Matteo Scandolo | a940101 | 2017-11-14 15:52:29 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | |
| 18 | import * as _ from 'lodash'; |
| 19 | import {IXosResourceService} from '../../datasources/rest/model.rest'; |
| 20 | import {IXosSgNode} from '../interfaces'; |
| 21 | |
| 22 | export interface IXosNodePositioner { |
| 23 | positionNodes(svg: {width: number, height: number}, nodes: any[]): ng.IPromise<IXosSgNode[]>; |
| 24 | } |
| 25 | |
| 26 | export class XosNodePositioner implements IXosNodePositioner { |
| 27 | static $inject = [ |
| 28 | '$log', |
| 29 | '$q', |
| 30 | 'ModelRest' |
| 31 | ]; |
| 32 | |
| 33 | constructor ( |
| 34 | private $log: ng.ILogService, |
| 35 | private $q: ng.IQService, |
| 36 | private ModelRest: IXosResourceService, |
| 37 | ) { |
| 38 | this.$log.info('[XosNodePositioner] Setup'); |
| 39 | } |
| 40 | |
| 41 | public positionNodes(svg: {width: number, height: number}, nodes: any[]): ng.IPromise<IXosSgNode[]> { |
| 42 | |
| 43 | // TODO refactor naming in this loop to make it clearer |
| 44 | const d = this.$q.defer(); |
| 45 | |
| 46 | this.getConstraints() |
| 47 | .then(constraints => { |
| 48 | const hStep = this.getHorizontalStep(svg.width, constraints); |
| 49 | const positionConstraints = _.reduce(constraints, (all: any, c: string | string[], i: number) => { |
| 50 | let pos: {x: number, y: number, fixed: boolean} = { |
| 51 | x: svg.width / 2, |
| 52 | y: svg.height / 2, |
| 53 | fixed: true |
| 54 | }; |
| 55 | // NOTE it's a single element, leave it in the middle |
| 56 | if (angular.isString(c)) { |
| 57 | pos.x = (i + 1) * hStep; |
| 58 | all[c] = pos; |
| 59 | } |
| 60 | else { |
| 61 | const verticalConstraints = c; |
| 62 | const vStep = this.getVerticalStep(svg.height, verticalConstraints); |
| 63 | _.forEach(verticalConstraints, (c: string, v: number) => { |
| 64 | if (angular.isString(c)) { |
| 65 | let p = angular.copy(pos); |
| 66 | p.x = (i + 1) * hStep; |
| 67 | p.y = (v + 1) * vStep; |
| 68 | all[c] = p; |
| 69 | } |
| 70 | }); |
| 71 | } |
| 72 | return all; |
| 73 | }, {}); |
| 74 | |
| 75 | d.resolve(_.map(nodes, n => { |
| 76 | return angular.merge(n, positionConstraints[n.data.name]); |
| 77 | })); |
| 78 | }) |
| 79 | .catch(e => { |
| 80 | this.$log.error(`[XosNodePositioner] Error retrieving constraints`, e); |
| 81 | }); |
| 82 | |
| 83 | return d.promise; |
| 84 | } |
| 85 | |
| 86 | private getConstraints(): ng.IPromise<any[]> { |
| 87 | const d = this.$q.defer(); |
| 88 | this.ModelRest.getResource('/core/servicegraphconstraints').query().$promise |
| 89 | .then(res => { |
| 90 | d.resolve(JSON.parse(res[0].constraints)); |
| 91 | }) |
| 92 | .catch(e => { |
| 93 | d.reject(e); |
| 94 | }); |
| 95 | return d.promise; |
| 96 | } |
| 97 | |
| 98 | private getHorizontalStep(svgWidth: number, constraints: any[]) { |
| 99 | return svgWidth / (constraints.length + 1); |
| 100 | } |
| 101 | |
| 102 | private getVerticalStep(svgHeight: number, verticalConstraints: string[]) { |
| 103 | // NOTE verticalConstraints represent the vertical part (the nested array) |
| 104 | return svgHeight / (verticalConstraints.length + 1); |
| 105 | } |
| 106 | } |