265 lines
7.6 KiB
Java
265 lines
7.6 KiB
Java
//This file is part of SECONDO.
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//Copyright (C) 2004, University in Hagen, Department of Computer Science,
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//Database Systems for New Applications.
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//SECONDO is free software; you can redistribute it and/or modify
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//it under the terms of the GNU General Public License as published by
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//the Free Software Foundation; either version 2 of the License, or
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//(at your option) any later version.
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//SECONDO 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
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//GNU General Public License for more details.
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//You should have received a copy of the GNU General Public License
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//along with SECONDO; if not, write to the Free Software
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//Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package viewer.hoese.algebras;
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import sj.lang.ListExpr;
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import viewer.*;
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import viewer.hoese.*;
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import java.util.*;
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import javax.swing.*;
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import java.awt.*;
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import javax.swing.border.*;
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import tools.Reporter;
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/**
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* A displayclass for the movingbool-type (spatiotemp algebra), alphanumeric with TimePanel
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*/
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public class Dsplmovingbool extends DsplGeneric
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implements LabelAttribute, RenderAttribute,Timed,Function,ExternDisplay {
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Interval TimeBounds;
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boolean err = true;
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boolean defined;
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Vector Intervals = new Vector(10, 5);
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Vector Bools = new Vector(10, 5);
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private static final Double VALUE_NOT_DEFINED = null;
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private static final Double VALUE_TRUE = new Double(1);
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private static final Double VALUE_FALSE = new Double(0);
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private static FunctionFrame functionframe = new FunctionFrame();
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/**
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* A method of the Timed-Interface to render the content of the TimePanel
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* @param PixelTime pixel per hour
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* @return A JPanel component with the renderer
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* @see <a href="Dsplmovingboolsrc.html#getTimeRenderer">Source</a>
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*/
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public JPanel getTimeRenderer (double PixelTime) {
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JPanel jp = new JPanel(null);
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if (Intervals == null)
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return null;
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ListIterator li = Intervals.listIterator();
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int cnt = 0;
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while (li.hasNext()) {
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Interval in = (Interval)li.next();
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int start = (int)((in.getStart() - TimeBounds.getStart())*PixelTime);
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int end = (int)((in.getEnd() - TimeBounds.getStart())*PixelTime);
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String bs = Bools.elementAt(cnt++).toString();
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JLabel jc = new JLabel(bs);
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jc.setFont(new Font("Dialog", Font.PLAIN, 12));
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jc.setForeground(Color.black);
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jc.setOpaque(true);
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jc.setBackground(Color.yellow);
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jc.setPreferredSize(new Dimension(1, 18));
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jc.setBorder(new MatteBorder(2, (in.isLeftclosed()) ? 2 : 0, 2, (in.isRightclosed()) ?
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2 : 0, Color.black));
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Dimension d = jc.getPreferredSize();
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jc.setBounds(start, (int)d.getHeight()*0 + 7, end - start, (int)d.getHeight());
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jc.setToolTipText(LEUtils.convertTimeToString(in.getStart()) + "..." +
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LEUtils.convertTimeToString(in.getEnd()) + "=" + bs);
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jp.setPreferredSize(new Dimension((int)((TimeBounds.getEnd() - TimeBounds.getStart())*PixelTime),
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25));
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jp.add(jc);
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}
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return jp;
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}
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public Interval getBoundingInterval(){
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return TimeBounds;
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}
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/** returns the definition time interval **/
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public Interval getInterval(){
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return TimeBounds;
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}
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/** returns the value converted into a double **/
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public Double getValueAt(double time){
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if(err | !defined){
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return VALUE_NOT_DEFINED;
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}
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int index = IntervalSearch.getTimeIndex(time,Intervals);
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if(index<0){
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return VALUE_NOT_DEFINED;
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}
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if( ((Boolean)Bools.get(index)).booleanValue()){
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return VALUE_TRUE;
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} else{
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return VALUE_FALSE;
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}
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}
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/**
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* Scans the representation of a movingbool datatype
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* @param v A list of time-intervals with a bool value
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* @see sj.lang.ListExpr
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* @see <a href="Dsplmovingboolsrc.html#ScanValue">Source</a>
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*/
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public void ScanValue (ListExpr v) {
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if(isUndefined(v)){
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defined=false;
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return;
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}
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defined = true;
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while (!v.isEmpty()) {
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ListExpr le = v.first();
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int len = le.listLength();
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ListExpr value;
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Interval in;
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if (len == 5){
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in = LEUtils.readInterval(ListExpr.fourElemList(le.first(),
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le.second(), le.third(), le.fourth()));
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value = le.fifth();
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} else if(len==2){
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in = LEUtils.readInterval(le.first());
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value = le.second();
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} else{ // wrong list length
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return;
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}
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if (in == null)
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return;
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Intervals.add(in);
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if (value.atomType() != ListExpr.BOOL_ATOM)
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return;
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boolean b = value.boolValue();
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Bools.add(new Boolean(b));
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v = v.rest();
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}
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defined = true;
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err = false;
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}
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public void init (String name, int nameWidth, int indent, ListExpr type, ListExpr value, QueryResult qr) {
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AttrName = extendString(name,nameWidth, indent);
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ScanValue(value);
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if (err) {
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Reporter.writeError("Error in ListExpr :parsing aborted");
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qr.addEntry(new String("(" + AttrName + ": TA(MBool))"));
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defined=false;
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return;
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}
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else
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qr.addEntry(this);
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TimeBounds = null;
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for (int i = 0; i < Intervals.size(); i++) {
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Interval in = (Interval)Intervals.elementAt(i);
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if(!in.isInfinite()){
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if (TimeBounds == null) {
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TimeBounds = in;
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}
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else {
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TimeBounds = TimeBounds.union(in);
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}
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}
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}
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}
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/** The text representation of this object
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* @see <a href="Dsplmovingboolsrc.html#toString">Source</a>
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*/
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public String toString () {
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return AttrName + ": TA(MBool) ";
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}
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/** A method of the Timed-Interface
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* @return The Vector representation of the time intervals this instance is defined at
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* @see <a href="Dsplmovingboolsrc.html#getIntervals">Source</a>
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*/
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public Vector getIntervals(){
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return Intervals;
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}
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/** implementation of the LabelAttribute interface **/
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public String getLabel(double time){
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int index = IntervalSearch.getTimeIndex(time,Intervals);
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if(index<0){
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return "undefined";
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}
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return Bools.get(index).toString();
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}
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/* Implementation of the renderAttribute interface */
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public boolean mayBeDefined(){
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// the min and max render functions returns valid values in
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// each case, so we can return true even when this instance is
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// undefined
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return true;
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}
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public boolean isDefined(double time){
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// we return in each case valid values in the getRenderValue function
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return true;
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}
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public double getMinRenderValue(){
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return 0;
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}
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public double getMaxRenderValue(){
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return 1;
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}
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public double getRenderValue(double time){
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if(!defined){
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return 0.5; // value for undefined
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}
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int index = IntervalSearch.getTimeIndex(time,Intervals);
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if(index<0){
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return 0.5;
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}
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boolean v = ((Boolean)Bools.get(index)).booleanValue();
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return v?1:0;
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}
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// implementing the externalDisplay interface
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public boolean isExternDisplayed(){
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return (functionframe.isVisible() && this.equals(functionframe.getSource()));
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}
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public void displayExtern(){
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if(err){
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Reporter.showInfo("cannot display because list representation is invalid");
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return;
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}
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if(!defined){
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Reporter.showInfo("the object is not defined at all instants");
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return;
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}
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if(TimeBounds!=null){
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functionframe.setSource(this);
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functionframe.setVisible(true);
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functionframe.toFront();
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}else{
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Reporter.showInfo("The moving bool is empty");
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}
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}
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}
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