Method handler

src/core/echarts.ts:1291–1368

(e: ElementEvent)

    private _initEvents(): void {
        each(MOUSE_EVENT_NAMES, (eveName) => {
            const handler = (e: ElementEvent) => {
                const ecModel = this.getModel();
                const el = e.target;
                let params: ECElementEvent;
                const isGlobalOut = eveName === 'globalout';
                // no e.target when 'globalout'.
                if (isGlobalOut) {
                    params = {} as ECElementEvent;
                }
                else {
                    el && findEventDispatcher(el, (parent) => {
                        const ecData = getECData(parent);
                        if (ecData && ecData.dataIndex != null) {
                            const dataModel = ecData.dataModel || ecModel.getSeriesByIndex(ecData.seriesIndex);
                            params = (
                                dataModel && dataModel.getDataParams(ecData.dataIndex, ecData.dataType, el) || {}
                            ) as ECElementEvent;
                            return true;
                        }
                        // If element has custom eventData of components
                        else if (ecData.eventData) {
                            params = extend({}, ecData.eventData) as ECElementEvent;
                            return true;
                        }
                    }, true);
                }

                // Contract: if params prepared in mouse event,
                // these properties must be specified:
                // {
                //    componentType: string (component main type)
                //    componentIndex: number
                // }
                // Otherwise event query can not work.

                if (params) {
                    let componentType = params.componentType;
                    let componentIndex = params.componentIndex;
                    // Special handling for historic reason: when trigger by
                    // markLine/markPoint/markArea, the componentType is
                    // 'markLine'/'markPoint'/'markArea', but we should better
                    // enable them to be queried by seriesIndex, since their
                    // option is set in each series.
                    if (componentType === 'markLine'
                        || componentType === 'markPoint'
                        || componentType === 'markArea'
                    ) {
                        componentType = 'series';
                        componentIndex = params.seriesIndex;
                    }
                    const model = componentType && componentIndex != null
                        && ecModel.getComponent(componentType, componentIndex);
                    const view = model && this[
                        model.mainType === 'series' ? '_chartsMap' : '_componentsMap'
                    ][model.__viewId];

                    if (__DEV__) {
                        // `event.componentType` and `event[componentTpype + 'Index']` must not