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/*
 * Shortcut.c: implements shortcuts and shortcut group models
 *
 * Author:
 *   Miguel de Icaza (miguel@kernel.org)
 *
 * (C) 2000 Helix Code, Inc.
 *
 */
#include <config.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkmisc.h>
#include <libgnome/libgnome.h>
#include "e-util/e-util.h"
#include "e-shortcut.h"
#include "shortcut-bar/e-shortcut-bar.h"
#include "shortcut-bar/e-clipped-label.h"

#define SHORTCUT_PARENT_TYPE gtk_object_get_type ()
#define SHORTCUT_BAR_MODEL_PARENT_TYPE gtk_object_get_type ()
#define SHORTCUT_GROUP_PARENT_TYPE gtk_object_get_type ()

static GtkObjectClass *shortcut_parent_class;
static GtkObjectClass *shortcut_group_parent_class;
static GtkObjectClass *shortcut_bar_model_parent_class;

enum {
    STRUCTURE_CHANGED,
    LAST_SIGNAL
};

static void
es_destroy (GtkObject *object)
{
    EShortcut *ef = E_SHORTCUT (object);

    if (ef->efolder != NULL)
        gtk_object_unref (GTK_OBJECT (ef->efolder));
              
    shortcut_parent_class->destroy (object);
}

static void
e_shortcut_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = es_destroy;
    shortcut_parent_class = gtk_type_class (SHORTCUT_PARENT_TYPE);
}

static void
esg_destroy (GtkObject *object)
{
    EShortcutGroup *efg = E_SHORTCUT_GROUP (object);
    const int shortcut_count = efg->shortcuts->len;
    int i;
        
    g_free (efg->title);

    for (i = 0; i < shortcut_count; i++){
        EShortcut *es = g_array_index (efg->shortcuts, EShortcut *, i);

        if (es != NULL)
            gtk_object_unref (GTK_OBJECT (es));
    }
    
    g_array_free (efg->shortcuts, TRUE);
    efg->model = NULL;
    
    shortcut_group_parent_class->destroy (object);
}

static void
e_shortcut_group_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = esg_destroy;
    shortcut_parent_class = gtk_type_class (SHORTCUT_GROUP_PARENT_TYPE);
}

static void
e_shortcut_group_init (GtkObject *object)
{
    EShortcutGroup *esg = E_SHORTCUT_GROUP (object);

    GTK_OBJECT_UNSET_FLAGS (GTK_OBJECT (object), GTK_FLOATING);
    
    esg->shortcuts = g_array_new (FALSE, FALSE, sizeof (EShortcut *));
}

EShortcut *
e_shortcut_new (EFolder *efolder)
{
    EShortcut *shortcut = gtk_type_new (e_shortcut_get_type ());

    shortcut->efolder = efolder;
    gtk_object_ref (GTK_OBJECT (efolder));

    return shortcut;
}

EShortcutGroup *
e_shortcut_group_new (const char *title, EIconBarViewType type)
{
    EShortcutGroup *shortcut_group = gtk_type_new (e_shortcut_group_get_type ());

    shortcut_group->title = g_strdup (title);
    shortcut_group->type = type;
    return shortcut_group;
}

void
e_shortcut_group_append (EShortcutGroup *sg, EShortcut *shortcut)
{
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));
    g_return_if_fail (shortcut != NULL);
    g_return_if_fail (E_IS_SHORTCUT (shortcut));

    gtk_object_ref (GTK_OBJECT (shortcut));
    gtk_object_sink (GTK_OBJECT (shortcut));
    
    g_array_append_val (sg->shortcuts, shortcut);

    /* FIXME: Broadcast change */
}

void
e_shortcut_group_remove (EShortcutGroup *sg, EShortcut *shortcut)
{
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));
    g_return_if_fail (shortcut != NULL);
    g_return_if_fail (E_IS_SHORTCUT (sg));

    {
        const int len = sg->shortcuts->len;
        int i;
        
        for (i = 0; i < len; i++){
            EShortcut *es = g_array_index (sg->shortcuts, EShortcut *, i);

            if (es == shortcut){
                g_array_remove_index (sg->shortcuts, i);
                /* FIXME: Broadcast change */
                return;
            }
        }
    }
}

void
e_shortcut_group_move (EShortcutGroup *sg, int from, int to)
{
    EShortcut *t;
    
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));

    g_return_if_fail (from < sg->shortcuts->len);
    g_return_if_fail (to < sg->shortcuts->len);
    g_return_if_fail (from >= 0);
    g_return_if_fail (to >= 0);
    
    if (from == to)
        return;

    t = g_array_index (sg->shortcuts, EShortcut *, from);
    g_array_index (sg->shortcuts, EShortcut *, from) =
        g_array_index (sg->shortcuts, EShortcut *, to);
    g_array_index (sg->shortcuts, EShortcut *, to) = t;
    
    /* FIXME: Broadcast change */
}

void
e_shortcut_group_rename (EShortcutGroup *sg, const char *text)
{
    GSList *l;
    int id;
    
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));

    id = e_group_num_from_group_ptr (sg->model, sg);
    for (l = sg->model->views; l; l = l->next){
        EShortcutBar *shortcut_bar = l->data;
        GtkWidget *label;

        label = e_clipped_label_new (text);

        gtk_misc_set_alignment (GTK_MISC (label), 0.5, 0.5);
        gtk_widget_show (label);

        e_group_bar_set_group_button_label (
            E_GROUP_BAR (shortcut_bar), id, label);
    }
}

static void
esb_destroy (GtkObject *object)
{
    EShortcutBarModel *esb = E_SHORTCUT_BAR_MODEL (object);
    const int count = esb->groups->len;
    int i;
    
    for (i = 0; i < count; i++){
        EShortcutGroup *esg = g_array_index (esb->groups, EShortcutGroup *, i);
        
        gtk_object_destroy (GTK_OBJECT (esg));
    }

    g_array_free (esb->groups, TRUE);
    shortcut_bar_model_parent_class->destroy (object);
}

static void
e_shortcut_bar_model_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = esb_destroy;
    shortcut_bar_model_parent_class = gtk_type_class (SHORTCUT_BAR_MODEL_PARENT_TYPE);
}

static void
e_shortcut_bar_model_init (GtkObject *object)
{
    EShortcutBarModel *esb = E_SHORTCUT_BAR_MODEL (object);

    /* The shortcut bar model is self owned */
    GTK_OBJECT_UNSET_FLAGS (object, GTK_FLOATING);
    
    esb->groups = g_array_new (FALSE, FALSE, sizeof (EShortcutGroup *));
}

EShortcutBarModel *
e_shortcut_bar_model_new (void)
{
    EShortcutBarModel *bm;

    bm = gtk_type_new (e_shortcut_bar_model_get_type ());

    return bm;
}

void
e_shortcut_bar_model_append (EShortcutBarModel *bm, EShortcutGroup *sg)
{
    g_return_if_fail (bm != NULL);
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_BAR_MODEL (bm));
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));

    gtk_object_ref (GTK_OBJECT (sg));
    gtk_object_sink (GTK_OBJECT (sg));

    sg->model = bm;
    
    g_array_append_val (bm->groups, sg);
}

EShortcutGroup *
e_shortcut_group_from_pos (EShortcutBarModel *bm, int group_num)
{
    EShortcutGroup *group;
    
    if (group_num == -1)
        return NULL;

    group = g_array_index (bm->groups, EShortcutGroup *, group_num);
    return group;
}

EShortcut *
e_shortcut_from_pos (EShortcutGroup *group, int item_num)
{
    EShortcut *shortcut;

    g_return_val_if_fail (group != NULL, NULL);
    g_return_val_if_fail (E_IS_SHORTCUT_GROUP (group), NULL);
    
    if (item_num == -1)
        return NULL;

    g_return_val_if_fail (item_num < group->shortcuts->len, NULL);

    shortcut = g_array_index (group->shortcuts, EShortcut *, item_num);
    return shortcut;
}

static void
populate_group (EShortcutBarModel *bm, EShortcutGroup *esg, EShortcutBar *shortcut_bar)
{
    int group_num, i;
    const int items = esg->shortcuts->len;

    group_num = e_shortcut_bar_add_group (shortcut_bar, esg->title);
    e_shortcut_bar_set_view_type (shortcut_bar, group_num, esg->type);

    for (i = 0; i < items; i++){
        EShortcut *shortcut = E_SHORTCUT (g_array_index (esg->shortcuts, EShortcut *, i));
        EFolder *folder = shortcut->efolder;
        char *type = NULL;
        
        switch (folder->type){
        case E_FOLDER_SUMMARY:
            type = "summary:";
            break;

        case E_FOLDER_MAIL:
            type = "mail:";
            break;
            
        case E_FOLDER_CONTACTS:
            type = "contacts:";
            break;
            
        case E_FOLDER_CALENDAR:
            type = "calendar:";
            break;
            
        case E_FOLDER_TASKS:
            type = "todo:";
            break;
            
        case E_FOLDER_OTHER:
            type = "file:";
            break;

        default:
            g_assert_not_reached ();
        }
        
        e_shortcut_bar_add_item (shortcut_bar, group_num, type, folder->name);
    }
}

static void
populate_from_model (EShortcutBarModel *bm, EShortcutBar *shortcut_bar)
{
    const int groups = bm->groups->len;
    int i;
    
    for (i = 0; i < groups; i++){
        EShortcutGroup *esg;

        esg = g_array_index (bm->groups, EShortcutGroup *, i);

        populate_group (bm, esg, shortcut_bar);
    }
    
}

static struct {
    char *prefix, *path;
    GdkPixbuf *image;
} shell_icons[] = {
    { "summary:", "evolution-today.png", NULL },
    { "mail:", "evolution-inbox.png", NULL },
    { "calendar:", "evolution-calendar.png", NULL },
    { "contacts:", "evolution-contacts.png", NULL },
    { "notes:", "evolution-notes.png", NULL },
    { "todo:", "evolution-tasks.png", NULL }
};
#define NSHELL_ICONS (sizeof (shell_icons) / sizeof (shell_icons[0]))

static GdkPixbuf *
shell_icon_cb (EShortcutBar *shortcut_bar, const gchar *url, gpointer data)
{
    int i;

    for (i = 0; i < NSHELL_ICONS; i++) {
        if (!strncmp (shell_icons[i].prefix, url,
                  strlen (shell_icons[i].prefix))) {
            if (!shell_icons[i].image) {
                char *pixmap_path;

                pixmap_path = g_strconcat (EVOLUTION_IMAGES "/", shell_icons[i].path, NULL);
                if (pixmap_path)
                    shell_icons[i].image = gdk_pixbuf_new_from_file (pixmap_path);
                else {
                    g_warning ("Couldn't find image: %s",
                           pixmap_path);
                }
                g_free (pixmap_path);
            }
            return shell_icons[i].image;
        }
    }

    return NULL;
}

static void
view_destroyed (EShortcutBar *shortcut_bar, EShortcutBarModel *bm)
{
    bm->views = g_slist_remove (bm->views, shortcut_bar);
}

GtkWidget *
e_shortcut_bar_view_new (EShortcutBarModel *bm)
{
    GtkWidget *shortcut_bar;
    
    gtk_widget_push_visual (gdk_rgb_get_visual ());
    gtk_widget_push_colormap (gdk_rgb_get_cmap ());

    shortcut_bar = e_shortcut_bar_new ();
    e_shortcut_bar_set_icon_callback (E_SHORTCUT_BAR (shortcut_bar),
                      shell_icon_cb, NULL);

    gtk_widget_pop_visual ();
    gtk_widget_pop_colormap ();

    populate_from_model (bm, E_SHORTCUT_BAR (shortcut_bar));

    bm->views = g_slist_prepend (bm->views, shortcut_bar);
    gtk_signal_connect (GTK_OBJECT (shortcut_bar), "destroy", GTK_SIGNAL_FUNC (view_destroyed), bm);
    
    return shortcut_bar;
}

int
e_group_num_from_group_ptr (EShortcutBarModel *bm, EShortcutGroup *group)
{
    const int n = bm->groups->len;
    int i;
    
    for (i = 0; i < n; i++)
        if (g_array_index (bm->groups, EShortcutGroup *, i) == group)
            return i;
    return -1;
}

/*
 * Sets the view mode in all the views
 */
void
e_shortcut_group_set_view_type (EShortcutGroup *group, EIconBarViewType type)
{
    GSList *l;
    int group_num;
    
    g_return_if_fail (group != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (group));

    group_num = e_group_num_from_group_ptr (group->model, group);

    g_assert (group_num != -1);
    
    group->type = type;
    
    for (l = group->model->views; l ; l = l->next){
        EShortcutBar *shortcut_bar = l->data;

        e_shortcut_bar_set_view_type (shortcut_bar, group_num, type);
    }
}

gint
e_shortcut_bar_model_add_group (EShortcutBarModel *model)
{
    int id = -1;
    GSList *l = NULL;
    
    g_return_val_if_fail (model != NULL, -1);
    g_return_val_if_fail (E_IS_SHORTCUT_BAR_MODEL (model), -1);

    for (l = model->views; l; l = l->next){
        EShortcutBar *shortcut_bar = l->data;
        
        id = e_shortcut_bar_add_group (shortcut_bar, _("New group"));
    }

    return id;
}

void
e_shortcut_bar_model_remove_group (EShortcutBarModel *model, EShortcutGroup *sg)
{
    GSList *l = NULL;
    int group_num;
    
    g_return_if_fail (model != NULL);
    g_return_if_fail (E_IS_SHORTCUT_BAR_MODEL (model));
    g_return_if_fail (sg != NULL);
    g_return_if_fail (E_IS_SHORTCUT_GROUP (sg));

    group_num = e_group_num_from_group_ptr (model, sg);
    
    for (l = model->views; l; l = l->next){
        EShortcutBar *shortcut_bar = l->data;
        
        e_shortcut_bar_remove_group (shortcut_bar, group_num);
    }
    
}

E_MAKE_TYPE (e_shortcut, "EShortcut", EShortcut, e_shortcut_class_init, NULL, SHORTCUT_PARENT_TYPE);
E_MAKE_TYPE (e_shortcut_group, "EShortcutGroup", EShortcutGroup, e_shortcut_group_class_init, e_shortcut_group_init, SHORTCUT_GROUP_PARENT_TYPE);
E_MAKE_TYPE (e_shortcut_bar_model, "EShortcutBarModel", EShortcutBarModel, e_shortcut_bar_model_class_init, e_shortcut_bar_model_init, SHORTCUT_BAR_MODEL_PARENT_TYPE);