fix html5 clipboard on ie

plugins/c9.ide.clipboard/html5.js

@@ -52,20 +52,18 @@ define(function(require, exports, module) {
             if (notSupported(type))
                 return;
             
-            type = convertType(type);
-            
             if (nativeObject) {
-                nativeObject.setData(type, data);
+                handleClipboardData(nativeObject, type, data);
                 return true;
             }
             
             var setData = function(e) {
                 if (list) {
                     list.forEach(function(type) {
-                        e.clipboardData.setData(type, data);
+                        handleClipboardData(e.clipboardData, type, data);
                     });
                 }
-                e.clipboardData.setData(type, data);
+                handleClipboardData(e.clipboardData, type, data);
                 
                 e.preventDefault();
                 e.stopPropagation();
@@ -83,16 +81,14 @@ define(function(require, exports, module) {
             if (notSupported(type))
                 return;
             
-            type = convertType(type);
-            
             if (!full && nativeObject)
-                return nativeObject.getData(type);
+                return handleClipboardData(nativeObject, type);
             
             var data;
             var getData = function(e) {
                 data = full
                     ? e.clipboardData
-                    : e.clipboardData.getData(type);
+                    : handleClipboardData(nativeObject, type);
                 e.preventDefault();
                 e.stopPropagation();
             };
@@ -120,8 +116,22 @@ define(function(require, exports, module) {
             return !/text($|\/)/.test(type);
         }
         
-        function convertType(type) {
-            return document.all ? "Text" : type;
+        function handleClipboardData(clipboardData, type, data, forceIEMime) {
+            if (!clipboardData)
+                return;
+            // using "Text" doesn't work on old webkit but ie needs it
+            var mime = forceIEMime ? "Text" : type;
+            try {
+                if (data) {
+                    // Safari 5 has clipboardData object, but does not handle setData()
+                    return clipboardData.setData(mime, data) !== false;
+                } else {
+                    return clipboardData.getData(mime);
+                }
+            } catch(e) {
+                if (!forceIEMime)
+                    return handleClipboardData(clipboardData, type, data, true);
+            }
         }
         
         function wrap(obj) {