path: root/calendar/gui/tasks-control.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* tasks-control.c
 *
 * Copyright (C) 2000, 2001, 2002, 2003  Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors: Damon Chaplin <damon@ximian.com>
 *      Ettore Perazzoli
 */

#include <config.h>
#include <gtk/gtksignal.h>
#include <gtk/gtklabel.h>
#include <gtk/gtkcheckbutton.h>
#include <gtk/gtkmessagedialog.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <libgnomeui/gnome-stock-icons.h>
#include <libgnomeprint/gnome-print.h>
#include <libgnomeprint/gnome-print-paper.h>
#include <libgnomeprint/gnome-print-job.h>
#include <libgnomeprintui/gnome-print-job-preview.h>
#include <libgnomeprintui/gnome-print-paper-selector.h>
#include <libgnomeprintui/gnome-print-preview.h>
#include <libgnomeprintui/gnome-print-dialog.h>
#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-property-bag.h>
#include <bonobo/bonobo-ui-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <e-util/e-dialog-utils.h>
#include "dialogs/cal-prefs-dialog.h"
#include "calendar-config.h"
#include "calendar-commands.h"
#include "e-tasks.h"
#include "e-calendar-table.h"
#include "tasks-control.h"
#include "evolution-shell-component-utils.h"

#define TASKS_CONTROL_PROPERTY_URI      "folder_uri"
#define TASKS_CONTROL_PROPERTY_URI_IDX      1
#define FIXED_MARGIN                            .05


static void tasks_control_properties_init   (BonoboControl      *control,
                         ETasks         *tasks);
static void tasks_control_get_property      (BonoboPropertyBag  *bag,
                         BonoboArg      *arg,
                         guint           arg_id,
                         CORBA_Environment      *ev,
                         gpointer        user_data);
static void tasks_control_set_property      (BonoboPropertyBag  *bag,
                         const BonoboArg    *arg,
                         guint           arg_id,
                         CORBA_Environment      *ev,
                         gpointer        user_data);
static void tasks_control_activate_cb       (BonoboControl      *control,
                         gboolean        activate,
                         gpointer        user_data);
static void tasks_control_new_task_cmd      (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_cut_cmd               (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_copy_cmd              (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_paste_cmd             (BonoboUIComponent      *uic,
                         gpointer                data,
                         const gchar            *path);
static void tasks_control_delete_cmd        (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_complete_cmd      (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_purge_cmd     (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_print_cmd     (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);
static void tasks_control_print_preview_cmd (BonoboUIComponent  *uic,
                         gpointer        data,
                         const char     *path);


static GnomePrintConfig *print_config = NULL;


BonoboControl *
tasks_control_new (void)
{
    BonoboControl *control;
    GtkWidget *tasks;

    tasks = e_tasks_new ();
    if (!tasks)
        return NULL;
    gtk_widget_show (tasks);

    control = bonobo_control_new (tasks);
    if (!control) {
        gtk_widget_destroy (tasks);
        g_message ("control_factory_fn(): could not create the control!");
        return NULL;
    }

    tasks_control_properties_init (control, E_TASKS (tasks));

    g_signal_connect (control, "activate", G_CALLBACK (tasks_control_activate_cb), tasks);

    return control;
}


/* Creates the property bag for our new control. */
static void
tasks_control_properties_init       (BonoboControl      *control,
                     ETasks         *tasks)
                     
{
    BonoboPropertyBag *pbag;

    pbag = bonobo_property_bag_new (tasks_control_get_property,
                    tasks_control_set_property, tasks);

    bonobo_property_bag_add (pbag,
                 TASKS_CONTROL_PROPERTY_URI,
                 TASKS_CONTROL_PROPERTY_URI_IDX,
                 BONOBO_ARG_STRING,
                 NULL,
                 _("The URI of the tasks folder to display"),
                 0);

    bonobo_control_set_properties (control, bonobo_object_corba_objref (BONOBO_OBJECT (pbag)), NULL);
    bonobo_object_unref (BONOBO_OBJECT (pbag));
}


/* Gets a property of our control. FIXME: Finish. */
static void
tasks_control_get_property      (BonoboPropertyBag  *bag,
                     BonoboArg      *arg,
                     guint           arg_id,
                     CORBA_Environment      *ev,
                     gpointer        user_data)
{
    ETasks *tasks = user_data;
    const char *uri;
    ECalModel *model;

    switch (arg_id) {

    case TASKS_CONTROL_PROPERTY_URI_IDX:
        model = e_calendar_table_get_model (e_tasks_get_calendar_table (tasks));
        uri = e_cal_get_uri (e_cal_model_get_default_client (model));
        BONOBO_ARG_SET_STRING (arg, uri);
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
    }
}


static void
tasks_control_set_property      (BonoboPropertyBag  *bag,
                     const BonoboArg    *arg,
                     guint           arg_id,
                     CORBA_Environment      *ev,
                     gpointer        user_data)
{
    ETasks *tasks = user_data;
    char *uri;

    switch (arg_id) {

    case TASKS_CONTROL_PROPERTY_URI_IDX:
        /* FIXME Remove the old uri? */
        uri = BONOBO_ARG_GET_STRING (arg);
        if (!e_tasks_add_todo_uri (tasks, uri)) {
            char *msg;

            msg = g_strdup_printf (_("Could not load the tasks in `%s'"), uri);
            gnome_error_dialog_parented (
                msg,
                GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (tasks))));
            g_free (msg);
        }
        break;

    default:
        g_warning ("Unhandled arg %d\n", arg_id);
        break;
    }
}


static void
tasks_control_activate_cb       (BonoboControl      *control,
                     gboolean        activate,
                     gpointer        user_data)
{
    ETasks *tasks;

    tasks = E_TASKS (user_data);

    if (activate)
        tasks_control_activate (control, tasks);
    else
        tasks_control_deactivate (control, tasks);
}

/* Sensitizes the UI Component menu/toolbar commands based on the number of
 * selected tasks.
 */
static void
sensitize_commands (ETasks *tasks, BonoboControl *control, int n_selected)
{
    BonoboUIComponent *uic;
    gboolean read_only = TRUE;
    ECalModel *model;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    model = e_calendar_table_get_model (e_tasks_get_calendar_table (tasks));
    e_cal_is_read_only (e_cal_model_get_default_client (model), &read_only, NULL);

    bonobo_ui_component_set_prop (uic, "/commands/TasksCut", "sensitive",
                      n_selected == 0 || read_only ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/TasksCopy", "sensitive",
                      n_selected == 0 ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/TasksPaste", "sensitive",
                      n_selected == 0 || read_only ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/TasksDelete", "sensitive",
                      n_selected == 0 || read_only ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/TasksMarkComplete", "sensitive",
                      n_selected == 0 || read_only ? "0" : "1",
                      NULL);
    bonobo_ui_component_set_prop (uic, "/commands/TasksPurge", "sensitive",
                      read_only ? "0" : "1",
                      NULL);
}

/* Callback used when the selection in the table changes */
static void
selection_changed_cb (ETasks *tasks, int n_selected, gpointer data)
{
    BonoboControl *control;

    control = BONOBO_CONTROL (data);

    sensitize_commands (tasks, control, n_selected);
}

static BonoboUIVerb verbs [] = {
    BONOBO_UI_VERB ("TasksNewTask", tasks_control_new_task_cmd),
    BONOBO_UI_VERB ("TasksCut", tasks_control_cut_cmd),
    BONOBO_UI_VERB ("TasksCopy", tasks_control_copy_cmd),
    BONOBO_UI_VERB ("TasksPaste", tasks_control_paste_cmd),
    BONOBO_UI_VERB ("TasksDelete", tasks_control_delete_cmd),
    BONOBO_UI_VERB ("TasksMarkComplete", tasks_control_complete_cmd),
    BONOBO_UI_VERB ("TasksPurge", tasks_control_purge_cmd),
    BONOBO_UI_VERB ("TasksPrint", tasks_control_print_cmd),
    BONOBO_UI_VERB ("TasksPrintPreview", tasks_control_print_preview_cmd),

    BONOBO_UI_VERB_END
};

void
tasks_control_activate (BonoboControl *control, ETasks *tasks)
{
    Bonobo_UIContainer remote_uih;
    BonoboUIComponent *uic;
    int n_selected;
    ECalendarTable *cal_table;
    ETable *etable;

    uic = bonobo_control_get_ui_component (control);
    g_assert (uic != NULL);

    remote_uih = bonobo_control_get_remote_ui_container (control, NULL);
    bonobo_ui_component_set_container (uic, remote_uih, NULL);
    bonobo_object_release_unref (remote_uih, NULL);

    e_tasks_set_ui_component (tasks, uic);

    bonobo_ui_component_add_verb_list_with_data (uic, verbs, tasks);

    bonobo_ui_component_freeze (uic, NULL);

    bonobo_ui_util_set_ui (uic, PREFIX,
                   EVOLUTION_UIDIR "/evolution-tasks.xml",
                   "evolution-tasks",
                   NULL);

    e_tasks_setup_view_menus (tasks, uic);

    /* Signals from the tasks widget; also sensitize the menu items as appropriate */

    g_signal_connect (tasks, "selection_changed", G_CALLBACK (selection_changed_cb), control);

    cal_table = e_tasks_get_calendar_table (tasks);
    etable = e_calendar_table_get_table (cal_table);
    n_selected = e_table_selected_count (etable);

    sensitize_commands (tasks, control, n_selected);

    bonobo_ui_component_thaw (uic, NULL);

    /* Show the dialog for setting the timezone if the user hasn't chosen
       a default timezone already. This is done in the startup wizard now,
       so we don't do it here. */
#if 0
    calendar_config_check_timezone_set ();
#endif

    control_util_set_folder_bar_label (control, "");
}


void
tasks_control_deactivate (BonoboControl *control, ETasks *tasks)
{
    BonoboUIComponent *uic = bonobo_control_get_ui_component (control);

    g_assert (uic != NULL);

    e_tasks_set_ui_component (tasks, NULL);

    e_tasks_discard_view_menus (tasks);

    /* Stop monitoring the "selection_changed" signal */
    g_signal_handlers_disconnect_matched (tasks, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, control);

    bonobo_ui_component_rm (uic, "/", NULL);
    bonobo_ui_component_unset_container (uic, NULL);
}


static void
tasks_control_new_task_cmd      (BonoboUIComponent  *uic,
                     gpointer        data,
                     const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    e_tasks_new_task (tasks);
}

static void
tasks_control_cut_cmd                   (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_cut_clipboard (cal_table);
}

static void
tasks_control_copy_cmd                  (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_copy_clipboard (cal_table);
}

static void
tasks_control_paste_cmd                 (BonoboUIComponent      *uic,
                     gpointer                data,
                     const char             *path)
{
    ETasks *tasks;
    ECalendarTable *cal_table;

    tasks = E_TASKS (data);
    cal_table = e_tasks_get_calendar_table (tasks);
    e_calendar_table_paste_clipboard (cal_table);
}

static void
tasks_control_delete_cmd        (BonoboUIComponent  *uic,
                     gpointer        data,
                     const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    e_tasks_delete_selected (tasks);
}

static void
tasks_control_complete_cmd      (BonoboUIComponent  *uic,
                     gpointer        data,
                     const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    e_tasks_complete_selected (tasks);
}

static gboolean
confirm_purge (ETasks *tasks)
{
    GtkWidget *dialog, *checkbox, *parent;
    int button;
    
    if (!calendar_config_get_confirm_purge ())
        return TRUE;

    parent = gtk_widget_get_toplevel (GTK_WIDGET (tasks));
    dialog = gtk_message_dialog_new (
        (GtkWindow *)parent,
        GTK_DIALOG_DESTROY_WITH_PARENT,
        GTK_MESSAGE_WARNING,
        GTK_BUTTONS_YES_NO,
        _("This operation will permanently erase all tasks marked as completed. If you continue, you will not be able to recover these tasks.\n\nReally erase these tasks?"));
    gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_NO);

    checkbox = gtk_check_button_new_with_label (_("Do not ask me again."));
    gtk_widget_show (checkbox);
    gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), checkbox, TRUE, TRUE, 6);
    
    button = gtk_dialog_run (GTK_DIALOG (dialog));  
    if (button == GTK_RESPONSE_YES && gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (checkbox)))
        calendar_config_set_confirm_purge (FALSE);
    gtk_widget_destroy (dialog);
    
    return button == GTK_RESPONSE_YES ? TRUE : FALSE;
}

static void
tasks_control_purge_cmd (BonoboUIComponent  *uic,
             gpointer        data,
             const char     *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);
    
    if (confirm_purge (tasks))
        e_tasks_delete_completed (tasks);
}


static void
print_title (GnomePrintContext *pc,
         double page_width, double page_height)
{
    GnomeFont *font;
    char *text;
    double w, x, y;

    font = gnome_font_find_closest ("Sans Bold", 18);

    text = _("Tasks");
    w = gnome_font_get_width_utf8 (font, text);

    x = (page_width - w) / 2;
    y = page_height - gnome_font_get_ascender (font);

    gnome_print_moveto (pc, x, y);
    gnome_print_setfont (pc, font);
    gnome_print_setrgbcolor (pc, 0, 0, 0);
    gnome_print_show (pc, text);

    g_object_unref (font);
}

static void
print_tasks (ETasks *tasks, gboolean preview)
{
    ECalendarTable *cal_table;
    EPrintable *printable;
    ETable *etable;
    GnomePrintContext *pc;
    GnomePrintJob *gpm;
    double l, r, t, b, page_width, page_height, left_margin, bottom_margin;

    if (!print_config)
        print_config = gnome_print_config_default ();

    cal_table = e_tasks_get_calendar_table (tasks);
    etable = e_calendar_table_get_table (E_CALENDAR_TABLE (cal_table));
    printable = e_table_get_printable (etable);
    g_object_ref (printable);
    gtk_object_sink (GTK_OBJECT (printable));
    e_printable_reset (printable);

    gpm = gnome_print_job_new (print_config);
    pc = gnome_print_job_get_context (gpm);

    gnome_print_config_get_page_size (print_config, &r, &t);

#if 0
    gnome_print_config_get_double (print_config, GNOME_PRINT_KEY_PAGE_MARGIN_TOP, &temp_d);
    t -= temp_d;
    gnome_print_config_get_double (print_config, GNOME_PRINT_KEY_PAGE_MARGIN_RIGHT, &temp_d);
    r -= temp_d;
    gnome_print_config_get_double (print_config, GNOME_PRINT_KEY_PAGE_MARGIN_BOTTOM, &b);
    gnome_print_config_get_double (print_config, GNOME_PRINT_KEY_PAGE_MARGIN_LEFT, &l);
#endif

    b = t * FIXED_MARGIN;
    l = r * FIXED_MARGIN;
    t *= (1.0 - FIXED_MARGIN);
    r *= (1.0 - FIXED_MARGIN);

    page_width = r - l;
    page_height = t - b;
    left_margin = l;
    bottom_margin = b;

    while (e_printable_data_left (printable)) {
        gnome_print_beginpage (pc, "Tasks");
        gnome_print_gsave (pc);

        gnome_print_translate (pc, left_margin, bottom_margin);

        print_title (pc, page_width, page_height);

        e_printable_print_page (printable, pc,
                    page_width, page_height - 24, TRUE);

        gnome_print_grestore (pc);
        gnome_print_showpage (pc);
    }

    gnome_print_job_close (gpm);

    if (preview) {
        GtkWidget *gpmp;
        gpmp = gnome_print_job_preview_new (gpm, _("Print Preview"));
        gtk_widget_show (gpmp);
    } else {
        gnome_print_job_print (gpm);
    }

    g_object_unref (gpm);
    g_object_unref (printable);
}


/* File/Print callback */
static void
tasks_control_print_cmd (BonoboUIComponent *uic,
             gpointer data,
             const char *path)
{
    ETasks *tasks;
    GtkWidget *gpd;
    gboolean preview = FALSE;
    GnomePrintJob *gpm;

    tasks = E_TASKS (data);

    if (!print_config)
        print_config = gnome_print_config_default ();

    gpm = gnome_print_job_new (print_config);

    gpd = gnome_print_dialog_new (gpm, _("Print Tasks"), GNOME_PRINT_DIALOG_COPIES);
    gtk_dialog_set_default_response (GTK_DIALOG (gpd), GNOME_PRINT_DIALOG_RESPONSE_PRINT);

    /* Run dialog */
    switch (gtk_dialog_run (GTK_DIALOG (gpd))) {
    case GNOME_PRINT_DIALOG_RESPONSE_PRINT:
        break;

    case GNOME_PRINT_DIALOG_RESPONSE_PREVIEW:
        preview = TRUE;
        break;

    case -1:
        return;

    default:
        gtk_widget_destroy (gpd);
        return;
    }

    gtk_widget_destroy (gpd);
    print_tasks (tasks, preview);
}

static void
tasks_control_print_preview_cmd (BonoboUIComponent *uic,
                 gpointer data,
                 const char *path)
{
    ETasks *tasks;

    tasks = E_TASKS (data);

    print_tasks (tasks, TRUE);
}