/*
 * (c) Copyright 2010-2011 AgileBirds
 *
 * This file is part of OpenFlexo.
 *
 * OpenFlexo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenFlexo is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openflexo.ie.view.widget;

import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DropTarget;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JTabbedPane;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.openflexo.components.browser.BrowserElementType;
import org.openflexo.foundation.ie.IEObject;
import org.openflexo.foundation.ie.IEWOComponent;
import org.openflexo.foundation.ie.widget.IESequenceTab;
import org.openflexo.foundation.ie.widget.IETabWidget;
import org.openflexo.foundation.ie.widget.IEWidget;
import org.openflexo.ie.view.IEContainer;
import org.openflexo.ie.view.IEViewManaging;
import org.openflexo.ie.view.IEWOComponentView;
import org.openflexo.ie.view.ViewFinder;
import org.openflexo.ie.view.controller.IEController;
import org.openflexo.ie.view.controller.dnd.IEDTListener;
import org.openflexo.selection.MouseSelectionManager;

/**
 * @author bmangez
 */
public class DropTabZone extends JTabbedPane implements IEContainer, IEViewManaging, ChangeListener {

	private IEWOComponentView _rootView;

	private IEController _ieController;

	private boolean holdsNextComputedPreferredSize = false;

	private Dimension preferredSize = null;

	public DropTabZone(IEController ieController, IETabContainerWidgetView parent) {
		super();
		_ieController = ieController;
		_parent = parent;
		_rootView = parent._componentView;
		setOpaque(false);
		this.setDropTarget(new DropTarget(this, DnDConstants.ACTION_COPY, new IEDTListener(ieController, this, parent.getModel()), true));
		addMouseListener(ieController.getIESelectionManager());
		addChangeListener(this);
	}

	public void delete() {
		removeAll();
		if (getParent() != null) {
			getParent().remove(this);
		}
	}

	public IEWidget getIEModel() {
		if (getTabCount() > 0) {
			return ((IETabWidgetView) getSelectedComponent()).getTabWidget();
		} else {
			return getTabModel();
		}
	}

	@Override
	public IEWidget getContainerModel() {
		return getIEModel();
	}

	public IESequenceTab getTabModel() {
		return _parent.getModel();
	}

	private IETabContainerWidgetView _parent;

	@Override
	public IEWOComponentView getRootView() {
		if (_rootView == null) {
			_rootView = ViewFinder.getRootView(this);
		}
		return _rootView;
	}

	@Override
	public IEWidgetView findViewForModel(IEObject object) {
		return ViewFinder.findViewForModel(this, object);
	}

	@Override
	public IEWidgetView internallyFindViewForModel(IEObject object) {
		return ViewFinder.internallyFindViewForModel(this, object);
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see javax.swing.event.ChangeListener#stateChanged(javax.swing.event.ChangeEvent)
	 */
	@Override
	public void stateChanged(ChangeEvent arg0) {
		IETabWidgetView selectedView = (IETabWidgetView) getSelectedComponent();
		if (selectedView != null) {
			if (!selectedView.getTabVisibility()) {
				Component[] comps = getComponents();
				for (Component c : comps) {
					if (c instanceof IETabWidgetView) {
						((IETabWidgetView) c).setTabVisibility(false);
					}
				}
				selectedView.setTabVisibility(true);

			}
			((MouseSelectionManager) _ieController.getSelectionManager()).processMouseClicked(selectedView, new Point(1, 1), 1, false);
		}
	}

	public void updateTabInsertion(IETabWidget newTab, int index) {
		IEReusableWidgetView view = (IEReusableWidgetView) _rootView.getViewForWidget(newTab, false);
		view.setName(newTab.getTitle());
		try {
			add(view, index);
			if (((IESequenceTab) newTab.getParent()).isConditional()) {
				setIconAt(index, BrowserElementType.CONDITIONAL.getIcon());
			} else {
				setIconAt(index, null);
			}
			validate();
		} catch (Exception e) {
			e.printStackTrace();
		}
		revalidate();
		repaint();
		setSelectedComponent(view);
	}

	public void updateTabReodering() {
		Component c = getSelectedComponent();
		Vector<IETabWidgetView> orderedView = new Vector<IETabWidgetView>();
		Enumeration<IETabWidget> en = getTabModel().getAllTabs().elements();
		while (en.hasMoreElements()) {
			orderedView.add((IETabWidgetView) findViewForModel(en.nextElement()));
		}
		removeAll();
		Enumeration<IETabWidgetView> en1 = orderedView.elements();
		int i = 0;
		while (en1.hasMoreElements()) {
			add(en1.nextElement(), i);
			i++;
		}
		updateConditionalIcons();
		if (c != null && indexOfComponent(c) > -1) {
			setSelectedComponent(c);
		}
	}

	/**
	 * Overrides setSelectedIndex
	 * 
	 * @see javax.swing.JTabbedPane#setSelectedIndex(int)
	 */
	@Override
	public void setSelectedIndex(int index) {
		if (getSelectedComponent() instanceof IETabWidgetView) {
			((IETabWidgetView) getSelectedComponent()).setTabVisibility(false);
		}
		if (getComponentAt(index) instanceof IETabWidgetView) {
			((IETabWidgetView) getComponentAt(index)).setTabVisibility(true);
		}
		super.setSelectedIndex(index);
	}

	/**
     *
     */
	public void updateConditionalIcons() {
		for (int i = 0; i < getTabCount(); i++) {
			Component component = getComponentAt(i);
			if (((IESequenceTab) ((IETabWidgetView) component).getTabWidget().getParent()).isConditional()) {
				setIconAt(i, BrowserElementType.CONDITIONAL.getIcon());
			} else {
				setIconAt(i, null);
			}
		}
	}

	@Override
	public IEWOComponent getWOComponent() {
		return getTabModel().getWOComponent();
	}
}