bundles/org.eclipse.e4.tools.css.editor.ui/src/org/eclipse/e4/ui/contentassist/CSSProposalProvider.java

/*
* generated by Xtext
*/
package org.eclipse.e4.ui.contentassist;

import java.util.ArrayList;
import java.util.Iterator;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.RegistryFactory;
import org.eclipse.e4.cSS.selector;
import org.eclipse.e4.cSS.impl.RulesImpl;
import org.eclipse.e4.ui.css.core.engine.CSSEngine;
import org.eclipse.e4.ui.css.swt.internal.theme.ThemeEngine;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.swt.widgets.Display;
import org.eclipse.xtext.RuleCall;
import org.eclipse.xtext.ui.editor.contentassist.ContentAssistContext;
import org.eclipse.xtext.ui.editor.contentassist.ICompletionProposalAcceptor;
/**
 * see http://www.eclipse.org/Xtext/documentation/latest/xtext.html#contentAssist on how to customize content assistant
 */
public class CSSProposalProvider extends AbstractCSSProposalProvider {
	
	String[] completions;
	boolean init = false;
	CSSEngine engine;
	
	void init() {
		IExtensionRegistry registry = RegistryFactory.getRegistry();
		IExtensionPoint extPoint = registry
				.getExtensionPoint("org.eclipse.e4.ui.css.swt.property.handler");
		ArrayList<IConfigurationElement> matchingElements = new ArrayList<IConfigurationElement>();
		ArrayList<IConfigurationElement> controlAdapters = new ArrayList<IConfigurationElement>();
		for (IExtension e : extPoint.getExtensions()) {
			IConfigurationElement[] elements = e.getConfigurationElements();
			for (int i = 0; i < elements.length; i++) {
				IConfigurationElement element = elements[i];
				controlAdapters.add(element);
				IConfigurationElement[] child = element.getChildren("property-name");
				for (int j = 0; j < child.length; j++) {
					matchingElements.add(child[j]);
				}
			}
		}
		completions = new String[matchingElements.size()];
		Iterator iter = matchingElements.iterator();
		int counter = 0;
		while (iter.hasNext()) {
			IConfigurationElement type = (IConfigurationElement) iter.next();
			completions[counter] = type.getAttribute("name");
			counter++;
		}
		
		Object themeEngine = Display.getCurrent().getData("org.eclipse.e4.ui.css.swt.theme");
		if (themeEngine instanceof ThemeEngine) {
			engine = ((ThemeEngine) themeEngine).getCSSEngine();
		}
//		Shell[] shells = Display.getCurrent().getShells();
//		if (shells.length > 0) {
//			//This is from AbstractPartRenderer, should be in IPresentationEngine
//			String OWNING_ME = "modelElement"; //$NON-NLS-1$
//			Object obj = null;
//			for (int i = 0; i < shells.length; i++) {
//				obj = shells[i].getData(OWNING_ME);
//				if (obj != null) break;
//			}
//			if (obj != null && obj instanceof MTrimmedWindow) {
//				MTrimmedWindow context = (MTrimmedWindow) obj;
//				IStylingEngine stylingengine = (IStylingEngine) context.getContext().get(IStylingEngine.SERVICE_NAME);
//				engine = (CSSEngine) stylingengine.getEngine();
//			}
//		}
//		IEclipseContext context = application.getContext();
//		IStylingEngine engine = (IStylingEngine) context
//				.get(IStylingEngine.SERVICE_NAME);
//		
		init = true;
//		for (IExtension e : extPoint.getExtensions()) {
//			for (IConfigurationElement ce : getPlatformMatches(e
//					.getConfigurationElements())) {
//				if (ce.getName().equals("theme")) {
	}
@Override
public void complete_declaration(EObject model, RuleCall ruleCall,
		ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
	if (!init) init();
//	DocumentCSS doc = engine.getDocumentCSS();
//	StyleSheetList sslist = doc.getStyleSheets();
//	for (int i = 0; i < sslist.getLength(); i++) {
//		StyleSheet ss = sslist.item(i);
//	}
//	ViewCSS view = engine.getViewCSS();
	
	RulesImpl test = (RulesImpl) model;
	EList<selector> sel = test.getSelectors();
	String[] calCompletions = null;
//	for (Iterator iterator = sel.iterator(); iterator.hasNext();) {
//		selector selector = (selector) iterator.next();
//		simple_selector selectors = selector.getSimpleselectors();
//		element_name name = selectors.getElement();
//		if (name != null) {
//			//look for element name in provider
//			if (engine instanceof CSSSWTEngineImpl) {
//				calCompletions = ((CSSSWTEngineImpl) engine).retrieveCSSPropertiesForElement(name.getName());
//			}
//		}
//		
//		//if id or classname, look
////		String elementName = name.getName();
////		engine.getCSSCompositePropertiesNames(elementName);
////		
//////		ep.getElement(element, engine)
//	}
	String[] iter = calCompletions == null ? completions : calCompletions;
	for (int i = 0; i < iter.length; i++) {
		acceptor.accept(createCompletionProposal(iter[i], context));
	}
}
}