Source Code Cross Referenced for DebitAndCreditColumns.java in  » ERP-CRM-Financial » jmoney » net » sf » jmoney » entrytable » 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.entrytable 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *
003:         *  JMoney - A Personal Finance Manager
004:         *  Copyright (c) 2007 Nigel Westbury <westbury@users.sf.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.entrytable;
024:
025:        import net.sf.jmoney.model2.Commodity;
026:        import net.sf.jmoney.model2.Entry;
027:        import net.sf.jmoney.model2.EntryInfo;
028:        import net.sf.jmoney.model2.ExtendableObject;
029:        import net.sf.jmoney.model2.ScalarPropertyAccessor;
030:        import net.sf.jmoney.model2.SessionChangeAdapter;
031:        import net.sf.jmoney.model2.SessionChangeListener;
032:
033:        import org.eclipse.swt.SWT;
034:        import org.eclipse.swt.events.DisposeEvent;
035:        import org.eclipse.swt.events.DisposeListener;
036:        import org.eclipse.swt.events.FocusListener;
037:        import org.eclipse.swt.events.TraverseEvent;
038:        import org.eclipse.swt.events.TraverseListener;
039:        import org.eclipse.swt.widgets.Composite;
040:        import org.eclipse.swt.widgets.Control;
041:        import org.eclipse.swt.widgets.Text;
042:
043:        /**
044:         * Represents a table column that is either the debit or the credit column.
045:         * Use two instances of this class instead of a single instance of the
046:         * above <code>EntriesSectionProperty</code> class if you want the amount to be
047:         * displayed in separate debit and credit columns.
048:         */
049:        public class DebitAndCreditColumns extends
050:                IndividualBlock<EntryData, BaseEntryRowControl> {
051:
052:            private class DebitAndCreditCellControl implements 
053:                    ICellControl<EntryData> {
054:                private Text textControl;
055:                private Entry entry = null;
056:
057:                private SessionChangeListener amountChangeListener = new SessionChangeAdapter() {
058:                    @Override
059:                    public void objectChanged(ExtendableObject changedObject,
060:                            ScalarPropertyAccessor changedProperty,
061:                            Object oldValue, Object newValue) {
062:                        if (changedObject.equals(entry)
063:                                && changedProperty == EntryInfo
064:                                        .getAmountAccessor()) {
065:                            setControlContent();
066:                        }
067:                    }
068:                };
069:
070:                public DebitAndCreditCellControl(Text textControl) {
071:                    this .textControl = textControl;
072:
073:                    textControl.addDisposeListener(new DisposeListener() {
074:                        public void widgetDisposed(DisposeEvent e) {
075:                            if (entry != null) {
076:                                entry.getDataManager().removeChangeListener(
077:                                        amountChangeListener);
078:                            }
079:                        }
080:                    });
081:                }
082:
083:                public Control getControl() {
084:                    return textControl;
085:                }
086:
087:                public void load(EntryData data) {
088:                    if (entry != null) {
089:                        entry.getDataManager().removeChangeListener(
090:                                amountChangeListener);
091:                    }
092:
093:                    entry = data.getEntry();
094:
095:                    /*
096:                     * We must listen to the model for changes in the value
097:                     * of this property.
098:                     */
099:                    entry.getDataManager().addChangeListener(
100:                            amountChangeListener);
101:
102:                    setControlContent();
103:                }
104:
105:                private void setControlContent() {
106:                    long amount = entry.getAmount();
107:
108:                    /*
109:                     * We need a currency so that we can format the amount. Get the
110:                     * currency from this entry if possible. However, the user may
111:                     * not have yet entered enough information to determine the
112:                     * currency for this entry, in which case use the default
113:                     * currency for this entry table.
114:                     */
115:                    Commodity commodityForFormatting = entry.getCommodity();
116:                    if (commodityForFormatting == null) {
117:                        commodityForFormatting = commodity;
118:                    }
119:
120:                    if (isDebit) {
121:                        // Debit column
122:                        textControl.setText(amount < 0 ? commodityForFormatting
123:                                .format(-amount) : "");
124:                    } else {
125:                        // Credit column
126:                        textControl.setText(amount > 0 ? commodityForFormatting
127:                                .format(amount) : "");
128:                    }
129:                }
130:
131:                public void save() {
132:                    /*
133:                     * We need a currency so that we can parse the amount. Get the
134:                     * currency from this entry if possible. However, the user may
135:                     * not have yet entered enough information to determine the
136:                     * currency for this entry, in which case use the default
137:                     * currency for this entry table.
138:                     */
139:                    Commodity commodityForFormatting = entry.getCommodity();
140:                    if (commodityForFormatting == null) {
141:                        commodityForFormatting = commodity;
142:                    }
143:
144:                    String amountString = textControl.getText();
145:                    long amount = commodityForFormatting.parse(amountString);
146:
147:                    long previousEntryAmount = entry.getAmount();
148:                    long newEntryAmount;
149:
150:                    if (isDebit) {
151:                        if (amount != 0) {
152:                            newEntryAmount = -amount;
153:                        } else {
154:                            if (previousEntryAmount < 0) {
155:                                newEntryAmount = 0;
156:                            } else {
157:                                newEntryAmount = previousEntryAmount;
158:                            }
159:                        }
160:                    } else {
161:                        if (amount != 0) {
162:                            newEntryAmount = amount;
163:                        } else {
164:                            if (previousEntryAmount > 0) {
165:                                newEntryAmount = 0;
166:                            } else {
167:                                newEntryAmount = previousEntryAmount;
168:                            }
169:                        }
170:                    }
171:
172:                    entry.setAmount(newEntryAmount);
173:
174:                    // If there are two entries in the transaction and
175:                    // if both entries have accounts in the same currency or
176:                    // one or other account is not known or one or other account
177:                    // is a multi-currency account then we set the amount in
178:                    // the other entry to be the same but opposite signed amount.
179:
180:                    if (entry.getTransaction().hasTwoEntries()) {
181:                        Entry otherEntry = entry.getTransaction().getOther(
182:                                entry);
183:                        Commodity commodity1 = entry.getCommodity();
184:                        Commodity commodity2 = otherEntry.getCommodity();
185:                        if (commodity1 == null || commodity2 == null
186:                                || commodity1.equals(commodity2)) {
187:                            otherEntry.setAmount(-newEntryAmount);
188:                        }
189:                    }
190:                }
191:
192:                public void setFocusListener(FocusListener controlFocusListener) {
193:                    // Nothing to do
194:                }
195:            }
196:
197:            private String id;
198:            private Commodity commodity;
199:            private boolean isDebit;
200:
201:            public static DebitAndCreditColumns createCreditColumn(
202:                    Commodity commodityForFormatting) {
203:                return new DebitAndCreditColumns(
204:                        "credit", "Credit", commodityForFormatting, false); //$NON-NLS-2$
205:            }
206:
207:            public static DebitAndCreditColumns createDebitColumn(
208:                    Commodity commodityForFormatting) {
209:                return new DebitAndCreditColumns(
210:                        "debit", "Debit", commodityForFormatting, true); //$NON-NLS-2$
211:            }
212:
213:            private DebitAndCreditColumns(String id, String name,
214:                    Commodity commodity, boolean isDebit) {
215:                super (name, 70, 2);
216:                this .id = id;
217:                this .commodity = commodity;
218:                this .isDebit = isDebit;
219:            }
220:
221:            public String getId() {
222:                return id;
223:            }
224:
225:            @Override
226:            public ICellControl<EntryData> createCellControl(Composite parent,
227:                    BaseEntryRowControl rowControl) {
228:                final Text textControl = new Text(parent, SWT.TRAIL);
229:                textControl.addTraverseListener(new TraverseListener() {
230:                    public void keyTraversed(TraverseEvent e) {
231:                        switch (e.detail) {
232:                        case SWT.TRAVERSE_ARROW_PREVIOUS:
233:                            if (e.keyCode == SWT.ARROW_UP) {
234:                                e.doit = false;
235:                                e.detail = SWT.TRAVERSE_NONE;
236:                            }
237:                            break;
238:                        case SWT.TRAVERSE_ARROW_NEXT:
239:                            if (e.keyCode == SWT.ARROW_DOWN) {
240:                                e.doit = true;
241:                            }
242:                            break;
243:                        }
244:                    }
245:                });
246:
247:                return new DebitAndCreditCellControl(textControl);
248:            }
249:
250:            public int compare(EntryData entryData1, EntryData entryData2) {
251:                long amount1 = entryData1.getEntry().getAmount();
252:                long amount2 = entryData2.getEntry().getAmount();
253:
254:                int result;
255:                if (amount1 < amount2) {
256:                    result = -1;
257:                } else if (amount1 > amount2) {
258:                    result = 1;
259:                } else {
260:                    result = 0;
261:                }
262:
263:                // If debit column then reverse.  Ascending sort should
264:                // result in the user seeing ascending numbers in the
265:                // sorted column.
266:                if (isDebit) {
267:                    result = -result;
268:                }
269:
270:                return result;
271:            }
272:        }
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