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Improved handling of backspace based on my understanding

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of various known Java bugs. Those who mess around with
backspace take note of the following:

The Java bug database has several related bugs concerning the treatment
of backspace. Here I adopt solution based on fix of bug 4402080:
Evaluation  The text components now key off of KEY_TYPED with a keyChar == 8 to do the
deletion. The motivation for this can be found in bug 4256901.
xxxxx@xxxxx 2001-01-05
This commit is contained in:
eg3p 2003-04-07 16:41:49 +00:00
parent e7684dedcd
commit 275cf9d79d
1 changed files with 9 additions and 42 deletions
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51
source/org/thdl/tib/input/DuffPane.java
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@ -43,7 +43,7 @@ import org.thdl.util.StatusBar;
* @author Edward Garrett, Tibetan and Himalayan Digital Library
* @version 1.0
*/
public class DuffPane extends TibetanPane implements FocusListener, KeyListener {
public class DuffPane extends TibetanPane implements FocusListener {
/**
* The status bar to update with messages about the current input mode.
* Are we expecting a vowel? a subscript? et cetera.
@ -285,7 +285,7 @@ public class DuffPane extends TibetanPane implements FocusListener, KeyListener
private void setupEditor() {
rtfBoard = getToolkit().getSystemClipboard();
newDocument();
newDocument();
romanFontFamily = ThdlOptions.getStringOption("thdl.default.roman.font.face",
"Serif"); // FIXME write out this preference.
@ -294,9 +294,14 @@ public class DuffPane extends TibetanPane implements FocusListener, KeyListener
caret = getCaret();
addKeyListener(this);
addFocusListener(this);
addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent kev) {
if (kev.isActionKey() || kev.getKeyCode() == KeyEvent.VK_BACK_SPACE)
initKeyboard();
}
});
setupKeymap();
}
@ -1136,44 +1141,6 @@ public void paste(int offset) {
public void disableCutAndPaste() {
isCutAndPasteEnabled = false;
}
/**
* Required by contract with the KeyListener interface,
* this method initializes the keyboard
* when an action key is pressed. It leaves the
* behavior up to the Keymap of this DuffPane.
*/
public void keyPressed(KeyEvent e) {
// FIXME: exceptions thrown here do not cause the program to fail, even in development mode.
if (e.isActionKey())
initKeyboard();
}
/**
* Required by contract with the KeyListener interface,
* this method does nothing.
*
* @param e a KeyEvent
*/
public void keyTyped(KeyEvent e) { }
/**
* Required by contract with the Key Listener interface,
* this method initializes the keyboard if the user presses
* backspace.
*
* @param e the KeyEvent
*/
public void keyReleased(KeyEvent e) {
// FIXME: exceptions thrown here do not cause the program to fail, even in development mode.
if (e.getKeyCode() == KeyEvent.VK_BACK_SPACE)
initKeyboard();
}
private void processRomanChar(String key, MutableAttributeSet attSet) {
switch (key.charAt(0)) {