/*******************************************************************************
 * Copyright (c) 2005, 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * IBM Corporation - initial API and implementation
 * yyyymmdd bug      Email and other contact information
 * -------- -------- -----------------------------------------------------------
 * 20060403 128827   kathy@ca.ibm.com - Kathy Chan
 * 20060424   115690 sengpl@ca.ibm.com - Seng Phung-Lu
 * 20090310   242440 yenlu@ca.ibm.com - Yen Lu, Pluggable IFile to URI Converter
 *******************************************************************************/

package org.eclipse.wst.ws.internal.plugin;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Plugin;
import org.eclipse.wst.ws.internal.converter.IIFile2UriConverter;
import org.eclipse.wst.ws.internal.preferences.PersistentMergeContext;
import org.eclipse.wst.ws.internal.preferences.PersistentWSDLValidationContext;
import org.eclipse.wst.ws.internal.preferences.PersistentWSIAPContext;
import org.eclipse.wst.ws.internal.preferences.PersistentWSIContext;
import org.eclipse.wst.ws.internal.preferences.PersistentWSISSBPContext;
import org.eclipse.wst.ws.internal.preferences.PersistentWaitForWSDLValidationContext;
import org.osgi.framework.BundleContext;

/**
 * The main plugin class to be used in the desktop.
 */
public class WSPlugin extends Plugin {

	// The shared instance.
	private static WSPlugin plugin;
	
	private PersistentWSISSBPContext wsiSSBPContext_;
	private PersistentWSIAPContext wsiAPContext_;
	private PersistentWSDLValidationContext wsdlValidationContext_;
	private PersistentWaitForWSDLValidationContext waitForWsdlValidationContext_;
	private PersistentMergeContext mergeContext_;
	private IIFile2UriConverter iFile2UriConverter_;
	private boolean isIFile2UriConverterInitialized_ = false;

	public static final String ID = "org.eclipse.wst.ws";
	
	/**
	 * The constructor.
	 */
	public WSPlugin() {
		super();
		plugin = this;
	}

	/**
	 * Returns the singleton instance of this plugin. Equivalent to calling
	 * (WSPlugin)Platform.getPlugin("org.eclipse.wst.ws");
	 * @return The WSPlugin singleton.
	 */
	 static public WSPlugin getInstance() {
	   return plugin;
	 }
	 
	/**
	 * This method is called upon plug-in activation
	 */
	public void start(BundleContext context) throws Exception {
		super.start(context);
	}

	/**
	 * This method is called when the plug-in is stopped
	 */
	public void stop(BundleContext context) throws Exception {
		super.stop(context);
		plugin = null;
	}

	/**
	 * Returns the shared instance.
	 */
	public static WSPlugin getDefault() {
		return plugin;
	}


	/**
	 * Get WSI Context
	 * @deprecated use getWSISSBPContext or getWSIAPContext instead
	 * 
	 */ 
 public PersistentWSIContext getWSIContext() 
 	{ // defaulting to get WSI Simple SOAP Binding Profile context
 	  return getWSISSBPContext();
 	}
 
 /**
	 * Get WSI Simple SOAP Binding Profile Context
	 * 
	 */ 
 public PersistentWSISSBPContext getWSISSBPContext() 
	{
	  if (wsiSSBPContext_ == null)
	  	{
	  		wsiSSBPContext_ = new PersistentWSISSBPContext();
	  		wsiSSBPContext_.load();
	  	}
	  return wsiSSBPContext_;
	}
 
 /**
	 * Get WSI Attachment Profile Context
	 * 
	 */ 
 public PersistentWSIAPContext getWSIAPContext() 
	{
	  if (wsiAPContext_ == null)
	  	{
	  		wsiAPContext_ = new PersistentWSIAPContext();
	  		wsiAPContext_.load();
	  	}
	  return wsiAPContext_;
	}

	 /**
	 * Get WSDL Valiation Context
	 * 
	 */ 

	public PersistentWSDLValidationContext getWSDLValidationContext() {
		if (wsdlValidationContext_ == null) {
			wsdlValidationContext_ = new PersistentWSDLValidationContext();
			wsdlValidationContext_.load();
		}
		return wsdlValidationContext_;
	}
	
	/**
	 * Get Wait for WSDL Valiation Context
	 * 
	 */ 

	public PersistentWaitForWSDLValidationContext getWaitForWSDLValidationContext() {
		if (waitForWsdlValidationContext_ == null) {
			waitForWsdlValidationContext_ = new PersistentWaitForWSDLValidationContext();
			waitForWsdlValidationContext_.load();
		}
		return waitForWsdlValidationContext_;
	}
	
	/**
	 * Get Skeleton Merge Context
	 * 
	 */ 
 public PersistentMergeContext getMergeContext() 
	{
	  if (mergeContext_ == null)
	  	{
		  mergeContext_ = new PersistentMergeContext();
		  mergeContext_.load();
	  	}
	  return mergeContext_;
	}
 
 /**
  * <p>
  * Get the product's registered IFile to URI converter. If there is no converter registered then this method will return null.
  * @return The IFile to URI converter registered with the <code>org.eclipse.wst.ws/IFile2UriConverterId</code> preference in plugin_customization.ini
  */
 public IIFile2UriConverter getIFile2UriConverter()
 {
	 if (!isIFile2UriConverterInitialized_)
	 {
		 String productConverterId = getPluginPreferences().getDefaultString("IFile2UriConverterId");
		 if (productConverterId.length() > 0)
		 {
			 IExtension extension = Platform.getExtensionRegistry().getExtension(productConverterId);
			 if (extension != null)
			 {
			   IConfigurationElement[] configElements = extension.getConfigurationElements();
			   if (configElements.length > 0)
			   {
				 try
				 {
				   iFile2UriConverter_ = (IIFile2UriConverter)configElements[0].createExecutableExtension("class");
				 }
				 catch (CoreException e)
				 {
					 getLog().log(e.getStatus());
				 }
			   }
			 }
		 }
		 isIFile2UriConverterInitialized_ = true;
	 }
	 return iFile2UriConverter_;
 }
}