package bluej.stride.generic;

import java.util.IdentityHashMap;

import javafx.scene.Node;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;

import bluej.Config;
import bluej.editor.stride.CodeOverlayPane;
import bluej.stride.generic.InteractionManager.ShortcutKey;
import bluej.utility.javafx.FXRunnable;
import bluej.utility.javafx.JavaFXUtil;
import threadchecker.OnThread;
import threadchecker.Tag;

public class SuggestedFollowUpDisplay
{       
private final InteractionManager editor;
   
   private final FXRunnable action;
   
   private final VBox content = new VBox();
   
   
   
   private static final IdentityHashMap<InteractionManager, SuggestedFollowUpDisplay> displays = new IdentityHashMap<>();
    
   
   public SuggestedFollowUpDisplay(InteractionManager editor, String text, FXRunnable action)
   {        
      this.editor = editor;
       
      this.action = action;
      JavaFXUtil.addStyleClass(content, "suggested-followup-pane");

       
      Button yes = new Button("Yes (" + Config.getKeyCodeForYesNo(ShortcutKey.YES_ANYWHERE) + ")");
       
      yes.setOnAction(e -> { action.run(); hide(); 
      });
   Button no = new Button("No (" + Config.getKeyCodeForYesNo(ShortcutKey.NO_ANYWHERE) + ")");
   no.setOnAction(e -> hide());
        
       
   HBox hbox = new HBox(yes, no);
   JavaFXUtil.addStyleClass(hbox, "suggested-followup-hbox");
        
       
   content.getChildren().addAll(new Label(text), hbox);
        
   CodeOverlayPane.setDropShadow(content);     
   }

@OnThread(Tag.FXPlatform)
   
public void showBefore(final Node n)
   {        
   
   if (displays.get(editor) != null)
       {
      displays.get(editor).hide();          
      }
        
   editor.getCodeOverlayPane().addOverlay(content, n, null, content.heightProperty().add(5.0).negate());
       
   
   
   content.toBack();
   displays.put(editor, this);     
   }

   
public void hide()
   {
   JavaFXUtil.runNowOrLater(() -> editor.getCodeOverlayPane().removeOverlay(content));
   displays.remove(editor);     
   }

@OnThread(Tag.FXPlatform)
   
public static void shortcutTyped(InteractionManager editor, ShortcutKey key)
   {
   SuggestedFollowUpDisplay display = displays.get(editor);
   if (display != null)
       {
      if (key == ShortcutKey.YES_ANYWHERE)
      display.action.run();
      display.hide();         
      }     
   }

   
public static void modificationIn(InteractionManager editor)
   {
   SuggestedFollowUpDisplay display = displays.get(editor);
   if (display != null)
       {
      display.hide();         
      }     
   } 
}