[Geotools-gt2-users] Making Rule Inactive?

[Oliver Gottwald <oliver@dr...>]

Hi,

Is the only way to make a rule inactive to remove it from the Rule List by creating a new Rule List????

Currently I have code that takes a style as a parameter and a symbolizer name(labelField) as a parameter.  I drill down to the rule that has the Symbolizer name
and exclude it when adding to a new rule: rule.symbolizers().add(ts);

The following is the method for removing a rule from a style based on a symbolizer name that is passed as a labelField String Parameter:

public static Style removeRule(Style style, String labelField){
    
    ArrayList<FeatureTypeStyle> ftsList = (ArrayList<FeatureTypeStyle>)style.featureTypeStyles();
    ListIterator<FeatureTypeStyle> i = ftsList.listIterator();
    while(i.hasNext()){
        FeatureTypeStyle ftStyle = i.next();
        Rule rule = styleFactory.createRule();
        ArrayList<Rule> rList = (ArrayList<Rule>)ftStyle.rules();
        ListIterator<Rule> r = rList.listIterator();
        while(r.hasNext()){
            Rule ruleo = r.next();
            ArrayList<Symbolizer> symList = (ArrayList<Symbolizer>)ruleo.symbolizers();
            ListIterator<Symbolizer> s = symList.listIterator();
            while(s.hasNext()){
                Symbolizer ts=s.next();
                System.out.println("ts.getName()="+ts.getName()+" "+labelField);
                if(ts.getName().compareTo(labelField)!=0){
                    System.out.println("FIRED: ts.getName()="+ts.getName()+" "+labelField);
                    rule.symbolizers().add(ts);
                }
            }
        } //end rule rList loop
        FeatureTypeStyle fts = styleFactory.createFeatureTypeStyle(new Rule[]{rule});
        style = styleFactory.createStyle();
        style.featureTypeStyles().add(fts);
        
    } //end featureTypeStyle ftsList loop
    return style;
}

Re: [Geotools-gt2-users] Making Rule Inactive?

[Andrea Aime <aaime@op...>]

Oliver Gottwald ha scritto:
> 
> Hi,
> 
> Is the only way to make a rule inactive to remove it from the Rule List 
> by creating a new Rule List????

I read your mail, looked at your code, but honestly I don't understand
what is it that you're trying to do :-)

Can you step back from the "remove rule from the list" issue and tell
us what are you actually trying to do (what is the problem you're trying
to solve)

Cheers
Andrea

-- 
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

Re: [Geotools-gt2-users] Making Rule Inactive?

[Oliver Gottwald <oliver@dr...>]

Andrea,

The following is what I'm trying to do:

In the toolbar i created a JCheckbox named 0_name
I do a split on the 0_name with the layer as 0 index in the mapLayer and
the TextSymbolizer defined name as name

I define a PointSymbolizer and TextSymbolizer for the Layer 0 in my
MapContext

What I'm trying to do is if I click the JCheckbox the label defined by
my TextSymbolizer turns on.  If I deactivate the checkbox the label
disappears.

So think of 3 points on the screen with no Label.
If you click the JCheckbox on/checked the labels appear.  Lets say 3
points with the label L1, L2, and L3
If you click the JCheckbox off/unchecked the labels disappear.
The labels of course are defined as an attribute at FeatureCollection
creation.
The code currently works but it seems really forced.  This seems like a
good idea avoiding repopulation of the FeatureCollection and just a
manipulation of the style via the rules and symbolizer
Also then I don't have multiple layers - 1 layer for the points, and
another layer for the label(L1, L2, L3)

Basically I want to manipulate a layers displayed content by clicking
JCheckbox.
I look forward to hearing back from you.

Oliver


Andrea Aime wrote:
> Oliver Gottwald ha scritto:
>>
>> Hi,
>>
>> Is the only way to make a rule inactive to remove it from the Rule
>> List by creating a new Rule List????
>
> I read your mail, looked at your code, but honestly I don't understand
> what is it that you're trying to do :-)
>
> Can you step back from the "remove rule from the list" issue and tell
> us what are you actually trying to do (what is the problem you're trying
> to solve)
>
> Cheers
> Andrea
>