Add notification if zip file contains no usable files (mime types)

See issue #45

packages/file-handling/src/file-source.js

@@ -4,6 +4,7 @@ import {ScopedElementsMixin} from '@open-wc/scoped-elements';
 import DBPLitElement from '@dbp-toolkit/common/dbp-lit-element';
 import * as commonUtils from "@dbp-toolkit/common/utils";
 import {Icon, MiniSpinner} from '@dbp-toolkit/common';
+import {send as notify} from '@dbp-toolkit/common/notification';
 import * as commonStyles from '@dbp-toolkit/common/styles';
 import {NextcloudFilePicker} from "./dbp-nextcloud-file-picker";
 import {classMap} from 'lit-html/directives/class-map.js';
@@ -314,7 +315,14 @@ export class FileSource extends ScopedElementsMixin(DBPLitElement) {
 
         // no suitable files found
         if (filesToHandle.length === 0) {
-            throw new Error('ZIP file does not contain any files of ' + this.allowedMimeTypes);
+            console.error('ZIP file does not contain any files of ' + this.allowedMimeTypes);
+            //throw new Error('ZIP file does not contain any files of ' + this.allowedMimeTypes);
+            notify({
+                "summary": i18n.t('file-source.no-usable-files-in-zip'),
+                "body": i18n.t('file-source.no-usable-files-hint') + this.allowedMimeTypes,
+                "type": 'danger',
+                "timeout": 0,
+            });
         }
         return filesToHandle;
     }

packages/file-handling/src/i18n/de/translation.json

@@ -13,7 +13,9 @@
   "file-source": {
     "modal-select-files": "Dateien auswählen",
     "modal-close": "Dialog schließen",
-    "nav-local": "Lokaler Computer"
+    "nav-local": "Lokaler Computer",
+    "no-usable-files-in-zip": "ZIP Datei enthält keine verwendbaren Dateien",
+    "no-usable-files-hint": "Laden Sie eine ZIP Datei mit Dateien von folgendem Typ hoch: "
   },
   "file-sink": {
     "local-intro": "{{count}} Datei herunterladen",

packages/file-handling/src/i18n/en/translation.json

@@ -13,7 +13,9 @@
   "file-source": {
     "modal-select-files": "Select files",
     "modal-close": "Close dialog",
-    "nav-local": "My device"
+    "nav-local": "My device",
+    "no-usable-files-in-zip": "ZIP file does not contain any usable files",
+    "no-usable-files-hint": "Upload a ZIP file with file type(s) of "
   },
   "file-sink": {
     "local-intro": "Download {{count}} file",