TextItem.java

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// -*-Java-*-


package pkgView;

public class TextItem {
   private boolean selected, mayEdit;

   private int defaultColor, activeColor, colorFlag;
   private int yPos, xPos;
   private int fieldWidth = 0;
   private StringBuffer txtMsg;
   private ScreenKit sk = ScreenKit.getSingleton();
   private int charIndex;

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public TextItem( String msg, int len){
      selected = false;
      mayEdit = false;
      colorFlag = 0;
      yPos = xPos = 0;
      this.fieldWidth = len;
      charIndex = 0;            // akin to cursor position offset
      setText(msg);
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void setText( String msg ){
      if( fieldWidth < 1 ) return;
      try {
         txtMsg = new StringBuffer(msg);
         charIndex = txtMsg.length();
         while( txtMsg.length() < fieldWidth ){
            txtMsg.append(" ");
         }
      }
      catch( Exception e ) {
         System.err.println( e.getMessage() );
      }

   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void moveRight(){
      if( ++charIndex >= fieldWidth ){
         charIndex = 0;
      }
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void moveLeft(){
      if( --charIndex <= 0 ){
         charIndex = 0;
      }
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void putChar( char ch ){
      try {
         if( charIndex < txtMsg.length() ){
            txtMsg.setCharAt(charIndex++,ch);
         }
      }
      catch( Exception e ) {
         System.err.println( e.getMessage() );
      }
   }
      

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void eraseLine( ){
      for( int i=0; i < txtMsg.length(); i++ ){
         txtMsg.setCharAt( i, ' ' );
      }
      charIndex = 0;
   }
      

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public String getText(){
      return txtMsg.toString();
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void setSelected( boolean bFlag){
         selected = bFlag;
   } // setSelected


   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void redraw(){
      if( fieldWidth < 1 ) return;
      String jstr = txtMsg.toString();
      int len = jstr.length();
      if( selected ){
         sk.ttyMvAddStr(yPos,xPos,jstr,len,colorFlag,activeColor);
      }
      else{
         sk.ttyMvAddStr(yPos,xPos,jstr,len,colorFlag,defaultColor);
      }
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void setAttribute( int value ){
      colorFlag = value;
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public boolean isSelected(){
      // usually used for menu traversal
      return selected;
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void setColors( int color1, int color2 ){
      defaultColor = color1;
      activeColor = color2;
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void setPosition( int y, int x ){
      yPos = y;
      xPos = x;
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public int getRow(){
      return yPos;
   }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void enableEdit( boolean bFlag){
      mayEdit = bFlag;
   }
} // end class TextItem

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