path: root/widgets/table/e-table-specification.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * E-table-specification.c: Implements a savable description of the inital state of a table.
 *
 * Authors:
 *   Chris Lahey <clahey@ximian.com>
 *   Miguel de Icaza (miguel@ximian.com)
 *
 * (C) 2000, 2001 Ximian, Inc.
 */
#include <config.h>
#include <stdlib.h>
#include <gtk/gtksignal.h>
#include <gnome-xml/parser.h>
#include <gnome-xml/xmlmemory.h>
#include "gal/util/e-util.h"
#include "gal/util/e-xml-utils.h"
#include "e-table-specification.h"

#define PARENT_TYPE (gtk_object_get_type ())

static GtkObjectClass *etsp_parent_class;

static void
etsp_destroy (GtkObject *object)
{
    ETableSpecification *etsp = E_TABLE_SPECIFICATION (object);
    int i;

    if (etsp->columns) {
        for (i = 0; etsp->columns[i]; i++) {
            gtk_object_unref (GTK_OBJECT (etsp->columns[i]));
        }
        g_free (etsp->columns);
    }

    if (etsp->state)
        gtk_object_unref (GTK_OBJECT (etsp->state));
    g_free (etsp->click_to_add_message);

    etsp->columns              = NULL;
    etsp->state                = NULL;
    etsp->click_to_add_message = NULL;

    GTK_OBJECT_CLASS (etsp_parent_class)->destroy (object);
}

static void
etsp_class_init (GtkObjectClass *klass)
{
    etsp_parent_class = gtk_type_class (PARENT_TYPE);
    
    klass->destroy = etsp_destroy;
}

static void
etsp_init (ETableSpecification *etsp)
{
    etsp->columns               = NULL;
    etsp->state                 = NULL;

    etsp->no_headers            = FALSE;
    etsp->click_to_add          = FALSE;
    etsp->draw_grid             = FALSE;
    etsp->draw_focus            = TRUE;
    etsp->cursor_mode           = E_TABLE_CURSOR_SIMPLE;
    etsp->selection_mode        = GTK_SELECTION_MULTIPLE;

    etsp->click_to_add_message  = NULL;
}

E_MAKE_TYPE (e_table_specification, "ETableSpecification", ETableSpecification, etsp_class_init, etsp_init, PARENT_TYPE);

/**
 * e_table_specification_new:
 *
 * Creates a new %ETableSpecification object.   This object is used to hold the
 * information about the rendering information for ETable.
 * 
 * Returns: a newly created %ETableSpecification object.
 */
ETableSpecification *
e_table_specification_new (void)
{
    ETableSpecification *etsp = gtk_type_new (E_TABLE_SPECIFICATION_TYPE);

    return (ETableSpecification *) etsp;
}

/**
 * e_table_specification_load_from_file:
 * @specification: An ETableSpecification that you want to modify
 * @filename: a filename that contains an ETableSpecification
 *
 * This routine modifies @specification to reflect the state described
 * by the file @filename.  
 *
 * Returns: TRUE on success, FALSE on failure.
 */
gboolean
e_table_specification_load_from_file (ETableSpecification *specification,
                      const char          *filename)
{
    xmlDoc *doc;
    doc = xmlParseFile (filename);
    if (doc) {
        xmlNode *node = xmlDocGetRootElement (doc);
        e_table_specification_load_from_node (specification, node);
        xmlFreeDoc (doc);
        return TRUE;
    }
    return FALSE;
}

/**
 * e_table_specification_load_from_string:
 * @specification: An ETableSpecification that you want to modify
 * @xml: a stringified representation of an ETableSpecification description.
 *
 * This routine modifies @specification to reflect the state described
 * by @xml.  @xml is typically returned by e_table_specification_save_to_string
 * or it can be embedded in your source code.
 *
 * Returns: TRUE on success, FALSE on failure.
 */
gboolean
e_table_specification_load_from_string (ETableSpecification *specification,
                    const char          *xml)
{
    xmlDoc *doc;
    doc = xmlParseMemory ( (char *) xml, strlen (xml));
    if (doc) {
        xmlNode *node = xmlDocGetRootElement (doc);
        e_table_specification_load_from_node (specification, node);
        xmlFreeDoc (doc);
        return TRUE;
    }

    return FALSE;
}

/**
 * e_table_specification_load_from_node:
 * @specification: An ETableSpecification that you want to modify
 * @node: an xmlNode with an XML ETableSpecification description.
 *
 * This routine modifies @specification to reflect the state described
 * by @node.
 */
void
e_table_specification_load_from_node (ETableSpecification *specification,
                      const xmlNode       *node)
{
    char *temp;
    xmlNode *children;
    GList *list = NULL, *list2;
    int i;

    specification->no_headers = e_xml_get_bool_prop_by_name (node, "no-headers");
    specification->click_to_add = e_xml_get_bool_prop_by_name (node, "click-to-add");
    specification->draw_grid = e_xml_get_bool_prop_by_name (node, "draw-grid");
    specification->draw_focus = e_xml_get_bool_prop_by_name_with_default (node, "draw-focus", TRUE);

    specification->selection_mode = GTK_SELECTION_MULTIPLE;
    temp = e_xml_get_string_prop_by_name (node, "selection-mode");
    if (temp && !strcasecmp (temp, "single")) {
        specification->selection_mode = GTK_SELECTION_SINGLE;
    } else if (temp && !strcasecmp (temp, "browse")) {
        specification->selection_mode = GTK_SELECTION_BROWSE;
    } else if (temp && !strcasecmp (temp, "extended")) {
        specification->selection_mode = GTK_SELECTION_EXTENDED;
    }
    g_free (temp);

    specification->cursor_mode = E_TABLE_CURSOR_SIMPLE;
    temp = e_xml_get_string_prop_by_name (node, "cursor-mode");
    if (temp && !strcasecmp (temp, "line")) {
        specification->cursor_mode = E_TABLE_CURSOR_LINE;
    }
    g_free (temp);
    g_free (specification->click_to_add_message);

    specification->click_to_add_message =
        e_xml_get_string_prop_by_name (
            node, "_click-to-add-message");

    if (specification->state)
        gtk_object_unref (GTK_OBJECT (specification->state));
    specification->state = NULL;
    if (specification->columns) {
        for (i = 0; specification->columns[i]; i++) {
            gtk_object_unref (GTK_OBJECT (specification->columns[i]));
        }
        g_free (specification->columns);
    }
    specification->columns = NULL;

    for (children = node->xmlChildrenNode; children; children = children->next) {
        if (!strcmp (children->name, "ETableColumn")) {
            ETableColumnSpecification *col_spec = e_table_column_specification_new ();

            e_table_column_specification_load_from_node (col_spec, children);
            list = g_list_append (list, col_spec);
        } else if (specification->state == NULL && !strcmp (children->name, "ETableState")) {
            specification->state = e_table_state_new ();
            e_table_state_load_from_node (specification->state, children);
        }
    }

    specification->columns = g_new (ETableColumnSpecification *, g_list_length (list) + 1);
    for (list2 = list, i = 0; list2; list2 = g_list_next (list2), i++) {
        specification->columns[i] = list2->data;
    }
    specification->columns[i] = NULL;
    g_list_free (list);
}

/**
 * e_table_specification_save_to_file:
 * @specification: An %ETableSpecification that you want to save
 * @filename: a file name to store the specification.
 *
 * This routine stores the @specification into @filename.  
 *
 * Returns: the number of bytes written or -1 on error.
 */
int
e_table_specification_save_to_file (ETableSpecification *specification,
                    const char          *filename)
{
    xmlDoc *doc;

    g_return_val_if_fail (specification != NULL, -1);
    g_return_val_if_fail (filename != NULL, -1);
    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (specification), -1);
    
    doc = xmlNewDoc ("1.0");
    xmlDocSetRootElement (doc, e_table_specification_save_to_node (specification, doc));
    return xmlSaveFile (filename, doc);
}

/**
 * e_table_specification_save_to_string:
 * @specification: An %ETableSpecification that you want to stringify
 *
 * Saves the state of @specification to a string.
 *
 * Returns: an g_alloc() allocated string containing the stringified 
 * representation of @specification.  This stringified representation
 * uses XML as a convenience.
 */
char *
e_table_specification_save_to_string (ETableSpecification *specification)
{
    char *ret_val;
    xmlChar *string;
    int length;
    xmlDoc *doc;

    g_return_val_if_fail (specification != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (specification), NULL);
    
    doc = xmlNewDoc ("1.0");
    xmlDocSetRootElement (doc, e_table_specification_save_to_node (specification, doc));
    xmlDocDumpMemory (doc, &string, &length);

    ret_val = g_strdup (string);
    xmlFree (string);
    return ret_val;
}

/**
 * e_table_specification_save_to_node:
 * @specification: An ETableSpecification that you want to store.
 * @doc: Node where the specification is saved
 *
 * This routine saves the %ETableSpecification state in the object @specification
 * into the xmlDoc represented by @doc.  
 *
 * Returns: The node that has been attached to @doc with the contents
 * of the ETableSpecification.
 */
xmlNode *
e_table_specification_save_to_node (ETableSpecification *specification,
                    xmlDoc              *doc)
{
    xmlNode *node;
    char *s;

    g_return_val_if_fail (doc != NULL, NULL);
    g_return_val_if_fail (specification != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (specification), NULL);

    node = xmlNewNode (NULL, "ETableSpecification");
    e_xml_set_bool_prop_by_name (node, "no-headers", specification->no_headers);
    e_xml_set_bool_prop_by_name (node, "click-to-add", specification->click_to_add);
    e_xml_set_bool_prop_by_name (node, "draw-grid", specification->draw_grid);
    e_xml_set_bool_prop_by_name (node, "draw-focus", specification->draw_focus);

    switch (specification->selection_mode){
    case GTK_SELECTION_SINGLE:
        s = "single";
        break;
    case GTK_SELECTION_BROWSE:
        s = "browse";
        break;
    default:
    case GTK_SELECTION_EXTENDED:
        s = "extended";
    }
    xmlSetProp (node, "selection-mode", s);
    if (specification->cursor_mode == E_TABLE_CURSOR_LINE)
        s = "line";
    else
        s = "cell";
    xmlSetProp (node, "cursor-mode", s);

    xmlSetProp (node, "_click-to-add-message", specification->click_to_add_message);

    if (specification->columns){
        int i;
        
        for (i = 0; specification->columns [i]; i++)
            e_table_column_specification_save_to_node (
                specification->columns [i],
                node);
    }

    if (specification->state)
        e_table_state_save_to_node (specification->state, node);

    return node;
}

/**
 * e_table_specification_duplicate:
 * @spec: specification to duplicate
 *
 * This creates a copy of the %ETableSpecification @spec
 *
 * Returns: The duplicated %ETableSpecification.
 */
ETableSpecification *
e_table_specification_duplicate (ETableSpecification *spec)
{
    ETableSpecification *new_spec;
    char *spec_str;

    g_return_val_if_fail (spec != NULL, NULL);
    g_return_val_if_fail (E_IS_TABLE_SPECIFICATION (spec), NULL);
    
    new_spec = e_table_specification_new ();
    spec_str = e_table_specification_save_to_string (spec);
    e_table_specification_load_from_string (new_spec, spec_str);
    g_free (spec_str);
    
    return new_spec;
}