package org.eclipse.wst.jsdt.web.ui.internal.autoedit;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.text.DocumentCommand;
import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.IDocument;
import org.eclipse.wst.html.core.text.IHTMLPartitions;
import org.eclipse.wst.jsdt.core.IJavaProject;
import org.eclipse.wst.jsdt.core.JavaCore;
import org.eclipse.wst.jsdt.internal.ui.text.java.JavaAutoIndentStrategy;
import org.eclipse.wst.jsdt.internal.ui.text.java.SmartSemicolonAutoEditStrategy;
import org.eclipse.wst.jsdt.internal.ui.text.javadoc.JavaDocAutoIndentStrategy;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;

public class AutoEditStrategyForJs implements IAutoEditStrategy{
	
	private IAutoEditStrategy[] fStrategies;
	
	public AutoEditStrategyForJs(){
		super();
	}
	
	public IAutoEditStrategy[] getAutoEditStrategies(IDocument document){
		if(fStrategies!=null) return fStrategies;
		
		String partitioning = IHTMLPartitions.SCRIPT;

		fStrategies = new IAutoEditStrategy[]{new JavaDocAutoIndentStrategy(partitioning),
											  new SmartSemicolonAutoEditStrategy(partitioning),
											 
											  new JavaAutoIndentStrategy(partitioning,  getJavaProject(document))};
		/* new AutoEditStrategyForTabs() */
		return fStrategies;
	}
	

	public void customizeDocumentCommand(IDocument document, DocumentCommand command) {
		IAutoEditStrategy[] strats = getAutoEditStrategies(document);
		for(int i=0;i<strats.length;i++){
			strats[i].customizeDocumentCommand(document, command);
		}
		
	}
	
	private IJavaProject getJavaProject(IDocument document){
	
		IDOMModel model = null;
		IJavaProject javaProject = null;
		IStructuredDocument structDoc = null;
		
		try {
                model = (IDOMModel) StructuredModelManager.getModelManager().getExistingModelForRead(document);
    			String baseLocation = model.getBaseLocation();
    			IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
    			IPath filePath = new Path(baseLocation);
    			IProject project = null;
    			if (filePath.segmentCount() > 0) {
    				project = root.getProject(filePath.segment(0));
    			}
    
    			if(project!=null)
    				javaProject = JavaCore.create(project);
           
		}finally{
			if(model!=null)	model.releaseFromRead();
		}
		return javaProject;
	}
	
}