244 lines
6.7 KiB
Java
244 lines
6.7 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 javax.swing.border.*;
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import java.awt.*;
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import java.awt.event.ActionListener;
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import java.awt.event.ActionEvent;
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import tools.Reporter;
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/**
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* A displayclass for the periods-type (spatiotemp algebra), alphanumeric with TimePanel
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*/
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public class Dsplperiods extends DsplGeneric implements Timed, ExternDisplay {
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protected Vector Intervals = new Vector(10, 5);
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protected Interval TimeBounds;
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protected boolean err=true;
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protected boolean defined;
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protected String entry;
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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="Dsplperiodssrc.html#getTimeRenderer">Source</a>
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*/
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public JPanel getTimeRenderer (double PixelTime) {
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if(!defined){
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return new JPanel();
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}
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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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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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JLabel jc = new JLabel();
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jc.setOpaque(true);
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jc.setBackground(Color.yellow);
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jc.setPreferredSize(new Dimension(1, 10));
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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 + 15, end - start, (int)d.getHeight());
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jc.setToolTipText(LEUtils.convertTimeToString(in.getStart()) + "..." +
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LEUtils.convertTimeToString(in.getEnd()));
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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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/** returns the Timebounds of this object **/
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public Interval getBoundingInterval(){
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return TimeBounds;
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}
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/**
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* Scans the representation of a periods datatype and constructs the Intervals Vector
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* @param v A list of time intervals
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* @see sj.lang.ListExpr
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* @see <a href="Dsplperiodssrc.html#ScanValue">Source</a>
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*/
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public String getString (ListExpr v) {
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if(isUndefined(v)){
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defined = false;
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err=false;
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return "undefined";
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}
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while (!v.isEmpty()) {
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ListExpr le = v.first();
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if (le.listLength() != 4){
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err=true;
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defined=false;
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return "<error>";
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}
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Interval in = LEUtils.readInterval(le);
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if (in == null){
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err=true;
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defined=false;
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return "<error>";
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}
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Intervals.add(in);
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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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return "periods";
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}
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public void init (String name, int nameWidth, int indent,
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ListExpr type, ListExpr value, QueryResult qr) {
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String t = extendString(name, nameWidth, indent);
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String v = getString(value);
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entry = t+":"+v;
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if(err){
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qr.addEntry(entry);
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return;
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}
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qr.addEntry(this);
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computeTimeBounds();
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}
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/** computes the timebounds for this objects **/
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private void computeTimeBounds(){
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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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public String toString(){
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return entry;
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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="Dsplperiodssrc.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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public boolean isExternDisplayed(){
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if(display==null){
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return false;
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}
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return display.isVisible() && this.equals(display.getSource());
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}
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public void displayExtern(){
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if(display==null){
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display = new Display();
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}
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display.setSource(this);
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display.setVisible(true);
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}
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private static Display display;
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static class Display extends JFrame{
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private Dsplperiods src;
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private JTextArea textArea;
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private JButton closeBtn;
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Display(){
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getContentPane().setLayout(new BorderLayout());
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textArea = new JTextArea(40,20);
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textArea.setEditable(false);
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JScrollPane sp = new JScrollPane(textArea);
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getContentPane().add(sp, BorderLayout.CENTER);
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closeBtn = new JButton("close");
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closeBtn.addActionListener(new ActionListener(){
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public void actionPerformed(ActionEvent evt){
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Display.this.setVisible(false);
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}
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});
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getContentPane().add(closeBtn,BorderLayout.SOUTH);
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setSize(640,480);
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}
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Dsplperiods getSource(){
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return src;
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}
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void setSource(Dsplperiods src){
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this.src = src;
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recomputeText();
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}
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private void recomputeText(){
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if(src==null){
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textArea.setText("No periods available");
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return;
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}
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if(src.err){
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textArea.setText("Wrong format of a periods value detected");
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return;
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}
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if(!src.defined){
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textArea.setText("Undefined");
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return;
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}
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if(src.Intervals.size()==0){
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textArea.setText("empty");
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return;
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}
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StringBuffer buff = new StringBuffer();
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for(int i=0;i<src.Intervals.size();i++){
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Interval iv = (Interval) src.Intervals.get(i);
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buff.append(""+iv+"\n");
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}
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textArea.setText(buff.toString());
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}
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}
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}
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