我设法创建了这个,使用三个 Angular 动画状态:小、大和正常,对应于 div 的高度:
动画.ts
在这里,我以每个 div 的一个状态变量为例,我将这些状态中的每一个都默认设置为正常。然后,根据我单击的 div,我根据我们想要发生的情况切换状态:使我们单击的 div更大而其他div更小
export const expand = [
trigger('expand', [
state('big', style({
'height': '200px'
})),
state('normal', style({
'height': '100px'
})),
state('small', style({
'height': '50px'
})),
transition('* => *', [group([
animate(1000)
]
)])
]),
]
app.component.ts
import { expand } from './animations';
@Component({
...
animations: [expand]
})
export class AppComponent implements OnInit {
expandState1 = 'normal';
expandState2 = 'normal';
expandState3 = 'normal';
expandState4 = 'normal';
expandState5 = 'normal';
ngOnInit() {
this.resetStates();
}
resetStates() {
this.expandState1 = 'normal';
this.expandState2 = 'normal';
this.expandState3 = 'normal';
this.expandState4 = 'normal';
this.expandState5 = 'normal';
}
toggleShowDiv(divName: string) {
if (divName === 'div1') {
if (this.expandState1 === 'normal' || this.expandState1 === 'small') {
this.setToBig([1]);
this.setToSmall([2, 3, 4, 5]);
} else if (this.expandState1 === 'big' || this.expandState1 === 'small') {
this.resetStates();
}
} else if (divName === 'div2') {
if (this.expandState2 === 'normal' || this.expandState2 === 'small') {
this.setToBig([2]);
this.setToSmall([1, 3, 4, 5]);
} else if (this.expandState2 === 'big') {
this.resetStates();
}
} else if (divName === 'div3') {
if (this.expandState3 === 'normal' || this.expandState3 === 'small') {
this.setToBig([3]);
this.setToSmall([1, 2, 4, 5]);
} else if (this.expandState3 === 'big') {
this.resetStates();
}
} else if (divName === 'div4') {
if (this.expandState4 === 'normal' || this.expandState4 === 'small') {
this.setToBig([4]);
this.setToSmall([1, 2, 3, 5]);
} else if (this.expandState4 === 'big') {
this.resetStates();
}
} else if (divName === 'div5') {
if (this.expandState5 === 'normal' || this.expandState5 === 'small') {
this.setToBig([5]);
this.setToSmall([1, 2, 3, 4]);
} else if (this.expandState5 === 'big') {
this.resetStates();
}
}
}
setToSmall(choices: any) {
for (let i = 0; i < choices.length; i++) {
switch (choices[i]) {
case 1:
this.expandState1 = 'small';
break;
case 2:
this.expandState2 = 'small';
break;
case 3:
this.expandState3 = 'small';
break;
case 4:
this.expandState4 = 'small';
break;
case 5:
this.expandState5 = 'small';
break;
default:
break;
}
}
}
setToBig(choices: any) {
for (let i = 0; i < choices.length; i++) {
switch (choices[i]) {
case 1:
this.expandState1 = 'big';
break;
case 2:
this.expandState2 = 'big';
break;
case 3:
this.expandState3 = 'big';
break;
case 4:
this.expandState4 = 'big';
break;
case 5:
this.expandState5 = 'big';
break;
default:
break;
}
}
}
}
这是相应的模板:
每个 div 都有对动画触发器[@expand]
及其状态的引用。
<div class="wrapper scrollableDiv">
<div [@expand]="expandState1" (click)="toggleShowDiv('div1')" class="content divA">THIS IS CONTENT DIV 1</div>
<div [@expand]="expandState2" (click)="toggleShowDiv('div2')" class="content divA">THIS IS CONTENT DIV 2</div>
<div [@expand]="expandState3" (click)="toggleShowDiv('div3')" class="content divA">THIS IS CONTENT DIV 3</div>
<div [@expand]="expandState4" (click)="toggleShowDiv('div4')" class="content divA">THIS IS CONTENT DIV 4</div>
<div [@expand]="expandState5" (click)="toggleShowDiv('div5')" class="content divA">THIS IS CONTENT DIV 5</div>
</div>
这是我为此制作的 StackBlitz 示例:https ://stackblitz.com/edit/angular-t47iyy