org.eclipse.nebula.widgets.nattable.examples/src/org/eclipse/nebula/widgets/nattable/examples/runner/TabbedNatExampleRunner.java - gerrit/nattable/org.eclipse.nebula.widgets.nattable - Git at Google

 /*******************************************************************************
  * Copyright (c) 2012, 2020 Original authors and others.
  *
  * This program and the accompanying materials are made
  * available under the terms of the Eclipse Public License 2.0
  * which is available at https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     Original authors and others - initial API and implementation
  *     Dirk Fauth <dirk.fauth@googlemail.com> - extended width of tree
  ******************************************************************************/
 package org.eclipse.nebula.widgets.nattable.examples.runner;

 import java.io.IOException;
 import java.io.InputStream;
 import java.lang.reflect.Modifier;
 import java.util.HashMap;
 import java.util.Map;

 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.TreePath;
 import org.eclipse.jface.viewers.TreeSelection;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.nebula.widgets.nattable.examples.INatExample;
 import org.eclipse.nebula.widgets.nattable.util.GUIHelper;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.browser.Browser;
 import org.eclipse.swt.custom.CTabFolder;
 import org.eclipse.swt.custom.CTabItem;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Shell;

 public class TabbedNatExampleRunner {

     private static CTabFolder tabFolder;
     private static Map<INatExample, Control> exampleControlMap = new HashMap<>();
     private static Map<String, INatExample> examplePathMap = new HashMap<>();
     private static Link link;;

     public static void run(String... examplePaths)
             throws InstantiationException, IllegalAccessException, ClassNotFoundException {
         run(1000, 600, examplePaths);
     }

     public static void run(int shellWidth, int shellHeight, final String... examplePaths)
             throws InstantiationException, IllegalAccessException, ClassNotFoundException {
         // Setup
         final Display display = Display.getDefault();
         final Shell shell = new Shell(display, SWT.SHELL_TRIM);
         shell.setLayout(new GridLayout(2, false));
         shell.setSize(shellWidth, shellHeight);
         shell.setText("NatTable Examples Application");

         Image nebula16 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_16.png"));
         Image nebula32 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_32.png"));
         Image nebula64 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_64.png"));

         shell.setImages(new Image[] { nebula16, nebula32, nebula64 });

         // Nav tree
         final TreeViewer navTreeViewer = new TreeViewer(shell);
         GridData gridData = new GridData(GridData.FILL_VERTICAL);
         gridData.widthHint = 300;
         navTreeViewer.getControl().setLayoutData(gridData);
         final NavContentProvider contentProvider = new NavContentProvider();
         navTreeViewer.setContentProvider(contentProvider);
         navTreeViewer.setLabelProvider(new NavLabelProvider(contentProvider));
         navTreeViewer.setInput(examplePaths);
         navTreeViewer.addDoubleClickListener(new IDoubleClickListener() {

             @Override
             public void doubleClick(DoubleClickEvent event) {
                 TreeSelection selection = (TreeSelection) event.getSelection();
                 for (TreePath path : selection.getPaths()) {
                     // check for item - if node expand/collapse, if child open
                     if (contentProvider.hasChildren(path.getLastSegment()
                             .toString())) {
                         boolean expanded = navTreeViewer.getExpandedState(path);
                         navTreeViewer.setExpandedState(path, !expanded);
                     } else {
                         openExampleInTab(path.getLastSegment().toString());
                     }
                 }
             }

         });

         tabFolder = new CTabFolder(shell, SWT.BORDER);
         tabFolder.setLayoutData(new GridData(GridData.FILL_BOTH));

         shell.open();

         while (!shell.isDisposed()) {
             if (!display.readAndDispatch()) {
                 display.sleep();
             }
         }

         for (INatExample example : exampleControlMap.keySet()) {
             // Stop
             example.onStop();

             Control exampleControl = exampleControlMap.get(example);
             exampleControl.dispose();
         }

         tabFolder.dispose();

         shell.dispose();
         display.dispose();
     }

     @SuppressWarnings("unchecked")
     public static Class<? extends INatExample> getExampleClass(String examplePath) {
         String className = examplePath.replace('/', '.');
         try {
             Class<?> clazz = Class.forName(className);
             if (INatExample.class.isAssignableFrom(clazz)
                     && !Modifier.isAbstract(clazz.getModifiers())) {
                 return (Class<? extends INatExample>) clazz;
             }
         } catch (Exception e) {
             throw new RuntimeException(e);
         }

         return null;
     }

     public static INatExample getExample(String examplePath) {
         INatExample example = examplePathMap.get(examplePath);
         if (example == null) {
             String path = examplePath;
             if (examplePath.startsWith("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX)) {
                 path = examplePath.replace("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX, INatExample.BASE_PATH + "/");
             } else if (examplePath.startsWith("/" + INatExample.CLASSIC_EXAMPLES_PREFIX)) {
                 path = examplePath.replace("/" + INatExample.CLASSIC_EXAMPLES_PREFIX, INatExample.CLASSIC_BASE_PATH + "/");
             }

             if (path.startsWith("/"))
                 path = path.substring(1);

             Class<? extends INatExample> exampleClass = getExampleClass(path);
             if (exampleClass != null) {
                 try {
                     example = exampleClass.newInstance();
                     examplePathMap.put(examplePath, example);
                 } catch (Exception e) {
                     throw new RuntimeException(e);
                 }
             }
         }
         return example;
     }

     private static void openExampleInTab(final String examplePath) {
         final INatExample example = getExample(examplePath);
         if (example == null) {
             return;
         }

         final String exampleName = example.getName();
         final CTabItem tabItem = new CTabItem(tabFolder, SWT.CLOSE);
         tabItem.setText(exampleName);
         tabItem.addDisposeListener(new DisposeListener() {

             @Override
             public void widgetDisposed(DisposeEvent e) {
                 // Stop
                 example.onStop();

                 Control exampleControl = exampleControlMap.get(example);
                 if (exampleControl != null && !exampleControl.isDisposed()) {
                     exampleControl.dispose();
                 }

                 exampleControlMap.remove(example);
                 examplePathMap.remove(examplePath);
                 link.dispose();
             }
         });

         final Composite tabComposite = new Composite(tabFolder, SWT.NONE);
         tabComposite.setLayout(new GridLayout(1, false));

         // Create example control
         final Control exampleControl = example.createExampleControl(tabComposite);
         exampleControl.setLayoutData(new GridData(GridData.FILL_BOTH));
         exampleControlMap.put(example, exampleControl);

         // Description
         final String description = example.getDescription();
         if (description != null && description.length() > 0) {
             final Group descriptionGroup = new Group(tabComposite, SWT.NONE);
             descriptionGroup.setText("Description");
             descriptionGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
             descriptionGroup.setLayout(new FillLayout());

             final Label descriptionLabel = new Label(descriptionGroup, SWT.WRAP);
             descriptionLabel.setText(description);
         }

         link = new Link(tabComposite, SWT.NONE);
         link.setText("<a href=\"" + examplePath + "\">View source</a>");

         final SelectionAdapter linkSelectionListener = new SelectionAdapter() {
             @Override
             public void widgetSelected(SelectionEvent event) {
                 String path = event.text;
                 if (path.startsWith("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX)) {
                     path = path.replace("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX, INatExample.BASE_PATH + "/");
                 } else if (path.startsWith("/" + INatExample.CLASSIC_EXAMPLES_PREFIX)) {
                     path = path.replace("/" + INatExample.CLASSIC_EXAMPLES_PREFIX, INatExample.CLASSIC_BASE_PATH + "/");
                 }
                 String source = getResourceAsString(path + ".java");
                 if (source != null) {
                     viewSource(exampleName, source);
                 }
             }
         };
         link.addSelectionListener(linkSelectionListener);

         tabItem.setControl(tabComposite);

         // Start
         example.onStart();

         tabFolder.setSelection(tabItem);
     }

     private static String getResourceAsString(String resource) {
         try (InputStream inStream = TabbedNatExampleRunner.class.getResourceAsStream(resource)) {
             if (inStream != null) {
                 StringBuilder strBuf = new StringBuilder();
                 int i = -1;
                 while ((i = inStream.read()) != -1) {
                     strBuf.append((char) i);
                 }

                 return strBuf.toString();
             } else {
                 System.out.println("null stream for resource " + resource);
             }
         } catch (IOException e) {
             e.printStackTrace();
         }

         return null;
     }

     private static void viewSource(String title, String source) {
         Shell shell = new Shell(Display.getDefault());
         shell.setText(title);
         shell.setLayout(new FillLayout());

         Browser text = new Browser(shell, SWT.MULTI);
         text.setBackground(GUIHelper.COLOR_WHITE);
         text.setText("<pre>" + source + "</pre>");

         shell.open();
     }

 }
	/*******************************************************************************
	* Copyright (c) 2012, 2020 Original authors and others.
	*
	* This program and the accompanying materials are made
	* available under the terms of the Eclipse Public License 2.0
	* which is available at https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Original authors and others - initial API and implementation
	* Dirk Fauth <dirk.fauth@googlemail.com> - extended width of tree
	******************************************************************************/
	package org.eclipse.nebula.widgets.nattable.examples.runner;

	import java.io.IOException;
	import java.io.InputStream;
	import java.lang.reflect.Modifier;
	import java.util.HashMap;
	import java.util.Map;

	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.TreePath;
	import org.eclipse.jface.viewers.TreeSelection;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.nebula.widgets.nattable.examples.INatExample;
	import org.eclipse.nebula.widgets.nattable.util.GUIHelper;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.browser.Browser;
	import org.eclipse.swt.custom.CTabFolder;
	import org.eclipse.swt.custom.CTabItem;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.layout.FillLayout;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Link;
	import org.eclipse.swt.widgets.Shell;

	public class TabbedNatExampleRunner {

	private static CTabFolder tabFolder;
	private static Map<INatExample, Control> exampleControlMap = new HashMap<>();
	private static Map<String, INatExample> examplePathMap = new HashMap<>();
	private static Link link;;

	public static void run(String... examplePaths)
	throws InstantiationException, IllegalAccessException, ClassNotFoundException {
	run(1000, 600, examplePaths);
	}

	public static void run(int shellWidth, int shellHeight, final String... examplePaths)
	throws InstantiationException, IllegalAccessException, ClassNotFoundException {
	// Setup
	final Display display = Display.getDefault();
	final Shell shell = new Shell(display, SWT.SHELL_TRIM);
	shell.setLayout(new GridLayout(2, false));
	shell.setSize(shellWidth, shellHeight);
	shell.setText("NatTable Examples Application");

	Image nebula16 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_16.png"));
	Image nebula32 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_32.png"));
	Image nebula64 = new Image(display, TabbedNatExampleRunner.class.getResourceAsStream("nebula_logo_64.png"));

	shell.setImages(new Image[] { nebula16, nebula32, nebula64 });

	// Nav tree
	final TreeViewer navTreeViewer = new TreeViewer(shell);
	GridData gridData = new GridData(GridData.FILL_VERTICAL);
	gridData.widthHint = 300;
	navTreeViewer.getControl().setLayoutData(gridData);
	final NavContentProvider contentProvider = new NavContentProvider();
	navTreeViewer.setContentProvider(contentProvider);
	navTreeViewer.setLabelProvider(new NavLabelProvider(contentProvider));
	navTreeViewer.setInput(examplePaths);
	navTreeViewer.addDoubleClickListener(new IDoubleClickListener() {

	@Override
	public void doubleClick(DoubleClickEvent event) {
	TreeSelection selection = (TreeSelection) event.getSelection();
	for (TreePath path : selection.getPaths()) {
	// check for item - if node expand/collapse, if child open
	if (contentProvider.hasChildren(path.getLastSegment()
	.toString())) {
	boolean expanded = navTreeViewer.getExpandedState(path);
	navTreeViewer.setExpandedState(path, !expanded);
	} else {
	openExampleInTab(path.getLastSegment().toString());
	}
	}
	}

	});

	tabFolder = new CTabFolder(shell, SWT.BORDER);
	tabFolder.setLayoutData(new GridData(GridData.FILL_BOTH));

	shell.open();

	while (!shell.isDisposed()) {
	if (!display.readAndDispatch()) {
	display.sleep();
	}
	}

	for (INatExample example : exampleControlMap.keySet()) {
	// Stop
	example.onStop();

	Control exampleControl = exampleControlMap.get(example);
	exampleControl.dispose();
	}

	tabFolder.dispose();

	shell.dispose();
	display.dispose();
	}

	@SuppressWarnings("unchecked")
	public static Class<? extends INatExample> getExampleClass(String examplePath) {
	String className = examplePath.replace('/', '.');
	try {
	Class<?> clazz = Class.forName(className);
	if (INatExample.class.isAssignableFrom(clazz)
	&& !Modifier.isAbstract(clazz.getModifiers())) {
	return (Class<? extends INatExample>) clazz;
	}
	} catch (Exception e) {
	throw new RuntimeException(e);
	}

	return null;
	}

	public static INatExample getExample(String examplePath) {
	INatExample example = examplePathMap.get(examplePath);
	if (example == null) {
	String path = examplePath;
	if (examplePath.startsWith("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX)) {
	path = examplePath.replace("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX, INatExample.BASE_PATH + "/");
	} else if (examplePath.startsWith("/" + INatExample.CLASSIC_EXAMPLES_PREFIX)) {
	path = examplePath.replace("/" + INatExample.CLASSIC_EXAMPLES_PREFIX, INatExample.CLASSIC_BASE_PATH + "/");
	}

	if (path.startsWith("/"))
	path = path.substring(1);

	Class<? extends INatExample> exampleClass = getExampleClass(path);
	if (exampleClass != null) {
	try {
	example = exampleClass.newInstance();
	examplePathMap.put(examplePath, example);
	} catch (Exception e) {
	throw new RuntimeException(e);
	}
	}
	}
	return example;
	}

	private static void openExampleInTab(final String examplePath) {
	final INatExample example = getExample(examplePath);
	if (example == null) {
	return;
	}

	final String exampleName = example.getName();
	final CTabItem tabItem = new CTabItem(tabFolder, SWT.CLOSE);
	tabItem.setText(exampleName);
	tabItem.addDisposeListener(new DisposeListener() {

	@Override
	public void widgetDisposed(DisposeEvent e) {
	// Stop
	example.onStop();

	Control exampleControl = exampleControlMap.get(example);
	if (exampleControl != null && !exampleControl.isDisposed()) {
	exampleControl.dispose();
	}

	exampleControlMap.remove(example);
	examplePathMap.remove(examplePath);
	link.dispose();
	}
	});

	final Composite tabComposite = new Composite(tabFolder, SWT.NONE);
	tabComposite.setLayout(new GridLayout(1, false));

	// Create example control
	final Control exampleControl = example.createExampleControl(tabComposite);
	exampleControl.setLayoutData(new GridData(GridData.FILL_BOTH));
	exampleControlMap.put(example, exampleControl);

	// Description
	final String description = example.getDescription();
	if (description != null && description.length() > 0) {
	final Group descriptionGroup = new Group(tabComposite, SWT.NONE);
	descriptionGroup.setText("Description");
	descriptionGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	descriptionGroup.setLayout(new FillLayout());

	final Label descriptionLabel = new Label(descriptionGroup, SWT.WRAP);
	descriptionLabel.setText(description);
	}

	link = new Link(tabComposite, SWT.NONE);
	link.setText("<a href=\"" + examplePath + "\">View source</a>");

	final SelectionAdapter linkSelectionListener = new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent event) {
	String path = event.text;
	if (path.startsWith("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX)) {
	path = path.replace("/" + INatExample.TUTORIAL_EXAMPLES_PREFIX, INatExample.BASE_PATH + "/");
	} else if (path.startsWith("/" + INatExample.CLASSIC_EXAMPLES_PREFIX)) {
	path = path.replace("/" + INatExample.CLASSIC_EXAMPLES_PREFIX, INatExample.CLASSIC_BASE_PATH + "/");
	}
	String source = getResourceAsString(path + ".java");
	if (source != null) {
	viewSource(exampleName, source);
	}
	}
	};
	link.addSelectionListener(linkSelectionListener);

	tabItem.setControl(tabComposite);

	// Start
	example.onStart();

	tabFolder.setSelection(tabItem);
	}

	private static String getResourceAsString(String resource) {
	try (InputStream inStream = TabbedNatExampleRunner.class.getResourceAsStream(resource)) {
	if (inStream != null) {
	StringBuilder strBuf = new StringBuilder();
	int i = -1;
	while ((i = inStream.read()) != -1) {
	strBuf.append((char) i);
	}

	return strBuf.toString();
	} else {
	System.out.println("null stream for resource " + resource);
	}
	} catch (IOException e) {
	e.printStackTrace();
	}

	return null;
	}

	private static void viewSource(String title, String source) {
	Shell shell = new Shell(Display.getDefault());
	shell.setText(title);
	shell.setLayout(new FillLayout());

	Browser text = new Browser(shell, SWT.MULTI);
	text.setBackground(GUIHelper.COLOR_WHITE);
	text.setText("<pre>" + source + "</pre>");

	shell.open();
	}

	}