package com.jsql.view.swing.text;
   
   import com.jsql.util.LogLevelUtil;
   import com.jsql.view.swing.popupmenu.JPopupMenuComponent;
   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 org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
  import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
  import org.fife.ui.rsyntaxtextarea.Token;
  
  import java.awt.*;
  import java.awt.event.FocusAdapter;
  import java.awt.event.FocusEvent;
  
  public class SyntaxTextArea extends RSyntaxTextArea {
  
      /**
       * Log4j logger sent to view.
       */
      private static final Logger LOGGER = LogManager.getRootLogger();
  
      private String placeholderText;
  
      public SyntaxTextArea() {
          this(StringUtils.EMPTY);
      }
  
      public SyntaxTextArea(String text) {
          this.placeholderText = text;
  
          this.setPopupMenu(new JPopupMenuComponent(this));
          this.getCaret().setBlinkRate(0);
          this.addFocusListener(new FocusAdapter() {
              @Override
              public void focusGained(FocusEvent focusEvent) {
                  SyntaxTextArea.this.getCaret().setVisible(true);
                  SyntaxTextArea.this.getCaret().setSelectionVisible(true);
              }
          });
          this.setCursor(Cursor.getPredefinedCursor(Cursor.TEXT_CURSOR));
          this.setSyntaxEditingStyle(SyntaxConstants.SYNTAX_STYLE_SQL);
          this.setMarkOccurrences(true);
          this.setMarkOccurrencesDelay(200);
      }
  
      @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()) && StringUtils.isNotEmpty(this.placeholderText)) {
                  UiUtil.drawPlaceholder(this, g, this.placeholderText);
              }
          } catch (IllegalArgumentException | NullPointerException | ArrayIndexOutOfBoundsException e) {
              LOGGER.log(LogLevelUtil.CONSOLE_JAVA, e, e);
          }
      }
  
      @Override
      public Font getFont() {
          return UiUtil.FONT_MONO_NON_ASIAN;
      }
      @Override
      public Font getFontForToken(Token token) {
          return UiUtil.FONT_MONO_NON_ASIAN;
      }
      @Override
      public Font getFontForTokenType(int type) {
          return UiUtil.FONT_MONO_NON_ASIAN;
      }
  
      public void setPlaceholderText(String placeholderText) {
          this.placeholderText = placeholderText;
      }
  }