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1: /* JButton.java -- 2: Copyright (C) 2002, 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: package javax.swing; 39: 40: import javax.accessibility.Accessible; 41: import javax.accessibility.AccessibleContext; 42: import javax.swing.plaf.ButtonUI; 43: 44: 45: /** 46: * An instance of JButton can be added to a panel, frame etc 47: * 48: * @author Ronald Veldema (rveldema@cs.vu.nl) 49: */ 50: public class JButton extends AbstractButton 51: implements Accessible 52: { 53: private static final long serialVersionUID = -1907255238954382202L; 54: boolean def; 55: boolean is_def; 56: 57: public JButton() 58: { 59: this(null, null); 60: } 61: 62: public JButton(Action a) 63: { 64: this(); 65: setAction(a); 66: } 67: 68: public JButton(Icon icon) 69: { 70: this(null, icon); 71: } 72: 73: public JButton(String text) 74: { 75: this(text, null); 76: } 77: 78: public JButton(String text, Icon icon) 79: { 80: super(); 81: init(text, icon); 82: setModel(new DefaultButtonModel()); 83: } 84: 85: public Object[] getSelectedObjects() 86: { 87: return null; 88: } 89: 90: protected void configurePropertiesFromAction(Action a) 91: { 92: // Factory method which sets the AbstractButton's properties according to 93: // values from the Action instance. 94: super.configurePropertiesFromAction(a); 95: } 96: 97: public AccessibleContext getAccessibleContext() 98: { 99: // Gets the AccessibleContext associated with this JButton. 100: return null; 101: } 102: 103: public String getUIClassID() 104: { 105: // Returns a string that specifies the name of the L&F class that renders 106: // this component. 107: return "ButtonUI"; 108: } 109: 110: public boolean isDefaultButton() 111: { 112: // Returns whether or not this button is the default button on the 113: // RootPane. 114: return is_def; 115: } 116: 117: public boolean isDefaultCapable() 118: { 119: // Returns whether or not this button is capable of being the default 120: // button on the RootPane. 121: return def; 122: } 123: 124: protected String paramString() 125: { 126: String superParam = super.paramString(); 127: 128: // 41 is the maximum number of chars which may be needed. 129: StringBuffer sb = new StringBuffer(41); 130: sb.append(",defaultButton=").append(is_def); 131: sb.append(",defaultCapable=").append(def); 132: 133: return superParam + sb.toString(); 134: } 135: 136: /** 137: * Overrides JComponent.removeNotify to check if this button is currently 138: * set as the default button on the RootPane, and if so, sets the RootPane's 139: * default button to null to ensure the RootPane doesn't hold onto an invalid 140: * button reference. 141: */ 142: public void removeNotify() 143: { 144: } 145: 146: public void setDefaultCapable(boolean defaultCapable) 147: { 148: def = defaultCapable; 149: } 150: 151: public void updateUI() 152: { 153: setUI((ButtonUI) UIManager.getUI(this)); 154: } 155: }
GNU Classpath (0.17) |