examples/org.eclipse.jface.snippets/Eclipse JFace Snippets/org/eclipse/jface/snippets/viewers/Snippet050DelegatingStyledCellLabelProvider.java - platform/eclipse.platform.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2008 IBM Corporation 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:
  *     IBM Corporation - initial API and implementation
  *     Michael Krkoska - initial API and implementation (bug 188333)
  *******************************************************************************/
 package org.eclipse.jface.snippets.viewers;

 import java.io.File;
 import java.text.DateFormat;
 import java.text.MessageFormat;
 import java.util.Date;

 import org.eclipse.jface.preference.JFacePreferences;
 import org.eclipse.jface.resource.JFaceResources;
 import org.eclipse.jface.viewers.*;
 import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.graphics.RGB;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;


 /**
  * Using a {@link DelegatingStyledCellLabelProvider} on tree viewer with multiple columns. Compare the result with a native tree viewer.
  */
 public class Snippet050DelegatingStyledCellLabelProvider {


 	private static final int SHELL_WIDTH= 640;
 	private static final Display DISPLAY= Display.getDefault();


 	public static void main(String[] args) {

 		JFaceResources.getColorRegistry().put(JFacePreferences.COUNTER_COLOR, new RGB(0,127,174));


 		Shell shell= new Shell(DISPLAY, SWT.CLOSE | SWT.RESIZE);
 		shell.setSize(SHELL_WIDTH, 300);
 		shell.setLayout(new GridLayout(1, false));

 		Snippet050DelegatingStyledCellLabelProvider example= new Snippet050DelegatingStyledCellLabelProvider();
 		example.createPartControl(shell);

 		shell.open();

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

 	public Snippet050DelegatingStyledCellLabelProvider() {
 	}

 	public void createPartControl(Composite parent) {
 		Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 		composite.setLayout(new GridLayout(2, true));

 		final DelegatingStyledCellLabelProvider styledCellLP1= new DelegatingStyledCellLabelProvider(new NameAndSizeLabelProvider());
 		final DelegatingStyledCellLabelProvider styledCellLP2= new DelegatingStyledCellLabelProvider(new ModifiedDateLabelProvider());
 		final ColumnViewer ownerDrawViewer= createViewer("Owner draw viewer:", composite, styledCellLP1, styledCellLP2); //$NON-NLS-1$

 		CellLabelProvider normalLP1= new NameAndSizeLabelProvider();
 		CellLabelProvider normalLP2= new ModifiedDateLabelProvider();
 		final ColumnViewer normalViewer= createViewer("Normal viewer:", composite, normalLP1, normalLP2); //$NON-NLS-1$

 		Composite buttons= new Composite(parent, SWT.NONE);
 		buttons.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
 		buttons.setLayout(new GridLayout(3, false));


 		Button button1= new Button(buttons, SWT.PUSH);
 		button1.setText("Refresh Viewers"); //$NON-NLS-1$
 		button1.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				ownerDrawViewer.refresh();
 				normalViewer.refresh();
 			}
 		});

 		final Button button2= new Button(buttons, SWT.CHECK);
 		button2.setText("Owner draw on column 1"); //$NON-NLS-1$
 		button2.setSelection(true);
 		button2.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				boolean newState= button2.getSelection();
 				styledCellLP1.setOwnerDrawEnabled(newState);
 				ownerDrawViewer.refresh();
 			}
 		});

 		final Button button3= new Button(buttons, SWT.CHECK);
 		button3.setText("Owner draw on column 2"); //$NON-NLS-1$
 		button3.setSelection(true);
 		button3.addSelectionListener(new SelectionAdapter() {

 			public void widgetSelected(SelectionEvent e) {
 				boolean newState= button3.getSelection();
 				styledCellLP2.setOwnerDrawEnabled(newState);
 				ownerDrawViewer.refresh();
 			}
 		});
 	}

 	private static class FileSystemRoot {
 		public File[] getRoots() {
 			return File.listRoots();
 		}
 	}

 	private ColumnViewer createViewer(String description, Composite parent, CellLabelProvider labelProvider1, CellLabelProvider labelProvider2) {

 		Composite composite= new Composite(parent, SWT.NONE);
 		composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
 		composite.setLayout(new GridLayout(1, true));

 		Label label= new Label(composite, SWT.NONE);
 		label.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
 		label.setText(description);

 		TreeViewer treeViewer= new TreeViewer(composite, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
 		treeViewer.getTree().setHeaderVisible(true);
 		treeViewer.setContentProvider(new FileSystemContentProvider());

 		TreeViewerColumn tvc1 = new TreeViewerColumn(treeViewer, SWT.NONE);
 		tvc1.getColumn().setText("Name"); //$NON-NLS-1$
 		tvc1.getColumn().setWidth(200);
 		tvc1.setLabelProvider(labelProvider1);

 		TreeViewerColumn tvc2 = new TreeViewerColumn(treeViewer, SWT.NONE);
 		tvc2.getColumn().setText("Date Modified"); //$NON-NLS-1$
 		tvc2.getColumn().setWidth(200);
 		tvc2.setLabelProvider(labelProvider2);

 		GridData data= new GridData(GridData.FILL, GridData.FILL, true, true);
 		treeViewer.getControl().setLayoutData(data);

 		treeViewer.setInput(new FileSystemRoot());

 		return treeViewer;
 	}

 	/**
 	 * A simple label provider
 	 */
 	private static class NameAndSizeLabelProvider extends ColumnLabelProvider implements IStyledLabelProvider {

 		private static int IMAGE_SIZE= 16;
 		private static final Image IMAGE1= new Image(DISPLAY, DISPLAY.getSystemImage(SWT.ICON_WARNING).getImageData().scaledTo(IMAGE_SIZE, IMAGE_SIZE));
 		private static final Image IMAGE2= new Image(DISPLAY, DISPLAY.getSystemImage(SWT.ICON_ERROR).getImageData().scaledTo(IMAGE_SIZE, IMAGE_SIZE));

 		public Image getImage(Object element) {
 			if (element instanceof File) {
 				File file= (File) element;
 				if (file.isDirectory()) {
 					return IMAGE1;
 				} else {
 					return IMAGE2;
 				}
 			}
 			return null;
 		}

 		public String getText(Object element) {
 			return getStyledText(element).toString();
 		}

 		public StyledString getStyledText(Object element) {
 			StyledString styledString= new StyledString();
 			if (element instanceof File) {
 				File file= (File) element;
 				if (file.getName().length() == 0) {
 					styledString.append(file.getAbsolutePath());
 				} else {
 					styledString.append(file.getName());
 				}
 				if (file.isFile()) {
 					String decoration= MessageFormat.format(" ({0} bytes)", new Object[] { new Long(file.length()) }); //$NON-NLS-1$
 					styledString.append(decoration, StyledString.COUNTER_STYLER);
 				}
 			}
 			return styledString;
 		}
 	}

 	private static class ModifiedDateLabelProvider extends ColumnLabelProvider implements IStyledLabelProvider {
 		public String getText(Object element) {
 			return getStyledText(element).toString();
 		}

 		public StyledString getStyledText(Object element) {
 			StyledString styledString= new StyledString();
 			if (element instanceof File) {
 				File file= (File) element;

 				String date= DateFormat.getDateInstance().format(new Date(file.lastModified()));
 				styledString.append(date);

 				styledString.append(' ');

 				String time = DateFormat.getTimeInstance(3).format(new Date(file.lastModified()));
 				styledString.append(time, StyledString.COUNTER_STYLER);
 			}
 			return styledString;
 		}
 	}

 	private static class FileSystemContentProvider implements ITreeContentProvider {

 		public Object[] getChildren(Object element) {
 			if (element instanceof File) {
 				File file= (File) element;
 				if (file.isDirectory()) {
 					File[] listFiles= file.listFiles();
 					if (listFiles != null) {
 						return listFiles;
 					}
 				}
 			} else if (element instanceof FileSystemRoot) {
 				return ((FileSystemRoot) element).getRoots();
 			}
 			return new Object[0];
 		}

 		public Object getParent(Object element) {
 			if (element instanceof File) {
 				File file= (File) element;
 				return file.getParentFile();
 			}
 			return null;
 		}

 		public boolean hasChildren(Object element) {
 			return getChildren(element).length > 0;
 		}

 		public Object[] getElements(Object inputElement) {
 			return getChildren(inputElement);
 		}

 		public void dispose() {
 		}

 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 2008 IBM Corporation 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:
	* IBM Corporation - initial API and implementation
	* Michael Krkoska - initial API and implementation (bug 188333)
	*******************************************************************************/
	package org.eclipse.jface.snippets.viewers;

	import java.io.File;
	import java.text.DateFormat;
	import java.text.MessageFormat;
	import java.util.Date;

	import org.eclipse.jface.preference.JFacePreferences;
	import org.eclipse.jface.resource.JFaceResources;
	import org.eclipse.jface.viewers.*;
	import org.eclipse.jface.viewers.DelegatingStyledCellLabelProvider.IStyledLabelProvider;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.graphics.RGB;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;


	/**
	* Using a {@link DelegatingStyledCellLabelProvider} on tree viewer with multiple columns. Compare the result with a native tree viewer.
	*/
	public class Snippet050DelegatingStyledCellLabelProvider {


	private static final int SHELL_WIDTH= 640;
	private static final Display DISPLAY= Display.getDefault();


	public static void main(String[] args) {

	JFaceResources.getColorRegistry().put(JFacePreferences.COUNTER_COLOR, new RGB(0,127,174));



	Shell shell= new Shell(DISPLAY, SWT.CLOSE \| SWT.RESIZE);
	shell.setSize(SHELL_WIDTH, 300);
	shell.setLayout(new GridLayout(1, false));

	Snippet050DelegatingStyledCellLabelProvider example= new Snippet050DelegatingStyledCellLabelProvider();
	example.createPartControl(shell);

	shell.open();

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

	public Snippet050DelegatingStyledCellLabelProvider() {
	}

	public void createPartControl(Composite parent) {
	Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
	composite.setLayout(new GridLayout(2, true));

	final DelegatingStyledCellLabelProvider styledCellLP1= new DelegatingStyledCellLabelProvider(new NameAndSizeLabelProvider());
	final DelegatingStyledCellLabelProvider styledCellLP2= new DelegatingStyledCellLabelProvider(new ModifiedDateLabelProvider());
	final ColumnViewer ownerDrawViewer= createViewer("Owner draw viewer:", composite, styledCellLP1, styledCellLP2); //$NON-NLS-1$

	CellLabelProvider normalLP1= new NameAndSizeLabelProvider();
	CellLabelProvider normalLP2= new ModifiedDateLabelProvider();
	final ColumnViewer normalViewer= createViewer("Normal viewer:", composite, normalLP1, normalLP2); //$NON-NLS-1$

	Composite buttons= new Composite(parent, SWT.NONE);
	buttons.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
	buttons.setLayout(new GridLayout(3, false));


	Button button1= new Button(buttons, SWT.PUSH);
	button1.setText("Refresh Viewers"); //$NON-NLS-1$
	button1.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	ownerDrawViewer.refresh();
	normalViewer.refresh();
	}
	});

	final Button button2= new Button(buttons, SWT.CHECK);
	button2.setText("Owner draw on column 1"); //$NON-NLS-1$
	button2.setSelection(true);
	button2.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	boolean newState= button2.getSelection();
	styledCellLP1.setOwnerDrawEnabled(newState);
	ownerDrawViewer.refresh();
	}
	});

	final Button button3= new Button(buttons, SWT.CHECK);
	button3.setText("Owner draw on column 2"); //$NON-NLS-1$
	button3.setSelection(true);
	button3.addSelectionListener(new SelectionAdapter() {

	public void widgetSelected(SelectionEvent e) {
	boolean newState= button3.getSelection();
	styledCellLP2.setOwnerDrawEnabled(newState);
	ownerDrawViewer.refresh();
	}
	});
	}

	private static class FileSystemRoot {
	public File[] getRoots() {
	return File.listRoots();
	}
	}

	private ColumnViewer createViewer(String description, Composite parent, CellLabelProvider labelProvider1, CellLabelProvider labelProvider2) {

	Composite composite= new Composite(parent, SWT.NONE);
	composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
	composite.setLayout(new GridLayout(1, true));

	Label label= new Label(composite, SWT.NONE);
	label.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
	label.setText(description);

	TreeViewer treeViewer= new TreeViewer(composite, SWT.MULTI \| SWT.H_SCROLL \| SWT.V_SCROLL);
	treeViewer.getTree().setHeaderVisible(true);
	treeViewer.setContentProvider(new FileSystemContentProvider());

	TreeViewerColumn tvc1 = new TreeViewerColumn(treeViewer, SWT.NONE);
	tvc1.getColumn().setText("Name"); //$NON-NLS-1$
	tvc1.getColumn().setWidth(200);
	tvc1.setLabelProvider(labelProvider1);

	TreeViewerColumn tvc2 = new TreeViewerColumn(treeViewer, SWT.NONE);
	tvc2.getColumn().setText("Date Modified"); //$NON-NLS-1$
	tvc2.getColumn().setWidth(200);
	tvc2.setLabelProvider(labelProvider2);

	GridData data= new GridData(GridData.FILL, GridData.FILL, true, true);
	treeViewer.getControl().setLayoutData(data);

	treeViewer.setInput(new FileSystemRoot());

	return treeViewer;
	}

	/**
	* A simple label provider
	*/
	private static class NameAndSizeLabelProvider extends ColumnLabelProvider implements IStyledLabelProvider {

	private static int IMAGE_SIZE= 16;
	private static final Image IMAGE1= new Image(DISPLAY, DISPLAY.getSystemImage(SWT.ICON_WARNING).getImageData().scaledTo(IMAGE_SIZE, IMAGE_SIZE));
	private static final Image IMAGE2= new Image(DISPLAY, DISPLAY.getSystemImage(SWT.ICON_ERROR).getImageData().scaledTo(IMAGE_SIZE, IMAGE_SIZE));

	public Image getImage(Object element) {
	if (element instanceof File) {
	File file= (File) element;
	if (file.isDirectory()) {
	return IMAGE1;
	} else {
	return IMAGE2;
	}
	}
	return null;
	}

	public String getText(Object element) {
	return getStyledText(element).toString();
	}

	public StyledString getStyledText(Object element) {
	StyledString styledString= new StyledString();
	if (element instanceof File) {
	File file= (File) element;
	if (file.getName().length() == 0) {
	styledString.append(file.getAbsolutePath());
	} else {
	styledString.append(file.getName());
	}
	if (file.isFile()) {
	String decoration= MessageFormat.format(" ({0} bytes)", new Object[] { new Long(file.length()) }); //$NON-NLS-1$
	styledString.append(decoration, StyledString.COUNTER_STYLER);
	}
	}
	return styledString;
	}
	}

	private static class ModifiedDateLabelProvider extends ColumnLabelProvider implements IStyledLabelProvider {
	public String getText(Object element) {
	return getStyledText(element).toString();
	}

	public StyledString getStyledText(Object element) {
	StyledString styledString= new StyledString();
	if (element instanceof File) {
	File file= (File) element;

	String date= DateFormat.getDateInstance().format(new Date(file.lastModified()));
	styledString.append(date);

	styledString.append(' ');

	String time = DateFormat.getTimeInstance(3).format(new Date(file.lastModified()));
	styledString.append(time, StyledString.COUNTER_STYLER);
	}
	return styledString;
	}
	}

	private static class FileSystemContentProvider implements ITreeContentProvider {

	public Object[] getChildren(Object element) {
	if (element instanceof File) {
	File file= (File) element;
	if (file.isDirectory()) {
	File[] listFiles= file.listFiles();
	if (listFiles != null) {
	return listFiles;
	}
	}
	} else if (element instanceof FileSystemRoot) {
	return ((FileSystemRoot) element).getRoots();
	}
	return new Object[0];
	}

	public Object getParent(Object element) {
	if (element instanceof File) {
	File file= (File) element;
	return file.getParentFile();
	}
	return null;
	}

	public boolean hasChildren(Object element) {
	return getChildren(element).length > 0;
	}

	public Object[] getElements(Object inputElement) {
	return getChildren(inputElement);
	}

	public void dispose() {
	}

	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	}
	}