我正在创建一个数据树,其中子组件只是父级的新实例。当我将鼠标悬停在父级文件夹名称上时,我会显示编辑和删除按钮。当我的文件夹展开以显示子组件时,我想要这种相同的行为,但悬停不起作用。我曾尝试禁用视图封装和CSS /文件中的/深/方法,但我无法得到任何工作。我也尝试绑定一个css类,然后将它传递给新的实例,但再次没有奏效。触发从父到子组件的悬停样式Angular2/4
库tree.html(父母库)
<div id="scrollbar-style">
<div *ngFor="let media of libraries">
<library
[media]="media">
</library>
</div>
</div>
library.html(库树的孩子)
<h4 class="category-name>{{media.name}}</h4> //hover here
<div class="edit-delete-btns"> //buttons that show on hover at the top level, but not in child Library components
<button name="media.id" (click)="onCategoryNameEdit()"></button>
<button name="media.id" (click)="onCategoryDelete(media.id)"></button>
</div>
<div *ngIf="libraryVisible">
<ul *ngIf="media.category">
<li *ngFor="let category of media.category">
<library [media]="category" [ngClass]="libraryCompClass" [libraryCompClass]="libraryComp"></library>
</li>
</ul>
</div>
Library.ts
import { Component, EventEmitter, HostListener, Input, OnInit, Output } from '@angular/core';
import { Media } from '../../../shared/models/media';
export class LibraryComponent implements OnInit {
@Input() libraryCompClass: string;
@Input() media: Media;
constructor() {}
}
library.scss
.edit-delete-btns {
display: none;
z-index: 102;
}
.category-name:hover ~ .edit-delete-btns {
display: inline-block; //this works in the top level to show the buttons
}
/deep/ div > ul > li > .libraryCompClass > .library > .category-name:hover ~ .edit-delete-btns {
display: inline-block; //my attempt at chaining classes to reach the deeper elements in the child component
}
.category-name {
z-index: 101;
}
.edit-delete-btns:hover {
display: inline-block;
}
任何想法将是有益的,谢谢!
我想通了,我错过了我的嵌套库组件的布尔属性,这是防止从显示的按钮。 – Austin