Fix exclusive rendering canceling

On editorInteraction exclusive rendering should be canceled unconditionally.

Fixes #163

src/ui/react/src/components/base/widget-exclusive.js

@@ -24,12 +24,19 @@
         },
 
         /**
-         * Lifecycle. Invoked once before the component is mounted.
+         * Lifecycle. Invoked when a component is receiving new props.
+         * This method is not called for the initial render.
+         * Calling this.setState() within this function will not trigger an additional render.
+         *
+         * @param {Object} nextProps Object containing the current set of properties.
          */
-        getInitialState: function() {
-            return {
+        componentWillReceiveProps: function(nextProps) {
+            // Receiving properties means that the component is being re-rendered.
+            // Re-rendering is triggered by editorInteraction, so we have to
+            // reset the exclusive state and render the UI according to the new selection.
+            this.setState({
                 itemExclusive: null
-            };
+            });
         },
 
         /**

src/ui/react/src/components/main.jsx

@@ -9,6 +9,15 @@
     var UI = React.createClass({
         mixins: [global.WidgetExclusive, global.WidgetFocusManager],
 
+        /**
+         * Lifecycle. Invoked once before the component is mounted.
+         */
+        getInitialState: function() {
+            return {
+                hidden: false
+            };
+        },
+
         /**
          * Lifecycle. Returns the default values of the properties used in the widget.
          *
@@ -117,6 +126,7 @@
             editor.focus();
 
             this.setState({
+                itemExclusive: null,
                 selectionData: editor.getSelectionData(),
                 trigger: event.data
             });