add annotation event from annotation panel

static/js/annotationPanel.js

@@ -10,6 +10,10 @@ oml.ui.annotationPanel = function() {
         title: 'add',
         tooltip: Ox._('Add Quote'),
         type: 'image'
+    }).bindEvent({
+        click: function() {
+            oml.$ui.viewer.postMessage('addAnnotation', {})
+        }
     }).appendTo($bar);
 
     var $menuButton = Ox.MenuButton({
@@ -50,6 +54,12 @@ oml.ui.annotationPanel = function() {
         orientation: 'vertical'
     });
 
+    that.updateSelection = function(selection) {
+        $button.options({
+            disabled: !selection
+        })
+    }
+
     return that;
 
 };

static/js/viewer.js

@@ -110,6 +110,8 @@ oml.ui.viewer = function() {
                         } else if (event == 'deselectAnnotation') {
                             var $annotation = oml.$ui.annotationFolder.find('#a-' + data.id)[0]
                             $annotation && $annotation.deselect()
+                        } else if (event == 'selection') {
+                            oml.$ui.annotationPanel.updateSelection(data)
                         } else {
                             console.log('got', event, data)
                             that.triggerEvent(event, data);