package com.jsql.view.swing.text;
   
   import com.jsql.util.LogLevelUtil;
   import com.jsql.view.swing.util.UiUtil;
   import org.apache.commons.lang3.StringUtils;
   import org.apache.logging.log4j.LogManager;
   import org.apache.logging.log4j.Logger;
   
   import javax.swing.*;
  import java.awt.*;
  
  /**
   * Textfield with information text displayed when empty.
   */
  public class JTextAreaPlaceholder extends JTextArea {
      
      /**
       * Log4j logger sent to view.
       */
      private static final Logger LOGGER = LogManager.getRootLogger();
      
      /**
       * Text to display when empty.
       */
      private String placeholderText;
      
      /**
       * Create a textfield with hint.
       * @param placeholder Text displayed when empty
       */
      public JTextAreaPlaceholder(String placeholder) {
          this.placeholderText = placeholder;
          UiUtil.init(this);
      }
  
      @Override
      public void paint(Graphics g) {
          // Fix #6350: ArrayIndexOutOfBoundsException on paint()
          // Fix #90822: IllegalArgumentException on paint()
          // Fix #90761: StateInvariantError on paint()
          // StateInvariantError possible on jdk 8 when WrappedPlainView.drawLine in paint()
          try {
              super.paint(g);
              if (StringUtils.isEmpty(this.getText())) {
                  UiUtil.drawPlaceholder(this, g, this.placeholderText);
              }
          } catch (IllegalArgumentException | NullPointerException | ArrayIndexOutOfBoundsException e) {
              LOGGER.log(LogLevelUtil.CONSOLE_JAVA, e, e);
          }
      }
  
      public void setPlaceholderText(String placeholderText) {
          this.placeholderText = placeholderText;
      }
  }