/*
 * Copyright (c) 2003,2009 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.client;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Composite;

import com.common.util.*;
import com.foundation.tcv.swt.*;
import com.foundation.tcv.view.*;

public abstract class Container extends ScrollableComponent implements IContainer, IAbstractSwtContainer {
	/** A collection of components contained by this container. */
	private IList components = new LiteList(10, 30);
	/** The layout used by the container. */
	private Layout layout = null;
/**
 * Container constructor.
 */
public Container() {
}//Container()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.IAbstractSwtContainer#getSwtComposite()
 */
public Composite getSwtComposite() {
	return (Composite) getSwtControl();
}//getComposite()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.IAbstractSwtContainer#getSwtParent()
 */
public Composite getSwtParent() {
	return (Composite) getSwtControl();
}//getSwtParent()//
/**
 * Adds a component as a child of this container.
 * @param component The component to be contained by this container.
 */
public void addComponent(Component component) {
	components.add(component);
}//addComponent()//
/**
 * Removes a component that was child of this container.
 * @param component The component to no longer be contained by this container.
 */
public void removeComponent(Component component) {
	components.remove(component);
}//removeComponent()//
/**
 * Gets the collection of components contained by this container.
 * @return The collection of all contained components.
 */
public IList getComponents() {
	return components;
}//getComponents()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.Component#getFocusControl()
 */
protected Control getFocusControl() {
	Control result = getSwtControl().isFocusControl() ? getSwtControl() : null;
	
	if(result != null) {
		for(int index = 0; (result == null) && (index < getComponents().getSize()); index++) {
			Component component = (Component) getComponents().get(index);
			
			result = component.getFocusControl();
		}//for//
	}//if//
	
	return result;
}//getFocusControl()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewInitializeAll()
 */
protected void internalViewInitializeAll() {
	IList components = getComponents();
	IIterator iterator = components.iterator();
	
	//Initialize all contained components that are not value holders.//
	while(iterator.hasNext()) {
		Component component = (Component) iterator.next();
			
		component.internalViewInitializeAll();
	}//for//
	
	super.internalViewInitializeAll();
}//internalViewInitializeAll()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewReleaseAll()
 */
protected void internalViewReleaseAll() {
	IIterator iterator = new LiteList(getComponents()).iterator();
	
	//Release sub-components.//
	while(iterator.hasNext()) {
		Component component = (Component) iterator.next();
			
		component.internalViewReleaseAll();
	}//for//
	
	super.internalViewReleaseAll();
}//internalViewReleaseAll()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewSynchronizeAll()
 */
protected void internalViewSynchronizeAll() {
	IIterator iterator = components.iterator();
		
	//Synchronize sub-components.//
	while(iterator.hasNext()) {
		Component component = (Component) iterator.next();
			
		component.internalViewSynchronizeAll();
	}//for//
	
	super.internalViewSynchronizeAll();
}//internalViewSynchronizeAll()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewInitialize()
 */
protected void internalViewInitialize() {
	super.internalViewInitialize();
	
	if(layout != null) {
		layout.initialize();
		getSwtParent().setLayout(layout.createLayout(null));
	}//if//
}//internalViewInitialize()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewRelease()
 */
protected void internalViewRelease() {
	if(layout != null) {
		layout.release();
	}//if//
	
	super.internalViewRelease();
}//internalViewRelease()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalViewSynchronize()
 */
protected void internalViewSynchronize() {
	super.internalViewSynchronize();
	
	if(layout != null) {
		layout.synchronize();
	}//if//
}//internalViewSynchronize()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.AbstractComponent#internalProcessMessage(com.foundation.tcv.model.ViewMessage)
 */
public Object internalProcessMessage(ViewMessage viewMessage) {
	Object result = null;
	
	switch(viewMessage.getMessageNumber()) {
		case MESSAGE_LAYOUT: {
			layout();
			break;
		}//case//
		case MESSAGE_SET_TAB_ORDER: {
			int[] componentNumbers = (int[]) viewMessage.getMessageData();
			Control[] array = new Control[componentNumbers.length];

			for(int index = 0; index < componentNumbers.length; index++) {
				array[index] = getComponent(componentNumbers[index]) instanceof Container ? ((Container) getComponent(componentNumbers[index])).getSwtParent() : ((Component) getComponent(componentNumbers[index])).getSwtControl();
			}//for//
			
			getSwtParent().setTabList(array);
			break;
		}//case//
		case MESSAGE_CENTER: {
			long[] centerOnView = (long[]) viewMessage.getMessageData();
			
			if(centerOnView != null) {
				center(centerOnView);
			}//if//
			else {
				center();
			}//else//
			break;
		}//case//
		case MESSAGE_INHERIT_BACKGROUND: {
			int inheritType = viewMessage.getMessageInteger();
			int mode = inheritType == INHERIT_FORCE ? SWT.INHERIT_FORCE : inheritType == INHERIT_DEFAULT ? SWT.INHERIT_DEFAULT : SWT.INHERIT_NONE;
			
			getSwtComposite().setBackgroundMode(mode);
			
			if(getSwtParent() != getSwtComposite()) {
				getSwtParent().setBackgroundMode(mode);
			}//if//
			break;
		}//case//
		case MESSAGE_PACK: {
			if(!isSuspendingLayouts()) {
				if(viewMessage.getMessageData() instanceof Boolean) {
					getSwtParent().pack(((Boolean) viewMessage.getMessageData()).booleanValue());
				}//if//
				else {
					getSwtParent().pack();
				}//else//
				
				internalPack();
			}//if//
			break;
		}//case//
		default: {
			result = super.internalProcessMessage(viewMessage);
		}//case//
	}//switch//
	
	return result;
}//internalProcessMessage()//
/**
 * Centers the view on the primary monitor.
 */
protected void center() {
	//Does nothing.  This should be overloaded for subclasses which are capable of standalone behavior (window, frame, etc).//
}//center()//
/**
 * Centers the view on the primary monitor.
 * @param centerOnView The view to center on.  If this is null then it will center on the primary monitor.
 */
protected void center(long[] centerOnView) {
	//Does nothing.  This should be overloaded for subclasses which are capable of standalone behavior (window, frame, etc).//
}//center()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.Component#internalSetEnabledState(boolean, boolean)
 */
protected void internalSetEnabledState(boolean isEnabled, boolean isLocal) {
	IIterator iterator = getComponents().iterator();
	
	if(isLocal) {
		isLocallyEnabled = isEnabled;
	}//if//
	else {
		isParentEnabled = isEnabled;
	}//else//
	
	if(getSwtControl().getEnabled() != isLocallyEnabled && isParentEnabled) {
		//Update the control's state.//
		getSwtControl().setEnabled(isLocallyEnabled && isParentEnabled);
		
		//Enable or disable all the contained components.//
		while(iterator.hasNext()) {
			AbstractComponent next = (AbstractComponent) iterator.next();
			
			if(next instanceof Component) {
				((Component) next).internalSetEnabledState(isEnabled, false);
			}//if//
		}//while//
	}//if//
}//internalSetEnabledState()//
/**
 * Tells the container to layout the components contained within it.
 */
public final void layout() {
	if(!isSuspendingLayouts()) {
		getSwtParent().layout(true, true);
		internalLayout();
	}//if//
}//layout()//
/* (non-Javadoc)
 * @see com.foundation.view.swt.AbstractComponent#internalPack()
 */
protected void internalPack() {
	//Call internalPack on all sub-components.//
	for(int index = 0; index < getComponents().getSize(); index++) {
		((AbstractComponent) getComponents().get(index)).internalPack();
	}//for//
}//internalPack()//
/* (non-Javadoc)
 * @see com.foundation.view.swt.AbstractComponent#internalLayout()
 */
protected void internalLayout() {
	//Call internalLayout on all sub-components.//
	for(int index = 0; index < getComponents().getSize(); index++) {
		((AbstractComponent) getComponents().get(index)).internalLayout();
	}//for//
}//internalLayout()//
/**
 * Called after a child resizes.
 * This allows the opportunity for the container to appropriately handle the resize of children.
 */
public void postResize() {
	if(getContainer() != null) {
		getContainer().postResize();
	}//if//
}//postResize()//
/**
 * Gets the layout for this container.
 * @return The container's layout.
 */
public Layout getLayout() {
	return layout;
}//getLayout()//
/* (non-Javadoc)
 * @see com.foundation.tcv.swt.client.IAbstractSwtContainer#setLayout(com.foundation.tcv.swt.client.Layout)
 */
public void setLayout(Layout layout) {
	this.layout = layout;
}//setLayout()//
}//Container//