| /* |
| * Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.jconsole.inspector; |
| |
| import java.awt.event.*; |
| import java.lang.reflect.*; |
| import java.math.BigDecimal; |
| import java.math.BigInteger; |
| import java.util.*; |
| import java.util.concurrent.ExecutionException; |
| import javax.management.*; |
| import javax.management.openmbean.*; |
| import javax.swing.*; |
| import javax.swing.text.*; |
| |
| public class Utils { |
| |
| private Utils() { |
| } |
| private static Set<Integer> tableNavigationKeys = |
| new HashSet<Integer>(Arrays.asList(new Integer[]{ |
| KeyEvent.VK_TAB, KeyEvent.VK_ENTER, |
| KeyEvent.VK_HOME, KeyEvent.VK_END, |
| KeyEvent.VK_LEFT, KeyEvent.VK_RIGHT, |
| KeyEvent.VK_UP, KeyEvent.VK_DOWN, |
| KeyEvent.VK_PAGE_UP, KeyEvent.VK_PAGE_DOWN |
| })); |
| private static final Set<Class<?>> primitiveWrappers = |
| new HashSet<Class<?>>(Arrays.asList(new Class<?>[]{ |
| Byte.class, Short.class, Integer.class, Long.class, |
| Float.class, Double.class, Character.class, Boolean.class |
| })); |
| private static final Set<Class<?>> primitives = new HashSet<Class<?>>(); |
| private static final Map<String, Class<?>> primitiveMap = |
| new HashMap<String, Class<?>>(); |
| private static final Map<String, Class<?>> primitiveToWrapper = |
| new HashMap<String, Class<?>>(); |
| private static final Set<String> editableTypes = new HashSet<String>(); |
| private static final Set<Class<?>> extraEditableClasses = |
| new HashSet<Class<?>>(Arrays.asList(new Class<?>[]{ |
| BigDecimal.class, BigInteger.class, Number.class, |
| String.class, ObjectName.class |
| })); |
| private static final Set<String> numericalTypes = new HashSet<String>(); |
| private static final Set<String> extraNumericalTypes = |
| new HashSet<String>(Arrays.asList(new String[]{ |
| BigDecimal.class.getName(), BigInteger.class.getName(), |
| Number.class.getName() |
| })); |
| private static final Set<String> booleanTypes = |
| new HashSet<String>(Arrays.asList(new String[]{ |
| Boolean.TYPE.getName(), Boolean.class.getName() |
| })); |
| |
| static { |
| // compute primitives/primitiveMap/primitiveToWrapper |
| for (Class<?> c : primitiveWrappers) { |
| try { |
| Field f = c.getField("TYPE"); |
| Class<?> p = (Class<?>) f.get(null); |
| primitives.add(p); |
| primitiveMap.put(p.getName(), p); |
| primitiveToWrapper.put(p.getName(), c); |
| } catch (Exception e) { |
| throw new AssertionError(e); |
| } |
| } |
| // compute editableTypes |
| for (Class<?> c : primitives) { |
| editableTypes.add(c.getName()); |
| } |
| for (Class<?> c : primitiveWrappers) { |
| editableTypes.add(c.getName()); |
| } |
| for (Class<?> c : extraEditableClasses) { |
| editableTypes.add(c.getName()); |
| } |
| // compute numericalTypes |
| for (Class<?> c : primitives) { |
| String name = c.getName(); |
| if (!name.equals(Boolean.TYPE.getName())) { |
| numericalTypes.add(name); |
| } |
| } |
| for (Class<?> c : primitiveWrappers) { |
| String name = c.getName(); |
| if (!name.equals(Boolean.class.getName())) { |
| numericalTypes.add(name); |
| } |
| } |
| } |
| |
| /** |
| * This method returns the class matching the name className. |
| * It's used to cater for the primitive types. |
| */ |
| public static Class<?> getClass(String className) |
| throws ClassNotFoundException { |
| Class<?> c; |
| if ((c = primitiveMap.get(className)) != null) { |
| return c; |
| } |
| return Class.forName(className); |
| } |
| |
| /** |
| * Check if the given collection is a uniform collection of the given type. |
| */ |
| public static boolean isUniformCollection(Collection<?> c, Class<?> e) { |
| if (e == null) { |
| throw new IllegalArgumentException("Null reference type"); |
| } |
| if (c == null) { |
| throw new IllegalArgumentException("Null collection"); |
| } |
| if (c.isEmpty()) { |
| return false; |
| } |
| for (Object o : c) { |
| if (o == null || !e.isAssignableFrom(o.getClass())) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Check if the given element denotes a supported array-friendly data |
| * structure, i.e. a data structure jconsole can render as an array. |
| */ |
| public static boolean canBeRenderedAsArray(Object elem) { |
| if (isSupportedArray(elem)) { |
| return true; |
| } |
| if (elem instanceof Collection) { |
| Collection<?> c = (Collection<?>) elem; |
| if (c.isEmpty()) { |
| // Empty collections of any Java type are not handled as arrays |
| // |
| return false; |
| } else { |
| // - Collections of CompositeData/TabularData are not handled |
| // as arrays |
| // - Collections of other Java types are handled as arrays |
| // |
| return !isUniformCollection(c, CompositeData.class) && |
| !isUniformCollection(c, TabularData.class); |
| } |
| } |
| if (elem instanceof Map) { |
| return !(elem instanceof TabularData); |
| } |
| return false; |
| } |
| |
| /** |
| * Check if the given element is an array. |
| * |
| * Multidimensional arrays are not supported. |
| * |
| * Non-empty 1-dimensional arrays of CompositeData |
| * and TabularData are not handled as arrays but as |
| * tabular data. |
| */ |
| public static boolean isSupportedArray(Object elem) { |
| if (elem == null || !elem.getClass().isArray()) { |
| return false; |
| } |
| Class<?> ct = elem.getClass().getComponentType(); |
| if (ct.isArray()) { |
| return false; |
| } |
| if (Array.getLength(elem) > 0 && |
| (CompositeData.class.isAssignableFrom(ct) || |
| TabularData.class.isAssignableFrom(ct))) { |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * This method provides a readable classname if it's an array, |
| * i.e. either the classname of the component type for arrays |
| * of java reference types or the name of the primitive type |
| * for arrays of java primitive types. Otherwise, it returns null. |
| */ |
| public static String getArrayClassName(String name) { |
| String className = null; |
| if (name.startsWith("[")) { |
| int index = name.lastIndexOf('['); |
| className = name.substring(index, name.length()); |
| if (className.startsWith("[L")) { |
| className = className.substring(2, className.length() - 1); |
| } else { |
| try { |
| Class<?> c = Class.forName(className); |
| className = c.getComponentType().getName(); |
| } catch (ClassNotFoundException e) { |
| // Should not happen |
| throw new IllegalArgumentException( |
| "Bad class name " + name, e); |
| } |
| } |
| } |
| return className; |
| } |
| |
| /** |
| * This methods provides a readable classname. If the supplied name |
| * parameter denotes an array this method returns either the classname |
| * of the component type for arrays of java reference types or the name |
| * of the primitive type for arrays of java primitive types followed by |
| * n-times "[]" where 'n' denotes the arity of the array. Otherwise, if |
| * the supplied name doesn't denote an array it returns the same classname. |
| */ |
| public static String getReadableClassName(String name) { |
| String className = getArrayClassName(name); |
| if (className == null) { |
| return name; |
| } |
| int index = name.lastIndexOf('['); |
| StringBuilder brackets = new StringBuilder(className); |
| for (int i = 0; i <= index; i++) { |
| brackets.append("[]"); |
| } |
| return brackets.toString(); |
| } |
| |
| /** |
| * This method tells whether the type is editable |
| * (means can be created with a String or not) |
| */ |
| public static boolean isEditableType(String type) { |
| return editableTypes.contains(type); |
| } |
| |
| /** |
| * This method inserts a default value for the standard java types, |
| * else it inserts the text name of the expected class type. |
| * It acts to give a clue as to the input type. |
| */ |
| public static String getDefaultValue(String type) { |
| if (numericalTypes.contains(type) || |
| extraNumericalTypes.contains(type)) { |
| return "0"; |
| } |
| if (booleanTypes.contains(type)) { |
| return "true"; |
| } |
| type = getReadableClassName(type); |
| int i = type.lastIndexOf('.'); |
| if (i > 0) { |
| return type.substring(i + 1, type.length()); |
| } else { |
| return type; |
| } |
| } |
| |
| /** |
| * Try to create a Java object using a one-string-param constructor. |
| */ |
| public static Object newStringConstructor(String type, String param) |
| throws Exception { |
| Constructor<?> c = Utils.getClass(type).getConstructor(String.class); |
| try { |
| return c.newInstance(param); |
| } catch (InvocationTargetException e) { |
| Throwable t = e.getTargetException(); |
| if (t instanceof Exception) { |
| throw (Exception) t; |
| } else { |
| throw e; |
| } |
| } |
| } |
| |
| /** |
| * Try to convert a string value into a numerical value. |
| */ |
| private static Number createNumberFromStringValue(String value) |
| throws NumberFormatException { |
| final String suffix = value.substring(value.length() - 1); |
| if ("L".equalsIgnoreCase(suffix)) { |
| return Long.valueOf(value.substring(0, value.length() - 1)); |
| } |
| if ("F".equalsIgnoreCase(suffix)) { |
| return Float.valueOf(value.substring(0, value.length() - 1)); |
| } |
| if ("D".equalsIgnoreCase(suffix)) { |
| return Double.valueOf(value.substring(0, value.length() - 1)); |
| } |
| try { |
| return Integer.valueOf(value); |
| } catch (NumberFormatException e) { |
| // OK: Ignore exception... |
| } |
| try { |
| return Long.valueOf(value); |
| } catch (NumberFormatException e1) { |
| // OK: Ignore exception... |
| } |
| try { |
| return Double.valueOf(value); |
| } catch (NumberFormatException e2) { |
| // OK: Ignore exception... |
| } |
| throw new NumberFormatException("Cannot convert string value '" + |
| value + "' into a numerical value"); |
| } |
| |
| /** |
| * This method attempts to create an object of the given "type" |
| * using the "value" parameter. |
| * e.g. calling createObjectFromString("java.lang.Integer", "10") |
| * will return an Integer object initialized to 10. |
| */ |
| public static Object createObjectFromString(String type, String value) |
| throws Exception { |
| Object result; |
| if (primitiveToWrapper.containsKey(type)) { |
| if (type.equals(Character.TYPE.getName())) { |
| result = value.charAt(0); |
| } else { |
| result = newStringConstructor( |
| ((Class<?>) primitiveToWrapper.get(type)).getName(), |
| value); |
| } |
| } else if (type.equals(Character.class.getName())) { |
| result = value.charAt(0); |
| } else if (Number.class.isAssignableFrom(Utils.getClass(type))) { |
| result = createNumberFromStringValue(value); |
| } else if (value == null || value.equals("null")) { |
| // hack for null value |
| result = null; |
| } else { |
| // try to create a Java object using |
| // the one-string-param constructor |
| result = newStringConstructor(type, value); |
| } |
| return result; |
| } |
| |
| /** |
| * This method is responsible for converting the inputs given by the user |
| * into a useful object array for passing into a parameter array. |
| */ |
| public static Object[] getParameters(XTextField[] inputs, String[] params) |
| throws Exception { |
| Object result[] = new Object[inputs.length]; |
| Object userInput; |
| for (int i = 0; i < inputs.length; i++) { |
| userInput = inputs[i].getValue(); |
| // if it's already a complex object, use the value |
| // else try to instantiate with string constructor |
| if (userInput instanceof XObject) { |
| result[i] = ((XObject) userInput).getObject(); |
| } else { |
| result[i] = createObjectFromString(params[i].toString(), |
| (String) userInput); |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * If the exception is wrapped, unwrap it. |
| */ |
| public static Throwable getActualException(Throwable e) { |
| if (e instanceof ExecutionException) { |
| e = e.getCause(); |
| } |
| if (e instanceof MBeanException || |
| e instanceof RuntimeMBeanException || |
| e instanceof RuntimeOperationsException || |
| e instanceof ReflectionException) { |
| Throwable t = e.getCause(); |
| if (t != null) { |
| return t; |
| } |
| } |
| return e; |
| } |
| |
| @SuppressWarnings("serial") |
| public static class ReadOnlyTableCellEditor |
| extends DefaultCellEditor { |
| |
| public ReadOnlyTableCellEditor(JTextField tf) { |
| super(tf); |
| tf.addFocusListener(new Utils.EditFocusAdapter(this)); |
| tf.addKeyListener(new Utils.CopyKeyAdapter()); |
| } |
| } |
| |
| public static class EditFocusAdapter extends FocusAdapter { |
| |
| private CellEditor editor; |
| |
| public EditFocusAdapter(CellEditor editor) { |
| this.editor = editor; |
| } |
| |
| @Override |
| public void focusLost(FocusEvent e) { |
| editor.stopCellEditing(); |
| } |
| } |
| |
| public static class CopyKeyAdapter extends KeyAdapter { |
| private static final String defaultEditorKitCopyActionName = |
| DefaultEditorKit.copyAction; |
| private static final String transferHandlerCopyActionName = |
| (String) TransferHandler.getCopyAction().getValue(Action.NAME); |
| @Override |
| public void keyPressed(KeyEvent e) { |
| // Accept "copy" key strokes |
| KeyStroke ks = KeyStroke.getKeyStroke( |
| e.getKeyCode(), e.getModifiersEx()); |
| JComponent comp = (JComponent) e.getSource(); |
| for (int i = 0; i < 3; i++) { |
| InputMap im = comp.getInputMap(i); |
| Object key = im.get(ks); |
| if (defaultEditorKitCopyActionName.equals(key) || |
| transferHandlerCopyActionName.equals(key)) { |
| return; |
| } |
| } |
| // Accept JTable navigation key strokes |
| if (!tableNavigationKeys.contains(e.getKeyCode())) { |
| e.consume(); |
| } |
| } |
| |
| @Override |
| public void keyTyped(KeyEvent e) { |
| e.consume(); |
| } |
| } |
| } |