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/////////////////////////////////////////////////////////////////////////////
// Name: dllwidget.cpp
// Purpose: Dynamically loadable C++ widget for wxPython
// Author: Vaclav Slavik
// Created: 2001/12/03
// RCS-ID: $Id$
// Copyright: (c) 2001 Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/defs.h"
#include "wx/dynlib.h"
#include "wx/sizer.h"
#include "dllwidget.h"
IMPLEMENT_ABSTRACT_CLASS(wxDllWidget, wxPanel)
wxDllWidget::wxDllWidget(wxWindow *parent,
wxWindowID id,
const wxString& dllName, const wxString& className,
const wxPoint& pos, const wxSize& size,
long style)
: wxPanel(parent, id, pos, size, wxTAB_TRAVERSAL | wxNO_BORDER,
className + wxT("_container")),
m_widget(NULL), m_lib(NULL), m_controlAdded(false)
{
SetBackgroundColour(wxColour(255, 0, 255));
if ( !!className )
LoadWidget(dllName, className, style);
}
wxDllWidget::~wxDllWidget()
{
UnloadWidget();
}
void wxDllWidget::AddChild(wxWindowBase *child)
{
wxASSERT_MSG( !m_controlAdded, wxT("Couldn't load two widgets into one container!") );
wxPanel::AddChild(child);
m_controlAdded = true;
wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
sizer->Add((wxWindow*)child, 1, wxEXPAND);
SetSizer(sizer);
Layout();
}
wxString wxDllWidget::GetDllExt()
{
return wxDllLoader::GetDllExt();
}
typedef WXDLLEXPORT bool (*DLL_WidgetFactory_t)(const wxString& className,
wxWindow *parent,
long style,
wxWindow **classInst,
wxSendCommandFunc *cmdFunc);
bool wxDllWidget::LoadWidget(const wxString& dll, const wxString& className,
long style)
{
UnloadWidget();
// Load the dynamic library
m_lib = new wxDynamicLibrary(dll);
if ( !m_lib->IsLoaded() )
{
delete m_lib;
m_lib = NULL;
return false;
}
DLL_WidgetFactory_t factory;
factory = (DLL_WidgetFactory_t) m_lib->GetSymbol(wxT("DLL_WidgetFactory"));
if ( factory == NULL)
{
delete m_lib;
m_lib = NULL;
return false;
}
if ( !factory(className, this, style, &m_widget, &m_cmdFunc) )
{
delete m_widget;
delete m_lib;
m_lib = NULL;
m_widget = NULL;
return false;
}
return true;
}
void wxDllWidget::UnloadWidget()
{
if ( m_widget )
{
DestroyChildren();
m_widget = NULL;
delete m_lib;
m_lib = NULL;
}
}
int wxDllWidget::SendCommand(int cmd, const wxString& param)
{
wxASSERT_MSG( m_widget && m_cmdFunc, wxT("Sending command to not loaded widget!"));
return m_cmdFunc(m_widget, cmd, param);
}
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