角度2材质2 Sidenav工具栏像导航抽屉一样折叠

Question

我有一个sidenav和嵌套工具栏
toolbar.html

<md-sidenav-container fullscreen>
    <md-sidenav #sidenav mode="side" color="primary">
     <md-toolbar color="primary"><span>Sidenav</span></md-toolbar>
        <button md-button class="sidenav-link" (click)="sidenav.close()">
          <md-icon>home</md-icon><span class="title"> HOME</span>
          </button>
          <button md-button class="sidenav-link" (click)="sidenav.close()">
            <md-icon>home</md-icon><span class="title"> HOME</span>
          </button>
      </md-sidenav>
      <app-toolbar [sidenav]="sidenav"></app-toolbar>
</md-sidenav-container>

sidenav.html

<md-toolbar color="primary">
  <button md-button class="toolbar-menu-button"
          (click)="sidenav.toggle(); isCollapsed = !isCollapsed">
    <md-icon [@iconChange]="isCollapsed">menu</md-icon>
  </button>
  <span class="toolbar-spacer"></span>
  <button md-button class="toolbar-link" >DASHBOARD</button>
  <span class="toolbar-spacer"></span>
</md-toolbar>

https://plnkr.co/edit/up19ZNJyMt6uatqdI9uv?p=preview

我想关闭sidenav到导航抽屉之类的主页图标

关闭sidenav

打开sidenav

Answer 1

这可以使用简单的css hack来实现.我们可以调用方法增加()和减少()的基础上像一些事件改变sidenav的宽度的mouseenter和鼠标离开或在您的案件的onClick "工具栏菜单按钮"

<md-sidenav #sidenav mode="side" class="example-sidenav" [ngStyle]="{ 'width.em': sidenavWidth }" opened="true" (mouseover)="increase()"   (mouseleave)="decrease()">

当我们指向sidenav并且当我们将鼠标指针指向某个其他位置时减小宽度时,这将会影响sidenav的宽度.

  increase(){
    this.sidenavWidth = 15;
  }
  decrease(){
    this.sidenavWidth = 4;
  }

看看这个演示: - https://mini-sidenav.firebaseapp.com/

和github回购: - https://github.com/Ravi-Rajpurohit/mini-md-sidenav

我希望这有帮助 :-)

Answer 2

这个问题并不罕见。由于工具栏上的按钮控制打开和关闭状态，因此我必须添加一个来传递单击按钮时EventListener的状态。sidenav

基于该event标志，我添加了一些ngStyle可以保持sidenav. 请注意，sidenav现在始终打开[添加属性opened="true"]，因为它始终可见。我还最终使用工具栏上发出的标志来用于“Sidenav”标题。如果需要显示部分“Sid”，可以将其删除。

另外，由于 sidenav 始终打开，我添加了自定义 css 来动画宽度的变化。

笨蛋演示

工具栏.组件.ts：

export class ToolbarComponent implements OnInit {

  shortnav = true;

  @Input() sidenav;

  @Output()
  change: EventEmitter<booelan> = new EventEmitter<boolean>();

  constructor() { 
    console.log(this.sidenav);
  }

  ngOnInit() {
  }

  toggle(){
    this.shortnav = !this.shortnav;
    console.log("shortnav: " + this.shortnav)
    this.change.emit(this.shortnav);
  }

}

工具栏.component.html：

<button md-button class="toolbar-menu-button"
          (click)="toggle(); isCollapsed = !isCollapsed">

sidenav.component.ts：

export class SidenavOverviewExample {

  showSidenavTitle = false;
  sidenavWidth = 2.75;

  changeWidth(showShortNav){
    if(showShortNav){
      this.sidenavWidth = 2.5;
      this.showSidenavTitle = false;
    }
    else{
      this.sidenavWidth = 13;
      this.showSidenavTitle = true;
    }
  }
}

sidenav.component.html：

<md-sidenav-container fullscreen>
    <md-sidenav #sidenav mode="side"   
                color="primary" 
                opened="true"
                [ngStyle]="{ 'width.em': sidenavWidth }"
                class="animate-sidenav">
     <md-toolbar color="primary">
       <span *ngIf="showSidenavTitle">Sidenav</span>
     </md-toolbar>
        <button md-button class="sidenav-link" (click)="sidenav.close()">
          <md-icon>home</md-icon><span class="title"> HOME</span>
          </button>
          <button md-button class="sidenav-link" (click)="sidenav.close()">
            <md-icon>home</md-icon><span class="title"> HOME</span>
          </button>
      </md-sidenav>

      <app-toolbar [sidenav]="sidenav" (change)="changeWidth($event)"></app-toolbar>

 </md-sidenav-container>

sidenav.component.css：

.mat-sidenav-transition .mat-sidenav{
  /* custom animation to grow and shrink width */
  -webkit-transition: width .3s !important; /* For Safari 3.1 to 6.0 */
  transition: width .3s !important;
}

希望这对您有帮助:)