stringconverterpropertyeditor.java

JGraph扩展应用。自定义Renderer,自定义视图View实现自定义工作流控件

/**
 * @PROJECT.FULLNAME@ @VERSION@ License.
 *
 * Copyright @YEAR@ L2FProd.com
 *
 * 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 com.l2fprod.common.beans.editor;

import com.l2fprod.common.swing.LookAndFeelTweaks;
import com.l2fprod.common.util.converter.ConverterRegistry;

import javax.swing.JTextField;
import javax.swing.text.JTextComponent;

/**
 * StringConverterPropertyEditor. <br>A comma separated list of values.
 */
public abstract class StringConverterPropertyEditor
  extends AbstractPropertyEditor {

  private Object oldValue;

  public StringConverterPropertyEditor() {
    editor = new JTextField();
    ((JTextField)editor).setBorder(LookAndFeelTweaks.EMPTY_BORDER);    
  }

  public Object getValue() {
    String text = ((JTextComponent)editor).getText();
    if (text == null || text.trim().length() == 0) {
      return null;
    } else {
      try {
        return convertFromString(text.trim());
      } catch (Exception e) {
        /*UIManager.getLookAndFeel().provideErrorFeedback(editor);*/
        return oldValue;
      }
    }
  }

  public void setValue(Object value) {
    if (value == null) {
      ((JTextComponent)editor).setText("");
    } else {
      oldValue = value;
      ((JTextComponent)editor).setText(convertToString(value));
    }
  }

  protected abstract Object convertFromString(String text);

  protected String convertToString(Object value) {
    return (String)ConverterRegistry.instance().convert(String.class, value);    
  }

}