DropMenu.java

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// -*- Java -*-
package pkgMcj;

import java.io.*;
import java.util.*;
import pkgView.*;



public class DropMenu {

   private Mcj mcj;
   private Vector vector;
   private ScreenKit sk = ScreenKit.getSingleton();
   private Keyboard kb = Keyboard.getSingleton();

   private int defaultColor = sk.PAIR_WHITE_BLUE;
   private int activeColor = sk.PAIR_BLACK_WHITE;
   private int panelId;

   private TextItem title;  // dropmenu title
   private TextItem item;


   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public DropMenu( Mcj app, String titleStr, int row, int col){
      mcj = app;
      vector = new Vector();
      //setColors(sk.PAIR_BLACK_WHITE,sk.PAIR_WHITE_BLUE);
      fieldWidth = titleStr.length();
      title = new TextItem( titleStr, fieldWidth );
      title.setColors( sk.PAIR_BLACK_CYAN, sk.PAIR_WHITE_BLACK );
      title.setPosition( row, col);
      //      leftItem.setAttribute(sk.SK_BOLD);
   }

   private DropMenu(){ }

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   private int fieldWidth;
   public int getFieldWidth(){
     return this.fieldWidth; 
   } // getFieldWidth()


   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void redraw(){
      int i;
      title.setSelected( hasFocus() );
      title.redraw();
      for( i=0; i < vector.size(); i++ ){
         item = (TextItem)vector.elementAt(i);
         item.setSelected( displayRow==i );
         item.redraw();
      }
   }
   
   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   public void addItem( TextItem textItem ){
      vector.add(textItem);
   }

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

   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   private boolean hasFocus( ){
      int tv = mcj.currentMode;

      boolean tf = false;
      if( tv == mcj.STATE_PULDN ){
         tf =
            (panelId == mcj.DROP_LEFT ||
             panelId == mcj.DROP_FILE ||
             panelId == mcj.DROP_OPTION ||
             panelId == mcj.DROP_CMD ||
             panelId == mcj.DROP_RIGHT 
             );
      }
      return tf;
   }
   private int displayRow; // position of highlighted item
   //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   private boolean updateRow( int k ){
      if( !hasFocus() ) return false;
      int now = displayRow;
      int tv = vector.size();
      if( tv < 1 ) return false;
      switch (k){

      case kb.KEY_DOWN:
         if( ++displayRow >= tv ){
            displayRow = tv-1;
         }
         break;

      case kb.KEY_UP:
         if( --displayRow < 0 ){
            displayRow = 0;
         }
         break;
         
      case kb.KEY_ENTER:
         /*
         if( displayRow == 0 ){
            loadPage(folder1.getParentName());
         }else{
            prow = rows[displayRow];
            String path = prow.file.getAbsolutePath();
            mcj.logFile.putString( path );
            loadPage( path );
         }
         now = -1;
         displayRow = 0;
         */
         break;

      case kb.KEY_HOME:
         now = -1;
         //folder1.setAnchor(0);
         //loadView();
         break;

      case kb.KEY_PGDN:
         //folder1.setAnchor( folder1.getAnchor() + (NUM_TXT_ROWS-1));
         now = -1;
         //loadView();
         break;

      case kb.KEY_PGUP:
         //folder1.setAnchor( folder1.getAnchor() - (NUM_TXT_ROWS-1));
         now = -1;
         //loadView();
         break;
      default:
         break;
      }
      return (now != displayRow);
   }


}  // DropMenu.java

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