Fix file input on Opera not being reset in QR.resetFileInput.

4chan_x.user.js

@@ -1630,7 +1630,27 @@
       return QR.resetFileInput();
     },
     resetFileInput: function() {
-      return $('[type=file]', QR.el).value = null;
+      var clone, input;
+      input = $('[type=file]', QR.el);
+      input.value = null;
+      if ($.engine !== 'presto') {
+        return;
+      }
+      clone = $.el('input', {
+        type: 'file',
+        accept: input.accept,
+        max: input.max,
+        multiple: input.multiple,
+        size: input.size,
+        title: input.title
+      });
+      $.on(clone, 'change', QR.fileInput);
+      $.on(clone, 'click', function(e) {
+        if (e.shiftKey) {
+          return QR.selected.rmFile() || e.preventDefault();
+        }
+      });
+      return $.replace(input, clone);
     },
     replies: [],
     reply: (function() {

script.coffee

@@ -1207,7 +1207,20 @@ QR =
     $.addClass QR.el, 'dump'
     QR.resetFileInput() # reset input
   resetFileInput: ->
-    $('[type=file]', QR.el).value = null
+    input = $ '[type=file]', QR.el
+    input.value = null
+    return unless $.engine is 'presto'
+    # XXX Opera needs extra care to reset its file input's value
+    clone = $.el 'input',
+      type: 'file'
+      accept:   input.accept
+      max:      input.max
+      multiple: input.multiple
+      size:     input.size
+      title:    input.title
+    $.on clone, 'change', QR.fileInput
+    $.on clone, 'click',  (e) -> if e.shiftKey then QR.selected.rmFile() or e.preventDefault()
+    $.replace input, clone
 
   replies: []
   reply: class