class Datafeed {
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constructor(vm) {
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this.self = vm;
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}
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onReady(callback) {
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// console.log('onReady')
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var _this = this;
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return new Promise(function (resolve) {
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var configuration = _this.defaultConfiguration();
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if (_this.self.getConfig) {
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configuration = Object.assign(
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_this.defaultConfiguration(),
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_this.self.getConfig()
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);
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}
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resolve(configuration);
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}).then(function (data) {
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if (_this.self.onReady) {
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_this.self.onReady()
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}
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return callback(data);
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});
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}
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resolveSymbol(symbolName, onSymbolResolvedCallback, onResolveErrorCallback) {
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var _this2 = this
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return new Promise(function (resolve) {
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var symbolInfo = _this2.defaultSymbol();
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if (_this2.self.getSymbol) {
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symbolInfo = Object.assign(_this2.defaultSymbol(), _this2.self.getSymbol());
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}
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resolve(symbolInfo);
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}).then(function (data) {
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return onSymbolResolvedCallback(data);
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}).catch(function (err) {
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return onResolveErrorCallback(err);
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});
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}
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getBars(symbolInfo, resolution, rangeStartDate, rangeEndDate, onDataCallback, onErrorCallback) {
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var onLoadedCallback = function onLoadedCallback(data) {
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if (data && data.length) {
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onDataCallback(data, { noData: false });
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} else {
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onDataCallback([], { noData: true });
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}
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};
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this.self.getBars(symbolInfo, resolution, rangeStartDate, rangeEndDate, onLoadedCallback, onErrorCallback);
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}
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subscribeBars(symbolInfo, resolution, onRealtimeCallback, subscriberUID, onResetCacheNeededCallback) {
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this.self.onRealtimeCallback = onRealtimeCallback
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if (this.self.subscribeBars) {
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this.self.subscribeBars(symbolInfo, resolution, onRealtimeCallback, subscriberUID, onResetCacheNeededCallback)
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}
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}
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unsubscribeBars(subscriberUID) {
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if (this.self.unsubscribeBars) {
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this.self.unsubscribeBars(subscriberUID)
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}
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}
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defaultConfiguration() {
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return {
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supports_search: false,
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supports_group_request: false,
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supported_resolutions: this.self.resolutions,
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supports_marks: true,
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supports_timescale_marks: true,
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supports_time: true
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};
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}
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defaultSymbol() {
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return {
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'name': this.self.symbol.toLocaleUpperCase(),
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'timezone': 'Asia/Shanghai',
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'minmov': 1,
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'minmov2': 0,
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'fractional': false,
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//设置周期
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'session': '24x7',
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'has_intraday': true,
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'has_no_volume': false,
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//设置是否支持周月线
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"has_daily": true,
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//设置是否支持周月线
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"has_weekly_and_monthly": true,
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'description': this.self.symbol.toLocaleUpperCase(),
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//设置精度 100表示保留两位小数 1000三位 10000四位
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'pricescale': 10000,
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'ticker': this.self.symbol.toLocaleUpperCase(),
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// intraday_multipliers: ["1","5",
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// "15",
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// "30",
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// "60",
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// "240",],
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'supported_resolutions': this.self.resolutions
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};
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}
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}
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export default Datafeed;
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