1 files changed, 287 insertions, 0 deletions
diff --git a/src/ld-document.c b/src/ld-document.c
index e69de29..64e1536 100644
--- a/src/ld-document.c
+++ b/src/ld-document.c
@@ -0,0 +1,287 @@
+/*
+ * ld-document.c
+ *
+ * This file is a part of logdiag.
+ * Copyright Přemysl Janouch 2010. All rights reserved.
+ *
+ * See the file LICENSE for licensing information.
+ *
+ */
+
+#include <gtk/gtk.h>
+
+#include "config.h"
+
+#include "ld-document-object.h"
+#include "ld-document.h"
+
+
+/**
+ * SECTION:ld-document
+ * @short_description: A document object.
+ * @see_also: #LdCanvas
+ *
+ * #LdDocument is a model for storing documents.
+ */
+
+/*
+ * LdDocumentPrivate:
+ * @objects: All the objects in the document.
+ * @selection: All currently selected objects.
+ * @connections: Connections between objects.
+ */
+struct _LdDocumentPrivate
+{
+	GSList *objects;
+	GSList *selection;
+	GSList *connections;
+};
+
+G_DEFINE_TYPE (LdDocument, ld_document, G_TYPE_OBJECT);
+
+static void
+ld_document_finalize (GObject *gobject);
+
+
+static void
+ld_document_class_init (LdDocumentClass *klass)
+{
+	GObjectClass *object_class;
+
+	object_class = G_OBJECT_CLASS (klass);
+	object_class->finalize = ld_document_finalize;
+
+/**
+ * LdDocument::changed:
+ * @document: The document object.
+ *
+ * Contents of the document have changed.
+ */
+	klass->changed_signal = g_signal_new
+		("changed", G_TYPE_FROM_CLASS (klass),
+		G_SIGNAL_RUN_LAST | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS,
+		0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+
+	g_type_class_add_private (klass, sizeof (LdDocumentPrivate));
+}
+
+static void
+ld_document_init (LdDocument *self)
+{
+	self->priv = G_TYPE_INSTANCE_GET_PRIVATE
+		(self, LD_TYPE_DOCUMENT, LdDocumentPrivate);
+}
+
+static void
+ld_document_finalize (GObject *gobject)
+{
+	LdDocument *self;
+
+	self = LD_DOCUMENT (gobject);
+	ld_document_clear (self);
+
+	/* Chain up to the parent class. */
+	G_OBJECT_CLASS (ld_document_parent_class)->finalize (gobject);
+}
+
+/**
+ * ld_document_new:
+ *
+ * Create an instance.
+ */
+LdDocument *
+ld_document_new (void)
+{
+	return g_object_new (LD_TYPE_DOCUMENT, NULL);
+}
+
+/**
+ * ld_document_clear:
+ * @self: An #LdDocument object.
+ *
+ * Clear the whole document with it's objects and selection.
+ */
+void
+ld_document_clear (LdDocument *self)
+{
+	g_return_if_fail (LD_IS_DOCUMENT (self));
+
+	g_slist_free (self->priv->connections);
+	self->priv->connections = NULL;
+
+	g_slist_foreach (self->priv->selection, (GFunc) g_object_unref, NULL);
+	g_slist_free (self->priv->selection);
+	self->priv->selection = NULL;
+
+	g_slist_foreach (self->priv->objects, (GFunc) g_object_unref, NULL);
+	g_slist_free (self->priv->objects);
+	self->priv->objects = NULL;
+
+	g_signal_emit (self,
+		LD_DOCUMENT_GET_CLASS (self)->changed_signal, 0);
+}
+
+/**
+ * ld_document_load_from_file:
+ * @self: An #LdDocument object.
+ * @filename: A filename.
+ * @error: Return location for a GError, or NULL.
+ *
+ * Load a file into the document.
+ *
+ * Return value: TRUE if the file could be loaded, FALSE otherwise.
+ */
+gboolean
+ld_document_load_from_file (LdDocument *self,
+	const gchar *filename, GError *error)
+{
+	g_return_val_if_fail (LD_IS_DOCUMENT (self), FALSE);
+
+	/* TODO */
+	return FALSE;
+}
+
+/**
+ * ld_document_save_to_file:
+ * @self: An #LdDocument object.
+ * @filename: A filename.
+ * @error: Return location for a GError, or NULL.
+ *
+ * Save the document into a file.
+ *
+ * Return value: TRUE if the document could be saved, FALSE otherwise.
+ */
+gboolean
+ld_document_save_to_file (LdDocument *self,
+	const gchar *filename, GError *error)
+{
+	g_return_val_if_fail (LD_IS_DOCUMENT (self), FALSE);
+
+	/* TODO */
+	return FALSE;
+}
+
+/**
+ * ld_document_get_objects:
+ * @self: An #LdDocument object.
+ *
+ * Get a list of objects in the document.
+ * You mustn't make any changes to the list.
+ */
+GSList *
+ld_document_get_objects (LdDocument *self)
+{
+	g_return_val_if_fail (LD_IS_DOCUMENT (self), NULL);
+	return self->priv->objects;
+}
+
+/**
+ * ld_document_insert_object:
+ * @self: An #LdDocument object.
+ * @object: The object to be inserted.
+ * @pos: The position at which the object is to be inserted.
+ *       Negative values will append to the end.
+ *
+ * Insert an object into the document.
+ */
+void
+ld_document_insert_object (LdDocument *self, LdDocumentObject *object, gint pos)
+{
+	g_return_if_fail (LD_IS_DOCUMENT (self));
+	g_return_if_fail (LD_IS_DOCUMENT_OBJECT (object));
+
+	if (!g_slist_find (self->priv->objects, object))
+	{
+		self->priv->objects =
+			g_slist_insert (self->priv->objects, object, pos);
+		g_object_ref (object);
+	}
+	g_signal_emit (self,
+		LD_DOCUMENT_GET_CLASS (self)->changed_signal, 0);
+}
+
+/**
+ * ld_document_remove_object:
+ * @self: An #LdDocument object.
+ * @object: The object to be removed.
+ *
+ * Remove an object from the document.
+ */
+void
+ld_document_remove_object (LdDocument *self, LdDocumentObject *object)
+{
+	g_return_if_fail (LD_IS_DOCUMENT (self));
+	g_return_if_fail (LD_IS_DOCUMENT_OBJECT (object));
+
+	if (g_slist_find (self->priv->objects, object))
+	{
+		ld_document_selection_remove (self, object);
+
+		self->priv->objects = g_slist_remove (self->priv->objects, object);
+		g_object_unref (object);
+	}
+	g_signal_emit (self,
+		LD_DOCUMENT_GET_CLASS (self)->changed_signal, 0);
+}
+
+/**
+ * ld_document_get_selection:
+ * @self: An #LdDocument object.
+ *
+ * Get a list of objects that are currently selected in the document.
+ * You mustn't make any changes to the list.
+ */
+GSList *
+ld_document_get_selection (LdDocument *self)
+{
+	g_return_val_if_fail (LD_IS_DOCUMENT (self), NULL);
+	return self->priv->selection;
+}
+
+/**
+ * ld_document_selection_add:
+ * @self: An #LdDocument object.
+ * @object: The object to be added to the selection.
+ * @pos: The position at which the object is to be inserted.
+ *       Negative values will append to the end.
+ *
+ * Add an object to selection.
+ */
+void
+ld_document_selection_add (LdDocument *self, LdDocumentObject *object, gint pos)
+{
+	g_return_if_fail (LD_IS_DOCUMENT (self));
+	g_return_if_fail (LD_IS_DOCUMENT_OBJECT (object));
+
+	if (!g_slist_find (self->priv->selection, object)
+		&& g_slist_find (self->priv->objects, object))
+	{
+		self->priv->selection =
+			g_slist_insert (self->priv->selection, object, pos);
+		g_object_ref (object);
+	}
+	g_signal_emit (self,
+		LD_DOCUMENT_GET_CLASS (self)->changed_signal, 0);
+}
+
+/**
+ * ld_document_selection_remove:
+ * @self: An #LdDocument object.
+ * @object: The object to be removed from the selection.
+ *
+ * Remove an object from the selection.
+ */
+void
+ld_document_selection_remove (LdDocument *self, LdDocumentObject *object)
+{
+	g_return_if_fail (LD_IS_DOCUMENT (self));
+	g_return_if_fail (LD_IS_DOCUMENT_OBJECT (object));
+
+	if (g_slist_find (self->priv->selection, object))
+	{
+		self->priv->selection = g_slist_remove (self->priv->selection, object);
+		g_object_unref (object);
+	}
+	g_signal_emit (self,
+		LD_DOCUMENT_GET_CLASS (self)->changed_signal, 0);
+}