From 0604b753108a15bcb508aa54358b1cadbbccf7e8 Mon Sep 17 00:00:00 2001
From: DanyaPostfactum <danya.postfactum@gmail.com>
Date: Sat, 20 Oct 2012 19:21:32 +1100
Subject: [PATCH] change selection instead of text.value

---
 lib/ace/keyboard/textinput.js | 81 +++++++++++++++++++++++++----------
 1 file changed, 58 insertions(+), 23 deletions(-)

diff --git a/lib/ace/keyboard/textinput.js b/lib/ace/keyboard/textinput.js
index 876872f0..7889a09a 100644
--- a/lib/ace/keyboard/textinput.js
+++ b/lib/ace/keyboard/textinput.js
@@ -53,22 +53,54 @@ var TextInput = function(parentNode, host) {
     text.style.top = "-2em";
     parentNode.insertBefore(text, parentNode.firstChild);
 
-    var PLACEHOLDER = useragent.isIE ? "\x01" : "\x00";
+    var PLACEHOLDER = useragent.isIE || useragent.isOpera ? "\x01" : "\x00";
+
+    resetValue();
+
     if (isFocused())
         host.onFocus();
 
+    // Somehow fixes problem with firing onpropertychange on first typed char
+    if (useragent.isOldIE) {
+        resetSelection();
+        resetValue();
+        setTimeout(resetSelection);
+    }
+
     var pasted = false;
+
     var inCompostion = false;
+
     var isSelectionEmpty = true;
+
     var tempStyle = '';
 
-    host.addEventListener('changeSelection', function(){
-        if (host.selection.isEmpty() != isSelectionEmpty) {
-            isSelectionEmpty = !isSelectionEmpty;
-            text.value = isSelectionEmpty ? '' : PLACEHOLDER;
-            text.select();
+    function resetValue() {
+        //http://code.google.com/p/chromium/issues/detail?id=76516
+        if (!useragent.isWebKit)
+            text.value = PLACEHOLDER;
+        else
+            setTimeout(function(){
+                text.value = PLACEHOLDER;
+            });
+    };
+
+    function resetSelection() {
+        var selectionStart = isSelectionEmpty ? 1 : 0;
+        var selectionEnd = 1;
+
+        if (text.setSelectionRange) {
+            text.setSelectionRange(selectionStart, selectionEnd);
         }
-    });
+        // IE8 does not support setSelectionRange
+        else if (text.createTextRange) {
+            var range = text.createTextRange();
+            range.collapse(true);
+            range.moveEnd('character', selectionEnd);
+            range.moveStart('character', selectionStart);
+            range.select();
+        }
+    };
 
     var onInput = function(e) {
         if (inCompostion)
@@ -76,24 +108,19 @@ var TextInput = function(parentNode, host) {
 
         if (pasted) {
             var data = text.value;
+            resetValue();
             if (data)
                 host.onPaste(data);
             pasted = false;
-        } else {
-            var data = text.value;
-            if (data)
-                host.onTextInput(data);
-            else
-                host.onDelete();
+            return;
         }
-        text.value = "";
 
-        //http://code.google.com/p/chromium/issues/detail?id=76516
-        if (useragent.isWebKit)
-            setTimeout(function(){
-                text.blur();
-                text.focus();
-            });
+        var data = text.value.substring(isSelectionEmpty ? 1 : 0);
+        resetValue();
+        if (data)
+            host.onTextInput(data);
+        else
+            host.onDelete();
     };
 
     var onCompositionStart = function(e) {
@@ -173,6 +200,7 @@ var TextInput = function(parentNode, host) {
             event.preventDefault(e);
         }
         else {
+            text.value = "";
             pasted = true;
         }
     };
@@ -238,11 +266,10 @@ var TextInput = function(parentNode, host) {
 
     event.addListener(text, "focus", function() {
         host.onFocus();
-        text.select();
+        resetSelection();
     });
 
     this.focus = function() {
-        text.select();
         text.focus();
     };
 
@@ -300,8 +327,16 @@ var TextInput = function(parentNode, host) {
     if (!useragent.isGecko)
         event.addListener(text, "contextmenu", function(e) {
             host.textInput.onContextMenu(e);
-            onContextMenuClose()
+            onContextMenuClose();
         });
+
+
+    host.addEventListener('changeSelection', function(){
+        if (host.selection.isEmpty() != isSelectionEmpty) {
+            isSelectionEmpty = !isSelectionEmpty;
+            resetSelection();
+        }
+    });
 };
 
 exports.TextInput = TextInput;