com.swtxml.events.registry.WidgetEventListenerMethod.java Source code

Introduction

Here is the source code for com.swtxml.events.registry.WidgetEventListenerMethod.java

Source

/*******************************************************************************
 * Copyright (c) 2008 Ralf Ebert
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Ralf Ebert - initial API and implementation
 *******************************************************************************/
package com.swtxml.events.registry;

import java.lang.reflect.Method;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.custom.ExtendedModifyListener;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.widgets.Widget;

import com.swtxml.util.reflector.ReflectorException;

public class WidgetEventListenerMethod {

    private final Method listenerAddMethod;
    private final Method listenerMethod;

    public WidgetEventListenerMethod(Method listenerAddMethod, Method listenerMethod) {
        super();
        this.listenerAddMethod = listenerAddMethod;
        this.listenerMethod = listenerMethod;
    }

    public Class<?> getListenerInterfaceClass() {
        return listenerAddMethod.getParameterTypes()[0];
    }

    public Class<?> getEventClass() {
        return listenerMethod.getParameterTypes()[0];
    }

    public void addListenerToWidget(Widget widget, Object listener) {
        try {
            listenerAddMethod.invoke(widget, listener);
        } catch (Exception e) {
            new ReflectorException(e);
        }
    }

    @Override
    public int hashCode() {
        return new HashCodeBuilder().append(getListenerInterfaceClass()).append(getEventClass()).toHashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return EqualsBuilder.reflectionEquals(this, obj);
    }

    @Override
    public String toString() {
        return String.format("%s[%s, %s]", getClass().getSimpleName(), listenerAddMethod.getName(),
                listenerMethod.getName());
    }

    public String getName() {
        if (StyledText.class == listenerAddMethod.getDeclaringClass()
                && ExtendedModifyListener.class == getListenerInterfaceClass()) {
            return "extendedModifyText";
        }
        if (Browser.class == listenerAddMethod.getDeclaringClass()) {
            return StringUtils
                    .uncapitalize(StringUtils.replace(getListenerInterfaceClass().getSimpleName(), "Listener", ""))
                    + StringUtils.capitalize(listenerMethod.getName());
        }
        return listenerMethod.getName();
    }
}