html-pdf-chrome/dist/CompletionTriggers/Variable.js

HTML to PDF and image converter via Chrome/Chromium

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
exports.Variable = void 0;
const CompletionTrigger_1 = require("./CompletionTrigger");
/**
 * Waits for a variable to be true.
 *
 * @export
 * @class Variable
 * @extends {CompletionTrigger}
 */
class Variable extends CompletionTrigger_1.CompletionTrigger {
    /**
     * Creates an instance of the Variable CompletionTrigger.
     * @param {string} [variableName] the variable to listen on.
     *  Defaults to htmlPdfDone.
     * @param {number} [timeout] ms to wait until timing out.
     * @memberof Variable
     */
    constructor(variableName, timeout) {
        super(timeout);
        this.variableName = variableName;
    }
    async wait(client) {
        const { Runtime } = client;
        const varName = this.variableName || 'htmlPdfDone';
        return Runtime.evaluate({
            awaitPromise: true,
            expression: `
        new Promise((resolve, reject) => {
          // check if already set
          if (window['${varName}'] === true) {
            resolve();
            return;
          }
          Object.defineProperty(window, '${varName}', {
            set: (val) => { if (val === true) resolve(); }
          });
          setTimeout(() => reject('${this.timeoutMessage}'), ${this.timeout});
        })`,
        });
    }
}
exports.Variable = Variable;
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