+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
+
+// File: XGUI_DataModel.h
+// Created: 21 Jul 2015
+// Author: Vitaly SMETANNIKOV
+
#ifndef XGUI_DataModel_H
#define XGUI_DataModel_H
+#include "XGUI.h"
+#include <ModuleBase_Definitions.h>
+#include <ModelAPI_Object.h>
+#include <ModelAPI_Document.h>
+#include <Events_Listener.h>
+
#include <QAbstractItemModel>
-class XGUI_DataModel : public QAbstractItemModel
+class Config_DataModelReader;
+
+/**\class XGUI_DataModel
+ * \ingroup GUI
+ * \brief This is a data model for Object Browser (QTreeView).
+ * It uses XML file for definition of data tree.
+ * Some tips about organization of the model:
+ * - Non Valid Index - root index
+ * - An index with internal Id == -1 is a folder of root document
+ * - An index which contains internal pointer as ModelAPI_Object its the object
+ * - An index which contains internal pointer as ModelAPI_Document is
+ * a folder which belongs to this document
+ */
+class XGUI_EXPORT XGUI_DataModel : public QAbstractItemModel, public Events_Listener
{
- Q_OBJECT
+Q_OBJECT
public:
+ /// Constructor
+ /// \param theParent a parent object
XGUI_DataModel(QObject* theParent);
+
+ /// Destructor
virtual ~XGUI_DataModel();
+
+ /// Event Listener method
+ /// \param theMessage an event message
+ virtual void processEvent(const std::shared_ptr<Events_Message>& theMessage);
+
+ //! Returns an object by the given Model index.
+ //! Returns 0 if the given index is not index of an object
+ virtual ObjectPtr object(const QModelIndex& theIndex) const;
+
+ //! Returns index of the object
+ //! \param theObject object to find
+ virtual QModelIndex objectIndex(const ObjectPtr theObject) const;
+
+ //! Clear internal data
+ virtual void clear();
+
+ //! Rebuild data tree
+ virtual void rebuildDataTree();
+
+
+ /// Returns the data stored under the given role for the item referred to by the index.
+ /// \param theIndex a model index
+ /// \param theRole a data role (see Qt::ItemDataRole)
+ virtual QVariant data(const QModelIndex& theIndex, int theRole) const;
+
+ /// Returns the data for the given role and section in the header with the specified orientation.
+ /// \param theSection a section
+ /// \param theOrient an orientation
+ /// \param theRole a data role (see Qt::ItemDataRole)
+ virtual QVariant headerData(int theSection, Qt::Orientation theOrient, int theRole =
+ Qt::DisplayRole) const;
+
+ /// Returns the number of rows under the given parent. When the parent is valid it means that
+ /// rowCount is returning the number of children of parent.
+ /// \param theParent a parent model index
+ virtual int rowCount(const QModelIndex& theParent = QModelIndex()) const;
+
+ /// Returns the number of columns for the children of the given parent.
+ /// It has a one column
+ /// \param theParent a parent model index
+ virtual int columnCount(const QModelIndex& theParent = QModelIndex()) const;
+
+ /// Returns the index of the item in the model specified by the given row,
+ /// column and parent index.
+ /// \param theRow a row
+ /// \param theColumn a column
+ /// \param theParent a parent model index
+ virtual QModelIndex index(int theRow, int theColumn, const QModelIndex &theParent =
+ QModelIndex()) const;
+
+ /// Returns the parent of the model item with the given index.
+ /// If the item has no parent, an invalid QModelIndex is returned.
+ /// \param theIndex a model index
+ virtual QModelIndex parent(const QModelIndex& theIndex) const;
+
+ /// Returns true if parent has any children; otherwise returns false.
+ /// \param theParent a parent model index
+ virtual bool hasChildren(const QModelIndex& theParent = QModelIndex()) const;
+
+ /// Inserts count rows into the model before the given row.
+ /// Items in the new row will be children of the item represented by the parent model index.
+ /// \param theRow a start row
+ /// \param theCount a nember of rows to insert
+ /// \param theParent a parent model index
+ virtual bool insertRows(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
+
+ /// Removes count rows starting with the given row under parent parent from the model.
+ /// \param theRow a start row
+ /// \param theCount a nember of rows to remove
+ /// \param theParent a parent model index
+ virtual bool removeRows(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
+
+ /// Returns the item flags for the given index.
+ /// \param theIndex a model index
+ virtual Qt::ItemFlags flags(const QModelIndex& theIndex) const;
+
+ /// Returns an index which is root of the given document
+ /// \param theDoc a document
+ QModelIndex documentRootIndex(DocumentPtr theDoc) const;
+
+ /// Returns last history object index
+ virtual QModelIndex lastHistoryIndex() const;
+
+ /// Initialises XML data model reader. It must be initialised before DataModel using.
+ void setXMLReader(Config_DataModelReader* theReader) { myXMLReader = theReader; }
+
+signals:
+ /// Signal about tree had been rebuilt
+ void treeRebuilt();
+
+private:
+ /// Find a root index which contains objects of the given document
+ /// \param theDoc the document object
+ QModelIndex findDocumentRootIndex(const ModelAPI_Document* theDoc) const;
+
+ /// Returns number of folders in document.
+ /// Considered folders which has to be shown only if they are not empty.
+ /// \param theDoc document which has to be checked. If 0 then Root document will be considered
+ int foldersCount(ModelAPI_Document* theDoc = 0) const;
+
+ /// Retrurns indexes of folders which can not be shown because they are empty
+ /// \param theDoc document which has to be checked. If 0 then Root document will be considered
+ QIntList missedFolderIndexes(ModelAPI_Document* theDoc = 0) const;
+
+ /// Returns Id (row) of a folder taking into consideration
+ /// folders which can not be shown non empty
+ /// \param theType Type of the folder
+ /// \param theDoc a document which contains this folder
+ int folderId(std::string theType, ModelAPI_Document* theDoc = 0);
+
+ /// Removes a row from branch of tree
+ /// \param theStart - start row to update indexes
+ /// \param theSize - number of indexes in the folder
+ /// \param theParent - index of parent folder
+ void rebuildBranch(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
+
+
+ /// Returns list of folders types which can not be shown empty
+ /// \param fromRoot - root document flag
+ QStringList listOfShowNotEmptyFolders(bool fromRoot = true) const;
+
+ Config_DataModelReader* myXMLReader;
};
#endif
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