com.sun.electric.database.constraint.Constraints Maven / Gradle / Ivy
/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: Constraints.java
*
* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.database.constraint;
import com.sun.electric.database.EditingPreferences;
import com.sun.electric.database.IdMapper;
import com.sun.electric.database.ImmutableArcInst;
import com.sun.electric.database.ImmutableCell;
import com.sun.electric.database.ImmutableExport;
import com.sun.electric.database.ImmutableLibrary;
import com.sun.electric.database.ImmutableNodeInst;
import com.sun.electric.database.Snapshot;
import com.sun.electric.database.hierarchy.Cell;
import com.sun.electric.database.hierarchy.Export;
import com.sun.electric.database.hierarchy.Library;
import com.sun.electric.database.topology.ArcInst;
import com.sun.electric.database.topology.NodeInst;
import com.sun.electric.database.variable.ElectricObject;
/**
* Top-level class to handle constraints.
* The methods here are overridden by the actual constraint solver.
* At this time, there is only one solver: Layout.
*/
public abstract class Constraints {
private static Constraints curConstraint = new Layout();
// /**
// * Method to set a new current constraint system.
// * @param con the constraint system to become the current one.
// */
// public static void setCurrent(Constraints con) { curConstraint = con; }
/**
* Method to return the current constraint system.
* return the current constraint system.
*/
public static Constraints getCurrent() {
return curConstraint;
}
/**
* Method to initialize a constraint system.
*/
public void init() {
}
/**
* Method to make a request of a constraint system (not used).
* @param cmd the command request.
*/
public void request(String cmd) {
}
/**
* Method to examine a cell because it has changed.
* @param cell the Cell to examine.
*/
public void examineCell(Cell cell) {
}
/**
* Method to give a constraint system a chance to run.
*/
public void slice() {
}
/**
* Method to handle the start of a batch of changes.
* @param initialSnapshot snapshot before job changes.
*/
public void startBatch(Snapshot initialSnapshot) {
}
/**
* Method to handle the end of a batch of changes.
*/
public abstract void endBatch(String userName, EditingPreferences ep);
/**
* Method to announce a change to a NodeInst.
* @param ni the NodeInst that was changed.
* @param oD the old contents of the NodeInst.
*/
public void modifyNodeInst(NodeInst ni, ImmutableNodeInst oD) {
}
/**
* Method to handle a change to an ArcInst.
* @param ai the ArcInst that changed.
* @param oD the old contents of the ArcInst.
*/
public void modifyArcInst(ArcInst ai, ImmutableArcInst oD) {
}
/**
* Method to handle a change to an Export.
* @param pp the Export that moved.
* @param oD the old contents of the Export.
*/
public void modifyExport(Export pp, ImmutableExport oD) {
}
/**
* Method to announce a change to a Cell.
* @param cell the Cell that was changed.
* @param oD the old contents of the Cell.
*/
public void modifyCell(Cell cell, ImmutableCell oD) {
}
/**
* Method to announce a move of a Cell int CellGroup.
* @param cell the cell that was moved.
* @param oCellGroup the old CellGroup of the Cell.
*/
public void modifyCellGroup(Cell cell, Cell.CellGroup oCellGroup) {
}
/**
* Method to announce a change to a Library.
* @param lib the Library that was changed.
* @param oldD the old contents of the Library.
*/
public void modifyLibrary(Library lib, ImmutableLibrary oldD) {
}
/**
* Method to handle the creation of a new ElectricObject.
* @param obj the ElectricObject that was just created.
*/
public void newObject(ElectricObject obj) {
}
/**
* Method to handle the deletion of an ElectricObject.
* @param obj the ElectricObject that was just deleted.
*/
public void killObject(ElectricObject obj) {
}
/**
* Method to handle the renaming of an ElectricObject.
* @param obj the ElectricObject that was renamed.
* @param oldName the former name of that ElectricObject.
*/
public void renameObject(ElectricObject obj, Object oldName) {
}
/**
* Method to request that an object be redrawn.
* @param obj the ElectricObject to be redrawn.
*/
public void redrawObject(ElectricObject obj) {
}
/**
* Method to announce that a Library has been read.
* @param lib the Library that was read.
*/
public void readLibrary(Library lib) {
}
/**
* Method to announce that a Library is about to be erased.
* @param lib the Library that will be erased.
*/
public void eraseLibrary(Library lib) {
}
/**
* Method to announce that a Library is about to be written to disk.
* @param lib the Library that will be saved.
*/
public void writeLibrary(Library lib) {
}
/**
* Method to announce than Ids were renamed.
* @param idMapper mapper from old Ids to new Ids.
*/
public void renameIds(IdMapper idMapper) {
}
}