Equalizer  1.4.1
removeWindow.h
00001 
00002 /* Copyright (c) 2010, Stefan Eilemann <eile@eyescale.ch> 
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions are met:
00006  *
00007  * Redistributions of source code must retain the above copyright notice, this
00008  * list of conditions and the following disclaimer. Redistributions in binary
00009  * form must reproduce the above copyright notice, this list of conditions and
00010  * the following disclaimer in the documentation and/or other materials provided
00011  * with the distribution. Neither the name of Eyescale Software GmbH nor the
00012  * names of its contributors may be used to endorse or promote products derived
00013  * from this software without specific prior written permission.
00014  *
00015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
00021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
00023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
00024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
00025  * POSSIBILITY OF SUCH DAMAGE.
00026  */
00027 
00028 #ifndef EQ_ADMIN_REMOVE_WINDOW_H
00029 #define EQ_ADMIN_REMOVE_WINDOW_H
00030 
00031 #include "findPipe.h"
00032 
00033 #include <eq/admin/base.h>
00034 
00035 namespace eqAdmin
00036 {
00037 namespace
00038 {
00039 class FindChannelSegments : public eq::admin::ConfigVisitor
00040 {
00041 public:
00042     FindChannelSegments( eq::admin::Channel* channel ) : _channel( channel ) {}
00043     virtual ~FindChannelSegments() {}
00044 
00045     virtual eq::admin::VisitorResult visit( eq::admin::Segment* segment )
00046         {
00047             if( segment->getChannel() == _channel )
00048                 _segments.push_back( segment );
00049             return eq::admin::TRAVERSE_CONTINUE;
00050         }
00051 
00052     const eq::admin::Segments& getResult() const { return _segments; }
00053 
00054 private:
00055     eq::admin::Channel* const _channel; 
00056     eq::admin::Segments _segments;
00057 };
00058 
00059 class FindCanvasLayouts : public eq::admin::ConfigVisitor
00060 {
00061 public:
00062     FindCanvasLayouts( const eq::admin::Canvas* canvas )
00063             : _canvas( canvas ), _layout( 0 ) {}
00064     virtual ~FindCanvasLayouts() {}
00065 
00066     virtual eq::admin::VisitorResult visitPre( eq::admin::Canvas* canvas )
00067         {
00068             if( canvas == _canvas && !_layout )
00069             {
00070                 const eq::admin::Layouts& layouts = canvas->getLayouts();
00071                 eq::admin::Config* config = canvas->getConfig();
00072                 for( eq::admin::Layouts::const_iterator i = layouts.begin();
00073                      i != layouts.end(); ++i )
00074                 {
00075                     _layout = *i;
00076                     if( _layout &&
00077                         config->accept(*this) == eq::admin::TRAVERSE_CONTINUE )
00078                     {
00079                         _layouts.push_back( _layout );
00080                     }
00081                 }
00082                 _layout = 0;
00083                 return eq::admin::TRAVERSE_TERMINATE;
00084             }
00085             else if( canvas != _canvas && _layout )
00086             {
00087                 const eq::admin::Layouts& layouts = canvas->getLayouts();
00088                 if( stde::find( layouts, _layout ) != layouts.end( ))
00089                     return eq::admin::TRAVERSE_TERMINATE; // layout used by this canvas
00090             }
00091             return eq::admin::TRAVERSE_CONTINUE;
00092         }
00093 
00094     const eq::admin::Layouts& getResult() const { return _layouts; } 
00095 
00096 private:
00097     const eq::admin::Canvas* const _canvas;
00098     eq::admin::Layout* _layout;
00099     eq::admin::Layouts _layouts;
00100 };
00101 
00102 class FindLayoutObservers : public eq::admin::ConfigVisitor
00103 {
00104 public:
00105     FindLayoutObservers( const eq::admin::Layout* layout )
00106             : _layout( layout ), _observer( 0 ) {}
00107     virtual ~FindLayoutObservers() {}
00108 
00109     virtual eq::admin::VisitorResult visit( eq::admin::View* view )
00110         {
00111             if( view->getLayout() == _layout && !_observer )
00112             {
00113                 eq::admin::Config* config = view->getConfig();
00114                 _observer = view->getObserver();
00115                 if( _observer &&
00116                     config->accept(*this) == eq::admin::TRAVERSE_CONTINUE )
00117                 {
00118                     _observers.push_back( _observer );
00119                     view->setObserver( 0 ); // observer will be deleted
00120                 }
00121                 _observer = 0;
00122                 return eq::admin::TRAVERSE_TERMINATE;
00123             }
00124             else if( view->getLayout() != _layout && _observer )
00125             {
00126                 if( _observer == view->getObserver( ))
00127                     return eq::admin::TRAVERSE_TERMINATE; // used by layout
00128             }
00129             return eq::admin::TRAVERSE_CONTINUE;
00130         }
00131 
00132     const eq::admin::Observers& getResult() const { return _observers; } 
00133 
00134 private:
00135     const eq::admin::Layout* const _layout;
00136     eq::admin::Observer* _observer;
00137     eq::admin::Observers _observers;
00138 };
00139 
00140 }
00141 
00142 inline bool removeWindow( eq::admin::ServerPtr server )
00143 {
00144     if( !server )
00145        return false;
00146 
00147     // Find first pipe...
00148     eq::admin::Pipe* pipe = findPipe( server );
00149     if( !pipe )
00150        return false;
00151 
00152     const eq::admin::Windows& windows = pipe->getWindows();
00153     if( windows.size() < 2 )
00154         return false;
00155 
00156     // Remove last window (->channels->segment->canvas->layout->view)
00157     eq::admin::Window* window = windows.back();
00158     eq::admin::Config* config = pipe->getConfig();
00159 
00160     const eq::admin::Channels& channels = window->getChannels();
00161     for( eq::admin::Channels::const_iterator i = channels.begin();
00162          i != channels.end(); ++i )
00163     {
00164         // delete dependent segments
00165         eq::admin::Channel* channel = *i;
00166         FindChannelSegments channelSegments( channel );
00167         config->accept( channelSegments );
00168         const eq::admin::Segments& segments = channelSegments.getResult();
00169 
00170         for( eq::admin::Segments::const_iterator j = segments.begin();
00171              j != segments.end(); ++j )
00172         {
00173             eq::admin::Segment* segment = *j;
00174             eq::admin::Canvas* canvas = segment->getCanvas();
00175             delete segment;
00176             
00177             // delete now-empty canvases
00178             if( !canvas->getSegments().empty( ))
00179                 continue;
00180 
00181             // delete now-empty layouts
00182             FindCanvasLayouts canvasLayouts( canvas );
00183             config->accept( canvasLayouts );
00184             const eq::admin::Layouts& layouts = canvasLayouts.getResult();
00185             for( eq::admin::Layouts::const_iterator k = layouts.begin();
00186                  k != layouts.end(); ++k )
00187             {
00188                 eq::admin::Layout* layout = *k;
00189                 FindLayoutObservers layoutObservers( layout );
00190                 config->accept( layoutObservers );
00191                 eq::admin::Observers observers = layoutObservers.getResult();
00192                 stde::usort( observers );
00193 
00194                 for( eq::admin::Observers::const_iterator l = observers.begin();
00195                      l != observers.end(); ++l )
00196                 {
00197                     delete *l;
00198                 }
00199                 delete layout;
00200             }
00201             delete canvas;
00202         }
00203     }
00204 
00205     delete window;
00206     config->commit();
00207     return true;
00208 }
00209 
00210 }
00211 #endif // EQ_ADMIN_REMOVE_WINDOW_H
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