new "document" widget (#2307)

ng2-components/ng2-activiti-form/src/components/widgets/document/document.widget.ts

@@ -0,0 +1,50 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component, OnInit, ViewEncapsulation } from '@angular/core';
+import { FormService } from './../../../services/form.service';
+import { baseHost , WidgetComponent } from './../widget.component';
+
+@Component({
+    selector: 'adf-form-document-widget',
+    templateUrl: 'document.widget.html',
+    host: baseHost,
+    encapsulation: ViewEncapsulation.None
+})
+export class DocumentWidgetComponent extends WidgetComponent implements OnInit {
+
+    fileId: string = null;
+    hasFile: boolean = false;
+
+    constructor(public formService: FormService) {
+         super(formService);
+    }
+
+    ngOnInit() {
+        if (this.field) {
+            const file = this.field.value;
+
+            if (file) {
+                this.fileId = file.id;
+                this.hasFile = true;
+            } else {
+                this.fileId = null;
+                this.hasFile = false;
+            }
+        }
+    }
+}