package org.simantics.views.swt.loader;

import org.simantics.databoard.Bindings;
import org.simantics.datatypes.literal.Font;
import org.simantics.datatypes.literal.RGB;
import org.simantics.db.Resource;
import org.simantics.db.VirtualGraph;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.request.WriteRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.util.Simantics;
import org.simantics.db.layer0.variable.Variable;
import org.simantics.scenegraph.ParentNode;
import org.simantics.scenegraph.loader.ScenegraphLoader;
import org.simantics.utils.ui.widgets.TrackedModifyEvent;
import org.simantics.utils.ui.widgets.TrackedModifyListener;
import org.simantics.views.ViewUtils;
import org.simantics.views.ontology.ViewsResources;
import org.simantics.views.swt.client.base.ISWTViewNode;
import org.simantics.views.swt.client.impl.SWTTrackedText;

public class TrackedTextLoader implements ScenegraphLoader {

	final private Resource configuration;
	
	public TrackedTextLoader(Resource configuration) {
		this.configuration = configuration;
	}
	
	@Override
	public ISWTViewNode create(ParentNode<ISWTViewNode> parent, final Variable context) throws DatabaseException {
		
		SWTTrackedText node = parent.addNode(SWTTrackedText.class);
		
		node.setLayoutData(LoaderUtils.getGridData(configuration));
		node.setStyle(LoaderUtils.getStyle(configuration));
		
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TextContainer_HasText, node.getTextFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.Control_HasForeground, RGB.Integer.BINDING, node.getForegroundFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TrackedText_HasInvalidBackground, RGB.Integer.BINDING, node.getInvalidBackgroundFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TrackedText_HasInactiveBackground, RGB.Integer.BINDING, node.getInactiveBackgroundFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TrackedText_HasHoverBackground, RGB.Integer.BINDING, node.getHoverBackgroundFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TrackedText_HasEditingBackground, RGB.Integer.BINDING, node.getEditingBackgroundFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.Control_HasFont, Font.BINDING, node.getFontFunction());
		
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TextReceiver_Modifier, node.getModifierFunction());
		LoaderUtils.listen(configuration, context, ViewsResources.URIs.TextReceiver_Validator, node.getValidatorFunction());
		
		node.addModifyListener(new TrackedModifyListener() {
			
			@Override
			public void modifyText(TrackedModifyEvent e) {
				
				final String text = e.getText();
	            
	            Simantics.getSession().async(new WriteRequest(Simantics.getSession().getService(VirtualGraph.class)) {

					@Override
					public void perform(WriteGraph graph) throws DatabaseException {
						ViewsResources VIEW = ViewsResources.getInstance(graph);
						System.err.println("setParameter " + context.getURI(graph) + " -> " + text);
			            ViewUtils.setParameter(graph, context, VIEW.TrackedText_Content, text, Bindings.STRING);
					}
	            	
	            });
				
			}
			
		});
		
		return node;
		
	}
	
}