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path: root/calendar/gui/tasks-control.c
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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* tasks-control.c
 *
 * Copyright (C) 2000  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 <libgnome/gnome-defs.h>
#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-paper.h>
#include <libgnome/gnome-util.h>
#include <libgnomeui/gnome-dialog.h>
#include <libgnomeui/gnome-dialog-util.h>
#include <libgnomeui/gnome-stock.h>
#include <libgnomeprint/gnome-print.h>
#include <libgnomeprint/gnome-print-copies.h>
#include <libgnomeprint/gnome-print-master.h>
#include <libgnomeprint/gnome-print-master-preview.h>
#include <libgnomeprint/gnome-print-preview.h>
#include <libgnomeprint/gnome-printer-dialog.h>
#include <bonobo/bonobo-control.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 "tasks-control.h"
#include "evolution-shell-component-utils.h"

#define TASKS_CONTROL_PROPERTY_URI      "folder_uri"
#define TASKS_CONTROL_PROPERTY_URI_IDX      1


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_activate      (BonoboControl      *control,
                         ETasks         *tasks);
static void tasks_control_deactivate        (BonoboControl      *control,
                         ETasks         *tasks);

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_expunge_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);


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));

    gtk_signal_connect (GTK_OBJECT (control), "activate",
                GTK_SIGNAL_FUNC (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, pbag);
    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;
    char *uri;

    switch (arg_id) {

    case TASKS_CONTROL_PROPERTY_URI_IDX:
        uri = cal_client_get_uri (e_tasks_get_cal_client (tasks));
        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:
        uri = BONOBO_ARG_GET_STRING (arg);
        if (!e_tasks_open (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;

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

    read_only = cal_client_is_read_only (e_tasks_get_cal_client (tasks));

    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/TasksExpunge", "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 ("TasksExpunge", tasks_control_expunge_cmd),
    BONOBO_UI_VERB ("TasksPrint", tasks_control_print_cmd),
    BONOBO_UI_VERB ("TasksPrintPreview", tasks_control_print_preview_cmd),

    BONOBO_UI_VERB_END
};

static EPixmap pixmaps [] = {
    E_PIXMAP ("/menu/File/Print/Print",             "print.xpm"),
    E_PIXMAP ("/menu/File/Print/PrintPreview",          "print-preview.xpm"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/TasksCut",            "16_cut.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/TasksCopy",           "16_copy.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/TasksPaste",          "16_paste.png"),
    E_PIXMAP ("/menu/EditPlaceholder/Edit/TasksDelete",         "evolution-trash-mini.png"),
    E_PIXMAP ("/Toolbar/Cut",                                   "buttons/cut.png"),
    E_PIXMAP ("/Toolbar/Copy",                                  "buttons/copy.png"),
    E_PIXMAP ("/Toolbar/Paste",                                 "buttons/paste.png"),
    E_PIXMAP ("/Toolbar/Delete",                                "buttons/delete-message.png"),
    E_PIXMAP ("/Toolbar/Print",                 "buttons/print.png"),
    E_PIXMAP_END
};

static 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);
    bonobo_ui_component_set_container (uic, remote_uih);
    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, EVOLUTION_DATADIR,
                   "evolution-tasks.xml",
                   "evolution-tasks");

    e_pixmaps_update (uic, pixmaps);

    e_tasks_setup_view_menus (tasks, uic);

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

    gtk_signal_connect (GTK_OBJECT (tasks), "selection_changed",
                GTK_SIGNAL_FUNC (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, "");
}


static 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 */
    gtk_signal_disconnect_by_data (GTK_OBJECT (tasks), control);

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


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_expunge (ETasks *tasks)
{
    GtkWidget *dialog, *label, *checkbox;
    int button;
    
    if (!calendar_config_get_confirm_expunge ())
        return TRUE;
    
    dialog = gnome_dialog_new (_("Warning"),
                   GNOME_STOCK_BUTTON_YES,
                   GNOME_STOCK_BUTTON_NO,
                   NULL);
    e_gnome_dialog_set_parent (GNOME_DIALOG (dialog), 
                   GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (tasks),
                                    GTK_TYPE_WINDOW)));
    
    label = gtk_label_new (_("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_label_set_line_wrap (GTK_LABEL (label), TRUE);
    gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_LEFT);
    gtk_widget_show (label);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), label, TRUE, TRUE, 4);
    
    checkbox = gtk_check_button_new_with_label (_("Do not ask me again."));
    gtk_widget_show (checkbox);
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (dialog)->vbox), checkbox, TRUE, TRUE, 4);
    
    button = gnome_dialog_run (GNOME_DIALOG (dialog));  
    if (button == 0 && gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (checkbox)))
        calendar_config_set_confirm_expunge (FALSE);
    gnome_dialog_close (GNOME_DIALOG (dialog));
    
    if (button == 0)
        return TRUE;
    else
        return FALSE;
}

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

    tasks = E_TASKS (data);
    
    if (confirm_expunge (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_new_closest ("Times", GNOME_FONT_BOLD, 0, 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);

    gtk_object_unref (GTK_OBJECT (font));
}


static void
print_tasks (ETasks *tasks, gboolean preview, gboolean landscape,
         int copies, gboolean collate)
{
    ECalendarTable *cal_table;
    EPrintable *printable;
    ETable *etable;
    GnomePrintMaster *master;
    GnomePrintContext *pc;
    const GnomePaper *paper_info;
    double l, r, t, b, page_width, page_height, left_margin, bottom_margin;

    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);

    master = gnome_print_master_new ();

    paper_info = gnome_paper_with_name (gnome_paper_name_default ());
    gnome_print_master_set_paper (master, paper_info);

    gnome_print_master_set_copies (master, copies, collate);
    pc = gnome_print_master_get_context (master);
    e_printable_reset (printable);

    l = gnome_paper_lmargin (paper_info);
    r = gnome_paper_pswidth (paper_info)
        - gnome_paper_rmargin (paper_info);
    t = gnome_paper_psheight (paper_info)
        - gnome_paper_tmargin (paper_info);
    b = gnome_paper_bmargin (paper_info);

    if (landscape) {
        page_width = t - b;
        page_height = r - l;
        left_margin = b;
        bottom_margin = gnome_paper_rmargin (paper_info);
    } else {
        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);
        if (landscape) {
            gnome_print_rotate (pc, 90);
            gnome_print_translate (pc, 0, -gnome_paper_pswidth (paper_info));
        }

        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_master_close (master);

    if (preview) {
        GnomePrintMasterPreview *gpmp;
        gpmp = gnome_print_master_preview_new_with_orientation (master, _("Print Preview"), landscape);
        gtk_widget_show (GTK_WIDGET (gpmp));
    } else {
        gnome_print_master_print (master);
    }

    gtk_object_unref (GTK_OBJECT (master));
    gtk_object_unref (GTK_OBJECT (printable));
}


/* File/Print callback */
static void
tasks_control_print_cmd (BonoboUIComponent *uic,
             gpointer data,
             const char *path)
{
    ETasks *tasks;
    GtkWidget *gpd, *mode_box, *portrait_radio, *landscape_radio;
    GtkWidget *dialog_vbox, *dialog_hbox, *mode_frame;
    GList *children;
    GSList *group;
    gboolean preview = FALSE, landscape = FALSE;
    GnomePrinter *printer;
    int copies;
    gboolean collate;

    tasks = E_TASKS (data);

    gpd = gnome_print_dialog_new (_("Print Tasks"),
                      GNOME_PRINT_DIALOG_COPIES);

    mode_frame = gtk_frame_new (_("Orientation"));

    mode_box = gtk_vbox_new (FALSE, 4);
    gtk_container_add (GTK_CONTAINER (mode_frame), mode_box);

    /* Portrait */
    portrait_radio = gtk_radio_button_new_with_label (NULL, _("Portrait"));
    group = gtk_radio_button_group (GTK_RADIO_BUTTON (portrait_radio));
    gtk_box_pack_start (GTK_BOX (mode_box), portrait_radio,
                FALSE, FALSE, 0);

    /* Landscape */
    landscape_radio = gtk_radio_button_new_with_label (group,
                               _("Landscape"));
    gtk_box_pack_start (GTK_BOX (mode_box), landscape_radio,
                FALSE, FALSE, 0);

    gtk_widget_show_all (mode_frame);

    /* A bit of a hack to insert our own Orientation option. */
    dialog_vbox = GNOME_DIALOG (gpd)->vbox;
    children = gtk_container_children (GTK_CONTAINER (dialog_vbox));
    dialog_hbox = children->next->data;
    g_list_free (children);
    gtk_box_pack_start (GTK_BOX (dialog_hbox), mode_frame,
                FALSE, FALSE, 3);

    gnome_dialog_set_default (GNOME_DIALOG (gpd), GNOME_PRINT_PRINT);

    /* Run dialog */
    switch (gnome_dialog_run (GNOME_DIALOG (gpd))) {
    case GNOME_PRINT_PRINT:
        break;

    case GNOME_PRINT_PREVIEW:
        preview = TRUE;
        break;

    case -1:
        return;

    default:
        gnome_dialog_close (GNOME_DIALOG (gpd));
        return;
    }

    gnome_print_dialog_get_copies (GNOME_PRINT_DIALOG (gpd),
                       &copies, &collate);
    if (GTK_TOGGLE_BUTTON (landscape_radio)->active)
        landscape = TRUE;

    printer = gnome_print_dialog_get_printer (GNOME_PRINT_DIALOG (gpd));

    gnome_dialog_close (GNOME_DIALOG (gpd));

    print_tasks (tasks, preview, landscape, copies, collate);
}

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

    tasks = E_TASKS (data);

    print_tasks (tasks, TRUE, FALSE, 1, FALSE);
}