@Override
public void execute() {
if (focus) {
// Rich text area needs to be focused in order to have a proper selection or caret.
rta.setFocus(true);
}
if (rta.getCommandManager().isEnabled(command)) {
rta.getCommandManager().execute(command, parameter);
}
}
/**
* Moves the caret outside the passed anchor.
*
* @param rta the underlying rich text area
* @param selectedAnchor the anchor to move the caret out of
* @param atEnd {@code true} if the caret is at the end of the selected anchor, {@code false} if
* it's at the beginning.
*/
private void moveCaretOuside(RichTextArea rta, Element selectedAnchor, boolean atEnd) {
Range newRange = rta.getDocument().createRange();
if (atEnd) {
newRange.setStartAfter(selectedAnchor);
} else {
newRange.setStartBefore(selectedAnchor);
}
newRange.collapse(true);
// now set it on the document
rta.getDocument().getSelection().removeAllRanges();
rta.getDocument().getSelection().addRange(newRange);
}
/**
* Overwrites the default rich text area behavior when the user releases the mouse button.
*
* @param event the native event that was fired
*/
protected void onBeforeMouseUp(Event event) {
// The height of the body element is given by its content. When the height of the body element
// is less than the
// rich text area height the user can click outside of the body element, on the HTML element.
// When this happens
// the selection can be lost. To prevent this we give the focus back to the body element.
if (Element.is(event.getEventTarget())
&& "html".equalsIgnoreCase(Element.as(event.getEventTarget()).getTagName())) {
textArea.setFocus(true);
}
}