package org.simantics.modeling;

import java.util.Collection;

import org.simantics.db.Resource;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.request.WriteRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.diagram.stubs.DiagramResource;

public class AssignSymbolGroupRequest extends WriteRequest {
    
    Collection<Resource>    addedSymbolGroup;
    Collection<Resource>    removedSymbolGroup;
    Collection<Resource>    symbols;
    
    public AssignSymbolGroupRequest(Collection<Resource> addedSymbolGroups, Collection<Resource> removedSymbolGroups, Collection<Resource> symbols) {
        this.addedSymbolGroup = addedSymbolGroups;
        this.removedSymbolGroup = removedSymbolGroups;
        this.symbols = symbols;
    }

    @Override
    public void perform(WriteGraph graph) throws DatabaseException {
        assignSymbolGroup(graph, addedSymbolGroup, removedSymbolGroup, symbols);
    }

    public static void assignSymbolGroup(WriteGraph graph, Collection<Resource> addedSymbolGroups, Collection<Resource> removedSymbolGroups, Collection<Resource> symbols) throws DatabaseException {
        graph.markUndoPoint();
        DiagramResource DIA = DiagramResource.getInstance(graph);
        for (Resource symbol : symbols) {
            for (Resource group : addedSymbolGroups)
                graph.claim(group, DIA.HasSymbol, symbol);
            for (Resource group : removedSymbolGroups)
                graph.deny(group, DIA.HasSymbol, symbol);
        }
    }
    
}