_pack_start (GTK_BOX (hbox), w, TRUE, TRUE, 0);
    gtk_widget_show (w);

    /* Edit */

    w = gtk_button_new_with_label (_("Edit..."));
    todo->edit_button = w;
    gtk_widget_set_sensitive (w, FALSE);
    gtk_signal_connect (GTK_OBJECT (w), "clicked",
                (GtkSignalFunc) edit_activated,
                todo);
    gtk_box_pack_start (GTK_BOX (hbox), w, TRUE, TRUE, 0);
    gtk_widget_show (w);

    /* Delete */

    w = gtk_button_new_with_label (_("Delete"));
    todo->delete_button = w;
    gtk_widget_set_sensitive (w, FALSE);
    gtk_signal_connect (GTK_OBJECT (w), "clicked",
                (GtkSignalFunc) delete_activated,
                todo);
    gtk_box_pack_start (GTK_BOX (hbox), w, TRUE, TRUE, 0);
    gtk_widget_show (w);
}

GtkWidget *
gncal_todo_new (GnomeCalendar *calendar)
{
    GncalTodo *todo;

    g_return_val_if_fail (calendar != NULL, NULL);

    todo = gtk_type_new (gncal_todo_get_type ());

    todo->calendar = calendar;

    gncal_todo_update (todo, NULL, 0);

    return GTK_WIDGET (todo);
}



char *
convert_time_t_to_char (time_t t)
{
    char *buffer;
    struct tm *tm;

    buffer = g_malloc(15);
    tm = localtime (&t);
    strftime(buffer, 15, "%m/%d/%y", tm);

    return buffer;
}

GtkStyle *
make_overdue_todo_style(GncalTodo *todo)
{
    GtkStyle *overdue_style = NULL;
    GdkColor overdue_color;
    
    /*make the overdue color configurable */
    overdue_color.red   = color_props[COLOR_PROP_OVERDUE_TODO].r;
    overdue_color.green = color_props[COLOR_PROP_OVERDUE_TODO].g;
    overdue_color.blue  = color_props[COLOR_PROP_OVERDUE_TODO].b;
    
    overdue_style = gtk_style_copy (GTK_WIDGET (todo->clist)->style);
    overdue_style->base[GTK_STATE_NORMAL] = overdue_color;
    
    return overdue_style;
}

static void
insert_in_clist (GncalTodo *todo, iCalObject *ico)
{
    int i;
    char *text[2];
        static GtkStyle *overdue_style = NULL;
    
      
    /* setup the over due style if we haven't already, or it changed.*/
    if (todo_style_changed || !overdue_style) { 
        /* free the old style cause its not needed anymore */
        if(!overdue_style) g_free(overdue_style);
        overdue_style = make_overdue_todo_style(todo);
        todo_style_changed = 0;
    }


    text[0] =  ico->summary;

    /*
     * right now column 0 will be the summary
     * and column 1 will be the due date. 
     * WISH:  this should be able to be changed on the fly
     */

    if(ico->dtend && todo_show_due_date) {
        text[1] = convert_time_t_to_char(ico->dtend);
        /* Append the data's pointer so later it can be properly freed */
        todo->data_ptrs = g_slist_append (todo->data_ptrs, text[1]);
    }
    else
        text[1] = NULL;
    
    
    i = gtk_clist_append (todo->clist, text);
    
    gtk_clist_set_row_data (todo->clist, i, ico);

    /*
     * determine if the task is overdue..
     * if so mark with the apropriate style
     */
    if(todo_due_date_overdue_highlight) {
        if(ico->dtend < time(NULL))
            gtk_clist_set_row_style(todo->clist, i, overdue_style);
    }
    
    /* keep the list in order */
    gtk_clist_sort (todo->clist); 
}

void
gncal_todo_update (GncalTodo *todo, iCalObject *ico, int flags)
{
    GList *list;    
    GSList *current_list;

    g_return_if_fail (todo != NULL);
    g_return_if_fail (GNCAL_IS_TODO (todo));
    
    /*
     * shut down the resize handler cause we are playing with the list. 
     * In otherwords turn off the event handler
     */
    todo_list_redraw_in_progess =1;
    
    /* freeze the list */
    gtk_clist_freeze (todo->clist);
    init_column_sorting (todo->clist);

    /*
     * before here we have to free some of the memory that
     * stores the due date, or else we have a memory leak. 
     * luckily all of the pointers are stored in todo->data_ptrs;
     */

    /* check on the columns that we should display */
    /* check for due date */

    if(todo_show_due_date) 
        gtk_clist_set_column_visibility (todo->clist, 1, 1);
    else
        gtk_clist_set_column_visibility (todo->clist, 1, 0);
    
    /* free the memory locations that were used in the previous display */
    for (current_list = todo->data_ptrs; current_list != NULL; current_list = g_slist_next(current_list)){
        g_free(current_list->data);
    }

    /* free the list and clear out the pointer */
    g_slist_free(todo->data_ptrs);
    todo->data_ptrs = NULL;

    gtk_clist_clear (todo->clist);

    for (list = todo->calendar->cal->todo; list; list = list->next)
        insert_in_clist (todo, list->data);

    /* if we are autoresizing then do it now */
    if(todo_list_autoresize && todo->clist->rows != 0) 
        gtk_clist_columns_autosize (todo->clist);

    gtk_clist_thaw (todo->clist);
    
    gtk_widget_set_sensitive (todo->edit_button, (todo->clist->selection != NULL));
    gtk_widget_set_sensitive (todo->delete_button, (todo->clist->selection != NULL));
    todo_list_redraw_in_progess = 0;
}