From 04f06ebefefd0137d41eb5eaa249be3bc701088e Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Thu, 21 Feb 2013 10:23:57 +0400
Subject: [PATCH] use config defineOptions

---
 demo/kitchen-sink/demo.js        |  3 +--
 lib/ace/elastic_tabstops_lite.js | 41 +++++++++++++++++++++++++++++++-
 2 files changed, 41 insertions(+), 3 deletions(-)

diff --git a/demo/kitchen-sink/demo.js b/demo/kitchen-sink/demo.js
index 80b25b06..4836a78e 100644
--- a/demo/kitchen-sink/demo.js
+++ b/demo/kitchen-sink/demo.js
@@ -381,8 +381,7 @@ bindDropdown("split", function(value) {
 
 
 bindCheckbox("elastic_tabstops", function(checked) {
-    if (checked === true)
-        new ElasticTabstopsLite(env.editor);
+    env.editor.setOption("useElasticTabstops", checked);
 });
 
 
diff --git a/lib/ace/elastic_tabstops_lite.js b/lib/ace/elastic_tabstops_lite.js
index 5eb9dcf6..efbe7882 100644
--- a/lib/ace/elastic_tabstops_lite.js
+++ b/lib/ace/elastic_tabstops_lite.js
@@ -33,10 +33,30 @@ define(function(require, exports, module) {
 
 var ElasticTabstopsLite = function(editor) {
     this.$editor = editor;
+    var self = this;
+    var changedRows = [];
+    var recordChanges = false;
+    this.onAfterExec = function() {
+        recordChanges = false;
+        self.processRows(changedRows);
+        changedRows = [];
+    };
+    this.onExec = function() {
+        recordChanges = true;
+    };
+    this.onChange = function(e) {
+        var range = e.data.range
+        if (recordChanges) {
+            if (changedRows.indexOf(range.start.row) == -1)
+                changedRows.push(range.start.row);
+            if (range.end.row != range.start.row)
+                changedRows.push(range.end.row);
+        }
+    };
 };
 
 (function() {
-    this.processRow = function(rows) {
+    this.processRows = function(rows) {
         this.$inChange = true;
         var checkedRows = [];
 
@@ -272,4 +292,23 @@ var ElasticTabstopsLite = function(editor) {
 
 exports.ElasticTabstopsLite = ElasticTabstopsLite;
 
+var Editor = require("./editor").Editor;
+require("./config").defineOptions(Editor.prototype, "editor", {
+    useElasticTabstops: {
+        set: function(val) {
+            if (val) {
+                if (!this.elasticTabstops)
+                    this.elasticTabstops = new ElasticTabstopsLite(this);
+                this.commands.on("afterExec", this.elasticTabstops.onAfterExec);
+                this.commands.on("exec", this.elasticTabstops.onExec);
+                this.on("change", this.elasticTabstops.onChange);
+            } else if (this.elasticTabstops) {
+                this.commands.removeListener("afterExec", this.elasticTabstops.onAfterExec);
+                this.commands.removeListener("exec", this.elasticTabstops.onExec);
+                this.removeListener("change", this.elasticTabstops.onChange);
+            }
+        }
+    }
+});
+
 });
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