add a way for disabling AutoScrollEditorIntoView

demo/scrollable-page.html

@@ -88,6 +88,7 @@ require("ace/commands/default_commands").commands.push({
 	exec: function(editor) {
 		dom.toggleCssClass(document.body, "fullScreen")
 		dom.toggleCssClass(editor.container, "fullScreen")
+        editor.setAutoScrollEditorIntoView()
 		editor.resize()
 	}
 })

lib/ace/editor.js

@@ -2110,29 +2110,37 @@ var Editor = function(renderer, session) {
         this.renderer.destroy();
     };
     
-    this.setAutoScrollEditorIntoView = function() {
+    /** 
-        var self = this;
+     * Enables automatic scrolling of the cursor into view when editor itself is inside scrollable element
+     * @param {Boolean} enable default true
+     **/
+    this.setAutoScrollEditorIntoView = function(enable) {
+        if (enable === true)
+            return;
         var rect;
+        var self = this;
         var shouldScroll = false;
-        var scrollAnchor = dom.createElement("div");
+        if (!this.$scrollAnchor)
+            this.$scrollAnchor = document.createElement("div");
+        var scrollAnchor = this.$scrollAnchor;
         scrollAnchor.style.cssText = "position:absolute";
         this.container.insertBefore(scrollAnchor, this.container.firstChild);
-        this.on("changeSelection", function() {
+        var onChangeSelection = this.on("changeSelection", function() {
             shouldScroll = true;
         });
         // needed to not trigger sync reflow
-        this.renderer.on("beforeRender", function() {
+        var onBeforeRender = this.renderer.on("beforeRender", function() {
             if (shouldScroll)
-                rect = self.renderer.container.getBoundingClientRect()
+                rect = self.renderer.container.getBoundingClientRect();
         });
-        this.renderer.on("afterRender", function() {
+        var onAfterRender = this.renderer.on("afterRender", function() {
             if (shouldScroll && rect && self.isFocused()) {
                 var renderer = self.renderer;
                 var pos = renderer.$cursorLayer.$pixelPos;
                 var config = renderer.layerConfig;
                 var top = pos.top - config.offset;
                 if (pos.top >= 0 && top + rect.top < 0) {
-                    shouldScroll = true
+                    shouldScroll = true;
                 } else if (pos.top < config.height &&
                     pos.top + rect.top + config.lineHeight > window.innerHeight) {
                     shouldScroll = false;
@@ -2144,11 +2152,18 @@ var Editor = function(renderer, session) {
                     scrollAnchor.style.left = pos.left + "px";
                     scrollAnchor.style.height = config.lineHeight + "px";
                     scrollAnchor.scrollIntoView(shouldScroll);
-                    
                 }
                 shouldScroll = rect = null;
             }
         });
+        this.setAutoScrollEditorIntoView = function(enable) {
+            if (enable === false)
+                return;
+            delete this.setAutoScrollEditorIntoView;
+            this.removeEventListener("changeSelection", onChangeSelection);
+            this.renderer.removeEventListener("afterRender", onAfterRender);
+            this.renderer.removeEventListener("beforeRender", onBeforeRender);
+        };
     };
 
 }).call(Editor.prototype);

lib/ace/lib/event_emitter.js

@@ -106,6 +106,7 @@ EventEmitter.addEventListener = function(eventName, callback, capturing) {
 
     if (listeners.indexOf(callback) == -1)
         listeners[capturing ? "unshift" : "push"](callback);
+    return callback;
 };
 
 EventEmitter.removeListener =