86 lines
2.9 KiB
JavaScript
86 lines
2.9 KiB
JavaScript
const defaultBrush = `
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-- This is your brush.
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-- Try playing around with the numbers,
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-- and see what happens!
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stroke 8 #000 (vec 0 0)
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`.trim();
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export class BrushEditor extends HTMLElement {
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constructor() {
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super();
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}
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connectedCallback() {
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this.classList.add("rkgk-panel");
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this.textArea = this.appendChild(document.createElement("textarea"));
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this.textArea.classList.add("text-area");
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this.textArea.value = localStorage.getItem("rkgk.brushEditor.code") ?? defaultBrush;
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this.textArea.spellcheck = false;
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this.textArea.rows = 1;
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this.textArea.addEventListener("input", () => {
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this.#resizeTextArea();
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localStorage.setItem("rkgk.brushEditor.code", this.code);
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this.dispatchEvent(
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Object.assign(new Event(".codeChanged"), {
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newCode: this.code,
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}),
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);
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});
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requestAnimationFrame(() => this.#resizeTextArea());
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document.fonts.addEventListener("loadingdone", () => this.#resizeTextArea());
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new ResizeObserver(() => this.#resizeTextArea()).observe(this);
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this.errorHeader = this.appendChild(document.createElement("h1"));
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this.errorHeader.classList.add("error-header");
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this.errorArea = this.appendChild(document.createElement("pre"));
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this.errorArea.classList.add("errors");
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}
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#resizeTextArea() {
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this.textArea.style.height = "";
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this.textArea.style.height = `${this.textArea.scrollHeight}px`;
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}
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get code() {
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return this.textArea.value;
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}
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resetErrors() {
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this.errorHeader.textContent = "";
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this.errorArea.textContent = "";
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}
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renderHakuResult(phase, result) {
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this.resetErrors();
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if (result.status != "error") return;
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this.errorHeader.textContent = `${phase} failed`;
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if (result.errorKind == "diagnostics") {
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// This is kind of wooden; I'd prefer if the error spans were rendered inline in text,
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// but I haven't integrated anything for syntax highlighting yet that would let me
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// do that.
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this.errorArea.textContent = result.diagnostics
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.map(
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(diagnostic) => `${diagnostic.start}..${diagnostic.end}: ${diagnostic.message}`,
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)
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.join("\n");
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} else if (result.errorKind == "plain") {
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this.errorHeader.textContent = result.message;
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} else if (result.errorKind == "exception") {
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// TODO: This should show a stack trace.
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this.errorArea.textContent = `an exception occurred: ${result.message}`;
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} else {
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console.warn(`unknown error kind: ${result.errorKind}`);
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this.errorHeader.textContent = "(unknown error kind)";
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}
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}
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}
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customElements.define("rkgk-brush-editor", BrushEditor);
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