auto import from //depot/cupcake/@135843

1 files changed, 300 insertions, 0 deletions

diff --git a/awt/java/beans/PropertyDescriptor.java b/awt/java/beans/PropertyDescriptor.java
new file mode 100644
index 0000000..9389152
--- /dev/null
+++ b/awt/java/beans/PropertyDescriptor.java
@@ -0,0 +1,300 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one or more
+ *  contributor license agreements.  See the NOTICE file distributed with
+ *  this work for additional information regarding copyright ownership.
+ *  The ASF licenses this file to You under the Apache License, Version 2.0
+ *  (the "License"); you may not use this file except in compliance with
+ *  the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package java.beans;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.util.Vector;
+import org.apache.harmony.beans.internal.nls.Messages;
+
+public class PropertyDescriptor extends FeatureDescriptor {
+    private Method getter;
+
+    private Method setter;
+
+    private Class<?> propertyEditorClass;
+
+    private boolean constrained;
+
+    private boolean bound;
+
+    public PropertyDescriptor(String propertyName, Class<?> beanClass, String getterName,
+            String setterName) throws IntrospectionException {
+        super();
+        if (beanClass == null) {
+            throw new IntrospectionException(Messages.getString("beans.03")); //$NON-NLS-1$
+        }
+        if (propertyName == null || propertyName.length() == 0) {
+            throw new IntrospectionException(Messages.getString("beans.04")); //$NON-NLS-1$
+        }
+        this.setName(propertyName);
+        this.setDisplayName(propertyName);
+        if (setterName != null) {
+            if (hasMethod(beanClass, setterName)) {
+                setWriteMethod(beanClass, setterName);
+            } else {
+                throw new IntrospectionException(Messages.getString("beans.20")); //$NON-NLS-1$
+            }
+        }
+        if (getterName != null) {
+            if (hasMethod(beanClass, getterName)) {
+                setReadMethod(beanClass, getterName);
+            } else {
+                throw new IntrospectionException(Messages.getString("beans.1F")); //$NON-NLS-1$
+            }
+        }
+    }
+
+    public PropertyDescriptor(String propertyName, Method getter, Method setter)
+            throws IntrospectionException {
+        super();
+        if (propertyName == null || propertyName.length() == 0) {
+            throw new IntrospectionException(Messages.getString("beans.04")); //$NON-NLS-1$
+        }
+        this.setName(propertyName);
+        this.setDisplayName(propertyName);
+        setWriteMethod(setter);
+        setReadMethod(getter);
+    }
+
+    public PropertyDescriptor(String propertyName, Class<?> beanClass)
+            throws IntrospectionException {
+        String getterName;
+        String setterName;
+        if (beanClass == null) {
+            throw new IntrospectionException(Messages.getString("beans.03")); //$NON-NLS-1$
+        }
+        if (propertyName == null || propertyName.length() == 0) {
+            throw new IntrospectionException(Messages.getString("beans.04")); //$NON-NLS-1$
+        }
+        this.setName(propertyName);
+        this.setDisplayName(propertyName);
+        getterName = createDefaultMethodName(propertyName, "is"); //$NON-NLS-1$
+        if (hasMethod(beanClass, getterName)) {
+            setReadMethod(beanClass, getterName);
+        } else {
+            getterName = createDefaultMethodName(propertyName, "get"); //$NON-NLS-1$
+            if (hasMethod(beanClass, getterName)) {
+                setReadMethod(beanClass, getterName);
+            }
+        }
+        setterName = createDefaultMethodName(propertyName, "set"); //$NON-NLS-1$
+        if (hasMethod(beanClass, setterName)) {
+            setWriteMethod(beanClass, setterName);
+        }
+        if (getter == null && setter == null) {
+            throw new IntrospectionException(Messages.getString("beans.01", propertyName)); //$NON-NLS-1$
+        }
+    }
+
+    public void setWriteMethod(Method setter) throws IntrospectionException {
+        if (setter != null) {
+            int modifiers = setter.getModifiers();
+            if (!Modifier.isPublic(modifiers)) {
+                throw new IntrospectionException(Messages.getString("beans.05")); //$NON-NLS-1$
+            }
+            Class<?>[] parameterTypes = setter.getParameterTypes();
+            if (parameterTypes.length != 1) {
+                throw new IntrospectionException(Messages.getString("beans.06")); //$NON-NLS-1$
+            }
+            Class<?> parameterType = parameterTypes[0];
+            Class<?> propertyType = getPropertyType();
+            if (propertyType != null && !propertyType.equals(parameterType)) {
+                throw new IntrospectionException(Messages.getString("beans.07")); //$NON-NLS-1$
+            }
+        }
+        this.setter = setter;
+    }
+
+    public void setReadMethod(Method getter) throws IntrospectionException {
+        if (getter != null) {
+            int modifiers = getter.getModifiers();
+            if (!Modifier.isPublic(modifiers)) {
+                throw new IntrospectionException(Messages.getString("beans.0A")); //$NON-NLS-1$
+            }
+            Class<?>[] parameterTypes = getter.getParameterTypes();
+            if (parameterTypes.length != 0) {
+                throw new IntrospectionException(Messages.getString("beans.08")); //$NON-NLS-1$
+            }
+            Class<?> returnType = getter.getReturnType();
+            if (returnType.equals(Void.TYPE)) {
+                throw new IntrospectionException(Messages.getString("beans.33")); //$NON-NLS-1$
+            }
+            Class<?> propertyType = getPropertyType();
+            if ((propertyType != null) && !returnType.equals(propertyType)) {
+                throw new IntrospectionException(Messages.getString("beans.09")); //$NON-NLS-1$
+            }
+        }
+        this.getter = getter;
+    }
+
+    public Method getWriteMethod() {
+        return setter;
+    }
+
+    public Method getReadMethod() {
+        return getter;
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        boolean result = (object != null && object instanceof PropertyDescriptor);
+        if (result) {
+            PropertyDescriptor pd = (PropertyDescriptor) object;
+            boolean gettersAreEqual = (this.getter == null) && (pd.getReadMethod() == null)
+                    || (this.getter != null) && (this.getter.equals(pd.getReadMethod()));
+            boolean settersAreEqual = (this.setter == null) && (pd.getWriteMethod() == null)
+                    || (this.setter != null) && (this.setter.equals(pd.getWriteMethod()));
+            boolean propertyTypesAreEqual = this.getPropertyType() == pd.getPropertyType();
+            boolean propertyEditorClassesAreEqual = this.getPropertyEditorClass() == pd
+                    .getPropertyEditorClass();
+            boolean boundPropertyAreEqual = this.isBound() == pd.isBound();
+            boolean constrainedPropertyAreEqual = this.isConstrained() == pd.isConstrained();
+            result = gettersAreEqual && settersAreEqual && propertyTypesAreEqual
+                    && propertyEditorClassesAreEqual && boundPropertyAreEqual
+                    && constrainedPropertyAreEqual;
+        }
+        return result;
+    }
+
+    public void setPropertyEditorClass(Class<?> propertyEditorClass) {
+        this.propertyEditorClass = propertyEditorClass;
+    }
+
+    public Class<?> getPropertyType() {
+        Class<?> result = null;
+        if (getter != null) {
+            result = getter.getReturnType();
+        } else if (setter != null) {
+            Class<?>[] parameterTypes = setter.getParameterTypes();
+            result = parameterTypes[0];
+        }
+        return result;
+    }
+
+    public Class<?> getPropertyEditorClass() {
+        return propertyEditorClass;
+    }
+
+    public void setConstrained(boolean constrained) {
+        this.constrained = constrained;
+    }
+
+    public void setBound(boolean bound) {
+        this.bound = bound;
+    }
+
+    public boolean isConstrained() {
+        return constrained;
+    }
+
+    public boolean isBound() {
+        return bound;
+    }
+
+    boolean hasMethod(Class<?> beanClass, String methodName) {
+        Method[] methods = findMethods(beanClass, methodName);
+        return (methods.length > 0);
+    }
+
+    String createDefaultMethodName(String propertyName, String prefix) {
+        String result = null;
+        if (propertyName != null) {
+            String bos = propertyName.substring(0, 1).toUpperCase();
+            String eos = propertyName.substring(1, propertyName.length());
+            result = prefix + bos + eos;
+        }
+        return result;
+    }
+
+    Method[] findMethods(Class<?> aClass, String methodName) {
+        Method[] allMethods = aClass.getMethods();
+        Vector<Method> matchedMethods = new Vector<Method>();
+        Method[] result;
+        for (Method method : allMethods) {
+            if (method.getName().equals(methodName)) {
+                matchedMethods.add(method);
+            }
+        }
+        result = new Method[matchedMethods.size()];
+        for (int j = 0; j < matchedMethods.size(); ++j) {
+            result[j] = matchedMethods.elementAt(j);
+        }
+        return result;
+    }
+
+    void setReadMethod(Class<?> beanClass, String getterName) {
+        boolean result = false;
+        Method[] getters = findMethods(beanClass, getterName);
+        for (Method element : getters) {
+            try {
+                setReadMethod(element);
+                result = true;
+            } catch (IntrospectionException ie) {
+            }
+            if (result) {
+                break;
+            }
+        }
+    }
+
+    void setWriteMethod(Class<?> beanClass, String setterName) throws IntrospectionException {
+        boolean result = false;
+        Method[] setters = findMethods(beanClass, setterName);
+        for (Method element : setters) {
+            try {
+                setWriteMethod(element);
+                result = true;
+            } catch (IntrospectionException ie) {
+            }
+            if (result) {
+                break;
+            }
+        }
+    }
+
+    public PropertyEditor createPropertyEditor(Object bean) {
+        PropertyEditor editor;
+        if (propertyEditorClass == null) {
+            return null;
+        }
+        if (!PropertyEditor.class.isAssignableFrom(propertyEditorClass)) {
+            // beans.48=Property editor is not assignable from the
+            // PropertyEditor interface
+            throw new ClassCastException(Messages.getString("beans.48")); //$NON-NLS-1$
+        }
+        try {
+            Constructor<?> constr;
+            try {
+                // try to look for the constructor with single Object argument
+                constr = propertyEditorClass.getConstructor(Object.class);
+                editor = (PropertyEditor) constr.newInstance(bean);
+            } catch (NoSuchMethodException e) {
+                // try no-argument constructor
+                constr = propertyEditorClass.getConstructor();
+                editor = (PropertyEditor) constr.newInstance();
+            }
+        } catch (Exception e) {
+            // beans.47=Unable to instantiate property editor
+            RuntimeException re = new RuntimeException(Messages.getString("beans.47"), e); //$NON-NLS-1$
+            throw re;
+        }
+        return editor;
+    }
+}