这两天在因工作上的要求，在学习使用StyledText,网上搜了些相关资料，但都不很全，其中八进制的
“实现内容助理(1. 自动完成) ”见http://www.cnblogs.com/bjzhanghao/archive/2007/09/28/908648.html
还是很有用的，还有增加重做，取消功能等，还有着色等，我这里综合了一下，自己写了一个测试类，实现了代码助理和着色，加了一个右键菜单，完成结果图如下：
代码如下：(utf - 8)
package study.plug.wang.popup.dialog;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Vector;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.StatusLineManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.TextViewer;
import org.eclipse.jface.text.contentassist.CompletionProposal;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.contentassist.IContextInformation;
import org.eclipse.jface.text.contentassist.IContextInformationValidator;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.custom.CTabFolder;
import org.eclipse.swt.custom.CTabItem;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyleRange;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.custom.VerifyKeyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.events.VerifyEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Point;
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.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
/**
* StyledText测试类
*
* @author
*
*/
public class TextStyledText extends ApplicationWindow {
private StyledText styledText;
private Action actionRun;
private SourceViewer sourceViewer_source;
private List<String> optionList = new ArrayList<String>();
/**
* Create the application window
*/
public TextStyledText() {
super(null);
createActions();
addToolBar(SWT.FLAT | SWT.WRAP);
addMenuBar();
addStatusLine();
}
/**
* Create contents of the application window
*
* @param parent
*/
@Override
protected Control createContents(Composite parent) {
Composite container = new Composite(parent, SWT.NONE);
container.setLayout(new FillLayout());
final SashForm sashForm = new SashForm(container, SWT.BORDER);
sashForm.setOrientation(SWT.VERTICAL);
sourceViewer_source = new SourceViewer(sashForm, null, SWT.V_SCROLL | SWT.BORDER);
sourceViewer_source.setDocument(new Document(""));
sourceViewer_source.setEditable(true);
final CTabFolder tabFolder = new CTabFolder(sashForm, SWT.NONE);
final CTabItem tabItem = new CTabItem(tabFolder, SWT.NONE);
tabItem.setText("结果");
final Composite composite = new Composite(tabFolder, SWT.NONE);
composite.setLayout(new GridLayout());
tabItem.setControl(composite);
final TextViewer textViewer_trage = new TextViewer(composite, SWT.BORDER);
styledText = textViewer_trage.getTextWidget();
styledText.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
sashForm.setWeights(new int[] { 1, 1 });
//
initData();
initListener();
return container;
}
private void initData() {
String[] options = new String[] { "From", "To", "Table", "order" };
Arrays.sort(options);// 排序一下
for (String option : options) {
optionList.add(option.toLowerCase());
}
/*
* 自动完成功能一般在以下两种条件下弹出一个小窗口向用户提示当前可供选择的选项，一是用户按下指定的组合键时，二是用户输入了特定的字符时， SourceViewer支持这两种触发方式。在程序里使用SourceViewer和使用一般控件没有很大的分别，只是SourceViewer
* 是StyledText的包装，所以一些操作要通过getTextWidget()完成，如下所示：
*/
// Configure source viewer, add content assistant support
sourceViewer_source.configure(new SourceViewerConfiguration() {
@Override
public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
ContentAssistant assistant = new ContentAssistant();
IContentAssistProcessor cap = new MyContentAssistProcessor();
assistant.setContentAssistProcessor(cap, IDocument.DEFAULT_CONTENT_TYPE);
assistant.setInformationControlCreator(getInformationControlCreator(sourceViewer));
assistant.enableAutoActivation(true);
return assistant;
}
});
}
private void initListener() {
sourceViewer_source.appendVerifyKeyListener(new VerifyKeyListener() {
public void verifyKey(VerifyEvent event) {
// Check for Alt+/
if (event.stateMask == SWT.ALT && event.character == '/') {
// Check if source viewer is able to perform operation
if (sourceViewer_source.canDoOperation(SourceViewer.CONTENTASSIST_PROPOSALS))
// Perform operation
sourceViewer_source.doOperation(SourceViewer.CONTENTASSIST_PROPOSALS);
// Veto this key press to avoid further processing
event.doit = false;
} else if (event.character == ' ') {// 输入空格后着色
String text = sourceViewer_source.getTextWidget().getText();
if (text.length() > 0) {
//text = text.substring(text.length() - 1);
int p = text.lastIndexOf(" ");
String rengText = text;
if (p != -1) {
rengText = text.substring(p + 1);
p = p+1;
}else{
p = 0;
}
if (rengText.length() > 0 && optionList.contains(rengText.toLowerCase())) {
Color red = Display.getDefault().getSystemColor(SWT.COLOR_RED);
StyleRange sr = new StyleRange(p, rengText.length(), red, null);
sourceViewer_source.getTextWidget().setStyleRange(sr);
}
}
}
}
});
Menu menu = new Menu(sourceViewer_source.getTextWidget());
MenuItem menuItem = new MenuItem(menu, SWT.PUSH);
menuItem.setText("执行");
menuItem.addSelectionListener(new SelectionListener() {
public void widgetDefaultSelected(SelectionEvent e) {
}
public void widgetSelected(SelectionEvent e) {
runAction();
}
});
sourceViewer_source.getTextWidget().setMenu(menu);
}
private void runAction() {
MessageDialog.openInformation(getShell(), "信息", "还没有做呢，在这增加自己的功能");
}
/**
* Create the actions
*/
private void createActions() {
actionRun = new Action("执行") {
public void run() {
runAction();
}
};
// Create the actions
}
/**
* Create the toolbar manager
*
* @return the toolbar manager
*/
@Override
protected ToolBarManager createToolBarManager(int style) {
ToolBarManager toolBarManager = new ToolBarManager(style);
toolBarManager.add(actionRun);
return toolBarManager;
}
/**
* Create the status line manager
*
* @return the status line manager
*/
@Override
protected StatusLineManager createStatusLineManager() {
StatusLineManager statusLineManager = new StatusLineManager();
statusLineManager.setMessage(null, "");
return statusLineManager;
}
/**
* Launch the application
*
* @param args
*/
public static void main(String args[]) {
try {
TextStyledText window = new TextStyledText();
window.setBlockOnOpen(true);
window.open();
Display.getCurrent().dispose();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Configure the shell
*
* @param newShell
*/
@Override
protected void configureShell(Shell newShell) {
super.configureShell(newShell);
newShell.setText("Text StyledText ");
}
/**
* Return the initial size of the window
*/
@Override
protected Point getInitialSize() {
return new Point(500, 375);
}
/**
* 结果数组将作为弹出提示窗口里的选项
*
* @author 王林海
*
*/
class MyContentAssistProcessor implements IContentAssistProcessor {
public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer, int offset) {
try {
String text = viewer.getTextWidget().getText();
String[] options = optionList.toArray(new String[optionList.size()]);
if (text != null && text.length() > 0) {
int p = text.lastIndexOf(" ");
if (p != -1) {
text = text.substring(p + 1);
}
List<String> s = new ArrayList<String>();
HashMap<String, String> h = new HashMap<String, String>();
Vector<String> v = new Vector<String>(1);
for (String option : options) {
if (text.length() < option.length() && option.substring(0, text.length()).equalsIgnoreCase(text)) {
// v.add(option.substring(text.length()));
v.add(option);
}
}
if (v.size() > 0) {
options = v.toArray(new String[v.size()]);
} else {
return null;
}
}
// Dynamically generate proposal
ArrayList result = new ArrayList();
for (int i = 0; i < options.length; i++) {
// int len = options[i].length() - text.length();
CompletionProposal proposal = new CompletionProposal(options[i], offset - text.length(), text.length(), options[i].length());
result.add(proposal);
}
return (ICompletionProposal[]) result.toArray(new ICompletionProposal[result.size()]);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public char[] getCompletionProposalAutoActivationCharacters() {
return new char[] { 46 };// 点"."
}
public IContextInformation[] computeContextInformation(ITextViewer viewer, int offset) {
return null;
}
public char[] getContextInformationAutoActivationCharacters() {
return null;
}
public IContextInformationValidator getContextInformationValidator() {
return null;
}
public String getErrorMessage() {
return null;
}
}
}