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116 lines
3.1 KiB
116 lines
3.1 KiB
15 years ago
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/* This file is part of the KDE project
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Copyright (C) 2001 Thomas Zander zander@kde.org
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Copyright (C) 2004 Dag Andersen <danders@get2net.dk>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef KPTRELATION_H
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#define KPTRELATION_H
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#include "kptduration.h"
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#include <qstring.h>
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class QCanvas;
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class QDomElement;
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namespace KPlato
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{
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class Node;
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class Project;
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class PertCanvas;
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/**
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* The relation class couples a 2 nodes together which are dependent on each other.
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* If for example you have a project to build a house, the node that represents the
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* adding of the roof is dependent on the node that represents the building of the walls.
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* The roof can't be put up if the walls are not there yet.
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* We actually have a number of relationtypes so this relation can be used in different manners.
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*/
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class Relation {
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public:
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enum Type { FinishStart, FinishFinish, StartStart };
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Relation(Node *parent, Node *child, Type type, Duration lag);
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Relation(Node *parent=0, Node *child=0, Type type=FinishStart);
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Relation(Relation *rel);
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/**
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* When deleted the relation will remove itself from
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* the parent- and child nodes lists
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*/
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virtual ~Relation();
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void setType(Type );
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Type type() const { return m_type; }
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/** returns the lag.
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* The lag of a relation is the time it takes between the parent starting/stopping
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* and the start of the child.
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*/
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const Duration &lag() const { return m_lag; }
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void setLag(Duration lag) { m_lag = lag; }
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/**
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* @return The parent dependent node.
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*/
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Node *parent() const { return m_parent; }
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/**
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* @return The child dependent node.
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*/
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Node *child() const { return m_child; }
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enum Result {
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SUCCESS = 0l,
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HASCHILDREN = 1l,
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NOTIMPL = 2l
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};
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bool load(QDomElement &element, Project &project);
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void save(QDomElement &element) const;
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protected: // variables
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Node *m_parent;
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Node *m_child;
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Type m_type;
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Duration m_lag;
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private:
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QString m_parentId;
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#ifndef NDEBUG
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public:
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void printDebug(QCString indent);
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#endif
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};
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class ProxyRelation : public Relation
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{
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public:
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ProxyRelation(Node *parent, Node *child, Relation::Type type, Duration lag)
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: Relation(parent, child, type, lag)
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{}
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~ProxyRelation() { m_parent = 0; m_child = 0;}
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};
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} //KPlato namespace
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#endif
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