Qt 4.8: storage.js Example File (webkit/webkit-guide/js/storage.js)

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# storage.js Example File

webkit/webkit-guide/js/storage.js

     /****************************************************************************
     **
     ** Copyright (C) 2015 The Qt Company Ltd.
     ** Contact: http://www.qt.io/licensing/
     **
     ** This file is part of the Qt WebKit module of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of The Qt Company Ltd nor the names of its
     **     contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
     **
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/
     var app = new Function();

     app.dbg = false;

     window.onload = function() {

         app.cred = document.querySelector('#cred');

         // open form:
         document.querySelector('#openform').addEventListener('mousedown', app.getInfo);
         // dismiss form:
         document.querySelector('#dismiss').addEventListener('mousedown', app.dismiss);

         // form validation:
         app.inputs = document.querySelectorAll('input:not([type="submit"])');
         for (var i = 0, l = app.inputs.length ; i < l ; i++ ) {
             app.inputs[i].addEventListener('blur', app.checkEdit);
         }

         // storage
         app.db_loc = window.localStorage;
         app.db_ses = window.sessionStorage;

         if (!!app.db_loc) {
             // no login info yet...
             if ( !app.db_loc.getItem('login') || !app.db_loc.getItem('password') ) app.getInfo();
         }
         else {
             alert("This application needs to run on a recent WebKit-based browser.");
         }

     };

     app.hint = function(str) {
         document.querySelector('body').className = str;
     };

     app.checkEdit = function(ev) {
         ev.currentTarget.className = 'validate';
     }

     app.getInfo = function(ev) {
         app.cred.className = 'show';
         app.inputs[0].value = app.db_loc.getItem('login');
         app.inputs[1].value = app.db_loc.getItem('password');
         app.inputs[2].value = app.db_ses.getItem('credit');
     }

     app.dismiss = function(ev) {
         app.db_loc.setItem('login', app.inputs[0].value);
         app.db_loc.setItem('password', app.inputs[1].value);
         app.db_ses.setItem('credit', app.inputs[2].value);
         ev.currentTarget.parentNode.className = 'hide';
     }