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| <template>
<div class="echarts"/>
</template>
<script>
import {watchEffect} from 'vue'
import * as echarts from 'echarts'
import debounce from 'lodash/debounce'
import {addListener, removeListener} from 'resize-detector'
const INIT_TRIGGERS = ['theme', 'initOptions', 'autoResize']
const REWATCH_TRIGGERS = ['manualUpdate', 'watchShallow']
export default {
props: {
option: {
type: Object,
default: () => {
},
},
initOptions: {
type: Object,
default: () => {
},
},
group: {
type: String,
default: '',
},
autoResize: {
type: Boolean,
default: true,
},
watchShallow: {
type: Boolean,
default: false,
},
manualUpdate: {
type: Boolean,
default: false,
},
proCity: {
type: String,
default: "",
},
level: {
type: String,
default: "province",
}
},
setup() {
watchEffect(() => {
})
return {
lastArea: 0,
}
},
watch: {
proCity() {
this.initOptionsWatcher()
this.refresh()
}
},
created() {
this.initOptionsWatcher()
INIT_TRIGGERS.forEach((prop) => {
this.$watch(
prop,
() => {
this.refresh()
},
{deep: true}
)
})
REWATCH_TRIGGERS.forEach((prop) => {
this.$watch(prop, () => {
this.initOptionsWatcher()
this.refresh()
})
})
},
mounted() {
if (this.option) {
this.init()
}
},
activated() {
if (this.autoResize) {
this.chart && this.chart.resize()
}
},
unmounted() {
if (this.chart) {
this.destroy()
}
},
methods: {
mergeOptions(option, notMerge, lazyUpdate) {
if (this.manualUpdate) {
this.manualOptions = option
}
if (!this.chart) {
this.init(option)
} else {
this.delegateMethod('setOption', option, notMerge, lazyUpdate)
}
},
appendData(params) {
this.delegateMethod('appendData', params)
},
resize(option) {
this.delegateMethod('resize', option)
},
dispatchAction(payload) {
this.delegateMethod('dispatchAction', payload)
},
convertToPixel(finder, value) {
return this.delegateMethod('convertToPixel', finder, value)
},
convertFromPixel(finder, value) {
return this.delegateMethod('convertFromPixel', finder, value)
},
containPixel(finder, value) {
return this.delegateMethod('containPixel', finder, value)
},
showLoading(type, option) {
this.delegateMethod('showLoading', type, option)
},
hideLoading() {
this.delegateMethod('hideLoading')
},
getDataURL(option) {
return this.delegateMethod('getDataURL', option)
},
getConnectedDataURL(option) {
return this.delegateMethod('getConnectedDataURL', option)
},
clear() {
this.delegateMethod('clear')
},
dispose() {
this.delegateMethod('dispose')
},
delegateMethod(name, ...args) {
if (!this.chart) {
this.init()
}
return this.chart[name](...args)
},
delegateGet(methodName) {
if (!this.chart) {
this.init()
}
return this.chart[methodName]()
},
getArea() {
return this.$el.offsetWidth * this.$el.offsetHeight
},
init(option) {
if (this.chart) {
return
}
const chart = echarts.init(this.$el, this.initOptions)
chart.showLoading();
if (this.group) {
chart.group = this.group
}
let geoJson = require(`@/geo/${this.level}/${this.proCity}.json`)
echarts.registerMap('china', geoJson);
chart.hideLoading();
chart.setOption(option || this.manualOptions || this.option || {}, true)
if (this.autoResize) {
this.lastArea = this.getArea()
this.__resizeHandler = debounce(
() => {
if (this.lastArea === 0) {
this.mergeOptions({}, true)
this.resize()
this.mergeOptions(this.option || this.manualOptions || {}, true)
} else {
this.resize()
}
this.lastArea = this.getArea()
},
100,
{leading: true}
)
addListener(this.$el, this.__resizeHandler)
}
Object.defineProperties(this, {
width: {
configurable: true,
get: () => {
return this.delegateGet('getWidth')
},
},
height: {
configurable: true,
get: () => {
return this.delegateGet('getHeight')
},
},
isDisposed: {
configurable: true,
get: () => {
return !!this.delegateGet('isDisposed')
},
},
computedOptions: {
configurable: true,
get: () => {
return this.delegateGet('getOption')
},
},
})
this.chart = chart
},
initOptionsWatcher() {
if (this.__unwatchOptions) {
this.__unwatchOptions()
this.__unwatchOptions = null
}
if (!this.manualUpdate) {
this.__unwatchOptions = this.$watch(
'option',
(val, oldVal) => {
if (!this.chart && val) {
this.init()
} else {
this.chart.setOption(val, val !== oldVal)
}
},
{deep: !this.watchShallow}
)
}
},
destroy() {
if (this.autoResize) {
removeListener(this.$el, this.__resizeHandler)
}
this.dispose()
this.chart = null
},
refresh() {
if (this.chart) {
this.destroy()
this.init()
}
},
},
connect(group) {
if (typeof group !== 'string') {
group = group.map((chart) => chart.chart)
}
echarts.connect(group)
},
disconnect(group) {
echarts.disConnect(group)
},
getMap(mapName) {
return echarts.getMap(mapName)
},
registerMap(mapName, geoJSON, specialAreas) {
echarts.registerMap(mapName, geoJSON, specialAreas)
},
graphic: echarts.graphic,
}
</script>
<style lang="scss">
</style>
|
