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71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
// Created on: 2017-06-16
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// Created by: Natalia ERMOLAEVA
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// Copyright (c) 2017 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef TreeModel_VisibilityState_H
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#define TreeModel_VisibilityState_H
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#include <inspector/TreeModel_ModelBase.hxx>
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#include <inspector/TreeModel_ColumnType.hxx>
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#include <Standard.hxx>
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#include <Standard_Macro.hxx>
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//! \class TreeModel_VisibilityState
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//! \brief Interface that provides connection between model and visualization control to:
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//! - know whether the model item is visible
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//! - change visibility of the model item
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class TreeModel_VisibilityState
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{
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public:
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//! Constructor
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TreeModel_VisibilityState (TreeModel_ModelBase* theModel) : myModel (theModel) {}
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//! Destructor
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~TreeModel_VisibilityState() {}
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//! Returns true if visibility of the item can be changed
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//! \param theIndex tree model index
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//! \return boolean value
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virtual bool CanBeVisible (const QModelIndex& theIndex) const = 0;
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//! Sets visibility state
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//! \param theIndex tree model index
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//! \param theState visibility state
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//! \param toEmitDataChanged boolean flag whether emit of the model should be done immediately
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//! \return true if state is changed
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virtual bool SetVisible (const QModelIndex& theIndex, const bool theState, const bool toEmitDataChanged = true) = 0;
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//! Returns visibility state value
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//! \param theIndex tree model index
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//! \return boolean value
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virtual bool IsVisible (const QModelIndex& theIndex) const = 0;
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protected:
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//! Processes the mouse clicked on the index.
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//! It changes the item visibility if model allows to change it.
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//! \theIndex tree model index
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//! \return true if click is processed
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Standard_EXPORT bool processClicked (const QModelIndex& theIndex);
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protected:
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//! tree view model
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TreeModel_ModelBase* getModel() const { return myModel; }
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private:
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TreeModel_ModelBase* myModel; //!< tree view model
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};
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#endif
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