/*******************************************************************************
 * Copyright (c) 2008, 2014 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *      Remy Chi Jian Suen <remy.suen@gmail.com> - bug 137650
 *      Thibault Le Ouay <thibaultleouay@gmail.com> - Bug 443094
 *******************************************************************************/
package org.eclipse.e4.ui.tests.css.swt;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Shell;
import org.junit.Ignore;
import org.junit.Test;

public class ButtonTest extends CSSSWTTestCase {

	static final RGB RED = new RGB(255, 0, 0);
	static final RGB GREEN = new RGB(0, 255, 0);
	static final RGB BLUE = new RGB(0, 0, 255);

	protected Button createTestButton(String styleSheet) {
		engine = createEngine(styleSheet, display);

		// Create widgets
		Shell shell = new Shell(display, SWT.SHELL_TRIM);
		FillLayout layout = new FillLayout();
		shell.setLayout(layout);

		Composite panel = new Composite(shell, SWT.NONE);
		panel.setLayout(new FillLayout());

		Button buttonToTest = new Button(panel, SWT.CHECK);
		buttonToTest.setText("Some button text");

		// Apply styles
		engine.applyStyles(shell, true);

		shell.pack();
		return buttonToTest;
	}

	protected Button createTestArrowButton(String styleSheet) {
		engine = createEngine(styleSheet, display);

		// Create widgets
		Shell shell = new Shell(display, SWT.SHELL_TRIM);
		FillLayout layout = new FillLayout();
		shell.setLayout(layout);

		Composite panel = new Composite(shell, SWT.NONE);
		panel.setLayout(new FillLayout());

		Button buttonToTest = new Button(panel, SWT.ARROW);

		// Apply styles
		engine.applyStyles(shell, true);

		shell.pack();
		return buttonToTest;
	}

	@Test
	public void testColor() {
		Button buttonToTest = createTestButton("Button { background-color: #FF0000; color: #0000FF }");
		assertEquals(RED, buttonToTest.getBackground().getRGB());
		assertEquals(BLUE, buttonToTest.getForeground().getRGB());
	}

	@Test
	public void testFontRegular() {
		Button buttonToTest = createTestButton("Button { font: Verdana 16px }");
		assertEquals(1, buttonToTest.getFont().getFontData().length);
		FontData fontData = buttonToTest.getFont().getFontData()[0];
		assertEquals("Verdana", fontData.getName());
		assertEquals(16, fontData.getHeight());
		assertEquals(SWT.NORMAL, fontData.getStyle());
	}

	@Test
	public void testFontBold() {
		Button buttonToTest = createTestButton("Button { font: Arial 12px; font-weight: bold }");
		assertEquals(1, buttonToTest.getFont().getFontData().length);
		FontData fontData = buttonToTest.getFont().getFontData()[0];
		assertEquals("Arial", fontData.getName());
		assertEquals(12, fontData.getHeight());
		assertEquals(SWT.BOLD, fontData.getStyle());
	}

	@Test
	public void testFontItalic() {
		Button buttonToTest = createTestButton("Button { font-style: italic }");
		assertEquals(1, buttonToTest.getFont().getFontData().length);
		FontData fontData = buttonToTest.getFont().getFontData()[0];
		assertEquals(SWT.ITALIC, fontData.getStyle());
	}

	@Ignore
	public void testSelectedPseudo() {
		Button buttonToTest = createTestButton("Button { color: #FF0000; }\n" + "Button:selected { color: #0000FF; }");
		assertEquals(RED, buttonToTest.getForeground().getRGB());
		buttonToTest.setSelection(true);
		engine.applyStyles(buttonToTest.getShell(), true);
		assertEquals(BLUE, buttonToTest.getForeground().getRGB());
	}

	@Test
	public void testAlignment() {
		Button buttonToTest = createTestButton("Button { swt-alignment: right; }");
		assertEquals(SWT.RIGHT, buttonToTest.getAlignment());

		buttonToTest = createTestButton("Button { swt-alignment: left; }");
		assertEquals(SWT.LEFT, buttonToTest.getAlignment());

		buttonToTest = createTestButton("Button { swt-alignment: center; }");
		assertEquals(SWT.CENTER, buttonToTest.getAlignment());
	}

	@Test
	public void testAlignment2() {
		Button buttonToTest = createTestButton("Button { swt-alignment: trail; }");
		assertEquals(SWT.TRAIL, buttonToTest.getAlignment());

		buttonToTest = createTestButton("Button { swt-alignment: lead; }");
		assertEquals(SWT.LEAD, buttonToTest.getAlignment());
	}

	@Test
	public void testArrowAlignment() {
		Button buttonToTest = createTestArrowButton("Button { swt-alignment: up; }");
		assertEquals(SWT.UP, buttonToTest.getAlignment());

		buttonToTest = createTestArrowButton("Button { swt-alignment: down; }");
		assertEquals(SWT.DOWN, buttonToTest.getAlignment());

		buttonToTest = createTestArrowButton("Button { swt-alignment: left; }");
		assertEquals(SWT.LEFT, buttonToTest.getAlignment());

		buttonToTest = createTestArrowButton("Button { swt-alignment: right; }");
		assertEquals(SWT.RIGHT, buttonToTest.getAlignment());
	}

	@Test
	public void ensurePseudoAttributeAllowsToSelectionPushButton() {
		Button buttonToTest = createTestButton("Button[style~='SWT.CHECK'] { background-color: #FF0000; color: #0000FF }");

		assertEquals(RED, buttonToTest.getBackground().getRGB());
		assertEquals(BLUE, buttonToTest.getForeground().getRGB());

		Button unStyledButton = createTestButton("Button[style~='SWT.PUSH'] { background-color: #FF0000; color: #0000FF }");

		assertNotEquals(RED, unStyledButton.getBackground().getRGB());
		assertNotEquals(BLUE, unStyledButton.getForeground().getRGB());

	}
}