package erro; 

import javafx.application.Application;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.beans.value.ObservableValue;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.TableCell;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableColumn.CellDataFeatures;
import javafx.scene.control.TableView;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;
import resources.CssUtils;

public class TableMemTest extends Application {
	
	public static void main(String[] args) {
		launch(args);
	}

	@Override 
	public void start(final Stage stage) throws Exception {
		final VBox root = new VBox();
		root.setPadding(new Insets(10));
		final Label memo = new Label("Click to add Tables. GC collect OK. If select row in tables. No GC collect");
		root.getChildren().add(memo);
		
		final VBox content = new VBox();
		content.setPadding(new Insets(10));
		root.getChildren().add(content);
		memo.setOnMouseClicked(new EventHandler<Event>() {
			public void handle(Event arg0) {
				content.getChildren().clear();
				for (int i = 0; i < 100; i++) {
					content.getChildren().add(createTable());
				}				
				memo.setText(updateMen());
			};
		});
		
		Scene scene = new Scene(root, 850, 500);
		scene.getStylesheets().add(CssUtils.getCss());
		stage.setScene(scene);
		stage.setTitle("Teste");
		stage.show();
	}
	
	public String updateMen() {
		Runtime r = Runtime.getRuntime();
		r.gc();
		long total = r.totalMemory();
		long max = r.maxMemory();
		long used = total - r.freeMemory();
		return "" + ((double)used / 1024 / 1024) + "/" + ((double)total / 1024 / 1024);
	}
	
	public TableView<Object> createTable() {
		TableView<Object> tableView1 = new TableView<>();
		tableView1.setMinHeight(100);
		tableView1.setPrefHeight(100);
		tableView1.setPrefWidth(800);		
		tableView1.getColumns().addAll(createColumn("Column1", 100), createColumn("Column2", 400), createColumn("Column3", 50));		
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		tableView1.getItems().add(new String[] {"Valor 1", "Valor 2", "Valor 3"});
		return tableView1;
	}
	
	public TableColumn<Object, Object> createColumn(String text, int w) {
		TableColumn<Object, Object> tableColumn = new TableColumn<>();
		tableColumn.setText(text);
		tableColumn.setPrefWidth(w);	

		tableColumn.setCellValueFactory(new Callback<TableColumn.CellDataFeatures<Object,Object>, ObservableValue<Object>>() {
			@Override
			public ObservableValue<Object> call(CellDataFeatures<Object, Object> cell) {
				try {
					return new ReadOnlyObjectWrapper<Object>("Valor X");
				} catch (Exception e) {
					e.printStackTrace();
					return null;
				}
			}
		});

		tableColumn.setCellFactory(new Callback<TableColumn<Object,Object>, TableCell<Object,Object>>() {					
			@Override
			public TableCell<Object, Object> call(TableColumn<Object, Object> column) {
				return new TableCell<>();
			}
		});
		
		return tableColumn;
	}
	
	
	
}