path: root/filter/filter-file.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2002 Ximian, Inc. (www.ximian.com)
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */


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

#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>

#include <gtk/gtk.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-file-entry.h>

#include "filter-file.h"
#include "libedataserver/e-sexp.h"
#include "e-util/e-error.h"

#define d(x)

static gboolean validate (FilterElement *fe);
static int file_eq (FilterElement *fe, FilterElement *cm);
static void xml_create (FilterElement *fe, xmlNodePtr node);
static xmlNodePtr xml_encode (FilterElement *fe);
static int xml_decode (FilterElement *fe, xmlNodePtr node);
static GtkWidget *get_widget (FilterElement *fe);
static void build_code (FilterElement *fe, GString *out, struct _FilterPart *ff);
static void format_sexp (FilterElement *, GString *);

static void filter_file_class_init (FilterFileClass *klass);
static void filter_file_init (FilterFile *ff);
static void filter_file_finalise (GObject *obj);


static FilterElementClass *parent_class = NULL;


GType
filter_file_get_type (void)
{
    static GType type = 0;
    
    if (!type) {
        static const GTypeInfo info = {
            sizeof (FilterFileClass),
            NULL, /* base_class_init */
            NULL, /* base_class_finalize */
            (GClassInitFunc) filter_file_class_init,
            NULL, /* class_finalize */
            NULL, /* class_data */
            sizeof (FilterFile),
            0,    /* n_preallocs */
            (GInstanceInitFunc) filter_file_init,
        };
        
        type = g_type_register_static (FILTER_TYPE_ELEMENT, "FilterFile", &info, 0);
    }
    
    return type;
}

static void
filter_file_class_init (FilterFileClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);
    FilterElementClass *fe_class = FILTER_ELEMENT_CLASS (klass);
    
    parent_class = g_type_class_ref (FILTER_TYPE_ELEMENT);
    
    object_class->finalize = filter_file_finalise;
    
    /* override methods */
    fe_class->validate = validate;
    fe_class->eq = file_eq;
    fe_class->xml_create = xml_create;
    fe_class->xml_encode = xml_encode;
    fe_class->xml_decode = xml_decode;
    fe_class->get_widget = get_widget;
    fe_class->build_code = build_code;
    fe_class->format_sexp = format_sexp;
}

static void
filter_file_init (FilterFile *ff)
{
    ;
}

static void
filter_file_finalise (GObject *obj)
{
    FilterFile *ff = (FilterFile *) obj;
    
    xmlFree (ff->type);
    g_free (ff->path);
    
        G_OBJECT_CLASS (parent_class)->finalize (obj);
}

/**
 * filter_file_new:
 *
 * Create a new FilterFile object.
 * 
 * Return value: A new #FilterFile object.
 **/
FilterFile *
filter_file_new (void)
{
    return (FilterFile *) g_object_new (FILTER_TYPE_FILE, NULL, NULL);
}


FilterFile *
filter_file_new_type_name (const char *type)
{
    FilterFile *file;
    
    file = filter_file_new ();
    file->type = xmlStrdup (type);
    
    return file;
}

void
filter_file_set_path (FilterFile *file, const char *path)
{
    g_free (file->path);
    file->path = g_strdup (path);
}

static gboolean
validate (FilterElement *fe)
{
    FilterFile *file = (FilterFile *) fe;
    struct stat st;
    
    if (!file->path) {
        /* FIXME: FilterElement should probably have a
                   GtkWidget member pointing to the value gotten with
                   ::get_widget() so that we can get the parent window
                   here. */
        e_error_run(NULL, "filter:no-file", NULL);

        return FALSE;
    }
    
    /* FIXME: do more to validate command-lines? */
    
    if (strcmp (file->type, "file") == 0) {
        if (stat (file->path, &st) == -1 || !S_ISREG (st.st_mode)) {
            /* FIXME: FilterElement should probably have a
               GtkWidget member pointing to the value gotten with
               ::get_widget() so that we can get the parent window
               here. */
            e_error_run(NULL, "filter:bad-file", file->path, NULL);
            
            return FALSE;
        }
    } else if (strcmp (file->type, "command") == 0) {
        /* only requirements so far is that the command can't
           be an empty string */
        return file->path[0] != '\0';
    }
    
    return TRUE;
}

static int
file_eq (FilterElement *fe, FilterElement *cm)
{
    FilterFile *ff = (FilterFile *)fe, *cf = (FilterFile *)cm;
    
        return FILTER_ELEMENT_CLASS (parent_class)->eq (fe, cm)
        && ((ff->path && cf->path && strcmp (ff->path, cf->path) == 0)
            || (ff->path == NULL && cf->path == NULL))
        && ((ff->type && cf->type && strcmp (ff->type, cf->type) == 0)
            || (ff->type == NULL && cf->type == NULL));
}

static void
xml_create (FilterElement *fe, xmlNodePtr node)
{
    /* parent implementation */
        FILTER_ELEMENT_CLASS (parent_class)->xml_create (fe, node);
}

static xmlNodePtr
xml_encode (FilterElement *fe)
{
    FilterFile *file = (FilterFile *) fe;
    xmlNodePtr cur, value;
    char *type;
    
    type = file->type ? file->type : "file";
    
    d(printf ("Encoding %s as xml\n", type));
    
    value = xmlNewNode (NULL, "value");
    xmlSetProp (value, "name", fe->name);
    xmlSetProp (value, "type", type);
    
    cur = xmlNewChild (value, NULL, type, NULL);
    xmlNodeSetContent (cur, file->path);
    
    return value;
}

static int
xml_decode (FilterElement *fe, xmlNodePtr node)
{
    FilterFile *file = (FilterFile *)fe;
    char *name, *str, *type;
    xmlNodePtr n;
    
    name = xmlGetProp (node, "name");
    type = xmlGetProp (node, "type");
    
    d(printf("Decoding %s from xml %p\n", type, fe));
    d(printf ("Name = %s\n", name));
    
    xmlFree (fe->name);
    fe->name = name;
    xmlFree (file->type);
    file->type = type;
    
    g_free (file->path);
    file->path = NULL;
    
    n = node->children;
    while (n != NULL) {
        if (!strcmp (n->name, type)) {
            str = xmlNodeGetContent (n);
            file->path = g_strdup (str ? str : "");
            xmlFree (str);
            
            d(printf ("  '%s'\n", file->path));
            break;
        } else if (n->type == XML_ELEMENT_NODE) {
            g_warning ("Unknown node type '%s' encountered decoding a %s\n", n->name, type);
        }
        
        n = n->next;
    }
    
    return 0;
}

static void
entry_changed (GtkEntry *entry, FilterElement *fe)
{
    FilterFile *file = (FilterFile *) fe;
    const char *new;
    
    new = gtk_entry_get_text (entry);
    
    g_free (file->path);
    file->path = g_strdup (new);
}

static GtkWidget *
get_widget (FilterElement *fe)
{
    FilterFile *file = (FilterFile *) fe;
    GtkWidget *fileentry, *entry;
    
    fileentry = gnome_file_entry_new (NULL, _("Choose a file"));
    g_object_set (G_OBJECT (fileentry), "use_filechooser", TRUE, NULL);
    gnome_file_entry_set_default_path (GNOME_FILE_ENTRY (fileentry), file->path);
    gnome_file_entry_set_modal (GNOME_FILE_ENTRY (fileentry), TRUE);
    
    entry = gnome_file_entry_gtk_entry (GNOME_FILE_ENTRY (fileentry));
    gtk_entry_set_text (GTK_ENTRY (entry), file->path);
    
    g_signal_connect (entry, "changed", G_CALLBACK (entry_changed), fe);
    
    return fileentry;
}

static void
build_code (FilterElement *fe, GString *out, struct _FilterPart *ff)
{
    return;
}

static void
format_sexp (FilterElement *fe, GString *out)
{
    FilterFile *file = (FilterFile *) fe;
    
    e_sexp_encode_string (out, file->path);
}