Dispatching event within errorHandler function while executing upload asset via asset tree (#887)

* chore(events): added new event to handle add asset error while adding asset via asset tree

* chore(asset/tree.js): added custom event and dispatch the event within error handler, omit the default action using showNotification

---------

Co-authored-by: Patrick Bitzer <[email protected]>

Author: BlackbitDevs

public/js/pimcore/asset/tree.js

@@ -263,10 +263,22 @@
                      pimcore.elementservice.refreshNodeAllTrees("asset", parentNode.get("id"));
                  }
              }.bind(this);
- 
+
              var errorHandler = function (e) {
-                 var res = Ext.decode(e["responseText"]);
-                 pimcore.helpers.showNotification(t("error"), res.message ? res.message : t("error"), "error", e["responseText"]);
+                 const res = Ext.decode(e["responseText"]);
+                 const addAssetError = new CustomEvent(pimcore.events.assetTreeAddAssetError, {
+                     detail: res,
+                     cancelable: true
+                 });
+
+                 /*
+                     The default return value of dispatchEvent is true, but if you add event.preventDefault() in the listener,
+                     it will return false and the default action will not be triggered.
+                  */
+                 const addAssetErrorCancelled = document.dispatchEvent(addAssetError);
+                 if (addAssetErrorCancelled) {
+                     pimcore.helpers.showNotification(t("error"), res.message ? res.message : t("error"), "error", e["responseText"]);
+                 }
                  finishedErrorHandler();
              }.bind(this);
 

public/js/pimcore/events.js

@@ -159,6 +159,12 @@
   * url returning the metadata definitions is passed as parameter
   */
  pimcore.events.prepareAssetMetadataGridConfigurator = "pimcore.gridConfigurator.assetMetadata.prepare";
+
+ /**
+  * upload via asset tree and handle the error
+  * response is passed as parameter
+  */
+ pimcore.events.assetTreeAddAssetError = "pimcore.events.assetTree.addAssetError";
 
  /**
   * before context menu is opened