Angular Material - mat-menu 的动态样式

Question

I would like to apply a dynamic style to the content of mat-menu. I know that I can use panelClass to assign a class, but my class is dynamic.

Angular has a [ngStyle] or just [style.attribute] binding for such cases, but that does not work on the mat-menu (or other overlays), it only works on directly rendered elements.

I am looking for something like panelStyle which would allow me to set the styles dynamically directly on the panel which holds the mat-menu.

Here is a code example, where panelClass allows me to set some css, but only static one and ngStyle is useless.

<mat-menu [ngStyle]="{'background-color': colorVariable }" panelClass="some-static-class-works">

What I am looking for:

<mat-menu [panelStyle]="{'background-color': colorVariable }">

Answer 1

You can wrap your menu content in a single DIV and apply style dynamically to that. With background-color, to get it to fill the entire panel you need to adjust margins and padding. For example:

<mat-menu>
  <div [ngStyle]="{'background-color': colorVariable }" class="menu-panel">
    <button mat-menu-item>Item 1</button>
    <button mat-menu-item>Item 2</button>
  </div>
</mat-menu>

.menu-panel {
  margin: -8px 0; 
  padding: 8px 0;
}