#ifndef SAVEEVENTVISITOR_H_
#define SAVEEVENTVISITOR_H_

#include "ieventmanager.h"

#include <gdk/gdkkeysyms.h>

#include "xmlutil/Node.h"

#include "Accelerator.h"

/* greebo: The visitor class that saves each visited event to the XMLRegistry
 *
 * The key the events are saved under is passed to the constructor of this class,
 * for example: user/ui/input is passed.
 *
 * The resulting shortcut nodes are like: user/ui/input/shortcuts/shortcut
 */
class SaveEventVisitor :
	public IEventVisitor
{
	const std::string _rootKey;

	// The node containing all the <shortcut> tags
	xml::Node _shortcutsNode;

	IEventManager* _eventManager;

public:
	SaveEventVisitor(const std::string& rootKey, IEventManager* eventManager) :
		_rootKey(rootKey),
		_shortcutsNode(NULL),
		_eventManager(eventManager)
	{
		// Remove any existing shortcut definitions
		GlobalRegistry().deleteXPath(_rootKey + "//shortcuts");

		_shortcutsNode = GlobalRegistry().createKey(_rootKey + "/shortcuts");
	}

	~SaveEventVisitor() {
	}

	void visit(const std::string& eventName, const IEvent* event) {
		// Only export events with non-empty name
		if (!eventName.empty()) {
			// Try to find an accelerator connected to this event
			Accelerator* accelerator = dynamic_cast<Accelerator*>(_eventManager->findAccelerator(event));

			if (accelerator != NULL) {
				unsigned int keyVal = accelerator->getKey();

				const std::string keyStr = (keyVal != 0) ? gdk_keyval_name(keyVal) : "";
				const std::string modifierStr = _eventManager->getModifierStr(accelerator->getModifiers());

				// Create a new child under the _shortcutsNode
				xml::Node createdNode = _shortcutsNode.createChild("shortcut");

				// Convert it into an xml::Node and set the attributes
				createdNode.setAttributeValue("command", eventName);
				createdNode.setAttributeValue("key", keyStr);
				createdNode.setAttributeValue("modifiers", modifierStr);

				// Add some whitespace to the node (nicer output formatting)
				createdNode.addText("\n\t");
			}
		}
	}

}; // class SaveEvent

#endif /*SAVEEVENTVISITOR_H_*/
