[ADF-2005] Cannot view document in tasklist attachment list (#2701)

demo-shell/src/app/components/process-service/task-attachments.component.ts

@@ -0,0 +1,76 @@
+/*!
+ * @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, Input, OnChanges, OnInit, ViewChild } from '@angular/core';
+import { ProcessUploadService, TaskListService, TaskAttachmentListComponent } from '@alfresco/adf-process-services';
+import { UploadService } from '@alfresco/adf-core';
+
+@Component({
+    selector: 'app-task-attachments',
+    templateUrl: './task-attachments.component.html',
+    styleUrls: ['./task-attachments.component.css'],
+    providers: [
+        { provide: UploadService, useClass: ProcessUploadService }
+    ]
+})
+
+export class TaskAttachmentsComponent implements OnInit, OnChanges {
+
+    @Input()
+    taskId: string;
+
+    @ViewChild(TaskAttachmentListComponent)
+    taskAttachList: TaskAttachmentListComponent;
+
+    fileShowed: boolean = false;
+    content: Blob;
+    contentName: string;
+
+    taskDetails: any;
+
+    constructor(private uploadService: UploadService,
+                private activitiTaskList: TaskListService) {
+
+    }
+
+    ngOnInit() {
+        this.uploadService.fileUploadComplete.subscribe(value => this.onFileUploadComplete(value.data));
+    }
+
+    ngOnChanges() {
+        if (this.taskId) {
+            this.activitiTaskList.getTaskDetails(this.taskId).map((res) => res).subscribe(
+                (res: any) => {
+                    this.taskDetails = res;
+                });
+        }
+    }
+
+    onFileUploadComplete(content: any) {
+        this.taskAttachList.add(content);
+    }
+
+    onAttachmentClick(content: any): void {
+        this.fileShowed = true;
+        this.content = content.contentBlob;
+        this.contentName = content.name;
+    }
+
+    isCompletedTask(): boolean {
+        return this.taskDetails && this.taskDetails.endDate !== undefined && this.taskDetails.endDate !== null;
+    }
+}