pdfjs-dist/lib/web/password_prompt.js

/**
 * @licstart The following is the entire license notice for the
 * JavaScript code in this page
 *
 * Copyright 2022 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @licend The above is the entire license notice for the
 * JavaScript code in this page
 */
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.PasswordPrompt = void 0;

var _pdf = require("../pdf");

class PasswordPrompt {
  #activeCapability = null;
  #updateCallback = null;
  #reason = null;

  constructor(options, overlayManager, l10n, isViewerEmbedded = false) {
    this.dialog = options.dialog;
    this.label = options.label;
    this.input = options.input;
    this.submitButton = options.submitButton;
    this.cancelButton = options.cancelButton;
    this.overlayManager = overlayManager;
    this.l10n = l10n;
    this._isViewerEmbedded = isViewerEmbedded;
    this.submitButton.addEventListener("click", this.#verify.bind(this));
    this.cancelButton.addEventListener("click", this.close.bind(this));
    this.input.addEventListener("keydown", e => {
      if (e.keyCode === 13) {
        this.#verify();
      }
    });
    this.overlayManager.register(this.dialog, true);
    this.dialog.addEventListener("close", this.#cancel.bind(this));
  }

  async open() {
    if (this.#activeCapability) {
      await this.#activeCapability.promise;
    }

    this.#activeCapability = (0, _pdf.createPromiseCapability)();

    try {
      await this.overlayManager.open(this.dialog);
    } catch (ex) {
      this.#activeCapability = null;
      throw ex;
    }

    const passwordIncorrect = this.#reason === _pdf.PasswordResponses.INCORRECT_PASSWORD;

    if (!this._isViewerEmbedded || passwordIncorrect) {
      this.input.focus();
    }

    this.label.textContent = await this.l10n.get(`password_${passwordIncorrect ? "invalid" : "label"}`);
  }

  async close() {
    if (this.overlayManager.active === this.dialog) {
      this.overlayManager.close(this.dialog);
    }
  }

  #verify() {
    const password = this.input.value;

    if (password?.length > 0) {
      this.#invokeCallback(password);
    }
  }

  #cancel() {
    this.#invokeCallback(new Error("PasswordPrompt cancelled."));
    this.#activeCapability.resolve();
  }

  #invokeCallback(password) {
    if (!this.#updateCallback) {
      return;
    }

    this.close();
    this.input.value = "";
    this.#updateCallback(password);
    this.#updateCallback = null;
  }

  async setUpdateCallback(updateCallback, reason) {
    if (this.#activeCapability) {
      await this.#activeCapability.promise;
    }

    this.#updateCallback = updateCallback;
    this.#reason = reason;
  }

}

exports.PasswordPrompt = PasswordPrompt;