getInitialSelectedText
Gets the selected text, if any. May be null
when no text is selected or the selected text is way too long.
Return
the text that is currently selected, if any. It could be an empty string when there is no text selected. When null
is returned, the selected text might be too long or this protocol is not supported.
Parameters
editorInfo
the editor with which to get the text.
flags
Supplies additional options controlling how the text is returned. May be either 0 or GET_TEXT_WITH_STYLES.