Add a simple start page with a search box pointing at the active

search engine. It has been created by Fernando Lemos and has some
modifications of mine:
1. It now uses engines from the user's collection.
2. It is translatable now.
3. It uses our SVG icon so that it is fully resizable.

Changes behind the scenes:
- It uses the window.arora interface that we will expose to the
  JavaScript scope for our custom pages. One of the methods is
  translate(), which is a wrapper for tr() function.
  Drawback: translatable strings need to be predeclared using the
  QT_TR_NOOP macro.
- Another object that is exposed is the current engine object. It is
  available under the window.arora.currentEngine interface. All
  properties that are declared using the Q_PROPERTY macro will be
  available as JS properties.

autotests/webpage/tst_webpage.cpp

@@ -51,6 +51,8 @@ private slots:
     void createWindow();
     void handleUnsupportedContent();
     void linkedResources();
+    void javaScriptObjects_data();
+    void javaScriptObjects();
 };
 
 // Subclass that exposes the protected functions.
@@ -337,6 +339,34 @@ void tst_WebPage::linkedResources()
     QCOMPARE(resources.at(3).href, QUrl("http://external.foo/search.xml"));
 }
 
+void tst_WebPage::javaScriptObjects_data()
+{
+    QTest::addColumn<QUrl>("url");
+    QTest::addColumn<bool>("windowExternal");
+    QTest::addColumn<bool>("windowArora");
+
+    QTest::newRow("qrc:/notfound.html") << QUrl("qrc:/notfound.html") << true << false;
+    QTest::newRow("qrc:/startpage.html") << QUrl("qrc:/startpage.html") << true << true;
+}
+
+void tst_WebPage::javaScriptObjects()
+{
+    QFETCH(QUrl, url);
+    QFETCH(bool, windowExternal);
+    QFETCH(bool, windowArora);
+
+    SubWebPage page;
+    QSignalSpy spy(&page, SIGNAL(loadFinished(bool)));
+    page.mainFrame()->load(url);
+    QTRY_COMPARE(spy.count(), 1);
+
+    QVariant windowExternalVariant = page.mainFrame()->evaluateJavaScript(QLatin1String("window.external"));
+    QVariant windowAroraVariant = page.mainFrame()->evaluateJavaScript(QLatin1String("window.arora"));
+
+    QCOMPARE(windowExternal, !windowExternalVariant.isNull());
+    QCOMPARE(windowArora, !windowAroraVariant.isNull());
+}
+
 QTEST_MAIN(tst_WebPage)
 #include "tst_webpage.moc"
 

src/browsermainwindow.cpp

@@ -1328,7 +1328,7 @@ void BrowserMainWindow::goHome()
 {
     QSettings settings;
     settings.beginGroup(QLatin1String("MainWindow"));
-    QString home = settings.value(QLatin1String("home"), QLatin1String("http://www.arora-browser.org")).toString();
+    QString home = settings.value(QLatin1String("home"), QLatin1String("about:home")).toString();
     tabWidget()->loadString(home);
 }
 

src/data/data.qrc

@@ -1,6 +1,7 @@
 <!DOCTYPE RCC><RCC version="1.0">
 <qresource>
     <file>128x128/arora.png</file>
+    <file>arora.svg</file>
     <file>defaultbookmarks.xbel</file>
     <file>fetchLinks.js</file>
     <file>../../AUTHORS</file>

src/htmls/htmls.qrc

@@ -1,6 +1,8 @@
 <!DOCTYPE RCC><RCC version="1.0">
 <qresource>
-    <file>notfound.html</file>
     <file>dirlist.html</file>
+    <file>notfound.html</file>
+    <file>startpage.html</file>
+    <file>startpage.css</file>
 </qresource>
 </RCC>

src/htmls/startpage.css

@@ -0,0 +1,74 @@
+* {
+    margin: 0;
+    padding: 0;
+    font-family: "DejaVu Sans";
+}
+
+body {
+    background: -webkit-gradient(linear, left top, left bottom, from(#ccc), to(#fff), color-stop(0.5, #fff));
+    background-repeat: repeat-x;
+    margin-top: 200px;
+}
+
+#header, #search, #footer {
+    width: 500px;
+    margin: 10px auto;
+}
+
+#header, #search {
+    -webkit-border-radius: 0.8em;
+    padding: 25px;
+}
+
+#header {
+    background: -webkit-gradient(linear, left top, left bottom, from(#228), to(#668), color-stop(0.9, #66a));
+    height: 20px;
+}
+
+#header h1 {
+    display: inline;
+    font-size: 1.7em;
+    color: #fff;
+    font-weight: bold;
+}
+
+#header img {
+    display: inline;
+    float: right;
+    height: 150px;
+    margin-top: -80px;
+}
+
+#search {
+    background: -webkit-gradient(linear, left top, right top, from(#cdf), to(#cdf), color-stop(0.5, #eff));
+    height: 50px;
+    color: #000;
+    text-align: center;
+    padding-top: 40px !important;
+}
+
+#search fieldset {
+    border: 0;
+}
+
+#search input[type=text] {
+    width: 65%;
+}
+
+#search input[type=submit] {
+    width: 25%;
+}
+
+#footer {
+    text-align: center;
+    color: #999;
+}
+
+#footer a {
+    color: #555;
+    text-decoration: none;
+}
+
+#footer a:hover {
+    text-decoration: underline;
+}

src/htmls/startpage.html

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+<head>
+    <title></title>
+    <link rel="stylesheet" href="qrc:/startpage.css" type="text/css" />
+    <script type="text/javascript">
+        function update()
+        {
+            var searchEngine = window.arora.currentEngine;
+
+            document.title = window.arora.translate('Welcome to Arora!');
+            document.getElementById('headerTitle').innerHTML = window.arora.translate('Arora Start');
+            document.getElementById('searchButton').value = window.arora.translate('Search!');
+            document.getElementById('footer').innerHTML = window.arora.translate('Search results provided by') + ' '
+                                                          + searchEngine.name + ' | ' + '<a href="http://arora-browser.org/">'
+                                                          + window.arora.translate('About Arora') + '</a>';
+            document.getElementById('lineEdit').innerHTML = searchEngine.name;
+        }
+
+        function formSubmitted()
+        {
+            var string = lineEdit.value;
+
+            if (string.length == 0)
+                return;
+
+            var url = window.arora.searchUrl(string);
+            window.location.href = url;
+        }
+    </script>
+</head>
+<body onload="document.forms[0].lineEdit.select(); update();">
+    <div id="header">
+        <h1 id="headerTitle"></h1>
+        <img src="qrc:/arora.svg" />
+    </div>
+    <div id="search">
+        <form action="javascript:formSubmitted();">
+            <fieldset>
+                <input id="lineEdit" name="lineEdit" type="text" />
+                <input id="searchButton" type="submit" />
+            </fieldset>
+        </form>
+    </div>
+    <div id="footer"></div>
+</body>
+</html>

src/opensearch/opensearchengine.h

@@ -34,6 +34,8 @@ class OpenSearchEngine : public QObject
 {
     Q_OBJECT
 
+    Q_PROPERTY(QString name READ name)
+
 signals:
     void imageChanged();
     void suggestions(const QStringList &suggestions);

src/settings.cpp

@@ -135,7 +135,7 @@ void SettingsDialog::loadFromSettings()
 {
     QSettings settings;
     settings.beginGroup(QLatin1String("MainWindow"));
-    QString defaultHome = QLatin1String("http://www.arora-browser.org");
+    QString defaultHome = QLatin1String("about:home");
     homeLineEdit->setText(settings.value(QLatin1String("home"), defaultHome).toString());
     startupBehavior->setCurrentIndex(settings.value(QLatin1String("startupBehavior"), 0).toInt());
     settings.endGroup();

src/tabwidget.cpp

@@ -928,6 +928,10 @@ QUrl TabWidget::guessUrlFromString(const QString &string)
 {
     QUrl url = WebView::guessUrlFromString(string);
 
+    if (url.scheme() == QLatin1String("about")
+        && url.path() == QLatin1String("home"))
+        url = QUrl(QLatin1String("qrc:/startpage.html"));
+
     // QUrl::isValid() is too much tolerant.
     // We actually want to check if the url conforms to the RFC, which QUrl::isValid() doesn't state.
     if (!url.scheme().isEmpty() && (!url.host().isEmpty() || !url.path().isEmpty()))

src/webpage.cpp

@@ -24,6 +24,7 @@
 #include "downloadmanager.h"
 #include "historymanager.h"
 #include "networkaccessmanager.h"
+#include "opensearchengine.h"
 #include "opensearchmanager.h"
 #include "tabwidget.h"
 #include "toolbarsearch.h"
@@ -54,10 +55,42 @@ void JavaScriptExternalObject::AddSearchProvider(const QString &url)
     ToolbarSearch::openSearchManager()->addEngine(QUrl(url));
 }
 
+Q_DECLARE_METATYPE(OpenSearchEngine*)
+JavaScriptAroraObject::JavaScriptAroraObject(QObject *parent)
+    : QObject(parent)
+{
+    static const char *translations[] = {
+        QT_TR_NOOP("Welcome to Arora!"),
+        QT_TR_NOOP("Arora Start"),
+        QT_TR_NOOP("Search!"),
+        QT_TR_NOOP("Search results provided by"),
+        QT_TR_NOOP("About Arora")
+    };
+    Q_UNUSED(translations);
+
+    qRegisterMetaType<OpenSearchEngine*>("OpenSearchEngine*");
+}
+
+QString JavaScriptAroraObject::translate(const QString &string)
+{
+    return trUtf8(string.toUtf8().constData());
+}
+
+QObject *JavaScriptAroraObject::currentEngine() const
+{
+    return ToolbarSearch::openSearchManager()->currentEngine();
+}
+
+QString JavaScriptAroraObject::searchUrl(const QString &string) const
+{
+    return QString::fromUtf8(ToolbarSearch::openSearchManager()->currentEngine()->searchUrl(string).toEncoded());
+}
+
 WebPage::WebPage(QObject *parent)
     : QWebPage(parent)
     , m_openTargetBlankLinksIn(TabWidget::NewWindow)
-    , m_javaScriptBinding(0)
+    , m_javaScriptExternalObject(0)
+    , m_javaScriptAroraObject(0)
 {
     setPluginFactory(webPluginFactory());
     setNetworkAccessManager(BrowserApplication::networkAccessManager());
@@ -139,17 +172,25 @@ QList<WebPageLinkedResource> WebPage::linkedResources(const QString &relation)
 
 void WebPage::addExternalBinding(QWebFrame *frame)
 {
-    if (!m_javaScriptBinding)
-        m_javaScriptBinding = new JavaScriptExternalObject(this);
+    if (!m_javaScriptExternalObject)
+        m_javaScriptExternalObject = new JavaScriptExternalObject(this);
 
     if (frame == 0) { // called from QWebFrame::javaScriptWindowObjectCleared
         frame = qobject_cast<QWebFrame*>(sender());
+
+        if (frame->url().scheme() == QLatin1String("qrc")
+            && frame->url().path() == QLatin1String("/startpage.html")) {
+
+            if (!m_javaScriptAroraObject)
+                m_javaScriptAroraObject = new JavaScriptAroraObject(this);
+
+            frame->addToJavaScriptWindowObject(QLatin1String("arora"), m_javaScriptAroraObject);
+        }
     } else { // called from QWebPage::frameCreated
         connect(frame, SIGNAL(javaScriptWindowObjectCleared()),
                 this, SLOT(addExternalBinding()));
     }
-    frame->addToJavaScriptWindowObject(QLatin1String("external"),
-           m_javaScriptBinding);
+    frame->addToJavaScriptWindowObject(QLatin1String("external"), m_javaScriptExternalObject);
 }
 
 bool WebPage::acceptNavigationRequest(QWebFrame *frame, const QNetworkRequest &request,

src/webpage.h

@@ -34,6 +34,7 @@ class WebPageLinkedResource
     QString title;
 };
 
+class OpenSearchEngine;
 class QNetworkReply;
 class WebPluginFactory;
 // See https://developer.mozilla.org/en/adding_search_engines_from_web_pages
@@ -48,6 +49,21 @@ public slots:
     void AddSearchProvider(const QString &url);
 };
 
+class JavaScriptAroraObject : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QObject* currentEngine READ currentEngine)
+
+public:
+    JavaScriptAroraObject(QObject *parent = 0);
+
+public slots:
+    QString translate(const QString &string);
+    QObject *currentEngine() const;
+    QString searchUrl(const QString &string) const;
+};
+
 class WebPage : public QWebPage
 {
     Q_OBJECT
@@ -76,7 +92,8 @@ protected slots:
     static WebPluginFactory *s_webPluginFactory;
     TabWidget::OpenUrlIn m_openTargetBlankLinksIn;
     QUrl m_requestedUrl;
-    JavaScriptExternalObject *m_javaScriptBinding;
+    JavaScriptExternalObject *m_javaScriptExternalObject;
+    JavaScriptAroraObject *m_javaScriptAroraObject;
 };
 
 #endif // WEBPAGE_H