Add .png icons to choicebox

I have a list of observable

public static final String LIN = "Line";
    public static final String VERTICAL = "Vertical";
    public static final String HORIZONTAL = "Horizontal";
    public static final String ARROW = "Arrow";
    public static final String CHANNEL = "Channel";
    public static final String FREEHAND = "Freehand";    
    public static final String RECTANGLE = "Rectangle";
    public static final String ELLIPSE = "Ellipse";
    public static final String DOT = "Dot";
    public static final String TEXT = "Text";

    public static final ObservableList<Object> DRAW_TOOLS = FXCollections.observableArrayList(LIN, VERTICAL, HORIZONTAL, ARROW, CHANNEL,
            FREEHAND, new Separator(), RECTANGLE, ELLIPSE, DOT, new Separator(), TEXT);

and a choicebox

choiceboxDrawList.setItems(ChartConstants.DRAW_TOOLS);

http://S28.postimg.org/5nx5t2m3x/ZA147.PNG

I would like to add icons to each element of choicebox: icons are in a local folder

C:/Java/icons

and has the same name as an element in ObservableList (line.png, vertical.png, etc.).

How to get there? Examples have really enjoyed.

Thank you

Use a ComboBox instead of a ChoiceBox and plant cells.

Something like

//

ComboBox comboBoxDrawList ;
// ...
final Map icons = ChartConstants.DRAW_TOOLS.stream()
       .collect(Collectors.toMap(Function.identity(), this::createImageForDrawTool));
comboBoxDrawList.setItems(ChartConstants.DRAW_TOOLS);
comboBoxDrawList.setCellFactory(listView -> new ListCell() {
    @Override
    public void updateItem(String s, boolean empty) {
        if (empty) {
            setText(null);
            setGraphic(null);
       } else {
            setText(s);
            setGraphic(icons.get(s));
       }
   }
});

// ...
private ImageView createImageForDrawTool(String drawTool) {
   String file = ... ; // filename relative to classpath, depends on drawTool
   return new ImageView(getClass().getResource(file));
}

//

Of course, you can create a class (or same enum) to DrawTool, encapsulating the name and the image if you wish.

Tags: Java

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