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1 import {Component, OnInit} from 'angular2/core';
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2
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3 import {NG_TABLE_DIRECTIVES} from 'ng2-table/ng2-table';
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4 import {PAGINATION_DIRECTIVES} from 'ng2-bootstrap/ng2-bootstrap';
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5
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6 import {QueryState} from './query-state';
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7
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8 @Component({
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9 selector: 'query-result-table',
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10 template: `
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11 <div *ngIf="queryState && queryState.results">
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12 <span>Cypher query:</span>
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13 <pre>{{queryState.resultCypherQuery}}</pre>
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14 <h2>Query result</h2>
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15 <pre *ngIf="config.paging">{{queryState.resultInfo}}: page {{page}} of {{numPages}}</pre>
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16 <pagination *ngIf="config.paging"
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17 class="pagination-sm"
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18 [(ngModel)]="page"
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19 [totalItems]="length"
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20 [itemsPerPage]="itemsPerPage"
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21 [maxSize]="maxSize"
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22 [boundaryLinks]="true"
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23 [rotate]="false"
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24 (pageChanged)="onChangeTable(config, $event)"
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25 (numPages)="numPages = $event">
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26 </pagination>
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27 <ngTable [config]="config.sorting"
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28 (tableChanged)="onChangeTable(config)"
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29 [rows]="rows" [columns]="columns">
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30 </ngTable>
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31 </div>
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32 `,
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33 inputs: ['queryState', 'data', 'columns'],
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34 directives: [NG_TABLE_DIRECTIVES, PAGINATION_DIRECTIVES]
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35 })
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36
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37 export class QueryResultTableComponent implements OnInit {
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38
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39 public queryState: QueryState;
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40 public data: Array<any>;
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41 public columns: Array<any>;
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42
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43 public rows: Array<any>;
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44
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45 public page: number = 1;
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46 public itemsPerPage: number = 10;
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47 public maxSize: number = 5;
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48 public numPages: number = 1;
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49 public length: number = 0;
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50
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51 public config: any = {
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52 paging: true,
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53 sorting: {'columns': this.columns},
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54 //filtering: {filterString: '', columnName: 'position'}
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55 };
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56
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57 ngOnChanges() {
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58 console.debug("result table changed! queryState=", this.queryState?this.queryState.resultColumns:'');
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59 this.config.sorting = this.queryState.resultColumns;
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60 this.onChangeTable(this.config, null);
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61 }
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62
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63 ngOnInit() {
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64 console.debug("result table init!");
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65 }
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66
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67 changePage(page:any, data:Array<any> = this.data):Array<any> {
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68 let start = (page.page - 1) * page.itemsPerPage;
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69 let end = page.itemsPerPage > -1 ? (start + page.itemsPerPage) : data.length;
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70 return data.slice(start, end);
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71 }
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72
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73 changeSort(data: any, config: any) {
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74 console.debug("changeSort start");
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75 if (!config.sorting) {
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76 return data;
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77 }
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78 let columns = this.columns.filter(c => c.sort);
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79 // simple sorting
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80 let sorted = data.sort((previous: any, current: any) => {
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81 for (let i = 0; i < columns.length; i++) {
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82 let sort = columns[i].sort;
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83 let columnName = columns[i].name;
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84 if (previous[columnName] > current[columnName]) {
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85 return sort === 'desc' ? -1 : 1;
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86 } else if (previous[columnName] < current[columnName]) {
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87 return sort === 'asc' ? -1 : 1;
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88 }
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89 }
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90 return 0;
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91 });
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92 console.debug("changeSort done");
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93 return sorted;
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94 }
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95
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96 changeFilter(data: any, config: any): any {
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97 if (!config.filtering) {
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98 return data;
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99 }
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100
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101 let filteredData: Array<any> = data.filter((item: any) =>
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102 item[config.filtering.columnName].match(this.config.filtering.filterString));
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103
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104 return filteredData;
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105 }
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106
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107 onChangeTable(config, page: any = config.paging) {
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108 console.debug("onChangeTable config=", config);
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109 if (config.filtering) {
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110 Object.assign(this.config.filtering, config.filtering);
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111 }
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112 if (config.sorting) {
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113 Object.assign(this.config.sorting, config.sorting);
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114 }
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115
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116 let filteredData = this.changeFilter(this.data, this.config);
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117 let sortedData = this.changeSort(filteredData, this.config);
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118
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119 this.rows = (page && config.paging) ? this.changePage(page, sortedData) : sortedData;
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120 this.length = sortedData.length;
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121 }
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122
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123 }
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