1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
3 // File: XGUI_DataModel.h
4 // Created: 21 Jul 2015
5 // Author: Vitaly SMETANNIKOV
8 #ifndef XGUI_DataModel_H
9 #define XGUI_DataModel_H
12 #include <ModuleBase_Definitions.h>
13 #include <ModelAPI_Object.h>
14 #include <ModelAPI_Document.h>
15 #include <Config_DataModelReader.h>
16 #include <Events_Listener.h>
18 #include <QAbstractItemModel>
20 /**\class XGUI_DataModel
22 * \brief This is a data model for Object Browser (QTreeView).
23 * It uses XML file for definition of data tree.
24 * Some tips about organization of the model:
25 * - Non Valid Index - root index
26 * - An index with internal Id == -1 is a folder of root document
27 * - An index which contains internal pointer as ModelAPI_Object its the object
28 * - An index which contains internal pointer as ModelAPI_Document is a folder which belongs to this document
30 class XGUI_EXPORT XGUI_DataModel : public QAbstractItemModel, public Events_Listener
35 /// \param theParent a parent object
36 XGUI_DataModel(QObject* theParent);
38 /// Event Listener method
39 /// \param theMessage an event message
40 virtual void processEvent(const std::shared_ptr<Events_Message>& theMessage);
42 //! Returns an object by the given Model index.
43 //! Returns 0 if the given index is not index of an object
44 virtual ObjectPtr object(const QModelIndex& theIndex) const;
46 //! Returns index of the object
47 //! \param theObject object to find
48 virtual QModelIndex objectIndex(const ObjectPtr theObject) const;
50 //! Clear internal data
54 virtual void rebuildDataTree();
57 /// Returns the data stored under the given role for the item referred to by the index.
58 /// \param theIndex a model index
59 /// \param theRole a data role (see Qt::ItemDataRole)
60 virtual QVariant data(const QModelIndex& theIndex, int theRole) const;
62 /// Returns the data for the given role and section in the header with the specified orientation.
63 /// \param theSection a section
64 /// \param theOrient an orientation
65 /// \param theRole a data role (see Qt::ItemDataRole)
66 virtual QVariant headerData(int theSection, Qt::Orientation theOrient, int theRole =
67 Qt::DisplayRole) const;
69 /// Returns the number of rows under the given parent. When the parent is valid it means that
70 /// rowCount is returning the number of children of parent.
71 /// \param theParent a parent model index
72 virtual int rowCount(const QModelIndex& theParent = QModelIndex()) const;
74 /// Returns the number of columns for the children of the given parent.
75 /// It has a one column
76 /// \param theParent a parent model index
77 virtual int columnCount(const QModelIndex& theParent = QModelIndex()) const;
79 /// Returns the index of the item in the model specified by the given row, column and parent index.
80 /// \param theRow a row
81 /// \param theColumn a column
82 /// \param theParent a parent model index
83 virtual QModelIndex index(int theRow, int theColumn, const QModelIndex &theParent =
86 /// Returns the parent of the model item with the given index.
87 /// If the item has no parent, an invalid QModelIndex is returned.
88 /// \param theIndex a model index
89 virtual QModelIndex parent(const QModelIndex& theIndex) const;
91 /// Returns true if parent has any children; otherwise returns false.
92 /// \param theParent a parent model index
93 virtual bool hasChildren(const QModelIndex& theParent = QModelIndex()) const;
95 /// Inserts count rows into the model before the given row.
96 /// Items in the new row will be children of the item represented by the parent model index.
97 /// \param theRow a start row
98 /// \param theCount a nember of rows to insert
99 /// \param theParent a parent model index
100 virtual bool insertRows(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
102 /// Removes count rows starting with the given row under parent parent from the model.
103 /// \param theRow a start row
104 /// \param theCount a nember of rows to remove
105 /// \param theParent a parent model index
106 virtual bool removeRows(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
108 /// Returns the item flags for the given index.
109 /// \param theIndex a model index
110 virtual Qt::ItemFlags flags(const QModelIndex& theIndex) const;
112 /// Returns an index which is root of the given document
113 /// \param theDoc a document
114 QModelIndex documentRootIndex(DocumentPtr theDoc) const;
116 /// Returns last history object index
117 virtual QModelIndex lastHistoryIndex() const;
120 /// Find a root index which contains objects of the given document
121 /// \param theDoc the document object
122 QModelIndex findDocumentRootIndex(const ModelAPI_Document* theDoc) const;
124 /// Returns number of folders in document. Considered folders which has to be shown only if they are not empty.
125 /// \param theDoc document which has to be checked. If 0 then Root document will be considered
126 int foldersCount(ModelAPI_Document* theDoc = 0) const;
128 /// Retrurns indexes of folders which can not be shown because they are empty
129 /// \param theDoc document which has to be checked. If 0 then Root document will be considered
130 QIntList missedFolderIndexes(ModelAPI_Document* theDoc = 0) const;
132 /// Returns Id (row) of a folder taking into consideration folders which can not be shown non empty
133 /// \param theType Type of the folder
134 /// \param theDoc a document which contains this folder
135 int folderId(std::string theType, ModelAPI_Document* theDoc = 0);
137 /// Removes a row from branch of tree
138 /// \param theStart - start row to update indexes
139 /// \param theSize - number of indexes in the folder
140 /// \param theParent - index of parent folder
141 void rebuildBranch(int theRow, int theCount, const QModelIndex& theParent = QModelIndex());
144 /// Returns list of folders types which can not be shown empty
145 /// \param fromRoot - root document flag
146 QStringList listOfShowNotEmptyFolders(bool fromRoot = true) const;
148 Config_DataModelReader myXMLReader;