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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-tree-simple.c: a Tree Model that offers a function pointer
* interface to using ETreeModel, similar to ETableSimple.
*
* Author:
* Chris Toshok (toshok@ximian.com)
*
* (C) 2000 Ximian, Inc. */
#include <config.h>
#include <gtk/gtksignal.h>
#include "gal/util/e-util.h"
#include "e-tree-simple.h"
#define PARENT_TYPE E_TREE_MODEL_TYPE
static int
simple_column_count (ETableModel *etm)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->col_count)
return simple->col_count (etm, simple->model_data);
else
return 0;
}
/* The default for simple_duplicate_value is to return the raw value. */
static void *
simple_duplicate_value (ETableModel *etm, int col, const void *value)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->duplicate_value)
return simple->duplicate_value (etm, col, value, simple->model_data);
else
return (void *)value;
}
static void
simple_free_value (ETableModel *etm, int col, void *value)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->free_value)
simple->free_value (etm, col, value, simple->model_data);
}
static void *
simple_initialize_value (ETableModel *etm, int col)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->initialize_value)
return simple->initialize_value (etm, col, simple->model_data);
else
return NULL;
}
static gboolean
simple_value_is_empty (ETableModel *etm, int col, const void *value)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->value_is_empty)
return simple->value_is_empty (etm, col, value, simple->model_data);
else
return FALSE;
}
static char *
simple_value_to_string (ETableModel *etm, int col, const void *value)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
if (simple->value_to_string)
return simple->value_to_string (etm, col, value, simple->model_data);
else
return g_strdup ("");
}
static void *
simple_value_at (ETreeModel *etm, ETreePath *node, int col)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
return simple->value_at (etm, node, col, simple->model_data);
}
static GdkPixbuf *
simple_icon_at (ETreeModel *etm, ETreePath *node)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
return simple->icon_at (etm, node, simple->model_data);
}
static void
simple_set_value_at (ETreeModel *etm, ETreePath *node, int col, const void *val)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
simple->set_value_at (etm, node, col, val, simple->model_data);
}
static gboolean
simple_is_editable (ETreeModel *etm, ETreePath *node, int col)
{
ETreeSimple *simple = E_TREE_SIMPLE(etm);
return simple->is_editable (etm, node, col, simple->model_data);
}
static void
e_tree_simple_class_init (GtkObjectClass *object_class)
{
ETreeModelClass *model_class = (ETreeModelClass *) object_class;
ETableModelClass *table_model_class = (ETableModelClass *) object_class;
table_model_class->column_count = simple_column_count;
table_model_class->duplicate_value = simple_duplicate_value;
table_model_class->free_value = simple_free_value;
table_model_class->initialize_value = simple_initialize_value;
table_model_class->value_is_empty = simple_value_is_empty;
table_model_class->value_to_string = simple_value_to_string;
model_class ->icon_at = simple_icon_at;
model_class ->value_at = simple_value_at;
model_class ->set_value_at = simple_set_value_at;
model_class ->is_editable = simple_is_editable;
}
E_MAKE_TYPE(e_tree_simple, "ETreeSimple", ETreeSimple, e_tree_simple_class_init, NULL, PARENT_TYPE)
/**
* e_tree_simple_new:
* @col_count:
* @duplicate_value:
* @free_value:
* @initialize_value:
* @value_is_empty:
* @value_to_string:
* @icon_at:
* @value_at:
* @set_value_at:
* @is_editable:
* @model_data:
*
* This initializes a new ETreeSimpleModel object. ETreeSimpleModel is
* an implementaiton of the abstract class ETreeModel. The ETreeSimpleModel
* is designed to allow people to easily create ETreeModels without having
* to create a new GtkType derived from ETreeModel every time they need one.
*
* Instead, ETreeSimpleModel uses a setup based in callback functions, every
* callback function signature mimics the signature of each ETreeModel method
* and passes the extra @data pointer to each one of the method to provide them
* with any context they might want to use.
*
* ETreeSimple is to ETreeModel as ETableSimple is to ETableModel.
*
* Return value: An ETreeSimple object (which is also an ETreeModel
* object).
**/
ETreeModel *
e_tree_simple_new (ETableSimpleColumnCountFn col_count,
ETableSimpleDuplicateValueFn duplicate_value,
ETableSimpleFreeValueFn free_value,
ETableSimpleInitializeValueFn initialize_value,
ETableSimpleValueIsEmptyFn value_is_empty,
ETableSimpleValueToStringFn value_to_string,
ETreeSimpleIconAtFn icon_at,
ETreeSimpleValueAtFn value_at,
ETreeSimpleSetValueAtFn set_value_at,
ETreeSimpleIsEditableFn is_editable,
gpointer model_data)
{
ETreeSimple *etg;
etg = gtk_type_new (e_tree_simple_get_type ());
etg->col_count = col_count;
etg->duplicate_value = duplicate_value;
etg->free_value = free_value;
etg->initialize_value = initialize_value;
etg->value_is_empty = value_is_empty;
etg->value_to_string = value_to_string;
etg->icon_at = icon_at;
etg->value_at = value_at;
etg->set_value_at = set_value_at;
etg->is_editable = is_editable;
etg->model_data = model_data;
return (ETreeModel*)etg;
}
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