如果你用到了nz-table組件,而且有勾選列表的需求時,就可以用該組件自帶的nzShowCheckbox勾選屬性,用法如下:
<nz-table #rowSelectionTable nzShowPagination nzShowSizeChanger [nzData]="" (nzCurrentPageDataChange)="" > <thead> <tr> <th nzShowCheckbox [(nzChecked)]="" [nzIndeterminate]="" (nzCheckedChange)="" ></th> </tr> </thead> <tbody> <tr *ngFor="let data of rowSelectionTable.data"> <td nzShowCheckbox [(nzChecked)]="" (nzCheckedChange)="" ></td> </tr> </tbody> </nz-table>
第一列是聯動的選擇框,增加 nzShowCheckbox 后,th 獲得和 nz-checkbox 一樣的功能,選擇后進行操作,完成后清空選擇,請注意:數據邏輯需要自行控制。
數據方面組件案例定義了一個mapOfCheckedId對象,可以把數據里用於唯一標識的id或其他字段的值存入該對象,然后通過改變它的值(boolean)去控制列表行要不要勾選。
//ts文件定義:
mapOfCheckedId: { [key: string]: boolean } = {};
//html文件:
<nz-table #rowSelectionTable nzShowPagination nzShowSizeChanger [nzData]="" (nzCurrentPageDataChange)="" > <thead> <tr> <th nzShowCheckbox [(nzChecked)]="" [nzIndeterminate]="" (nzCheckedChange)="" ></th> </tr> </thead> <tbody> <tr *ngFor="let data of rowSelectionTable.data"> <td nzShowCheckbox [(nzChecked)]="mapOfCheckedId[data.id]" (nzCheckedChange)="" ></td> </tr> </tbody> </nz-table>
列表勾選除了要控制數據邏輯,還需自行設置樣式。組件提供了[nzIndeterminate]屬性控制勾選樣式(主要用於設置th的復選框css),th的復選框可以有三種狀態:空、‘√’、‘-’,這里需要和它的[nzChecked]屬性配合使用:
[nzIndeterminate] |
[nzChecked] |
css顯示 |
| true | true | - |
| false | true | √ |
| false | false | 無css |
ts:
export class InterviewListComponent implements OnInit{
mapOfCheckedId: { [key: string]: boolean } = {}; allListCheck = { allChecked: false, indeterminate: false }; constructor() { } ngOnInit(){ }
//獲取表格數據
getTableList(){
//請求...
this.dataTable = res.data
this.refreshStatus() //每次請求完數據重置表格勾選狀態
}
//表格選中的樣式處理
refreshStatus(): void {
this.dataTable.forEach((item, i) => {
if (this.mapOfCheckedId[item.candidateId]) {
if (!this.checkedData.some(items => items.candidateId === item.candidateId)) { this.checkedData.push(item); }
} else {
this.checkedData = this.checkedData.filter(items => items.candidateId !== item.candidateId);
}
});
//設置全選checkbox的樣式
if (this.dataTable.every(item => this.mapOfCheckedId[item.candidateId] )){
this.allListCheck.allChecked = true;
this.allListCheck.indeterminate = false;
}else{
this.allListCheck.allChecked = false;
this.allListCheck.indeterminate = this.dataTable.some(item => this.mapOfCheckedId[item.candidateId]);
}
this.copyCheckData = JSON.parse(JSON.stringify(this.checkedData));
}
checkAll(value: boolean): void {
this.dataTable.forEach(item => this.mapOfCheckedId[item.candidateId] = value);
this.refreshStatus();
this.refreshStatus();
}
clearChecked(){
this.checkedData = [];
this.copyCheckData = [];
this.mapOfCheckedId = {};
this.allListCheck.allChecked = false;
this.allListCheck.indeterminate = false;
}
}
html:
<nz-table [nzLoading]="loading" #activeTable [nzData]="dataTable" [nzShowPagination]=false [nzFrontPagination]="false"> <thead> <tr> <th width="34" nzShowCheckbox [nzChecked]="allListCheck.allChecked" [nzIndeterminate]="allListCheck.indeterminate" (nzCheckedChange)="checkAll($event)"></th> </tr> </thead> <tbody> <tr *ngFor="let data of activeTable.data;let i=index" [ngClass]="{'checked':mapOfCheckedId[data.candidateId]}"> <td nzShowCheckbox [(nzChecked)]="mapOfCheckedId[data.candidateId]"(nzCheckedChange)="refreshStatus()" ></td> </tr> </tbody> </nz-table>
這樣就可以實現表格復選功能了,但是只能在點擊復選框時才能進行勾選,想要整行都可以,就需要再改造下:
ts:
export class InterviewListComponent implements OnInit{
mapOfCheckedId: { [key: string]: boolean } = {};
allListCheck = { allChecked: false, indeterminate: false }; constructor() { } ngOnInit(){}
selectedTr(data){
this.mapOfCheckedId[data.candidateId] = !this.mapOfCheckedId[data.candidateId];
this.refreshStatus();
}
//表格選中的樣式處理
refreshStatus(): void {
this.dataTable.forEach((item, i) => {
if (this.mapOfCheckedId[item.candidateId]) {
if (!this.checkedData.some(items => items.candidateId === item.candidateId)) { this.checkedData.push(item); }
} else {
this.checkedData = this.checkedData.filter(items => items.candidateId !== item.candidateId);
}
});
//設置全選checkbox的樣式
if (this.dataTable.every(item => this.mapOfCheckedId[item.candidateId] )){
this.allListCheck.allChecked = true;
this.allListCheck.indeterminate = false;
}else{
this.allListCheck.allChecked = false;
this.allListCheck.indeterminate = this.dataTable.some(item => this.mapOfCheckedId[item.candidateId]);
}
this.copyCheckData = JSON.parse(JSON.stringify(this.checkedData));
}
checkAll(value: boolean): void {
let newValue = !value;
this.dataTable.forEach(item => this.mapOfCheckedId[item.candidateId] = newValue);
this.refreshStatus();
this.dataTable.forEach(item => this.mapOfCheckedId[item.candidateId] = newValue);
this.refreshStatus();
}
clearChecked(){
this.checkedData = [];
this.copyCheckData = [];
this.mapOfCheckedId = {};
this.allListCheck.allChecked = false;
this.allListCheck.indeterminate = false;
}
}
html:
<nz-table [nzLoading]="loading" #activeTable [nzData]="dataTable" [nzShowPagination]=false [nzFrontPagination]="false"> <thead> <tr (click)="checkAll(allListCheck.allChecked)">
<th width="34" nzShowCheckbox [nzChecked]="allListCheck.allChecked" [nzIndeterminate]="allListCheck.indeterminate" (click)="checkAll(allListCheck.allChecked);$event.stopPropagation()"></th> </tr> </thead> <tbody> <tr *ngFor="let data of activeTable.data;let i=index" [ngClass]="{'checked':mapOfCheckedId[data.candidateId]}" (click)="selectedTr(data)"> <td nzShowCheckbox [(nzChecked)]="mapOfCheckedId[data.candidateId]" (click)="refreshStatus();$event.stopPropagation()" ></td> </tr> </tbody> </nz-table>
說明一下:在tr上設置了點擊事件后,td復選框原本的(nzCheckedChange)就不能再用了,需要改成click事件。
