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104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
/*=========================================================================
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Program: ParaView
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Module: $RCSfile$
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Copyright (c) 2005,2006 Sandia Corporation, Kitware Inc.
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All rights reserved.
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ParaView is a free software; you can redistribute it and/or modify it
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under the terms of the ParaView license version 1.2.
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See License_v1.2.txt for the full ParaView license.
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A copy of this license can be obtained by contacting
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Kitware Inc.
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28 Corporate Drive
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Clifton Park, NY 12065
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USA
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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========================================================================*/
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#ifndef pqInterfaceTracker_h
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#define pqInterfaceTracker_h
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#include <QObject>
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#include "pqCoreModule.h"
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class vtkObject;
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/// pqInterfaceTracker is used by ParaView components to locate
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/// interface-implementations. These implementations can be either those loaded
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/// from plugins or registered explicitly using addInterface/removeInterface API.
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/// In previous versions of ParaView, this role was performed by the
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/// pqPluginManager class itself.
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class PQCORE_EXPORT pqInterfaceTracker : public QObject
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{
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Q_OBJECT
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typedef QObject Superclass;
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public:
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pqInterfaceTracker(QObject* parent=0);
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virtual ~pqInterfaceTracker();
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/// Return all interfaces that have been loaded/registered.
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QObjectList interfaces() const
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{ return this->Interfaces + this->RegisteredInterfaces; }
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/// Returns all interfaces that have been loaded/registered that are of the
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/// requested type.
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template <class T>
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QList<T> interfaces() const
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{
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QList<T> list;
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QObjectList objList = this->interfaces();
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foreach (QObject* object, objList)
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{
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if (object && qobject_cast<T>(object))
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{
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list.push_back(qobject_cast<T>(object));
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}
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}
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return list;
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}
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/// add an extra interface.
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/// these interfaces are appended to the ones loaded from plugins
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void addInterface(QObject* iface);
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/// remove an extra interface
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void removeInterface(QObject* iface);
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/// initializes the tracker using existing plugins.
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void initialize();
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signals:
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/// fired every time an interface is registered either from a plugin on
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/// manually.
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void interfaceRegistered(QObject* iface);
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protected:
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/// Callback when a plugin is loaded. We locate and load any interafaces
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/// defined in the plugin.
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void onPluginLoaded(vtkObject*, unsigned long, void* calldata);
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protected:
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QObjectList Interfaces;
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QObjectList RegisteredInterfaces;
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unsigned long ObserverID;
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private:
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Q_DISABLE_COPY(pqInterfaceTracker)
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};
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#endif
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