package edu.umd.cs.piccolox.swt;

import junit.framework.TestCase;
import edu.umd.cs.piccolo.PCamera;
import edu.umd.cs.piccolo.PNode;
import edu.umd.cs.piccolo.event.PInputEventListener;
import edu.umd.cs.piccolox.util.PBoundsLocator;

public class PSWTBoundsHandleTest extends TestCase {
    private PNode node;

    public void setUp() {
        node = new PNode();
        node.setBounds(0, 0, 100, 100);
    }

    public void testAddBoundsHandlesToNodeAddsHandles() {
        PSWTBoundsHandle.addBoundsHandlesTo(node);
        assertEquals(8, node.getChildrenCount());

        for (int i = 0; i < 8; i++) {
            PNode child = node.getChild(i);
            assertTrue(child instanceof PSWTBoundsHandle);
        }
    }

    public void testAddStickyBoundsHandlesToNodeAddsHandles() {
        PCamera camera = new PCamera();
        PSWTBoundsHandle.addStickyBoundsHandlesTo(node, camera);
        assertEquals(0, node.getChildrenCount());
        assertEquals(8, camera.getChildrenCount());

        for (int i = 0; i < 8; i++) {
            PNode child = camera.getChild(i);
            assertTrue(child instanceof PSWTBoundsHandle);
        }
    }

    public void testRemoveBoundsHandlesRemovesOnlyHandles() {
        PNode child = new PNode();
        node.addChild(child);
        PSWTBoundsHandle.addBoundsHandlesTo(node);
        PSWTBoundsHandle.removeBoundsHandlesFrom(node);
        assertEquals(1, node.getChildrenCount());
        assertEquals(child, node.getChild(0));
    }

    public void testRemoveBoundsHandlesDoesNothingWhenNoHandles() {
        PNode child = new PNode();
        node.addChild(child);
        PSWTBoundsHandle.removeBoundsHandlesFrom(node);
        assertEquals(1, node.getChildrenCount());
    }

    public void testCursorHandlerIsInstalledByDefault() {
        PSWTBoundsHandle handle = new PSWTBoundsHandle(PBoundsLocator.createEastLocator(node));
        PInputEventListener dragHandler = handle.getHandleDraggerHandler();
        PInputEventListener cursorHandler = handle.getHandleCursorEventHandler();
        assertNotNull(cursorHandler);
        PInputEventListener[] listeners = handle.getInputEventListeners();
        assertEquals(2, listeners.length);
        assertTrue(cursorHandler == listeners[0] || cursorHandler == listeners[1]);
        assertTrue(dragHandler == listeners[0] || dragHandler == listeners[1]);
    }
}