package org.simantics.browsing.ui.graph.impl;

import java.util.Map;

import org.simantics.browsing.ui.BuiltinKeys.LabelerKey;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.simantics.Simantics;
import org.simantics.browsing.ui.NodeContext;
import org.simantics.browsing.ui.PrimitiveQueryUpdater;
import org.simantics.browsing.ui.graph.impl.contribution.LabelerContributionImpl;
import org.simantics.browsing.ui.model.browsecontexts.BrowseContext;
import org.simantics.browsing.ui.model.tooltips.TooltipContribution;
import org.simantics.db.ReadGraph;
import org.simantics.db.UndoContext;
import org.simantics.db.common.request.UniqueRead;
import org.simantics.db.common.utils.RequestUtil;
import org.simantics.db.exception.DatabaseException;
import org.simantics.ui.SimanticsUI;

public class EvaluatorLabeler extends LabelerContributionImpl {
	
	final BrowseContext browseContext;
	final boolean useNodeBrowseContexts;
	
    private TooltipContribution currentTooltipContribution;
	
    public EvaluatorLabeler(PrimitiveQueryUpdater updater, NodeContext context,
			LabelerKey key,
			BrowseContext browseContext, boolean useNodeBrowseContexts) {
		super(updater, context, key);
		this.browseContext = browseContext;
		this.useNodeBrowseContexts = useNodeBrowseContexts;
	}

	@Override
    public Map<String, String> labels(
            ReadGraph graph,
            NodeContext context)
            throws DatabaseException {
    	boolean oldSynchronous = graph.setSynchronous(false); 
    	try {
    		return BrowseContext.get(graph,context,browseContext,useNodeBrowseContexts).getLabel(graph, context);
    	} finally {
    		graph.setSynchronous(oldSynchronous);
    	}
    }

    @Override
    public int category(ReadGraph graph,
            NodeContext context)
    throws DatabaseException {
        return 0;
    }
    
    public Modifier 
    getModifier(ReadGraph graph, UndoContext undoContext, 
            NodeContext context, String columnKey) throws DatabaseException {
        return BrowseContext.get(graph,context,browseContext,useNodeBrowseContexts).getModifier(graph, context, columnKey);
    }
    
    public String toString() {
    	return "EvaluatorLabeler[" + browseContext + "] " + context;
    }
    
    
    @Override
    public boolean shouldCreateToolTip(Event event, NodeContext context) {
        try {
            currentTooltipContribution = RequestUtil.trySyncRequest(
                    Simantics.getSession(),
                    SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,
                    SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,
                    null,
                    new UniqueRead<TooltipContribution>() {
                @Override
                public TooltipContribution perform(ReadGraph graph) throws DatabaseException {
                    return BrowseContext.get(graph,context,browseContext,useNodeBrowseContexts).shouldCreateToolTip(graph, event, context);
                }
            });
            if (currentTooltipContribution != null)
                return true;
        } catch (DatabaseException | InterruptedException e) {
            e.printStackTrace();
        }
        return false;
    }
    
    @Override
    public Composite createToolTipContentArea(Event event, Composite parent, NodeContext nodeContext) {
        return (Composite) currentTooltipContribution.getTooltip(event, parent, nodeContext);
    }

}