de.topicmapslab.kuria.runtime.table.ColumnBinding.java Source code

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Here is the source code for de.topicmapslab.kuria.runtime.table.ColumnBinding.java

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/*******************************************************************************
 * Copyright 2010, Topic Maps Lab
 * 
 * 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.
 ******************************************************************************/
/**
 * 
 */
package de.topicmapslab.kuria.runtime.table;

import java.lang.reflect.InvocationTargetException;

import org.apache.commons.beanutils.PropertyUtils;

/**
 * A ColumnBinding connects a field of a class with a {@link TableBinding}.
 * <p>
 * Each {@link ColumnBinding} Specifies a title and an image of the column. The
 * title can be sued as label for the column inside a column header.
 * </p>
 * <p>
 * If an image is given is used in some UIs as visual representation of the
 * type.
 * </p>
 * 
 * @author Hannes Niederhausen
 * @version 1.0.0
 */
public class ColumnBinding implements IColumnBinding {

    private String fieldName;

    /** The column title */
    private String columnTitle;

    /** the column image */
    private String columnImage;

    /** the column image method name */
    private String columnImageMethod;

    /** the column text method name */
    private String columnTextMethod;

    /**
     *  {@inheritDoc}
     */
    public String getColumnImage(Object instance) {
        try {
            if (columnImageMethod != null) {
                return (String) instance.getClass().getDeclaredMethod(columnImageMethod).invoke(instance);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return columnImage;
    }

    /**
     *  {@inheritDoc}
     */
    public String getColumnTitle() {
        if (columnTitle == null)
            return Character.toUpperCase(fieldName.charAt(0)) + fieldName.substring(1);
        return columnTitle;
    }

    /**
     * Sets the path to the column image.
     * 
     * @param columnImage
     */
    public void setColumnImage(String columnImage) {
        this.columnImage = columnImage;
    }

    /**
     * Sets the title of the column.
     * 
     * @param columnTitle
     */
    public void setColumnTitle(String columnTitle) {
        this.columnTitle = columnTitle;
    }

    public void setFieldName(String fieldName) {
        this.fieldName = fieldName;
    }

    /**
     *  {@inheritDoc}
     */
    public Object getValue(Object instance)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
        return PropertyUtils.getProperty(instance, fieldName);
    }

    /**
     *  {@inheritDoc}
     */
    public void setValue(Object instance, Object value)
            throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
        PropertyUtils.setProperty(instance, fieldName, value);
    }

    /**
     *  {@inheritDoc}
     */
    public String getColumnImageMethod() {
        return columnImageMethod;
    }

    /**
     *  {@inheritDoc}
     */
    public String getColumnTextMethod() {
        return columnTextMethod;
    }

    /**
     *  {@inheritDoc}
     */
    public String getColumnText(Object instance) {
        try {
            if (columnTextMethod != null) {
                return (String) instance.getClass().getDeclaredMethod(columnTextMethod).invoke(instance);
            }
            return null;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }

    }

    /**
     * Sets the column image method name
     * @param columnImageMethod
     */
    public void setColumnImageMethod(String columnImageMethod) {
        this.columnImageMethod = columnImageMethod;
    }

    /**
     * Sets the column image method name
     * 
     * @param columnTextMethod
     */
    public void setColumnTextMethod(String columnTextMethod) {
        this.columnTextMethod = columnTextMethod;
    }

}