@visactor/vchart/esm/animation/animate-manager.js

charts lib based @visactor/VGrammar

import { StateManager } from "../compile/signal/state-manager";

import { PREFIX } from "../constant/base";

import { createID } from "../util/id";

import { AnimationStateEnum } from "./interface";

export class AnimateManager extends StateManager {
    constructor() {
        super(...arguments), this.id = createID(), this.stateKeyToSignalName = key => `${PREFIX}_animate_${this.id}_${key}`;
    }
    getAnimationStateSignalName() {
        return this.stateKeyToSignalName("animationState");
    }
    updateAnimateState(state, noRender) {
        state === AnimationStateEnum.update ? this.updateState({
            animationState: {
                callback: (datum, element) => element.diffState
            }
        }, noRender) : state === AnimationStateEnum.appear ? this.updateState({
            animationState: {
                callback: (datum, element) => "exit" === element.diffState ? AnimationStateEnum.none : AnimationStateEnum.appear
            }
        }, noRender) : this.updateState({
            animationState: {
                callback: (datum, element) => state
            }
        }, noRender);
    }
    _getDefaultStateMap() {
        return {
            animationState: {
                callback: (datum, element) => "exit" === element.diffState ? AnimationStateEnum.exit : "update" === element.diffState ? AnimationStateEnum.update : AnimationStateEnum.appear
            }
        };
    }
}
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