jdk/src/solaris/classes/sun/awt/motif/MTextFieldPeer.java - platform/libcore - Gitiles

 /*
  * 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.datatransfer.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.TextEvent;
 import java.awt.im.InputMethodRequests;


 public class MTextFieldPeer extends MComponentPeer implements TextFieldPeer {
     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;

         TextField txt = (TextField)target;

         setText(txt.getText());
         if (txt.echoCharIsSet()) {
             setEchoChar(txt.getEchoChar());
         }

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

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

         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 MTextFieldPeer(TextField 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 native void pSetEditable(boolean editable);
     public native void select(int selStart, int selEnd);
     public native int getSelectionStart();
     public native int getSelectionEnd();
     public native void setText(String l);
     public native void insertReplaceText(String l);
     public native void preDispose();
     public native String getText();
     public native void setEchoChar(char c);
     public native void setFont(Font f);
     public native void setCaretPosition(int pos);
     public native int getCaretPosition();

     // CDE/Motif defaults: margin=5, shadow=2, highlight=1 -- times 2.
     // Should have asked the widgets for correct values (see MTextAreaPeer).
     private static final int padding = 16;

     public Dimension getMinimumSize() {
         FontMetrics fm = getFontMetrics(target.getFont());
         return new Dimension(fm.stringWidth(((TextField)target).getText())+20,
                              fm.getMaxDescent() + fm.getMaxAscent() + padding);
     }

     public Dimension getPreferredSize(int cols) {
         return getMinimumSize(cols);
     }

     public Dimension getMinimumSize(int cols) {
         FontMetrics fm = getFontMetrics(target.getFont());
         return new Dimension(fm.charWidth('0') * cols + 20,
                              fm.getMaxDescent() + fm.getMaxAscent() + padding);
     }

     public boolean isFocusable() {
         return true;
     }

     // NOTE: This method is called by privileged threads.
     //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
     public void action(final long when, final int modifiers) {
         MToolkit.executeOnEventHandlerThread(target, new Runnable() {
             public void run() {
                 postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED,
                                           ((TextField)target).getText(), when,
                                           modifiers));
             }
         });
     }

     protected void disposeImpl() {
         preDispose();
         super.disposeImpl();
     }

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

     // Called from native widget when paste key is pressed and we
     // already own the selection (prevents Motif from hanging while
     // waiting for the selection)
     //
     // NOTE: This method is called by privileged threads.
     //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
     public void pasteFromClipboard() {
         Clipboard clipboard = target.getToolkit().getSystemClipboard();

         Transferable content = clipboard.getContents(this);
         if (content != null) {
             try {
                 String data = (String)(content.getTransferData(DataFlavor.stringFlavor));
                 insertReplaceText(data);

             } 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, left text offset, and selected text.
      */
     public final static int BORDER = 2;
     public final static int MARGIN = 4;

     public void print(Graphics g) {
         TextField txt = (TextField)target;
         Dimension d = txt.size();
         int w = d.width - (2 * BORDER);
         int h = d.height - (2 * BORDER);
         Color bg = txt.getBackground();
         Color fg = txt.getForeground();
         Color highlight = bg.brighter();
         String text = txt.getText();
         int moved = 0;
         int selStart = 0;
         int selEnd = 0;

         g.setFont(txt.getFont());
         g.setColor(txt.isEditable() ? highlight : bg);
         g.fillRect(BORDER, BORDER, w, h);

         g.setColor(bg);
         //g.drawRect(0, 0, d.width-1, d.height-1);
         draw3DRect(g, bg, 1, 1, d.width-3, d.height-3, false);

         if (text != null) {
             g.clipRect(BORDER, MARGIN, w, d.height - (2 * MARGIN));
             FontMetrics fm = g.getFontMetrics();

             w = d.width - BORDER;
             h = d.height - (2 * MARGIN);
             int xs = pos2x(selStart) - moved;
             int xe = pos2x(selEnd) - moved;

             if ((xs < MARGIN) && (xe > w)) {
                 g.setColor(highlight);
                 g.fillRect(BORDER, MARGIN, w - BORDER, h);
             } else {
                 g.setColor(bg);
                 //g.fillRect(BORDER, MARGIN, w - BORDER, h);

                 if ((xs >= MARGIN) && (xs <= w)) {
                     g.setColor(highlight); // selected text

                     if (xe > w) {
                         g.fillRect(xs, MARGIN, w - xs, h);
                     } else if (xs == xe) {
                       //g.fillRect(xs, MARGIN, 1, h);
                     } else {
                         g.fillRect(xs, MARGIN, xe - xs, h);
                     }
                 } else if ((xe >= MARGIN) && (xe <= w)) {
                     g.setColor(highlight);
                     g.fillRect(BORDER, MARGIN, xe - BORDER, h);
                 }
             }
            g.setColor(fg);
            int x = MARGIN - moved;
            char echoChar = txt.getEchoChar();
            if (echoChar == 0) {
                g.drawString(text, x, BORDER + MARGIN + fm.getMaxAscent());
            } else {
                char data[] = new char[text.length()];
                for (int i = 0 ; i < data.length ; i++) {
                    data[i] = echoChar;
                }
                g.drawChars(data, 0, data.length, x,
                            BORDER + MARGIN + fm.getMaxAscent());

            }
         }

         target.print(g);
     }

     int pos2x(int pos) {
         TextField txt = (TextField)target;
         FontMetrics fm = getFontMetrics(txt.getFont());
         int x = MARGIN, widths[] = fm.getWidths();
         String text = txt.getText();
         char echoChar = txt.getEchoChar();
         if (echoChar == 0) {
             for (int i = 0 ; i < pos ; i++) {
                 x += widths[text.charAt(i)];
             }
         } else {
             x += widths[echoChar] * pos;
         }
         return x;
     }

     /**
      * DEPRECATED
      */
     public void setEchoCharacter(char c) {
         setEchoChar(c);
     }

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

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

     /**
      * DEPRECATED
      */
     public Dimension preferredSize(int cols) {
         return getPreferredSize(cols);
     }
     void pShow(){
       super.pShow();
       notifyTextComponentChange(true);
     }

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

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

      public InputMethodRequests getInputMethodRequests() {
             return null;
       }


     //
     // 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 implemetation of this.
     }
 */

 }
	/*
	* 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.datatransfer.*;
	import java.awt.event.ActionEvent;
	import java.awt.event.TextEvent;
	import java.awt.im.InputMethodRequests;


	public class MTextFieldPeer extends MComponentPeer implements TextFieldPeer {
	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;

	TextField txt = (TextField)target;

	setText(txt.getText());
	if (txt.echoCharIsSet()) {
	setEchoChar(txt.getEchoChar());
	}

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

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

	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 MTextFieldPeer(TextField 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 native void pSetEditable(boolean editable);
	public native void select(int selStart, int selEnd);
	public native int getSelectionStart();
	public native int getSelectionEnd();
	public native void setText(String l);
	public native void insertReplaceText(String l);
	public native void preDispose();
	public native String getText();
	public native void setEchoChar(char c);
	public native void setFont(Font f);
	public native void setCaretPosition(int pos);
	public native int getCaretPosition();

	// CDE/Motif defaults: margin=5, shadow=2, highlight=1 -- times 2.
	// Should have asked the widgets for correct values (see MTextAreaPeer).
	private static final int padding = 16;

	public Dimension getMinimumSize() {
	FontMetrics fm = getFontMetrics(target.getFont());
	return new Dimension(fm.stringWidth(((TextField)target).getText())+20,
	fm.getMaxDescent() + fm.getMaxAscent() + padding);
	}

	public Dimension getPreferredSize(int cols) {
	return getMinimumSize(cols);
	}

	public Dimension getMinimumSize(int cols) {
	FontMetrics fm = getFontMetrics(target.getFont());
	return new Dimension(fm.charWidth('0') * cols + 20,
	fm.getMaxDescent() + fm.getMaxAscent() + padding);
	}

	public boolean isFocusable() {
	return true;
	}

	// NOTE: This method is called by privileged threads.
	// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
	public void action(final long when, final int modifiers) {
	MToolkit.executeOnEventHandlerThread(target, new Runnable() {
	public void run() {
	postEvent(new ActionEvent(target, ActionEvent.ACTION_PERFORMED,
	((TextField)target).getText(), when,
	modifiers));
	}
	});
	}

	protected void disposeImpl() {
	preDispose();
	super.disposeImpl();
	}

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

	// Called from native widget when paste key is pressed and we
	// already own the selection (prevents Motif from hanging while
	// waiting for the selection)
	//
	// NOTE: This method is called by privileged threads.
	// DO NOT INVOKE CLIENT CODE ON THIS THREAD!
	public void pasteFromClipboard() {
	Clipboard clipboard = target.getToolkit().getSystemClipboard();

	Transferable content = clipboard.getContents(this);
	if (content != null) {
	try {
	String data = (String)(content.getTransferData(DataFlavor.stringFlavor));
	insertReplaceText(data);

	} 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, left text offset, and selected text.
	*/
	public final static int BORDER = 2;
	public final static int MARGIN = 4;

	public void print(Graphics g) {
	TextField txt = (TextField)target;
	Dimension d = txt.size();
	int w = d.width - (2 * BORDER);
	int h = d.height - (2 * BORDER);
	Color bg = txt.getBackground();
	Color fg = txt.getForeground();
	Color highlight = bg.brighter();
	String text = txt.getText();
	int moved = 0;
	int selStart = 0;
	int selEnd = 0;

	g.setFont(txt.getFont());
	g.setColor(txt.isEditable() ? highlight : bg);
	g.fillRect(BORDER, BORDER, w, h);

	g.setColor(bg);
	//g.drawRect(0, 0, d.width-1, d.height-1);
	draw3DRect(g, bg, 1, 1, d.width-3, d.height-3, false);

	if (text != null) {
	g.clipRect(BORDER, MARGIN, w, d.height - (2 * MARGIN));
	FontMetrics fm = g.getFontMetrics();

	w = d.width - BORDER;
	h = d.height - (2 * MARGIN);
	int xs = pos2x(selStart) - moved;
	int xe = pos2x(selEnd) - moved;

	if ((xs < MARGIN) && (xe > w)) {
	g.setColor(highlight);
	g.fillRect(BORDER, MARGIN, w - BORDER, h);
	} else {
	g.setColor(bg);
	//g.fillRect(BORDER, MARGIN, w - BORDER, h);

	if ((xs >= MARGIN) && (xs <= w)) {
	g.setColor(highlight); // selected text

	if (xe > w) {
	g.fillRect(xs, MARGIN, w - xs, h);
	} else if (xs == xe) {
	//g.fillRect(xs, MARGIN, 1, h);
	} else {
	g.fillRect(xs, MARGIN, xe - xs, h);
	}
	} else if ((xe >= MARGIN) && (xe <= w)) {
	g.setColor(highlight);
	g.fillRect(BORDER, MARGIN, xe - BORDER, h);
	}
	}
	g.setColor(fg);
	int x = MARGIN - moved;
	char echoChar = txt.getEchoChar();
	if (echoChar == 0) {
	g.drawString(text, x, BORDER + MARGIN + fm.getMaxAscent());
	} else {
	char data[] = new char[text.length()];
	for (int i = 0 ; i < data.length ; i++) {
	data[i] = echoChar;
	}
	g.drawChars(data, 0, data.length, x,
	BORDER + MARGIN + fm.getMaxAscent());

	}
	}

	target.print(g);
	}

	int pos2x(int pos) {
	TextField txt = (TextField)target;
	FontMetrics fm = getFontMetrics(txt.getFont());
	int x = MARGIN, widths[] = fm.getWidths();
	String text = txt.getText();
	char echoChar = txt.getEchoChar();
	if (echoChar == 0) {
	for (int i = 0 ; i < pos ; i++) {
	x += widths[text.charAt(i)];
	}
	} else {
	x += widths[echoChar] * pos;
	}
	return x;
	}

	/**
	* DEPRECATED
	*/
	public void setEchoCharacter(char c) {
	setEchoChar(c);
	}

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

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

	/**
	* DEPRECATED
	*/
	public Dimension preferredSize(int cols) {
	return getPreferredSize(cols);
	}
	void pShow(){
	super.pShow();
	notifyTextComponentChange(true);
	}

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

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

	public InputMethodRequests getInputMethodRequests() {
	return null;
	}



	//
	// 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 implemetation of this.
	}
	*/

	}