* Move caret left by one character.
* @param currPos the current position of the caret
* @return true if caret moved else false
*/
protected boolean moveCaretLeft(TextLayoutHitInfo currPos){
TextHitInfo nthi = currPos.tli.layout.getNextLeftHit(currPos.thi);
if(nthi == null){
return false;
}
else {
// Move the caret to the left of current position