61 lines
1.8 KiB
TypeScript
61 lines
1.8 KiB
TypeScript
import { type Editor } from "./main";
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const handleResize = (canvas: HTMLCanvasElement) => {
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if (!canvas) return;
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canvas.width = window.innerWidth;
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canvas.height = window.innerHeight;
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const ctx = canvas.getContext("2d");
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const dpr = window.devicePixelRatio || 1;
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// Assuming the canvas takes up the whole window
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canvas.width = window.innerWidth * dpr;
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canvas.height = window.innerHeight * dpr;
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if (ctx) {
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ctx.scale(dpr, dpr);
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}
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};
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export const installWindowBehaviors = (
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app: Editor,
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window: Window,
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preventMultipleTabs: boolean = false
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) => {
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window.addEventListener("resize", () =>
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handleResize(app.interface.scope as HTMLCanvasElement)
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);
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window.addEventListener("resize", () =>
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handleResize(app.interface.feedback as HTMLCanvasElement)
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);
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window.addEventListener("beforeunload", () => {
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// @ts-ignore
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event.preventDefault();
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// Iterate over all local files and set the candidate to the committed
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app.currentFile().candidate = app.view.state.doc.toString();
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app.currentFile().committed = app.view.state.doc.toString();
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app.settings.saveApplicationToLocalStorage(app.universes, app.settings);
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app.clock.stop();
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return null;
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});
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if (preventMultipleTabs) {
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localStorage.openpages = Date.now();
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window.addEventListener(
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"storage",
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function (e) {
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if (e.key == "openpages") {
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// Listen if anybody else is opening the same page!
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localStorage.page_available = Date.now();
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}
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if (e.key == "page_available") {
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document.getElementById("all")!.classList.add("invisible");
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alert(
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"Topos is already opened in another tab. Close this tab now to prevent data loss."
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);
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}
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},
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false
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);
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}
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};
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