org.projectforge.web.wicket.components.MaxLengthTextArea.java Source code

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Here is the source code for org.projectforge.web.wicket.components.MaxLengthTextArea.java

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/////////////////////////////////////////////////////////////////////////////
//
// Project ProjectForge Community Edition
//         www.projectforge.org
//
// Copyright (C) 2001-2013 Kai Reinhard (k.reinhard@micromata.de)
//
// ProjectForge is dual-licensed.
//
// This community edition is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as published
// by the Free Software Foundation; version 3 of the License.
//
// This community edition is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, see http://www.gnu.org/licenses/.
//
/////////////////////////////////////////////////////////////////////////////

package org.projectforge.web.wicket.components;

import org.apache.wicket.markup.html.form.FormComponent;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.model.IModel;
import org.apache.wicket.validation.validator.StringValidator;

public class MaxLengthTextArea extends TextArea<String> {
    private static final long serialVersionUID = 1507157818607697767L;

    private Integer maxLength;

    /**
     * Tries to get the length definition of the Hibernate configuration. If not available then a warning will be logged. <br/>
     * Example:
     * 
     * @param id
     * @param label needed for validation error messages. Is also used for setting label via wicket id [label]Label.
     * @param model
     * @see org.apache.wicket.Component#Component(String, IModel)
     * @see FormComponent#setLabel(IModel)
     */
    public MaxLengthTextArea(final String id, final IModel<String> model) {
        super(id, model);
        final Integer length = MaxLengthTextField.getMaxLength(model);
        init(id, length);
    }

    /**
     * @param id
     * @param label needed for validation error messages.
     * @param model
     * @param maxLength
     * @see org.apache.wicket.Component#Component(String, IModel)
     * @see FormComponent#setLabel(IModel)
     */
    public MaxLengthTextArea(final String id, final IModel<String> model, final int maxLength) {
        super(id, model);
        final Integer length = MaxLengthTextField.getMaxLength(model, maxLength);
        init(id, length);
    }

    private void init(final String id, final Integer maxLength) {
        if (maxLength != null) {
            add(StringValidator.maximumLength(maxLength));
            // add(AttributeModifier.replace("maxlength", String.valueOf(maxLength))); // Not supported by html textarea!
            this.maxLength = maxLength;
        }
    }

    /**
     * @return the maxLength
     */
    public Integer getMaxLength() {
        return maxLength;
    }
}