Example usage for com.badlogic.gdx.scenes.scene2d.utils Selection isEmpty

Introduction

In this page you can find the example usage for com.badlogic.gdx.scenes.scene2d.utils Selection isEmpty.

Prototype

public boolean isEmpty() 

Source Link

Usage

From source file:com.bladecoder.engineeditor.ui.components.EditTree.java

License:Apache License

public EditTree(Skin skin) {
    super(skin);//from  w w w.  ja v  a 2 s  .  co  m

    this.skin = skin;
    upBtn = new ImageButton(skin);
    downBtn = new ImageButton(skin);
    leftBtn = new ImageButton(skin);
    rightBtn = new ImageButton(skin);

    tree = new Tree(skin);

    ScrollPane scrollPane = new ScrollPane(tree, skin);
    container = new Container<ScrollPane>(scrollPane);
    container.fill();
    container.prefHeight(1000);

    toolbar = new EditToolbar(skin);
    //      debug();
    add(toolbar).expandX().fillX();
    row().fill();
    add(container).expandY().fill();

    toolbar.addToolBarButton(upBtn, "ic_up", "Move up", "Move up");
    toolbar.addToolBarButton(downBtn, "ic_down", "Move down", "Move down");
    toolbar.addToolBarButton(leftBtn, "ic_left", "Child", "Move to child option");
    toolbar.addToolBarButton(rightBtn, "ic_right", "Parent", "Move to parent option");
    toolbar.addCreateListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            create();
        }
    });

    toolbar.addEditListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            edit();
        }
    });

    toolbar.addDeleteListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            delete();
        }
    });

    toolbar.addCopyListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            copy();
        }
    });

    toolbar.addPasteListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            paste();
        }
    });

    upBtn.addListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            upNode();
        }
    });

    downBtn.addListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            downNode();
        }
    });

    leftBtn.addListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            leftNode();
        }
    });

    rightBtn.addListener(new ChangeListener() {

        @Override
        public void changed(ChangeEvent event, Actor actor) {
            rightNode();
        }
    });

    tree.addListener(new ChangeListener() {
        @Override
        public void changed(ChangeEvent event, Actor actor) {
            Selection<Node> selection = tree.getSelection();

            if (selection.isEmpty()) {
                upBtn.setDisabled(true);
                downBtn.setDisabled(true);

                leftBtn.setDisabled(true);
                rightBtn.setDisabled(true);
            } else {

                Node nodeSel = selection.first();

                int level = nodeSel.getLevel();
                Array<Node> siblings = getSiblings();

                upBtn.setDisabled(siblings.get(0) == nodeSel);
                downBtn.setDisabled(siblings.get(siblings.size - 1) == nodeSel);

                leftBtn.setDisabled(level == 1);
                rightBtn.setDisabled(siblings.get(0) == nodeSel);
            }

            toolbar.disableEdit(selection == null);
        }

    });
}

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