Chart legend : adding tooltip on each item

Question

Hi,
My app displays a simple Linechart and its legend. I'm
surprised to see that the Legend component doesn't provide many
possibilities in accessing each of the items that compose it.
First, I'd like to add a tooltip on each item of the legend.
Then I would like to display a checkbox in front of every marker,
to display/hide the corresponding item in the Linechart.
One way could be to extend the Legend item (about this I
found
this
nice - yet complicated - example), but I'd really like to know
if there is a more simpe way to achieve it. As the Legend component
is very dependant from its dataprovider, maybe I'd rather create my
own custom legend, using my chart's values ?
Any help will be appreciated ! Popop ./.

Answer 1

les_paulde wrote:
wow, thanks for your swift reply! This definitely solved my problem and I can now run the query. The code turned out as follows:
String convList = listI.toString();
convList = convList.replace("[", "(\"");
convList = convList.replace("]", "\")");
convList = convList.replaceAll(",", "\",");
convList = convList.replaceAll(" ", " \"");
And what happens if the String representation of the object in your list contains one of the characters you're replacing? It will go awfully wrong!
This is safer:
public static String asString(List<?> list) {
    StringBuilder b = new StringBuilder();
    b.append('(');
    for(int i = 0; i < list.size(); i++) {
        b.append('"').append(list.get(i)).append('"');
        if(i < list.size()-1) b.append(", ");
    return b.append(')').toString();
System.out.println(asString(listI));