package org.eclipse.wst.dtd.ui.tests.viewer;

import junit.framework.TestCase;

import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.ITextDoubleClickStrategy;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.reconciler.IReconciler;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.dtd.core.text.IDTDPartitions;
import org.eclipse.wst.dtd.ui.StructuredTextViewerConfigurationDTD;
import org.eclipse.wst.dtd.ui.tests.internal.Logger;
import org.eclipse.wst.sse.ui.internal.StructuredTextViewer;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;

public class TestViewerConfigurationDTD extends TestCase {

	private StructuredTextViewerConfigurationDTD fConfig = null;
	private boolean fDisplayExists = true;
	private StructuredTextViewer fViewer = null;
	private boolean isSetup = false;

	public TestViewerConfigurationDTD() {
		super("TestViewerConfigurationDTD");
	}

	protected void setUp() throws Exception {

		super.setUp();
		if (!this.isSetup) {
			setUpViewerConfiguration();
			this.isSetup = true;
		}
	}

	private void setUpViewerConfiguration() {

		if (Display.getCurrent() != null) {

			Shell shell = null;
			Composite parent = null;

			if (PlatformUI.isWorkbenchRunning()) {
				shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
			}
			else {
				shell = new Shell(Display.getCurrent());
			}
			parent = new Composite(shell, SWT.NONE);

			// dummy viewer
			fViewer = new StructuredTextViewer(parent, null, null, false, SWT.NONE);
			fConfig = new StructuredTextViewerConfigurationDTD();
		}
		else {
			fDisplayExists = false;
			Logger.log(Logger.INFO, "Remember, viewer configuration tests are not run because workbench is not open (normal on build machine)");
		}
	}

	/**
	 * Not necessary
	 */
	public void testGetAutoEditStrategies() {

		// probably no display
		if (!fDisplayExists)
			return;

		IAutoEditStrategy[] strategies = fConfig.getAutoEditStrategies(fViewer, IDTDPartitions.DTD_DEFAULT);
		assertNotNull(strategies);
		assertTrue("there are no auto edit strategies", strategies.length > 0);
	}

	public void testGetConfiguredContentTypes() {

		// probably no display
		if (!fDisplayExists)
			return;

		String[] configuredContentTypes = fConfig.getConfiguredContentTypes(fViewer);
		assertNotNull(configuredContentTypes);
		assertTrue("there are no configured content types", configuredContentTypes.length > 1);
	}

	/**
	 * Not necessary
	 */
	public void testGetContentAssistant() {

		// probably no display
		if (!fDisplayExists)
			return;

		IContentAssistant ca = fConfig.getContentAssistant(fViewer);
		assertNotNull("there is no content assistant", ca);
	}

	/**
	 * Not necessary
	 */
	public void testGetDoubleClickStrategy() {

		// probably no display
		if (!fDisplayExists)
			return;

		String[] contentTypes = fConfig.getConfiguredContentTypes(fViewer);
		for (int i = 0; i < contentTypes.length; i++) {
			ITextDoubleClickStrategy strategy = fConfig.getDoubleClickStrategy(fViewer, contentTypes[i]);
			if (strategy != null) {
				return;
			}
		}
		assertTrue("there are no configured double click strategies", false);
	}

	public void testGetLineStyleProviders() {
		// probably no display
		if(!fDisplayExists)
			return;
		
		String[] contentTypes = fConfig.getConfiguredContentTypes(fViewer);
		for (int i = 0; i < contentTypes.length; i++) {
			LineStyleProvider providers[] = fConfig.getLineStyleProviders(fViewer, contentTypes[i]);
			if(providers != null) {
				return;
			}
		}
		assertTrue("there are no configured line style providers", false);
	}

	/**
	 * Not necessary
	 */
	public void testGetReconciler() {

		// probably no display
		if (!fDisplayExists)
			return;

		IReconciler r = fConfig.getReconciler(fViewer);
		assertNotNull("Reconciler is null", r);
	}
}