/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import * as zrUtil from 'zrender/src/core/util';
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import env from 'zrender/src/core/env';
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import {makeInner} from '../../util/model';
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import ExtensionAPI from '../../core/ExtensionAPI';
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import { ZRenderType } from 'zrender/src/zrender';
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import { ZRElementEvent } from '../../util/types';
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import { Dictionary } from 'zrender/src/core/types';
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type DispatchActionMethod = ExtensionAPI['dispatchAction'];
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type Handler = (
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currTrigger: 'click' | 'mousemove' | 'leave',
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event: ZRElementEvent,
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dispatchAction: DispatchActionMethod
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) => void;
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interface Record {
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handler: Handler
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}
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interface InnerStore {
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initialized: boolean
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records: Dictionary<Record>
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}
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interface ShowTipPayload {
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type: 'showTip'
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dispatchAction: DispatchActionMethod
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}
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interface HideTipPayload {
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type: 'hideTip'
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dispatchAction: DispatchActionMethod
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}
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interface Pendings {
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showTip: ShowTipPayload[]
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hideTip: HideTipPayload[]
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}
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const inner = makeInner<InnerStore, ZRenderType>();
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const each = zrUtil.each;
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/**
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* @param {string} key
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* @param {module:echarts/ExtensionAPI} api
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* @param {Function} handler
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* param: {string} currTrigger
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* param: {Array.<number>} point
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*/
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export function register(key: string, api: ExtensionAPI, handler?: Handler) {
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if (env.node) {
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return;
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}
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const zr = api.getZr();
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inner(zr).records || (inner(zr).records = {});
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initGlobalListeners(zr, api);
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const record = inner(zr).records[key] || (inner(zr).records[key] = {} as Record);
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record.handler = handler;
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}
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function initGlobalListeners(zr: ZRenderType, api?: ExtensionAPI) {
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if (inner(zr).initialized) {
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return;
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}
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inner(zr).initialized = true;
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useHandler('click', zrUtil.curry(doEnter, 'click'));
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useHandler('mousemove', zrUtil.curry(doEnter, 'mousemove'));
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// useHandler('mouseout', onLeave);
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useHandler('globalout', onLeave);
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function useHandler(
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eventType: string,
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cb: (record: Record, e: ZRElementEvent, dispatchAction: DispatchActionMethod) => void
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) {
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zr.on(eventType, function (e: ZRElementEvent) {
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const dis = makeDispatchAction(api);
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each(inner(zr).records, function (record) {
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record && cb(record, e, dis.dispatchAction);
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});
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dispatchTooltipFinally(dis.pendings, api);
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});
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}
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}
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function dispatchTooltipFinally(pendings: Pendings, api: ExtensionAPI) {
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const showLen = pendings.showTip.length;
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const hideLen = pendings.hideTip.length;
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let actuallyPayload;
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if (showLen) {
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actuallyPayload = pendings.showTip[showLen - 1];
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}
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else if (hideLen) {
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actuallyPayload = pendings.hideTip[hideLen - 1];
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}
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if (actuallyPayload) {
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actuallyPayload.dispatchAction = null;
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api.dispatchAction(actuallyPayload);
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}
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}
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function onLeave(
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record: Record,
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e: ZRElementEvent,
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dispatchAction: DispatchActionMethod
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) {
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record.handler('leave', null, dispatchAction);
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}
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function doEnter(
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currTrigger: 'click' | 'mousemove' | 'leave',
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record: Record,
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e: ZRElementEvent,
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dispatchAction: DispatchActionMethod
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) {
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record.handler(currTrigger, e, dispatchAction);
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}
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function makeDispatchAction(api: ExtensionAPI) {
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const pendings: Pendings = {
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showTip: [],
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hideTip: []
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};
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// FIXME
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// better approach?
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// 'showTip' and 'hideTip' can be triggered by axisPointer and tooltip,
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// which may be conflict, (axisPointer call showTip but tooltip call hideTip);
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// So we have to add "final stage" to merge those dispatched actions.
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const dispatchAction = function (payload: ShowTipPayload | HideTipPayload) {
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const pendingList = pendings[payload.type];
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if (pendingList) {
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(pendingList as ShowTipPayload[]).push(payload as ShowTipPayload);
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}
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else {
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payload.dispatchAction = dispatchAction;
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api.dispatchAction(payload);
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}
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};
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return {
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dispatchAction: dispatchAction,
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pendings: pendings
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};
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}
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export function unregister(key: string, api: ExtensionAPI) {
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if (env.node) {
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return;
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}
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const zr = api.getZr();
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const record = (inner(zr).records || {})[key];
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if (record) {
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inner(zr).records[key] = null;
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}
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}
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