/*******************************************************************************
* Copyright (c) 2012, 2013 Original authors and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Original authors and others - initial API and implementation
******************************************************************************/
package org.eclipse.nebula.widgets.nattable.viewport;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import org.eclipse.nebula.widgets.nattable.test.fixture.layer.ViewportLayerFixture;
import org.eclipse.nebula.widgets.nattable.viewport.HorizontalScrollBarHandler;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.ScrollBar;
import org.junit.Before;
import org.junit.Test;
/**
* Test for Horizontal scrolling of the viewport.
*
* The <code>DataLayerFixture</code> has the following config. Used by all
* tests. The viewport is 200px wide.
*
* Col pos 0 1 2 3 4 ------ ---- - ---- --- Col width 150 100 35 100 80
*/
public class HorizontalScrollBarHandlerTest {
ViewportLayerFixture viewport;
private ScrollBar scrollBar;
private HorizontalScrollBarHandler scrollHandler;
@Before
public void init() {
viewport = new ViewportLayerFixture();
scrollBar = ViewportLayerFixture.DEFAULT_SCROLLABLE.getHorizontalBar();
scrollHandler = new HorizontalScrollBarHandler(viewport, scrollBar);
assertEquals(0, viewport.getColumnIndexByPosition(0));
assertEquals(1, viewport.getColumnIndexByPosition(1));
}
private void scrollViewportByOffset(int offset) {
scrollHandler.setViewportOrigin(viewport.getOrigin().getX() + offset);
}
private void scrollViewportToPixel(int x) {
scrollHandler.setViewportOrigin(x);
}
@Test
public void scrollViewportLeftByPage() throws Exception {
viewport.moveColumnPositionIntoViewport(3);
assertEquals(1, viewport.getColumnIndexByPosition(0));
viewport.moveColumnPositionIntoViewport(4);
assertEquals(2, viewport.getColumnIndexByPosition(0));
}
@Test
public void scrollViewportLeftByOffset() throws Exception {
// Origin adjusted
viewport.setOriginX(viewport.getStartXOfColumnPosition(2));
scrollViewportByOffset(-1);
assertEquals(1, viewport.getColumnIndexByPosition(0));
viewport.setOriginX(viewport.getStartXOfColumnPosition(1));
scrollViewportByOffset(-1);
assertEquals(0, viewport.getColumnIndexByPosition(0));
}
@Test
public void scrollViewportRightByOffset() throws Exception {
scrollViewportByOffset(200);
assertEquals(1, viewport.getColumnIndexByPosition(0));
scrollViewportByOffset(200);
assertEquals(2, viewport.getColumnIndexByPosition(0));
}
@Test
public void dragRight() throws Exception {
scrollViewportToPixel(300);
assertEquals(2, viewport.getColumnIndexByPosition(0));
assertEquals(3, viewport.getColumnIndexByPosition(1));
}
@Test
public void dragLeft() throws Exception {
// Origin adjusted
viewport.moveColumnPositionIntoViewport(3);
assertEquals(1, viewport.getColumnIndexByPosition(0));
scrollViewportToPixel(50);
assertEquals(0, viewport.getColumnIndexByPosition(0));
}
/**
* Test for issue reported in http://nattable.org/jira/browse/NTBL-99.
* Resizing the last column to be larger than the width of a table and
* scrolling to the right results in a all white background and no columns
*
* COLUMNS 0 1 |------|------| 250 250
*/
@Test
public void issueNTBL99MoveByColumn() throws Exception {
viewport = new ViewportLayerFixture(2, 1, 250, 40);
scrollHandler = new HorizontalScrollBarHandler(viewport, scrollBar);
assertEquals(200, viewport.getClientAreaWidth());
assertEquals(1, viewport.getColumnCount());
assertEquals(0, viewport.getColumnIndexByPosition(0));
scrollViewportByOffset(200);
assertEquals(0, viewport.getColumnIndexByPosition(0));
scrollViewportByOffset(200);
assertEquals(1, viewport.getColumnIndexByPosition(0));
// No more scrolling
scrollViewportByOffset(200);
assertEquals(1, viewport.getColumnIndexByPosition(0));
}
@Test
public void issueNTBL99MoveByPage() throws Exception {
viewport = new ViewportLayerFixture(2, 1, 250, 40);
scrollHandler = new HorizontalScrollBarHandler(viewport, scrollBar);
assertEquals(200, viewport.getClientAreaWidth());
assertEquals(1, viewport.getColumnCount());
assertEquals(0, viewport.getColumnIndexByPosition(0));
}
@Test
public void horizontalScrollbarThumbSize() throws Exception {
viewport = new ViewportLayerFixture(new Rectangle(0, 0, 250, 100));
scrollHandler = new HorizontalScrollBarHandler(viewport, scrollBar);
assertEquals(250, viewport.getWidth());
scrollHandler.recalculateScrollBarSize();
// Fixture data - viewport (250px), scrollable(465px)
assertEquals(250, scrollHandler.scroller.getThumb());
viewport.moveColumnPositionIntoViewport(9);
assertEquals(250, scrollHandler.scroller.getThumb());
}
@Test
public void horizontalScrollbarThumbSizeCalcNoScrollingNeeded()
throws Exception {
viewport = new ViewportLayerFixture(new Rectangle(0, 0, 500, 500));
scrollHandler = new HorizontalScrollBarHandler(viewport, scrollBar);
scrollHandler.recalculateScrollBarSize();
assertEquals(465, viewport.getWidth());
assertEquals(465, scrollHandler.scroller.getThumb());
assertFalse(scrollBar.isEnabled());
assertFalse(scrollBar.isVisible());
}
}