MonitorController.java

package wf.view;

import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonBar;
import javafx.scene.control.Label;
import javafx.scene.control.Separator;
import javafx.scene.control.Slider;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.util.StringConverter;
import wf.util.ComboBoxChLabels;
import wf.util.DataHistoHandler;
import wf.util.NiceAxisScale;

public class MonitorController {

	@FXML private AnchorPane monitor_ap;
	@FXML private AnchorPane bottom_ap;
	@FXML private AnchorPane top_ap;
	@FXML private Button next_bt;
	@FXML private Button previous_bt;
	@FXML private Button close_bt;
	@FXML private ButtonBar bar_bb;
	@FXML private LineChart<Number, Number> chartLineLeft;
	@FXML private LineChart<Number, Number> chartLineRight;
	@FXML private NumberAxis leftXAxis;
    @FXML private NumberAxis leftYAxis;
    @FXML private NumberAxis rightXAxis;
    @FXML private NumberAxis rightYAxis;
	@FXML private ComboBoxChLabels chNumber_cb;
    //@FXML private ComboBox<Label> chNumber_cb;
	@FXML private GridPane grid1_gr;
	@FXML private HBox monitor_hb;
	@FXML private Label title_lb;
	@FXML private Label chNumber_lb;
	@FXML private Label wfNumber_lb;
	@FXML private Label next_lb;
	@FXML private Label previous_lb;
	@FXML private Separator north_sp;
	@FXML private Separator south_sp;
	@FXML private Slider wfSlider_sl;
	@FXML private StackPane lineChartLeftContainer_sp;
	@FXML private StackPane lineChartRightContainer_sp;
	@FXML private VBox monitor_vb;

	private ChangeListener<Number> slider_cl;

	private boolean isSliderListenerCreated = false;

	private double min;
	private double max;

	private int dataSize;
	private int selectedChannel;
	private int size;

	private static DataHistoHandler dataHistoHandler = DataHistoHandler.getInstance();
	private static NiceAxisScale nas = NiceAxisScale.getInstance();

	@FXML
	public void initialize() {

		initStyle();
		initButtons();
		initComboBoxes();
		initHistograms();
	}

	@FXML
	private void exitAction() {

		chNumber_cb.removeCellFactoryButtonCell();

		chartLineLeft.getData().clear();
		chartLineRight.getData().clear();

		wfSlider_sl.valueProperty().removeListener(slider_cl);
		monitor_ap.getScene().getWindow().hide();
	}

	private void initButtons() {

		previous_bt.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {

            	if((wfSlider_sl.getValue() - 1 >= 0)) {

            		wfSlider_sl.setValue(wfSlider_sl.getValue() - 1);
            	}
            }
        });

		next_bt.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {

            	if((wfSlider_sl.getValue() + 1 <= wfSlider_sl.getMax())) {

            		wfSlider_sl.setValue(wfSlider_sl.getValue() + 1);
            	}
            }
        });
	}

	private void initHistograms() {

		chartLineLeft.setLegendVisible(false);
		chartLineLeft.setAnimated(false);
		leftYAxis.setAutoRanging(false);
		leftXAxis.setAutoRanging(true);

		chartLineRight.setLegendVisible(false);
		chartLineRight.setAnimated(false);
		rightYAxis.setAutoRanging(false);
		rightXAxis.setAutoRanging(true);
	}

	public void setChannel() {

		chNumber_cb.getSelectionModel().select(dataHistoHandler.getChannelWithData());
		chNumber_cb.setCellFactoryButtonCell();
	}

	private void initComboBoxes() {

		chNumber_cb.setMinWidth(80);

		chNumber_cb.valueProperty().addListener(new ChangeListener<Label>() {

			 @Override
			 public void changed(ObservableValue<? extends Label> observable, Label oldValue, Label newValue) {

				 if(!newValue.isDisabled()) {

					 selectedChannel = chNumber_cb.getSelectionModel().getSelectedIndex();

					 if (newValue != oldValue) {

						 chartLineLeft.getData().clear();
						 chartLineRight.getData().clear();

						 if(wfSlider_sl.getValue() == 0) {

							 wfNumber_lb.textProperty().setValue("Waveform [0]");

							 if(dataHistoHandler.getSeriesValues().get(selectedChannel).size() > 0) {

								 chartLineLeft.getData().add(dataHistoHandler.getSeriesValues().get(selectedChannel).get(0));
								 setYAxisLeftChart();
							 }

							 if(dataHistoHandler.getSeriesValuesProc().get(selectedChannel).size() > 0) {

								 chartLineRight.getData().add(dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get(0));
								 setYAxisRightChart();
							 }

						 } else {

							 wfSlider_sl.setValue(0);
						 }
					 }

				 } else {

					 chNumber_cb.getSelectionModel().select(oldValue);
				 }
			 }
		 });
	}

	private void setYAxisLeftChart() {

		size = dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().size();

		min = 0;
		max = 0;

		for(int i = 0; i < size; i++) {

			if ( (double) dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue() > max)
		     {
		      max = (double) dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue();
		     }

			if ( (double) dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue() < min)
		     {
		      min = (double) dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue();
		     }

		}

		nas.setAxisValues(min, max, 10);

		leftYAxis.setLowerBound(nas.getNiceMin());
		leftYAxis.setUpperBound(nas.getNiceMax());
		leftYAxis.setTickUnit(nas.getTickSpacing());
	}

	private void setYAxisRightChart() {


		//uncomment if indipendent axis scaling is required
		/*
		size = dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().size();

		min = 0;
		max = 0;

		for(int i = 0; i < size; i++) {

			if ( (double) dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue() > max)
		     {
		      max = (double) dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue();
		     }

			if ( (double) dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue() < min)
		     {
		      min = (double) dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()).getData().get(i).getYValue();
		     }

		} */

		nas.setAxisValues(min, max, 10);

		rightYAxis.setLowerBound(nas.getNiceMin());
		rightYAxis.setUpperBound(nas.getNiceMax());
		rightYAxis.setTickUnit(nas.getTickSpacing());
	}

	public void initSlider() {

		dataSize = dataHistoHandler.getSeriesValues().get(dataHistoHandler.getChannelWithData()).size();

		wfSlider_sl.setMin(1); //dummy value

		if(!isSliderListenerCreated) {

			slider_cl = new ChangeListener<Number>() {

				@Override
				public void changed(
						 ObservableValue<? extends Number> observableValue,
						 Number oldValue,
						 Number newValue) {


					selectedChannel = chNumber_cb.getSelectionModel().getSelectedIndex();


					//wfNumberDisplay_lb.textProperty().setValue(String.valueOf(newValue.intValue()));
					wfNumber_lb.textProperty().setValue("Waveform [" + String.valueOf(newValue.intValue() + "]"));

					chartLineLeft.getData().clear();

					//check if data exists then add to chart
    				if(dataHistoHandler.getSeriesValues().get(selectedChannel).size() > 0) {

    					chartLineLeft.getData().add(dataHistoHandler.getSeriesValues().get(selectedChannel).get((int)wfSlider_sl.getValue()));
    					//lineChart.setTitle("Waveform [" + String.valueOf(wfNumber_cb.getSelectionModel().getSelectedIndex()) + "]");
    					setYAxisLeftChart();
    				}

					chartLineRight.getData().clear();

					//check if data exists then add to chart
    				if(dataHistoHandler.getSeriesValuesProc().get(selectedChannel).size() > 0) {

    					chartLineRight.getData().add(dataHistoHandler.getSeriesValuesProc().get(selectedChannel).get((int)wfSlider_sl.getValue()));
    					setYAxisRightChart();
    				}
				}
			};

			isSliderListenerCreated = true;
		}
		wfSlider_sl.valueProperty().addListener(slider_cl);

		wfSlider_sl.setMin(0);
		wfSlider_sl.setMax(dataSize-1);
		wfSlider_sl.setValue(0);
		wfSlider_sl.setMinorTickCount(0);
		wfSlider_sl.setMajorTickUnit(10);
		wfSlider_sl.setSnapToTicks(true);
		wfSlider_sl.setShowTickMarks(false);
		wfSlider_sl.setShowTickLabels(true);

		wfSlider_sl.setLabelFormatter(new StringConverter<Double>() {
	            @Override
	            public String toString(Double n) {
	                if (n == 0) return "0";

	                if (n == dataSize-1) return String.valueOf(dataSize-1);

	                //if (n == value) return String.valueOf(value);

	                return "";
	            }

	            @Override
	            public Double fromString(String s) {
	                switch (s) {
	                    case "0":
	                        return 0d;

	                    default:
	                        return 3d;
	                }
	            }
	        });
	 }

	private void initStyle() {

		chartLineLeft.setId("chart1");
		chartLineRight.setId("chart2");

		//grid_container_vb.setStyle(" -fx-background-color: FloralWhite;");
		monitor_vb.setStyle(" -fx-background-color: FloralWhite;");

		monitor_hb.setStyle(" -fx-background-color: FloralWhite;");

		next_bt.setId("button_bevel-grey");
		previous_bt.setId("button_bevel-grey");
		close_bt.setId("button_bevel-grey");

		title_lb.setId("appTitle");
		chNumber_lb.setId("labelDecoratedNoBkG");
		wfNumber_lb.setId("labelDecoratedNoBkG");

		top_ap.setId("topLayoutContainer");
		bottom_ap.setId("bottomLayoutContainer");
		monitor_ap.setId("appBackground");

		chNumber_cb.setId("textField3");

		lineChartLeftContainer_sp.setStyle("-fx-border-color: gray; -fx-border-width: 1; -fx-background-color: FloralWhite;");
		lineChartRightContainer_sp.setStyle("-fx-border-color: gray; -fx-border-width: 1; -fx-background-color: FloralWhite;");

		north_sp.setStyle("-fx-border-style: solid; -fx-border-width: 0.1px;");
		south_sp.setStyle("-fx-border-style: solid; -fx-border-width: 0.1px;");
	}
}