package greenfoot.guifx.soundrecorder;

import bluej.Config;
import bluej.utility.DialogManager;
import bluej.utility.javafx.JavaFXUtil;
import greenfoot.sound.SoundRecorder;

import java.io.File;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.geometry.Pos;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.stage.Window;
import threadchecker.OnThread;
import threadchecker.Tag;




| This class manages the saving aspect of SoundRecorderControls:
| keeping track of whether the sound has changed since last save,
| displaying the overwrite dialog, updating the status message
|
| @author Amjad Altadmri
|
@OnThread(Tag.FXPlatform)
class SaveState
{       
private final Window parent;
   
   private final SoundRecorder recorder;
   
   private final TextField filenameField = new TextField();
   
   private final Button saveButton = new Button(Config.getString("soundRecorder.save"));
   
   private String lastSaveName = null;
   
   private final SimpleBooleanProperty saved = new SimpleBooleanProperty(true);
   
   private final SimpleBooleanProperty changedSinceSave = new SimpleBooleanProperty(false);
   
   
   private File projectSoundDir;

   SaveState(Window parent, SoundRecorder recorder)
   {        
      this.parent = parent;
       
      this.recorder = recorder;

      JavaFXUtil.addChangeListenerPlatform(changedSinceSave, changed -> updateSavedStatus());
      JavaFXUtil.addChangeListenerPlatform(filenameField.textProperty(), text -> updateSavedStatus());     
      }

   
   


| Builds the save row: a filename field and save button
|
| @return a HBox which contains the gui nodes needed for saving a file
|
HBox buildSaveBox()
   {
      saveButton.setDisable(true);
      saveButton.setOnAction(event -> {
      if (projectSoundDir != null)
           {                
         File destination = new File(projectSoundDir, filenameField.getText() + ".wav");
         if (destination.exists())
               {                    
            boolean overwrite = DialogManager.askQuestionFX(parent, "file-exists-overwrite", new String[] {destination.getName()
            }) == 0;
         if (overwrite)
                   {
            saveWAV(destination);                     
            }                 
         }
               

      else
               {
         saveWAV(destination);                  
         }             
      }         
   });
updateSavedStatus();

       
HBox fileBox = new HBox(3);
fileBox.setAlignment(Pos.CENTER);
       
fileBox.getChildren().addAll(new Label(Config.getString("soundRecorder.filename") + ": "), filenameField, new Label(".wav"));

       
HBox saveBox = new HBox(20);
saveBox.setAlignment(Pos.CENTER);
saveBox.getChildren().addAll(fileBox, saveButton);
       
return saveBox;     
}

p.public void changed(boolean value)
   {
   changedSinceSave.set(value);
   updateSavedStatus();     
   }

SimpleBooleanProperty savedProperty()
   {        
   return saved;     
   }

   



| Updates the save status and save button based on whether the filename field and the recording changes.
|
private void updateSavedStatus()
   {
   boolean emptyRecorded =  recorder.getRawSound() == null;
   boolean differentFromSaved = !filenameField.textProperty().get().equals(lastSaveName) || changedSinceSave.get();
   saved.set(emptyRecorded || !differentFromSaved);
   boolean emptyTextField = filenameField.textProperty().isEmpty().get();
   saveButton.disableProperty().set(emptyTextField || saved.get());     
   }

   
private void saveWAV(File destination)
   {
   recorder.writeWAV(destination);
   savedAs(filenameField.getText());     
   }

   
private void savedAs(String name)
   {        
   lastSaveName = name;
   changed(false);     
   }

   



| Set the directory to save sounds into for this project.  May be null.
|
public void setProjectSoundDir(File projectSoundDir)
   {        
   this.projectSoundDir = projectSoundDir;     
   } 
}