tab should not change node from last edit; now can tab when sentence is empty

2 files changed, 14 insertions, 4 deletions

diff --git a/src/textanalysis.js b/src/textanalysis.js
index 416106fc..44765916 100644
--- a/src/textanalysis.js
+++ b/src/textanalysis.js
@@ -217,6 +217,10 @@ var textAnalyser = function (newtext, finalize) {
         ret.link_set_add.push(link);
     }
 
+    if (newtext.indexOf('#') == -1 || finalize) {
+        lastnode = null;
+    }
+
     //Sentence Sequencing
     //Build the words and cuts the main elements
     sentence = tokenize(newtext, '#', '"');
@@ -435,7 +439,11 @@ var textAnalyser = function (newtext, finalize) {
                 if (true == finalize && node.state == 'temp') {
                     console.log('bug: temp node creation on finalize');
                 } else {
-                    lastnode = graph.addNode(node);
+                    if (!finalize) {
+                        lastnode = graph.addNode(node);
+                    } else {
+                        graph.addNode(node);
+                    }
                 }
             });
 
diff --git a/src/textanalysis.ui.js b/src/textanalysis.ui.js
index 277d847e..d21a389c 100644
--- a/src/textanalysis.ui.js
+++ b/src/textanalysis.ui.js
@@ -124,9 +124,11 @@ return {
 
             switch (e.keyCode) {
             case 9: //TAB
-                e.preventDefault();
-                changeType(e.shiftKey ? "up" : "down", textanalysis.lastnode());
-                ret = false;
+                if (textanalysis.lastnode()) {
+                    e.preventDefault();
+                    changeType(e.shiftKey ? "up" : "down", textanalysis.lastnode());
+                    ret = false;
+                }
                 break;
             case 37: //UP
                 $('html, body').scrollLeft(0);