粘贴发送修改

@@ -43,6 +43,7 @@ function Paste(sl, cb) {
     this.uploadCb = cb;
     this.isSending = false;
     this.bindEvents();
+    this.input = '';
 }
 
 Paste.prototype = {
@@ -50,6 +51,7 @@ Paste.prototype = {
         var self = this;
 
         this.$el.addEventListener('paste', function(e) {
+            self.input = $('.text.msg-area').val();
             var cbd = e.clipboardData;
             var ua = window.navigator.userAgent;
 
@@ -133,6 +135,7 @@ Paste.prototype = {
                         var image = new Image();
                         image.src = base64;
                         image.onload = function() {
+                            $('.text.msg-area').val(self.input);
                             _drawPreview(base64);
                             self.open();
                         };