Merge pull request #520 from HobieCat/ExtPersist-beforeRestore

ExtPersist beforeRestore event

Author: mar10

src/jquery.fancytree.persist.js

@@ -235,6 +235,10 @@ $.ui.fancytree.registerExtension({
 
 		// Bind init-handler to apply cookie state
 		tree.$div.bind("fancytreeinit", function(event){
+			if ( !tree._triggerTreeEvent("beforeRestore", null, {}) ) {
+				return;
+			}
+
 			var cookie, dfd, i, keyList, node,
 				prevFocus = local._data(local.cookiePrefix + FOCUS), // record this before node.setActive() overrides it;
 				noEvents = instOpts.fireActivate === false;