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1: /* BasicComboBoxEditor.java -- 2: Copyright (C) 2004, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package javax.swing.plaf.basic; 40: 41: import java.awt.Component; 42: import java.awt.event.ActionListener; 43: import java.awt.event.FocusEvent; 44: import java.awt.event.FocusListener; 45: 46: import javax.swing.ComboBoxEditor; 47: import javax.swing.JTextField; 48: import javax.swing.border.EmptyBorder; 49: 50: /** 51: * This is a component that is responsible for displaying/editting selected 52: * item in comboBox. By default, the JTextField is returned as 53: * BasicComboBoxEditor. 54: * 55: * @author Olga Rodimina 56: */ 57: public class BasicComboBoxEditor extends Object implements ComboBoxEditor, 58: FocusListener 59: { 60: protected JTextField editor; 61: 62: /** 63: * Creates a new BasicComboBoxEditor object. 64: */ 65: public BasicComboBoxEditor() 66: { 67: editor = new JTextField(); 68: editor.setBorder(new EmptyBorder(1, 1, 1, 1)); 69: } 70: 71: /** 72: * This method returns textfield that will be used by the combo box to 73: * display/edit currently selected item in the combo box. 74: * 75: * @return textfield that will be used by the combo box to display/edit 76: * currently selected item 77: */ 78: public Component getEditorComponent() 79: { 80: return editor; 81: } 82: 83: /** 84: * Sets item that should be edited when any editing operation is performed 85: * by the user. The value is always equal to the currently selected value 86: * in the combo box. Thus whenever a different value is selected from the 87: * combo box list then this method should be called to change editing 88: * item to the new selected item. 89: * 90: * @param item item that is currently selected in the combo box 91: */ 92: public void setItem(Object item) 93: { 94: if (item == null) 95: editor.setText(""); 96: else 97: editor.setText(item.toString()); 98: } 99: 100: /** 101: * This method returns item that is currently editable. 102: * 103: * @return item in the combo box that is currently editable 104: */ 105: public Object getItem() 106: { 107: return editor.getText(); 108: } 109: 110: public void selectAll() 111: { 112: editor.selectAll(); 113: } 114: 115: /** 116: * This method is called when textfield gains focus. This will enable 117: * editing of the selected item. 118: * 119: * @param e the FocusEvent describing change in focus. 120: */ 121: public void focusGained(FocusEvent e) 122: { 123: // FIXME: Need to implement 124: } 125: 126: /** 127: * This method is called when textfield loses focus. If during this time any 128: * editting operation was performed by the user, then it will be cancelled 129: * and selected item will not be changed. 130: * 131: * @param e the FocusEvent describing change in focus 132: */ 133: public void focusLost(FocusEvent e) 134: { 135: // FIXME: Need to implement 136: } 137: 138: /** 139: * This method adds actionListener to the editor. If the user will edit 140: * currently selected item in the textfield and pressEnter, then action 141: * will be performed. The actionPerformed of this ActionListener should 142: * change the selected item of the comboBox to the newly editted selected 143: * item. 144: * 145: * @param l the ActionListener responsible for changing selected item of the 146: * combo box when it is editted by the user. 147: */ 148: public void addActionListener(ActionListener l) 149: { 150: // FIXME: Need to implement 151: } 152: 153: /** 154: * This method removes actionListener from the textfield. 155: * 156: * @param l the ActionListener to remove from the textfield. 157: */ 158: public void removeActionListener(ActionListener l) 159: { 160: // FIXME: Need to implement 161: } 162: 163: public static class UIResource extends BasicComboBoxEditor 164: implements javax.swing.plaf.UIResource 165: { 166: /** 167: * Creates a new UIResource object. 168: */ 169: public UIResource() 170: { 171: // Nothing to do here. 172: } 173: } 174: }
GNU Classpath (0.19) |