static Action newReplaceText(CharSequence text, int start, int end) {
if (start < 0 || start > end) {
Log.e(LOGTAG, "invalid replace text offsets: " + start + " to " + end);
throw new IllegalArgumentException("invalid replace text offsets");
}
int actionType = TYPE_REPLACE_TEXT;
if (text instanceof Spanned) {
final Spanned spanned = (Spanned) text;
final Object[] spans = spanned.getSpans(0, spanned.length(), Object.class);
for (Object span : spans) {
if ((spanned.getSpanFlags(span) & Spanned.SPAN_COMPOSING) != 0) {
actionType = TYPE_COMPOSE_TEXT;
break;
}
}
}
final Action action = new Action(actionType);
action.mSequence = text;
action.mStart = start;
action.mEnd = end;
return action;
}
static Action newSetSpan(Object object, int start, int end, int flags) {
if (start < 0 || start > end) {
Log.e(LOGTAG, "invalid span offsets: " + start + " to " + end);
throw new IllegalArgumentException("invalid span offsets");
}
final Action action = new Action(TYPE_SET_SPAN);
action.mSpanObject = object;
action.mStart = start;
action.mEnd = end;
action.mSpanFlags = flags;
return action;
}
static Action newSetSelection(int start, int end) {
// start == -1 when the start offset should remain the same
// end == -1 when the end offset should remain the same
if (start < -1 || end < -1) {
Log.e(LOGTAG, "invalid selection offsets: " + start + " to " + end);
throw new IllegalArgumentException("invalid selection offsets");
}
final Action action = new Action(TYPE_SET_SELECTION);
action.mStart = start;
action.mEnd = end;
return action;
}