[ADF-744] Attachment List is not displayed within Processes. (#1937)

* Use the adf process attachment list indise demo shell

* Change documentation

ng2-components/ng2-activiti-processlist/src/components/adf-process-attachment-list.component.ts

@@ -0,0 +1,163 @@
+/*!
+ * @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, OnChanges, Input, SimpleChanges, Output, EventEmitter } from '@angular/core';
+import { AlfrescoTranslationService, ContentService } from 'ng2-alfresco-core';
+import { ActivitiContentService } from 'ng2-activiti-form';
+
+@Component({
+    selector: 'adf-process-attachment-list',
+    styleUrls: ['./adf-process-attachment-list.component.css'],
+    templateUrl: './adf-process-attachment-list.component.html'
+})
+export class ActivitiProcessAttachmentListComponent implements OnChanges {
+
+    @Input()
+    processInstanceId: string;
+
+    @Output()
+    attachmentClick = new EventEmitter();
+
+    @Output()
+    error: EventEmitter<any> = new EventEmitter<any>();
+
+    attachments: any[] = [];
+
+    constructor(private translateService: AlfrescoTranslationService,
+                private activitiContentService: ActivitiContentService,
+                private contentService: ContentService) {
+
+        if (translateService) {
+            translateService.addTranslationFolder('ng2-activiti-processlist', 'node_modules/ng2-activiti-processlist/src');
+        }
+    }
+
+    ngOnChanges(changes: SimpleChanges) {
+        if (changes['processInstanceId'] && changes['processInstanceId'].currentValue) {
+            this.processInstanceId = changes['processInstanceId'].currentValue;
+            this.loadAttachmentsByProcessInstanceId(this.processInstanceId);
+        }
+    }
+
+    reset () {
+        this.attachments = [];
+    }
+
+    private loadAttachmentsByProcessInstanceId(processInstanceId: string) {
+        if (processInstanceId) {
+            this.reset();
+            this.activitiContentService.getProcessRelatedContent(processInstanceId).subscribe(
+                (res: any) => {
+                    res.data.forEach(content => {
+                        this.attachments.push({
+                            id: content.id,
+                            name: content.name,
+                            created: content.created,
+                            createdBy: content.createdBy.firstName + ' ' + content.createdBy.lastName,
+                            icon: this.activitiContentService.getMimeTypeIcon(content.mimeType)
+                        });
+                    });
+
+                },
+                (err) => {
+                    this.error.emit(err);
+                });
+        }
+    }
+
+    private deleteAttachmentById(contentId: string) {
+        if (contentId) {
+            this.activitiContentService.deleteRelatedContent(contentId).subscribe(
+                (res: any) => {
+                    this.attachments = this.attachments.filter(content => {
+                        return content.id !== contentId;
+                    });
+                },
+                (err) => {
+                    this.error.emit(err);
+                });
+        }
+    }
+
+    isEmpty(): boolean {
+        return this.attachments && this.attachments.length === 0;
+    }
+
+    onShowRowActionsMenu(event: any) {
+        let viewAction = {
+            title: 'View',
+            name: 'view'
+        };
+
+        let removeAction = {
+            title: 'Remove',
+            name: 'remove'
+        };
+
+        let downloadAction = {
+            title: 'Download',
+            name: 'download'
+        };
+
+        event.value.actions = [
+            viewAction,
+            removeAction,
+            downloadAction
+        ];
+    }
+
+    onExecuteRowAction(event: any) {
+        let args = event.value;
+        let action = args.action;
+        if (action.name === 'view') {
+            this.emitDocumentContent(args.row.obj);
+        } else if (action.name === 'remove') {
+            this.deleteAttachmentById(args.row.obj.id);
+        } else if (action.name === 'download') {
+            this.downloadContent(args.row.obj);
+        }
+    }
+
+    openContent(event: any): void {
+        let content = event.value.obj;
+        this.emitDocumentContent(content);
+    }
+
+    emitDocumentContent(content: any) {
+        this.activitiContentService.getFileRawContent(content.id).subscribe(
+            (blob: Blob) => {
+                content.contentBlob = blob;
+                this.attachmentClick.emit(content);
+            },
+            (err) => {
+                this.error.emit(err);
+            }
+        );
+    }
+
+    /**
+     * Invoke content download.
+     */
+    downloadContent(content: any): void {
+        this.activitiContentService.getFileRawContent(content.id).subscribe(
+            (blob: Blob) => this.contentService.downloadBlob(blob, content.name),
+            (err) => {
+                this.error.emit(err);
+            }
+        );
+    }
+}