package bluej.utility;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JPanel;

import threadchecker.OnThread;
import threadchecker.Tag;




| A multi-line Label-like AWT component.
|
| @author Justin Tan
|
@OnThread(Tag.Swing)
public class MultiLineLabel
extends JPanel{    
   protected int fontAttributes = Font.PLAIN;
   
   protected float alignment;
   
   protected Color col = null;
   
   protected int spacing = 0;

   
   


| Constructor - make a multiline label
|
public MultiLineLabel(String text, float alignment)
   {        
      this.alignment = alignment;
       
      setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
      if (text != null) {
         setText(text);         
         }     
      }

   
   


| Constructor, defaults to centered text
|
public MultiLineLabel(String text)
   {
      this(text, LEFT_ALIGNMENT);     
      }

   
   


| Constructor, empty with the given alignment
|
public MultiLineLabel(float alignment)
   {
      this(null, alignment);     
      }

   
   


| Constructor, empty with the given alignment and line spacing
|
public MultiLineLabel(float alignment, int spacing)
   {
      this(null, alignment);
       
      this.spacing = spacing;     
      }

   
   


| Constructor - make an empty multiline label
|
public MultiLineLabel()
   {
      this(null, LEFT_ALIGNMENT);     
      }

   
   public void setText(String text)
   {        
      
      removeAll();
      addText(text);     
      }

   
   public void addText(String text)
   {
      addText(text, 12);     
      }

   
   public void addText(String text, int size)
   {
      if (spacing > 0) {
         add(Box.createVerticalStrut(spacing));         
         }

      String strs[] = Utility.splitLines(text);
       
      JLabel l;
       
      Font font = new Font("SansSerif", fontAttributes, size);

       
      for (int i = 0; strs != null && i < strs.length; i++) {            
         l = new JLabel(strs[i]);
         l.setFont(font);
         l.setAlignmentX(alignment);

         if (col != null) {
            l.setForeground(col);             
            }

         add(l);         
         }        
      }

   
   public void addText(String text, boolean bold, boolean italic)
   {        
      int oldAttributes = fontAttributes;
      setBold(bold);
      setItalic(italic);
      addText(text);
       
      fontAttributes = oldAttributes;     
      }

   
   @Override
   
   public void setForeground(Color col)
   {        
      this.col = col;    
      Component[] components = this.getComponents();
       
      for (int i = 0; i < components.length; i++) {            
         Component component = components[i];
         component.setForeground(col);         
         }     
      }

   
   public void setItalic(boolean italic)
   {
      if (italic) {            
         fontAttributes |= Font.ITALIC;         
         }
       

      else {
           
      fontAttributes &= ~Font.ITALIC;         
      }     
   }

   
public void setBold(boolean bold)
   {
   if (bold) {            
      fontAttributes |= Font.BOLD;         
      }
       

   else {
           
   fontAttributes &= ~Font.BOLD;         
   }     
} 
}