Examples with ProjectViewNestingRulesProvider com.intellij.ide.projectView.ProjectViewNestingRulesProvider used on opensource projects

Example 1 with ProjectViewNestingRulesProvider

use of com.intellij.ide.projectView.ProjectViewNestingRulesProvider in project intellij-community by JetBrains.

the class NestingTreeStructureProvider method getNestingRules.

@NotNull
private Collection<NestingRule> getNestingRules() {
    if (myNestingRules == null) {
        myNestingRules = new THashSet<>();
        final MultiMap<String, String> childToParentSuffix = new MultiMap<>();
        final MultiMap<String, String> parentToChildSuffix = new MultiMap<>();
        final ProjectViewNestingRulesProvider.Consumer consumer = new ProjectViewNestingRulesProvider.Consumer() {

            @Override
            public void addNestingRule(@NotNull final String parentFileSuffix, @NotNull final String childFileSuffix) {
                LOG.assertTrue(!parentFileSuffix.isEmpty() && !childFileSuffix.isEmpty(), "file suffix must not be empty");
                LOG.assertTrue(!parentFileSuffix.equals(childFileSuffix), "parent and child suffixes must be different: " + parentFileSuffix);
                myNestingRules.add(new NestingRule(parentFileSuffix, childFileSuffix));
                childToParentSuffix.putValue(childFileSuffix, parentFileSuffix);
                parentToChildSuffix.putValue(parentFileSuffix, childFileSuffix);
                // for all cases like A -> B -> C we also add a rule A -> C
                for (String s : parentToChildSuffix.get(childFileSuffix)) {
                    myNestingRules.add(new NestingRule(parentFileSuffix, s));
                    parentToChildSuffix.putValue(parentFileSuffix, s);
                    childToParentSuffix.putValue(s, parentFileSuffix);
                }
                for (String s : childToParentSuffix.get(parentFileSuffix)) {
                    myNestingRules.add(new NestingRule(s, childFileSuffix));
                    parentToChildSuffix.putValue(s, childFileSuffix);
                    childToParentSuffix.putValue(childFileSuffix, s);
                }
            }
        };
        for (ProjectViewNestingRulesProvider provider : EP_NAME.getExtensions()) {
            provider.addFileNestingRules(consumer);
        }
    }
    return myNestingRules;
}