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      1 /*
      2  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #include "config.h"
     22 #include "QtPlatformPlugin.h"
     23 
     24 #include "qwebkitplatformplugin.h"
     25 
     26 #include <QCoreApplication>
     27 #include <QDir>
     28 #include <QPluginLoader>
     29 
     30 namespace WebCore {
     31 
     32 bool QtPlatformPlugin::load(const QString& file)
     33 {
     34     m_loader.setFileName(file);
     35     if (!m_loader.load())
     36         return false;
     37 
     38     QObject* obj = m_loader.instance();
     39     if (obj) {
     40         m_plugin = qobject_cast<QWebKitPlatformPlugin*>(obj);
     41         if (m_plugin)
     42             return true;
     43     }
     44 
     45     m_loader.unload();
     46     return false;
     47 }
     48 
     49 bool QtPlatformPlugin::load()
     50 {
     51     const QLatin1String suffix("/webkit/");
     52     const QStringList paths = QCoreApplication::libraryPaths();
     53 
     54     for (int i = 0; i < paths.count(); ++i) {
     55         const QDir dir(paths[i] + suffix);
     56         if (!dir.exists())
     57             continue;
     58         const QStringList files = dir.entryList(QDir::Files);
     59         for (int j = 0; j < files.count(); ++j) {
     60             if (load(dir.absoluteFilePath(files.at(j))))
     61                 return true;
     62         }
     63     }
     64     return false;
     65 }
     66 
     67 QtPlatformPlugin::~QtPlatformPlugin()
     68 {
     69     m_loader.unload();
     70 }
     71 
     72 bool QtPlatformPlugin::loadStaticallyLinkedPlugin()
     73 {
     74     QObjectList objs = QPluginLoader::staticInstances();
     75     for (int i = 0; i < objs.size(); ++i) {
     76         m_plugin = qobject_cast<QWebKitPlatformPlugin*>(objs[i]);
     77         if (m_plugin)
     78             return true;
     79     }
     80     return false;
     81 }
     82 
     83 QWebKitPlatformPlugin* QtPlatformPlugin::plugin()
     84 {
     85     if (m_loaded)
     86         return m_plugin;
     87     m_loaded = true;
     88 
     89     if (loadStaticallyLinkedPlugin())
     90         return m_plugin;
     91 
     92     // Plugin path is stored in a static variable to avoid searching for the plugin
     93     // more then once.
     94     static QString pluginPath;
     95 
     96     if (pluginPath.isNull()) {
     97         if (load())
     98             pluginPath = m_loader.fileName();
     99     } else
    100         load(pluginPath);
    101 
    102     return m_plugin;
    103 }
    104 
    105 QWebSelectMethod* QtPlatformPlugin::createSelectInputMethod()
    106 {
    107     QWebKitPlatformPlugin* p = plugin();
    108     return p ? static_cast<QWebSelectMethod*>(p->createExtension(QWebKitPlatformPlugin::MultipleSelections)) : 0;
    109 }
    110 
    111 
    112 QWebNotificationPresenter* QtPlatformPlugin::createNotificationPresenter()
    113 {
    114     QWebKitPlatformPlugin* p = plugin();
    115     return p ? static_cast<QWebNotificationPresenter*>(p->createExtension(QWebKitPlatformPlugin::Notifications)) : 0;
    116 }
    117 
    118 QWebHapticFeedbackPlayer* QtPlatformPlugin::createHapticFeedbackPlayer()
    119 {
    120     QWebKitPlatformPlugin* p = plugin();
    121     return p ? static_cast<QWebHapticFeedbackPlayer*>(p->createExtension(QWebKitPlatformPlugin::Haptics)) : 0;
    122 }
    123 
    124 QWebTouchModifier* QtPlatformPlugin::createTouchModifier()
    125 {
    126     QWebKitPlatformPlugin* p = plugin();
    127     return p ? static_cast<QWebTouchModifier*>(p->createExtension(QWebKitPlatformPlugin::TouchInteraction)) : 0;
    128 }
    129 
    130 #if ENABLE(VIDEO) && USE(QT_MULTIMEDIA)
    131 QWebFullScreenVideoHandler* QtPlatformPlugin::createFullScreenVideoHandler()
    132 {
    133     QWebKitPlatformPlugin* p = plugin();
    134     return p ? static_cast<QWebFullScreenVideoHandler*>(p->createExtension(QWebKitPlatformPlugin::FullScreenVideoPlayer)) : 0;
    135 }
    136 #endif
    137 
    138 }
    139