| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * 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 { |
| ChangeDetectionStrategy, |
| ChangeDetectorRef, |
| Component, |
| EventEmitter, |
| Input, |
| OnChanges, Output, |
| SimpleChanges, |
| } from '@angular/core'; |
| import {Device, LabelToggle, UiElement} from '../../models'; |
| import {LogService} from 'gui2-fw-lib'; |
| import {NodeVisual} from '../nodevisual'; |
| import {animate, state, style, transition, trigger} from '@angular/animations'; |
| |
| /** |
| * The Device node in the force graph |
| * |
| * Note: here the selector is given square brackets [] so that it can be |
| * inserted in SVG element like a directive |
| */ |
| @Component({ |
| selector: '[onos-devicenodesvg]', |
| templateUrl: './devicenodesvg.component.html', |
| styleUrls: ['./devicenodesvg.component.css'], |
| changeDetection: ChangeDetectionStrategy.Default, |
| animations: [ |
| trigger('deviceLabelToggle', [ |
| state('0', style({ // none |
| width: '36px', |
| })), |
| state('1, 2', // id |
| style({ width: '{{ txtWidth }}'}), |
| { params: {'txtWidth': '36px'}} |
| ), // default |
| transition('0 => 1', animate('250ms ease-in')), |
| transition('1 => 2', animate('250ms ease-in')), |
| transition('* => 0', animate('250ms ease-out')) |
| ]), |
| trigger('deviceLabelToggleTxt', [ |
| state('0', style( { |
| opacity: 0, |
| })), |
| state( '1,2', style({ |
| opacity: 1.0 |
| })), |
| transition('0 => 1', animate('250ms ease-in')), |
| transition('* => 0', animate('250ms ease-out')) |
| ]) |
| ] |
| }) |
| export class DeviceNodeSvgComponent extends NodeVisual implements OnChanges { |
| @Input() device: Device; |
| @Input() scale: number = 1.0; |
| @Input() labelToggle: LabelToggle = LabelToggle.NONE; |
| @Output() selectedEvent = new EventEmitter<UiElement>(); |
| textWidth: number = 36; |
| constructor( |
| protected log: LogService, |
| private ref: ChangeDetectorRef |
| ) { |
| super(); |
| } |
| |
| /** |
| * Called by parent (forcesvg) when a change happens |
| * |
| * There is a difficulty in passing the SVG text object to the animation |
| * directly, to get its width, so we capture it here and update textWidth |
| * local variable here and use it in the animation |
| */ |
| ngOnChanges(changes: SimpleChanges) { |
| if (changes['device']) { |
| if (!this.device.x) { |
| this.device.x = 0; |
| this.device.y = 0; |
| } |
| } |
| if (changes['labelToggle']) { |
| this.labelToggle = changes['labelToggle'].currentValue; |
| } |
| this.ref.markForCheck(); |
| } |
| |
| /** |
| * Calculate the text length in advance as well as possible |
| * |
| * The length of SVG text cannot be exactly estimated, because depending on |
| * the letters kerning might mean that it is shorter or longer than expected |
| * |
| * This takes the approach of 8px width per letter of this size, that on average |
| * evens out over words. A word like 'ilj' will be much shorter than 'wm0' |
| * because of kerning |
| * |
| * |
| * In addition in the template, the <svg:text> properties |
| * textLength and lengthAdjust ensure that the text becomes long with extra |
| * wide spacing created as necessary. |
| * |
| * Other approaches like getBBox() of the text |
| */ |
| labelTextLen() { |
| if (this.labelToggle === 1) { |
| return this.device.id.length * 8 * this.scale; |
| } else if (this.labelToggle === 2 && this.device && this.device.props.name && this.device.props.name.trim().length > 0) { |
| return this.device.props.name.length * 8 * this.scale; |
| } else { |
| return 0; |
| } |
| } |
| } |