private void configureHardWrap() {
if (shouldHardWrap()) {
if (hardWrapSegmentListener == null) {
final StyledText textWidget = getTextWidget();
hardWrapSegmentListener =
new BidiSegmentListener() {
@Override
public void lineGetSegments(BidiSegmentEvent e) {
int[] segments = calculateWrapOffsets(e.lineText, MAX_LINE_WIDTH);
if (segments != null) {
char[] segmentsChars = new char[segments.length];
Arrays.fill(segmentsChars, '\n');
e.segments = segments;
e.segmentsChars = segmentsChars;
}
}
};
textWidget.addBidiSegmentListener(hardWrapSegmentListener);
textWidget.setText(
textWidget.getText()); // XXX: workaround for https://bugs.eclipse.org/384886
if (brokenBidiPlatformTextWidth != -1) {
Layout restrictedWidthLayout =
new Layout() {
@Override
protected Point computeSize(
Composite composite, int wHint, int hHint, boolean flushCache) {
Point size = SpellcheckableMessageArea.this.getSize();
Rectangle trim = SpellcheckableMessageArea.this.computeTrim(0, 0, 0, 0);
size.x -= trim.width;
size.y -= trim.height;
if (size.x > brokenBidiPlatformTextWidth) size.x = brokenBidiPlatformTextWidth;
return size;
}
@Override
protected void layout(Composite composite, boolean flushCache) {
Point size = computeSize(composite, SWT.DEFAULT, SWT.DEFAULT, flushCache);
textWidget.setBounds(0, 0, size.x, size.y);
}
};
setLayout(restrictedWidthLayout);
}
}
} else if (hardWrapSegmentListener != null) {
StyledText textWidget = getTextWidget();
textWidget.removeBidiSegmentListener(hardWrapSegmentListener);
textWidget.setText(
textWidget.getText()); // XXX: workaround for https://bugs.eclipse.org/384886
hardWrapSegmentListener = null;
if (brokenBidiPlatformTextWidth != -1) setLayout(new FillLayout());
}
}
private void computeBrokenBidiPlatformTextWidth(int textWidth) {
class BidiSegmentListenerTester implements BidiSegmentListener {
boolean called;
public void lineGetSegments(BidiSegmentEvent event) {
called = true;
}
}
BidiSegmentListenerTester tester = new BidiSegmentListenerTester();
StyledText textWidget = getTextWidget();
textWidget.addBidiSegmentListener(tester);
textWidget.setText(" "); // $NON-NLS-1$
textWidget.computeSize(SWT.DEFAULT, SWT.DEFAULT);
textWidget.removeBidiSegmentListener(tester);
brokenBidiPlatformTextWidth = tester.called ? -1 : textWidth;
}
/*
* @see org.eclipse.jface.text.source.SourceViewer#createControl(org.eclipse.swt.widgets.Composite, int)
*/
@Override
protected void createControl(Composite parent, int styles) {
// Use LEFT_TO_RIGHT unless otherwise specified.
if ((styles & SWT.RIGHT_TO_LEFT) == 0 && (styles & SWT.LEFT_TO_RIGHT) == 0)
styles |= SWT.LEFT_TO_RIGHT;
final int baseLevel =
(styles & SWT.RIGHT_TO_LEFT) != 0
? Bidi.DIRECTION_RIGHT_TO_LEFT
: Bidi.DIRECTION_LEFT_TO_RIGHT;
super.createControl(parent, styles);
fBackspaceManager = new SmartBackspaceManager();
fBackspaceManager.install(this);
StyledText text = getTextWidget();
text.addBidiSegmentListener(
new BidiSegmentListener() {
@Override
public void lineGetSegments(BidiSegmentEvent event) {
if (redraws()) {
try {
event.segments =
getBidiLineSegments(
getDocument(),
baseLevel,
widgetOffset2ModelOffset(event.lineOffset),
event.lineText);
} catch (BadLocationException e) {
// don't touch the segments
}
}
}
});
}