rename old hasPermission as allowableOperation and introduce the real hasPermissions (#4294)

lib/core/directives/check-allowable-operation.directive.ts

@@ -0,0 +1,127 @@
+/*!
+ * @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.
+ */
+
+/* tslint:disable:no-input-rename  */
+
+import { ChangeDetectorRef, Directive, ElementRef, Host, Inject, Input, OnChanges, Optional, Renderer2,  SimpleChanges } from '@angular/core';
+import { NodeEntry } from '@alfresco/js-api';
+import { ContentService } from './../services/content.service';
+import { EXTENDIBLE_COMPONENT } from './../interface/injection.tokens';
+
+export interface NodeAllowableOperationSubject {
+    disabled: boolean;
+}
+
+@Directive({
+    selector: '[adf-check-allowable-operation]'
+})
+export class CheckAllowableOperationDirective implements OnChanges {
+
+    /** Node permission to check (create, delete, update, updatePermissions,
+     * !create, !delete, !update, !updatePermissions).
+     */
+    @Input('adf-check-allowable-operation')
+    permission: string  = null;
+
+    /** Nodes to check permission for. */
+    @Input('adf-nodes')
+    nodes: NodeEntry[] = [];
+
+    constructor(private elementRef: ElementRef,
+                private renderer: Renderer2,
+                private contentService: ContentService,
+                private changeDetector: ChangeDetectorRef,
+
+                @Host()
+                @Optional()
+                @Inject(EXTENDIBLE_COMPONENT) private parentComponent?: NodeAllowableOperationSubject) {
+    }
+
+    ngOnChanges(changes: SimpleChanges) {
+        if (changes.nodes && !changes.nodes.firstChange) {
+            this.updateElement();
+        }
+    }
+
+    /**
+     * Updates disabled state for the decorated element
+     *
+     * @memberof CheckAllowableOperationDirective
+     */
+    updateElement(): boolean {
+        let enable = this.hasAllowableOperations(this.nodes, this.permission);
+
+        if (enable) {
+            this.enable();
+        } else {
+            this.disable();
+        }
+
+        return enable;
+    }
+
+    private enable(): void {
+        if (this.parentComponent) {
+            this.parentComponent.disabled = false;
+            this.changeDetector.detectChanges();
+        } else {
+            this.enableElement();
+        }
+    }
+
+    private disable(): void {
+        if (this.parentComponent) {
+            this.parentComponent.disabled = true;
+            this.changeDetector.detectChanges();
+        } else {
+            this.disableElement();
+        }
+    }
+
+    /**
+     * Enables decorated element
+     *
+     * @memberof CheckAllowableOperationDirective
+     */
+    enableElement(): void {
+        this.renderer.removeAttribute(this.elementRef.nativeElement, 'disabled');
+    }
+
+    /**
+     * Disables decorated element
+     *
+     * @memberof CheckAllowableOperationDirective
+     */
+    disableElement(): void {
+        this.renderer.setAttribute(this.elementRef.nativeElement, 'disabled', 'true');
+    }
+
+    /**
+     * Checks whether all nodes have a particular permission
+     *
+     * @param  nodes Node collection to check
+     * @param  permission Permission to check for each node
+     * @memberof CheckAllowableOperationDirective
+     */
+    hasAllowableOperations(nodes: NodeEntry[], permission: string): boolean {
+        if (nodes && nodes.length > 0) {
+            return nodes.every((node) => this.contentService.hasAllowableOperations(node.entry, permission));
+        }
+
+        return false;
+    }
+}