anki/ts/editor/editingArea.ts

116 lines
3.7 KiB
TypeScript

import type { Editable } from "./editable";
import { bridgeCommand } from "./lib";
import { onInput, onKey, onKeyUp } from "./inputHandlers";
import { onFocus, onBlur } from "./focusHandlers";
import { updateButtonState } from "./toolbar";
function onPaste(evt: ClipboardEvent): void {
bridgeCommand("paste");
evt.preventDefault();
}
function onCutOrCopy(): boolean {
bridgeCommand("cutOrCopy");
return true;
}
export class EditingArea extends HTMLDivElement {
editable: Editable;
baseStyle: HTMLStyleElement;
constructor() {
super();
this.attachShadow({ mode: "open" });
this.className = "field";
const rootStyle = document.createElement("link");
rootStyle.setAttribute("rel", "stylesheet");
rootStyle.setAttribute("href", "./_anki/css/editable.css");
this.shadowRoot!.appendChild(rootStyle);
this.baseStyle = document.createElement("style");
this.baseStyle.setAttribute("rel", "stylesheet");
this.shadowRoot!.appendChild(this.baseStyle);
this.editable = document.createElement("anki-editable") as Editable;
this.shadowRoot!.appendChild(this.editable);
}
get ord(): number {
return Number(this.getAttribute("ord"));
}
set fieldHTML(content: string) {
this.editable.fieldHTML = content;
}
get fieldHTML(): string {
return this.editable.fieldHTML;
}
connectedCallback(): void {
this.addEventListener("keydown", onKey);
this.addEventListener("keyup", onKeyUp);
this.addEventListener("input", onInput);
this.addEventListener("focus", onFocus);
this.addEventListener("blur", onBlur);
this.addEventListener("paste", onPaste);
this.addEventListener("copy", onCutOrCopy);
this.addEventListener("oncut", onCutOrCopy);
this.addEventListener("mouseup", updateButtonState);
const baseStyleSheet = this.baseStyle.sheet as CSSStyleSheet;
baseStyleSheet.insertRule("anki-editable {}", 0);
}
disconnectedCallback(): void {
this.removeEventListener("keydown", onKey);
this.removeEventListener("keyup", onKeyUp);
this.removeEventListener("input", onInput);
this.removeEventListener("focus", onFocus);
this.removeEventListener("blur", onBlur);
this.removeEventListener("paste", onPaste);
this.removeEventListener("copy", onCutOrCopy);
this.removeEventListener("oncut", onCutOrCopy);
this.removeEventListener("mouseup", updateButtonState);
}
initialize(color: string, content: string): void {
this.setBaseColor(color);
this.editable.fieldHTML = content;
}
setBaseColor(color: string): void {
const styleSheet = this.baseStyle.sheet as CSSStyleSheet;
const firstRule = styleSheet.cssRules[0] as CSSStyleRule;
firstRule.style.color = color;
}
setBaseStyling(fontFamily: string, fontSize: string, direction: string): void {
const styleSheet = this.baseStyle.sheet as CSSStyleSheet;
const firstRule = styleSheet.cssRules[0] as CSSStyleRule;
firstRule.style.fontFamily = fontFamily;
firstRule.style.fontSize = fontSize;
firstRule.style.direction = direction;
}
isRightToLeft(): boolean {
const styleSheet = this.baseStyle.sheet as CSSStyleSheet;
const firstRule = styleSheet.cssRules[0] as CSSStyleRule;
return firstRule.style.direction === "rtl";
}
getSelection(): Selection {
return this.shadowRoot!.getSelection()!;
}
focusEditable(): void {
this.editable.focus();
}
blurEditable(): void {
this.editable.blur();
}
}