1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the examples of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <QtGui>

    43 #include <QtWebKit>

    44 #include <QSslSocket>

    45 

    46 #include "googlechat.h"

    47 

    48 #define GOOGLECHAT_URL "http://talkgadget.google.com/talkgadget/m"

    49 

    50 GoogleChat::GoogleChat(): QWidget() {

    51     form.setupUi(this);

    52     setFixedSize(320, 480);

    53 

    54     form.userNameEdit->setFocus();

    55     connect(form.userNameEdit, SIGNAL(textChanged(QString)), SLOT(adjustLoginButton()));

    56     connect(form.userNameEdit, SIGNAL(returnPressed()), SLOT(inputPassword()));

    57 

    58     connect(form.passwordEdit, SIGNAL(textChanged(QString)), SLOT(adjustLoginButton()));

    59     connect(form.passwordEdit, SIGNAL(returnPressed()), SLOT(doLogin()));

    60 

    61     form.loginButton->setEnabled(false);

    62     connect(form.loginButton, SIGNAL(clicked()), SLOT(doLogin()));

    63 

    64     connect(form.webView, SIGNAL(loadFinished(bool)), SLOT(initialPage(bool)));

    65     connect(form.webView, SIGNAL(loadProgress(int)),

    66             form.progressBar, SLOT(setValue(int)));

    67     form.webView->setUrl((QUrl(GOOGLECHAT_URL)));

    68     form.webView->setContextMenuPolicy(Qt::PreventContextMenu);

    69 

    70     showStatus("Wait...");

    71 }

    72 

    73 void GoogleChat::showStatus(const QString &msg) {

    74     form.statusLabel->setText(msg);

    75     form.stackedWidget->setCurrentIndex(0);

    76 }

    77 

    78 void GoogleChat::showError(const QString &msg) {

    79     form.progressBar->hide();

    80     showStatus(QString("Error: %1").arg(msg));

    81 }

    82 

    83 QString GoogleChat::evalJS(const QString &js) {

    84     QWebFrame *frame = form.webView->page()->mainFrame();

    85     return frame->evaluateJavaScript(js).toString();

    86 }

    87 

    88 void GoogleChat::adjustLoginButton() {

    89     userName = form.userNameEdit->text();

    90     password = form.passwordEdit->text();

    91     bool ok = !userName.isEmpty() && !password.isEmpty();

    92     form.loginButton->setEnabled(ok);

    93 }

    94 

    95 void GoogleChat::inputPassword() {

    96     if (!form.userNameEdit->text().isEmpty())

    97         form.passwordEdit->setFocus();

    98 }

    99 

   100 void GoogleChat::doLogin() {

   101     userName = form.userNameEdit->text();

   102     password = form.passwordEdit->text();

   103     bool ok = !userName.isEmpty() && !password.isEmpty();

   104     if (!ok)

   105         return;

   106 

   107     form.progressBar->setValue(0);

   108     form.progressBar->show();

   109     connect(form.webView, SIGNAL(loadFinished(bool)), SLOT(loginPage(bool)));

   110     connect(form.webView, SIGNAL(loadProgress(int)),

   111             form.progressBar, SLOT(setValue(int)));

   112     showStatus("Logging in...");

   113 

   114     QString userEmail = userName + "@gmail.com";

   115     evalJS(QString("document.getElementById('Email').value = \"%1\";").arg(userEmail));

   116     evalJS(QString("document.getElementById('Passwd').value = \"%1\";").arg(password));

   117     evalJS("document.getElementById('gaia_loginform').submit();");

   118 }

   119 

   120 void GoogleChat::initialPage(bool ok) {

   121     if (!QSslSocket::supportsSsl()) {

   122         showError("This example requires SSL support.");

   123         return;

   124     }

   125 

   126     if (ok) {

   127         QString s1 = evalJS("document.getElementById('Email').name");

   128         QString s2 = evalJS("document.getElementById('Passwd').name");

   129         QString s3 = evalJS("document.getElementById('gaia_loginform').id");

   130         if (s1 == "Email" && s2 == "Passwd" && s3 == "gaia_loginform") {

   131             form.stackedWidget->setCurrentIndex(1);

   132             form.webView->disconnect();

   133             return;

   134         }

   135     }

   136 

   137     showError("SERVICE unavailable.");

   138 }

   139 

   140 void GoogleChat::hideElements()

   141 {

   142     evalJS("var e = document.getElementsByClassName('footer-footer')[0]; e.parentElement.removeChild(e)");

   143     evalJS("var e = document.getElementsByClassName('title-bar-bg title-bar')[0]; e.parentElement.removeChild(e)");

   144     QTimer::singleShot(2000, this, SLOT(hideElements()));

   145 }

   146 

   147 void GoogleChat::loginPage(bool ok) {

   148     QString location = form.webView->url().toString();

   149     if (!ok) {

   150         if (location.indexOf("CheckCookie"))

   151             return;

   152         showError("Service unavailable");

   153     } else {

   154         // check for any error message

   155         QString c = evalJS("document.getElementsByClassName('errormsg').length");

   156         if (c == "0") {

   157             form.stackedWidget->setCurrentIndex(2);

   158             QTimer::singleShot(500, this, SLOT(hideElements()));

   159             return;

   160         }

   161 

   162         QString err = "Unknown login failure.";

   163         if (c == "1") {

   164             err = evalJS("document.getElementsByClassName('errormsg')[0].textContent");

   165             err = err.simplified();

   166         }

   167         showError(err);

   168     }

   169 }