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    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 QWebElement GoogleChat::document() const {

    84     return form.webView->page()->mainFrame()->documentElement();

    85 }

    86 

    87 void GoogleChat::adjustLoginButton() {

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

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

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

    91     form.loginButton->setEnabled(ok);

    92 }

    93 

    94 void GoogleChat::inputPassword() {

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

    96         form.passwordEdit->setFocus();

    97 }

    98 

    99 void GoogleChat::doLogin() {

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

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

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

   103     if (!ok)

   104         return;

   105 

   106     form.progressBar->setValue(0);

   107     form.progressBar->show();

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

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

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

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

   112 

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

   114 

   115     document().findFirst("#Email").setAttribute("value", userEmail);

   116     document().findFirst("#Passwd").setAttribute("value", password);

   117     document().findFirst("#gaia_loginform").evaluateJavaScript("this.submit();");

   118 

   119 }

   120 

   121 void GoogleChat::initialPage(bool ok) {

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

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

   124         return;

   125     }

   126 

   127     if (ok) {

   128         QWebElement email = document().findFirst("#Email");

   129         QWebElement passwd = document().findFirst("#Passwd");

   130         QWebElement loginForm = document().findFirst("#gaia_loginform");

   131         if (!email.isNull() && !passwd.isNull() && !loginForm.isNull()) {

   132             form.stackedWidget->setCurrentIndex(1);

   133             form.userNameEdit->setFocus();

   134             form.webView->disconnect();

   135             return;

   136         }

   137     }

   138 

   139     showError("SERVICE unavailable.");

   140 }

   141 

   142 void GoogleChat::hideElements()

   143 {

   144     document().findFirst(".footer-footer").removeFromDocument();

   145     document().findFirst(".title-bar-bg .title-bar").removeFromDocument();

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

   147 }

   148 

   149 void GoogleChat::loginPage(bool ok) {

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

   151     if (!ok) {

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

   153             return;

   154         showError("Service unavailable");

   155     } else {

   156         // check for any error message

   157 

   158         QWebElement  e = document().findFirst(".errormsg");

   159         if (e.isNull()) {

   160             form.stackedWidget->setCurrentIndex(2);

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

   162             return;

   163         }

   164 

   165        QString err = "Unknown login failure.";

   166        const QString errorMessage = e.toPlainText();

   167         if (!errorMessage.isEmpty()) {

   168             err = errorMessage;

   169             err = err.simplified();

   170         }

   171         showError(err);

   172     }

   173 }