org.apache.wicket.feedback.FeedbackMessage Maven / Gradle / Ivy

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Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools. Dynamic content processing and form handling is all handled in Java code using a first-class component model backed by POJO data beans that can easily be persisted using your favorite technology.
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/*
 * 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 org.apache.wicket.feedback;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

import org.apache.wicket.Component;
import org.apache.wicket.model.IDetachable;


/**
 * Represents a generic message meant for the end-user/ pages.
 * 
 * @author Eelco Hillenius
 * @author Jonathan Locke
 */
public class FeedbackMessage implements IDetachable
{
	private static final long serialVersionUID = 1L;

	/**
	 * Constant for an undefined level; note that components might decide not to render anything
	 * when this level is used.
	 */
	public static final int UNDEFINED = 0;

	/** Constant for debug level. */
	public static final int DEBUG = 100;

	/** Constant for info level. */
	public static final int INFO = 200;

	/** Constant for success level (it indicates the outcome of an operation) */
	public static final int SUCCESS = 250;

	/** Constant for warning level. */
	public static final int WARNING = 300;

	/** Constant for error level. */
	public static final int ERROR = 400;

	/** Constant for fatal level. */
	public static final int FATAL = 500;

	/** Levels as strings for debugging. */
	private static final Map levelStrings = new HashMap();

	static
	{
		levelStrings.put(UNDEFINED, "UNDEFINED");
		levelStrings.put(DEBUG, "DEBUG");
		levelStrings.put(INFO, "INFO");
		levelStrings.put(SUCCESS, "SUCCESS");
		levelStrings.put(WARNING, "WARNING");
		levelStrings.put(ERROR, "ERROR");
		levelStrings.put(FATAL, "FATAL");
	}

	/**
	 * The message level; can be used by rendering components. Note that what actually happens with
	 * the level indication is totally up to the components that render messages like these. The
	 * default level is UNDEFINED.
	 */
	private final int level;

	/** The actual message. */
	private final Serializable message;

	/** The reporting component. */
	private Component reporter;

	/** Whether or not this message has been rendered */
	private boolean rendered = false;

	/**
	 * Construct using fields.
	 * 
	 * @param reporter
	 *            The message reporter
	 * @param message
	 *            The actual message. Must not be null.
	 * @param level
	 *            The level of the message
	 */
	public FeedbackMessage(final Component reporter, final Serializable message, final int level)
	{
		if (message == null)
		{
			throw new IllegalArgumentException("Parameter message can't be null");
		}
		this.reporter = reporter;
		this.message = message;
		this.level = level;
	}

	/**
	 * Gets whether or not this message has been rendered
	 * 
	 * @return true if this message has been rendered, false otherwise
	 */
	public final boolean isRendered()
	{
		return rendered;
	}


	/**
	 * Marks this message as rendered.
	 */
	public final void markRendered()
	{
		rendered = true;
	}


	/**
	 * Gets the message level; can be used by rendering components. Note that what actually happens
	 * with the level indication is totally up to the components that render feedback messages.
	 * 
	 * @return The message level indicator.
	 */
	public final int getLevel()
	{
		return level;
	}

	/**
	 * Gets the current level as a String
	 * 
	 * @return The current level as a String
	 */
	public String getLevelAsString()
	{
		return levelStrings.get(getLevel());
	}

	/**
	 * Gets the actual message.
	 * 
	 * @return the message.
	 */
	public final Serializable getMessage()
	{
		return message;
	}

	/**
	 * Gets the reporting component.
	 * 
	 * @return the reporting component.
	 */
	public final Component getReporter()
	{
		return reporter;
	}

	/**
	 * Gets whether the current level is DEBUG or up.
	 * 
	 * @return whether the current level is DEBUG or up.
	 */
	public final boolean isDebug()
	{
		return isLevel(DEBUG);
	}

	/**
	 * Gets whether the current level is INFO or up.
	 * 
	 * @return whether the current level is INFO or up.
	 */
	public final boolean isInfo()
	{
		return isLevel(INFO);
	}

	/**
	 * Gets whether the current level is SUCCESS or up.
	 * 
	 * @return whether the current level is SUCCESS or up.
	 */
	public final boolean isSuccess()
	{
		return isLevel(SUCCESS);
	}

	/**
	 * Gets whether the current level is WARNING or up.
	 * 
	 * @return whether the current level is WARNING or up.
	 */
	public final boolean isWarning()
	{
		return isLevel(WARNING);
	}

	/**
	 * Gets whether the current level is ERROR or up.
	 * 
	 * @return whether the current level is ERROR or up.
	 */
	public final boolean isError()
	{
		return isLevel(ERROR);
	}

	/**
	 * Gets whether the current level is FATAL or up.
	 * 
	 * @return whether the current level is FATAL or up.
	 */
	public final boolean isFatal()
	{
		return isLevel(FATAL);
	}

	/**
	 * Returns whether this level is greater than or equal to the given level.
	 * 
	 * @param level
	 *            the level
	 * @return whether this level is greater than or equal to the given level
	 */
	public final boolean isLevel(int level)
	{
		return (getLevel() >= level);
	}

	/**
	 * Gets whether the current level is UNDEFINED.
	 * 
	 * @return whether the current level is UNDEFINED.
	 */
	public final boolean isUndefined()
	{
		return (getLevel() == UNDEFINED);
	}

	/**
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString()
	{
		return "[FeedbackMessage message = \"" + getMessage() + "\", reporter = " +
			((getReporter() == null) ? "null" : getReporter().getId()) + ", level = " +
			getLevelAsString() + ']';
	}

	/** {@inheritDoc} */
	@Override
	public void detach()
	{
		// no-op
	}
}