动画Angular2中的参数 [英] Parameter in to Animation Angular2

问题描述

我正在尝试制作一个简单的动画，例如下面的简单jQuery

I'm trying to make a simple animation like the simple jQuery below

animate({'left' : left_indent})

我正在使用Angular2动画，但问题是如何将Component类外部的left_indent参数传递给动画触发器?

I'm using the Angular2 Animations but the problem is how do I pass the left_indent parameter outside my Component Class in to the animation trigger?

animations: [
    trigger('flyInOut', [

        state('for', style({
            left: this.left_indent,
        })),

        transition('* => for', [
            animate(2000, keyframes([
                style({ opacity: 1, transform: 'translateX(0)', offset: 0 }),
                style({ opacity: 1, transform: 'translateX(-300px)', offset: 0.5 }),
            ]))
        ]),
    ])
]

推荐答案

现在可以了.

animations: [
    trigger('flyInOut', [

        state('for', style({
            left: '{{left_indent}}', // use interpolation
        }), {params: {left_indent: 0}}), // default parameters values required

        transition('* => for', [
            animate(2000, keyframes([
                style({ opacity: 1, transform: 'translateX(0)', offset: 0 }),
                style({ opacity: 1, transform: 'translateX(-300px)', offset: 0.5 }),
            ]))
        ]),
    ])
]

更新(根据SplitterAlex的回答):

在模板中(对于Angular< 4.4.6):

in template (for Angular < 4.4.6):

<div [@flyInOut]="{value: triggerValue, left_indent: left_indent}"></div>

对于Angular> = 4.4.6模板应为

for Angular >= 4.4.6 template should be

<div [@flyInOut]="{value: triggerValue, params: {left_indent: left_indent}}"></div>

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