Added Google Chat client as a new WebKit example

Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/examples/webkit/googlechat/googlechat.cpp b/examples/webkit/googlechat/googlechat.cpp
new file mode 100644
index 0000000..9ac2cd2
--- /dev/null
+++ b/examples/webkit/googlechat/googlechat.cpp
@@ -0,0 +1,163 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <QtWebKit>
+
+#include "googlechat.h"
+
+#define GOOGLECHAT_URL "http://talkgadget.google.com/talkgadget/m"
+
+GoogleChat::GoogleChat(): QWidget() {
+    form.setupUi(this);
+    setFixedSize(320, 480);
+
+    form.userNameEdit->setFocus();
+    connect(form.userNameEdit, SIGNAL(textChanged(QString)), SLOT(adjustLoginButton()));
+    connect(form.userNameEdit, SIGNAL(returnPressed()), SLOT(inputPassword()));
+
+    connect(form.passwordEdit, SIGNAL(textChanged(QString)), SLOT(adjustLoginButton()));
+    connect(form.passwordEdit, SIGNAL(returnPressed()), SLOT(doLogin()));
+
+    form.loginButton->setEnabled(false);
+    connect(form.loginButton, SIGNAL(clicked()), SLOT(doLogin()));
+
+    connect(form.webView, SIGNAL(loadFinished(bool)), SLOT(initialPage(bool)));
+    connect(form.webView, SIGNAL(loadProgress(int)),
+            form.progressBar, SLOT(setValue(int)));
+    form.webView->setUrl((QUrl(GOOGLECHAT_URL)));
+    form.webView->setContextMenuPolicy(Qt::PreventContextMenu);
+
+    showStatus("Wait...");
+}
+
+void GoogleChat::showStatus(const QString &msg) {
+    form.statusLabel->setText(msg);
+    form.stackedWidget->setCurrentIndex(0);
+}
+
+void GoogleChat::showError(const QString &msg) {
+    form.progressBar->hide();
+    showStatus(QString("Error: %1").arg(msg));
+}
+
+QString GoogleChat::evalJS(const QString &js) {
+    QWebFrame *frame = form.webView->page()->mainFrame();
+    return frame->evaluateJavaScript(js).toString();
+}
+
+void GoogleChat::adjustLoginButton() {
+    userName = form.userNameEdit->text();
+    password = form.passwordEdit->text();
+    bool ok = !userName.isEmpty() && !password.isEmpty();
+    form.loginButton->setEnabled(ok);
+}
+
+void GoogleChat::inputPassword() {
+    if (!form.userNameEdit->text().isEmpty())
+        form.passwordEdit->setFocus();
+}
+
+void GoogleChat::doLogin() {
+    userName = form.userNameEdit->text();
+    password = form.passwordEdit->text();
+    bool ok = !userName.isEmpty() && !password.isEmpty();
+    if (!ok)
+        return;
+
+    form.progressBar->setValue(0);
+    form.progressBar->show();
+    connect(form.webView, SIGNAL(loadFinished(bool)), SLOT(loginPage(bool)));
+    connect(form.webView, SIGNAL(loadProgress(int)),
+            form.progressBar, SLOT(setValue(int)));
+    showStatus("Logging in...");
+
+    QString userEmail = userName + "@gmail.com";
+    evalJS(QString("document.getElementById('Email').value = \"%1\";").arg(userEmail));
+    evalJS(QString("document.getElementById('Passwd').value = \"%1\";").arg(password));
+    evalJS("document.getElementById('gaia_loginform').submit();");
+}
+
+void GoogleChat::initialPage(bool ok) {
+    if (ok) {
+        QString s1 = evalJS("document.getElementById('Email').name");
+        QString s2 = evalJS("document.getElementById('Passwd').name");
+        QString s3 = evalJS("document.getElementById('gaia_loginform').id");
+        if (s1 == "Email" && s2 == "Passwd" && s3 == "gaia_loginform") {
+            form.stackedWidget->setCurrentIndex(1);
+            form.webView->disconnect();
+            return;
+        }
+    }
+
+    showError("SERVICE unavailable.");
+}
+
+void GoogleChat::hideElements()
+{
+    evalJS("var e = document.getElementsByClassName('footer-footer')[0]; e.parentElement.removeChild(e)");
+    evalJS("var e = document.getElementsByClassName('title-bar-bg title-bar')[0]; e.parentElement.removeChild(e)");
+    QTimer::singleShot(2000, this, SLOT(hideElements()));
+}
+
+void GoogleChat::loginPage(bool ok) {
+    QString location = form.webView->url().toString();
+    if (!ok) {
+        if (location.indexOf("CheckCookie"))
+            return;
+        showError("Service unavailable");
+    } else {
+        // check for any error message
+        QString c = evalJS("document.getElementsByClassName('errormsg').length");
+        if (c == "0") {
+            form.stackedWidget->setCurrentIndex(2);
+            QTimer::singleShot(500, this, SLOT(hideElements()));
+            return;
+        }
+
+        QString err = "Unknown login failure.";
+        if (c == "1") {
+            err = evalJS("document.getElementsByClassName('errormsg')[0].textContent");
+            err = err.simplified();
+        }
+        showError(err);
+    }
+}