1 files changed, 458 insertions, 0 deletions
diff --git a/e-util/e-source.c b/e-util/e-source.c
new file mode 100644
index 0000000000..cc7742d924
--- /dev/null
+++ b/e-util/e-source.c
@@ -0,0 +1,458 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-source.c
+ *
+ * Copyright (C) 2003  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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ettore Perazzoli <ettore@ximian.com>
+ */
+
+#include <config.h>
+
+#include "e-source.h"
+
+#include "e-util-marshal.h"
+#include "e-uid.h"
+
+#include <string.h>
+#include <gal/util/e-util.h>
+
+
+#define PARENT_TYPE G_TYPE_OBJECT
+static GObjectClass *parent_class = NULL;
+
+#define ES_CLASS(obj)  E_SOURCE_CLASS (G_OBJECT_GET_CLASS (obj))
+
+
+/* String used to put the color in the XML.  */
+#define COLOR_FORMAT_STRING "%06x"
+
+
+/* Private members.  */
+
+struct _ESourcePrivate {
+	ESourceGroup *group;
+
+	char *uid;
+	char *name;
+	char *relative_uri;
+
+	gboolean has_color;
+	guint32 color;
+};
+
+
+/* Signals.  */
+
+enum {
+	CHANGED,
+	LAST_SIGNAL
+};
+static unsigned int signals[LAST_SIGNAL] = { 0 };
+
+
+/* Callbacks.  */
+
+static void
+group_weak_notify (ESource *source,
+		   GObject **where_the_object_was)
+{
+	source->priv->group = NULL;
+
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+
+/* GObject methods.  */
+
+static void
+impl_finalize (GObject *object)
+{
+	ESourcePrivate *priv = E_SOURCE (object)->priv;
+
+	g_free (priv->uid);
+	g_free (priv->name);
+	g_free (priv->relative_uri);
+	g_free (priv);
+
+	(* G_OBJECT_CLASS (parent_class)->finalize) (object);
+}
+
+static void
+impl_dispose (GObject *object)
+{
+	ESourcePrivate *priv = E_SOURCE (object)->priv;
+
+	if (priv->group != NULL) {
+		g_object_weak_unref (G_OBJECT (priv->group), (GWeakNotify) group_weak_notify, object);
+		priv->group = NULL;
+	}
+
+	(* G_OBJECT_CLASS (parent_class)->dispose) (object);
+}
+
+
+/* Initialization.  */
+
+static void
+class_init (ESourceClass *class)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+	object_class->dispose  = impl_dispose;
+	object_class->finalize = impl_finalize;
+
+	parent_class = g_type_class_peek_parent (class);
+
+	signals[CHANGED] = 
+		g_signal_new ("changed",
+			      G_OBJECT_CLASS_TYPE (object_class),
+			      G_SIGNAL_RUN_LAST,
+			      G_STRUCT_OFFSET (ESourceClass, changed),
+			      NULL, NULL,
+			      e_util_marshal_VOID__VOID,
+			      G_TYPE_NONE, 0);
+}
+
+static void
+init (ESource *source)
+{
+	ESourcePrivate *priv;
+
+	priv = g_new0 (ESourcePrivate, 1);
+	source->priv = priv;
+}
+
+
+/* Public methods.  */
+
+ESource *
+e_source_new  (const char *name,
+	       const char *relative_uri)
+{
+	ESource *source;
+
+	g_return_val_if_fail (name != NULL, NULL);
+	g_return_val_if_fail (relative_uri != NULL, NULL);
+
+	source = g_object_new (e_source_get_type (), NULL);
+	source->priv->uid = e_uid_new ();
+
+	e_source_set_name (source, name);
+	e_source_set_relative_uri (source, relative_uri);
+	return source;
+}
+
+ESource *
+e_source_new_from_xml_node (xmlNodePtr node)
+{
+	ESource *source;
+	xmlChar *uid;
+
+	uid = xmlGetProp (node, "uid");
+	if (uid == NULL)
+		return NULL;
+
+	source = g_object_new (e_source_get_type (), NULL);
+
+	source->priv->uid = g_strdup (uid);
+	xmlFree (uid);
+
+	if (e_source_update_from_xml_node (source, node, NULL))
+		return source;
+
+	g_object_unref (source);
+	return NULL;
+}
+
+/**
+ * e_source_update_from_xml_node:
+ * @source: An ESource.
+ * @node: A pointer to the node to parse.
+ * 
+ * Update the ESource properties from @node.
+ * 
+ * Return value: %TRUE if the data in @node was recognized and parsed into
+ * acceptable values for @source, %FALSE otherwise.
+ **/
+gboolean
+e_source_update_from_xml_node (ESource *source,
+			       xmlNodePtr node,
+			       gboolean *changed_return)
+{
+	xmlChar *name;
+	xmlChar *relative_uri;
+	xmlChar *color_string;
+	gboolean retval;
+	gboolean changed = FALSE;
+
+	name = xmlGetProp (node, "name");
+	relative_uri = xmlGetProp (node, "relative_uri");
+	color_string = xmlGetProp (node, "color");
+
+	if (name == NULL || relative_uri == NULL) {
+		retval = FALSE;
+		goto done;
+	}
+
+	if (source->priv->name == NULL
+	    || strcmp (name, source->priv->name) != 0
+	    || source->priv->relative_uri == NULL
+	    || strcmp (relative_uri, source->priv->relative_uri) != 0) {
+		g_free (source->priv->name);
+		source->priv->name = g_strdup (name);
+
+		g_free (source->priv->relative_uri);
+		source->priv->relative_uri = g_strdup (relative_uri);
+
+		changed = TRUE;
+	}
+
+	if (color_string == NULL) {
+		if (source->priv->has_color) {
+			source->priv->has_color = FALSE;
+			changed = TRUE;
+		}
+	} else {
+		guint32 color = 0;
+
+		sscanf (color_string, COLOR_FORMAT_STRING, &color);
+		if (! source->priv->has_color || source->priv->color != color) {
+			source->priv->has_color = TRUE;
+			source->priv->color = color;
+			changed = TRUE;
+		}
+	}
+
+	retval = TRUE;
+
+ done:
+	if (changed)
+		g_signal_emit (source, signals[CHANGED], 0);
+
+	if (changed_return != NULL)
+		*changed_return = changed;
+
+	if (name != NULL)
+		xmlFree (name);
+	if (relative_uri != NULL)
+		xmlFree (relative_uri);
+	if (color_string != NULL)
+		xmlFree (color_string);
+
+	return retval;
+}
+
+/**
+ * e_source_name_from_xml_node:
+ * @node: A pointer to an XML node.
+ * 
+ * Assuming that @node is a valid ESource specification, retrieve the name of
+ * the source from it.
+ * 
+ * Return value: Name of the source in the specified @node.  The caller must
+ * free the string.
+ **/
+char *
+e_source_uid_from_xml_node (xmlNodePtr node)
+{
+	xmlChar *uid = xmlGetProp (node, "uid");
+	char *retval;
+
+	if (uid == NULL)
+		return NULL;
+
+	retval = g_strdup (uid);
+	xmlFree (uid);
+	return retval;
+}
+
+void
+e_source_set_group (ESource *source,
+		    ESourceGroup *group)
+{
+	g_return_if_fail (E_IS_SOURCE (source));
+	g_return_if_fail (group == NULL || E_IS_SOURCE_GROUP (group));
+
+	if (source->priv->group == group)
+		return;
+
+	if (source->priv->group != NULL)
+		g_object_weak_unref (G_OBJECT (source->priv->group), (GWeakNotify) group_weak_notify, source);
+
+	source->priv->group = group;
+	if (group != NULL)
+		g_object_weak_ref (G_OBJECT (group), (GWeakNotify) group_weak_notify, source);
+
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+void
+e_source_set_name (ESource *source,
+		   const char *name)
+{
+	g_return_if_fail (E_IS_SOURCE (source));
+
+	if (source->priv->name == name)
+		return;
+
+	g_free (source->priv->name);
+	source->priv->name = g_strdup (name);
+
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+void
+e_source_set_relative_uri (ESource *source,
+			   const char *relative_uri)
+{
+	g_return_if_fail (E_IS_SOURCE (source));
+
+	if (source->priv->relative_uri == relative_uri)
+		return;
+
+	g_free (source->priv->relative_uri);
+	source->priv->relative_uri = g_strdup (relative_uri);
+
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+void
+e_source_set_color (ESource *source,
+		    guint32 color)
+{
+	g_return_if_fail (E_IS_SOURCE (source));
+
+	if (source->priv->has_color && source->priv->color == color)
+		return;
+
+	source->priv->has_color = TRUE;
+	source->priv->color = color;
+
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+void
+e_source_unset_color (ESource *source)
+{
+	g_return_if_fail (E_IS_SOURCE (source));
+
+	if (! source->priv->has_color)
+		return;
+
+	source->priv->has_color = FALSE;
+	g_signal_emit (source, signals[CHANGED], 0);
+}
+
+
+ESourceGroup *
+e_source_peek_group (ESource *source)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), NULL);
+
+	return source->priv->group;
+}
+
+const char *
+e_source_peek_uid (ESource *source)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), NULL);
+
+	return source->priv->uid;
+}
+
+const char *
+e_source_peek_name (ESource *source)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), NULL);
+
+	return source->priv->name;
+}
+
+const char *
+e_source_peek_relative_uri (ESource *source)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), NULL);
+
+	return source->priv->relative_uri;
+}
+
+/**
+ * e_source_get_color:
+ * @source: An ESource
+ * @color_return: Pointer to a variable where the returned color will be
+ * stored.
+ * 
+ * If @source has an associated color, return it in *@color_return.
+ * 
+ * Return value: %TRUE if the @source has a defined color (and hence
+ * *@color_return was set), %FALSE otherwise.
+ **/
+gboolean
+e_source_get_color (ESource *source,
+		    guint32 *color_return)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), FALSE);
+
+	if (! source->priv->has_color)
+		return FALSE;
+
+	if (color_return != NULL)
+		*color_return = source->priv->color;
+
+	return TRUE;
+}
+
+
+char *
+e_source_get_uri (ESource *source)
+{
+	g_return_val_if_fail (E_IS_SOURCE (source), NULL);
+
+	if (source->priv->group == NULL)
+		return NULL;
+
+	return g_build_filename (e_source_group_peek_base_uri (source->priv->group),
+				 source->priv->relative_uri,
+				 NULL);
+}
+
+
+void
+e_source_dump_to_xml_node (ESource *source,
+			   xmlNodePtr parent_node)
+{
+	gboolean has_color;
+	guint32 color;
+	xmlNodePtr node = xmlNewChild (parent_node, NULL, "source", NULL);
+
+	g_return_if_fail (E_IS_SOURCE (source));
+
+
+	xmlSetProp (node, "uid", e_source_peek_uid (source));
+	xmlSetProp (node, "name", e_source_peek_name (source));
+	xmlSetProp (node, "relative_uri", e_source_peek_relative_uri (source));
+
+	has_color = e_source_get_color (source, &color);
+	if (has_color) {
+		char *color_string = g_strdup_printf (COLOR_FORMAT_STRING, color);
+		xmlSetProp (node, "color", color_string);
+		g_free (color_string);
+	}
+}
+
+
+E_MAKE_TYPE (e_source, "ESource", ESource, class_init, init, PARENT_TYPE)