Merge branch 'qtruntime'

10 files changed, 722 insertions, 200 deletions

diff --git a/src/declarative/qml/qml.pri b/src/declarative/qml/qml.pri
index f09a944..1e4e234 100644
--- a/src/declarative/qml/qml.pri
+++ b/src/declarative/qml/qml.pri
@@ -7,7 +7,6 @@ SOURCES += \
     $$PWD/qmlexpression.cpp \
     $$PWD/qmlbinding.cpp \
     $$PWD/qmlmetaproperty.cpp \
-    $$PWD/qmlmoduleplugin.cpp \
     $$PWD/qmlcomponent.cpp \
     $$PWD/qmlcontext.cpp \
     $$PWD/qmlcustomparser.cpp \
@@ -52,6 +51,8 @@ SOURCES += \
     $$PWD/qmlworkerscript.cpp \
     $$PWD/qmlimageprovider.cpp \
     $$PWD/qmlnetworkaccessmanagerfactory.cpp \
+    $$PWD/qmldirparser.cpp \
+    $$PWD/qmlextensionplugin.cpp \
     $$PWD/qmllist.cpp 
 
 HEADERS += \
@@ -63,7 +64,6 @@ HEADERS += \
     $$PWD/qmlbinding_p.h \
     $$PWD/qmlbinding_p_p.h \
     $$PWD/qmlmetaproperty.h \
-    $$PWD/qmlmoduleplugin.h \
     $$PWD/qmlcomponent.h \
     $$PWD/qmlcomponent_p.h \
     $$PWD/qmlcustomparser_p.h \
@@ -122,7 +122,11 @@ HEADERS += \
     $$PWD/qmlscriptclass_p.h \
     $$PWD/qmlguard_p.h \
     $$PWD/qmlimageprovider.h \
-    $$PWD/qmlnetworkaccessmanagerfactory.h
+    $$PWD/qmlnetworkaccessmanagerfactory.h \
+    $$PWD/qmldirparser_p.h \
+    $$PWD/qmlextensioninterface.h \
+    $$PWD/qmlextensionplugin.h
+
 QT += sql
 include(parser/parser.pri)
 include(rewriter/rewriter.pri)
diff --git a/src/declarative/qml/qmldirparser.cpp b/src/declarative/qml/qmldirparser.cpp
new file mode 100644
index 0000000..60beb72
--- /dev/null
+++ b/src/declarative/qml/qmldirparser.cpp
@@ -0,0 +1,220 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmldirparser_p.h"
+#include "qmlerror.h"
+
+#include <QtCore/QTextStream>
+#include <QtCore/QtDebug>
+
+QT_BEGIN_NAMESPACE
+
+QmlDirParser::QmlDirParser()
+    : _isParsed(false)
+{
+}
+
+QmlDirParser::~QmlDirParser()
+{
+}
+
+QUrl QmlDirParser::url() const
+{
+    return _url;
+}
+
+void QmlDirParser::setUrl(const QUrl &url)
+{
+    _url = url;
+}
+
+QString QmlDirParser::source() const
+{
+    return _source;
+}
+
+void QmlDirParser::setSource(const QString &source)
+{
+    _isParsed = false;
+    _source = source;
+}
+
+bool QmlDirParser::isParsed() const
+{
+    return _isParsed;
+}
+
+bool QmlDirParser::parse()
+{
+    if (_isParsed)
+        return true;
+
+    _isParsed = true;
+    _errors.clear();
+    _plugins.clear();
+    _components.clear();
+
+    QTextStream stream(&_source);
+    int lineNumber = 0;
+
+    forever {
+        ++lineNumber;
+
+        const QString line = stream.readLine();
+        if (line.isNull())
+            break;
+
+        QString sections[3];
+        int sectionCount = 0;
+
+        int index = 0;
+        const int length = line.length();
+
+        while (index != length) {
+            const QChar ch = line.at(index);
+
+            if (ch.isSpace()) {
+                do { ++index; }
+                while (index != length && line.at(index).isSpace());
+
+            } else if (ch == QLatin1Char('#')) {
+                // recognized a comment
+                break;
+
+            } else {
+                const int start = index;
+
+                do { ++index; }
+                while (index != length && !line.at(index).isSpace());
+
+                const QString lexeme = line.mid(start, index - start);
+
+                if (sectionCount >= 3) {
+                    reportError(lineNumber, start, QLatin1String("unexpected token"));
+
+                } else {
+                    sections[sectionCount++] = lexeme;
+                }
+            }
+        }
+
+        if (sectionCount == 0) {
+            continue; // no sections, no party.
+
+        } else if (sections[0] == QLatin1String("plugin")) {
+            if (sectionCount < 2) {
+                reportError(lineNumber, -1,
+                            QString::fromUtf8("plugin directive requires 2 arguments, but %1 were provided").arg(sectionCount + 1));
+
+                continue;
+            }
+
+            const Plugin entry(sections[1], sections[2]);
+
+            _plugins.append(entry);
+
+        } else if (sectionCount == 3) {
+            const QString &version = sections[1];
+            const int dotIndex = version.indexOf(QLatin1Char('.'));
+
+            if (dotIndex == -1) {
+                qWarning() << "expected '.'"; // ### use reportError
+
+            } else if (version.indexOf(QLatin1Char('.'), dotIndex + 1) != -1) {
+                qWarning() << "unexpected '.'"; // ### use reportError
+
+            } else {
+                bool validVersionNumber = false;
+                const int majorVersion = version.left(dotIndex).toInt(&validVersionNumber);
+
+                if (validVersionNumber) {
+                    const int minorVersion = version.mid(dotIndex + 1).toInt(&validVersionNumber);
+
+                    if (validVersionNumber) {
+                        const Component entry(sections[0], sections[2], majorVersion, minorVersion);
+
+                        _components.append(entry);
+                    }
+                }
+            }
+        } else {
+             // ### use reportError
+            qWarning() << "a component declaration requires 3 arguments, but" << (sectionCount + 1) << "were provided";
+        }
+    }
+
+    return hasError();
+}
+
+void QmlDirParser::reportError(int line, int column, const QString &description)
+{
+    QmlError error;
+    error.setUrl(_url);
+    error.setLine(line);
+    error.setColumn(column);
+    error.setDescription(description);
+    _errors.append(error);
+}
+
+bool QmlDirParser::hasError() const
+{
+    if (! _errors.isEmpty())
+        return true;
+
+    return false;
+}
+
+QList<QmlError> QmlDirParser::errors() const
+{
+    return _errors;
+}
+
+QList<QmlDirParser::Plugin> QmlDirParser::plugins() const
+{
+    return _plugins;
+}
+
+QList<QmlDirParser::Component> QmlDirParser::components() const
+{
+    return _components;
+}
+
+QT_END_NAMESPACE
diff --git a/src/declarative/qml/qmldirparser_p.h b/src/declarative/qml/qmldirparser_p.h
new file mode 100644
index 0000000..c58c03f
--- /dev/null
+++ b/src/declarative/qml/qmldirparser_p.h
@@ -0,0 +1,125 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLDIRPARSER_P_H
+#define QMLDIRPARSER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/QUrl>
+#include <QtCore/QHash>
+
+QT_BEGIN_NAMESPACE
+
+class QmlError;
+
+class QmlDirParser
+{
+    Q_DISABLE_COPY(QmlDirParser)
+
+public:
+    QmlDirParser();
+    ~QmlDirParser();
+
+    QUrl url() const;
+    void setUrl(const QUrl &url);
+
+    QString source() const;
+    void setSource(const QString &source);
+
+    bool isParsed() const;
+    bool parse();
+
+    bool hasError() const;
+    QList<QmlError> errors() const;
+
+    struct Plugin
+    {
+        Plugin() {}
+
+        Plugin(const QString &name, const QString &path)
+            : name(name), path(path) {}
+
+        QString name;
+        QString path;
+    };
+
+    struct Component
+    {
+        Component()
+            : majorVersion(0), minorVersion(0) {}
+
+        Component(const QString &typeName, const QString &fileName, int majorVersion, int minorVersion)
+            : typeName(typeName), fileName(fileName), majorVersion(majorVersion), minorVersion(minorVersion) {}
+
+        QString typeName;
+        QString fileName;
+        int majorVersion;
+        int minorVersion;
+    };
+
+    QList<Component> components() const;
+    QList<Plugin> plugins() const;
+
+private:
+    void reportError(int line, int column, const QString &message);
+
+private:
+    QList<QmlError> _errors;
+    QUrl _url;
+    QString _source;
+    QList<Component> _components;
+    QList<Plugin> _plugins;
+    unsigned _isParsed: 1;
+};
+
+QT_END_NAMESPACE
+
+#endif // QMLDIRPARSER_P_H
diff --git a/src/declarative/qml/qmlengine.cpp b/src/declarative/qml/qmlengine.cpp
index 2460f52..c7e1e16 100644
--- a/src/declarative/qml/qmlengine.cpp
+++ b/src/declarative/qml/qmlengine.cpp
@@ -50,7 +50,6 @@
 #include "qmlexpression.h"
 #include "qmlcomponent.h"
 #include "qmlmetaproperty_p.h"
-#include "qmlmoduleplugin.h"
 #include "qmlbinding_p_p.h"
 #include "qmlvme_p.h"
 #include "qmlenginedebug_p.h"
@@ -66,6 +65,8 @@
 #include "qmlscriptclass_p.h"
 #include "qmlnetworkaccessmanagerfactory.h"
 #include "qmlimageprovider.h"
+#include "qmldirparser_p.h"
+#include "qmlextensioninterface.h"
 #include "qmllist_p.h"
 
 #include <qfxperf_p_p.h>
@@ -82,6 +83,7 @@
 #include <QDebug>
 #include <QMetaObject>
 #include <QStack>
+#include <QPluginLoader>
 #include <QtCore/qlibraryinfo.h>
 #include <QtCore/qthreadstorage.h>
 #include <QtCore/qthread.h>
@@ -94,7 +96,6 @@
 #include <QGraphicsObject>
 #include <QtCore/qcryptographichash.h>
 
-#include <private/qfactoryloader_p.h>
 #include <private/qobject_p.h>
 #include <private/qscriptdeclarativeclass_p.h>
 
@@ -156,6 +157,21 @@ QmlEnginePrivate::QmlEnginePrivate(QmlEngine *e)
     }
     globalClass = new QmlGlobalScriptClass(&scriptEngine);
     fileImportPath.append(QLibraryInfo::location(QLibraryInfo::DataPath)+QDir::separator()+QLatin1String("qml"));
+
+    // env import paths
+    QByteArray envImportPath = qgetenv("QML_IMPORT_PATH");
+    if (!envImportPath.isEmpty()) {
+#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
+        QLatin1Char pathSep(';');
+#else
+        QLatin1Char pathSep(':');
+#endif
+        foreach (const QString &path, QString::fromLatin1(envImportPath).split(pathSep, QString::SkipEmptyParts)) {
+            QString canonicalPath = QDir(path).canonicalPath();
+            if (!canonicalPath.isEmpty() && !environmentImportPath.contains(canonicalPath))
+                environmentImportPath.append(canonicalPath);
+        }
+    }
 }
 
 QUrl QmlScriptEngine::resolvedUrl(QScriptContext *context, const QUrl& url)
@@ -1235,7 +1251,6 @@ struct QmlEnginePrivate::ImportedNamespace {
     QList<int> majversions;
     QList<int> minversions;
     QList<bool> isLibrary;
-    QList<bool> isBuiltin; // Types provided by C++ code (including plugins)
     QList<QString> qmlDirContent;
 
     bool find(const QByteArray& type, int *vmajor, int *vminor, QmlType** type_return, QUrl* url_return) const
@@ -1244,23 +1259,23 @@ struct QmlEnginePrivate::ImportedNamespace {
             int vmaj = majversions.at(i);
             int vmin = minversions.at(i);
 
-            if (isBuiltin.at(i)) {
-                QByteArray qt = uris.at(i).toUtf8();
-                qt += '/';
-                qt += type;
-                if (qmlImportTrace())
-                    qDebug() << "Look in" << qt;
-                QmlType *t = QmlMetaType::qmlType(qt,vmaj,vmin);
+            QByteArray qt = uris.at(i).toUtf8();
+            qt += '/';
+            qt += type;
+
+            if (qmlImportTrace())
+                qDebug() << "Look in" << qt;
+            QmlType *t = QmlMetaType::qmlType(qt,vmaj,vmin);
+            if (t) {
                 if (vmajor) *vmajor = vmaj;
                 if (vminor) *vminor = vmin;
-                if (t) {
-                    if (qmlImportTrace())
-                        qDebug() << "Found" << qt;
-                    if (type_return)
-                        *type_return = t;
-                    return true;
-                }
+                if (qmlImportTrace())
+                    qDebug() << "Found" << qt;
+                if (type_return)
+                    *type_return = t;
+                return true;
             }
+
             QUrl url = QUrl(urls.at(i) + QLatin1Char('/') + QString::fromUtf8(type) + QLatin1String(".qml"));
             QString qmldircontent = qmlDirContent.at(i);
             if (vmaj>=0 || !qmldircontent.isEmpty()) {
@@ -1271,27 +1286,25 @@ struct QmlEnginePrivate::ImportedNamespace {
                         qmldircontent = QString::fromUtf8(qmldir.readAll());
                     }
                 }
-                QString typespace = QString::fromUtf8(type)+QLatin1Char(' ');
-                QStringList lines = qmldircontent.split(QLatin1Char('\n'));
-                foreach (QString line, lines) {
-                    if (line.isEmpty() || line.at(0) == QLatin1Char('#'))
-                        continue;
-                    if (line.startsWith(typespace)) {
-                        int space1 = line.indexOf(QLatin1Char(' '));
-                        int space2 = space1 >=0 ? line.indexOf(QLatin1Char(' '),space1+1) : -1;
-                        QString mapversions = line.mid(space1+1,space2<0?line.length()-space1-1:space2-space1-1);
-                        int dot = mapversions.indexOf(QLatin1Char('.'));
-                        int mapvmaj = mapversions.left(dot).toInt();
-                        if (mapvmaj<=vmaj) {
-                            if (mapvmaj<vmaj || vmin >= mapversions.mid(dot+1).toInt()) {
-                                QStringRef mapfile = space2<0 ? QStringRef() : line.midRef(space2+1,line.length()-space2-1);
-                                if (url_return)
-                                    *url_return = url.resolved(QUrl(mapfile.toString()));
-                                return true;
-                            }
+
+                const QString typeName = QString::fromUtf8(type);
+
+                QmlDirParser qmldirParser;
+                qmldirParser.setUrl(url);
+                qmldirParser.setSource(qmldircontent);
+                qmldirParser.parse();
+
+                foreach (const QmlDirParser::Component &c, qmldirParser.components()) { // ### TODO: cache the components
+                    if (c.majorVersion < vmaj || (c.majorVersion == vmaj && vmin >= c.minorVersion)) {
+                        if (c.typeName == typeName) {
+                            if (url_return)
+                                *url_return = url.resolved(QUrl(c.fileName));
+
+                            return true;
                         }
                     }
                 }
+
             } else {
                 // XXX search non-files too! (eg. zip files, see QT-524)
                 QFileInfo f(toLocalFileOrQrc(url));
@@ -1306,9 +1319,6 @@ struct QmlEnginePrivate::ImportedNamespace {
     }
 };
 
-Q_GLOBAL_STATIC_WITH_ARGS(QFactoryLoader, loader,
-    (QmlModuleFactoryInterface_iid, QLatin1String("/qmlmodules")))
-
 class QmlImportsPrivate {
 public:
     QmlImportsPrivate() : ref(1)
@@ -1321,7 +1331,9 @@ public:
             delete s;
     }
 
-    bool add(const QUrl& base, const QString& qmldircontent, const QString& uri, const QString& prefix, int vmaj, int vmin, QmlScriptParser::Import::Type importType, const QStringList& importPath)
+    QSet<QString> qmlDirFilesForWhichPluginsHaveBeenLoaded;
+
+    bool add(const QUrl& base, const QString& qmldircontent, const QString& uri, const QString& prefix, int vmaj, int vmin, QmlScriptParser::Import::Type importType, const QStringList& importPath, QmlEngine *engine)
     {
         QmlEnginePrivate::ImportedNamespace *s;
         if (prefix.isEmpty()) {
@@ -1332,39 +1344,63 @@ public:
                 set.insert(prefix,(s=new QmlEnginePrivate::ImportedNamespace));
         }
         QString url = uri;
-        bool isbuiltin = false;
         if (importType == QmlScriptParser::Import::Library) {
-            url.replace(QLatin1Char('.'),QLatin1Char('/'));
+            url.replace(QLatin1Char('.'), QLatin1Char('/'));
             bool found = false;
-            foreach (QString p, importPath) {
-                QString dir = p+QLatin1Char('/')+url;
+            QString content;
+            QString dir;            
+
+            // user import paths
+            QStringList paths;
+
+            // base..
+            paths += QFileInfo(base.toLocalFile()).path();
+            paths += importPath;
+            paths += QmlEnginePrivate::get(engine)->environmentImportPath;
+
+            foreach (const QString &p, paths) {
+                dir = p+QLatin1Char('/')+url;
                 QFileInfo fi(dir+QLatin1String("/qmldir"));
+                const QString absoluteFilePath = fi.absoluteFilePath();
+
                 if (fi.isFile()) {
-                    url = QUrl::fromLocalFile(fi.absolutePath()).toString();
                     found = true;
+
+                    url = QUrl::fromLocalFile(fi.absolutePath()).toString();
+
+                    QFile file(absoluteFilePath);
+                    if (file.open(QFile::ReadOnly))
+                        content = QString::fromUtf8(file.readAll());
+
+                    if (! qmlDirFilesForWhichPluginsHaveBeenLoaded.contains(absoluteFilePath)) {
+                        qmlDirFilesForWhichPluginsHaveBeenLoaded.insert(absoluteFilePath);
+
+                        QmlDirParser qmldirParser;
+                        qmldirParser.setSource(content);
+                        qmldirParser.parse();
+
+                        foreach (const QmlDirParser::Plugin &plugin, qmldirParser.plugins()) {
+                            QString resolvedFilePath = QmlEnginePrivate::get(engine)->resolvePlugin(dir + QDir::separator() + plugin.path,
+                                                                                                    plugin.name);
+
+                            if (!resolvedFilePath.isEmpty())
+                                engine->importExtension(resolvedFilePath, uri);
+                        }
+                    }
+
                     break;
                 }
             }
-            if (!found) {
-                // XXX assume it is a built-in type qualifier
-                isbuiltin = true;
-            }
-            QFactoryLoader *l = loader();
-            QmlModuleFactoryInterface *factory =
-                qobject_cast<QmlModuleFactoryInterface*>(l->instance(uri));
-            if (factory) {
-                factory->defineModuleOnce(uri);
-                isbuiltin = true;
-            }
+
         } else {
             url = base.resolved(QUrl(url)).toString();
         }
+
         s->uris.prepend(uri);
         s->urls.prepend(url);
         s->majversions.prepend(vmaj);
         s->minversions.prepend(vmin);
         s->isLibrary.prepend(importType == QmlScriptParser::Import::Library);
-        s->isBuiltin.prepend(isbuiltin);
         s->qmlDirContent.prepend(qmldircontent);
         return true;
     }
@@ -1387,10 +1423,11 @@ public:
         if (s) {
             if (s->find(unqualifiedtype,vmajor,vminor,type_return,url_return))
                 return true;
-            if (s->urls.count() == 1 && !s->isBuiltin[0] && !s->isLibrary[0] && url_return) {
+            if (s->urls.count() == 1 && !s->isLibrary[0] && url_return) {
                 *url_return = QUrl(s->urls[0]+QLatin1Char('/')).resolved(QUrl(QString::fromUtf8(unqualifiedtype) + QLatin1String(".qml")));
                 return true;
             }
+
         }
         if (url_return) {
             *url_return = base.resolved(QUrl(QString::fromUtf8(type + ".qml")));
@@ -1451,9 +1488,6 @@ static QmlTypeNameCache *cacheForNamespace(QmlEngine *engine, const QmlEnginePri
     QList<QmlType *> types = QmlMetaType::qmlTypes();
 
     for (int ii = 0; ii < set.uris.count(); ++ii) {
-        if (!set.isBuiltin.at(ii))
-            continue;
-
         QByteArray base = set.uris.at(ii).toUtf8() + '/';
         int major = set.majversions.at(ii);
         int minor = set.minversions.at(ii);
@@ -1552,6 +1586,24 @@ void QmlEngine::addImportPath(const QString& path)
 }
 
 /*!
+  Imports the given \a extension into this QmlEngine.  Returns
+  true if the extension was successfully imported.
+
+  \sa QmlExtensionInterface
+*/
+bool QmlEngine::importExtension(const QString &fileName, const QString &uri)
+{
+    QPluginLoader loader(fileName);
+
+    if (QmlExtensionInterface *iface = qobject_cast<QmlExtensionInterface *>(loader.instance())) {
+        iface->initialize(this, uri.toUtf8().constData());
+        return true;
+    }
+
+    return false;
+}
+
+/*!
   \property QmlEngine::offlineStoragePath
   \brief the directory for storing offline user data
 
@@ -1580,6 +1632,87 @@ QString QmlEngine::offlineStoragePath() const
     return d->scriptEngine.offlineStoragePath;
 }
 
+/*!
+  \internal
+
+  Returns the result of the merge of \a baseName with \a dir, \a suffixes, and \a prefix.
+ */
+QString QmlEnginePrivate::resolvePlugin(const QDir &dir, const QString &baseName,
+                                        const QStringList &suffixes,
+                                        const QString &prefix)
+{
+    foreach (const QString &suffix, suffixes) {
+        QString pluginFileName = prefix;
+
+        pluginFileName += baseName;
+        pluginFileName += QLatin1Char('.');
+        pluginFileName += suffix;
+
+        QFileInfo fileInfo(dir, pluginFileName);
+
+        if (fileInfo.exists())
+            return fileInfo.absoluteFilePath();
+    }
+
+    return QString();
+}
+
+/*!
+  \internal
+
+  Returns the result of the merge of \a baseName with \a dir and the platform suffix.
+
+  \table
+  \header \i Platform \i Valid suffixes
+  \row \i Windows     \i \c .dll
+  \row \i Unix/Linux  \i \c .so
+  \row \i AIX  \i \c .a
+  \row \i HP-UX       \i \c .sl, \c .so (HP-UXi)
+  \row \i Mac OS X    \i \c .dylib, \c .bundle, \c .so
+  \row \i Symbian     \i \c .dll
+  \endtable
+
+  Version number on unix are ignored.
+*/
+QString QmlEnginePrivate::resolvePlugin(const QDir &dir, const QString &baseName)
+{
+#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
+    return resolvePlugin(dir, baseName, QStringList(QLatin1String("dll")));
+#elif defined(Q_OS_SYMBIAN)
+    return resolvePlugin(dir, baseName, QStringList() << QLatin1String("dll") << QLatin1String("qtplugin"));
+#else
+
+# if defined(Q_OS_DARWIN)
+
+    return resolvePlugin(dir, baseName, QStringList() << QLatin1String("dylib") << QLatin1String("so") << QLatin1String("bundle"),
+                         QLatin1String("lib"));
+# else  // Generic Unix
+    QStringList validSuffixList;
+
+#  if defined(Q_OS_HPUX)
+/*
+    See "HP-UX Linker and Libraries User's Guide", section "Link-time Differences between PA-RISC and IPF":
+    "In PA-RISC (PA-32 and PA-64) shared libraries are suffixed with .sl. In IPF (32-bit and 64-bit),
+    the shared libraries are suffixed with .so. For compatibility, the IPF linker also supports the .sl suffix."
+ */
+    validSuffixList << QLatin1String("sl");
+#   if defined __ia64
+    validSuffixList << QLatin1String("so");
+#   endif
+#  elif defined(Q_OS_AIX)
+    validSuffixList << QLatin1String("a") << QLatin1String("so");
+#  elif defined(Q_OS_UNIX)
+    validSuffixList << QLatin1String("so");
+#  endif
+
+    // Examples of valid library names:
+    //  libfoo.so
+
+    return resolvePlugin(dir, baseName, validSuffixList, QLatin1String("lib"));
+# endif
+
+#endif
+}
 
 /*!
   \internal
@@ -1597,7 +1730,8 @@ QString QmlEngine::offlineStoragePath() const
 */
 bool QmlEnginePrivate::addToImport(Imports* imports, const QString& qmldircontent, const QString& uri, const QString& prefix, int vmaj, int vmin, QmlScriptParser::Import::Type importType) const
 {
-    bool ok = imports->d->add(imports->d->base,qmldircontent,uri,prefix,vmaj,vmin,importType,fileImportPath);
+    QmlEngine *engine = QmlEnginePrivate::get(const_cast<QmlEnginePrivate *>(this));
+    bool ok = imports->d->add(imports->d->base,qmldircontent,uri,prefix,vmaj,vmin,importType,fileImportPath, engine);
     if (qmlImportTrace())
         qDebug() << "QmlEngine::addToImport(" << imports << uri << prefix << vmaj << '.' << vmin << (importType==QmlScriptParser::Import::Library? "Library" : "File") << ": " << ok;
     return ok;
diff --git a/src/declarative/qml/qmlengine.h b/src/declarative/qml/qmlengine.h
index 64d0b9d..dd2012a 100644
--- a/src/declarative/qml/qmlengine.h
+++ b/src/declarative/qml/qmlengine.h
@@ -78,6 +78,7 @@ public:
     void clearComponentCache();
 
     void addImportPath(const QString& dir);
+    bool importExtension(const QString &fileName, const QString &uri);
 
     void setNetworkAccessManagerFactory(QmlNetworkAccessManagerFactory *);
     QmlNetworkAccessManagerFactory *networkAccessManagerFactory() const;
diff --git a/src/declarative/qml/qmlengine_p.h b/src/declarative/qml/qmlengine_p.h
index 3fe7991..85c5fbe 100644
--- a/src/declarative/qml/qmlengine_p.h
+++ b/src/declarative/qml/qmlengine_p.h
@@ -104,6 +104,7 @@ class QmlCleanup;
 class QmlDelayedError;
 class QmlWorkerScriptEngine;
 class QmlGlobalScriptClass;
+class QDir;
 
 class QmlScriptEngine : public QScriptEngine
 {
@@ -263,6 +264,15 @@ public:
         QmlImportsPrivate *d;
     };
 
+
+    QStringList environmentImportPath;
+
+    QString resolvePlugin(const QDir &dir, const QString &baseName,
+                          const QStringList &suffixes,
+                          const QString &prefix = QString());
+    QString resolvePlugin(const QDir &dir, const QString &baseName);
+
+
     bool addToImport(Imports*, const QString& qmlDirContent,const QString& uri, const QString& prefix, int vmaj, int vmin, QmlScriptParser::Import::Type importType) const;
     bool resolveType(const Imports&, const QByteArray& type,
                      QmlType** type_return, QUrl* url_return,
diff --git a/src/declarative/qml/qmlextensioninterface.h b/src/declarative/qml/qmlextensioninterface.h
new file mode 100644
index 0000000..b993e82
--- /dev/null
+++ b/src/declarative/qml/qmlextensioninterface.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLEXTENSIONINTERFACE_H
+#define QMLEXTENSIONINTERFACE_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class QmlEngine;
+
+struct Q_DECLARATIVE_EXPORT QmlExtensionInterface
+{
+    virtual void initialize(QmlEngine *engine, const char *uri) = 0;
+};
+
+Q_DECLARE_INTERFACE(QmlExtensionInterface, "com.trolltech.Qt.QmlExtensionInterface/1.0")
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMLEXTENSIONINTERFACE_H
diff --git a/src/declarative/qml/qmlextensionplugin.cpp b/src/declarative/qml/qmlextensionplugin.cpp
new file mode 100644
index 0000000..c1195d2
--- /dev/null
+++ b/src/declarative/qml/qmlextensionplugin.cpp
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmlextensionplugin.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \since 4.7
+    \class QmlExtensionPlugin
+    \brief The QmlExtensionPlugin class provides an abstract base for custom QML extension plugins.
+
+    \ingroup plugins
+
+    QmlExtensionPlugin is a plugin interface that makes it
+    possible to offer extensions that can be loaded dynamically into
+    applications using the QmlEngine class.
+
+    Writing a QML extension plugin is achieved by subclassing this
+    base class, reimplementing the pure virtual initialize()
+    function, and exporting the class using the Q_EXPORT_PLUGIN2()
+    macro. See \l {How to Create Qt Plugins} for details.
+
+    \sa QmlEngine::importExtension()
+*/
+
+/*!
+    \fn void QmlExtensionPlugin::initialize(QmlEngine *engine)
+
+    Initializes the extension specified in the given \a engine.
+*/
+
+/*!
+    Constructs a QML extension plugin with the given \a parent.
+
+    Note that this constructor is invoked automatically by the
+    Q_EXPORT_PLUGIN2() macro, so there is no need for calling it
+    explicitly.
+*/
+QmlExtensionPlugin::QmlExtensionPlugin(QObject *parent)
+    : QObject(parent)
+{
+}
+
+QmlExtensionPlugin::~QmlExtensionPlugin()
+{
+}
+
+QT_END_NAMESPACE
diff --git a/src/declarative/qml/qmlmoduleplugin.h b/src/declarative/qml/qmlextensionplugin.h
index b28f1ad..8cc64ad 100644
--- a/src/declarative/qml/qmlmoduleplugin.h
+++ b/src/declarative/qml/qmlextensionplugin.h
@@ -39,14 +39,12 @@
 **
 ****************************************************************************/
 
-#ifndef QMLMODULEPLUGIN_H
-#define QMLMODULEPLUGIN_H
+#ifndef QMLEXTENSIONPLUGIN_H
+#define QMLEXTENSIONPLUGIN_H
 
 #include <QtCore/qplugin.h>
-#include <QtCore/qfactoryinterface.h>
-#include <QtCore/qlist.h>
-#include <QtCore/qset.h>
-#include <QtCore/qbytearray.h>
+
+#include "qmlextensioninterface.h"
 
 QT_BEGIN_HEADER
 
@@ -54,33 +52,21 @@ QT_BEGIN_NAMESPACE
 
 QT_MODULE(Declarative)
 
-struct Q_DECLARATIVE_EXPORT QmlModuleFactoryInterface : public QFactoryInterface
-{
-    virtual void defineModuleOnce(const QString& uri) = 0;
-};
-
-#define QmlModuleFactoryInterface_iid "com.nokia.Qt.QmlModuleFactoryInterface"
+class QmlEngine;
 
-Q_DECLARE_INTERFACE(QmlModuleFactoryInterface, QmlModuleFactoryInterface_iid)
-
-
-class Q_DECLARATIVE_EXPORT QmlModulePlugin : public QObject, public QmlModuleFactoryInterface
+class Q_DECLARATIVE_EXPORT QmlExtensionPlugin : public QObject, public QmlExtensionInterface
 {
     Q_OBJECT
-    Q_INTERFACES(QmlModuleFactoryInterface:QFactoryInterface)
+    Q_INTERFACES(QmlExtensionInterface)
 public:
-    explicit QmlModulePlugin(QObject *parent = 0);
-    ~QmlModulePlugin();
-
-    virtual void defineModule(const QString& uri) = 0;
+    explicit QmlExtensionPlugin(QObject *parent = 0);
+    ~QmlExtensionPlugin();
 
-private:
-    void defineModuleOnce(const QString& uri);
-    QSet<QString> defined;
+    virtual void initialize(QmlEngine *engine, const char *uri) = 0;
 };
 
 QT_END_NAMESPACE
 
 QT_END_HEADER
 
-#endif // QMLMODULEPLUGIN_H
+#endif // QMLEXTENSIONPLUGIN_H
diff --git a/src/declarative/qml/qmlmoduleplugin.cpp b/src/declarative/qml/qmlmoduleplugin.cpp
deleted file mode 100644
index 8019805..0000000
--- a/src/declarative/qml/qmlmoduleplugin.cpp
+++ /dev/null
@@ -1,111 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtDeclarative module 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 Technology Preview License Agreement accompanying
-** this package.
-**
-** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qmlmoduleplugin.h"
-#include "qstringlist.h"
-
-QT_BEGIN_NAMESPACE
-
-/*!
-    \class QmlModulePlugin
-    \brief The QmlModulePlugin class provides an abstract base for custom QML module plugins.
-    \reentrant
-    \ingroup plugins
-
-    The QML module plugin is a simple plugin interface that makes it
-    easy to add custom QML modules that can be loaded dynamically
-    into applications.
-
-    Writing a QML module plugin is achieved by subclassing this base
-    class, reimplementing the pure virtual function keys(), and
-    exporting the class with the Q_EXPORT_PLUGIN2() macro. See \l{How
-    to Create Qt Plugins} for details.
-
-    The strings returned by keys() should be the list of URIs of modules
-    that the plugin registers.
-
-    The plugin should register QML types with qmlRegisterType() when the
-    defineModule() method is called.
-
-    See the example in \c{examples/declarative/plugins}.
-*/
-
-/*!
-    Constructs a QML module plugin with the given \a parent. This is
-    invoked automatically by the Q_EXPORT_PLUGIN2() macro.
-*/
-QmlModulePlugin::QmlModulePlugin(QObject *parent)
-    : QObject(parent)
-{
-}
-
-/*!
-    Destroys the QML module plugin.
-
-    You never have to call this explicitly. Qt destroys a plugin
-    automatically when it is no longer used.
-*/
-QmlModulePlugin::~QmlModulePlugin()
-{
-}
-
-/*!
-    \fn void QmlModulePlugin::defineModule(const QString& uri)
-
-    Subclasses must override this function to register types
-    of the module \a uri, which will be one of the strings returned by keys().
-
-    The plugin registers QML types with qmlRegisterType():
-
-    \code
-        qmlRegisterType<MyClass>("com.nokia.MyModule", 1, 0, "MyType", "MyClass");
-    \endcode
-*/
-
-void QmlModulePlugin::defineModuleOnce(const QString& uri)
-{ 
-    if (!defined.contains(uri)) {
-        defined += uri;
-        defineModule(uri);
-    }
-}
-
-QT_END_NAMESPACE