From 56c97c992c544111b69684133076f49b978d10c6 Mon Sep 17 00:00:00 2001
From: Fabian Jakobs <fabian.jakobs@web.de>
Date: Tue, 25 Jan 2011 21:37:19 +0100
Subject: [PATCH] move hidden text area over the cursor

---
 lib/ace/keyboard/textinput.js | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/lib/ace/keyboard/textinput.js b/lib/ace/keyboard/textinput.js
index 08812a0a..459f9e0e 100644
--- a/lib/ace/keyboard/textinput.js
+++ b/lib/ace/keyboard/textinput.js
@@ -43,11 +43,34 @@ var TextInput = function(parentNode, host) {
 
     var text = document.createElement("textarea");
     var style = text.style;
-    style.position = "absolute";
+    style.position = "fixed";
     style.left = "-10000px";
     style.top = "-10000px";
     parentNode.appendChild(text);
 
+    // move text input over the cursor
+    // this is required for iOS and IME
+    style.left = "0px";
+    style.top = "0px";
+    style.zIndex = -1;
+    style.opacity = 0;
+    style.width = "10px";
+    style.height = "30px";
+    
+    var changeCursor = function() {
+        var cursor = host.getCursorPosition();
+        var pos = host.renderer.textToScreenCoordinates(cursor.row, cursor.column);
+        var epos = parentNode.getBoundingClientRect();
+        style.left = (pos.pageX - epos.left - 6) + "px";
+        style.top = (pos.pageY - epos.top + 52) + "px";
+    };
+    
+    host.addEventListener("changeSession", function(e) {
+        if (e.oldSession)
+            e.oldSession.getSelection().removeEventListener("changeCursor", changeCursor);
+        e.session.getSelection().addEventListener("changeCursor", changeCursor);
+    });
+
     var PLACEHOLDER = String.fromCharCode(0);
     sendText();