/*
 * Copyright (c) 2005,2009 Declarative Engineering LLC.
 * All rights reserved.  This program and the accompanying materials
 * are made available under the terms of the Declarative Engineering LLC
 * verson 1 which accompanies this distribution, and is available at
 * http://declarativeengineering.com/legal/DE_Developer_License_v1.txt
 */
package com.foundation.tcv.swt.server;

import com.foundation.tcv.swt.ILink;
import com.foundation.tcv.view.ViewMessage;
import com.foundation.view.IMethodAssociation;
import com.foundation.view.SingleAssociationContainer;
import com.foundation.view.SingleResourceAssociation;

public class Link extends Component implements ILink {
	/** Called when the link is pressed. */
	private IMethodAssociation selectionMethod = null;
	/** The button's text resource. */
	private SingleResourceAssociation text = new SingleResourceAssociation(this, this, getViewContext(), SingleResourceAssociation.TYPE_TEXT, false, "");
/**
 * Link constructor.
 * @param parent A composite control which will be the parent of the new instance (cannot be null).
 * @param name The unique component name.
 * @param style The style of control to construct.
 */
public Link(Container parent, String name, int style) {
	super(parent, name, style);
	//Initialize the client component.//
	sendMessage(MESSAGE_INITIALIZE, new int[] {parent.getNumber(), style});
}//Link()//
/**
 * Sets the selection method called when the link is pressed.
 * @param selectionMethod The method called when the link is pressed.
 */
public void setSelectionMethod(IMethodAssociation selectionMethod) {
	verifyThread();
	this.selectionMethod = selectionMethod;
}//setSelectionMethod()//
/**
 * Sets the component text.
 * @param text The text that will appear in the component.
 */
public void setText(String text) {
	verifyThread();
	this.text.setDefaultValue(text);
}//setText()//
/**
 * Sets the association container used to access the text.
 * @param container The text association metadata.
 */
public void setTextAssociation(SingleAssociationContainer container) {
	verifyThread();
	this.text.setAssociations(container);
}//setTextAssociation()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.server.AbstractComponent#internalViewInitialize()
 */
protected void internalViewInitialize() {
	super.internalViewInitialize();
	text.initialize();
}//internalViewInitialize()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.server.AbstractComponent#internalViewRefresh()
 */
protected void internalViewRefresh() {
	super.internalViewRefresh();
	internalViewRefreshText();
}//internalViewRefresh()//
/**
 * Refreshes the link text.
 */
protected void internalViewRefreshText() {
	if(text.refresh()) {
		sendMessage(MESSAGE_SET_TEXT, (String) text.getValue());
	}//if//
}//internalViewRefreshText()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.server.AbstractComponent#internalViewRelease()
 */
protected void internalViewRelease() {
	super.internalViewRelease();
	text.release();
}//internalViewRelease()//
/* (non-Javadoc)
 * @see com.foundation.view.swt.AbstractComponent#internalOnValueChanged(com.foundation.view.SingleResourceAssociation)
 */
protected void internalOnValueChanged(SingleResourceAssociation resourceAssociation, int flags) {
	if(resourceAssociation == text) {
		internalViewRefreshText();
	}//else if//
	else {
		super.internalOnValueChanged(resourceAssociation, flags);
	}//else//
}//internalOnValueChanged()//
/* (non-Javadoc)
 * @see com.foundation.tcv.view.IViewComponent#processMessage(com.foundation.tcv.model.ViewMessage)
 */
public Object processMessage(ViewMessage viewMessage) {
	Object retVal = null;
	
	switch(viewMessage.getMessageNumber()) {
		case MESSAGE_VIEW_SYNCHRONIZE_SELECTION: {
			//Call the selection method.//
			selectionMethod.invoke(null, true);
			break;
		}//case//
		default: {
			retVal = super.processMessage(viewMessage);
		}//default//
	}//switch//
	
	return retVal;
}//processMessage()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.server.AbstractComponent#getClientClassName()
 */
protected String getClientClassName() {
	return "com.foundation.tcv.swt.client.Link";
}//getClientClassName()//
}//Link//