Java JComponent Properties getProperties(JComponent component)

Description

Convenience method for obtaining most non-null human readable properties of a JComponent.

License

Apache License

Parameter

Parameter	Description
component	the component whose proerties are to be determined

Return

the class and value of the properties

Declaration

public static Map<Object, Object> getProperties(JComponent component) 

Method Source Code

//package com.java2s;
/* //from   w w  w . ja v a 2s. co m
 * Copyright 2016 Dmitry Avtonomov.
 *
 * Licensed 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.
 */

import java.awt.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import java.util.HashMap;
import java.util.HashSet;

import java.util.Map;
import java.util.Set;
import javax.swing.JComponent;

public class Main {
    /**
     * Exclude methods that return values that are meaningless to the user
     */
    static Set<String> setExclude = new HashSet<String>();

    /**
     * Convenience method for obtaining most non-null human readable properties
     * of a JComponent.  Array properties are not included.
     * <P>
     * Implementation note:  The returned value is a HashMap.  This is subject
     * to change, so callers should code against the interface Map.
     * 
     * @param component the component whose proerties are to be determined
     * @return the class and value of the properties
     */
    public static Map<Object, Object> getProperties(JComponent component) {
        Map<Object, Object> retVal = new HashMap<>();
        Class<?> clazz = component.getClass();
        Method[] methods = clazz.getMethods();
        Object value = null;
        for (Method method : methods) {
            if (method.getName().matches("^(is|get).*") && method.getParameterTypes().length == 0) {
                try {
                    Class<?> returnType = method.getReturnType();
                    if (returnType != void.class && !returnType.getName().startsWith("[")
                            && !setExclude.contains(method.getName())) {
                        String key = method.getName();
                        value = method.invoke(component);
                        if (value != null && !(value instanceof Component)) {
                            retVal.put(key, value);
                        }
                    }
                    // ignore exceptions that arise if the property could not be accessed
                } catch (IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
                }
            }
        }
        return retVal;
    }
}

Related

1. buildComponentPanelRight(JComponent component, int hgap, int vgap, boolean isOpaque)
2. disableAll(JComponent component)
3. disposeParentWindow(JComponent component)
4. doDisable(JComponent component)
5. getProperties(JComponent component)
6. getProperties(JComponent component)
7. getVisibleBoundsOnScreen(JComponent component)
8. invert(JComponent c)
9. isActive(JComponent c)