private handlePointerDown = (): void => {
if (this.selectedDrawing$.value) {
this.selectedDrawing$.next(null);
}
this.DOM.refreshEntities();
};
private handlePointerUp = (): void => {
this.DOM.refreshEntities();
this.updateActiveTool();
};
private handleClick = (): void => {
this.DOM.refreshEntities();
this.updateActiveTool();
};
private createDrawing(name: DrawingsNames, options: CreateDrawingOptions = {}): Drawing {
if (!this.mainSeries) {
throw new Error('[Drawings] main series is not defined');
}
const { id, state, isLocked = false, shouldUpdateDrawingsList = true } = options;
const shouldSelectAfterCreation = state === undefined;
if (shouldSelectAfterCreation && this.selectedDrawing$.value) {
this.selectedDrawing$.next(null);
}
const config = drawingsMap[name];
const drawingId = id ?? crypto.randomUUID();
let createdDrawing: Drawing | null = null;
const selected$ = this.selectedDrawing$.pipe(
map((drawing) => drawing?.id === drawingId),
distinctUntilChanged(),
);
const construct = (
chart: IChartApi,
series: ISeriesApi<SeriesType>,
interaction: DrawingInteraction,
) => {
const paneElement = series.getPane().getHTMLElement();
if (!paneElement) {
throw new Error('[Drawing Manager]: cannot place drawing, there is no pane');
}
const cells = paneElement.querySelectorAll<HTMLTableCellElement>(':scope > td');
const canvasElement = cells.item(1);
return config.construct({
chart,
series,
eventManager: this.eventManager,
container: canvasElement,
interaction,
removeSelf: () => this.removeDrawing(drawingId),
openSettings: () => {
if (createdDrawing) {
this.openSettings(createdDrawing);
}
},
});
};
const drawingFactory = (
zIndex: number,
moveUp: (id: string) => void,
moveDown: (id: string) => void,
) =>
new Drawing({
lwcChart: this.lwcChart,
mainSeries: this.mainSeries as SeriesStrategies,
id: drawingId,
drawingName: name,
name: drawingLabelById()[name],
onDelete: this.removeDrawing,
zIndex,
moveDown,
moveUp,
construct,
selected$,
isSelected: () => this.selectedDrawing$.value?.id === drawingId,
select: () => {
if (
!createdDrawing ||
createdDrawing.isCreationPending() ||
this.selectedDrawing$.value === createdDrawing
) {
return;
}
this.selectedDrawing$.next(createdDrawing);
},
isLocked,
paneId: this.paneId,
hotkeys: this.hotkeys,
setCopyPasteBuffer: (copyPasteBuffer) => {
this.copyPasteBuffer = copyPasteBuffer;
},
resetActiveTool: () => {
this.activeTool$.next('crosshair');
},
});
const entity = this.DOM.setEntity<Drawing>(drawingFactory);
createdDrawing = entity;
if (state !== undefined) {
entity.setState(state);
}
if (shouldUpdateDrawingsList) {
this.drawings$.next([...this.drawings$.value, entity]);
}
if (shouldSelectAfterCreation) {
entity.waitForCreation().then(() => {
if (!this.drawings$.value.includes(entity)) {
return;
}
this.selectedDrawing$.next(entity);
this.updateActiveTool();
this.DOM.refreshEntities();
});
}
return entity;
}