Material2如何在mouseenter上打开md菜单 [英] Material2 How to open md-menu on mouseenter

问题描述

我正在使用材料2创建菜单.我有一个md按钮触发器，可以打开一个md菜单.我希望按钮在悬停时打开.我知道Material Angular.io仍然很新.我已经搜索了这个问题，但我只是想出了Angularjs的结果.谁能指出我正确的方向?

I am using Material 2 to create a menu. I have a md-button trigger that opens a md-menu. I want the button to open on hover. I know that the Material Angular.io is still pretty new. I have googled the problem but I just come up with Angularjs results. Can anyone point me in the right direction?

这是我的html示例:

Here is a sample of my html:

    <button md-button [mdMenuTriggerFor]="userMenu" class="nav-btn" ><i class="fa fa-user" aria-hidden="true" id="user-icon"></i> NAME</button>
    <md-menu #userMenu="mdMenu" xPosition="before" yPosition="below" [overlapTrigger]="false">
        <button md-menu-item class="nav-dropdown" [routerLink]="['/dashboard']">DASHBOARD</button>
        <button md-menu-item class="nav-dropdown">MY PROFILE</button>
        <button md-menu-item class="nav-dropdown">lOGOUT</button>
    </md-menu>

推荐答案

您可以通过在mouseenter上手动触发openMenu()方法来实现.

You can do it by manually triggering the openMenu() method on mouseenter.

示例:

<button md-icon-button 
        [md-menu-trigger-for]="menu" 
        #menuTrigger="mdMenuTrigger" 
        (mouseenter)="menuTrigger.openMenu()"
        style="margin-right: 25px">
  <md-icon>more_vert</md-icon>Menu 1
</button>

<md-menu #menu="mdMenu">
  <button md-menu-item>
    <md-icon>dialpad</md-icon>
    <span>Redial</span>
  </button>
  <button md-menu-item disabled>
    <md-icon>voicemail</md-icon>
    <span>Check voicemail</span>
  </button>
  <button md-menu-item>
    <md-icon>notifications_off</md-icon>
    <span>Disable alerts</span>
  </button>
</md-menu>

柱塞演示

对于您的代码，应为:

<button md-button #menuTrigger="mdMenuTrigger" 
                  (mouseenter)="menuTrigger.openMenu()"
                  [mdMenuTriggerFor]="userMenu" 
                  class="nav-btn" >
  <i class="fa fa-user" aria-hidden="true" id="user-icon"></i> 
  NAME
</button>

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