如何使'mat-select'只读? [英] How to make a 'mat-select' readonly?

问题描述

我正在处理一个 angular 5 项目.有许多 mat-select 元素应该像文本框一样只读.我发现有一个 disabled 功能是:

I am working on a angular 5 project. There are many mat-select elements which is supposed to be readonly like text boxes. I found out that there is a disabled feature which is:

  <mat-form-field>
    <mat-select placeholder="Choose an option" [disabled]="disableSelect.value">
      <mat-option value="option1">Option 1</mat-option>
      <mat-option value="option2" disabled>Option 2 (disabled)</mat-option>
      <mat-option value="option3">Option 3</mat-option>
    </mat-select>
  </mat-form-field>

输出看起来像:

文字淡出，下面的内衬有变化，可以设为只读吗?

It fades out the text and the lining below get changes, is it possible to make it readonly?

推荐答案

向 select 块和 mat-form-field 块添加 CSS，这些可以自动应用于所有选择元素:

Add CSS to both select block and mat-form-field block, these can be applied automatically to all the select elements:

<mat-form-field class="readonly-wrapper">
  <mat-select class="readonly-block" placeholder="Choose an option" [disabled]="disableSelect.value">
    <mat-option value="option1">Option 1</mat-option>
    <mat-option value="option2" disabled>Option 2 (disabled)</mat-option>
    <mat-option value="option3">Option 3</mat-option>
  </mat-select>
</mat-form-field>  

CSS 代码:

.readonly-wrapper {
    cursor: not-allowed;
}

.readonly-wrapper .readonly-block {
    pointer-events: none;
}

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