| /* java.beans.PropertyEditorManager |
| Copyright (C) 1998 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.beans; |
| |
| import gnu.java.beans.editors.ColorEditor; |
| import gnu.java.beans.editors.FontEditor; |
| import gnu.java.beans.editors.NativeBooleanEditor; |
| import gnu.java.beans.editors.NativeByteEditor; |
| import gnu.java.beans.editors.NativeDoubleEditor; |
| import gnu.java.beans.editors.NativeFloatEditor; |
| import gnu.java.beans.editors.NativeIntEditor; |
| import gnu.java.beans.editors.NativeLongEditor; |
| import gnu.java.beans.editors.NativeShortEditor; |
| import gnu.java.beans.editors.StringEditor; |
| import gnu.java.lang.ClassHelper; |
| |
| import java.awt.Color; |
| import java.awt.Font; |
| |
| /** |
| * PropertyEditorManager is used to find property editors |
| * for various types (not necessarily Beans).<P> |
| * |
| * It first checks to see if the property editor is |
| * already registered; if it is, that property editor is |
| * used. Next it takes the type's classname and appends |
| * "Editor" to it, and searches first in the class's |
| * package and then in the property editor search path. |
| * |
| * <p>Default property editors are provided for:</p> |
| * |
| * <ol> |
| * <li>boolean, byte, short, int, long, float, and double</li> |
| * <li>java.lang.String</li> |
| * <li>java.awt.Color</li> |
| * <li>java.awt.Font</li> |
| * </ol> |
| * |
| * <p><strong>Spec Suggestion:</strong> Perhaps an editor for |
| * Filename or something like it should be provided. As well |
| * as char.</p> |
| * |
| * @author John Keiser |
| * @since 1.1 |
| * @version 1.1.0, 29 Jul 1998 |
| */ |
| |
| public class PropertyEditorManager |
| { |
| static java.util.Hashtable editors = new java.util.Hashtable(); |
| static String[] editorSearchPath = { "gnu.java.beans.editors", |
| "sun.beans.editors" }; |
| |
| static |
| { |
| registerEditor(Boolean.TYPE, NativeBooleanEditor.class); |
| registerEditor(Byte.TYPE, NativeByteEditor.class); |
| registerEditor(Short.TYPE, NativeShortEditor.class); |
| registerEditor(Integer.TYPE, NativeIntEditor.class); |
| registerEditor(Long.TYPE, NativeLongEditor.class); |
| registerEditor(Float.TYPE, NativeFloatEditor.class); |
| registerEditor(Double.TYPE, NativeDoubleEditor.class); |
| registerEditor(String.class, StringEditor.class); |
| registerEditor(Color.class, ColorEditor.class); |
| registerEditor(Font.class, FontEditor.class); |
| } |
| |
| /** |
| * Beats me why this class can be instantiated, but there |
| * you have it. |
| */ |
| public PropertyEditorManager() |
| { |
| // Do nothing here |
| } |
| |
| /** |
| * Register an editor for a class. Replaces old editor |
| * if there was one registered before. |
| * |
| * @param editedClass the class that the property editor |
| * will edit. |
| * @param editorClass the PropertyEditor class. |
| */ |
| public static void registerEditor(Class editedClass, Class editorClass) |
| { |
| editors.put(editedClass, editorClass); |
| } |
| |
| /** |
| * Returns a new instance of the property editor for the |
| * specified class. |
| * |
| * @param editedClass the class that the property editor |
| * will edit. |
| * @return a PropertyEditor instance that can edit the |
| * specified class. |
| */ |
| public static PropertyEditor findEditor(Class editedClass) |
| { |
| try |
| { |
| Class found = (Class)editors.get(editedClass); |
| if(found != null) |
| { |
| return (PropertyEditor)found.newInstance(); |
| } |
| |
| ClassLoader contextClassLoader |
| = Thread.currentThread().getContextClassLoader(); |
| |
| try |
| { |
| found = Class.forName(editedClass.getName()+"Editor", true, |
| contextClassLoader); |
| registerEditor(editedClass,found); |
| return (PropertyEditor)found.newInstance(); |
| } |
| catch(ClassNotFoundException E) |
| { |
| } |
| |
| String appendName |
| = "." |
| + ClassHelper.getTruncatedClassName(editedClass) |
| + "Editor"; |
| synchronized(editorSearchPath) |
| { |
| for(int i=0;i<editorSearchPath.length;i++) |
| { |
| try |
| { |
| found = Class.forName(editorSearchPath[i] + appendName, |
| true, contextClassLoader); |
| registerEditor(editedClass,found); |
| return (PropertyEditor)found.newInstance(); |
| } |
| catch(ClassNotFoundException E) |
| { |
| } |
| } |
| } |
| } |
| catch(InstantiationException E) |
| { |
| } |
| catch(IllegalAccessException E) |
| { |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Get the editor search path. |
| * As a minor departure from the spec, the default value |
| * for the editor search path is "gnu.java.beans.editors", |
| * "sun.beans.editors". |
| * |
| * @return the editor search path. |
| */ |
| public static String[] getEditorSearchPath() |
| { |
| return editorSearchPath; |
| } |
| |
| /** |
| * Set the editor search path. |
| * |
| * @param editorSearchPath the new value for the editor search path. |
| */ |
| public static void setEditorSearchPath(String[] editorSearchPath) |
| { |
| synchronized(editorSearchPath) |
| { |
| PropertyEditorManager.editorSearchPath = editorSearchPath; |
| } |
| } |
| } |