Hi Everyone:
I need to create a suggestion box where the user will enter a set of
comma separated categories, very similar to the Gmail address fields,
and display a list of matching key words for the current entry.
For example, let say I have the following suggestions: car; motor;
truck; and caravan. When the user enters 'c' the key words 'car' and
'caravan' will be listed and the user selects one. Then the user
enters comma: ',' followed by 't' (so the suggestion box has the text:
"car, t" with the cursor just after the 't'). Now I want to list all
the matching key words for 't'. I managed to, sort of, go around this
as shown below, but as you’ll see it’s flawed.
MultiWordSuggestOracle oracle = new MultiWordSuggestOracle() {
private String prefix = "";
@Override
public synchronized void requestSuggestions(Request request,
Callback callback) {
prefix = "";
String[] keys = request.getQuery().split(",");
if (keys.length > 0) {
for (int i = 0; i < keys.length - 1; i++) {
prefix += keys[i].trim().toLowerCase() + ", ";
}
request.setQuery(keys[keys.length - 1]);
}
super.requestSuggestions(request, callback);
}
@Override
protected synchronized MultiWordSuggestion createSuggestion(String
replacementString, String displayString) {
return super.createSuggestion(prefix + replacementString,
displayString);
}
};
oracle.add("car");
oracle.add("motor");
oracle.add("truck");
oracle.add("caravan");
SuggestBox categoriesSuggestBox = new SuggestBox(oracle);
The main issue is that I cannot get the cursor position and I can only
append. So the user cannot change one of the first categories. He/she
can only append for this to work correctly.
Do you know of any better implementation?
Thanks in advance,
Albert
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