Source Code Cross Referenced for HistoryText.java in  » Swing-Library » jEdit » org » gjt » sp » jedit » gui » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » jEdit » org.gjt.sp.jedit.gui 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * HistoryText.java - Common code for text components with a history
003:         * :tabSize=8:indentSize=8:noTabs=false:
004:         * :folding=explicit:collapseFolds=1:
005:         *
006:         * Copyright (C) 2004 Slava Pestov
007:         *
008:         * This program is free software; you can redistribute it and/or
009:         * modify it under the terms of the GNU General Public License
010:         * as published by the Free Software Foundation; either version 2
011:         * of the License, or any later version.
012:         *
013:         * This program is distributed in the hope that it will be useful,
014:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
015:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016:         * GNU General Public License for more details.
017:         *
018:         * You should have received a copy of the GNU General Public License
019:         * along with this program; if not, write to the Free Software
020:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
021:         */
022:
023:        package org.gjt.sp.jedit.gui;
024:
025:        //{{{ Imports
026:        import javax.swing.*;
027:        import javax.swing.text.*;
028:        import javax.swing.event.MouseInputAdapter;
029:        import java.awt.*;
030:        import java.awt.event.*;
031:        import org.gjt.sp.jedit.*;
032:
033:        //}}}
034:
035:        /**
036:         * Controller (manager of models) for HistoryTextArea.
037:         * @author Slava Pestov
038:         * @version $Id: HistoryText.java 8899 2007-02-05 23:33:10Z ezust $
039:         */
040:        public class HistoryText {
041:            //{{{ HistoryText constructor
042:            public HistoryText(JTextComponent text, String name) {
043:                this .text = text;
044:                setModel(name);
045:                index = -1;
046:            } //}}}
047:
048:            //{{{ fireActionPerformed() method
049:            public void fireActionPerformed() {
050:            } //}}}
051:
052:            //{{{ getIndex() mehtod
053:            public int getIndex() {
054:                return index;
055:            } //}}}
056:
057:            //{{{ setIndex() mehtod
058:            public void setIndex(int index) {
059:                this .index = index;
060:            } //}}}
061:
062:            //{{{ getModel() method
063:            /**
064:             * Returns the underlying history controller.
065:             * @since jEdit 4.3pre1
066:             */
067:            public HistoryModel getModel() {
068:                return historyModel;
069:            } //}}}
070:
071:            //{{{ setModel() method
072:            /**
073:             * Sets the history list controller.
074:             * @param name The model name
075:             * @since jEdit 4.3pre1
076:             */
077:            public void setModel(String name) {
078:                if (name == null)
079:                    historyModel = null;
080:                else
081:                    historyModel = HistoryModel.getModel(name);
082:                index = -1;
083:            } //}}}
084:
085:            //{{{ setInstantPopups() method
086:            /**
087:             * Sets if selecting a value from the popup should immediately fire
088:             * an ActionEvent.
089:             */
090:            public void setInstantPopups(boolean instantPopups) {
091:                this .instantPopups = instantPopups;
092:            } //}}}
093:
094:            //{{{ getInstantPopups() method
095:            /**
096:             * Returns if selecting a value from the popup should immediately fire
097:             * an ActionEvent.
098:             */
099:            public boolean getInstantPopups() {
100:                return instantPopups;
101:            } //}}}
102:
103:            //{{{ addCurrentToHistory() method
104:            /**
105:             * Adds the currently entered item to the history.
106:             */
107:            public void addCurrentToHistory() {
108:                if (historyModel != null)
109:                    historyModel.addItem(getText());
110:                index = 0;
111:            } //}}}
112:
113:            //{{{ doBackwardSearch() method
114:            public void doBackwardSearch() {
115:                if (historyModel == null)
116:                    return;
117:
118:                if (text.getSelectionEnd() != getDocument().getLength()) {
119:                    text.setCaretPosition(getDocument().getLength());
120:                }
121:
122:                int start = getInputStart();
123:                String t = getText().substring(0,
124:                        text.getSelectionStart() - start);
125:                if (t == null) {
126:                    historyPrevious();
127:                    return;
128:                }
129:
130:                for (int i = index + 1; i < historyModel.getSize(); i++) {
131:                    String item = historyModel.getItem(i);
132:                    if (item.startsWith(t)) {
133:                        text.replaceSelection(item.substring(t.length()));
134:                        text.select(getInputStart() + t.length(), getDocument()
135:                                .getLength());
136:                        index = i;
137:                        return;
138:                    }
139:                }
140:
141:                text.getToolkit().beep();
142:            } //}}}
143:
144:            //{{{ doForwardSearch() method
145:            public void doForwardSearch() {
146:                if (historyModel == null)
147:                    return;
148:
149:                if (text.getSelectionEnd() != getDocument().getLength()) {
150:                    text.setCaretPosition(getDocument().getLength());
151:                }
152:
153:                int start = getInputStart();
154:                String t = getText().substring(0,
155:                        text.getSelectionStart() - start);
156:                if (t == null) {
157:                    historyNext();
158:                    return;
159:                }
160:
161:                for (int i = index - 1; i >= 0; i--) {
162:                    String item = historyModel.getItem(i);
163:                    if (item.startsWith(t)) {
164:                        text.replaceSelection(item.substring(t.length()));
165:                        text.select(getInputStart() + t.length(), getDocument()
166:                                .getLength());
167:                        index = i;
168:                        return;
169:                    }
170:                }
171:
172:                text.getToolkit().beep();
173:            } //}}}
174:
175:            //{{{ historyPrevious() method
176:            public void historyPrevious() {
177:                if (historyModel == null)
178:                    return;
179:
180:                if (index == historyModel.getSize() - 1)
181:                    text.getToolkit().beep();
182:                else if (index == -1) {
183:                    current = getText();
184:                    setText(historyModel.getItem(0));
185:                    index = 0;
186:                } else {
187:                    // have to do this because setText() sets index to -1
188:                    int newIndex = index + 1;
189:                    setText(historyModel.getItem(newIndex));
190:                    index = newIndex;
191:                }
192:            } //}}}
193:
194:            //{{{ historyNext() method
195:            public void historyNext() {
196:                if (historyModel == null)
197:                    return;
198:
199:                if (index == -1)
200:                    text.getToolkit().beep();
201:                else if (index == 0)
202:                    setText(current);
203:                else {
204:                    // have to do this because setText() sets index to -1
205:                    int newIndex = index - 1;
206:                    setText(historyModel.getItem(newIndex));
207:                    index = newIndex;
208:                }
209:            } //}}}
210:
211:            //{{{ getDocument() method
212:            public Document getDocument() {
213:                return text.getDocument();
214:            } //}}}
215:
216:            //{{{ getText() method
217:            /**
218:             * Subclasses can override this to provide funky history behavior,
219:             * for JTextPanes and such.
220:             */
221:            public String getText() {
222:                return text.getText();
223:            } //}}}
224:
225:            //{{{ setText() method
226:            /**
227:             * Subclasses can override this to provide funky history behavior,
228:             * for JTextPanes and such.
229:             */
230:            public void setText(String text) {
231:                this .index = -1;
232:                this .text.setText(text);
233:            } //}}}
234:
235:            //{{{ getInputStart() method
236:            /**
237:             * Subclasses can override this to provide funky history behavior,
238:             * for JTextPanes and such.
239:             */
240:            public int getInputStart() {
241:                return 0;
242:            } //}}}
243:
244:            //{{{ showPopupMenu() method
245:            public void showPopupMenu(String t, int x, int y) {
246:                if (historyModel == null)
247:                    return;
248:
249:                text.requestFocus();
250:
251:                if (popup != null && popup.isVisible()) {
252:                    popup.setVisible(false);
253:                    return;
254:                }
255:
256:                popup = new JPopupMenu();
257:                JMenuItem caption = new JMenuItem(jEdit
258:                        .getProperty("history.caption"));
259:                caption.getModel().setEnabled(false);
260:                popup.add(caption);
261:                popup.addSeparator();
262:
263:                for (int i = 0; i < historyModel.getSize(); i++) {
264:                    String item = historyModel.getItem(i);
265:                    if (item.startsWith(t)) {
266:                        JMenuItem menuItem = new JMenuItem(item);
267:                        menuItem.setActionCommand(String.valueOf(i));
268:                        menuItem.addActionListener(new ActionHandler());
269:                        popup.add(menuItem);
270:                    }
271:                }
272:
273:                GUIUtilities.showPopupMenu(popup, text, x, y, false);
274:            } //}}}
275:
276:            //{{{ showPopupMenu() method
277:            public void showPopupMenu(boolean search) {
278:                if (search)
279:                    showPopupMenu(getText().substring(getInputStart(),
280:                            text.getSelectionStart()), 0, text.getHeight());
281:                else
282:                    showPopupMenu("", 0, text.getHeight());
283:            } //}}}
284:
285:            //{{{ Private members
286:            private JTextComponent text;
287:            private HistoryModel historyModel;
288:            private int index;
289:            private String current;
290:            private JPopupMenu popup;
291:            private boolean instantPopups;
292:
293:            //}}}
294:
295:            //{{{ ActionHandler class
296:            class ActionHandler implements  ActionListener {
297:                public void actionPerformed(ActionEvent evt) {
298:                    int ind = Integer.parseInt(evt.getActionCommand());
299:                    if (ind == -1) {
300:                        if (index != -1)
301:                            setText(current);
302:                    } else {
303:                        setText(historyModel.getItem(ind));
304:                        index = ind;
305:                    }
306:                    if (instantPopups) {
307:                        addCurrentToHistory();
308:                        fireActionPerformed();
309:                    }
310:                }
311:            } //}}}
312:        }
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