@nova-ui/charts
Version:
Nova Charts is a library created to provide potential consumers with solutions for various data visualizations that conform with the Nova Design Language. It's designed to solve common patterns identified by UX designers, but also be very flexible so that
145 lines • 18.1 kB
JavaScript
// © 2022 SolarWinds Worldwide, LLC. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import each from "lodash/each";
import findKey from "lodash/findKey";
import isUndefined from "lodash/isUndefined";
import { DESTROY_EVENT, INTERACTION_COORDINATES_EVENT, INTERACTION_VALUES_EVENT, MOUSE_ACTIVE_EVENT, REFRESH_EVENT, } from "../constants";
import { EventBus } from "./common/event-bus";
/**
* @ignore
*
* Chart collection takes care of charts grouping and rebroadcasting selected events coming from one charts to other charts
*/
export class ChartCollection {
lastIndex = -1;
/**
* These events will be rebroadcasted to other charts in the collection
*
* @type {[string]}
*/
events = [
INTERACTION_VALUES_EVENT,
INTERACTION_COORDINATES_EVENT,
MOUSE_ACTIVE_EVENT,
REFRESH_EVENT,
];
charts = {};
subscriptions = {};
eventBus;
constructor() { }
/**
* Register chart in this collection and subscribe to all configured events
*
* @param {IChart} chart
*/
addChart(chart) {
const index = (++this.lastIndex).toString();
this.charts[index] = chart;
if (!this.eventBus) {
this.initializeEventBus();
}
each(this.events, (event) => {
this.subscribe(index, chart.getEventBus().getStream(event), (value) => {
// this is where we check for the __broadcast__ flag, which means it originated in the chart collection
if (!value.broadcast) {
this.eventBus
?.getStream(event)
.next({ chartIndex: index, event: value });
}
});
});
this.subscribe(index, chart.getEventBus().getStream(DESTROY_EVENT), (value) => {
this.removeChart(chart);
if (Object.keys(this.charts).length === 0) {
this.destroy();
}
});
}
/**
* Removed chart from the collection and unsubscribes all related subscriptions
*
* @param {IChart} chart
*/
removeChart(chart) {
const key = this.getChartKey(chart);
if (isUndefined(key)) {
throw new Error("Chart not registered!");
}
this.unsubscribeChart(key);
delete this.charts[key];
}
/**
* Destroy this collection and release related resources
*/
destroy() {
this.eventBus?.destroy();
this.eventBus = undefined;
}
initializeEventBus() {
this.eventBus = new EventBus();
for (const event of this.events) {
this.eventBus
.getStream(event)
.subscribe((e) => {
for (const i of Object.keys(this.charts)) {
if (i !== e.chartIndex) {
// setting this flag prevents the event from looping infinitely
e.event.broadcast = true;
this.charts[i]
.getEventBus()
.getStream(event)
.next(e.event);
}
}
});
}
}
/**
* Register subscription for given chart key on given observable
*
* @param {string} chartKey
* @param {Observable<any>} observable
* @param {(value: any) => void} next
*/
subscribe(chartKey, observable, next) {
const sub = observable.subscribe(next);
let chartSubscriptions = this.subscriptions[chartKey];
if (isUndefined(chartSubscriptions)) {
chartSubscriptions = [];
this.subscriptions[chartKey] = chartSubscriptions;
}
chartSubscriptions.push(sub);
}
/**
* Unsubscribes subscriptions that belong to given chart key
*
* @param {string} chartKey
*/
unsubscribeChart(chartKey) {
each(this.subscriptions[chartKey], (sub) => {
sub.unsubscribe();
});
delete this.subscriptions[chartKey];
}
getChartKey(chart) {
return findKey(this.charts, (c) => c === chart);
}
}
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All rights reserved.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n//  of this software and associated documentation files (the \"Software\"), to\n//  deal in the Software without restriction, including without limitation the\n//  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n//  sell copies of the Software, and to permit persons to whom the Software is\n//  furnished to do so, subject to the following conditions:\n//\n// The above copyright notice and this permission notice shall be included in\n//  all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n//  THE SOFTWARE.\n\nimport each from \"lodash/each\";\nimport findKey from \"lodash/findKey\";\nimport isUndefined from \"lodash/isUndefined\";\nimport { Observable, Subscription } from \"rxjs\";\n\nimport {\n    DESTROY_EVENT,\n    INTERACTION_COORDINATES_EVENT,\n    INTERACTION_VALUES_EVENT,\n    MOUSE_ACTIVE_EVENT,\n    REFRESH_EVENT,\n} from \"../constants\";\nimport { EventBus } from \"./common/event-bus\";\nimport { IChart, IChartCollectionEvent, IChartEvent } from \"./common/types\";\n\n/**\n * @ignore\n *\n * Chart collection takes care of charts grouping and rebroadcasting selected events coming from one charts to other charts\n */\nexport class ChartCollection {\n    public lastIndex = -1;\n\n    /**\n     * These events will be rebroadcasted to other charts in the collection\n     *\n     * @type {[string]}\n     */\n    public events = [\n        INTERACTION_VALUES_EVENT,\n        INTERACTION_COORDINATES_EVENT,\n        MOUSE_ACTIVE_EVENT,\n        REFRESH_EVENT,\n    ];\n\n    private charts: { [key: string]: IChart } = {};\n    private subscriptions: { [key: string]: Subscription[] } = {};\n    private eventBus?: EventBus<IChartCollectionEvent>;\n\n    constructor() {}\n\n    /**\n     * Register chart in this collection and subscribe to all configured events\n     *\n     * @param {IChart} chart\n     */\n    public addChart(chart: IChart): void {\n        const index = (++this.lastIndex).toString();\n\n        this.charts[index] = chart;\n\n        if (!this.eventBus) {\n            this.initializeEventBus();\n        }\n\n        each(this.events, (event) => {\n            this.subscribe(\n                index,\n                chart.getEventBus().getStream(event),\n                (value: IChartEvent) => {\n                    // this is where we check for the __broadcast__ flag, which means it originated in the chart collection\n                    if (!value.broadcast) {\n                        this.eventBus\n                            ?.getStream(event)\n                            .next({ chartIndex: index, event: value });\n                    }\n                }\n            );\n        });\n\n        this.subscribe(\n            index,\n            chart.getEventBus().getStream(DESTROY_EVENT),\n            (value: any) => {\n                this.removeChart(chart);\n\n                if (Object.keys(this.charts).length === 0) {\n                    this.destroy();\n                }\n            }\n        );\n    }\n\n    /**\n     * Removed chart from the collection and unsubscribes all related subscriptions\n     *\n     * @param {IChart} chart\n     */\n    public removeChart(chart: IChart): void {\n        const key = this.getChartKey(chart);\n        if (isUndefined(key)) {\n            throw new Error(\"Chart not registered!\");\n        }\n\n        this.unsubscribeChart(key);\n        delete this.charts[key];\n    }\n\n    /**\n     * Destroy this collection and release related resources\n     */\n    public destroy(): void {\n        this.eventBus?.destroy();\n        this.eventBus = undefined;\n    }\n\n    private initializeEventBus() {\n        this.eventBus = new EventBus<IChartCollectionEvent>();\n\n        for (const event of this.events) {\n            this.eventBus\n                .getStream(event)\n                .subscribe((e: IChartCollectionEvent) => {\n                    for (const i of Object.keys(this.charts)) {\n                        if (i !== e.chartIndex) {\n                            // setting this flag prevents the event from looping infinitely\n                            e.event.broadcast = true;\n                            this.charts[i]\n                                .getEventBus()\n                                .getStream(event)\n                                .next(e.event);\n                        }\n                    }\n                });\n        }\n    }\n\n    /**\n     * Register subscription for given chart key on given observable\n     *\n     * @param {string} chartKey\n     * @param {Observable<any>} observable\n     * @param {(value: any) => void} next\n     */\n    private subscribe(\n        chartKey: string,\n        observable: Observable<any>,\n        next: (value: any) => void\n    ) {\n        const sub = observable.subscribe(next);\n\n        let chartSubscriptions = this.subscriptions[chartKey];\n        if (isUndefined(chartSubscriptions)) {\n            chartSubscriptions = [];\n            this.subscriptions[chartKey] = chartSubscriptions;\n        }\n        chartSubscriptions.push(sub);\n    }\n\n    /**\n     * Unsubscribes subscriptions that belong to given chart key\n     *\n     * @param {string} chartKey\n     */\n    private unsubscribeChart(chartKey: string) {\n        each(this.subscriptions[chartKey], (sub) => {\n            sub.unsubscribe();\n        });\n        delete this.subscriptions[chartKey];\n    }\n\n    private getChartKey(chart: IChart): string | undefined {\n        return findKey(this.charts, (c: IChart) => c === chart);\n    }\n}\n"]}