add convenience and book-keeping methods to items (add/remove/setter/getter)

GUI/Models/ItemWithMaterial.cpp

@@ -23,6 +23,11 @@ void ItemWithMaterial::setMaterial(const MaterialItem* materialItem)
     setItemValue(P_MATERIAL, materialItem->identifier());
 }
 
+void ItemWithMaterial::setMaterial(const QString& materialIdentifier)
+{
+    setItemValue(P_MATERIAL, materialIdentifier);
+}
+
 bool ItemWithMaterial::isMaterialPropertyName(const QString& name)
 {
     return name == P_MATERIAL;

GUI/Models/ItemWithMaterial.h

@@ -26,9 +26,14 @@ private:
 public:
     static bool isMaterialPropertyName(const QString& name);
 
-    //! Set the material this item shall use. Stores the identifier, not the pointer!
+    //! Set the material this item shall use.
+    //! Stores the identifier, not the pointer!
     void setMaterial(const MaterialItem* materialItem);
 
+    //! Set the material this item shall use.
+    //! Stores the given identifier, not a pointer to the material!
+    void setMaterial(const QString& materialIdentifier);
+
     //! Set "no material defined"
     void setMaterialUndefined();
 

GUI/Models/LayerItem.cpp

@@ -108,6 +108,11 @@ QVector<ParticleLayoutItem*> LayerItem::layouts() const
     return items<ParticleLayoutItem>(T_LAYOUTS);
 }
 
+void LayerItem::removeLayout(ParticleLayoutItem* layout)
+{
+    model()->removeItem(layout);
+}
+
 void LayerItem::updateAppearance(SessionItem* new_parent)
 {
     if (!new_parent) {

GUI/Models/LayerItem.h

@@ -49,6 +49,7 @@ public:
     SessionItem* numSlicesItem() const;
 
     QVector<ParticleLayoutItem*> layouts() const;
+    void removeLayout(ParticleLayoutItem* layout);
 
 private:
     void updateAppearance(SessionItem* new_parent);

GUI/Models/MultiLayerItem.cpp

@@ -107,6 +107,17 @@ void MultiLayerItem::removeLayer(LayerItem* item)
     model()->removeItem(item);
 }
 
+
+void MultiLayerItem::moveLayer(LayerItem* item, LayerItem* beforeThisLayer)
+{
+    int index = -1; // move to end
+    if (beforeThisLayer != nullptr) {
+        index = layers().indexOf(beforeThisLayer);
+    }
+
+    model()->moveItem(item, this, index);
+}
+
 void MultiLayerItem::updateLayers()
 {
     QVector<LayerItem*> list = childrenOfType<LayerItem>();

GUI/Models/MultiLayerItem.h

@@ -55,6 +55,7 @@ public:
     LayerItem* addLayer(int index);
 
     void removeLayer(LayerItem* item);
+    void moveLayer(LayerItem* item, LayerItem* beforeThisLayer);
 
 private:
     void updateLayers();

GUI/Models/ParticleCompositionItem.cpp

@@ -89,3 +89,8 @@ void ParticleCompositionItem::addParticle(ItemWithParticles* particle)
 {
     model()->moveItem(particle, this, -1, T_PARTICLES);
 }
+
+void ParticleCompositionItem::removeParticle(ItemWithParticles* particle)
+{
+    model()->removeItem(particle);
+}

GUI/Models/ParticleCompositionItem.h

@@ -33,6 +33,7 @@ public:
 
     QVector<ItemWithParticles*> particles() const;
     void addParticle(ItemWithParticles* particle);
+    void removeParticle(ItemWithParticles* particle);
 };
 
 #endif // BORNAGAIN_GUI_MODELS_PARTICLECOMPOSITIONITEM_H

GUI/Models/ParticleLayoutItem.cpp

@@ -108,6 +108,11 @@ void ParticleLayoutItem::addParticle(ItemWithParticles* particle)
     model()->moveItem(particle, this, -1, T_PARTICLES);
 }
 
+void ParticleLayoutItem::removeParticle(ItemWithParticles* particle)
+{
+    model()->removeItem(particle);
+}
+
 InterferenceItem* ParticleLayoutItem::interference() const
 {
     return dynamic_cast<InterferenceItem*>(getItem(T_INTERFERENCE));

GUI/Models/ParticleLayoutItem.h

@@ -41,6 +41,7 @@ public:
 
     QVector<ItemWithParticles*> particles() const;
     void addParticle(ItemWithParticles* particle);
+    void removeParticle(ItemWithParticles* particle);
 
     InterferenceItem* interference() const;
     template <typename T> T* createInterference();

GUI/Models/SamplesTreeModel.cpp

@@ -14,9 +14,11 @@
 
 #include "GUI/Models/SamplesTreeModel.h"
 #include "GUI/Application/Application.h"
+#include "GUI/Models/GUIExamplesFactory.h"
 #include "GUI/Models/ModelUtils.h"
 #include "GUI/Models/MultiLayerItem.h"
 #include "GUI/Models/SampleModel.h"
+#include "GUI/mainwindow/projectmanager.h"
 #include <QApplication>
 #include <QFontMetrics>
 #include <QIcon>
@@ -213,3 +215,19 @@ QModelIndex SamplesTreeModel::createSample()
     endInsertRows();
     return indexForItem(multilayer_item);
 }
+
+QModelIndex SamplesTreeModel::createSampleFromExamples(const QString& className,
+                                                       const QString& title,
+                                                       const QString& description)
+{
+    const int row = m_sampleModel->multiLayerItems().size();
+    beginInsertRows(index(0, 0), row, row);
+
+    auto* sample = dynamic_cast<MultiLayerItem*>(GUIExamplesFactory::createSampleItems(
+        className, m_sampleModel, ProjectManager::instance()->document()->materialModel()));
+    sample->setItemName(title);
+    sample->setDescription(description);
+
+    endInsertRows();
+    return indexForItem(sample);
+}

GUI/Models/SamplesTreeModel.h

@@ -48,6 +48,9 @@ public:
 
     //! Create a new sample (multilayer) and return the index of it.
     QModelIndex createSample();
+    QModelIndex createSampleFromExamples(const QString& className, const QString& title,
+                                         const QString& description);
+
 
 private:
     void clear();