Task 483. Add charts export feature as a PNG image

httpsdocs/classes/CB/Browser.php

@@ -393,7 +393,7 @@ public function getObjectsForField($p)
                 if (!empty($fieldConfig['source']['fn'])) {
                     $method = explode('.', $fieldConfig['source']['fn']);
                     $class = new $method[0]();
-                    $rez = $class->$method[1]($p);
+                    $rez = $class->{$method[1]}($p);
 
                     // if custom source returned any result then return it right there
                     // otherwise custom source can add some filtering params and we go further processing
@@ -610,7 +610,7 @@ public function getObjectsForField($p)
 
         $search = new Search();
 
-        
+
         if (!isset($p['skipSecurity'])) {
             // temporary: Don't use permissions for Objects fields
             // it can be later reinforced per field in config

httpsdocs/js/widget/block/Chart.js

@@ -22,11 +22,22 @@ Ext.define('CB.widget.block.Chart', {
                 type: 'vbox'
                 ,pack: 'top'
             }
-
             ,listeners: {
                 scope: this
                 ,afterrender: this.onAfterRender
             }
+            ,dockedItems: [{
+                xtype: 'toolbar',
+                items: [{
+                    xtype: 'button',
+                    text: 'Download Chart as PNG Image',
+                    handler: function(btn, e, eOpts) {
+                        btn.up('CBWidgetBlockChart').down("chart").save({
+                            type: "image/png"
+                        })
+                    }
+                }]
+            }]
         });
 
         this.callParent(arguments);