ontopoly.components.FieldInstanceTextArea.java Source code

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Here is the source code for ontopoly.components.FieldInstanceTextArea.java

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/*
 * #!
 * Ontopoly Editor
 * #-
 * Copyright (C) 2001 - 2013 The Ontopia Project
 * #-
 * 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 ontopoly.components;

import net.ontopia.topicmaps.core.OccurrenceIF;
import net.ontopia.topicmaps.core.TopicNameIF;
import net.ontopia.utils.ObjectUtils;
import ontopoly.model.FieldInstance;
import ontopoly.model.OntopolyModelRuntimeException;
import ontopoly.models.FieldValueModel;
import ontopoly.pages.AbstractOntopolyPage;

import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.html.form.TextArea;
import org.apache.wicket.model.Model;

public class FieldInstanceTextArea extends TextArea<String> {

    private FieldValueModel fieldValueModel;
    private String oldValue;

    private String cols = "50";
    private String rows = "3";

    public FieldInstanceTextArea(String id, FieldValueModel fieldValueModel) {
        super(id);
        this.fieldValueModel = fieldValueModel;

        if (!fieldValueModel.isExistingValue()) {
            this.oldValue = null;
        } else {
            Object value = fieldValueModel.getObject();
            if (value instanceof TopicNameIF) {
                TopicNameIF name = (TopicNameIF) value;
                this.oldValue = name.getValue();
            } else if (value instanceof OccurrenceIF) {
                OccurrenceIF occ = (OccurrenceIF) value;
                this.oldValue = occ.getValue();
            } else {
                throw new RuntimeException("Unsupported field value: " + value);
            }
        }
        setModel(new Model<String>(oldValue));
    }

    public void setCols(int cols) {
        this.cols = Integer.toString(cols);
    }

    public void setRows(int rows) {
        this.rows = Integer.toString(rows);
    }

    @Override
    protected void onComponentTag(ComponentTag tag) {
        tag.setName("textarea");
        tag.put("cols", cols);
        tag.put("rows", rows);
        super.onComponentTag(tag);
    }

    @Override
    protected void onModelChanged() {
        super.onModelChanged();
        try {
            String newValue = (String) getModelObject();
            if (ObjectUtils.equals(newValue, oldValue))
                return;
            AbstractOntopolyPage page = (AbstractOntopolyPage) getPage();
            FieldInstance fieldInstance = fieldValueModel.getFieldInstanceModel().getFieldInstance();
            if (fieldValueModel.isExistingValue() && oldValue != null)
                fieldInstance.removeValue(oldValue, page.getListener());
            if (newValue != null && !newValue.equals("")) {
                fieldInstance.addValue(newValue, page.getListener());
                fieldValueModel.setExistingValue(newValue);
            }
            oldValue = newValue;
        } catch (OntopolyModelRuntimeException e) {
            error(AbstractFieldInstancePanel.createErrorMessage(fieldValueModel.getFieldInstanceModel(), e));
        }
    }

}