js-draw
Version:
Draw pictures using a pen, touchscreen, or mouse! JS-draw is a drawing library for JavaScript and TypeScript.
35 lines (34 loc) • 1.25 kB
JavaScript
;
// Allows the toolbar to register keyboard events.
// @packageDocumentation
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const BaseTool_1 = __importDefault(require("./BaseTool"));
class ToolbarShortcutHandler extends BaseTool_1.default {
constructor(editor) {
super(editor.notifier, editor.localization.changeTool);
this.listeners = new Set([]);
}
registerListener(listener) {
this.listeners.add(listener);
}
removeListener(listener) {
this.listeners.delete(listener);
}
onKeyPress(event) {
// TypeScript seems to automatically convert for of loops into for(init;check;update)
// loops (even with target set to es6). Thus, we cannot iterate directly through the
// set here.
// See https://stackoverflow.com/q/48886500
const listeners = Array.from(this.listeners.values());
for (const listener of listeners) {
if (listener(event)) {
return true;
}
}
return false;
}
}
exports.default = ToolbarShortcutHandler;