[ADF-610] Upload button and DnD area should not upload hidden files and folders (#1908)

[ADF-610]  upload cleanup
- more strongly typing
- api improvements

* Upload cleanup and api improvements

- remove old unused settings (formFields variable)
- individual options for uploaded files (i.e. versioning)
- upload button and drag-and-drop area now set individual settings for file versioning

* exclude hidden files from upload

ng2-components/ng2-alfresco-upload/src/components/upload-drag-area.component.ts

@@ -66,11 +66,6 @@ export class UploadDragAreaComponent {
         }
     }
 
-    ngOnChanges(changes) {
-        let formFields = this.createFormFields();
-        this.uploadService.setOptions(formFields, this.versioning);
-    }
-
     /**
      * Handles 'upload-files' events raised by child components.
      * @param e DOM event
@@ -79,13 +74,14 @@ export class UploadDragAreaComponent {
         e.stopPropagation();
         e.preventDefault();
 
-        let files = e.detail.files;
+        let files: File[] = e.detail.files;
         if (files && files.length > 0) {
+            const fileModels = files.map(f => new FileModel(f, { newVersion: this.versioning }));
             if (e.detail.data.obj.entry.isFolder) {
                 let id = e.detail.data.obj.entry.id;
-                this.onFilesDropped(files, id, '/');
+                this.onFilesDropped(fileModels, id, '/');
             } else {
-                this.onFilesDropped(files);
+                this.onFilesDropped(fileModels);
             }
         }
     }
@@ -95,9 +91,9 @@ export class UploadDragAreaComponent {
      *
      * @param {File[]} files - files dropped in the drag area.
      */
-    onFilesDropped(files: File[], rootId?: string, directory?: string): void {
+    onFilesDropped(files: FileModel[], rootId?: string, directory?: string): void {
         if (files.length) {
-            this.uploadService.addToQueue(files);
+            this.uploadService.addToQueue(...files);
             this.uploadService.uploadFilesInTheQueue(rootId || this.rootFolderId, directory || this.currentFolderPath, this.onSuccess);
             let latestFilesAdded = this.uploadService.getQueue();
             if (this.showNotificationBar) {
@@ -111,8 +107,9 @@ export class UploadDragAreaComponent {
      * @param item - FileEntity
      */
     onFilesEntityDropped(item: any): void {
-        item.file((file: any) => {
-            this.uploadService.addToQueue([file]);
+        item.file((file: File) => {
+            const fileModel = new FileModel(file, { newVersion: this.versioning });
+            this.uploadService.addToQueue(fileModel);
             let path = item.fullPath.replace(item.name, '');
             let filePath = this.currentFolderPath + path;
             this.uploadService.uploadFilesInTheQueue(this.rootFolderId, filePath, this.onSuccess);
@@ -228,12 +225,4 @@ export class UploadDragAreaComponent {
         }
         return message;
     }
-
-    private createFormFields(): any {
-        return {
-            formFields: {
-                overwrite: true
-            }
-        };
-    }
 }