path: root/widgets/menus/gal-define-views-model.c

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Chris Lahey <clahey@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include <config.h>

#include <libxml/tree.h>
#include <libxml/parser.h>
#include <libxml/xmlmemory.h>

#include <glib/gi18n.h>
#include "e-util/e-util.h"

#include "gal-define-views-model.h"

G_DEFINE_TYPE (GalDefineViewsModel, gal_define_views_model, E_TABLE_MODEL_TYPE)

/*
 * GalDefineViewsModel callbacks
 * These are the callbacks that define the behavior of our custom model.
 */
static void gal_define_views_model_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gal_define_views_model_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);

enum {
    PROP_0,
    PROP_EDITABLE,
    PROP_COLLECTION
};

static void
gdvm_dispose(GObject *object)
{
    GalDefineViewsModel *model = GAL_DEFINE_VIEWS_MODEL(object);

    if (model->collection)
        g_object_unref(model->collection);
    model->collection = NULL;

    if (G_OBJECT_CLASS (gal_define_views_model_parent_class)->dispose)
        (* G_OBJECT_CLASS (gal_define_views_model_parent_class)->dispose) (object);
}

/* This function returns the number of columns in our ETableModel. */
static gint
gdvm_col_count (ETableModel *etc)
{
    return 1;
}

/* This function returns the number of rows in our ETableModel. */
static gint
gdvm_row_count (ETableModel *etc)
{
    GalDefineViewsModel *views = GAL_DEFINE_VIEWS_MODEL(etc);
    if (views->collection)
        return gal_view_collection_get_count(views->collection);
    else
        return 0;
}

/* This function returns the value at a particular point in our ETableModel. */
static gpointer
gdvm_value_at (ETableModel *etc, gint col, gint row)
{
    GalDefineViewsModel *views = GAL_DEFINE_VIEWS_MODEL(etc);
    const gchar *value;

    value = gal_view_get_title (gal_view_collection_get_view(views->collection, row));

    return (gpointer)(value ? value : "");
}

/* This function sets the value at a particular point in our ETableModel. */
static void
gdvm_set_value_at (ETableModel *etc, gint col, gint row, gconstpointer val)
{
    GalDefineViewsModel *views = GAL_DEFINE_VIEWS_MODEL(etc);
    if (views->editable) {
        e_table_model_pre_change(etc);
        gal_view_set_title(gal_view_collection_get_view(views->collection, row), val);
        e_table_model_cell_changed(etc, col, row);
    }
}

/* This function returns whether a particular cell is editable. */
static gboolean
gdvm_is_cell_editable (ETableModel *etc, gint col, gint row)
{
    return GAL_DEFINE_VIEWS_MODEL(etc)->editable;
}

static void
gdvm_append_row (ETableModel *etm, ETableModel *source, gint row)
{
}

/* This function duplicates the value passed to it. */
static gpointer
gdvm_duplicate_value (ETableModel *etc, gint col, gconstpointer value)
{
    return g_strdup(value);
}

/* This function frees the value passed to it. */
static void
gdvm_free_value (ETableModel *etc, gint col, gpointer value)
{
    g_free(value);
}

static gpointer
gdvm_initialize_value (ETableModel *etc, gint col)
{
    return g_strdup("");
}

static gboolean
gdvm_value_is_empty (ETableModel *etc, gint col, gconstpointer value)
{
    return !(value && *(gchar *)value);
}

static gchar *
gdvm_value_to_string (ETableModel *etc, gint col, gconstpointer value)
{
    return g_strdup(value);
}

/**
 * gal_define_views_model_append
 * @model: The model to add to.
 * @view: The view to add.
 *
 * Adds the given view to the gal define views model.
 */
void
gal_define_views_model_append (GalDefineViewsModel *model,
                   GalView             *view)
{
    ETableModel *etm = E_TABLE_MODEL(model);

    e_table_model_pre_change(etm);
    gal_view_collection_append(model->collection, view);
    e_table_model_row_inserted(etm, gal_view_collection_get_count(model->collection) - 1);
}

static void
gal_define_views_model_class_init (GalDefineViewsModelClass *klass)
{
    ETableModelClass *model_class = E_TABLE_MODEL_CLASS (klass);
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->dispose        = gdvm_dispose;
    object_class->set_property   = gal_define_views_model_set_property;
    object_class->get_property   = gal_define_views_model_get_property;

    g_object_class_install_property (object_class, PROP_EDITABLE,
                     g_param_spec_boolean ("editable",
                                   "Editable",
                                   NULL,
                                   FALSE,
                                   G_PARAM_READWRITE));

    g_object_class_install_property (object_class, PROP_COLLECTION,
                     g_param_spec_object ("collection",
                                  "Collection",
                                  NULL,
                                  GAL_VIEW_COLLECTION_TYPE,
                                  G_PARAM_READWRITE));

    model_class->column_count     = gdvm_col_count;
    model_class->row_count        = gdvm_row_count;
    model_class->value_at         = gdvm_value_at;
    model_class->set_value_at     = gdvm_set_value_at;
    model_class->is_cell_editable = gdvm_is_cell_editable;
    model_class->append_row       = gdvm_append_row;
    model_class->duplicate_value  = gdvm_duplicate_value;
    model_class->free_value       = gdvm_free_value;
    model_class->initialize_value = gdvm_initialize_value;
    model_class->value_is_empty   = gdvm_value_is_empty;
    model_class->value_to_string  = gdvm_value_to_string;
}

static void
gal_define_views_model_init (GalDefineViewsModel *model)
{
    model->collection = NULL;
}

static void
gal_define_views_model_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
    GalDefineViewsModel *model;

    model = GAL_DEFINE_VIEWS_MODEL (object);

    switch (prop_id) {
    case PROP_EDITABLE:
        model->editable = g_value_get_boolean (value);
        break;

    case PROP_COLLECTION:
        e_table_model_pre_change(E_TABLE_MODEL(object));
        if (g_value_get_object (value))
            model->collection = GAL_VIEW_COLLECTION(g_value_get_object (value));
        else
            model->collection = NULL;
        e_table_model_changed(E_TABLE_MODEL(object));
        break;
    }
}

static void
gal_define_views_model_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
    GalDefineViewsModel *model;

    model = GAL_DEFINE_VIEWS_MODEL (object);

    switch (prop_id) {
    case PROP_EDITABLE:
        g_value_set_boolean (value, model->editable);
        break;

    case PROP_COLLECTION:
        g_value_set_object (value, model->collection);

    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

/**
 * gal_define_views_model_new
 *
 * Returns a new define views model.  This is a list of views as an
 * ETable for use in the GalDefineViewsDialog.
 *
 * Returns: The new GalDefineViewsModel.
 */
ETableModel *
gal_define_views_model_new (void)
{
    GalDefineViewsModel *et;

    et = g_object_new (GAL_DEFINE_VIEWS_MODEL_TYPE, NULL);

    return E_TABLE_MODEL(et);
}

/**
 * gal_define_views_model_get_view:
 * @model: The GalDefineViewsModel.
 * @n: Which view to get.
 *
 * Gets the nth view.
 *
 * Returns: The view.
 */
GalView *
gal_define_views_model_get_view (GalDefineViewsModel *model,
                 gint n)
{
    return gal_view_collection_get_view(model->collection, n);
}

/**
 * gal_define_views_model_delete_view:
 * @model: The GalDefineViewsModel.
 * @n: Which view to delete.
 *
 * Deletes the nth view.
 */
void
gal_define_views_model_delete_view (GalDefineViewsModel *model,
                    gint n)
{
    e_table_model_pre_change(E_TABLE_MODEL(model));
    gal_view_collection_delete_view(model->collection, n);
    e_table_model_row_deleted(E_TABLE_MODEL(model), n);
}

/**
 * gal_define_views_model_copy_view:
 * @model: The GalDefineViewsModel.
 * @n: Which view to copy.
 *
 * Copys the nth view.
 */
void
gal_define_views_model_copy_view (GalDefineViewsModel *model,
                  gint n)
{
    ETableModel *etm = E_TABLE_MODEL(model);
    e_table_model_pre_change(etm);
    gal_view_collection_copy_view(model->collection, n);
    e_table_model_row_inserted(etm, gal_view_collection_get_count(model->collection) - 1);
}