moving trunk for module inkscape

(bzr r1)

1 files changed, 119 insertions, 0 deletions

diff --git a/src/jabber_whiteboard/node-tracker-observer.h b/src/jabber_whiteboard/node-tracker-observer.h
new file mode 100644
index 000000000..600500c70
--- /dev/null
+++ b/src/jabber_whiteboard/node-tracker-observer.h
@@ -0,0 +1,119 @@
+/**
+ * Convenience base class for XML::NodeObservers that need to extract data
+ * from an XMLNodeTracker and queue up added or removed nodes for later
+ * processing
+ *
+ * Authors:
+ * David Yip <yipdw@rose-hulman.edu>
+ *
+ * Copyright (c) 2005 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifndef __WHITEBOARD_NODE_TRACKER_OBSERVER_H__
+#define __WHITEBOARD_NODE_TRACKER_OBSERVER_H__
+
+#include "xml/node-observer.h"
+
+#include "jabber_whiteboard/node-tracker-event-tracker.h"
+#include "jabber_whiteboard/node-tracker.h"
+#include "jabber_whiteboard/typedefs.h"
+
+namespace Inkscape {
+
+namespace XML {
+
+class Node;
+
+}
+
+namespace Whiteboard {
+
+class NodeTrackerObserver : public XML::NodeObserver {
+public:
+	NodeTrackerObserver(XMLNodeTracker* xnt) : _xnt(xnt) { }
+	virtual ~NodeTrackerObserver() { }
+
+	// just reinforce the fact that we don't implement any of the 
+	// notification methods here
+    virtual void notifyChildAdded(XML::Node &node, XML::Node &child, XML::Node *prev)=0;
+
+    virtual void notifyChildRemoved(XML::Node &node, XML::Node &child, XML::Node *prev)=0;
+
+    virtual void notifyChildOrderChanged(XML::Node &node, XML::Node &child,
+                                         XML::Node *old_prev, XML::Node *new_prev)=0;
+
+    virtual void notifyContentChanged(XML::Node &node,
+                                      Util::SharedCStringPtr old_content,
+                                      Util::SharedCStringPtr new_content)=0;
+
+    virtual void notifyAttributeChanged(XML::Node &node, GQuark name,
+                                        Util::SharedCStringPtr old_value,
+                                        Util::SharedCStringPtr new_value)=0;
+
+
+	// ...but we do provide node tracking facilities
+	KeyToNodeActionList& getNodeTrackerActions()
+	{
+		return this->newnodes;
+	}
+
+	KeyToNodeActionList getNodeTrackerActionsCopy()
+	{
+		return this->newnodes;
+	}
+
+	void clearNodeBuffers()
+	{
+		this->newnodes.clear();
+		this->newkeys.clear();
+		this->actions.clear();
+	}
+
+protected:
+	std::string _findOrGenerateNodeID(XML::Node& node)
+	{
+		NodeToKeyMap::iterator i = newkeys.find(&node);
+		if (i != newkeys.end()) {
+//			g_log(NULL, G_LOG_LEVEL_DEBUG, "Found key for %p (local): %s", &node, i->second.c_str());
+			return i->second;
+		} else {
+			std::string nodeid = this->_xnt->get(node);
+			if (nodeid.empty()) {
+//				g_log(NULL, G_LOG_LEVEL_DEBUG, "Generating key for %p", &node);
+				return this->_xnt->generateKey();
+			} else {
+//				g_log(NULL, G_LOG_LEVEL_DEBUG, "Found key for %p (tracker): %s", &node, nodeid.c_str());
+				return nodeid;
+			}
+		}
+	}
+
+	KeyToNodeActionList newnodes;
+	NodeTrackerEventTracker actions;
+	NodeToKeyMap newkeys;
+	XMLNodeTracker* _xnt;
+
+private:
+	// noncopyable, nonassignable
+	NodeTrackerObserver(NodeTrackerObserver const& other);
+	NodeTrackerObserver& operator=(NodeTrackerObserver const& other);
+
+};
+
+}
+
+}
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :