更改角度垫选项卡的顺序

时间：2018-11-14 14:04:53

标签： angular angular-material

我正在使用Angular Material中的<mat-tab-group #tabsGroup (selectedTabChange)="tabChanged($event)" (selectedIndexChange)="selectedIndexChange($event)" [(selectedIndex)]="selectedIndex"> <mat-tab id="tab0" label="First tab"> // Tab content </mat-tab> <mat-tab id="tab1" label="Second tab"> // Tab content </mat-tab> <mat-tab id="tab2" label="Third tab"> // Tab content </mat-tab> <mat-tab-group> ，并且需要根据某些条件动态创建标签。

<mat-tab-group #tabsGroup (selectedTabChange)="tabChanged($event)" (selectedIndexChange)="selectedIndexChange($event)" [(selectedIndex)]="selectedIndex">
    <mat-tab id="tab1" label="Second tab">
        // Tab content
    </mat-tab>
    <mat-tab id="tab0" label="First tab">
        // Tab content
    </mat-tab>
    <mat-tab id="tab2" label="Third tab">
        // Tab content
    </mat-tab>
<mat-tab-group>

根据某些条件，例如，我需要能够生成如下标签：

#EXTM3U
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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#EXT-X-BYTERANGE:679432@2014044
https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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https://d2zihajmogu5jn.cloudfront.net/bipbop-advanced/gear2/main.ts
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#EXT-X-ENDLIST

MatTabs API上是否有设置，或者我可以通过JavaScript做到这一点？谢谢！

2 个答案:

答案 0 :(得分：1)

您可以尝试使用*ngFor来使标签保持动态

html 

<mat-tab-group #tabsGroup (selectedTabChange)="tabChanged($event)" (selectedIndexChange)="selectedIndexChange($event)" [(selectedIndex)]="selectedIndex">
    <mat-tab *ngFor="let tab in tabList" id="{{tab.tabId}}" label="tab.label">
        <div [innerHtml]="tab.innerHtml"></div>
    </mat-tab>
<mat-tab-group>

ts 

tabList = [{
  label: 'First Tab',
  innerHtml: `<div>hello, World!</div>`,
  tabId: 'tab1'
}, {
  label: 'Second Tab',
  innerHtml: `<div>I am a different Tab</div>`,
  tabId: 'tab2'
}];

然后从那里可以根据需要对this.tabList对象进行排序

编辑：

在*ngIf上有关<mat-tab>的评论中有一个问题之后，下面是对*ngIf语句的修改后答案

html 

<mat-tab-group #tabsGroup (selectedTabChange)="tabChanged($event)" (selectedIndexChange)="selectedIndexChange($event)" [(selectedIndex)]="selectedIndex">
    <ng-template ngFor let-tab [ngForOf]="tabList">
        <mat-tab *ngIf="tab.showTab || someHideFunction(tab)" id="{{tab.tabId}}" label="tab.label">
            <div [innerHtml]="tab.innerHtml"></div>
        </mat-tab>
    </ng-template>
<mat-tab-group>

ts 

tabList = [{
  label: 'First Tab',
  innerHtml: `<div>hello, World!</div>`,
  tabId: 'tab1',
  showTab: true
}, {
  label: 'Second Tab',
  innerHtml: `<div>I am a different Tab</div>`,
  tabId: 'tab2',
  showTab: false
},  {
  label: 'Third Tab',
  innerHtml: `<app-custom-component [input]="tempVariable"></app-custom-component>`,
  tabId: 'tab3',
  showTab: true
}];

答案 1 :(得分：0)

您可以像下面这样使用ng-template。

<ng-template #content1>
  <div>Content 1</div>
</ng-template>

<ng-template #content2>
  <div>Content 2!</div>
</ng-template>

然后相应地在标签中使用。

<mat-tab id="tab0" [label]="yourFirstLabel">
    <div *ngIf="yourFlag; then content1 else content2"> </div>
</mat-tab>
<mat-tab id="tab1" [label]="yourSecondLabel">
    <div *ngIf="yourFlag; then content2 else content1"> </div>  
</mat-tab>

请注意，您也需要更新标签（yourFirstLabel和yourSecondLabel）

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