Method render

src/component/tooltip/TooltipView.ts:179–217

(
        tooltipModel: TooltipModel,
        ecModel: GlobalModel,
        api: ExtensionAPI
    )

    }

    render(
        tooltipModel: TooltipModel,
        ecModel: GlobalModel,
        api: ExtensionAPI
    ) {
        if (env.node || !api.getDom()) {
            return;
        }

        // Reset
        this.group.removeAll();

        this._tooltipModel = tooltipModel;

        this._ecModel = ecModel;

        this._api = api;

        const tooltipContent = this._tooltipContent;
        tooltipContent.update(tooltipModel);
        tooltipContent.setEnterable(tooltipModel.get('enterable'));

        this._initGlobalListener();

        this._keepShow();

        // PENDING
        // `mousemove` event will be triggered very frequently when the mouse moves fast,
        // which causes that the `updatePosition` function was also called frequently.
        // In Chrome with devtools open and Firefox, tooltip looks laggy and shakes. See #14695 #16101
        // To avoid frequent triggering,
        // consider throttling it in 50ms when transition is enabled
        if (this._renderMode !== 'richText' && tooltipModel.get('transitionDuration')) {
            createOrUpdate(this, '_updatePosition', 50, 'fixRate');
        }
        else {
            clear(this, '_updatePosition');
        }
    }

    private _initGlobalListener() {
        const tooltipModel = this._tooltipModel;