Java JTextArea.getCaret方法代码示例

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void actionPerformed(ActionEvent e) {
    JTextArea currentEditor = observer.getActiveEditor().getEditor();
    Document document = currentEditor.getDocument();
    Caret position = currentEditor.getCaret();

    int len = Math.abs(currentEditor.getCaret().getDot()
            - currentEditor.getCaret().getMark());
    int offset = Math.min(currentEditor.getCaret().getDot(), currentEditor
            .getCaret().getMark());

    try {
        String text = document.getText(offset, len);
        text = lowerCase(text);
        document.remove(offset, len);
        document.insertString(offset, text, null);
        // Reselect text
        position.setDot(offset);
        position.moveDot(offset + len);
        currentEditor.requestFocus();
    } catch (BadLocationException e1) {
        observer.errorMessage(e1);
    }
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void actionPerformed(ActionEvent e) {
    JTextArea currentEditor = observer.getActiveEditor().getEditor();
    Document document = currentEditor.getDocument();
    Caret position = currentEditor.getCaret();

    int len = Math.abs(currentEditor.getCaret().getDot()
            - currentEditor.getCaret().getMark());
    int offset = Math.min(currentEditor.getCaret().getDot(), currentEditor
            .getCaret().getMark());

    try {
        String text = document.getText(offset, len);
        text = upperCase(text);
        document.remove(offset, len);
        document.insertString(offset, text, null);
        position.setDot(offset);
        position.moveDot(offset + len);
        currentEditor.requestFocus();
    } catch (BadLocationException e1) {
        observer.errorMessage(e1);
    }
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
protected void assertAutoQuery(QueryType queryType, String source, String typedText) {
    CodeCompletionHandler completer = getCodeCompleter();
    int caretPos = source.indexOf('^');
    source = source.substring(0, caretPos) + source.substring(caretPos+1);

    BaseDocument doc = getDocument(source);
    JTextArea ta = new JTextArea(doc);
    Caret caret = ta.getCaret();
    caret.setDot(caretPos);

    QueryType qt = completer.getAutoQuery(ta, typedText);
    assertEquals(queryType, qt);
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
public Console() {
    setLayout(new BorderLayout());
    setBorder(new TitledBorder("控制台"));
    textarea = new JTextArea();
    textarea.setCaretPosition(textarea.getText().length());
    textarea.setFont(new Font("新宋体", Font.PLAIN, 12));
    add(textarea);
    DefaultCaret caret = (DefaultCaret) textarea.getCaret();
    caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
    scrollPane = new JScrollPane();
    scrollPane.setViewportView(textarea);
    add(scrollPane, BorderLayout.CENTER);
    
    welcome();
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void actionPerformed(ActionEvent e) {
    JTextArea currentEditor = observer.getActiveEditor().getEditor();
    Document document = currentEditor.getDocument();
    Caret caret = currentEditor.getCaret();

    int startCaret = Math.min(caret.getDot(), caret.getMark());
    int endCaret = Math.max(caret.getDot(), caret.getMark());

    try {

        int startLine = currentEditor.getLineOfOffset(startCaret);
        int endLine = currentEditor.getLineOfOffset(endCaret);
        int fromPos = currentEditor.getLineStartOffset(startLine);
        int length = currentEditor.getLineEndOffset(endLine) - fromPos;

        String text = currentEditor.getText(fromPos, length);
        text = sortLinesDesc(text);
        document.remove(fromPos, length);
        document.insertString(fromPos, text, null);
        caret.setDot(fromPos);
        caret.moveDot(fromPos + length);
        currentEditor.requestFocus();
    } catch (BadLocationException e1) {
        observer.errorMessage(e1);
    }

}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void actionPerformed(ActionEvent e) {
    JTextArea currentEditor = observer.getActiveEditor().getEditor();
    Document document = currentEditor.getDocument();
    Caret caret = currentEditor.getCaret();

    int startCaret = Math.min(caret.getDot(), caret.getMark());
    int endCaret = Math.max(caret.getDot(), caret.getMark());

    try {

        int startLine = currentEditor.getLineOfOffset(startCaret);
        int endLine = currentEditor.getLineOfOffset(endCaret);
        int fromPos = currentEditor.getLineStartOffset(startLine);
        int length = currentEditor.getLineEndOffset(endLine) - fromPos;

        String text = currentEditor.getText(fromPos, length);
        text = sortLinesAsc(text);
        document.remove(fromPos, length);
        document.insertString(fromPos, text, null);
        caret.setDot(fromPos);
        caret.moveDot(fromPos + length);
        currentEditor.requestFocus();
    } catch (BadLocationException e1) {
        observer.errorMessage(e1);
    }

}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * {@inheritDoc}
 */
@Override
public void actionPerformed(ActionEvent e) {
    JTextArea currentEditor = observer.getActiveEditor().getEditor();
    Document document = currentEditor.getDocument();
    Caret caret = currentEditor.getCaret();

    int startCaret = Math.min(caret.getDot(), caret.getMark());
    int endCaret = Math.max(caret.getDot(), caret.getMark());

    try {

        int startLine = currentEditor.getLineOfOffset(startCaret);
        int endLine = currentEditor.getLineOfOffset(endCaret);
        int fromPos = currentEditor.getLineStartOffset(startLine);
        int length = currentEditor.getLineEndOffset(endLine) - fromPos + 1;

        String text = currentEditor.getText(fromPos, length);
        text = removeLines(text);
        document.remove(fromPos, length - 1);
        document.insertString(fromPos, text, null);
        caret.setDot(fromPos);
        caret.moveDot(length - 1);
        currentEditor.requestFocus();
    } catch (BadLocationException e1) {
        observer.errorMessage(e1);
    }
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
public TextAreaOutputStream(JTextArea area) {
	this.area = area;
	DefaultCaret caret = (DefaultCaret)area.getCaret();
	caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
public SyncSinkFrame(){
	super("SyncSink");
	
	logTextField = new JTextArea();
	logTextField.setEditable(false);
	DefaultCaret caret = (DefaultCaret)logTextField.getCaret();
	caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
	
	StringBuilder sb = new StringBuilder();
	sb.append("----------------------------------------\n");
	sb.append("Configuration currently in use: \n");
	for(Key key : Key.values()){
		sb.append("\t");
		sb.append(key.name());
		sb.append("=");
		sb.append(Config.get(key));
		sb.append("\n");
	}
	sb.append("----------------------------------------\n");
	logTextField.setText(sb.toString());
	
	
	this.setLayout(new BorderLayout());
	this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	
	cs = new CoordinateSystem(AxisUnit.OCCURENCES, 0, 1000);
	
	linkedPanel = new LinkedPanel(cs);
	linkedPanel.addLayer(new BackgroundLayer(cs));
	linkedPanel.addLayer(new ZoomMouseListenerLayer());
	linkedPanel.addLayer(new DragMouseListenerLayer(cs));
	linkedPanel.addLayer(new BackgroundLayer(cs));
	linkedPanel.addLayer(new TimeAxisLayer(cs));
	linkedPanel.addLayer(new SelectionLayer(cs));
	linkedPanel.getViewPort().addViewPortChangedListener(this);
	
	matches = new ArrayList<NFFTSyncMatch>();
	
	this.streamLayers = new ArrayList<StreamLayer>();
	this.streamFiles = new ArrayList<File>();
	
	JTabbedPane tabbedPane = new JTabbedPane();

	
	tabbedPane.addTab("Timebox plot", null, linkedPanel,"Timebox plots");
	tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);

	
	tabbedPane.addTab("Messages", null, new JScrollPane(logTextField),"Logs messages");
	tabbedPane.setMnemonicAt(1, KeyEvent.VK_2);
	
	tabbedPane.setTabPlacement(JTabbedPane.BOTTOM);
	tabbedPane.setBorder(new EmptyBorder(0,0,0,0));
	
	this.add(tabbedPane,BorderLayout.CENTER);
	this.add(createStatusBarPanel(),BorderLayout.SOUTH);
	
	new FileDrop(null, tabbedPane, /*dragBorder,*/ new FileDrop.Listener(){   
		public void filesDropped( final File[] files ){  
			new Thread(new Runnable(){
				@Override
				public void run() {
					for( int i = 0; i < files.length; i++) {   
						final File fileToAdd = files[i];
						logMessage("Adding " + fileToAdd.getPath()  + "...");							
			            openFile(fileToAdd,streamFiles.size());
			            logMessage("Added " + fileToAdd.getPath()  + ".");	
	                }
			}},"File adding thread").start();
		}
       });
}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * Finds the next instance of the string/regular expression specified
 * from the caret position.  If a match is found, it is selected in this
 * text area.
 *
 * @param textArea The text area in which to search.
 * @param context What to search for and all search options.
 * @return The result of the operation.
 * @throws PatternSyntaxException If this is a regular expression search
 *         but the search text is an invalid regular expression.
 * @see #replace(RTextArea, SearchContext)
 * @see #replaceAll(RTextArea, SearchContext)
 */
public static SearchResult find(JTextArea textArea, SearchContext context) {

	// Always clear previous "mark all" highlights
	if (textArea instanceof RTextArea || context.getMarkAll()) {
		((RTextArea)textArea).clearMarkAllHighlights();
	}
	boolean doMarkAll = textArea instanceof RTextArea && context.getMarkAll();

	String text = context.getSearchFor();
	if (text==null || text.length()==0) {
		if (doMarkAll) {
			// Force "mark all" event to be broadcast so listeners know to
			// clear their mark-all markers.  The RSTA already cleared its
			// highlights above, but cleraMarkAllHighlights() doesn't fire
			// an event itself for performance reasons.
			List<DocumentRange> emptyRangeList = Collections.emptyList();
			((RTextArea)textArea).markAll(emptyRangeList);
		}
		return new SearchResult();
	}

	// Be smart about what position we're "starting" at.  We don't want
	// to find a match in the currently selected text (if any), so we
	// start searching AFTER the selection if searching forward, and
	// BEFORE the selection if searching backward.
	Caret c = textArea.getCaret();
	boolean forward = context.getSearchForward();
	int start = forward ? Math.max(c.getDot(), c.getMark()) :
					Math.min(c.getDot(), c.getMark());

	String findIn = getFindInText(textArea, start, forward);
	if (findIn==null || findIn.length()==0) {
		return new SearchResult();
	}

	int markAllCount = 0;
	if (doMarkAll) {
		markAllCount = markAllImpl((RTextArea)textArea, context).
				getMarkedCount();
	}

	SearchResult result = SearchEngine.findImpl(findIn, context);
	if (result.wasFound() && !result.getMatchRange().isZeroLength()) {
		// Without this, if JTextArea isn't in focus, selection
		// won't appear selected.
		textArea.getCaret().setSelectionVisible(true);
		if (forward && start>-1) {
			result.getMatchRange().translate(start);
		}
		RSyntaxUtilities.selectAndPossiblyCenter(textArea,
				result.getMatchRange(), true);
	}

	result.setMarkedCount(markAllCount);
	return result;

}
 

import javax.swing.JTextArea; //导入方法依赖的package包/类
/**
 * Makes the caret's dot and mark the same location so that, for the
 * next search in the specified direction, a match will be found even
 * if it was within the original dot and mark's selection.
 *
 * @param textArea The text area.
 * @param forward Whether the search will be forward through the
 *        document (<code>false</code> means backward).
 * @return The new dot and mark position.
 */
private static int makeMarkAndDotEqual(JTextArea textArea,
									boolean forward) {
	Caret c = textArea.getCaret();
	int val = forward ? Math.min(c.getDot(), c.getMark()) :
					Math.max(c.getDot(), c.getMark());
	c.setDot(val);
	return val;
}