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childproxy.h
00001 /*
00002     Copyright (C) 2010  George Kiagiadakis <kiagiadakis.george@gmail.com>
00003 
00004     This library is free software; you can redistribute it and/or modify
00005     it under the terms of the GNU Lesser General Public License as published
00006     by the Free Software Foundation; either version 2.1 of the License, or
00007     (at your option) any later version.
00008 
00009     This program is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012     GNU Lesser General Public License for more details.
00013 
00014     You should have received a copy of the GNU Lesser General Public License
00015     along with this program.  If not, see <http://www.gnu.org/licenses/>.
00016 */
00017 #ifndef QGST_CHILDPROXY_H
00018 #define QGST_CHILDPROXY_H
00019 
00020 #include "object.h"
00021 
00022 namespace QGst {
00023 
00027 class QTGSTREAMER_EXPORT ChildProxy : public QGlib::Interface
00028 {
00029     QGST_WRAPPER(ChildProxy)
00030 public:
00031     uint childrenCount() const;
00032     ObjectPtr childByName(const char *name) const;
00033     ObjectPtr childByIndex(uint index) const;
00034 
00035     bool findChildProperty(const char *name, ObjectPtr *object, QGlib::ParamSpecPtr *paramSpec) const;
00036     QGlib::Value childProperty(const char *name) const;
00037     template <typename T> void setChildProperty(const char *name, const T & value);
00038 };
00039 
00040 template <typename T>
00041 void ChildProxy::setChildProperty(const char *name, const T & value)
00042 {
00043     QGlib::ParamSpecPtr param;
00044     ObjectPtr object;
00045     if (findChildProperty(name, &object, &param)) {
00046         QGlib::Value v;
00047         v.init(param->valueType());
00048         v.set<T>(value);
00049         object->setProperty(param->name(), value);
00050     }
00051 }
00052 
00053 }
00054 
00055 QGST_REGISTER_TYPE(QGst::ChildProxy)
00056 QGLIB_REGISTER_INTERFACE(QGst::ChildProxy)
00057 
00058 #endif // QGST_CHILDPROXY_H