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Java by API/org.eclipse.jface.viewers/TreeViewer - История изменений
2026-04-23T18:16:12Z
История изменений этой страницы в вики
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http://jexp.ru/index.php?title=Java_by_API/org.eclipse.jface.viewers/TreeViewer&diff=1065&oldid=prev
в 17:43, 31 мая 2010
2010-05-31T17:43:48Z
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<td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 17:43, 31 мая 2010</td>
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http://jexp.ru/index.php?title=Java_by_API/org.eclipse.jface.viewers/TreeViewer&diff=1066&oldid=prev
Admin: 1 версия
2010-05-31T14:23:25Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== TreeViewer: getTree() ==<br />
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<!-- start source code --><br />
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<source lang="java"><br />
import java.io.File;<br />
import java.io.FileInputStream;<br />
import java.io.FileNotFoundException;<br />
import java.util.ArrayList;<br />
import java.util.List;<br />
import org.eclipse.jface.viewers.ILabelProvider;<br />
import org.eclipse.jface.viewers.ILabelProviderListener;<br />
import org.eclipse.jface.viewers.ITreeContentProvider;<br />
import org.eclipse.jface.viewers.LabelProviderChangedEvent;<br />
import org.eclipse.jface.viewers.TreeViewer;<br />
import org.eclipse.jface.viewers.Viewer;<br />
import org.eclipse.jface.window.ApplicationWindow;<br />
import org.eclipse.swt.SWT;<br />
import org.eclipse.swt.events.SelectionAdapter;<br />
import org.eclipse.swt.events.SelectionEvent;<br />
import org.eclipse.swt.graphics.Image;<br />
import org.eclipse.swt.layout.GridData;<br />
import org.eclipse.swt.layout.GridLayout;<br />
import org.eclipse.swt.widgets.Button;<br />
import org.eclipse.swt.widgets.ruposite;<br />
import org.eclipse.swt.widgets.Control;<br />
import org.eclipse.swt.widgets.Display;<br />
import org.eclipse.swt.widgets.Shell;<br />
public class MainClass extends ApplicationWindow {<br />
public MainClass() {<br />
super(null);<br />
setBlockOnOpen(true);<br />
open();<br />
Display.getCurrent().dispose();<br />
}<br />
protected void configureShell(Shell shell) {<br />
super.configureShell(shell);<br />
shell.setText("File Tree");<br />
shell.setSize(400, 400);<br />
}<br />
protected Control createContents(Composite parent) {<br />
Composite composite = new Composite(parent, SWT.NONE);<br />
composite.setLayout(new GridLayout(1, false));<br />
Button preserveCase = new Button(composite, SWT.CHECK);<br />
preserveCase.setText("&Preserve case");<br />
final TreeViewer tv = new TreeViewer(composite);<br />
tv.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));<br />
tv.setContentProvider(new FileTreeContentProvider());<br />
tv.setLabelProvider(new FileTreeLabelProvider());<br />
tv.setInput("root");<br />
preserveCase.addSelectionListener(new SelectionAdapter() {<br />
public void widgetSelected(SelectionEvent event) {<br />
boolean preserveCase = ((Button) event.widget).getSelection();<br />
FileTreeLabelProvider ftlp = (FileTreeLabelProvider) tv.getLabelProvider();<br />
ftlp.setPreserveCase(preserveCase);<br />
}<br />
});<br />
return composite;<br />
}<br />
public static void main(String[] args) {<br />
new MainClass();<br />
}<br />
}<br />
class FileTreeLabelProvider implements ILabelProvider {<br />
private List listeners = new ArrayList();<br />
private Image file;<br />
private Image dir;<br />
boolean preserveCase;<br />
public FileTreeLabelProvider() {<br />
try {<br />
file = new Image(null, new FileInputStream("file.gif"));<br />
dir = new Image(null, new FileInputStream("directory.gif"));<br />
} catch (FileNotFoundException e) {<br />
}<br />
}<br />
public void setPreserveCase(boolean preserveCase) {<br />
this.preserveCase = preserveCase;<br />
LabelProviderChangedEvent event = new LabelProviderChangedEvent(this);<br />
for (int i = 0, n = listeners.size(); i < n; i++) {<br />
ILabelProviderListener ilpl = (ILabelProviderListener) listeners.get(i);<br />
ilpl.labelProviderChanged(event);<br />
}<br />
}<br />
public Image getImage(Object arg0) {<br />
return ((File) arg0).isDirectory() ? dir : file;<br />
}<br />
public String getText(Object arg0) {<br />
String text = ((File) arg0).getName();<br />
if (text.length() == 0) {<br />
text = ((File) arg0).getPath();<br />
}<br />
return preserveCase ? text : text.toUpperCase();<br />
}<br />
public void addListener(ILabelProviderListener arg0) {<br />
listeners.add(arg0);<br />
}<br />
public void dispose() {<br />
if (dir != null)<br />
dir.dispose();<br />
if (file != null)<br />
file.dispose();<br />
}<br />
public boolean isLabelProperty(Object arg0, String arg1) {<br />
return false;<br />
}<br />
public void removeListener(ILabelProviderListener arg0) {<br />
listeners.remove(arg0);<br />
}<br />
}<br />
class FileTreeContentProvider implements ITreeContentProvider {<br />
public Object[] getChildren(Object arg0) {<br />
return ((File) arg0).listFiles();<br />
}<br />
public Object getParent(Object arg0) {<br />
return ((File) arg0).getParentFile();<br />
}<br />
public boolean hasChildren(Object arg0) {<br />
Object[] obj = getChildren(arg0);<br />
return obj == null ? false : obj.length > 0;<br />
}<br />
public Object[] getElements(Object arg0) {<br />
return File.listRoots();<br />
}<br />
public void dispose() {<br />
}<br />
public void inputChanged(Viewer arg0, Object arg1, Object arg2) {<br />
}<br />
}<br />
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</source><br />
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<!-- end source code --><br />
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== TreeViewer: setContentProvider(IContentProvider arg0) ==<br />
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<!-- start source code --><br />
<br />
<source lang="java"><br />
import java.io.File;<br />
import java.io.FileInputStream;<br />
import java.io.FileNotFoundException;<br />
import java.util.ArrayList;<br />
import java.util.List;<br />
import org.eclipse.jface.viewers.ILabelProvider;<br />
import org.eclipse.jface.viewers.ILabelProviderListener;<br />
import org.eclipse.jface.viewers.ITreeContentProvider;<br />
import org.eclipse.jface.viewers.LabelProviderChangedEvent;<br />
import org.eclipse.jface.viewers.TreeViewer;<br />
import org.eclipse.jface.viewers.Viewer;<br />
import org.eclipse.jface.window.ApplicationWindow;<br />
import org.eclipse.swt.SWT;<br />
import org.eclipse.swt.events.SelectionAdapter;<br />
import org.eclipse.swt.events.SelectionEvent;<br />
import org.eclipse.swt.graphics.Image;<br />
import org.eclipse.swt.layout.GridData;<br />
import org.eclipse.swt.layout.GridLayout;<br />
import org.eclipse.swt.widgets.Button;<br />
import org.eclipse.swt.widgets.ruposite;<br />
import org.eclipse.swt.widgets.Control;<br />
import org.eclipse.swt.widgets.Display;<br />
import org.eclipse.swt.widgets.Shell;<br />
public class MainClass extends ApplicationWindow {<br />
public MainClass() {<br />
super(null);<br />
setBlockOnOpen(true);<br />
open();<br />
Display.getCurrent().dispose();<br />
}<br />
protected void configureShell(Shell shell) {<br />
super.configureShell(shell);<br />
shell.setText("File Tree");<br />
shell.setSize(400, 400);<br />
}<br />
protected Control createContents(Composite parent) {<br />
Composite composite = new Composite(parent, SWT.NONE);<br />
composite.setLayout(new GridLayout(1, false));<br />
Button preserveCase = new Button(composite, SWT.CHECK);<br />
preserveCase.setText("&Preserve case");<br />
final TreeViewer tv = new TreeViewer(composite);<br />
tv.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));<br />
tv.setContentProvider(new FileTreeContentProvider());<br />
tv.setLabelProvider(new FileTreeLabelProvider());<br />
tv.setInput("root");<br />
preserveCase.addSelectionListener(new SelectionAdapter() {<br />
public void widgetSelected(SelectionEvent event) {<br />
boolean preserveCase = ((Button) event.widget).getSelection();<br />
FileTreeLabelProvider ftlp = (FileTreeLabelProvider) tv.getLabelProvider();<br />
ftlp.setPreserveCase(preserveCase);<br />
}<br />
});<br />
return composite;<br />
}<br />
public static void main(String[] args) {<br />
new MainClass();<br />
}<br />
}<br />
class FileTreeLabelProvider implements ILabelProvider {<br />
private List listeners = new ArrayList();<br />
private Image file;<br />
private Image dir;<br />
boolean preserveCase;<br />
public FileTreeLabelProvider() {<br />
try {<br />
file = new Image(null, new FileInputStream("file.gif"));<br />
dir = new Image(null, new FileInputStream("directory.gif"));<br />
} catch (FileNotFoundException e) {<br />
}<br />
}<br />
public void setPreserveCase(boolean preserveCase) {<br />
this.preserveCase = preserveCase;<br />
LabelProviderChangedEvent event = new LabelProviderChangedEvent(this);<br />
for (int i = 0, n = listeners.size(); i < n; i++) {<br />
ILabelProviderListener ilpl = (ILabelProviderListener) listeners.get(i);<br />
ilpl.labelProviderChanged(event);<br />
}<br />
}<br />
public Image getImage(Object arg0) {<br />
return ((File) arg0).isDirectory() ? dir : file;<br />
}<br />
public String getText(Object arg0) {<br />
String text = ((File) arg0).getName();<br />
if (text.length() == 0) {<br />
text = ((File) arg0).getPath();<br />
}<br />
return preserveCase ? text : text.toUpperCase();<br />
}<br />
public void addListener(ILabelProviderListener arg0) {<br />
listeners.add(arg0);<br />
}<br />
public void dispose() {<br />
if (dir != null)<br />
dir.dispose();<br />
if (file != null)<br />
file.dispose();<br />
}<br />
public boolean isLabelProperty(Object arg0, String arg1) {<br />
return false;<br />
}<br />
public void removeListener(ILabelProviderListener arg0) {<br />
listeners.remove(arg0);<br />
}<br />
}<br />
class FileTreeContentProvider implements ITreeContentProvider {<br />
public Object[] getChildren(Object arg0) {<br />
return ((File) arg0).listFiles();<br />
}<br />
public Object getParent(Object arg0) {<br />
return ((File) arg0).getParentFile();<br />
}<br />
public boolean hasChildren(Object arg0) {<br />
Object[] obj = getChildren(arg0);<br />
return obj == null ? false : obj.length > 0;<br />
}<br />
public Object[] getElements(Object arg0) {<br />
return File.listRoots();<br />
}<br />
public void dispose() {<br />
}<br />
public void inputChanged(Viewer arg0, Object arg1, Object arg2) {<br />
}<br />
}<br />
<br />
</source><br />
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<!-- end source code --></div>
Admin