package greenfoot.guifx;

import bluej.Config;
import bluej.utility.DialogManager;
import bluej.utility.javafx.FXCustomizedDialog;

import javafx.embed.swing.SwingFXUtils;
import javafx.geometry.Pos;
import javafx.geometry.Rectangle2D;
import javafx.scene.control.*;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Priority;
import javafx.scene.layout.VBox;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.Window;
import threadchecker.OnThread;
import threadchecker.Tag;

import javax.imageio.ImageIO;
import java.io.File;
import java.io.IOException;




| A dialog to ask the user for a pasted image name.
|
| @Author Amjad Altadmri
|
@OnThread(Tag.FXPlatform)
public class PastedImageNameDialog extends FXCustomizedDialog<File>{    
   private final File projImagesDir;
   
   private final Image image;
   
   private final TextField fileNameField = new TextField();

   
   


| Create a paste image dialog. This is used to show the clipboard image contents
| and to request a name for the new pasted image.
|
| @param parent        The parent window associated with this dialog
| @param image         The pasted content as an image object.
| @param projImagesDir The directory in which the images for the project are placed.
|
public PastedImageNameDialog(Window parent, Image image, File projImagesDir)
   {
      super(parent, Config.getString("editor.paste.image.title"), "");

       
      this.projImagesDir = projImagesDir;
       
      this.image = image;
      buildUI();     
      }

   
   


| Build the user interface for the dialog.
|
private void buildUI()
   {
      fileNameField.setAlignment(Pos.BASELINE_LEFT);
      fileNameField.setPromptText(Config.getString("editor.paste.image.name.prompt"));
      fileNameField.requestFocus();

       
      HBox fileNameRow = new HBox(new Label(Config.getString("editor.paste.image.prompt")), fileNameField, new Label(".png"));
      fileNameRow.setAlignment(Pos.BASELINE_LEFT);
      HBox.setHgrow(fileNameField, Priority.ALWAYS);

       
      VBox bodyPanel = new VBox(20, new ImageView(image), fileNameRow);
      bodyPanel.setAlignment(Pos.CENTER);
       
      ScrollPane sp = new ScrollPane();
      sp.setContent(bodyPanel);
      setContentPane(sp);

       
      
      final Window window = this.getDialogPane().getScene().getWindow();
      Stage stage = (Stage) window;
      stage.setMinWidth(350);
      stage.setMinHeight(300);

       
      
      
      
      
      this.getDialogPane().setMaxWidth(900);
      this.getDialogPane().setMaxHeight(900);

       
      
      stage.setX(this.getOwner().getX() + 50 );
      stage.setY(this.getOwner().getY() + 50);

       
      
      getDialogPane().getButtonTypes().addAll(ButtonType.OK, ButtonType.CANCEL);
      Button okButton = (Button) getDialogPane().lookupButton(ButtonType.OK);
      okButton.disableProperty().bind(fileNameField.textProperty().isEmpty());
      setResultConverter(bt -> bt == ButtonType.OK ? createImageFile() : null);     
      }

   
   


| Creates an image file with the name specified in the name text field.
| If there is a file with the same name in the images folder, it prompts the
| user to overwrite or cancel. If the file is created successfully, the pasted
| contents will be written in it and it will be written on the disk.
|
| @return If the image file was created successfully, it will be returned.
|         If the file has not been written successfully or the user
|         chose not to overwrite an existing file, null will be returned.
|
private File createImageFile()
   {        
      File file = new File(projImagesDir, fileNameField.getText() + ".png");
      if (file.exists())
       {            
         boolean overwrite = DialogManager.askQuestionFX(this.asWindow(), "file-exists-overwrite", new String[] {file.getName()
         }) == 0;
      return overwrite && writeImage(file) ? file : null;         
      }
   return writeImage(file) ? file : null;     
   }

   



| Writes the passed file as an image on the disk.
|
| @param file The image file to be written.
| @return True if the file is written successfully on the disk, false otherwise.
|
private boolean writeImage(File file)
   {        
   try
       {
      if (ImageIO.write(SwingFXUtils.fromFXImage(image, null), "png", file))
           {                
         return true;             
         }         
      }
       
   catch (IOException ex)
       {            
               
      }
   DialogManager.showErrorFX(asWindow(), "imagelib-writing-image-failed");
       
   return false;     
   } 
}