svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.utils / src / main / java / org / gvsig / utils / console / jedit / JEditTextArea.java @ 40561
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.utils.console.jedit; |
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/*
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* JEditTextArea.java - jEdit's text component
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* Copyright (C) 1999 Slava Pestov
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*
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* You may use and modify this package for any purpose. Redistribution is
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* permitted, in both source and binary form, provided that this notice
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* remains intact in all source distributions of this package.
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*/
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import java.awt.AWTEvent; |
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import java.awt.Component; |
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import java.awt.Container; |
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import java.awt.Dimension; |
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import java.awt.Font; |
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import java.awt.FontMetrics; |
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import java.awt.Insets; |
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import java.awt.LayoutManager; |
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import java.awt.Toolkit; |
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import java.awt.datatransfer.Clipboard; |
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import java.awt.datatransfer.DataFlavor; |
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import java.awt.datatransfer.StringSelection; |
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import java.awt.event.ActionEvent; |
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import java.awt.event.ActionListener; |
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import java.awt.event.AdjustmentEvent; |
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import java.awt.event.AdjustmentListener; |
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import java.awt.event.ComponentAdapter; |
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import java.awt.event.ComponentEvent; |
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import java.awt.event.FocusEvent; |
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import java.awt.event.FocusListener; |
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import java.awt.event.InputEvent; |
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import java.awt.event.KeyEvent; |
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import java.awt.event.MouseAdapter; |
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import java.awt.event.MouseEvent; |
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import java.awt.event.MouseMotionListener; |
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import java.util.Enumeration; |
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import java.util.Vector; |
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import javax.swing.JComponent; |
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import javax.swing.JPopupMenu; |
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import javax.swing.JScrollBar; |
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import javax.swing.SwingUtilities; |
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import javax.swing.Timer; |
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import javax.swing.event.CaretEvent; |
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import javax.swing.event.CaretListener; |
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import javax.swing.event.DocumentEvent; |
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import javax.swing.event.DocumentListener; |
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import javax.swing.event.EventListenerList; |
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import javax.swing.text.BadLocationException; |
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import javax.swing.text.Document; |
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import javax.swing.text.Element; |
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import javax.swing.text.Segment; |
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import javax.swing.text.Utilities; |
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import javax.swing.undo.AbstractUndoableEdit; |
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import javax.swing.undo.CannotRedoException; |
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import javax.swing.undo.CannotUndoException; |
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import javax.swing.undo.UndoableEdit; |
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/**
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* jEdit's text area component. It is more suited for editing program
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* source code than JEditorPane, because it drops the unnecessary features
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* (images, variable-width lines, and so on) and adds a whole bunch of
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* useful goodies such as:
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* <ul>
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* <li>More flexible key binding scheme
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* <li>Supports macro recorders
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* <li>Rectangular selection
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* <li>Bracket highlighting
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* <li>Syntax highlighting
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* <li>Command repetition
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* <li>Block caret can be enabled
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* </ul>
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* It is also faster and doesn't have as many problems. It can be used
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* in other applications; the only other part of jEdit it depends on is
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* the syntax package.<p>
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*
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* To use it in your app, treat it like any other component, for example:
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* <pre>JEditTextArea ta = new JEditTextArea();
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* ta.setTokenMarker(new JavaTokenMarker());
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* ta.setText("public class Test {\n"
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* + " public static void main(String[] args) {\n"
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* + " System.out.println(\"Hello World\");\n"
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* + " }\n"
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* + "}");</pre>
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*
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* @author Slava Pestov
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* @version $Id$
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*/
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public class JEditTextArea extends JComponent |
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{
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/**
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* Adding components with this name to the text area will place
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* them left of the horizontal scroll bar. In jEdit, the status
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* bar is added this way.
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*/
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public static String LEFT_OF_SCROLLBAR = "los"; |
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/**
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* Creates a new JEditTextArea with the default settings.
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*/
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public JEditTextArea()
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{
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this(TextAreaDefaults.getDefaults());
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} |
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/**
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* Creates a new JEditTextArea with the specified settings.
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* @param defaults The default settings
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*/
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public JEditTextArea(TextAreaDefaults defaults)
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{
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// Enable the necessary events
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enableEvents(AWTEvent.KEY_EVENT_MASK);
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// Initialize some misc. stuff
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painter = new TextAreaPainter(this,defaults); |
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documentHandler = new DocumentHandler();
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listenerList = new EventListenerList(); |
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caretEvent = new MutableCaretEvent();
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lineSegment = new Segment(); |
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bracketLine = bracketPosition = -1;
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blink = true;
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// Initialize the GUI
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setLayout(new ScrollLayout());
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add(CENTER,painter); |
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add(RIGHT,vertical = new JScrollBar(JScrollBar.VERTICAL)); |
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add(BOTTOM,horizontal = new JScrollBar(JScrollBar.HORIZONTAL)); |
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// Add some event listeners
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vertical.addAdjustmentListener(new AdjustHandler());
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horizontal.addAdjustmentListener(new AdjustHandler());
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painter.addComponentListener(new ComponentHandler());
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painter.addMouseListener(new MouseHandler());
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painter.addMouseMotionListener(new DragHandler());
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addFocusListener(new FocusHandler());
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// Load the defaults
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setInputHandler(defaults.inputHandler); |
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setDocument(defaults.document); |
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editable = defaults.editable; |
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caretVisible = defaults.caretVisible; |
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caretBlinks = defaults.caretBlinks; |
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electricScroll = defaults.electricScroll; |
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popup = defaults.popup; |
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// We don't seem to get the initial focus event?
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focusedComponent = this;
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} |
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/**
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* Returns if this component can be traversed by pressing
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* the Tab key. This returns false.
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*/
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public final boolean isManagingFocus() |
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{
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return true; |
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} |
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/**
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* Returns the object responsible for painting this text area.
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*/
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public final TextAreaPainter getPainter() |
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{
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return painter;
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} |
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/**
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* Returns the input handler.
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*/
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public final InputHandler getInputHandler() |
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{
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return inputHandler;
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} |
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/**
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* Sets the input handler.
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* @param inputHandler The new input handler
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*/
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public void setInputHandler(InputHandler inputHandler) |
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{
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this.inputHandler = inputHandler;
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} |
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/**
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* Returns true if the caret is blinking, false otherwise.
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*/
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public final boolean isCaretBlinkEnabled() |
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{
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return caretBlinks;
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} |
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/**
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* Toggles caret blinking.
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* @param caretBlinks True if the caret should blink, false otherwise
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*/
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public void setCaretBlinkEnabled(boolean caretBlinks) |
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{
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this.caretBlinks = caretBlinks;
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if(!caretBlinks)
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blink = false;
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painter.invalidateSelectedLines(); |
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} |
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/**
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* Returns true if the caret is visible, false otherwise.
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*/
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public final boolean isCaretVisible() |
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{
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return (!caretBlinks || blink) && caretVisible;
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} |
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/**
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* Sets if the caret should be visible.
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* @param caretVisible True if the caret should be visible, false
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* otherwise
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*/
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public void setCaretVisible(boolean caretVisible) |
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{
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this.caretVisible = caretVisible;
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blink = true;
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painter.invalidateSelectedLines(); |
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} |
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/**
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* Blinks the caret.
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*/
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public final void blinkCaret() |
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{
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if(caretBlinks)
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{
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blink = !blink; |
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painter.invalidateSelectedLines(); |
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} |
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else
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blink = true;
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} |
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/**
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* Returns the number of lines from the top and button of the
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* text area that are always visible.
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*/
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public final int getElectricScroll() |
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{
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return electricScroll;
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} |
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/**
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* Sets the number of lines from the top and bottom of the text
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* area that are always visible
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* @param electricScroll The number of lines always visible from
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* the top or bottom
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*/
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public final void setElectricScroll(int electricScroll) |
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{
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this.electricScroll = electricScroll;
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} |
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/**
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* Updates the state of the scroll bars. This should be called
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* if the number of lines in the document changes, or when the
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* size of the text are changes.
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*/
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public void updateScrollBars() |
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{
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if(vertical != null && visibleLines != 0) |
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{
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vertical.setValues(firstLine,visibleLines,0,getLineCount());
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vertical.setUnitIncrement(2);
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vertical.setBlockIncrement(visibleLines); |
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} |
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int width = painter.getWidth();
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if(horizontal != null && width != 0) |
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{
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horizontal.setValues(-horizontalOffset,width,0,width * 5); |
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horizontal.setUnitIncrement(painter.getFontMetrics() |
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.charWidth('w'));
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horizontal.setBlockIncrement(width / 2);
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} |
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} |
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/**
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* Returns the line displayed at the text area's origin.
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*/
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public final int getFirstLine() |
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{
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return firstLine;
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} |
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/**
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* Sets the line displayed at the text area's origin without
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* updating the scroll bars.
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*/
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public void setFirstLine(int firstLine) |
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{
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if(firstLine == this.firstLine) |
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return;
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int oldFirstLine = this.firstLine; |
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this.firstLine = firstLine;
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if(firstLine != vertical.getValue())
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updateScrollBars(); |
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painter.repaint(); |
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} |
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/**
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* Returns the number of lines visible in this text area.
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*/
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public final int getVisibleLines() |
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{
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return visibleLines;
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} |
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/**
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* Recalculates the number of visible lines. This should not
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* be called directly.
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*/
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public final void recalculateVisibleLines() |
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{
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if(painter == null) |
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return;
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int height = painter.getHeight();
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int lineHeight = painter.getFontMetrics().getHeight();
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int oldVisibleLines = visibleLines;
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visibleLines = height / lineHeight; |
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updateScrollBars(); |
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} |
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/**
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* Returns the horizontal offset of drawn lines.
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*/
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public final int getHorizontalOffset() |
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{
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return horizontalOffset;
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} |
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/**
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* Sets the horizontal offset of drawn lines. This can be used to
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* implement horizontal scrolling.
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* @param horizontalOffset offset The new horizontal offset
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*/
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public void setHorizontalOffset(int horizontalOffset) |
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{
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if(horizontalOffset == this.horizontalOffset) |
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return;
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this.horizontalOffset = horizontalOffset;
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if(horizontalOffset != horizontal.getValue())
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updateScrollBars(); |
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painter.repaint(); |
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} |
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/**
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* A fast way of changing both the first line and horizontal
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* offset.
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* @param firstLine The new first line
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* @param horizontalOffset The new horizontal offset
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* @return True if any of the values were changed, false otherwise
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*/
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public boolean setOrigin(int firstLine, int horizontalOffset) |
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{
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boolean changed = false; |
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int oldFirstLine = this.firstLine; |
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if(horizontalOffset != this.horizontalOffset) |
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{
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this.horizontalOffset = horizontalOffset;
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changed = true;
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} |
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if(firstLine != this.firstLine) |
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{
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this.firstLine = firstLine;
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changed = true;
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} |
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if(changed)
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{
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updateScrollBars(); |
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painter.repaint(); |
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} |
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return changed;
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} |
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/**
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* Ensures that the caret is visible by scrolling the text area if
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* necessary.
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* @return True if scrolling was actually performed, false if the
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* caret was already visible
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*/
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public boolean scrollToCaret() |
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{
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int line = getCaretLine();
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int lineStart = getLineStartOffset(line);
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int offset = Math.max(0,Math.min(getLineLength(line) - 1, |
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getCaretPosition() - lineStart)); |
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return scrollTo(line,offset);
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} |
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/**
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* Ensures that the specified line and offset is visible by scrolling
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* the text area if necessary.
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* @param line The line to scroll to
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* @param offset The offset in the line to scroll to
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* @return True if scrolling was actually performed, false if the
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* line and offset was already visible
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*/
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public boolean scrollTo(int line, int offset) |
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{
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// visibleLines == 0 before the component is realized
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// we can't do any proper scrolling then, so we have
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// this hack...
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if(visibleLines == 0) |
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{
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setFirstLine(Math.max(0,line - electricScroll)); |
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return true; |
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} |
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int newFirstLine = firstLine;
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int newHorizontalOffset = horizontalOffset;
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if(line < firstLine + electricScroll)
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{
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newFirstLine = Math.max(0,line - electricScroll); |
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} |
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else if(line + electricScroll >= firstLine + visibleLines) |
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{
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newFirstLine = (line - visibleLines) + electricScroll + 1;
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if(newFirstLine + visibleLines >= getLineCount())
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newFirstLine = getLineCount() - visibleLines; |
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if(newFirstLine < 0) |
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newFirstLine = 0;
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} |
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int x = _offsetToX(line,offset);
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int width = painter.getFontMetrics().charWidth('w'); |
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if(x < 0) |
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{
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newHorizontalOffset = Math.min(0,horizontalOffset |
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- x + width + 5);
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} |
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else if(x + width >= painter.getWidth()) |
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{
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newHorizontalOffset = horizontalOffset + |
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(painter.getWidth() - x) - width - 5;
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} |
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return setOrigin(newFirstLine,newHorizontalOffset);
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} |
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/**
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* Converts a line index to a y co-ordinate.
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* @param line The line
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*/
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public int lineToY(int line) |
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{
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FontMetrics fm = painter.getFontMetrics();
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return (line - firstLine) * fm.getHeight()
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- (fm.getLeading() + fm.getMaxDescent()); |
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} |
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/**
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* Converts a y co-ordinate to a line index.
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* @param y The y co-ordinate
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*/
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public int yToLine(int y) |
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{
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FontMetrics fm = painter.getFontMetrics();
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int height = fm.getHeight();
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return Math.max(0,Math.min(getLineCount() - 1, |
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y / height + firstLine)); |
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} |
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|
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/**
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* Converts an offset in a line into an x co-ordinate. This is a
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* slow version that can be used any time.
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* @param line The line
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* @param offset The offset, from the start of the line
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*/
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public final int offsetToX(int line, int offset) |
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{
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// don't use cached tokens
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painter.currentLineTokens = null;
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return _offsetToX(line,offset);
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} |
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|
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/**
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* Converts an offset in a line into an x co-ordinate. This is a
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* fast version that should only be used if no changes were made
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* to the text since the last repaint.
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* @param line The line
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* @param offset The offset, from the start of the line
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*/
|
| 522 |
public int _offsetToX(int line, int offset) |
| 523 |
{
|
| 524 |
TokenMarker tokenMarker = getTokenMarker(); |
| 525 |
|
| 526 |
/* Use painter's cached info for speed */
|
| 527 |
FontMetrics fm = painter.getFontMetrics();
|
| 528 |
|
| 529 |
getLineText(line,lineSegment); |
| 530 |
|
| 531 |
int segmentOffset = lineSegment.offset;
|
| 532 |
int x = horizontalOffset;
|
| 533 |
|
| 534 |
/* If syntax coloring is disabled, do simple translation */
|
| 535 |
if(tokenMarker == null) |
| 536 |
{
|
| 537 |
lineSegment.count = offset; |
| 538 |
return x + Utilities.getTabbedTextWidth(lineSegment, |
| 539 |
fm,x,painter,0);
|
| 540 |
} |
| 541 |
/* If syntax coloring is enabled, we have to do this because
|
| 542 |
* tokens can vary in width */
|
| 543 |
else
|
| 544 |
{
|
| 545 |
Token tokens; |
| 546 |
if(painter.currentLineIndex == line
|
| 547 |
&& painter.currentLineTokens != null)
|
| 548 |
tokens = painter.currentLineTokens; |
| 549 |
else
|
| 550 |
{
|
| 551 |
painter.currentLineIndex = line; |
| 552 |
tokens = painter.currentLineTokens |
| 553 |
= tokenMarker.markTokens(lineSegment,line); |
| 554 |
} |
| 555 |
|
| 556 |
Toolkit toolkit = painter.getToolkit();
|
| 557 |
Font defaultFont = painter.getFont();
|
| 558 |
SyntaxStyle[] styles = painter.getStyles();
|
| 559 |
|
| 560 |
for(;;)
|
| 561 |
{
|
| 562 |
byte id = tokens.id;
|
| 563 |
if(id == Token.END)
|
| 564 |
{
|
| 565 |
return x;
|
| 566 |
} |
| 567 |
|
| 568 |
if(id == Token.NULL)
|
| 569 |
fm = painter.getFontMetrics(); |
| 570 |
else
|
| 571 |
fm = styles[id].getFontMetrics(defaultFont); |
| 572 |
|
| 573 |
int length = tokens.length;
|
| 574 |
|
| 575 |
if(offset + segmentOffset < lineSegment.offset + length)
|
| 576 |
{
|
| 577 |
lineSegment.count = offset - (lineSegment.offset - segmentOffset); |
| 578 |
return x + Utilities.getTabbedTextWidth( |
| 579 |
lineSegment,fm,x,painter,0);
|
| 580 |
} |
| 581 |
else
|
| 582 |
{
|
| 583 |
lineSegment.count = length; |
| 584 |
x += Utilities.getTabbedTextWidth(
|
| 585 |
lineSegment,fm,x,painter,0);
|
| 586 |
lineSegment.offset += length; |
| 587 |
} |
| 588 |
tokens = tokens.next; |
| 589 |
} |
| 590 |
} |
| 591 |
} |
| 592 |
|
| 593 |
/**
|
| 594 |
* Converts an x co-ordinate to an offset within a line.
|
| 595 |
* @param line The line
|
| 596 |
* @param x The x co-ordinate
|
| 597 |
*/
|
| 598 |
public int xToOffset(int line, int x) |
| 599 |
{
|
| 600 |
TokenMarker tokenMarker = getTokenMarker(); |
| 601 |
|
| 602 |
/* Use painter's cached info for speed */
|
| 603 |
FontMetrics fm = painter.getFontMetrics();
|
| 604 |
|
| 605 |
getLineText(line,lineSegment); |
| 606 |
|
| 607 |
char[] segmentArray = lineSegment.array; |
| 608 |
int segmentOffset = lineSegment.offset;
|
| 609 |
int segmentCount = lineSegment.count;
|
| 610 |
|
| 611 |
int width = horizontalOffset;
|
| 612 |
|
| 613 |
if(tokenMarker == null) |
| 614 |
{
|
| 615 |
for(int i = 0; i < segmentCount; i++) |
| 616 |
{
|
| 617 |
char c = segmentArray[i + segmentOffset];
|
| 618 |
int charWidth;
|
| 619 |
if(c == '\t') |
| 620 |
charWidth = (int)painter.nextTabStop(width,i)
|
| 621 |
- width; |
| 622 |
else
|
| 623 |
charWidth = fm.charWidth(c); |
| 624 |
|
| 625 |
if(painter.isBlockCaretEnabled())
|
| 626 |
{
|
| 627 |
if(x - charWidth <= width)
|
| 628 |
return i;
|
| 629 |
} |
| 630 |
else
|
| 631 |
{
|
| 632 |
if(x - charWidth / 2 <= width) |
| 633 |
return i;
|
| 634 |
} |
| 635 |
|
| 636 |
width += charWidth; |
| 637 |
} |
| 638 |
|
| 639 |
return segmentCount;
|
| 640 |
} |
| 641 |
else
|
| 642 |
{
|
| 643 |
Token tokens; |
| 644 |
if(painter.currentLineIndex == line && painter
|
| 645 |
.currentLineTokens != null)
|
| 646 |
tokens = painter.currentLineTokens; |
| 647 |
else
|
| 648 |
{
|
| 649 |
painter.currentLineIndex = line; |
| 650 |
tokens = painter.currentLineTokens |
| 651 |
= tokenMarker.markTokens(lineSegment,line); |
| 652 |
} |
| 653 |
|
| 654 |
int offset = 0; |
| 655 |
Toolkit toolkit = painter.getToolkit();
|
| 656 |
Font defaultFont = painter.getFont();
|
| 657 |
SyntaxStyle[] styles = painter.getStyles();
|
| 658 |
|
| 659 |
for(;;)
|
| 660 |
{
|
| 661 |
byte id = tokens.id;
|
| 662 |
if(id == Token.END)
|
| 663 |
return offset;
|
| 664 |
|
| 665 |
if(id == Token.NULL)
|
| 666 |
fm = painter.getFontMetrics(); |
| 667 |
else
|
| 668 |
fm = styles[id].getFontMetrics(defaultFont); |
| 669 |
|
| 670 |
int length = tokens.length;
|
| 671 |
|
| 672 |
for(int i = 0; i < length; i++) |
| 673 |
{
|
| 674 |
char c = segmentArray[segmentOffset + offset + i];
|
| 675 |
int charWidth;
|
| 676 |
if(c == '\t') |
| 677 |
charWidth = (int)painter.nextTabStop(width,offset + i)
|
| 678 |
- width; |
| 679 |
else
|
| 680 |
charWidth = fm.charWidth(c); |
| 681 |
|
| 682 |
if(painter.isBlockCaretEnabled())
|
| 683 |
{
|
| 684 |
if(x - charWidth <= width)
|
| 685 |
return offset + i;
|
| 686 |
} |
| 687 |
else
|
| 688 |
{
|
| 689 |
if(x - charWidth / 2 <= width) |
| 690 |
return offset + i;
|
| 691 |
} |
| 692 |
|
| 693 |
width += charWidth; |
| 694 |
} |
| 695 |
|
| 696 |
offset += length; |
| 697 |
tokens = tokens.next; |
| 698 |
} |
| 699 |
} |
| 700 |
} |
| 701 |
|
| 702 |
/**
|
| 703 |
* Converts a point to an offset, from the start of the text.
|
| 704 |
* @param x The x co-ordinate of the point
|
| 705 |
* @param y The y co-ordinate of the point
|
| 706 |
*/
|
| 707 |
public int xyToOffset(int x, int y) |
| 708 |
{
|
| 709 |
int line = yToLine(y);
|
| 710 |
int start = getLineStartOffset(line);
|
| 711 |
return start + xToOffset(line,x);
|
| 712 |
} |
| 713 |
|
| 714 |
/**
|
| 715 |
* Returns the document this text area is editing.
|
| 716 |
*/
|
| 717 |
public final Document getDocument() |
| 718 |
{
|
| 719 |
return document;
|
| 720 |
} |
| 721 |
|
| 722 |
/**
|
| 723 |
* Sets the document this text area is editing.
|
| 724 |
* @param document The document
|
| 725 |
*/
|
| 726 |
public void setDocument(SyntaxDocument document) |
| 727 |
{
|
| 728 |
if(this.document == document) |
| 729 |
return;
|
| 730 |
if(this.document != null) |
| 731 |
this.document.removeDocumentListener(documentHandler);
|
| 732 |
this.document = document;
|
| 733 |
|
| 734 |
document.addDocumentListener(documentHandler); |
| 735 |
|
| 736 |
select(0,0); |
| 737 |
updateScrollBars(); |
| 738 |
painter.repaint(); |
| 739 |
} |
| 740 |
|
| 741 |
/**
|
| 742 |
* Returns the document's token marker. Equivalent to calling
|
| 743 |
* <code>getDocument().getTokenMarker()</code>.
|
| 744 |
*/
|
| 745 |
public final TokenMarker getTokenMarker() |
| 746 |
{
|
| 747 |
return document.getTokenMarker();
|
| 748 |
} |
| 749 |
|
| 750 |
/**
|
| 751 |
* Sets the document's token marker. Equivalent to caling
|
| 752 |
* <code>getDocument().setTokenMarker()</code>.
|
| 753 |
* @param tokenMarker The token marker
|
| 754 |
*/
|
| 755 |
public final void setTokenMarker(TokenMarker tokenMarker) |
| 756 |
{
|
| 757 |
document.setTokenMarker(tokenMarker); |
| 758 |
} |
| 759 |
|
| 760 |
/**
|
| 761 |
* Returns the length of the document. Equivalent to calling
|
| 762 |
* <code>getDocument().getLength()</code>.
|
| 763 |
*/
|
| 764 |
public final int getDocumentLength() |
| 765 |
{
|
| 766 |
return document.getLength();
|
| 767 |
} |
| 768 |
|
| 769 |
/**
|
| 770 |
* Returns the number of lines in the document.
|
| 771 |
*/
|
| 772 |
public final int getLineCount() |
| 773 |
{
|
| 774 |
return document.getDefaultRootElement().getElementCount();
|
| 775 |
} |
| 776 |
|
| 777 |
/**
|
| 778 |
* Returns the line containing the specified offset.
|
| 779 |
* @param offset The offset
|
| 780 |
*/
|
| 781 |
public final int getLineOfOffset(int offset) |
| 782 |
{
|
| 783 |
return document.getDefaultRootElement().getElementIndex(offset);
|
| 784 |
} |
| 785 |
|
| 786 |
/**
|
| 787 |
* Returns the start offset of the specified line.
|
| 788 |
* @param line The line
|
| 789 |
* @return The start offset of the specified line, or -1 if the line is
|
| 790 |
* invalid
|
| 791 |
*/
|
| 792 |
public int getLineStartOffset(int line) |
| 793 |
{
|
| 794 |
Element lineElement = document.getDefaultRootElement()
|
| 795 |
.getElement(line); |
| 796 |
if(lineElement == null) |
| 797 |
return -1; |
| 798 |
else
|
| 799 |
return lineElement.getStartOffset();
|
| 800 |
} |
| 801 |
|
| 802 |
/**
|
| 803 |
* Returns the end offset of the specified line.
|
| 804 |
* @param line The line
|
| 805 |
* @return The end offset of the specified line, or -1 if the line is
|
| 806 |
* invalid.
|
| 807 |
*/
|
| 808 |
public int getLineEndOffset(int line) |
| 809 |
{
|
| 810 |
Element lineElement = document.getDefaultRootElement()
|
| 811 |
.getElement(line); |
| 812 |
if(lineElement == null) |
| 813 |
return -1; |
| 814 |
else
|
| 815 |
return lineElement.getEndOffset();
|
| 816 |
} |
| 817 |
|
| 818 |
/**
|
| 819 |
* Returns the length of the specified line.
|
| 820 |
* @param line The line
|
| 821 |
*/
|
| 822 |
public int getLineLength(int line) |
| 823 |
{
|
| 824 |
Element lineElement = document.getDefaultRootElement()
|
| 825 |
.getElement(line); |
| 826 |
if(lineElement == null) |
| 827 |
return -1; |
| 828 |
else
|
| 829 |
return lineElement.getEndOffset()
|
| 830 |
- lineElement.getStartOffset() - 1;
|
| 831 |
} |
| 832 |
|
| 833 |
/**
|
| 834 |
* Returns the entire text of this text area.
|
| 835 |
*/
|
| 836 |
public String getText() |
| 837 |
{
|
| 838 |
try
|
| 839 |
{
|
| 840 |
return document.getText(0,document.getLength()); |
| 841 |
} |
| 842 |
catch(BadLocationException bl) |
| 843 |
{
|
| 844 |
bl.printStackTrace(); |
| 845 |
return null; |
| 846 |
} |
| 847 |
} |
| 848 |
|
| 849 |
/**
|
| 850 |
* Sets the entire text of this text area.
|
| 851 |
*/
|
| 852 |
public void setText(String text) |
| 853 |
{
|
| 854 |
try
|
| 855 |
{
|
| 856 |
document.beginCompoundEdit(); |
| 857 |
document.remove(0,document.getLength());
|
| 858 |
document.insertString(0,text,null); |
| 859 |
} |
| 860 |
catch(BadLocationException bl) |
| 861 |
{
|
| 862 |
bl.printStackTrace(); |
| 863 |
} |
| 864 |
finally
|
| 865 |
{
|
| 866 |
document.endCompoundEdit(); |
| 867 |
} |
| 868 |
} |
| 869 |
|
| 870 |
/**
|
| 871 |
* Returns the specified substring of the document.
|
| 872 |
* @param start The start offset
|
| 873 |
* @param len The length of the substring
|
| 874 |
* @return The substring, or null if the offsets are invalid
|
| 875 |
*/
|
| 876 |
public final String getText(int start, int len) |
| 877 |
{
|
| 878 |
try
|
| 879 |
{
|
| 880 |
return document.getText(start,len);
|
| 881 |
} |
| 882 |
catch(BadLocationException bl) |
| 883 |
{
|
| 884 |
bl.printStackTrace(); |
| 885 |
return null; |
| 886 |
} |
| 887 |
} |
| 888 |
|
| 889 |
/**
|
| 890 |
* Copies the specified substring of the document into a segment.
|
| 891 |
* If the offsets are invalid, the segment will contain a null string.
|
| 892 |
* @param start The start offset
|
| 893 |
* @param len The length of the substring
|
| 894 |
* @param segment The segment
|
| 895 |
*/
|
| 896 |
public final void getText(int start, int len, Segment segment) |
| 897 |
{
|
| 898 |
try
|
| 899 |
{
|
| 900 |
document.getText(start,len,segment); |
| 901 |
} |
| 902 |
catch(BadLocationException bl) |
| 903 |
{
|
| 904 |
bl.printStackTrace(); |
| 905 |
segment.offset = segment.count = 0;
|
| 906 |
} |
| 907 |
} |
| 908 |
|
| 909 |
/**
|
| 910 |
* Returns the text on the specified line.
|
| 911 |
* @param lineIndex The line
|
| 912 |
* @return The text, or null if the line is invalid
|
| 913 |
*/
|
| 914 |
public final String getLineText(int lineIndex) |
| 915 |
{
|
| 916 |
int start = getLineStartOffset(lineIndex);
|
| 917 |
return getText(start,getLineEndOffset(lineIndex) - start - 1); |
| 918 |
} |
| 919 |
|
| 920 |
/**
|
| 921 |
* Copies the text on the specified line into a segment. If the line
|
| 922 |
* is invalid, the segment will contain a null string.
|
| 923 |
* @param lineIndex The line
|
| 924 |
*/
|
| 925 |
public final void getLineText(int lineIndex, Segment segment) |
| 926 |
{
|
| 927 |
int start = getLineStartOffset(lineIndex);
|
| 928 |
getText(start,getLineEndOffset(lineIndex) - start - 1,segment);
|
| 929 |
} |
| 930 |
|
| 931 |
/**
|
| 932 |
* Returns the selection start offset.
|
| 933 |
*/
|
| 934 |
public final int getSelectionStart() |
| 935 |
{
|
| 936 |
return selectionStart;
|
| 937 |
} |
| 938 |
|
| 939 |
/**
|
| 940 |
* Returns the offset where the selection starts on the specified
|
| 941 |
* line.
|
| 942 |
*/
|
| 943 |
public int getSelectionStart(int line) |
| 944 |
{
|
| 945 |
if(line == selectionStartLine)
|
| 946 |
return selectionStart;
|
| 947 |
else if(rectSelect) |
| 948 |
{
|
| 949 |
Element map = document.getDefaultRootElement();
|
| 950 |
int start = selectionStart - map.getElement(selectionStartLine)
|
| 951 |
.getStartOffset(); |
| 952 |
|
| 953 |
Element lineElement = map.getElement(line);
|
| 954 |
int lineStart = lineElement.getStartOffset();
|
| 955 |
int lineEnd = lineElement.getEndOffset() - 1; |
| 956 |
return Math.min(lineEnd,lineStart + start); |
| 957 |
} |
| 958 |
else
|
| 959 |
return getLineStartOffset(line);
|
| 960 |
} |
| 961 |
|
| 962 |
/**
|
| 963 |
* Returns the selection start line.
|
| 964 |
*/
|
| 965 |
public final int getSelectionStartLine() |
| 966 |
{
|
| 967 |
return selectionStartLine;
|
| 968 |
} |
| 969 |
|
| 970 |
/**
|
| 971 |
* Sets the selection start. The new selection will be the new
|
| 972 |
* selection start and the old selection end.
|
| 973 |
* @param selectionStart The selection start
|
| 974 |
* @see #select(int,int)
|
| 975 |
*/
|
| 976 |
public final void setSelectionStart(int selectionStart) |
| 977 |
{
|
| 978 |
select(selectionStart,selectionEnd); |
| 979 |
} |
| 980 |
|
| 981 |
/**
|
| 982 |
* Returns the selection end offset.
|
| 983 |
*/
|
| 984 |
public final int getSelectionEnd() |
| 985 |
{
|
| 986 |
return selectionEnd;
|
| 987 |
} |
| 988 |
|
| 989 |
/**
|
| 990 |
* Returns the offset where the selection ends on the specified
|
| 991 |
* line.
|
| 992 |
*/
|
| 993 |
public int getSelectionEnd(int line) |
| 994 |
{
|
| 995 |
if(line == selectionEndLine)
|
| 996 |
return selectionEnd;
|
| 997 |
else if(rectSelect) |
| 998 |
{
|
| 999 |
Element map = document.getDefaultRootElement();
|
| 1000 |
int end = selectionEnd - map.getElement(selectionEndLine)
|
| 1001 |
.getStartOffset(); |
| 1002 |
|
| 1003 |
Element lineElement = map.getElement(line);
|
| 1004 |
int lineStart = lineElement.getStartOffset();
|
| 1005 |
int lineEnd = lineElement.getEndOffset() - 1; |
| 1006 |
return Math.min(lineEnd,lineStart + end); |
| 1007 |
} |
| 1008 |
else
|
| 1009 |
return getLineEndOffset(line) - 1; |
| 1010 |
} |
| 1011 |
|
| 1012 |
/**
|
| 1013 |
* Returns the selection end line.
|
| 1014 |
*/
|
| 1015 |
public final int getSelectionEndLine() |
| 1016 |
{
|
| 1017 |
return selectionEndLine;
|
| 1018 |
} |
| 1019 |
|
| 1020 |
/**
|
| 1021 |
* Sets the selection end. The new selection will be the old
|
| 1022 |
* selection start and the bew selection end.
|
| 1023 |
* @param selectionEnd The selection end
|
| 1024 |
* @see #select(int,int)
|
| 1025 |
*/
|
| 1026 |
public final void setSelectionEnd(int selectionEnd) |
| 1027 |
{
|
| 1028 |
select(selectionStart,selectionEnd); |
| 1029 |
} |
| 1030 |
|
| 1031 |
/**
|
| 1032 |
* Returns the caret position. This will either be the selection
|
| 1033 |
* start or the selection end, depending on which direction the
|
| 1034 |
* selection was made in.
|
| 1035 |
*/
|
| 1036 |
public final int getCaretPosition() |
| 1037 |
{
|
| 1038 |
return (biasLeft ? selectionStart : selectionEnd);
|
| 1039 |
} |
| 1040 |
|
| 1041 |
/**
|
| 1042 |
* Returns the caret line.
|
| 1043 |
*/
|
| 1044 |
public final int getCaretLine() |
| 1045 |
{
|
| 1046 |
return (biasLeft ? selectionStartLine : selectionEndLine);
|
| 1047 |
} |
| 1048 |
|
| 1049 |
/**
|
| 1050 |
* Returns the mark position. This will be the opposite selection
|
| 1051 |
* bound to the caret position.
|
| 1052 |
* @see #getCaretPosition()
|
| 1053 |
*/
|
| 1054 |
public final int getMarkPosition() |
| 1055 |
{
|
| 1056 |
return (biasLeft ? selectionEnd : selectionStart);
|
| 1057 |
} |
| 1058 |
|
| 1059 |
/**
|
| 1060 |
* Returns the mark line.
|
| 1061 |
*/
|
| 1062 |
public final int getMarkLine() |
| 1063 |
{
|
| 1064 |
return (biasLeft ? selectionEndLine : selectionStartLine);
|
| 1065 |
} |
| 1066 |
|
| 1067 |
/**
|
| 1068 |
* Sets the caret position. The new selection will consist of the
|
| 1069 |
* caret position only (hence no text will be selected)
|
| 1070 |
* @param caret The caret position
|
| 1071 |
* @see #select(int,int)
|
| 1072 |
*/
|
| 1073 |
public final void setCaretPosition(int caret) |
| 1074 |
{
|
| 1075 |
select(caret,caret); |
| 1076 |
} |
| 1077 |
|
| 1078 |
/**
|
| 1079 |
* Selects all text in the document.
|
| 1080 |
*/
|
| 1081 |
public final void selectAll() |
| 1082 |
{
|
| 1083 |
select(0,getDocumentLength());
|
| 1084 |
} |
| 1085 |
|
| 1086 |
/**
|
| 1087 |
* Moves the mark to the caret position.
|
| 1088 |
*/
|
| 1089 |
public final void selectNone() |
| 1090 |
{
|
| 1091 |
select(getCaretPosition(),getCaretPosition()); |
| 1092 |
} |
| 1093 |
|
| 1094 |
/**
|
| 1095 |
* Selects from the start offset to the end offset. This is the
|
| 1096 |
* general selection method used by all other selecting methods.
|
| 1097 |
* The caret position will be start if start < end, and end
|
| 1098 |
* if end > start.
|
| 1099 |
* @param start The start offset
|
| 1100 |
* @param end The end offset
|
| 1101 |
*/
|
| 1102 |
public void select(int start, int end) |
| 1103 |
{
|
| 1104 |
int newStart, newEnd;
|
| 1105 |
boolean newBias;
|
| 1106 |
if(start <= end)
|
| 1107 |
{
|
| 1108 |
newStart = start; |
| 1109 |
newEnd = end; |
| 1110 |
newBias = false;
|
| 1111 |
} |
| 1112 |
else
|
| 1113 |
{
|
| 1114 |
newStart = end; |
| 1115 |
newEnd = start; |
| 1116 |
newBias = true;
|
| 1117 |
} |
| 1118 |
|
| 1119 |
if(newStart < 0 || newEnd > getDocumentLength()) |
| 1120 |
{
|
| 1121 |
throw new IllegalArgumentException("Bounds out of" |
| 1122 |
+ " range: " + newStart + "," + |
| 1123 |
newEnd); |
| 1124 |
} |
| 1125 |
|
| 1126 |
// If the new position is the same as the old, we don't
|
| 1127 |
// do all this crap, however we still do the stuff at
|
| 1128 |
// the end (clearing magic position, scrolling)
|
| 1129 |
if(newStart != selectionStart || newEnd != selectionEnd
|
| 1130 |
|| newBias != biasLeft) |
| 1131 |
{
|
| 1132 |
int newStartLine = getLineOfOffset(newStart);
|
| 1133 |
int newEndLine = getLineOfOffset(newEnd);
|
| 1134 |
|
| 1135 |
if(painter.isBracketHighlightEnabled())
|
| 1136 |
{
|
| 1137 |
if(bracketLine != -1) |
| 1138 |
painter.invalidateLine(bracketLine); |
| 1139 |
updateBracketHighlight(end); |
| 1140 |
if(bracketLine != -1) |
| 1141 |
painter.invalidateLine(bracketLine); |
| 1142 |
} |
| 1143 |
|
| 1144 |
painter.invalidateLineRange(selectionStartLine,selectionEndLine); |
| 1145 |
painter.invalidateLineRange(newStartLine,newEndLine); |
| 1146 |
|
| 1147 |
document.addUndoableEdit(new CaretUndo(
|
| 1148 |
selectionStart,selectionEnd)); |
| 1149 |
|
| 1150 |
selectionStart = newStart; |
| 1151 |
selectionEnd = newEnd; |
| 1152 |
selectionStartLine = newStartLine; |
| 1153 |
selectionEndLine = newEndLine; |
| 1154 |
biasLeft = newBias; |
| 1155 |
|
| 1156 |
fireCaretEvent(); |
| 1157 |
} |
| 1158 |
|
| 1159 |
// When the user is typing, etc, we don't want the caret
|
| 1160 |
// to blink
|
| 1161 |
blink = true;
|
| 1162 |
caretTimer.restart(); |
| 1163 |
|
| 1164 |
// Disable rectangle select if selection start = selection end
|
| 1165 |
if(selectionStart == selectionEnd)
|
| 1166 |
rectSelect = false;
|
| 1167 |
|
| 1168 |
// Clear the `magic' caret position used by up/down
|
| 1169 |
magicCaret = -1;
|
| 1170 |
|
| 1171 |
scrollToCaret(); |
| 1172 |
} |
| 1173 |
|
| 1174 |
/**
|
| 1175 |
* Returns the selected text, or null if no selection is active.
|
| 1176 |
*/
|
| 1177 |
public final String getSelectedText() |
| 1178 |
{
|
| 1179 |
if(selectionStart == selectionEnd)
|
| 1180 |
return null; |
| 1181 |
|
| 1182 |
if(rectSelect)
|
| 1183 |
{
|
| 1184 |
// Return each row of the selection on a new line
|
| 1185 |
|
| 1186 |
Element map = document.getDefaultRootElement();
|
| 1187 |
|
| 1188 |
int start = selectionStart - map.getElement(selectionStartLine)
|
| 1189 |
.getStartOffset(); |
| 1190 |
int end = selectionEnd - map.getElement(selectionEndLine)
|
| 1191 |
.getStartOffset(); |
| 1192 |
|
| 1193 |
// Certain rectangles satisfy this condition...
|
| 1194 |
if(end < start)
|
| 1195 |
{
|
| 1196 |
int tmp = end;
|
| 1197 |
end = start; |
| 1198 |
start = tmp; |
| 1199 |
} |
| 1200 |
|
| 1201 |
StringBuffer buf = new StringBuffer(); |
| 1202 |
Segment seg = new Segment(); |
| 1203 |
|
| 1204 |
for(int i = selectionStartLine; i <= selectionEndLine; i++) |
| 1205 |
{
|
| 1206 |
Element lineElement = map.getElement(i);
|
| 1207 |
int lineStart = lineElement.getStartOffset();
|
| 1208 |
int lineEnd = lineElement.getEndOffset() - 1; |
| 1209 |
int lineLen = lineEnd - lineStart;
|
| 1210 |
|
| 1211 |
lineStart = Math.min(lineStart + start,lineEnd);
|
| 1212 |
lineLen = Math.min(end - start,lineEnd - lineStart);
|
| 1213 |
|
| 1214 |
getText(lineStart,lineLen,seg); |
| 1215 |
buf.append(seg.array,seg.offset,seg.count); |
| 1216 |
|
| 1217 |
if(i != selectionEndLine)
|
| 1218 |
buf.append('\n');
|
| 1219 |
} |
| 1220 |
|
| 1221 |
return buf.toString();
|
| 1222 |
} |
| 1223 |
else
|
| 1224 |
{
|
| 1225 |
return getText(selectionStart,
|
| 1226 |
selectionEnd - selectionStart); |
| 1227 |
} |
| 1228 |
} |
| 1229 |
|
| 1230 |
/**
|
| 1231 |
* Replaces the selection with the specified text.
|
| 1232 |
* @param selectedText The replacement text for the selection
|
| 1233 |
*/
|
| 1234 |
public void setSelectedText(String selectedText) |
| 1235 |
{
|
| 1236 |
if(!editable)
|
| 1237 |
{
|
| 1238 |
throw new InternalError("Text component" |
| 1239 |
+ " read only");
|
| 1240 |
} |
| 1241 |
|
| 1242 |
document.beginCompoundEdit(); |
| 1243 |
|
| 1244 |
try
|
| 1245 |
{
|
| 1246 |
if(rectSelect)
|
| 1247 |
{
|
| 1248 |
Element map = document.getDefaultRootElement();
|
| 1249 |
|
| 1250 |
int start = selectionStart - map.getElement(selectionStartLine)
|
| 1251 |
.getStartOffset(); |
| 1252 |
int end = selectionEnd - map.getElement(selectionEndLine)
|
| 1253 |
.getStartOffset(); |
| 1254 |
|
| 1255 |
// Certain rectangles satisfy this condition...
|
| 1256 |
if(end < start)
|
| 1257 |
{
|
| 1258 |
int tmp = end;
|
| 1259 |
end = start; |
| 1260 |
start = tmp; |
| 1261 |
} |
| 1262 |
|
| 1263 |
int lastNewline = 0; |
| 1264 |
int currNewline = 0; |
| 1265 |
|
| 1266 |
for(int i = selectionStartLine; i <= selectionEndLine; i++) |
| 1267 |
{
|
| 1268 |
Element lineElement = map.getElement(i);
|
| 1269 |
int lineStart = lineElement.getStartOffset();
|
| 1270 |
int lineEnd = lineElement.getEndOffset() - 1; |
| 1271 |
int rectStart = Math.min(lineEnd,lineStart + start); |
| 1272 |
|
| 1273 |
document.remove(rectStart,Math.min(lineEnd - rectStart,
|
| 1274 |
end - start)); |
| 1275 |
|
| 1276 |
if(selectedText == null) |
| 1277 |
continue;
|
| 1278 |
|
| 1279 |
currNewline = selectedText.indexOf('\n',lastNewline);
|
| 1280 |
if(currNewline == -1) |
| 1281 |
currNewline = selectedText.length(); |
| 1282 |
|
| 1283 |
document.insertString(rectStart,selectedText |
| 1284 |
.substring(lastNewline,currNewline),null);
|
| 1285 |
|
| 1286 |
lastNewline = Math.min(selectedText.length(),
|
| 1287 |
currNewline + 1);
|
| 1288 |
} |
| 1289 |
|
| 1290 |
if(selectedText != null && |
| 1291 |
currNewline != selectedText.length()) |
| 1292 |
{
|
| 1293 |
int offset = map.getElement(selectionEndLine)
|
| 1294 |
.getEndOffset() - 1;
|
| 1295 |
document.insertString(offset,"\n",null); |
| 1296 |
document.insertString(offset + 1,selectedText
|
| 1297 |
.substring(currNewline + 1),null); |
| 1298 |
} |
| 1299 |
} |
| 1300 |
else
|
| 1301 |
{
|
| 1302 |
document.remove(selectionStart, |
| 1303 |
selectionEnd - selectionStart); |
| 1304 |
if(selectedText != null) |
| 1305 |
{
|
| 1306 |
document.insertString(selectionStart, |
| 1307 |
selectedText,null);
|
| 1308 |
} |
| 1309 |
} |
| 1310 |
} |
| 1311 |
catch(BadLocationException bl) |
| 1312 |
{
|
| 1313 |
bl.printStackTrace(); |
| 1314 |
throw new InternalError("Cannot replace" |
| 1315 |
+ " selection");
|
| 1316 |
} |
| 1317 |
// No matter what happends... stops us from leaving document
|
| 1318 |
// in a bad state
|
| 1319 |
finally
|
| 1320 |
{
|
| 1321 |
document.endCompoundEdit(); |
| 1322 |
} |
| 1323 |
|
| 1324 |
setCaretPosition(selectionEnd); |
| 1325 |
} |
| 1326 |
|
| 1327 |
/**
|
| 1328 |
* Returns true if this text area is editable, false otherwise.
|
| 1329 |
*/
|
| 1330 |
public final boolean isEditable() |
| 1331 |
{
|
| 1332 |
return editable;
|
| 1333 |
} |
| 1334 |
|
| 1335 |
/**
|
| 1336 |
* Sets if this component is editable.
|
| 1337 |
* @param editable True if this text area should be editable,
|
| 1338 |
* false otherwise
|
| 1339 |
*/
|
| 1340 |
public final void setEditable(boolean editable) |
| 1341 |
{
|
| 1342 |
this.editable = editable;
|
| 1343 |
} |
| 1344 |
|
| 1345 |
/**
|
| 1346 |
* Returns the right click popup menu.
|
| 1347 |
*/
|
| 1348 |
public final JPopupMenu getRightClickPopup() |
| 1349 |
{
|
| 1350 |
return popup;
|
| 1351 |
} |
| 1352 |
|
| 1353 |
/**
|
| 1354 |
* Sets the right click popup menu.
|
| 1355 |
* @param popup The popup
|
| 1356 |
*/
|
| 1357 |
public final void setRightClickPopup(JPopupMenu popup) |
| 1358 |
{
|
| 1359 |
this.popup = popup;
|
| 1360 |
} |
| 1361 |
|
| 1362 |
/**
|
| 1363 |
* Returns the `magic' caret position. This can be used to preserve
|
| 1364 |
* the column position when moving up and down lines.
|
| 1365 |
*/
|
| 1366 |
public final int getMagicCaretPosition() |
| 1367 |
{
|
| 1368 |
return magicCaret;
|
| 1369 |
} |
| 1370 |
|
| 1371 |
/**
|
| 1372 |
* Sets the `magic' caret position. This can be used to preserve
|
| 1373 |
* the column position when moving up and down lines.
|
| 1374 |
* @param magicCaret The magic caret position
|
| 1375 |
*/
|
| 1376 |
public final void setMagicCaretPosition(int magicCaret) |
| 1377 |
{
|
| 1378 |
this.magicCaret = magicCaret;
|
| 1379 |
} |
| 1380 |
|
| 1381 |
/**
|
| 1382 |
* Similar to <code>setSelectedText()</code>, but overstrikes the
|
| 1383 |
* appropriate number of characters if overwrite mode is enabled.
|
| 1384 |
* @param str The string
|
| 1385 |
* @see #setSelectedText(String)
|
| 1386 |
* @see #isOverwriteEnabled()
|
| 1387 |
*/
|
| 1388 |
public void overwriteSetSelectedText(String str) |
| 1389 |
{
|
| 1390 |
// Don't overstrike if there is a selection
|
| 1391 |
if(!overwrite || selectionStart != selectionEnd)
|
| 1392 |
{
|
| 1393 |
setSelectedText(str); |
| 1394 |
return;
|
| 1395 |
} |
| 1396 |
|
| 1397 |
// Don't overstrike if we're on the end of
|
| 1398 |
// the line
|
| 1399 |
int caret = getCaretPosition();
|
| 1400 |
int caretLineEnd = getLineEndOffset(getCaretLine());
|
| 1401 |
if(caretLineEnd - caret <= str.length())
|
| 1402 |
{
|
| 1403 |
setSelectedText(str); |
| 1404 |
return;
|
| 1405 |
} |
| 1406 |
|
| 1407 |
document.beginCompoundEdit(); |
| 1408 |
|
| 1409 |
try
|
| 1410 |
{
|
| 1411 |
document.remove(caret,str.length()); |
| 1412 |
document.insertString(caret,str,null);
|
| 1413 |
} |
| 1414 |
catch(BadLocationException bl) |
| 1415 |
{
|
| 1416 |
bl.printStackTrace(); |
| 1417 |
} |
| 1418 |
finally
|
| 1419 |
{
|
| 1420 |
document.endCompoundEdit(); |
| 1421 |
} |
| 1422 |
} |
| 1423 |
|
| 1424 |
/**
|
| 1425 |
* Returns true if overwrite mode is enabled, false otherwise.
|
| 1426 |
*/
|
| 1427 |
public final boolean isOverwriteEnabled() |
| 1428 |
{
|
| 1429 |
return overwrite;
|
| 1430 |
} |
| 1431 |
|
| 1432 |
/**
|
| 1433 |
* Sets if overwrite mode should be enabled.
|
| 1434 |
* @param overwrite True if overwrite mode should be enabled,
|
| 1435 |
* false otherwise.
|
| 1436 |
*/
|
| 1437 |
public final void setOverwriteEnabled(boolean overwrite) |
| 1438 |
{
|
| 1439 |
this.overwrite = overwrite;
|
| 1440 |
painter.invalidateSelectedLines(); |
| 1441 |
} |
| 1442 |
|
| 1443 |
/**
|
| 1444 |
* Returns true if the selection is rectangular, false otherwise.
|
| 1445 |
*/
|
| 1446 |
public final boolean isSelectionRectangular() |
| 1447 |
{
|
| 1448 |
return rectSelect;
|
| 1449 |
} |
| 1450 |
|
| 1451 |
/**
|
| 1452 |
* Sets if the selection should be rectangular.
|
| 1453 |
* @param overwrite True if the selection should be rectangular,
|
| 1454 |
* false otherwise.
|
| 1455 |
*/
|
| 1456 |
public final void setSelectionRectangular(boolean rectSelect) |
| 1457 |
{
|
| 1458 |
this.rectSelect = rectSelect;
|
| 1459 |
painter.invalidateSelectedLines(); |
| 1460 |
} |
| 1461 |
|
| 1462 |
/**
|
| 1463 |
* Returns the position of the highlighted bracket (the bracket
|
| 1464 |
* matching the one before the caret)
|
| 1465 |
*/
|
| 1466 |
public final int getBracketPosition() |
| 1467 |
{
|
| 1468 |
return bracketPosition;
|
| 1469 |
} |
| 1470 |
|
| 1471 |
/**
|
| 1472 |
* Returns the line of the highlighted bracket (the bracket
|
| 1473 |
* matching the one before the caret)
|
| 1474 |
*/
|
| 1475 |
public final int getBracketLine() |
| 1476 |
{
|
| 1477 |
return bracketLine;
|
| 1478 |
} |
| 1479 |
|
| 1480 |
/**
|
| 1481 |
* Adds a caret change listener to this text area.
|
| 1482 |
* @param listener The listener
|
| 1483 |
*/
|
| 1484 |
public final void addCaretListener(CaretListener listener) |
| 1485 |
{
|
| 1486 |
listenerList.add(CaretListener.class,listener);
|
| 1487 |
} |
| 1488 |
|
| 1489 |
/**
|
| 1490 |
* Removes a caret change listener from this text area.
|
| 1491 |
* @param listener The listener
|
| 1492 |
*/
|
| 1493 |
public final void removeCaretListener(CaretListener listener) |
| 1494 |
{
|
| 1495 |
listenerList.remove(CaretListener.class,listener);
|
| 1496 |
} |
| 1497 |
|
| 1498 |
/**
|
| 1499 |
* Deletes the selected text from the text area and places it
|
| 1500 |
* into the clipboard.
|
| 1501 |
*/
|
| 1502 |
public void cut() |
| 1503 |
{
|
| 1504 |
if(editable)
|
| 1505 |
{
|
| 1506 |
copy(); |
| 1507 |
setSelectedText("");
|
| 1508 |
} |
| 1509 |
} |
| 1510 |
|
| 1511 |
/**
|
| 1512 |
* Places the selected text into the clipboard.
|
| 1513 |
*/
|
| 1514 |
public void copy() |
| 1515 |
{
|
| 1516 |
if(selectionStart != selectionEnd)
|
| 1517 |
{
|
| 1518 |
Clipboard clipboard = getToolkit().getSystemClipboard();
|
| 1519 |
|
| 1520 |
String selection = getSelectedText();
|
| 1521 |
|
| 1522 |
int repeatCount = inputHandler.getRepeatCount();
|
| 1523 |
StringBuffer buf = new StringBuffer(); |
| 1524 |
for(int i = 0; i < repeatCount; i++) |
| 1525 |
buf.append(selection); |
| 1526 |
|
| 1527 |
clipboard.setContents(new StringSelection(buf.toString()),null); |
| 1528 |
} |
| 1529 |
} |
| 1530 |
|
| 1531 |
/**
|
| 1532 |
* Inserts the clipboard contents into the text.
|
| 1533 |
*/
|
| 1534 |
public void paste() |
| 1535 |
{
|
| 1536 |
if(editable)
|
| 1537 |
{
|
| 1538 |
Clipboard clipboard = getToolkit().getSystemClipboard();
|
| 1539 |
try
|
| 1540 |
{
|
| 1541 |
// The MacOS MRJ doesn't convert \r to \n,
|
| 1542 |
// so do it here
|
| 1543 |
String selection = ((String)clipboard |
| 1544 |
.getContents(this).getTransferData(
|
| 1545 |
DataFlavor.stringFlavor))
|
| 1546 |
.replace('\r','\n'); |
| 1547 |
|
| 1548 |
int repeatCount = inputHandler.getRepeatCount();
|
| 1549 |
StringBuffer buf = new StringBuffer(); |
| 1550 |
for(int i = 0; i < repeatCount; i++) |
| 1551 |
buf.append(selection); |
| 1552 |
selection = buf.toString(); |
| 1553 |
setSelectedText(selection); |
| 1554 |
} |
| 1555 |
catch(Exception e) |
| 1556 |
{
|
| 1557 |
getToolkit().beep(); |
| 1558 |
System.err.println("Clipboard does not" |
| 1559 |
+ " contain a string");
|
| 1560 |
} |
| 1561 |
} |
| 1562 |
} |
| 1563 |
|
| 1564 |
/**
|
| 1565 |
* Called by the AWT when this component is removed from it's parent.
|
| 1566 |
* This stops clears the currently focused component.
|
| 1567 |
*/
|
| 1568 |
public void removeNotify() |
| 1569 |
{
|
| 1570 |
super.removeNotify();
|
| 1571 |
if(focusedComponent == this) |
| 1572 |
focusedComponent = null;
|
| 1573 |
} |
| 1574 |
|
| 1575 |
/**
|
| 1576 |
* Forwards key events directly to the input handler.
|
| 1577 |
* This is slightly faster than using a KeyListener
|
| 1578 |
* because some Swing overhead is avoided.
|
| 1579 |
*/
|
| 1580 |
public void processKeyEvent(KeyEvent evt) |
| 1581 |
{
|
| 1582 |
if(inputHandler == null) |
| 1583 |
return;
|
| 1584 |
switch(evt.getID())
|
| 1585 |
{
|
| 1586 |
case KeyEvent.KEY_TYPED: |
| 1587 |
inputHandler.keyTyped(evt); |
| 1588 |
break;
|
| 1589 |
case KeyEvent.KEY_PRESSED: |
| 1590 |
inputHandler.keyPressed(evt); |
| 1591 |
break;
|
| 1592 |
case KeyEvent.KEY_RELEASED: |
| 1593 |
inputHandler.keyReleased(evt); |
| 1594 |
break;
|
| 1595 |
} |
| 1596 |
} |
| 1597 |
|
| 1598 |
// protected members
|
| 1599 |
protected static String CENTER = "center"; |
| 1600 |
protected static String RIGHT = "right"; |
| 1601 |
protected static String BOTTOM = "bottom"; |
| 1602 |
|
| 1603 |
protected static JEditTextArea focusedComponent; |
| 1604 |
protected static Timer caretTimer; |
| 1605 |
|
| 1606 |
protected TextAreaPainter painter;
|
| 1607 |
|
| 1608 |
protected JPopupMenu popup; |
| 1609 |
|
| 1610 |
protected EventListenerList listenerList; |
| 1611 |
protected MutableCaretEvent caretEvent;
|
| 1612 |
|
| 1613 |
protected boolean caretBlinks; |
| 1614 |
protected boolean caretVisible; |
| 1615 |
protected boolean blink; |
| 1616 |
|
| 1617 |
protected boolean editable; |
| 1618 |
|
| 1619 |
protected int firstLine; |
| 1620 |
protected int visibleLines; |
| 1621 |
protected int electricScroll; |
| 1622 |
|
| 1623 |
protected int horizontalOffset; |
| 1624 |
|
| 1625 |
protected JScrollBar vertical; |
| 1626 |
protected JScrollBar horizontal; |
| 1627 |
protected boolean scrollBarsInitialized; |
| 1628 |
|
| 1629 |
protected InputHandler inputHandler;
|
| 1630 |
protected SyntaxDocument document;
|
| 1631 |
protected DocumentHandler documentHandler;
|
| 1632 |
|
| 1633 |
protected Segment lineSegment; |
| 1634 |
|
| 1635 |
protected int selectionStart; |
| 1636 |
protected int selectionStartLine; |
| 1637 |
protected int selectionEnd; |
| 1638 |
protected int selectionEndLine; |
| 1639 |
protected boolean biasLeft; |
| 1640 |
|
| 1641 |
protected int bracketPosition; |
| 1642 |
protected int bracketLine; |
| 1643 |
|
| 1644 |
protected int magicCaret; |
| 1645 |
protected boolean overwrite; |
| 1646 |
protected boolean rectSelect; |
| 1647 |
|
| 1648 |
protected void fireCaretEvent() |
| 1649 |
{
|
| 1650 |
Object[] listeners = listenerList.getListenerList(); |
| 1651 |
for(int i = listeners.length - 2; i >= 0; i--) |
| 1652 |
{
|
| 1653 |
if(listeners[i] == CaretListener.class) |
| 1654 |
{
|
| 1655 |
((CaretListener)listeners[i+1]).caretUpdate(caretEvent); |
| 1656 |
} |
| 1657 |
} |
| 1658 |
super.validate();
|
| 1659 |
} |
| 1660 |
|
| 1661 |
protected void updateBracketHighlight(int newCaretPosition) |
| 1662 |
{
|
| 1663 |
if(newCaretPosition == 0) |
| 1664 |
{
|
| 1665 |
bracketPosition = bracketLine = -1;
|
| 1666 |
return;
|
| 1667 |
} |
| 1668 |
|
| 1669 |
try
|
| 1670 |
{
|
| 1671 |
int offset = TextUtilities.findMatchingBracket(
|
| 1672 |
document,newCaretPosition - 1);
|
| 1673 |
if(offset != -1) |
| 1674 |
{
|
| 1675 |
bracketLine = getLineOfOffset(offset); |
| 1676 |
bracketPosition = offset - getLineStartOffset(bracketLine); |
| 1677 |
return;
|
| 1678 |
} |
| 1679 |
} |
| 1680 |
catch(BadLocationException bl) |
| 1681 |
{
|
| 1682 |
bl.printStackTrace(); |
| 1683 |
} |
| 1684 |
|
| 1685 |
bracketLine = bracketPosition = -1;
|
| 1686 |
} |
| 1687 |
|
| 1688 |
protected void documentChanged(DocumentEvent evt) |
| 1689 |
{
|
| 1690 |
DocumentEvent.ElementChange ch = evt.getChange(
|
| 1691 |
document.getDefaultRootElement()); |
| 1692 |
|
| 1693 |
int count;
|
| 1694 |
if(ch == null) |
| 1695 |
count = 0;
|
| 1696 |
else
|
| 1697 |
count = ch.getChildrenAdded().length - |
| 1698 |
ch.getChildrenRemoved().length; |
| 1699 |
|
| 1700 |
int line = getLineOfOffset(evt.getOffset());
|
| 1701 |
if(count == 0) |
| 1702 |
{
|
| 1703 |
painter.invalidateLine(line); |
| 1704 |
} |
| 1705 |
// do magic stuff
|
| 1706 |
else if(line < firstLine) |
| 1707 |
{
|
| 1708 |
setFirstLine(firstLine + count); |
| 1709 |
} |
| 1710 |
// end of magic stuff
|
| 1711 |
else
|
| 1712 |
{
|
| 1713 |
painter.invalidateLineRange(line,firstLine + visibleLines); |
| 1714 |
updateScrollBars(); |
| 1715 |
} |
| 1716 |
} |
| 1717 |
|
| 1718 |
class ScrollLayout implements LayoutManager |
| 1719 |
{
|
| 1720 |
public void addLayoutComponent(String name, Component comp) |
| 1721 |
{
|
| 1722 |
if(name.equals(CENTER))
|
| 1723 |
center = comp; |
| 1724 |
else if(name.equals(RIGHT)) |
| 1725 |
right = comp; |
| 1726 |
else if(name.equals(BOTTOM)) |
| 1727 |
bottom = comp; |
| 1728 |
else if(name.equals(LEFT_OF_SCROLLBAR)) |
| 1729 |
leftOfScrollBar.addElement(comp); |
| 1730 |
} |
| 1731 |
|
| 1732 |
public void removeLayoutComponent(Component comp) |
| 1733 |
{
|
| 1734 |
if(center == comp)
|
| 1735 |
center = null;
|
| 1736 |
if(right == comp)
|
| 1737 |
right = null;
|
| 1738 |
if(bottom == comp)
|
| 1739 |
bottom = null;
|
| 1740 |
else
|
| 1741 |
leftOfScrollBar.removeElement(comp); |
| 1742 |
} |
| 1743 |
|
| 1744 |
public Dimension preferredLayoutSize(Container parent) |
| 1745 |
{
|
| 1746 |
Dimension dim = new Dimension(); |
| 1747 |
Insets insets = getInsets();
|
| 1748 |
dim.width = insets.left + insets.right; |
| 1749 |
dim.height = insets.top + insets.bottom; |
| 1750 |
|
| 1751 |
Dimension centerPref = center.getPreferredSize();
|
| 1752 |
dim.width += centerPref.width; |
| 1753 |
dim.height += centerPref.height; |
| 1754 |
Dimension rightPref = right.getPreferredSize();
|
| 1755 |
dim.width += rightPref.width; |
| 1756 |
Dimension bottomPref = bottom.getPreferredSize();
|
| 1757 |
dim.height += bottomPref.height; |
| 1758 |
|
| 1759 |
return dim;
|
| 1760 |
} |
| 1761 |
|
| 1762 |
public Dimension minimumLayoutSize(Container parent) |
| 1763 |
{
|
| 1764 |
Dimension dim = new Dimension(); |
| 1765 |
Insets insets = getInsets();
|
| 1766 |
dim.width = insets.left + insets.right; |
| 1767 |
dim.height = insets.top + insets.bottom; |
| 1768 |
|
| 1769 |
Dimension centerPref = center.getMinimumSize();
|
| 1770 |
dim.width += centerPref.width; |
| 1771 |
dim.height += centerPref.height; |
| 1772 |
Dimension rightPref = right.getMinimumSize();
|
| 1773 |
dim.width += rightPref.width; |
| 1774 |
Dimension bottomPref = bottom.getMinimumSize();
|
| 1775 |
dim.height += bottomPref.height; |
| 1776 |
|
| 1777 |
return dim;
|
| 1778 |
} |
| 1779 |
|
| 1780 |
public void layoutContainer(Container parent) |
| 1781 |
{
|
| 1782 |
Dimension size = parent.getSize();
|
| 1783 |
Insets insets = parent.getInsets();
|
| 1784 |
int itop = insets.top;
|
| 1785 |
int ileft = insets.left;
|
| 1786 |
int ibottom = insets.bottom;
|
| 1787 |
int iright = insets.right;
|
| 1788 |
|
| 1789 |
int rightWidth = right.getPreferredSize().width;
|
| 1790 |
int bottomHeight = bottom.getPreferredSize().height;
|
| 1791 |
int centerWidth = size.width - rightWidth - ileft - iright;
|
| 1792 |
int centerHeight = size.height - bottomHeight - itop - ibottom;
|
| 1793 |
|
| 1794 |
center.setBounds( |
| 1795 |
ileft, |
| 1796 |
itop, |
| 1797 |
centerWidth, |
| 1798 |
centerHeight); |
| 1799 |
|
| 1800 |
right.setBounds( |
| 1801 |
ileft + centerWidth, |
| 1802 |
itop, |
| 1803 |
rightWidth, |
| 1804 |
centerHeight); |
| 1805 |
|
| 1806 |
// Lay out all status components, in order
|
| 1807 |
Enumeration status = leftOfScrollBar.elements();
|
| 1808 |
while(status.hasMoreElements())
|
| 1809 |
{
|
| 1810 |
Component comp = (Component)status.nextElement(); |
| 1811 |
Dimension dim = comp.getPreferredSize();
|
| 1812 |
comp.setBounds(ileft, |
| 1813 |
itop + centerHeight, |
| 1814 |
dim.width, |
| 1815 |
bottomHeight); |
| 1816 |
ileft += dim.width; |
| 1817 |
} |
| 1818 |
|
| 1819 |
bottom.setBounds( |
| 1820 |
ileft, |
| 1821 |
itop + centerHeight, |
| 1822 |
size.width - rightWidth - ileft - iright, |
| 1823 |
bottomHeight); |
| 1824 |
} |
| 1825 |
|
| 1826 |
// private members
|
| 1827 |
private Component center; |
| 1828 |
private Component right; |
| 1829 |
private Component bottom; |
| 1830 |
private Vector leftOfScrollBar = new Vector(); |
| 1831 |
} |
| 1832 |
|
| 1833 |
static class CaretBlinker implements ActionListener |
| 1834 |
{
|
| 1835 |
public void actionPerformed(ActionEvent evt) |
| 1836 |
{
|
| 1837 |
if(focusedComponent != null |
| 1838 |
&& focusedComponent.hasFocus()) |
| 1839 |
focusedComponent.blinkCaret(); |
| 1840 |
} |
| 1841 |
} |
| 1842 |
|
| 1843 |
class MutableCaretEvent extends CaretEvent |
| 1844 |
{
|
| 1845 |
MutableCaretEvent() |
| 1846 |
{
|
| 1847 |
super(JEditTextArea.this);
|
| 1848 |
} |
| 1849 |
|
| 1850 |
public int getDot() |
| 1851 |
{
|
| 1852 |
return getCaretPosition();
|
| 1853 |
} |
| 1854 |
|
| 1855 |
public int getMark() |
| 1856 |
{
|
| 1857 |
return getMarkPosition();
|
| 1858 |
} |
| 1859 |
} |
| 1860 |
|
| 1861 |
class AdjustHandler implements AdjustmentListener |
| 1862 |
{
|
| 1863 |
public void adjustmentValueChanged(final AdjustmentEvent evt) |
| 1864 |
{
|
| 1865 |
if(!scrollBarsInitialized)
|
| 1866 |
return;
|
| 1867 |
|
| 1868 |
// If this is not done, mousePressed events accumilate
|
| 1869 |
// and the result is that scrolling doesn't stop after
|
| 1870 |
// the mouse is released
|
| 1871 |
SwingUtilities.invokeLater(new Runnable() { |
| 1872 |
public void run() |
| 1873 |
{
|
| 1874 |
if(evt.getAdjustable() == vertical)
|
| 1875 |
setFirstLine(vertical.getValue()); |
| 1876 |
else
|
| 1877 |
setHorizontalOffset(-horizontal.getValue()); |
| 1878 |
} |
| 1879 |
}); |
| 1880 |
} |
| 1881 |
} |
| 1882 |
|
| 1883 |
class ComponentHandler extends ComponentAdapter |
| 1884 |
{
|
| 1885 |
public void componentResized(ComponentEvent evt) |
| 1886 |
{
|
| 1887 |
recalculateVisibleLines(); |
| 1888 |
scrollBarsInitialized = true;
|
| 1889 |
} |
| 1890 |
} |
| 1891 |
|
| 1892 |
class DocumentHandler implements DocumentListener |
| 1893 |
{
|
| 1894 |
public void insertUpdate(DocumentEvent evt) |
| 1895 |
{
|
| 1896 |
documentChanged(evt); |
| 1897 |
|
| 1898 |
int offset = evt.getOffset();
|
| 1899 |
int length = evt.getLength();
|
| 1900 |
|
| 1901 |
int newStart;
|
| 1902 |
int newEnd;
|
| 1903 |
|
| 1904 |
if(selectionStart > offset || (selectionStart
|
| 1905 |
== selectionEnd && selectionStart == offset)) |
| 1906 |
newStart = selectionStart + length; |
| 1907 |
else
|
| 1908 |
newStart = selectionStart; |
| 1909 |
|
| 1910 |
if(selectionEnd >= offset)
|
| 1911 |
newEnd = selectionEnd + length; |
| 1912 |
else
|
| 1913 |
newEnd = selectionEnd; |
| 1914 |
|
| 1915 |
select(newStart,newEnd); |
| 1916 |
} |
| 1917 |
|
| 1918 |
public void removeUpdate(DocumentEvent evt) |
| 1919 |
{
|
| 1920 |
documentChanged(evt); |
| 1921 |
|
| 1922 |
int offset = evt.getOffset();
|
| 1923 |
int length = evt.getLength();
|
| 1924 |
|
| 1925 |
int newStart;
|
| 1926 |
int newEnd;
|
| 1927 |
|
| 1928 |
if(selectionStart > offset)
|
| 1929 |
{
|
| 1930 |
if(selectionStart > offset + length)
|
| 1931 |
newStart = selectionStart - length; |
| 1932 |
else
|
| 1933 |
newStart = offset; |
| 1934 |
} |
| 1935 |
else
|
| 1936 |
newStart = selectionStart; |
| 1937 |
|
| 1938 |
if(selectionEnd > offset)
|
| 1939 |
{
|
| 1940 |
if(selectionEnd > offset + length)
|
| 1941 |
newEnd = selectionEnd - length; |
| 1942 |
else
|
| 1943 |
newEnd = offset; |
| 1944 |
} |
| 1945 |
else
|
| 1946 |
newEnd = selectionEnd; |
| 1947 |
|
| 1948 |
select(newStart,newEnd); |
| 1949 |
} |
| 1950 |
|
| 1951 |
public void changedUpdate(DocumentEvent evt) |
| 1952 |
{
|
| 1953 |
} |
| 1954 |
} |
| 1955 |
|
| 1956 |
class DragHandler implements MouseMotionListener |
| 1957 |
{
|
| 1958 |
public void mouseDragged(MouseEvent evt) |
| 1959 |
{
|
| 1960 |
if(popup != null && popup.isVisible()) |
| 1961 |
return;
|
| 1962 |
|
| 1963 |
setSelectionRectangular((evt.getModifiers() |
| 1964 |
& InputEvent.CTRL_MASK) != 0); |
| 1965 |
select(getMarkPosition(),xyToOffset(evt.getX(),evt.getY())); |
| 1966 |
} |
| 1967 |
|
| 1968 |
public void mouseMoved(MouseEvent evt) {} |
| 1969 |
} |
| 1970 |
|
| 1971 |
class FocusHandler implements FocusListener |
| 1972 |
{
|
| 1973 |
public void focusGained(FocusEvent evt) |
| 1974 |
{
|
| 1975 |
setCaretVisible(true);
|
| 1976 |
focusedComponent = JEditTextArea.this; |
| 1977 |
} |
| 1978 |
|
| 1979 |
public void focusLost(FocusEvent evt) |
| 1980 |
{
|
| 1981 |
setCaretVisible(false);
|
| 1982 |
focusedComponent = null;
|
| 1983 |
} |
| 1984 |
} |
| 1985 |
|
| 1986 |
class MouseHandler extends MouseAdapter |
| 1987 |
{
|
| 1988 |
public void mousePressed(MouseEvent evt) |
| 1989 |
{
|
| 1990 |
requestFocus(); |
| 1991 |
|
| 1992 |
// Focus events not fired sometimes?
|
| 1993 |
setCaretVisible(true);
|
| 1994 |
focusedComponent = JEditTextArea.this; |
| 1995 |
|
| 1996 |
if((evt.getModifiers() & InputEvent.BUTTON3_MASK) != 0 |
| 1997 |
&& popup != null)
|
| 1998 |
{
|
| 1999 |
popup.show(painter,evt.getX(),evt.getY()); |
| 2000 |
return;
|
| 2001 |
} |
| 2002 |
|
| 2003 |
int line = yToLine(evt.getY());
|
| 2004 |
int offset = xToOffset(line,evt.getX());
|
| 2005 |
int dot = getLineStartOffset(line) + offset;
|
| 2006 |
|
| 2007 |
switch(evt.getClickCount())
|
| 2008 |
{
|
| 2009 |
case 1: |
| 2010 |
doSingleClick(evt,line,offset,dot); |
| 2011 |
break;
|
| 2012 |
case 2: |
| 2013 |
// It uses the bracket matching stuff, so
|
| 2014 |
// it can throw a BLE
|
| 2015 |
try
|
| 2016 |
{
|
| 2017 |
doDoubleClick(evt,line,offset,dot); |
| 2018 |
} |
| 2019 |
catch(BadLocationException bl) |
| 2020 |
{
|
| 2021 |
bl.printStackTrace(); |
| 2022 |
} |
| 2023 |
break;
|
| 2024 |
case 3: |
| 2025 |
doTripleClick(evt,line,offset,dot); |
| 2026 |
break;
|
| 2027 |
} |
| 2028 |
} |
| 2029 |
|
| 2030 |
private void doSingleClick(MouseEvent evt, int line, |
| 2031 |
int offset, int dot) |
| 2032 |
{
|
| 2033 |
if((evt.getModifiers() & InputEvent.SHIFT_MASK) != 0) |
| 2034 |
{
|
| 2035 |
rectSelect = (evt.getModifiers() & InputEvent.CTRL_MASK) != 0; |
| 2036 |
select(getMarkPosition(),dot); |
| 2037 |
} |
| 2038 |
else
|
| 2039 |
setCaretPosition(dot); |
| 2040 |
} |
| 2041 |
|
| 2042 |
private void doDoubleClick(MouseEvent evt, int line, |
| 2043 |
int offset, int dot) throws BadLocationException |
| 2044 |
{
|
| 2045 |
// Ignore empty lines
|
| 2046 |
if(getLineLength(line) == 0) |
| 2047 |
return;
|
| 2048 |
|
| 2049 |
try
|
| 2050 |
{
|
| 2051 |
int bracket = TextUtilities.findMatchingBracket(
|
| 2052 |
document,Math.max(0,dot - 1)); |
| 2053 |
if(bracket != -1) |
| 2054 |
{
|
| 2055 |
int mark = getMarkPosition();
|
| 2056 |
// Hack
|
| 2057 |
if(bracket > mark)
|
| 2058 |
{
|
| 2059 |
bracket++; |
| 2060 |
mark--; |
| 2061 |
} |
| 2062 |
select(mark,bracket); |
| 2063 |
return;
|
| 2064 |
} |
| 2065 |
} |
| 2066 |
catch(BadLocationException bl) |
| 2067 |
{
|
| 2068 |
bl.printStackTrace(); |
| 2069 |
} |
| 2070 |
|
| 2071 |
// Ok, it's not a bracket... select the word
|
| 2072 |
String lineText = getLineText(line);
|
| 2073 |
char ch = lineText.charAt(Math.max(0,offset - 1)); |
| 2074 |
|
| 2075 |
String noWordSep = (String)document.getProperty("noWordSep"); |
| 2076 |
if(noWordSep == null) |
| 2077 |
noWordSep = "";
|
| 2078 |
|
| 2079 |
// If the user clicked on a non-letter char,
|
| 2080 |
// we select the surrounding non-letters
|
| 2081 |
boolean selectNoLetter = (!Character |
| 2082 |
.isLetterOrDigit(ch) |
| 2083 |
&& noWordSep.indexOf(ch) == -1);
|
| 2084 |
|
| 2085 |
int wordStart = 0; |
| 2086 |
|
| 2087 |
for(int i = offset - 1; i >= 0; i--) |
| 2088 |
{
|
| 2089 |
ch = lineText.charAt(i); |
| 2090 |
if(selectNoLetter ^ (!Character |
| 2091 |
.isLetterOrDigit(ch) && |
| 2092 |
noWordSep.indexOf(ch) == -1))
|
| 2093 |
{
|
| 2094 |
wordStart = i + 1;
|
| 2095 |
break;
|
| 2096 |
} |
| 2097 |
} |
| 2098 |
|
| 2099 |
int wordEnd = lineText.length();
|
| 2100 |
for(int i = offset; i < lineText.length(); i++) |
| 2101 |
{
|
| 2102 |
ch = lineText.charAt(i); |
| 2103 |
if(selectNoLetter ^ (!Character |
| 2104 |
.isLetterOrDigit(ch) && |
| 2105 |
noWordSep.indexOf(ch) == -1))
|
| 2106 |
{
|
| 2107 |
wordEnd = i; |
| 2108 |
break;
|
| 2109 |
} |
| 2110 |
} |
| 2111 |
|
| 2112 |
int lineStart = getLineStartOffset(line);
|
| 2113 |
select(lineStart + wordStart,lineStart + wordEnd); |
| 2114 |
|
| 2115 |
/*
|
| 2116 |
String lineText = getLineText(line);
|
| 2117 |
String noWordSep = (String)document.getProperty("noWordSep");
|
| 2118 |
int wordStart = TextUtilities.findWordStart(lineText,offset,noWordSep);
|
| 2119 |
int wordEnd = TextUtilities.findWordEnd(lineText,offset,noWordSep);
|
| 2120 |
|
| 2121 |
int lineStart = getLineStartOffset(line);
|
| 2122 |
select(lineStart + wordStart,lineStart + wordEnd);
|
| 2123 |
*/
|
| 2124 |
} |
| 2125 |
|
| 2126 |
private void doTripleClick(MouseEvent evt, int line, |
| 2127 |
int offset, int dot) |
| 2128 |
{
|
| 2129 |
select(getLineStartOffset(line),getLineEndOffset(line)-1);
|
| 2130 |
} |
| 2131 |
} |
| 2132 |
|
| 2133 |
class CaretUndo extends AbstractUndoableEdit |
| 2134 |
{
|
| 2135 |
private int start; |
| 2136 |
private int end; |
| 2137 |
|
| 2138 |
CaretUndo(int start, int end) |
| 2139 |
{
|
| 2140 |
this.start = start;
|
| 2141 |
this.end = end;
|
| 2142 |
} |
| 2143 |
|
| 2144 |
public boolean isSignificant() |
| 2145 |
{
|
| 2146 |
return false; |
| 2147 |
} |
| 2148 |
|
| 2149 |
public String getPresentationName() |
| 2150 |
{
|
| 2151 |
return "caret move"; |
| 2152 |
} |
| 2153 |
|
| 2154 |
public void undo() throws CannotUndoException |
| 2155 |
{
|
| 2156 |
super.undo();
|
| 2157 |
|
| 2158 |
select(start,end); |
| 2159 |
} |
| 2160 |
|
| 2161 |
public void redo() throws CannotRedoException |
| 2162 |
{
|
| 2163 |
super.redo();
|
| 2164 |
|
| 2165 |
select(start,end); |
| 2166 |
} |
| 2167 |
|
| 2168 |
public boolean addEdit(UndoableEdit edit) |
| 2169 |
{
|
| 2170 |
if(edit instanceof CaretUndo) |
| 2171 |
{
|
| 2172 |
CaretUndo cedit = (CaretUndo)edit; |
| 2173 |
start = cedit.start; |
| 2174 |
end = cedit.end; |
| 2175 |
cedit.die(); |
| 2176 |
|
| 2177 |
return true; |
| 2178 |
} |
| 2179 |
else
|
| 2180 |
return false; |
| 2181 |
} |
| 2182 |
} |
| 2183 |
|
| 2184 |
static
|
| 2185 |
{
|
| 2186 |
caretTimer = new Timer(500,new CaretBlinker()); |
| 2187 |
caretTimer.setInitialDelay(500);
|
| 2188 |
caretTimer.start(); |
| 2189 |
} |
| 2190 |
} |