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import h, { type CreateElement } from "../../html";
import cellAtCoord from "./cellAtCoord";
import drawGrid from "./drawGrid";
import "./index.css";
class NotiveGridElement extends HTMLElement {
#gridId!: string;
get gridId() {
return this.#gridId;
}
set gridId(val: string) {
this.#gridId = val;
this.setAttribute("grid-id", val);
}
get renderedGrid() {
return window.notive.getGrid(this.#gridId)!;
}
canvasEl: HTMLCanvasElement = h.canvas();
connectedCallback() {
if (!this.gridId) {
throw new Error("ntv-grid requries gridId attribute");
}
this.canvasEl.addEventListener("mousedown", (event) => {
const clientRect = this.canvasEl.getBoundingClientRect();
const x = event.x - clientRect.x;
const y = event.y - clientRect.y;
const cellRef = cellAtCoord(this.renderedGrid, x, y);
if (!cellRef) return;
window.notive.selectCell(this.#gridId, cellRef);
});
window.addEventListener("ntv:selection-changed", () => {
this.draw();
});
this.append(this.canvasEl);
this.draw();
}
draw() {
const ctx = this.canvasEl.getContext("2d");
if (!ctx) throw new Error("Unable to get canvas context");
const grid = window.notive.getGrid(this.gridId);
if (!grid) return;
this.canvasEl.setAttribute("width", grid.rect.width + "px");
this.canvasEl.setAttribute("height", grid.rect.height + "px");
drawGrid(
ctx,
grid,
window.notive.selection,
window.notive.pendingSelection,
);
}
}
customElements.define("ntv-grid", NotiveGridElement);
export default ((...args: any[]): NotiveGridElement =>
(h as any)["ntv-grid"](...args)) as CreateElement<NotiveGridElement>;
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