Chris@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     Sonic Visualiser
Chris@0:     An audio file viewer and annotation editor.
Chris@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@0:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@0:     This program is free software; you can redistribute it and/or
Chris@0:     modify it under the terms of the GNU General Public License as
Chris@0:     published by the Free Software Foundation; either version 2 of the
Chris@0:     License, or (at your option) any later version.  See the file
Chris@0:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "Document.h"
Chris@0: 
Chris@1: #include "data/model/WaveFileModel.h"
Chris@55: #include "data/model/WritableWaveFileModel.h"
Chris@55: #include "data/model/DenseThreeDimensionalModel.h"
Chris@1: #include "layer/Layer.h"
Chris@0: #include "base/CommandHistory.h"
Chris@0: #include "base/Command.h"
Chris@1: #include "view/View.h"
Chris@0: #include "base/PlayParameterRepository.h"
Chris@0: #include "base/PlayParameters.h"
Chris@0: #include "transform/TransformFactory.h"
Chris@0: #include <iostream>
Chris@0: 
Chris@0: //!!! still need to handle command history, documentRestored/documentModified
Chris@0: 
Chris@0: Document::Document() :
Chris@0:     m_mainModel(0)
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: Document::~Document()
Chris@0: {
Chris@0:     //!!! Document should really own the command history.  atm we
Chris@0:     //still refer to it in various places that don't have access to
Chris@0:     //the document, be nice to fix that
Chris@0: 
Chris@0: //    std::cerr << "\n\nDocument::~Document: about to clear command history" << std::endl;
Chris@0:     CommandHistory::getInstance()->clear();
Chris@0:     
Chris@0: //    std::cerr << "Document::~Document: about to delete layers" << std::endl;
Chris@0:     while (!m_layers.empty()) {
Chris@0: 	deleteLayer(*m_layers.begin(), true);
Chris@0:     }
Chris@0: 
Chris@0:     if (!m_models.empty()) {
Chris@0: 	std::cerr << "Document::~Document: WARNING: " 
Chris@0: 		  << m_models.size() << " model(s) still remain -- "
Chris@0: 		  << "should have been garbage collected when deleting layers"
Chris@0: 		  << std::endl;
Chris@0: 	while (!m_models.empty()) {
Chris@0: 	    if (m_models.begin()->first == m_mainModel) {
Chris@0: 		// just in case!
Chris@0: 		std::cerr << "Document::~Document: WARNING: Main model is also"
Chris@0: 			  << " in models list!" << std::endl;
Chris@0: 	    } else {
Chris@0: 		emit modelAboutToBeDeleted(m_models.begin()->first);
Chris@0: 		delete m_models.begin()->first;
Chris@0: 	    }
Chris@0: 	    m_models.erase(m_models.begin());
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0: //    std::cerr << "Document::~Document: About to get rid of main model"
Chris@0: //	      << std::endl;
Chris@0:     emit modelAboutToBeDeleted(m_mainModel);
Chris@0:     emit mainModelChanged(0);
Chris@0:     delete m_mainModel;
Chris@0: 
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createLayer(LayerFactory::LayerType type)
Chris@0: {
Chris@0:     Layer *newLayer = LayerFactory::getInstance()->createLayer(type);
Chris@0:     if (!newLayer) return 0;
Chris@0: 
Chris@0:     newLayer->setObjectName(getUniqueLayerName(newLayer->objectName()));
Chris@0: 
Chris@0:     m_layers.insert(newLayer);
Chris@0:     emit layerAdded(newLayer);
Chris@0: 
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createMainModelLayer(LayerFactory::LayerType type)
Chris@0: {
Chris@0:     Layer *newLayer = createLayer(type);
Chris@0:     if (!newLayer) return 0;
Chris@0:     setModel(newLayer, m_mainModel);
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createImportedLayer(Model *model)
Chris@0: {
Chris@0:     LayerFactory::LayerTypeSet types =
Chris@0: 	LayerFactory::getInstance()->getValidLayerTypes(model);
Chris@0: 
Chris@0:     if (types.empty()) {
Chris@0: 	std::cerr << "WARNING: Document::importLayer: no valid display layer for model" << std::endl;
Chris@0: 	return 0;
Chris@0:     }
Chris@0: 
Chris@0:     //!!! for now, just use the first suitable layer type
Chris@0:     LayerFactory::LayerType type = *types.begin();
Chris@0: 
Chris@0:     Layer *newLayer = LayerFactory::getInstance()->createLayer(type);
Chris@0:     if (!newLayer) return 0;
Chris@0: 
Chris@0:     newLayer->setObjectName(getUniqueLayerName(newLayer->objectName()));
Chris@0: 
Chris@0:     addImportedModel(model);
Chris@0:     setModel(newLayer, model);
Chris@0: 
Chris@0:     //!!! and all channels
Chris@0:     setChannel(newLayer, -1);
Chris@0: 
Chris@0:     m_layers.insert(newLayer);
Chris@0:     emit layerAdded(newLayer);
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createEmptyLayer(LayerFactory::LayerType type)
Chris@0: {
Chris@0:     Model *newModel =
Chris@0: 	LayerFactory::getInstance()->createEmptyModel(type, m_mainModel);
Chris@0:     if (!newModel) return 0;
Chris@0: 
Chris@0:     Layer *newLayer = createLayer(type);
Chris@0:     if (!newLayer) {
Chris@0: 	delete newModel;
Chris@0: 	return 0;
Chris@0:     }
Chris@0: 
Chris@0:     addImportedModel(newModel);
Chris@0:     setModel(newLayer, newModel);
Chris@0: 
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createDerivedLayer(LayerFactory::LayerType type,
Chris@0: 			     TransformName transform)
Chris@0: {
Chris@0:     Layer *newLayer = createLayer(type);
Chris@0:     if (!newLayer) return 0;
Chris@0: 
Chris@0:     newLayer->setObjectName(getUniqueLayerName
Chris@0:                             (TransformFactory::getInstance()->
Chris@0:                              getTransformFriendlyName(transform)));
Chris@0: 
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: Layer *
Chris@0: Document::createDerivedLayer(TransformName transform,
Chris@0:                              Model *inputModel, 
Chris@27:                              const PluginTransform::ExecutionContext &context,
Chris@0:                              QString configurationXml)
Chris@0: {
Chris@55:     Model *newModel = addDerivedModel(transform, inputModel,
Chris@55:                                       context, configurationXml);
Chris@0:     if (!newModel) {
Chris@55:         // error already printed to stderr by addDerivedModel
Chris@0:         emit modelGenerationFailed(transform);
Chris@0:         return 0;
Chris@0:     }
Chris@0: 
Chris@0:     LayerFactory::LayerTypeSet types =
Chris@0: 	LayerFactory::getInstance()->getValidLayerTypes(newModel);
Chris@0: 
Chris@0:     if (types.empty()) {
Chris@0: 	std::cerr << "WARNING: Document::createLayerForTransform: no valid display layer for output of transform " << transform.toStdString() << std::endl;
Chris@0: 	delete newModel;
Chris@0: 	return 0;
Chris@0:     }
Chris@0: 
Chris@0:     //!!! for now, just use the first suitable layer type
Chris@0: 
Chris@0:     Layer *newLayer = createLayer(*types.begin());
Chris@0:     setModel(newLayer, newModel);
Chris@0: 
Chris@0:     //!!! We need to clone the model when adding the layer, so that it
Chris@0:     //can be edited without affecting other layers that are based on
Chris@0:     //the same model.  Unfortunately we can't just clone it now,
Chris@0:     //because it probably hasn't been completed yet -- the transform
Chris@0:     //runs in the background.  Maybe the transform has to handle
Chris@0:     //cloning and cacheing models itself.
Chris@0:     //
Chris@0:     // Once we do clone models here, of course, we'll have to avoid
Chris@0:     // leaking them too.
Chris@0:     //
Chris@0:     // We want the user to be able to add a model to a second layer
Chris@0:     // _while it's still being calculated in the first_ and have it
Chris@0:     // work quickly.  That means we need to put the same physical
Chris@0:     // model pointer in both layers, so they can't actually be cloned.
Chris@0:     
Chris@0:     if (newLayer) {
Chris@0: 	newLayer->setObjectName(getUniqueLayerName
Chris@0:                                 (TransformFactory::getInstance()->
Chris@0:                                  getTransformFriendlyName(transform)));
Chris@0:     }
Chris@0: 
Chris@0:     emit layerAdded(newLayer);
Chris@0:     return newLayer;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::setMainModel(WaveFileModel *model)
Chris@0: {
Chris@0:     Model *oldMainModel = m_mainModel;
Chris@0:     m_mainModel = model;
Chris@0: 
Chris@0:     emit modelAdded(m_mainModel);
Chris@0: 
Chris@0:     std::vector<Layer *> obsoleteLayers;
Chris@0:     std::set<QString> failedTransforms;
Chris@0: 
Chris@0:     // We need to ensure that no layer is left using oldMainModel or
Chris@0:     // any of the old derived models as its model.  Either replace the
Chris@0:     // model, or delete the layer for each layer that is currently
Chris@0:     // using one of these.  Carry out this replacement before we
Chris@0:     // delete any of the models.
Chris@0: 
Chris@0:     for (LayerSet::iterator i = m_layers.begin(); i != m_layers.end(); ++i) {
Chris@0: 
Chris@0: 	Layer *layer = *i;
Chris@0: 	Model *model = layer->getModel();
Chris@0: 
Chris@45:         std::cerr << "Document::setMainModel: inspecting model "
Chris@45:                   << (model ? model->objectName().toStdString() : "(null)") << " in layer "
Chris@45:                   << layer->objectName().toStdString() << std::endl;
Chris@45: 
Chris@0: 	if (model == oldMainModel) {
Chris@45:             std::cerr << "... it uses the old main model, replacing" << std::endl;
Chris@0: 	    LayerFactory::getInstance()->setModel(layer, m_mainModel);
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 
Chris@0: 	if (m_models.find(model) == m_models.end()) {
Chris@0: 	    std::cerr << "WARNING: Document::setMainModel: Unknown model "
Chris@0: 		      << model << " in layer " << layer << std::endl;
Chris@0: 	    // get rid of this hideous degenerate
Chris@0: 	    obsoleteLayers.push_back(layer);
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 	    
Chris@0: 	if (m_models[model].source == oldMainModel) {
Chris@0: 
Chris@45:             std::cerr << "... it uses a model derived from the old main model, regenerating" << std::endl;
Chris@45: 
Chris@0: 	    // This model was derived from the previous main
Chris@0: 	    // model: regenerate it.
Chris@0: 	    
Chris@0: 	    TransformName transform = m_models[model].transform;
Chris@27:             PluginTransform::ExecutionContext context = m_models[model].context;
Chris@0: 	    
Chris@0: 	    Model *replacementModel =
Chris@55:                 addDerivedModel(transform,
Chris@55:                                 m_mainModel,
Chris@55:                                 context,
Chris@55:                                 m_models[model].configurationXml);
Chris@0: 	    
Chris@0: 	    if (!replacementModel) {
Chris@0: 		std::cerr << "WARNING: Document::setMainModel: Failed to regenerate model for transform \""
Chris@0: 			  << transform.toStdString() << "\"" << " in layer " << layer << std::endl;
Chris@0:                 if (failedTransforms.find(transform) == failedTransforms.end()) {
Chris@0:                     emit modelRegenerationFailed(layer->objectName(),
Chris@0:                                                  transform);
Chris@0:                     failedTransforms.insert(transform);
Chris@0:                 }
Chris@0: 		obsoleteLayers.push_back(layer);
Chris@0: 	    } else {
Chris@45:                 std::cerr << "Replacing model " << model << " (type "
Chris@45:                           << typeid(*model).name() << ") with model "
Chris@45:                           << replacementModel << " (type "
Chris@45:                           << typeid(*replacementModel).name() << ") in layer "
Chris@45:                           << layer << " (name " << layer->objectName().toStdString() << ")"
Chris@45:                           << std::endl;
Chris@45:                 RangeSummarisableTimeValueModel *rm =
Chris@45:                     dynamic_cast<RangeSummarisableTimeValueModel *>(replacementModel);
Chris@45:                 if (rm) {
Chris@45:                     std::cerr << "new model has " << rm->getChannelCount() << " channels " << std::endl;
Chris@45:                 } else {
Chris@45:                     std::cerr << "new model is not a RangeSummarisableTimeValueModel!" << std::endl;
Chris@45:                 }
Chris@0: 		setModel(layer, replacementModel);
Chris@0: 	    }
Chris@0: 	}	    
Chris@0:     }
Chris@0: 
Chris@0:     for (size_t k = 0; k < obsoleteLayers.size(); ++k) {
Chris@0: 	deleteLayer(obsoleteLayers[k], true);
Chris@0:     }
Chris@0: 
Chris@0:     emit mainModelChanged(m_mainModel);
Chris@0: 
Chris@0:     // we already emitted modelAboutToBeDeleted for this
Chris@0:     delete oldMainModel;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::addDerivedModel(TransformName transform,
Chris@0:                           Model *inputModel,
Chris@27:                           const PluginTransform::ExecutionContext &context,
Chris@0:                           Model *outputModelToAdd,
Chris@0:                           QString configurationXml)
Chris@0: {
Chris@0:     if (m_models.find(outputModelToAdd) != m_models.end()) {
Chris@0: 	std::cerr << "WARNING: Document::addDerivedModel: Model already added"
Chris@0: 		  << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@54:     std::cerr << "Document::addDerivedModel: source is " << inputModel << " \"" << inputModel->objectName().toStdString() << std::endl;
Chris@54: 
Chris@0:     ModelRecord rec;
Chris@0:     rec.source = inputModel;
Chris@0:     rec.transform = transform;
Chris@27:     rec.context = context;
Chris@0:     rec.configurationXml = configurationXml;
Chris@0:     rec.refcount = 0;
Chris@0: 
Chris@0:     m_models[outputModelToAdd] = rec;
Chris@0: 
Chris@0:     emit modelAdded(outputModelToAdd);
Chris@0: }
Chris@0: 
Chris@0: 
Chris@0: void
Chris@0: Document::addImportedModel(Model *model)
Chris@0: {
Chris@0:     if (m_models.find(model) != m_models.end()) {
Chris@0: 	std::cerr << "WARNING: Document::addImportedModel: Model already added"
Chris@0: 		  << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     ModelRecord rec;
Chris@0:     rec.source = 0;
Chris@0:     rec.transform = "";
Chris@0:     rec.refcount = 0;
Chris@0: 
Chris@0:     m_models[model] = rec;
Chris@0: 
Chris@0:     emit modelAdded(model);
Chris@0: }
Chris@0: 
Chris@0: Model *
Chris@55: Document::addDerivedModel(TransformName transform,
Chris@55:                           Model *inputModel,
Chris@55:                           const PluginTransform::ExecutionContext &context,
Chris@55:                           QString configurationXml)
Chris@0: {
Chris@0:     Model *model = 0;
Chris@0: 
Chris@0:     for (ModelMap::iterator i = m_models.begin(); i != m_models.end(); ++i) {
Chris@0: 	if (i->second.transform == transform &&
Chris@0: 	    i->second.source == inputModel && 
Chris@27:             i->second.context == context &&
Chris@0:             i->second.configurationXml == configurationXml) {
Chris@0: 	    return i->first;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     model = TransformFactory::getInstance()->transform
Chris@27: 	(transform, inputModel, context, configurationXml);
Chris@0: 
Chris@0:     if (!model) {
Chris@55: 	std::cerr << "WARNING: Document::addDerivedModel: no output model for transform " << transform.toStdString() << std::endl;
Chris@0:     } else {
Chris@27: 	addDerivedModel(transform, inputModel, context, model, configurationXml);
Chris@0:     }
Chris@0: 
Chris@0:     return model;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::releaseModel(Model *model) // Will _not_ release main model!
Chris@0: {
Chris@0:     if (model == 0) {
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     if (model == m_mainModel) {
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     bool toDelete = false;
Chris@0: 
Chris@0:     if (m_models.find(model) != m_models.end()) {
Chris@0: 	
Chris@0: 	if (m_models[model].refcount == 0) {
Chris@0: 	    std::cerr << "WARNING: Document::releaseModel: model " << model
Chris@0: 		      << " reference count is zero already!" << std::endl;
Chris@0: 	} else {
Chris@0: 	    if (--m_models[model].refcount == 0) {
Chris@0: 		toDelete = true;
Chris@0: 	    }
Chris@0: 	}
Chris@0:     } else { 
Chris@0: 	std::cerr << "WARNING: Document::releaseModel: Unfound model "
Chris@0: 		  << model << std::endl;
Chris@0: 	toDelete = true;
Chris@0:     }
Chris@0: 
Chris@0:     if (toDelete) {
Chris@0: 
Chris@0: 	int sourceCount = 0;
Chris@0: 
Chris@0: 	for (ModelMap::iterator i = m_models.begin(); i != m_models.end(); ++i) {
Chris@0: 	    if (i->second.source == model) {
Chris@0: 		++sourceCount;
Chris@0: 		i->second.source = 0;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0: 	if (sourceCount > 0) {
Chris@0: 	    std::cerr << "Document::releaseModel: Deleting model "
Chris@0: 		      << model << " even though it is source for "
Chris@0: 		      << sourceCount << " other derived model(s) -- resetting "
Chris@0: 		      << "their source fields appropriately" << std::endl;
Chris@0: 	}
Chris@0: 
Chris@0: 	emit modelAboutToBeDeleted(model);
Chris@0: 	m_models.erase(model);
Chris@0: 	delete model;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::deleteLayer(Layer *layer, bool force)
Chris@0: {
Chris@0:     if (m_layerViewMap.find(layer) != m_layerViewMap.end() &&
Chris@0: 	m_layerViewMap[layer].size() > 0) {
Chris@0: 
Chris@0: 	std::cerr << "WARNING: Document::deleteLayer: Layer "
Chris@0: 		  << layer << " [" << layer->objectName().toStdString() << "]"
Chris@0: 		  << " is still used in " << m_layerViewMap[layer].size()
Chris@0: 		  << " views!" << std::endl;
Chris@0: 
Chris@0: 	if (force) {
Chris@0: 
Chris@0: 	    std::cerr << "(force flag set -- deleting from all views)" << std::endl;
Chris@0: 
Chris@0: 	    for (std::set<View *>::iterator j = m_layerViewMap[layer].begin();
Chris@0: 		 j != m_layerViewMap[layer].end(); ++j) {
Chris@0: 		// don't use removeLayerFromView, as it issues a command
Chris@0: 		layer->setLayerDormant(*j, true);
Chris@0: 		(*j)->removeLayer(layer);
Chris@0: 	    }
Chris@0: 	    
Chris@0: 	    m_layerViewMap.erase(layer);
Chris@0: 
Chris@0: 	} else {
Chris@0: 	    return;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (m_layers.find(layer) == m_layers.end()) {
Chris@0: 	std::cerr << "Document::deleteLayer: Layer "
Chris@0: 		  << layer << " does not exist, or has already been deleted "
Chris@0: 		  << "(this may not be as serious as it sounds)" << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     m_layers.erase(layer);
Chris@0: 
Chris@0:     releaseModel(layer->getModel());
Chris@0:     emit layerRemoved(layer);
Chris@0:     emit layerAboutToBeDeleted(layer);
Chris@0:     delete layer;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::setModel(Layer *layer, Model *model)
Chris@0: {
Chris@0:     if (model && 
Chris@0: 	model != m_mainModel &&
Chris@0: 	m_models.find(model) == m_models.end()) {
Chris@0: 	std::cerr << "ERROR: Document::setModel: Layer " << layer
Chris@0: 		  << " is using unregistered model " << model
Chris@0: 		  << ": register the layer's model before setting it!"
Chris@0: 		  << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@45:     Model *previousModel = layer->getModel();
Chris@45: 
Chris@45:     if (previousModel == model) {
Chris@55:         std::cerr << "WARNING: Document::setModel: Layer " << layer << " (\""
Chris@55:                   << layer->objectName().toStdString()
Chris@55:                   << "\") is already set to model "
Chris@55:                   << model << " (\""
Chris@55:                   << (model ? model->objectName().toStdString() : "(null)")
Chris@55:                   << "\")" << std::endl;
Chris@45:         return;
Chris@0:     }
Chris@0: 
Chris@0:     if (model && model != m_mainModel) {
Chris@0: 	m_models[model].refcount ++;
Chris@0:     }
Chris@0: 
Chris@0:     LayerFactory::getInstance()->setModel(layer, model);
Chris@45: 
Chris@45:     if (previousModel) {
Chris@45:         releaseModel(previousModel);
Chris@45:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::setChannel(Layer *layer, int channel)
Chris@0: {
Chris@0:     LayerFactory::getInstance()->setChannel(layer, channel);
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::addLayerToView(View *view, Layer *layer)
Chris@0: {
Chris@0:     Model *model = layer->getModel();
Chris@0:     if (!model) {
Chris@55: 	std::cerr << "Document::addLayerToView: Layer (\""
Chris@55:                   << layer->objectName().toStdString()
Chris@55:                   << "\") with no model being added to view: "
Chris@55:                   << "normally you want to set the model first" << std::endl;
Chris@0:     } else {
Chris@0: 	if (model != m_mainModel &&
Chris@0: 	    m_models.find(model) == m_models.end()) {
Chris@0: 	    std::cerr << "ERROR: Document::addLayerToView: Layer " << layer
Chris@0: 		      << " has unregistered model " << model
Chris@0: 		      << " -- register the layer's model before adding the layer!" << std::endl;
Chris@0: 	    return;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     CommandHistory::getInstance()->addCommand
Chris@0: 	(new Document::AddLayerCommand(this, view, layer));
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::removeLayerFromView(View *view, Layer *layer)
Chris@0: {
Chris@0:     CommandHistory::getInstance()->addCommand
Chris@0: 	(new Document::RemoveLayerCommand(this, view, layer));
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::addToLayerViewMap(Layer *layer, View *view)
Chris@0: {
Chris@0:     bool firstView = (m_layerViewMap.find(layer) == m_layerViewMap.end() ||
Chris@0:                       m_layerViewMap[layer].empty());
Chris@0: 
Chris@0:     if (m_layerViewMap[layer].find(view) !=
Chris@0: 	m_layerViewMap[layer].end()) {
Chris@0: 	std::cerr << "WARNING: Document::addToLayerViewMap:"
Chris@0: 		  << " Layer " << layer << " -> view " << view << " already in"
Chris@0: 		  << " layer view map -- internal inconsistency" << std::endl;
Chris@0:     }
Chris@0: 
Chris@0:     m_layerViewMap[layer].insert(view);
Chris@0: 
Chris@0:     if (firstView) emit layerInAView(layer, true);
Chris@0: }
Chris@0:     
Chris@0: void
Chris@0: Document::removeFromLayerViewMap(Layer *layer, View *view)
Chris@0: {
Chris@0:     if (m_layerViewMap[layer].find(view) ==
Chris@0: 	m_layerViewMap[layer].end()) {
Chris@0: 	std::cerr << "WARNING: Document::removeFromLayerViewMap:"
Chris@0: 		  << " Layer " << layer << " -> view " << view << " not in"
Chris@0: 		  << " layer view map -- internal inconsistency" << std::endl;
Chris@0:     }
Chris@0: 
Chris@0:     m_layerViewMap[layer].erase(view);
Chris@0: 
Chris@0:     if (m_layerViewMap[layer].empty()) {
Chris@0:         m_layerViewMap.erase(layer);
Chris@0:         emit layerInAView(layer, false);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: Document::getUniqueLayerName(QString candidate)
Chris@0: {
Chris@0:     for (int count = 1; ; ++count) {
Chris@0: 
Chris@0:         QString adjusted =
Chris@0:             (count > 1 ? QString("%1 <%2>").arg(candidate).arg(count) :
Chris@0:              candidate);
Chris@0:         
Chris@0:         bool duplicate = false;
Chris@0: 
Chris@0:         for (LayerSet::iterator i = m_layers.begin(); i != m_layers.end(); ++i) {
Chris@0:             if ((*i)->objectName() == adjusted) {
Chris@0:                 duplicate = true;
Chris@0:                 break;
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         if (!duplicate) return adjusted;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: Document::AddLayerCommand::AddLayerCommand(Document *d,
Chris@0: 					   View *view,
Chris@0: 					   Layer *layer) :
Chris@0:     m_d(d),
Chris@0:     m_view(view),
Chris@0:     m_layer(layer),
Chris@0:     m_name(d->tr("Add %1 Layer").arg(layer->objectName())),
Chris@0:     m_added(false)
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: Document::AddLayerCommand::~AddLayerCommand()
Chris@0: {
Chris@0: //    std::cerr << "Document::AddLayerCommand::~AddLayerCommand" << std::endl;
Chris@0:     if (!m_added) {
Chris@0: 	m_d->deleteLayer(m_layer);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::AddLayerCommand::execute()
Chris@0: {
Chris@0:     for (int i = 0; i < m_view->getLayerCount(); ++i) {
Chris@0: 	if (m_view->getLayer(i) == m_layer) {
Chris@0: 	    // already there
Chris@0: 	    m_layer->setLayerDormant(m_view, false);
Chris@0: 	    m_added = true;
Chris@0: 	    return;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     m_view->addLayer(m_layer);
Chris@0:     m_layer->setLayerDormant(m_view, false);
Chris@0: 
Chris@0:     m_d->addToLayerViewMap(m_layer, m_view);
Chris@0:     m_added = true;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::AddLayerCommand::unexecute()
Chris@0: {
Chris@0:     m_view->removeLayer(m_layer);
Chris@0:     m_layer->setLayerDormant(m_view, true);
Chris@0: 
Chris@0:     m_d->removeFromLayerViewMap(m_layer, m_view);
Chris@0:     m_added = false;
Chris@0: }
Chris@0: 
Chris@0: Document::RemoveLayerCommand::RemoveLayerCommand(Document *d,
Chris@0: 						 View *view,
Chris@0: 						 Layer *layer) :
Chris@0:     m_d(d),
Chris@0:     m_view(view),
Chris@0:     m_layer(layer),
Chris@0:     m_name(d->tr("Delete %1 Layer").arg(layer->objectName())),
Chris@0:     m_added(true)
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: Document::RemoveLayerCommand::~RemoveLayerCommand()
Chris@0: {
Chris@0: //    std::cerr << "Document::RemoveLayerCommand::~RemoveLayerCommand" << std::endl;
Chris@0:     if (!m_added) {
Chris@0: 	m_d->deleteLayer(m_layer);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::RemoveLayerCommand::execute()
Chris@0: {
Chris@0:     bool have = false;
Chris@0:     for (int i = 0; i < m_view->getLayerCount(); ++i) {
Chris@0: 	if (m_view->getLayer(i) == m_layer) {
Chris@0: 	    have = true;
Chris@0: 	    break;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (!have) { // not there!
Chris@0: 	m_layer->setLayerDormant(m_view, true);
Chris@0: 	m_added = false;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     m_view->removeLayer(m_layer);
Chris@0:     m_layer->setLayerDormant(m_view, true);
Chris@0: 
Chris@0:     m_d->removeFromLayerViewMap(m_layer, m_view);
Chris@0:     m_added = false;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::RemoveLayerCommand::unexecute()
Chris@0: {
Chris@0:     m_view->addLayer(m_layer);
Chris@0:     m_layer->setLayerDormant(m_view, false);
Chris@0: 
Chris@0:     m_d->addToLayerViewMap(m_layer, m_view);
Chris@0:     m_added = true;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: Document::toXml(QTextStream &out, QString indent, QString extraAttributes) const
Chris@0: {
Chris@0:     out << indent + QString("<data%1%2>\n")
Chris@0:         .arg(extraAttributes == "" ? "" : " ").arg(extraAttributes);
Chris@0: 
Chris@0:     if (m_mainModel) {
Chris@0: 	m_mainModel->toXml(out, indent + "  ", "mainModel=\"true\"");
Chris@0:     }
Chris@0: 
Chris@0:     for (ModelMap::const_iterator i = m_models.begin();
Chris@0: 	 i != m_models.end(); ++i) {
Chris@0: 
Chris@55:         const Model *model = i->first;
Chris@0: 	const ModelRecord &rec = i->second;
Chris@0: 
Chris@55:         // We need an intelligent way to determine which models need
Chris@55:         // to be streamed (i.e. have been edited, or are small) and
Chris@55:         // which should not be (i.e. remain as generated by a
Chris@55:         // transform, and are large).
Chris@55:         //
Chris@55:         // At the moment we can get away with deciding not to stream
Chris@55:         // dense 3d models or writable wave file models, provided they
Chris@55:         // were generated from a transform, because at the moment there
Chris@55:         // is no way to edit those model types so it should be safe to
Chris@55:         // regenerate them.  That won't always work in future though.
Chris@55:         // It would be particularly nice to be able to ask the user,
Chris@55:         // as well as making an intelligent guess.
Chris@55: 
Chris@55:         bool writeModel = true;
Chris@55:         bool haveDerivation = false;
Chris@55: 
Chris@55:         if (rec.source && rec.transform != "") {
Chris@55:             haveDerivation = true;
Chris@55:         } 
Chris@55: 
Chris@55:         if (haveDerivation) {
Chris@55:             if (dynamic_cast<const WritableWaveFileModel *>(model)) {
Chris@55:                 writeModel = false;
Chris@55:             } else if (dynamic_cast<const DenseThreeDimensionalModel *>(model)) {
Chris@55:                 writeModel = false;
Chris@55:             }
Chris@55:         }
Chris@55: 
Chris@55:         if (writeModel) {
Chris@55:             i->first->toXml(out, indent + "  ");
Chris@55:         }
Chris@55: 
Chris@55: 	if (haveDerivation) {
Chris@0: 	    
Chris@27:             //!!! stream the rest of the execution context in both directions (i.e. not just channel)
Chris@27: 
Chris@0: 	    out << indent;
Chris@30: 	    out << QString("  <derivation source=\"%1\" model=\"%2\" channel=\"%3\" domain=\"%4\" stepSize=\"%5\" blockSize=\"%6\" windowType=\"%7\" transform=\"%8\"")
Chris@0: 		.arg(XmlExportable::getObjectExportId(rec.source))
Chris@0: 		.arg(XmlExportable::getObjectExportId(i->first))
Chris@27:                 .arg(rec.context.channel)
Chris@30:                 .arg(rec.context.domain)
Chris@30:                 .arg(rec.context.stepSize)
Chris@30:                 .arg(rec.context.blockSize)
Chris@30:                 .arg(int(rec.context.windowType))
Chris@0: 		.arg(XmlExportable::encodeEntities(rec.transform));
Chris@0: 
Chris@0:             if (rec.configurationXml != "") {
Chris@0:                 out << ">\n    " + indent + rec.configurationXml
Chris@0:                     + "\n" + indent + "  </derivation>\n";
Chris@0:             } else {
Chris@0:                 out << "/>\n";
Chris@0:             }
Chris@0: 	}
Chris@0: 
Chris@0:         //!!! We should probably own the PlayParameterRepository
Chris@0:         PlayParameters *playParameters =
Chris@0:             PlayParameterRepository::getInstance()->getPlayParameters(i->first);
Chris@0:         if (playParameters) {
Chris@0:             playParameters->toXml
Chris@0:                 (out, indent + "  ",
Chris@0:                  QString("model=\"%1\"")
Chris@0:                  .arg(XmlExportable::getObjectExportId(i->first)));
Chris@0:         }
Chris@0:     }
Chris@0: 	    
Chris@0:     for (LayerSet::const_iterator i = m_layers.begin();
Chris@0: 	 i != m_layers.end(); ++i) {
Chris@0: 
Chris@0: 	(*i)->toXml(out, indent + "  ");
Chris@0:     }
Chris@0: 
Chris@0:     out << indent + "</data>\n";
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: Document::toXmlString(QString indent, QString extraAttributes) const
Chris@0: {
Chris@0:     QString s;
Chris@0: 
Chris@0:     {
Chris@0:         QTextStream out(&s);
Chris@0:         toXml(out, indent, extraAttributes);
Chris@0:     }
Chris@0: 
Chris@0:     return s;
Chris@0: }
Chris@0: