/**
* Called when a user processing input characters and select candidates from input method.
*
* @param text Text from InputMethodEvent.
* @param commited_count Numbers of committed characters in text.
*/
public void processCompositionText(AttributedCharacterIterator text, int committed_count) {
int layoutCaretPosition = initialCaretPosition + committed_count;
CompositionTextPainter compositionPainter = textArea.getPainter().getCompositionTextpainter();
compositionPainter.setComposedTextLayout(
getTextLayout(text, committed_count), layoutCaretPosition);
int textLength = text.getEndIndex() - text.getBeginIndex() - committed_count;
StringBuffer unCommitedStringBuf = new StringBuffer(textLength);
char c;
for (c = text.setIndex(committed_count);
c != AttributedCharacterIterator.DONE && textLength > 0;
c = text.next(), --textLength) {
unCommitedStringBuf.append(c);
}
String unCommittedString = unCommitedStringBuf.toString();
try {
if (canRemovePreviousInput(committed_count)) {
textArea.getDocument().remove(layoutCaretPosition, prevComposeString.length());
}
textArea.getDocument().insertString(layoutCaretPosition, unCommittedString, null);
if (committed_count > 0) {
initialCaretPosition = initialCaretPosition + committed_count;
}
prevComposeString = unCommittedString;
prevCommittedCount = committed_count;
} catch (BadLocationException e) {
e.printStackTrace();
}
}
protected void paintSyntaxLine(
Graphics gfx,
TokenMarker tokenMarker,
int line,
Font defaultFont,
Color defaultColor,
int x,
int y) {
textArea.getLineText(currentLineIndex, currentLine);
currentLineTokens = tokenMarker.markTokens(currentLine, currentLineIndex);
paintHighlight(gfx, line, y);
gfx.setFont(defaultFont);
gfx.setColor(defaultColor);
y += fm.getHeight();
x = SyntaxUtilities.paintSyntaxLine(currentLine, currentLineTokens, styles, this, gfx, x, y);
/*
* Draw characters via input method.
*/
if (compositionTextPainter != null && compositionTextPainter.hasComposedTextLayout()) {
compositionTextPainter.draw(gfx, lineHighlightColor);
}
if (eolMarkers) {
gfx.setColor(eolMarkerColor);
gfx.drawString(".", x, y);
}
}
/**
* Called when a user fixed text from input method or delete all composition text. This method
* resets CompositionTextPainter.
*
* @param text Text from InputMethodEvent.
* @param commited_count Numbers of committed characters in text.
*/
public void endCompositionText(AttributedCharacterIterator text, int committed_count) {
/*
* If there are no committed characters, remove it all from textarea.
* This case will happen if a user delete all composing characters by backspace or delete key.
* If it does, these previous characters are needed to be deleted.
*/
if (committed_count == 0) {
removeNotCommittedText(text);
}
CompositionTextPainter compositionPainter = textArea.getPainter().getCompositionTextpainter();
compositionPainter.invalidateComposedTextLayout(initialCaretPosition + committed_count);
prevComposeString = "";
isInputProcess = false;
}
protected void paintPlainLine(
Graphics gfx, int line, Font defaultFont, Color defaultColor, int x, int y) {
paintHighlight(gfx, line, y);
textArea.getLineText(line, currentLine);
gfx.setFont(defaultFont);
gfx.setColor(defaultColor);
y += fm.getHeight();
x = Utilities.drawTabbedText(currentLine, x, y, gfx, this, 0);
// Draw characters via input method.
if (compositionTextPainter != null && compositionTextPainter.hasComposedTextLayout()) {
compositionTextPainter.draw(gfx, lineHighlightColor);
}
if (eolMarkers) {
gfx.setColor(eolMarkerColor);
gfx.drawString(".", x, y);
}
}