jdk/src/solaris/classes/sun/awt/motif/MTextAreaPeer.java - platform/libcore - Git at Google

 /*
  * Copyright 1995-2003 Sun Microsystems, Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Sun designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Sun in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  */

 package sun.awt.motif;

 import java.awt.*;
 import java.awt.peer.*;
 import java.awt.event.TextEvent;
 import java.awt.event.MouseEvent;
 import java.awt.event.MouseWheelEvent;
 import java.awt.datatransfer.*;
 import java.io.BufferedReader;
 import java.io.StringReader;
 import java.io.IOException;
 import java.util.Vector;
 import java.awt.im.InputMethodRequests;


 public class MTextAreaPeer extends MComponentPeer implements TextAreaPeer {
     native void pCreate(MComponentPeer parent);

     private boolean firstChangeSkipped;

     /**
      * Initialize JNI field and method IDs
      */
     private static native void initIDs();

     static {
         initIDs();
     }

     void create(MComponentPeer parent) {
         firstChangeSkipped = false;
         pCreate(parent);
     }

     void initialize() {
         int start, end;

         TextArea txt = (TextArea)target;
         String  text;

         if ((text = txt.getText()) != null) {
             setText(text);
         }

         start = txt.getSelectionStart();
         end = txt.getSelectionEnd();

         if (end > start) {
             select(start, end);
         } else {
             setCaretPosition(start);
         }

         super.pSetScrollbarBackground(getParent_NoClientCode(target).getBackground());

         if (!target.isBackgroundSet()) {
             // This is a way to set the background color of the TextArea
             // without calling setBackground - go through native C code
             setTargetBackground(SystemColor.text);
         }
         if (!target.isForegroundSet()) {
             target.setForeground(SystemColor.textText);
         }

         setEditable(txt.isEditable());

 //      oldSelectionStart = -1; // accessibility support
 //      oldSelectionEnd = -1;   // accessibility support

         super.initialize();
     }

     public MTextAreaPeer(TextArea target) {
         super(target);
     }

     public void setEditable(boolean editable) {
         pSetEditable(editable);

         /* 4136955 - Calling setBackground() here works around an Xt
          * bug by forcing Xt to flush an internal widget cache
          */
         setBackground(target.getBackground());
     }
     public void setBackground(Color c) {
         setTextBackground(c);
     }
     public void setForeground(Color c) {
         pSetInnerForeground(c);
     }

     native int getExtraWidth();
     native int getExtraHeight();
     public native void setTextBackground(Color c);
     public native void pSetEditable(boolean e);
     public native void select(int selStart, int selEnd);
     public native int getSelectionStart();
     public native int getSelectionEnd();
     public native void setText(String txt);
     public native String getText();
     public native void insert(String txt, int pos);
     public native void replaceRange(String txt, int start, int end);
     public native void setFont(Font f);
     public native void setCaretPosition(int pos);
     public native int getCaretPosition();
     public native void pSetCursor(Cursor c);
     native void pShow2();
     native void pMakeCursorVisible();


     public Dimension getMinimumSize() {
         return getMinimumSize(10, 60);
     }
     public Dimension getPreferredSize(int rows, int cols) {
         return getMinimumSize(rows, cols);
     }
     public Dimension getMinimumSize(int rows, int cols) {
         FontMetrics fm = getFontMetrics(target.getFont());

         /* Calculate proper size for text area plus scrollbars.
          *   - Motif allows NO leading in its text areas ...
          *   - extra width and height counts everything outside the
          *     usable text space.
          * (bug 4103248, 4120310):
          *   - Motif uses maxAscent + maxDescent, not ascent + descent.
          */
         int colWidth = fm.charWidth('0');
         int rowHeight = fm.getMaxAscent() + fm.getMaxDescent();
         return new Dimension(cols * colWidth + getExtraWidth(),
                              rows * rowHeight + getExtraHeight());
     }
     public boolean isFocusable() {
         return true;
     }

     // Called from native widget when paste key is pressed and we
     // already own the selection (prevents Motif from hanging while
     // waiting for the selection)
     //
     public void pasteFromClipboard() {
         Clipboard clipboard = target.getToolkit().getSystemClipboard();

         Transferable content = clipboard.getContents(this);
         if (content != null) {
             try {
                 String data = (String)(content.getTransferData(DataFlavor.stringFlavor));
                 // fix for 4401853: to clear TextArea selection if null is pasted
                 data = (data == null ? "" : data);
                 replaceRange(data, getSelectionStart(), getSelectionEnd());

             } catch (Exception e) {
             }
         }
     }

     /*
      * Print the native component by rendering the Motif look ourselves.
      * ToDo(aim): needs to query native motif for more accurate size and
      * color information, the top/left text offsets, and selected text.
      */
     static final int MARGIN = 2;
     static final int BORDER = 1;
     static final int SCROLLBAR = 16;
     int fontHeight;
     int fontAscent;
     int fontLeading;
     int topLine = 0;
     int numLines = 0;
     int textLength = 0;
     Vector lines;
     int selStart = 0;
     int selEnd = 0;
     int movedRight = 0;

     // the following vars are assigned in print() method
     transient boolean hscrollbar;
     transient boolean vscrollbar;

     public void print(Graphics g) {
         TextArea area = (TextArea)target;
         Dimension d = area.size();
         Color bg = area.getBackground();
         Color fg = area.getForeground();
         FontMetrics fm = getFontMetrics(area.getFont());
         int vmin, vmax, vval, vvis;
         int hmin, hmax, hval, hvis;
         int max = 0;

         /*
           Doesn't work right yet.
         selStart = area.getSelectionStart();
         selEnd = area.getSelectionEnd();
         */

         // Figure out number of lines and max line length
         String text = area.getText();
         textLength = text.length();
         BufferedReader is = new BufferedReader(new StringReader(text));
         String line;
         int pos = 0;
         lines = new Vector();
         int sv = ((TextArea)target).getScrollbarVisibility();
         vscrollbar = (sv == TextArea.SCROLLBARS_BOTH ||
                 sv == TextArea.SCROLLBARS_VERTICAL_ONLY);
         hscrollbar = (sv == TextArea.SCROLLBARS_BOTH ||
                 sv == TextArea.SCROLLBARS_HORIZONTAL_ONLY);
         boolean wrap = !hscrollbar;
         int w = d.width - (vscrollbar ? SCROLLBAR : 0);
         int h = d.height - (hscrollbar ? SCROLLBAR : 0);

         try {
             numLines = 0;
             while((line = is.readLine()) != null) {
                 int len = fm.stringWidth(line);
                 if (len > w && wrap) {
                    // need to do line wrapping
                    int start = 0;
                    int end = 0;
                    int string_length = line.length();
                    while (true) {
                        int line_width = 0;
                        end = start + 1; // at least one character per line
                        while (end < string_length) {
                                char c = line.charAt(end);
                                int cw = fm.charWidth(c);
                                if (line_width + cw + 10 > w) // +10?
                                        break;
                                line_width += cw;
                                end++;
                        }
                        // form a line from start to end (not including end)
                        String substr = line.substring(start, end);
                        // System.out.println("wrap line: " + substr);
                        TextLine tline = new TextLine();
                        tline.text = substr;
                        tline.pos = pos + start;
                        lines.addElement(tline);
                        start = end;
                        max = Math.max(max, len);
                        numLines ++;
                        if (end == string_length) {
                            // we have processed the whole string
                            pos += line.length() + 1; // +1 for the ending \n ?
                            break;
                        }
                    }
                 } else {
                 TextLine tline = new TextLine();
                 tline.text = line;
                 tline.pos = pos;
                 lines.addElement(tline);
                 pos += line.length() + 1;

                 max = Math.max(max, len);
                 numLines++;
                 }
             }
             is.close();

         } catch (IOException e) {
         }


         fontHeight = fm.getHeight();
         fontAscent = fm.getAscent();
         fontLeading = fm.getLeading();

         hmin = vmin = 0;

         vvis = linesInWindow(true);
         vmax = Math.max(numLines - vvis, 0);
         vval = 0;

         hvis = w - (2 * MARGIN);
         hmax = Math.max(max - hvis, 0);
         hval = 0;

         g.setColor(bg);
         g.fillRect(BORDER, BORDER, w, h);
         if (vscrollbar)
         {
             int sbh = d.height - (hscrollbar ? SCROLLBAR : 0);
             g.fillRect(d.width - SCROLLBAR - 3, 1, SCROLLBAR - 3, sbh - 1);
             Graphics ng = g.create();
             try {
                 ng.translate(d.width - (SCROLLBAR - 2), 0);
                 drawScrollbar(ng, bg, SCROLLBAR - 2, sbh,
                               vmin, vmax, vval, vvis, false);
             } finally {
                 ng.dispose();
             }
         }
         if (hscrollbar)
         {
             int sbw = d.width - (vscrollbar ? SCROLLBAR : 0);
             g.fillRect(1, d.height - SCROLLBAR - 3, sbw - 1, SCROLLBAR - 3);
             Graphics ng = g.create();
             try {
                 ng.translate(0, d.height - (SCROLLBAR - 2));
                 drawScrollbar(ng, bg, SCROLLBAR - 2, sbw,
                               hmin, hmax, hval, hvis, true);
             } finally {
                 ng.dispose();
             }
         }

         draw3DRect(g, bg, 0, 0, w - 1, h - 1, false);

         if (text != null) {
             int l = linesInWindow(true);
             h = d.height - ((2 * MARGIN) + SCROLLBAR);
             int e = Math.min(numLines - 1, (topLine + l) - 1);
             paintLines(g, bg, fg, topLine, e);
         }


         target.print(g);
     }

     int linesInWindow(boolean horizScrollbar) {
         Dimension d = target.size();
         int htotal = d.height - ((2 * MARGIN) + (horizScrollbar? SCROLLBAR : 0));
         return htotal / fontHeight;
     }

     void paintLines(Graphics g, Color bg, Color fg, int s, int e) {
         Dimension d = target.size();
         int w = d.width - ((2 * BORDER) + (vscrollbar ? SCROLLBAR : 0));
         int h = d.height - ((2 * BORDER) + (hscrollbar ? SCROLLBAR : 0));
         int lm = linesInWindow(true) + topLine;
         s = Math.max(topLine, s);
         e = Math.min(e, lm - 1);
         Graphics ng = g.create();
         try {
             ng.clipRect(BORDER + MARGIN, MARGIN + BORDER, w - (2*MARGIN),
                         h - (2*MARGIN));
             ng.setFont(target.getFont());
             for (int i = s ; i <= e; i++) {
                 paintLine(ng, bg, fg, i);
             }
         } finally {
             ng.dispose();
         }
     }

     void paintLine(Graphics g, Color bg, Color fg, int lnr) {
         Dimension d = target.size();
         int l = linesInWindow(true);

         if((lnr < topLine) || (lnr >= l + topLine)) {
             return;
         }
         int w = d.width - ((2 * BORDER) + (hscrollbar ? SCROLLBAR : 0));
         int y = MARGIN + fontLeading + ((lnr - topLine) * fontHeight);
         String text = ((TextLine)lines.elementAt(lnr)).text;
         int len = text.length();

         if (lnr > numLines - 1) {
             g.setColor(bg);
             g.fillRect(BORDER, y - fontLeading, w, fontHeight);
             return;
         }
         int s = 0;
         int e = (lnr < numLines - 1) ? len : textLength;
         int xs = pos2x(selStart) - movedRight;
         int xe = pos2x(selEnd) - movedRight;

         Color highlight = bg.brighter();
         if ((selStart < s) && (selEnd > e)) {
             g.setColor(highlight);
             g.fillRect(BORDER, y - fontLeading, w, fontHeight);
         } else {
             g.setColor(bg);
             g.fillRect(BORDER, y - fontLeading, w, fontHeight);

             if ((selStart >= s) && (selStart <= e)) {
                 g.setColor(highlight);

                 if (selEnd > e) {
                     g.fillRect(xs, y - fontLeading, (w + BORDER) - xs, fontHeight);
                 } else if (selStart == selEnd) {
                   //g.fillRect(xs, y - fontLeading, 1, fontHeight);
                 } else {
                     g.fillRect(xs, y - fontLeading, xe - xs, fontHeight);
                 }
             } else if ((selEnd >= s) && (selEnd <= e)) {
                 g.setColor(highlight);
                 g.fillRect(BORDER, y - fontLeading, xe - BORDER, fontHeight);
             }
         }
         g.setColor(fg);
         g.drawString(text, MARGIN - movedRight, y + fontAscent);
     }

     int pos2x(int pos) {
         FontMetrics fm = getFontMetrics(target.getFont());
         int widths[] = fm.getWidths();
         TextLine tl1 = (TextLine)lines.elementAt(0);
         TextLine tl2;
         int l = 0;
         for (int i = 0; i < lines.size() - 1; i++) {
             tl2 = (TextLine)lines.elementAt(i+1);
             if (pos >= tl1.pos && pos < tl2.pos) {
                 l = i;
                 break;
             }
             tl1 = tl2;
         }
         int x = MARGIN;
         for (int i = 0 ; i < (pos - tl1.pos - 1) ; i++) {
             x += widths[tl1.text.charAt(i)];
         }
         return x;
     }

     /**
      * DEPRECATED
      */
     public void insertText(String txt, int pos) {
         insert(txt, pos);
     }

     /**
      * DEPRECATED
      */
     public void replaceText(String txt, int start, int end) {
         replaceRange(txt, start, end);
     }

     /**
      * DEPRECATED
      */
     public Dimension minimumSize() {
         return getMinimumSize();
     }

     /**
      * DEPRECATED
      */
     public Dimension preferredSize(int rows, int cols) {
         return getPreferredSize(rows, cols);
     }

     /**
      * DEPRECATED
      */
     public Dimension minimumSize(int rows, int cols) {
         return getMinimumSize(rows, cols);
     }

     /*
      * Post a new TextEvent when the value of a text component changes.
      */
     public void valueChanged() {
         postEvent(new TextEvent(target, TextEvent.TEXT_VALUE_CHANGED));
     }

     void pShow(){
       pShow2();
       notifyTextComponentChange(true);
     }

     void pHide(){
       notifyTextComponentChange(false);
       super.pHide();
     }

     void pDispose(){
       notifyTextComponentChange(false);
       super.pDispose();
     }

     public boolean handlesWheelScrolling() {return true;}

     public void handleEvent(AWTEvent e) {
         if (e.getID() == MouseEvent.MOUSE_WHEEL) {
             MouseWheelEvent mwe = (MouseWheelEvent)e;
             nativeHandleMouseWheel(mwe.getScrollType(),
                                    mwe.getScrollAmount(),
                                    mwe.getWheelRotation());
         }
         else {
             super.handleEvent(e);
         }
     }

      public InputMethodRequests getInputMethodRequests() {
             return null;
       }


     native void nativeHandleMouseWheel(int scrollType,
                                        int scrollAmount,
                                        int wheelRotation);

     //
     // Accessibility support
     //


     // stub functions: to be fully implemented in a future release
     public int getIndexAtPoint(int x, int y) { return -1; }
     public Rectangle getCharacterBounds(int i) { return null; }
     public long filterEvents(long mask) { return 0; }

 /*  To be fully implemented in a future release

     int oldSelectionStart;
     int oldSelectionEnd;

     public native int getIndexAtPoint(int x, int y);
     public native Rectangle getCharacterBounds(int i);
     public native long filterEvents(long mask);

     /**
      * Handle a change in the text selection endpoints
      * (Note: could be simply a change in the caret location)
      *
     public void selectionValuesChanged(int start, int end) {
         return;  // Need to write implementation of this.
     }
 */
 }


 class TextLine {
     String text;
     int pos;
 }
	/*
	* Copyright 1995-2003 Sun Microsystems, Inc. All Rights Reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Sun designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Sun in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	* CA 95054 USA or visit www.sun.com if you need additional information or
	* have any questions.
	*/

	package sun.awt.motif;

	import java.awt.*;
	import java.awt.peer.*;
	import java.awt.event.TextEvent;
	import java.awt.event.MouseEvent;
	import java.awt.event.MouseWheelEvent;
	import java.awt.datatransfer.*;
	import java.io.BufferedReader;
	import java.io.StringReader;
	import java.io.IOException;
	import java.util.Vector;
	import java.awt.im.InputMethodRequests;


	public class MTextAreaPeer extends MComponentPeer implements TextAreaPeer {
	native void pCreate(MComponentPeer parent);

	private boolean firstChangeSkipped;

	/**
	* Initialize JNI field and method IDs
	*/
	private static native void initIDs();

	static {
	initIDs();
	}

	void create(MComponentPeer parent) {
	firstChangeSkipped = false;
	pCreate(parent);
	}

	void initialize() {
	int start, end;

	TextArea txt = (TextArea)target;
	String text;

	if ((text = txt.getText()) != null) {
	setText(text);
	}

	start = txt.getSelectionStart();
	end = txt.getSelectionEnd();

	if (end > start) {
	select(start, end);
	} else {
	setCaretPosition(start);
	}

	super.pSetScrollbarBackground(getParent_NoClientCode(target).getBackground());

	if (!target.isBackgroundSet()) {
	// This is a way to set the background color of the TextArea
	// without calling setBackground - go through native C code
	setTargetBackground(SystemColor.text);
	}
	if (!target.isForegroundSet()) {
	target.setForeground(SystemColor.textText);
	}

	setEditable(txt.isEditable());

	// oldSelectionStart = -1; // accessibility support
	// oldSelectionEnd = -1; // accessibility support

	super.initialize();
	}

	public MTextAreaPeer(TextArea target) {
	super(target);
	}

	public void setEditable(boolean editable) {
	pSetEditable(editable);

	/* 4136955 - Calling setBackground() here works around an Xt
	* bug by forcing Xt to flush an internal widget cache
	*/
	setBackground(target.getBackground());
	}
	public void setBackground(Color c) {
	setTextBackground(c);
	}
	public void setForeground(Color c) {
	pSetInnerForeground(c);
	}

	native int getExtraWidth();
	native int getExtraHeight();
	public native void setTextBackground(Color c);
	public native void pSetEditable(boolean e);
	public native void select(int selStart, int selEnd);
	public native int getSelectionStart();
	public native int getSelectionEnd();
	public native void setText(String txt);
	public native String getText();
	public native void insert(String txt, int pos);
	public native void replaceRange(String txt, int start, int end);
	public native void setFont(Font f);
	public native void setCaretPosition(int pos);
	public native int getCaretPosition();
	public native void pSetCursor(Cursor c);
	native void pShow2();
	native void pMakeCursorVisible();


	public Dimension getMinimumSize() {
	return getMinimumSize(10, 60);
	}
	public Dimension getPreferredSize(int rows, int cols) {
	return getMinimumSize(rows, cols);
	}
	public Dimension getMinimumSize(int rows, int cols) {
	FontMetrics fm = getFontMetrics(target.getFont());

	/* Calculate proper size for text area plus scrollbars.
	* - Motif allows NO leading in its text areas ...
	* - extra width and height counts everything outside the
	* usable text space.
	* (bug 4103248, 4120310):
	* - Motif uses maxAscent + maxDescent, not ascent + descent.
	*/
	int colWidth = fm.charWidth('0');
	int rowHeight = fm.getMaxAscent() + fm.getMaxDescent();
	return new Dimension(cols * colWidth + getExtraWidth(),
	rows * rowHeight + getExtraHeight());
	}
	public boolean isFocusable() {
	return true;
	}

	// Called from native widget when paste key is pressed and we
	// already own the selection (prevents Motif from hanging while
	// waiting for the selection)
	//
	public void pasteFromClipboard() {
	Clipboard clipboard = target.getToolkit().getSystemClipboard();

	Transferable content = clipboard.getContents(this);
	if (content != null) {
	try {
	String data = (String)(content.getTransferData(DataFlavor.stringFlavor));
	// fix for 4401853: to clear TextArea selection if null is pasted
	data = (data == null ? "" : data);
	replaceRange(data, getSelectionStart(), getSelectionEnd());

	} catch (Exception e) {
	}
	}
	}

	/*
	* Print the native component by rendering the Motif look ourselves.
	* ToDo(aim): needs to query native motif for more accurate size and
	* color information, the top/left text offsets, and selected text.
	*/
	static final int MARGIN = 2;
	static final int BORDER = 1;
	static final int SCROLLBAR = 16;
	int fontHeight;
	int fontAscent;
	int fontLeading;
	int topLine = 0;
	int numLines = 0;
	int textLength = 0;
	Vector lines;
	int selStart = 0;
	int selEnd = 0;
	int movedRight = 0;

	// the following vars are assigned in print() method
	transient boolean hscrollbar;
	transient boolean vscrollbar;

	public void print(Graphics g) {
	TextArea area = (TextArea)target;
	Dimension d = area.size();
	Color bg = area.getBackground();
	Color fg = area.getForeground();
	FontMetrics fm = getFontMetrics(area.getFont());
	int vmin, vmax, vval, vvis;
	int hmin, hmax, hval, hvis;
	int max = 0;

	/*
	Doesn't work right yet.
	selStart = area.getSelectionStart();
	selEnd = area.getSelectionEnd();
	*/

	// Figure out number of lines and max line length
	String text = area.getText();
	textLength = text.length();
	BufferedReader is = new BufferedReader(new StringReader(text));
	String line;
	int pos = 0;
	lines = new Vector();
	int sv = ((TextArea)target).getScrollbarVisibility();
	vscrollbar = (sv == TextArea.SCROLLBARS_BOTH \|\|
	sv == TextArea.SCROLLBARS_VERTICAL_ONLY);
	hscrollbar = (sv == TextArea.SCROLLBARS_BOTH \|\|
	sv == TextArea.SCROLLBARS_HORIZONTAL_ONLY);
	boolean wrap = !hscrollbar;
	int w = d.width - (vscrollbar ? SCROLLBAR : 0);
	int h = d.height - (hscrollbar ? SCROLLBAR : 0);

	try {
	numLines = 0;
	while((line = is.readLine()) != null) {
	int len = fm.stringWidth(line);
	if (len > w && wrap) {
	// need to do line wrapping
	int start = 0;
	int end = 0;
	int string_length = line.length();
	while (true) {
	int line_width = 0;
	end = start + 1; // at least one character per line
	while (end < string_length) {
	char c = line.charAt(end);
	int cw = fm.charWidth(c);
	if (line_width + cw + 10 > w) // +10?
	break;
	line_width += cw;
	end++;
	}
	// form a line from start to end (not including end)
	String substr = line.substring(start, end);
	// System.out.println("wrap line: " + substr);
	TextLine tline = new TextLine();
	tline.text = substr;
	tline.pos = pos + start;
	lines.addElement(tline);
	start = end;
	max = Math.max(max, len);
	numLines ++;
	if (end == string_length) {
	// we have processed the whole string
	pos += line.length() + 1; // +1 for the ending \n ?
	break;
	}
	}
	} else {
	TextLine tline = new TextLine();
	tline.text = line;
	tline.pos = pos;
	lines.addElement(tline);
	pos += line.length() + 1;

	max = Math.max(max, len);
	numLines++;
	}
	}
	is.close();

	} catch (IOException e) {
	}


	fontHeight = fm.getHeight();
	fontAscent = fm.getAscent();
	fontLeading = fm.getLeading();

	hmin = vmin = 0;

	vvis = linesInWindow(true);
	vmax = Math.max(numLines - vvis, 0);
	vval = 0;

	hvis = w - (2 * MARGIN);
	hmax = Math.max(max - hvis, 0);
	hval = 0;

	g.setColor(bg);
	g.fillRect(BORDER, BORDER, w, h);
	if (vscrollbar)
	{
	int sbh = d.height - (hscrollbar ? SCROLLBAR : 0);
	g.fillRect(d.width - SCROLLBAR - 3, 1, SCROLLBAR - 3, sbh - 1);
	Graphics ng = g.create();
	try {
	ng.translate(d.width - (SCROLLBAR - 2), 0);
	drawScrollbar(ng, bg, SCROLLBAR - 2, sbh,
	vmin, vmax, vval, vvis, false);
	} finally {
	ng.dispose();
	}
	}
	if (hscrollbar)
	{
	int sbw = d.width - (vscrollbar ? SCROLLBAR : 0);
	g.fillRect(1, d.height - SCROLLBAR - 3, sbw - 1, SCROLLBAR - 3);
	Graphics ng = g.create();
	try {
	ng.translate(0, d.height - (SCROLLBAR - 2));
	drawScrollbar(ng, bg, SCROLLBAR - 2, sbw,
	hmin, hmax, hval, hvis, true);
	} finally {
	ng.dispose();
	}
	}

	draw3DRect(g, bg, 0, 0, w - 1, h - 1, false);

	if (text != null) {
	int l = linesInWindow(true);
	h = d.height - ((2 * MARGIN) + SCROLLBAR);
	int e = Math.min(numLines - 1, (topLine + l) - 1);
	paintLines(g, bg, fg, topLine, e);
	}


	target.print(g);
	}

	int linesInWindow(boolean horizScrollbar) {
	Dimension d = target.size();
	int htotal = d.height - ((2 * MARGIN) + (horizScrollbar? SCROLLBAR : 0));
	return htotal / fontHeight;
	}

	void paintLines(Graphics g, Color bg, Color fg, int s, int e) {
	Dimension d = target.size();
	int w = d.width - ((2 * BORDER) + (vscrollbar ? SCROLLBAR : 0));
	int h = d.height - ((2 * BORDER) + (hscrollbar ? SCROLLBAR : 0));
	int lm = linesInWindow(true) + topLine;
	s = Math.max(topLine, s);
	e = Math.min(e, lm - 1);
	Graphics ng = g.create();
	try {
	ng.clipRect(BORDER + MARGIN, MARGIN + BORDER, w - (2*MARGIN),
	h - (2*MARGIN));
	ng.setFont(target.getFont());
	for (int i = s ; i <= e; i++) {
	paintLine(ng, bg, fg, i);
	}
	} finally {
	ng.dispose();
	}
	}

	void paintLine(Graphics g, Color bg, Color fg, int lnr) {
	Dimension d = target.size();
	int l = linesInWindow(true);

	if((lnr < topLine) \|\| (lnr >= l + topLine)) {
	return;
	}
	int w = d.width - ((2 * BORDER) + (hscrollbar ? SCROLLBAR : 0));
	int y = MARGIN + fontLeading + ((lnr - topLine) * fontHeight);
	String text = ((TextLine)lines.elementAt(lnr)).text;
	int len = text.length();

	if (lnr > numLines - 1) {
	g.setColor(bg);
	g.fillRect(BORDER, y - fontLeading, w, fontHeight);
	return;
	}
	int s = 0;
	int e = (lnr < numLines - 1) ? len : textLength;
	int xs = pos2x(selStart) - movedRight;
	int xe = pos2x(selEnd) - movedRight;

	Color highlight = bg.brighter();
	if ((selStart < s) && (selEnd > e)) {
	g.setColor(highlight);
	g.fillRect(BORDER, y - fontLeading, w, fontHeight);
	} else {
	g.setColor(bg);
	g.fillRect(BORDER, y - fontLeading, w, fontHeight);

	if ((selStart >= s) && (selStart <= e)) {
	g.setColor(highlight);

	if (selEnd > e) {
	g.fillRect(xs, y - fontLeading, (w + BORDER) - xs, fontHeight);
	} else if (selStart == selEnd) {
	//g.fillRect(xs, y - fontLeading, 1, fontHeight);
	} else {
	g.fillRect(xs, y - fontLeading, xe - xs, fontHeight);
	}
	} else if ((selEnd >= s) && (selEnd <= e)) {
	g.setColor(highlight);
	g.fillRect(BORDER, y - fontLeading, xe - BORDER, fontHeight);
	}
	}
	g.setColor(fg);
	g.drawString(text, MARGIN - movedRight, y + fontAscent);
	}

	int pos2x(int pos) {
	FontMetrics fm = getFontMetrics(target.getFont());
	int widths[] = fm.getWidths();
	TextLine tl1 = (TextLine)lines.elementAt(0);
	TextLine tl2;
	int l = 0;
	for (int i = 0; i < lines.size() - 1; i++) {
	tl2 = (TextLine)lines.elementAt(i+1);
	if (pos >= tl1.pos && pos < tl2.pos) {
	l = i;
	break;
	}
	tl1 = tl2;
	}
	int x = MARGIN;
	for (int i = 0 ; i < (pos - tl1.pos - 1) ; i++) {
	x += widths[tl1.text.charAt(i)];
	}
	return x;
	}

	/**
	* DEPRECATED
	*/
	public void insertText(String txt, int pos) {
	insert(txt, pos);
	}

	/**
	* DEPRECATED
	*/
	public void replaceText(String txt, int start, int end) {
	replaceRange(txt, start, end);
	}

	/**
	* DEPRECATED
	*/
	public Dimension minimumSize() {
	return getMinimumSize();
	}

	/**
	* DEPRECATED
	*/
	public Dimension preferredSize(int rows, int cols) {
	return getPreferredSize(rows, cols);
	}

	/**
	* DEPRECATED
	*/
	public Dimension minimumSize(int rows, int cols) {
	return getMinimumSize(rows, cols);
	}

	/*
	* Post a new TextEvent when the value of a text component changes.
	*/
	public void valueChanged() {
	postEvent(new TextEvent(target, TextEvent.TEXT_VALUE_CHANGED));
	}

	void pShow(){
	pShow2();
	notifyTextComponentChange(true);
	}

	void pHide(){
	notifyTextComponentChange(false);
	super.pHide();
	}

	void pDispose(){
	notifyTextComponentChange(false);
	super.pDispose();
	}

	public boolean handlesWheelScrolling() {return true;}

	public void handleEvent(AWTEvent e) {
	if (e.getID() == MouseEvent.MOUSE_WHEEL) {
	MouseWheelEvent mwe = (MouseWheelEvent)e;
	nativeHandleMouseWheel(mwe.getScrollType(),
	mwe.getScrollAmount(),
	mwe.getWheelRotation());
	}
	else {
	super.handleEvent(e);
	}
	}

	public InputMethodRequests getInputMethodRequests() {
	return null;
	}



	native void nativeHandleMouseWheel(int scrollType,
	int scrollAmount,
	int wheelRotation);

	//
	// Accessibility support
	//


	// stub functions: to be fully implemented in a future release
	public int getIndexAtPoint(int x, int y) { return -1; }
	public Rectangle getCharacterBounds(int i) { return null; }
	public long filterEvents(long mask) { return 0; }

	/* To be fully implemented in a future release

	int oldSelectionStart;
	int oldSelectionEnd;

	public native int getIndexAtPoint(int x, int y);
	public native Rectangle getCharacterBounds(int i);
	public native long filterEvents(long mask);

	/**
	* Handle a change in the text selection endpoints
	* (Note: could be simply a change in the caret location)
	*
	public void selectionValuesChanged(int start, int end) {
	return; // Need to write implementation of this.
	}
	*/
	}


	class TextLine {
	String text;
	int pos;
	}