Source Code Cross Referenced for DefaultNumberAxisEditor.java in  » Chart » jfreechart » org » jfree » chart » editor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.chart.editor 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ===========================================================
002:         * JFreeChart : a free chart library for the Java(tm) platform
003:         * ===========================================================
004:         *
005:         * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006:         *
007:         * Project Info:  http://www.jfree.org/jfreechart/index.html
008:         *
009:         * This library is free software; you can redistribute it and/or modify it 
010:         * under the terms of the GNU Lesser General Public License as published by 
011:         * the Free Software Foundation; either version 2.1 of the License, or 
012:         * (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful, but 
015:         * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016:         * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017:         * License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser General Public
020:         * License along with this library; if not, write to the Free Software
021:         * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022:         * USA.  
023:         *
024:         * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025:         * in the United States and other countries.]
026:         *
027:         * ----------------------------
028:         * DefaultNumberAxisEditor.java
029:         * ----------------------------
030:         * (C) Copyright 2005, Object Refinery Limited and Contributors.
031:         *
032:         * Original Author:  David Gilbert (for Object Refinery Limited);
033:         * Contributor(s):   Arnaud Lelievre;
034:         *
035:         * $Id: DefaultNumberAxisEditor.java,v 1.1.2.1 2005/11/24 16:11:48 mungady Exp $
036:         *
037:         * Changes:
038:         * --------
039:         * 24-Nov-2005 : Version 1, based on NumberAxisPropertyEditor (DG);
040:         */
041:
042:        package org.jfree.chart.editor;
043:
044:        import java.awt.BasicStroke;
045:        import java.awt.Color;
046:        import java.awt.event.ActionEvent;
047:        import java.awt.event.FocusEvent;
048:        import java.awt.event.FocusListener;
049:        import java.util.ResourceBundle;
050:
051:        import javax.swing.BorderFactory;
052:        import javax.swing.JCheckBox;
053:        import javax.swing.JColorChooser;
054:        import javax.swing.JLabel;
055:        import javax.swing.JOptionPane;
056:        import javax.swing.JPanel;
057:        import javax.swing.JTabbedPane;
058:        import javax.swing.JTextField;
059:
060:        import org.jfree.chart.axis.Axis;
061:        import org.jfree.chart.axis.NumberAxis;
062:        import org.jfree.layout.LCBLayout;
063:        import org.jfree.ui.PaintSample;
064:        import org.jfree.ui.StrokeChooserPanel;
065:        import org.jfree.ui.StrokeSample;
066:
067:        /**
068:         * A panel for editing the properties of a value axis.
069:         */
070:        class DefaultNumberAxisEditor extends DefaultAxisEditor implements 
071:                FocusListener {
072:
073:            /** A flag that indicates whether or not the axis range is determined
074:             *  automatically.
075:             */
076:            private boolean autoRange;
077:
078:            /** The lowest value in the axis range. */
079:            private double minimumValue;
080:
081:            /** The highest value in the axis range. */
082:            private double maximumValue;
083:
084:            /** A checkbox that indicates whether or not the axis range is determined
085:             *  automatically.
086:             */
087:            private JCheckBox autoRangeCheckBox;
088:
089:            /** A text field for entering the minimum value in the axis range. */
090:            private JTextField minimumRangeValue;
091:
092:            /** A text field for entering the maximum value in the axis range. */
093:            private JTextField maximumRangeValue;
094:
095:            /** The paint selected for drawing the gridlines. */
096:            private PaintSample gridPaintSample;
097:
098:            /** The stroke selected for drawing the gridlines. */
099:            private StrokeSample gridStrokeSample;
100:
101:            /** An array of stroke samples to choose from (since I haven't written a
102:             *  decent StrokeChooser component yet).
103:             */
104:            private StrokeSample[] availableStrokeSamples;
105:
106:            /** The resourceBundle for the localization. */
107:            protected static ResourceBundle localizationResources = ResourceBundle
108:                    .getBundle("org.jfree.chart.editor.LocalizationBundle");
109:
110:            /**
111:             * Standard constructor: builds a property panel for the specified axis.
112:             *
113:             * @param axis  the axis, which should be changed.
114:             */
115:            public DefaultNumberAxisEditor(NumberAxis axis) {
116:
117:                super (axis);
118:
119:                this .autoRange = axis.isAutoRange();
120:                this .minimumValue = axis.getLowerBound();
121:                this .maximumValue = axis.getUpperBound();
122:
123:                this .gridPaintSample = new PaintSample(Color.blue);
124:                this .gridStrokeSample = new StrokeSample(new BasicStroke(1.0f));
125:
126:                this .availableStrokeSamples = new StrokeSample[3];
127:                this .availableStrokeSamples[0] = new StrokeSample(
128:                        new BasicStroke(1.0f));
129:                this .availableStrokeSamples[1] = new StrokeSample(
130:                        new BasicStroke(2.0f));
131:                this .availableStrokeSamples[2] = new StrokeSample(
132:                        new BasicStroke(3.0f));
133:
134:                JTabbedPane other = getOtherTabs();
135:
136:                JPanel range = new JPanel(new LCBLayout(3));
137:                range.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
138:
139:                range.add(new JPanel());
140:                this .autoRangeCheckBox = new JCheckBox(localizationResources
141:                        .getString("Auto-adjust_range"), this .autoRange);
142:                this .autoRangeCheckBox.setActionCommand("AutoRangeOnOff");
143:                this .autoRangeCheckBox.addActionListener(this );
144:                range.add(this .autoRangeCheckBox);
145:                range.add(new JPanel());
146:
147:                range.add(new JLabel(localizationResources
148:                        .getString("Minimum_range_value")));
149:                this .minimumRangeValue = new JTextField(Double
150:                        .toString(this .minimumValue));
151:                this .minimumRangeValue.setEnabled(!this .autoRange);
152:                this .minimumRangeValue.setActionCommand("MinimumRange");
153:                this .minimumRangeValue.addActionListener(this );
154:                this .minimumRangeValue.addFocusListener(this );
155:                range.add(this .minimumRangeValue);
156:                range.add(new JPanel());
157:
158:                range.add(new JLabel(localizationResources
159:                        .getString("Maximum_range_value")));
160:                this .maximumRangeValue = new JTextField(Double
161:                        .toString(this .maximumValue));
162:                this .maximumRangeValue.setEnabled(!this .autoRange);
163:                this .maximumRangeValue.setActionCommand("MaximumRange");
164:                this .maximumRangeValue.addActionListener(this );
165:                this .maximumRangeValue.addFocusListener(this );
166:                range.add(this .maximumRangeValue);
167:                range.add(new JPanel());
168:
169:                other.add(localizationResources.getString("Range"), range);
170:
171:            }
172:
173:            /**
174:             * Returns the current setting of the auto-range property.
175:             *
176:             * @return <code>true</code> if auto range is enabled.
177:             */
178:            public boolean isAutoRange() {
179:                return this .autoRange;
180:            }
181:
182:            /**
183:             * Returns the current setting of the minimum value in the axis range.
184:             *
185:             * @return The current setting of the minimum value in the axis range.
186:             */
187:            public double getMinimumValue() {
188:                return this .minimumValue;
189:            }
190:
191:            /**
192:             * Returns the current setting of the maximum value in the axis range.
193:             *
194:             * @return The current setting of the maximum value in the axis range.
195:             */
196:            public double getMaximumValue() {
197:                return this .maximumValue;
198:            }
199:
200:            /**
201:             * Handles actions from within the property panel.
202:             * @param event an event.
203:             */
204:            public void actionPerformed(ActionEvent event) {
205:                String command = event.getActionCommand();
206:                if (command.equals("GridStroke")) {
207:                    attemptGridStrokeSelection();
208:                } else if (command.equals("GridPaint")) {
209:                    attemptGridPaintSelection();
210:                } else if (command.equals("AutoRangeOnOff")) {
211:                    toggleAutoRange();
212:                } else if (command.equals("MinimumRange")) {
213:                    validateMinimum();
214:                } else if (command.equals("MaximumRange")) {
215:                    validateMaximum();
216:                } else {
217:                    // pass to the super-class for handling
218:                    super .actionPerformed(event);
219:                }
220:            }
221:
222:            /**
223:             * Handle a grid stroke selection.
224:             */
225:            private void attemptGridStrokeSelection() {
226:                StrokeChooserPanel panel = new StrokeChooserPanel(null,
227:                        this .availableStrokeSamples);
228:                int result = JOptionPane
229:                        .showConfirmDialog(this , panel, localizationResources
230:                                .getString("Stroke_Selection"),
231:                                JOptionPane.OK_CANCEL_OPTION,
232:                                JOptionPane.PLAIN_MESSAGE);
233:
234:                if (result == JOptionPane.OK_OPTION) {
235:                    this .gridStrokeSample.setStroke(panel.getSelectedStroke());
236:                }
237:            }
238:
239:            /**
240:             * Handle a grid paint selection.
241:             */
242:            private void attemptGridPaintSelection() {
243:                Color c;
244:                c = JColorChooser.showDialog(this , localizationResources
245:                        .getString("Grid_Color"), Color.blue);
246:                if (c != null) {
247:                    this .gridPaintSample.setPaint(c);
248:                }
249:            }
250:
251:            /**
252:             * Does nothing.
253:             *
254:             * @param event  the event.
255:             */
256:            public void focusGained(FocusEvent event) {
257:                // don't need to do anything
258:            }
259:
260:            /**
261:             *  Revalidates minimum/maximum range.
262:             *
263:             *  @param event  the event.
264:             */
265:            public void focusLost(FocusEvent event) {
266:                if (event.getSource() == this .minimumRangeValue) {
267:                    validateMinimum();
268:                } else if (event.getSource() == this .maximumRangeValue) {
269:                    validateMaximum();
270:                }
271:            }
272:
273:            /**
274:             *  Toggle the auto range setting.
275:             */
276:            public void toggleAutoRange() {
277:                this .autoRange = this .autoRangeCheckBox.isSelected();
278:                if (this .autoRange) {
279:                    this .minimumRangeValue.setText(Double
280:                            .toString(this .minimumValue));
281:                    this .minimumRangeValue.setEnabled(false);
282:                    this .maximumRangeValue.setText(Double
283:                            .toString(this .maximumValue));
284:                    this .maximumRangeValue.setEnabled(false);
285:                } else {
286:                    this .minimumRangeValue.setEnabled(true);
287:                    this .maximumRangeValue.setEnabled(true);
288:                }
289:            }
290:
291:            /**
292:             * Revalidate the range minimum.
293:             */
294:            public void validateMinimum() {
295:                double newMin;
296:                try {
297:                    newMin = Double.parseDouble(this .minimumRangeValue
298:                            .getText());
299:                    if (newMin >= this .maximumValue) {
300:                        newMin = this .minimumValue;
301:                    }
302:                } catch (NumberFormatException e) {
303:                    newMin = this .minimumValue;
304:                }
305:
306:                this .minimumValue = newMin;
307:                this .minimumRangeValue.setText(Double
308:                        .toString(this .minimumValue));
309:            }
310:
311:            /**
312:             * Revalidate the range maximum.
313:             */
314:            public void validateMaximum() {
315:                double newMax;
316:                try {
317:                    newMax = Double.parseDouble(this .maximumRangeValue
318:                            .getText());
319:                    if (newMax <= this .minimumValue) {
320:                        newMax = this .maximumValue;
321:                    }
322:                } catch (NumberFormatException e) {
323:                    newMax = this .maximumValue;
324:                }
325:
326:                this .maximumValue = newMax;
327:                this .maximumRangeValue.setText(Double
328:                        .toString(this .maximumValue));
329:            }
330:
331:            /**
332:             * Sets the properties of the specified axis to match the properties
333:             * defined on this panel.
334:             *
335:             * @param axis  the axis.
336:             */
337:            public void setAxisProperties(Axis axis) {
338:                super .setAxisProperties(axis);
339:                NumberAxis numberAxis = (NumberAxis) axis;
340:                numberAxis.setAutoRange(this.autoRange);
341:                if (!this.autoRange) {
342:                    numberAxis.setRange(this.minimumValue, this.maximumValue);
343:                }
344:            }
345:
346:        }
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