/* * Cay S. Horstmann & Gary Cornell, Core Java * Published By Sun Microsystems Press/Prentice-Hall * Copyright (C) 1997 Sun Microsystems Inc. * All Rights Reserved. * * Permission to use, copy, modify, and distribute this * software and its documentation for NON-COMMERCIAL purposes * and without fee is hereby granted provided that this * copyright notice appears in all copies. * * THE AUTHORS AND PUBLISHER MAKE NO REPRESENTATIONS OR * WARRANTIES ABOUT THE SUITABILITY OF THE SOFTWARE, EITHER * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE AUTHORS * AND PUBLISHER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED * BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING * THIS SOFTWARE OR ITS DERIVATIVES. */ /** * @version 1.10 27 Oct 1997 * @author Cay Horstmann */ import java.awt.*; import java.awt.event.*; import java.beans.*; import java.io.*; import java.text.*; import java.util.*; public class ChartBeanCustomizer extends Panel implements Customizer { public ChartBeanCustomizer() { Panel p; setLayout(new BorderLayout()); final Panel cardPanel = new Panel(); final CardLayout cardLayout = new CardLayout(); cardPanel.setLayout(cardLayout); Panel card = new Panel(); card.setLayout(new BorderLayout()); TextArea fileInfo = new TextArea( "You can read data values for the chart\n" + "from a text file. The file must contain one\n" + "data value in each line.", 3, 50, TextArea.SCROLLBARS_NONE); fileInfo.setEditable(false); card.add(fileInfo, "Center"); Button loadButton = new Button("Load"); loadButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { loadFile(); } }); p = new Panel(); p.add(loadButton); card.add(p, "South"); cardPanel.add(card, "0"); add(cardPanel, "Center"); card = new Panel(); card.setLayout(new GridBagLayout()); CheckboxGroup g = new CheckboxGroup(); normal = new Checkbox("Normal", g, true); inverse = new Checkbox("Inverse", g, false); p = new Panel(); p.add(normal); p.add(inverse); normal.addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent evt) { if (evt.getStateChange() == ItemEvent.SELECTED) setInverse(false); } }); inverse.addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent evt) { if (evt.getStateChange() == ItemEvent.SELECTED) setInverse(true); } }); colorEditor = PropertyEditorManager.findEditor(Color.class); colorEditor.addPropertyChangeListener (new PropertyChangeListener() { public void propertyChange(PropertyChangeEvent evt) { setGraphColor((Color)colorEditor.getValue()); } }); GridBagConstraints gbc = new GridBagConstraints(); gbc.weightx = 100; gbc.weighty = 100; gbc.fill = GridBagConstraints.NONE; gbc.anchor = GridBagConstraints.WEST; add(card, new Label("Set Color"), gbc, 0, 0, 1, 1); add(card, p, gbc, 0, 1, 1, 1); add(card, colorEditor.getCustomEditor(), gbc, 0, 2, 1, 1); cardPanel.add(card, "1"); card = new Panel(); card.setLayout(new GridBagLayout()); positionGroup = new CheckboxGroup(); position = new Checkbox[3]; position[0] = new Checkbox("Left", g, false); position[1] = new Checkbox("Center", g, true); position[2] = new Checkbox("Right", g, false); p = new Panel(); for (int i = 0; i < position.length; i++) { final int value = i; p.add(position[i]); position[i].addItemListener(new ItemListener() { public void itemStateChanged(ItemEvent evt) { if (evt.getStateChange() == ItemEvent.SELECTED) setTitlePosition(value); } }); } titleField = new TextField(); titleField.addTextListener(new TextListener() { public void textValueChanged(TextEvent evt) { setTitle(titleField.getText()); } }); add(card, new Label("Set Title"), gbc, 0, 0, 1, 1); add(card, p, gbc, 0, 1, 1, 1); gbc.fill = GridBagConstraints.HORIZONTAL; add(card, titleField, gbc, 0, 2, 1, 1); cardPanel.add(card, "2"); p = new Panel(); Button nextButton = new Button("Next"); Button previousButton = new Button("Previous"); nextButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { cardLayout.next(cardPanel); } }); previousButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent evt) { cardLayout.previous(cardPanel); } }); p.add(previousButton); p.add(nextButton); add(p, "South"); } public static void add(Container t, Component c, GridBagConstraints gbc, int x, int y, int w, int h) { gbc.gridx = x; gbc.gridy = y; gbc.gridwidth = w; gbc.gridheight = h; t.add(c, gbc); } public void loadFile() { Container c = getParent(); while (c != null && !(c instanceof Frame)) c = c.getParent(); FileDialog dlg = new FileDialog((Frame)c, "Open data file", FileDialog.LOAD); dlg.show(); String filename = dlg.getFile(); if (filename != null) { filename = dlg.getDirectory() + filename; NumberFormat fmt = NumberFormat.getNumberInstance(); try { Vector v = new Vector(); BufferedReader in = new BufferedReader(new FileReader(filename)); String line; while ((line = in.readLine()) != null) v.addElement(fmt.parse(line)); double[] d = new double[v.size()]; for (int i = 0; i < d.length; i++) d[i] = ((Number)v.elementAt(i)).doubleValue(); setValues(d); } catch(IOException e) {} catch(ParseException e) {} } } public void setTitle(String newValue) { String oldValue = bean.getTitle(); bean.setTitle(newValue); pcs.firePropertyChange("title", oldValue, newValue); } public void setTitlePosition(int i) { Integer oldValue = new Integer(bean.getTitlePosition()); Integer newValue = new Integer(i); bean.setTitlePosition(i); pcs.firePropertyChange("title", oldValue, newValue); } public void setInverse(boolean b) { Boolean oldValue = new Boolean(bean.isInverse()); Boolean newValue = new Boolean(b); bean.setInverse(b); pcs.firePropertyChange("inverse", oldValue, newValue); } public void setValues(double[] newValue) { double[] oldValue = bean.getValues(); bean.setValues(newValue); pcs.firePropertyChange("inverse", oldValue, newValue); } public void setGraphColor(Color newValue) { Color oldValue = bean.getGraphColor(); bean.setGraphColor(newValue); pcs.firePropertyChange("inverse", oldValue, newValue); } public Dimension getPreferredSize() { return new Dimension(300, 200); } public void setObject(Object obj) { bean = (ChartBean)obj; normal.setState(!bean.isInverse()); inverse.setState(bean.isInverse()); titleField.setText(bean.getTitle()); positionGroup.setSelectedCheckbox (position[bean.getTitlePosition()]); colorEditor.setValue(bean.getGraphColor()); } public void addPropertyChangeListener (PropertyChangeListener l) { pcs.addPropertyChangeListener(l); } public void removePropertyChangeListener (PropertyChangeListener l) { pcs.removePropertyChangeListener(l); } ChartBean bean; PropertyChangeSupport pcs = new PropertyChangeSupport(this); PropertyEditor colorEditor; Checkbox normal; Checkbox inverse; Checkbox[] position; CheckboxGroup positionGroup; TextField titleField; }