path: root/calendar/gui/e-comp-editor-registry.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-comp-editor-registry.c
 *
 * Copyright (C) 2002  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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * Author: JP Rosevear
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <gnome.h>
#include "e-comp-editor-registry.h"

struct _ECompEditorRegistryPrivate {
    GHashTable *editors;
};

struct _ECompEditorRegistryData
{
    ECompEditorRegistry *registry;
    CompEditor *editor;
    char *uid;
};

typedef struct _ECompEditorRegistryData ECompEditorRegistryData;
typedef struct _ECompEditorRegistryForeachData ECompEditorRegistryForeachData;

static void editor_destroy_cb (gpointer data, GObject *where_object_was);

G_DEFINE_TYPE (ECompEditorRegistry, e_comp_editor_registry, G_TYPE_OBJECT)

static void
registry_data_free (gpointer data)
{
    ECompEditorRegistryData *rdata = data;

    if (rdata->editor)
        g_object_weak_unref (G_OBJECT (rdata->editor), editor_destroy_cb, rdata);
    g_free (rdata->uid);
    g_free (rdata);
}

static void
e_comp_editor_registry_dispose (GObject *obj)
{
    ECompEditorRegistry *reg;
    ECompEditorRegistryPrivate *priv;

    reg = E_COMP_EDITOR_REGISTRY (obj);
    priv = reg->priv;
    
    if (priv->editors) {
        g_hash_table_destroy (priv->editors);
        priv->editors = NULL;
    }

    (* G_OBJECT_CLASS (e_comp_editor_registry_parent_class)->dispose) (obj);
}

static void
e_comp_editor_registry_finalize (GObject *obj)
{
    ECompEditorRegistry *reg;
    ECompEditorRegistryPrivate *priv;

    reg = E_COMP_EDITOR_REGISTRY (obj);
    priv = reg->priv;

    g_free (priv);

    (* G_OBJECT_CLASS (e_comp_editor_registry_parent_class)->finalize) (obj);
}

static void
e_comp_editor_registry_class_init (ECompEditorRegistryClass *klass)
{
    GObjectClass *object_class;

    object_class = G_OBJECT_CLASS (klass);

    object_class->dispose = e_comp_editor_registry_dispose;
    object_class->finalize = e_comp_editor_registry_finalize;
}

static void
e_comp_editor_registry_init (ECompEditorRegistry *reg)
{
    ECompEditorRegistryPrivate *priv;

    priv = g_new0 (ECompEditorRegistryPrivate, 1);

    reg->priv = priv;
    priv->editors = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, registry_data_free);
}

GObject *
e_comp_editor_registry_new (void)
{
    return g_object_new (E_TYPE_COMP_EDITOR_REGISTRY, NULL);
}

void
e_comp_editor_registry_add (ECompEditorRegistry *reg, CompEditor *editor, gboolean remote)
{
    ECompEditorRegistryPrivate *priv;
    ECompEditorRegistryData *rdata;
    ECalComponent *comp;
    const char *uid;
    
    g_return_if_fail (reg != NULL);
    g_return_if_fail (E_IS_COMP_EDITOR_REGISTRY (reg));
    g_return_if_fail (editor != NULL);
    g_return_if_fail (IS_COMP_EDITOR (editor));

    priv = reg->priv;
    
    comp = comp_editor_get_comp (editor);
    e_cal_component_get_uid (comp, &uid);

    rdata = g_new0 (ECompEditorRegistryData, 1);

    rdata->registry = reg;
    rdata->editor = editor;
    rdata->uid = g_strdup (uid);

    g_hash_table_insert (priv->editors, g_strdup (uid), rdata);

    /* FIXME Need to know when uid on the editor changes (if the component changes locations) */
    g_object_weak_ref (G_OBJECT (editor), editor_destroy_cb, rdata);
}

CompEditor *
e_comp_editor_registry_find (ECompEditorRegistry *reg, const char *uid)
{
    ECompEditorRegistryPrivate *priv;
    ECompEditorRegistryData *rdata;
    
    g_return_val_if_fail (reg != NULL, NULL);
    g_return_val_if_fail (E_IS_COMP_EDITOR_REGISTRY (reg), NULL);
    g_return_val_if_fail (uid != NULL, NULL);

    priv = reg->priv;

    rdata = g_hash_table_lookup (priv->editors, uid);
    if (rdata != NULL)
        return rdata->editor;
    
    return NULL;
}

static gboolean
foreach_close_cb (gpointer key, gpointer value, gpointer data)
{
    ECompEditorRegistryData *rdata;

    rdata = value;

    g_signal_handlers_block_matched (rdata->editor, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, data);
    
    comp_editor_focus (rdata->editor);
    if (!comp_editor_close (rdata->editor)) {
        g_signal_handlers_unblock_matched (rdata->editor, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, data);
        return FALSE;
    }
    
    g_free (rdata->uid);
    g_free (rdata);
        
    return TRUE;
}

gboolean
e_comp_editor_registry_close_all (ECompEditorRegistry *reg)
{
    ECompEditorRegistryPrivate *priv;
    
    g_return_val_if_fail (reg != NULL, FALSE);
    g_return_val_if_fail (E_IS_COMP_EDITOR_REGISTRY (reg), FALSE);

    priv = reg->priv;

    g_hash_table_foreach_remove (priv->editors, foreach_close_cb, reg);
    if (g_hash_table_size (priv->editors) != 0)
        return FALSE;
    
    return TRUE;
}

static void
editor_destroy_cb (gpointer data, GObject *where_object_was) 
{
    ECompEditorRegistryData *rdata = data;

    /* We null it out because its dead, so we won't try to weak
     * unref it in the hash destroyer */
    rdata->editor = NULL;
    g_hash_table_remove (rdata->registry->priv->editors, rdata->uid);
}