Source Code Cross Referenced for DateControl.java in  » ERP-CRM-Financial » jmoney » net » sf » jmoney » fields » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ERP CRM Financial » jmoney » net.sf.jmoney.fields 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *
003:         *  JMoney - A Personal Finance Manager
004:         *  Copyright (c) 2004 Nigel Westbury <westbury@users.sourceforge.net>
005:         *
006:         *
007:         *  This program is free software; you can redistribute it and/or modify
008:         *  it under the terms of the GNU General Public License as published by
009:         *  the Free Software Foundation; either version 2 of the License, or
010:         *  (at your option) any later version.
011:         *
012:         *  This program is distributed in the hope that it will be useful,
013:         *  but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         *  GNU General Public License for more details.
016:         *
017:         *  You should have received a copy of the GNU General Public License
018:         *  along with this program; if not, write to the Free Software
019:         *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
020:         *
021:         */
022:
023:        package net.sf.jmoney.fields;
024:
025:        import java.util.Calendar;
026:        import java.util.Date;
027:
028:        import net.sf.jmoney.JMoneyPlugin;
029:        import net.sf.jmoney.VerySimpleDateFormat;
030:
031:        import org.eclipse.jface.resource.ImageDescriptor;
032:        import org.eclipse.swt.SWT;
033:        import org.eclipse.swt.events.KeyAdapter;
034:        import org.eclipse.swt.events.KeyEvent;
035:        import org.eclipse.swt.events.ModifyListener;
036:        import org.eclipse.swt.events.SelectionAdapter;
037:        import org.eclipse.swt.events.SelectionEvent;
038:        import org.eclipse.swt.events.SelectionListener;
039:        import org.eclipse.swt.events.ShellAdapter;
040:        import org.eclipse.swt.events.ShellEvent;
041:        import org.eclipse.swt.graphics.Image;
042:        import org.eclipse.swt.graphics.Point;
043:        import org.eclipse.swt.graphics.Rectangle;
044:        import org.eclipse.swt.layout.RowLayout;
045:        import org.eclipse.swt.widgets.Button;
046:        import org.eclipse.swt.widgets.Composite;
047:        import org.eclipse.swt.widgets.DateTime;
048:        import org.eclipse.swt.widgets.Display;
049:        import org.eclipse.swt.widgets.Layout;
050:        import org.eclipse.swt.widgets.Shell;
051:        import org.eclipse.swt.widgets.Text;
052:
053:        /**
054:         * A control for entering dates.  This control contains both a
055:         * text box and a button to the right that pops up a calendar.
056:         * <P>
057:         * This control uses the current date format set in the JMoney
058:         * preferences.
059:         * 
060:         * @author Nigel Westbury
061:         */
062:        public class DateControl extends DateComposite {
063:
064:            // TODO Listen to date format changes.
065:            private VerySimpleDateFormat fDateFormat = new VerySimpleDateFormat(
066:                    JMoneyPlugin.getDefault().getDateFormat());
067:
068:            /**
069:             * The text box containing the date
070:             */
071:            private Text textControl;
072:
073:            /**
074:             * The small button to the right of the date that brings up the date picker
075:             */
076:            private Button button;
077:
078:            static private Image threeDotsImage = null;
079:
080:            private DateTime swtcal = null;
081:
082:            /**
083:             * @param parent
084:             * @param style
085:             */
086:            public DateControl(final Composite parent) {
087:                super (parent, SWT.NULL);
088:
089:                setBackgroundMode(SWT.INHERIT_FORCE);
090:
091:                setLayout(new DialogCellLayout());
092:
093:                textControl = new Text(this , SWT.LEFT);
094:
095:                textControl.addKeyListener(new KeyAdapter() {
096:                    @Override
097:                    public void keyPressed(KeyEvent e) {
098:                        // CTRL + and CTRL - increment and decrement the date respectively.
099:                        // It would be even easier for the user the CTRL did not have to be
100:                        // pressed, but then it would not be possible to have a date format
101:                        // that contains '-'.
102:                        if (e.stateMask == SWT.CONTROL
103:                                && (e.character == '+' || e.character == '-')) {
104:
105:                            Calendar calendar = Calendar.getInstance();
106:                            calendar.setTime(fDateFormat.parse(textControl
107:                                    .getText()));
108:
109:                            if (e.character == '+') {
110:                                calendar.add(Calendar.DAY_OF_MONTH, 1);
111:                            } else {
112:                                calendar.add(Calendar.DAY_OF_MONTH, -1);
113:                            }
114:
115:                            textControl.setText(fDateFormat.format(calendar
116:                                    .getTime()));
117:
118:                            e.doit = false;
119:                        }
120:                    }
121:                });
122:
123:                button = new Button(this , SWT.DOWN);
124:                if (threeDotsImage == null) {
125:                    ImageDescriptor descriptor = JMoneyPlugin
126:                            .createImageDescriptor("icons/dots_button.gif");
127:                    threeDotsImage = descriptor.createImage();
128:                }
129:                button.setImage(threeDotsImage);
130:
131:                button.addSelectionListener(new SelectionAdapter() {
132:                    @Override
133:                    public void widgetSelected(SelectionEvent event) {
134:                        final Shell shell = new Shell(parent.getShell(),
135:                                SWT.ON_TOP);
136:                        shell.setLayout(new RowLayout());
137:                        swtcal = new DateTime(shell, SWT.CALENDAR);
138:
139:                        // Set the currently set date into the calendar control
140:                        // (If the parse method returned null then the text control did not
141:                        // contain a valid date.  In this case no date is set into the
142:                        // date picker).
143:                        try {
144:                            String t = textControl.getText();
145:                            Date date = fDateFormat.parse(t);
146:                            Calendar calendar = Calendar.getInstance();
147:                            calendar.setTime(date);
148:                            swtcal.setYear(calendar.get(Calendar.YEAR));
149:                            swtcal.setMonth(calendar.get(Calendar.MONTH));
150:                            swtcal.setDay(calendar.get(Calendar.DAY_OF_MONTH));
151:                        } catch (IllegalArgumentException e) {
152:                            // The date format was invalid.
153:                            // Ignore this error (the calendar control
154:                            // does not require a date to be set).
155:                        }
156:
157:                        swtcal.addSelectionListener(new SelectionListener() {
158:                            public void widgetDefaultSelected(SelectionEvent e) {
159:                                // TODO Auto-generated method stub
160:
161:                            }
162:
163:                            public void widgetSelected(SelectionEvent e) {
164:                                Calendar cal = Calendar.getInstance();
165:
166:                                /*
167:                                 * First reset all fields. Otherwise differences in the time
168:                                 * part, even if the difference is only milliseconds, will cause
169:                                 * the date comparisons to fail.
170:                                 * 
171:                                 * Note also it is critical that whatever is done here is exactly the
172:                                 * same as that done in VerySimpleDateFormat, otherwise dates will not
173:                                 * match.  For example, if you replace clear() here with setTimeInMillis(0)
174:                                 * then we get a different object (because data other than the date and time
175:                                 * such as time zone information will be different).
176:                                 */
177:                                cal.clear();
178:
179:                                cal.set(swtcal.getYear(), swtcal.getMonth(),
180:                                        swtcal.getDay());
181:                                Date date = cal.getTime();
182:                                textControl.setText(fDateFormat.format(date));
183:                            }
184:                        });
185:
186:                        shell.pack();
187:
188:                        // Position the calendar shell below the date control,
189:                        // unless the date control is so near the bottom of the display that
190:                        // the calendar control would go off the bottom of the display,
191:                        // in which case position the calendar shell above the date control.
192:                        Display display = getDisplay();
193:                        Rectangle rect = display.map(parent, null, getBounds());
194:                        int calendarShellHeight = shell.getSize().y;
195:                        if (rect.y + rect.height + calendarShellHeight <= display
196:                                .getBounds().height) {
197:                            shell.setLocation(rect.x, rect.y + rect.height);
198:                        } else {
199:                            shell.setLocation(rect.x, rect.y
200:                                    - calendarShellHeight);
201:                        }
202:
203:                        shell.open();
204:
205:                        shell.addShellListener(new ShellAdapter() {
206:                            @Override
207:                            public void shellDeactivated(ShellEvent e) {
208:                                shell.close();
209:                                swtcal = null;
210:                            }
211:                        });
212:                    }
213:                });
214:            }
215:
216:            /**
217:             * Internal class for laying out the dialog.
218:             */
219:            private class DialogCellLayout extends Layout {
220:                @Override
221:                public void layout(Composite editor, boolean force) {
222:                    Rectangle bounds = editor.getClientArea();
223:                    Point size = textControl.computeSize(SWT.DEFAULT,
224:                            SWT.DEFAULT, force);
225:                    textControl.setBounds(0, 0, bounds.width - size.y,
226:                            bounds.height);
227:                    button.setBounds(bounds.width - size.y, 0, size.y,
228:                            bounds.height);
229:                }
230:
231:                @Override
232:                public Point computeSize(Composite editor, int wHint,
233:                        int hHint, boolean force) {
234:                    if (JMoneyPlugin.DEBUG)
235:                        System.out.println("wHint =" + wHint + ", " + hHint);
236:                    if (wHint != SWT.DEFAULT && hHint != SWT.DEFAULT)
237:                        return new Point(wHint, hHint);
238:                    Point contentsSize = textControl.computeSize(SWT.DEFAULT,
239:                            SWT.DEFAULT, force);
240:                    Point buttonSize = button.computeSize(SWT.DEFAULT,
241:                            SWT.DEFAULT, force);
242:                    if (JMoneyPlugin.DEBUG)
243:                        System.out.println("contents =" + contentsSize.x + ", "
244:                                + contentsSize.y);
245:                    if (JMoneyPlugin.DEBUG)
246:                        System.out.println("contents =" + buttonSize.x + ", "
247:                                + buttonSize.y);
248:                    // Just return the button width to ensure the button is not clipped
249:                    // if the label is long.  Date text needs 60
250:                    // The label will just use whatever extra width there is
251:                    Point result = new Point(60 + buttonSize.x,
252:                    //							        Math.max(contentsSize.y, buttonSize.y));
253:                            contentsSize.y);
254:                    return result;
255:                }
256:            }
257:
258:            /**
259:             * @param object
260:             */
261:            @Override
262:            public void setDate(Date date) {
263:                if (date == null) {
264:                    textControl.setText("");
265:                } else {
266:                    this .textControl.setText(fDateFormat.format(date));
267:                }
268:            }
269:
270:            /**
271:             * @return the date, or null if a valid date is not set in
272:             * 				the control
273:             */
274:            @Override
275:            public Date getDate() {
276:                String text = textControl.getText();
277:                try {
278:                    return fDateFormat.parse(text);
279:                } catch (IllegalArgumentException e) {
280:                    return null;
281:                }
282:            }
283:
284:            /**
285:             * @param listener
286:             */
287:            public void addModifyListener(ModifyListener listener) {
288:                textControl.addModifyListener(listener);
289:            }
290:
291:            /**
292:             * @param listener
293:             */
294:            public void removeModifyListener(ModifyListener listener) {
295:                textControl.removeModifyListener(listener);
296:            }
297:        }
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