pdf.js/web/password_prompt.js
2019-05-11 14:27:21 +02:00

106 lines
3.3 KiB
JavaScript

/* Copyright 2012 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.
*/
import { NullL10n } from './ui_utils';
import { PasswordResponses } from 'pdfjs-lib';
/**
* @typedef {Object} PasswordPromptOptions
* @property {string} overlayName - Name of the overlay for the overlay manager.
* @property {HTMLDivElement} container - Div container for the overlay.
* @property {HTMLParagraphElement} label - Label containing instructions for
* entering the password.
* @property {HTMLInputElement} input - Input field for entering the password.
* @property {HTMLButtonElement} submitButton - Button for submitting the
* password.
* @property {HTMLButtonElement} cancelButton - Button for cancelling password
* entry.
*/
class PasswordPrompt {
/**
* @param {PasswordPromptOptions} options
* @param {OverlayManager} overlayManager - Manager for the viewer overlays.
* @param {IL10n} l10n - Localization service.
*/
constructor(options, overlayManager, l10n = NullL10n) {
this.overlayName = options.overlayName;
this.container = options.container;
this.label = options.label;
this.input = options.input;
this.submitButton = options.submitButton;
this.cancelButton = options.cancelButton;
this.overlayManager = overlayManager;
this.l10n = l10n;
this.updateCallback = null;
this.reason = null;
// Attach the event listeners.
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) { // Enter key
this.verify();
}
});
this.overlayManager.register(this.overlayName, this.container,
this.close.bind(this), true);
}
open() {
this.overlayManager.open(this.overlayName).then(() => {
this.input.focus();
let promptString;
if (this.reason === PasswordResponses.INCORRECT_PASSWORD) {
promptString = this.l10n.get('password_invalid', null,
'Invalid password. Please try again.');
} else {
promptString = this.l10n.get('password_label', null,
'Enter the password to open this PDF file.');
}
promptString.then((msg) => {
this.label.textContent = msg;
});
});
}
close() {
this.overlayManager.close(this.overlayName).then(() => {
this.input.value = '';
});
}
verify() {
let password = this.input.value;
if (password && password.length > 0) {
this.close();
this.updateCallback(password);
}
}
setUpdateCallback(updateCallback, reason) {
this.updateCallback = updateCallback;
this.reason = reason;
}
}
export {
PasswordPrompt,
};