drag n drop event gtm

src/botPage/view/blockly/customBlockly.js

@@ -405,6 +405,40 @@ Blockly.Constants.Loops.CUSTOM_CONTEXT_MENU_CREATE_VARIABLES_GET_MIXIN.customCon
 };
 
 /**
+ * Update this gesture to record whether a block is being dragged from the
+ * flyout.
+ * This function should be called on a mouse/touch move event the first time the
+ * drag radius is exceeded.  It should be called no more than once per gesture.
+ * If a block should be dragged from the flyout this function creates the new
+ * block on the main workspace and updates targetBlock_ and startWorkspace_.
+ * @return {boolean} True if a block is being dragged from the flyout.
+ * @private
+ */
+Blockly.Gesture.prototype.updateIsDraggingFromFlyout_ = function() {
+    // Disabled blocks may not be dragged from the flyout.
+    if (this.targetBlock_.disabled) {
+        return false;
+    }
+
+    if (!this.flyout_.isScrollable() || this.flyout_.isDragTowardWorkspace(this.currentDragDeltaXY_)) {
+        GTM.pushDataLayer({ event: 'Block Event', blockEvent: 'Drag n Drop' });
+        this.startWorkspace_ = this.flyout_.targetWorkspace_;
+        this.startWorkspace_.updateScreenCalculationsIfScrolled();
+        // Start the event group now, so that the same event group is used for block
+        // creation and block dragging.
+        if (!Blockly.Events.getGroup()) {
+            Blockly.Events.setGroup(true);
+        }
+        // The start block is no longer relevant, because this is a drag.
+        this.startBlock_ = null;
+        this.targetBlock_ = this.flyout_.createBlock(this.targetBlock_);
+        this.targetBlock_.select();
+        return true;
+    }
+    return false;
+};
+
+/*
  * Return the parent block or null if this block is at the top level.
  * @return {Blockly.Block} The block that holds the current block.
  */