/** Makes sure that the prompt characters don't get erased when selected. */
protected void clipSelection() {
if (commandLineText.getSelectionCount() > 0) {
Point sel = commandLineText.getSelection();
int leftOffset = Math.min(sel.x, sel.y);
int rightOffset = Math.max(sel.x, sel.y);
if (leftOffset < contentsOffset) {
leftOffset = contentsOffset;
}
if (rightOffset < contentsOffset) {
rightOffset = contentsOffset;
}
commandLineText.setSelection(new Point(leftOffset, rightOffset));
}
}
@Inject
@Optional
public void setStyle(
@UIEventTopic(RelationsConstants.TOPIC_STYLE_CHANGE_FORM) final Styles.StyleEvent inEvent) {
if (textWidget == null) {
return;
}
if (!(isFormStyle ^ inEvent.isFormStyle) && inEvent.style.isToggle()) {
final TextStyler lStyler = new TextStyler(textWidget);
lStyler.format(inEvent.style, inEvent.isFormatNew);
final int lOffset = textWidget.getCaretOffset();
notifyPositionChange(Math.max(lOffset, lOffset - textWidget.getSelectionCount()));
}
}
@Override
public void delete() {
clipSelection();
if (commandLineText.getSelectionCount() > 0) {
commandLineText.insert("");
} else {
int startOffset = commandLineText.getCaretOffset();
if (startOffset < commandLineText.getCharCount()) {
commandLineText.replaceTextRange(startOffset, 1, "");
}
}
// caret doesn't move if character after caret is deleted and won't trigger caretMoved
// update manually
updateCaret();
}
@Override
public void erase() {
clipSelection();
if (commandLineText.getSelectionCount() > 0) {
commandLineText.insert("");
} else {
int startOffset = commandLineText.getCaretOffset();
if (startOffset > contentsOffset) {
commandLineText.replaceTextRange(startOffset - 1, 1, "");
// Caret listener is called before content is updated, update manually
updateCaret();
}
}
updateUISize();
}
@Override
public void type(String characters) {
clipSelection();
setMode(CommandLineMode.DEFAULT);
int start = commandLineText.getCaretOffset();
// Check caret position after replacing selection - caret might have been at end of selection
if (commandLineText.getSelectionCount() > 0) {
Point selection = commandLineText.getSelection();
start = Math.min(selection.x, selection.y);
}
commandLineText.insert(characters);
commandLineText.setCaretOffset(start + characters.length());
// Mouse selection might cause caret to be at the same position as before, update manually
updateCaret();
updateUISize();
}