/*
 * Copyright (c) 2011, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.jowidgets.workbench.toolkit.impl;

import org.jowidgets.api.model.item.IMenuModel;
import org.jowidgets.common.image.IImageConstant;
import org.jowidgets.tools.controller.TreeNodeAdapter;
import org.jowidgets.workbench.api.IComponent;
import org.jowidgets.workbench.api.IComponentContext;
import org.jowidgets.workbench.api.IComponentNode;
import org.jowidgets.workbench.api.IComponentNodeContext;
import org.jowidgets.workbench.api.IDisposeCallback;
import org.jowidgets.workbench.toolkit.api.IComponentNodeModel;
import org.jowidgets.workbench.toolkit.api.IWorkbenchPartModelListener;

class ComponentNode extends ComponentNodeContainer implements IComponentNode {

    private final IComponentNodeModel model;

    private String label;
    private String tooltip;
    private IImageConstant icon;
    private IMenuModel popupMenu;

    private boolean selected;
    private boolean expanded;

    private IWorkbenchPartModelListener workbenchPartModelListener;
    private IComponentNodeContext context;

    ComponentNode(final IComponentNodeModel model) {
        super(model);
        this.model = model;
        this.selected = false;
        this.expanded = false;
    }

    @Override
    public void onContextInitialize(final IComponentNodeContext context) {
        super.initialize(context);

        this.workbenchPartModelListener = new IWorkbenchPartModelListener() {
            @Override
            public void modelChanged() {
                onModelChanged(context);
            }
        };

        model.addWorkbenchPartModelListener(workbenchPartModelListener);

        context.addTreeNodeListener(new TreeNodeAdapter() {
            @Override
            public void selectionChanged(final boolean selected) {
                model.removeWorkbenchPartModelListener(workbenchPartModelListener);
                model.setSelected(selected);
                model.addWorkbenchPartModelListener(workbenchPartModelListener);
            }

            @Override
            public void expandedChanged(final boolean expanded) {
                model.removeWorkbenchPartModelListener(workbenchPartModelListener);
                model.setExpanded(expanded);
                model.addWorkbenchPartModelListener(workbenchPartModelListener);
            }
        });

        onModelChanged(context);

        if (model.getInitializeCallback() != null) {
            model.getInitializeCallback().onContextInitialize(new ModelBasedComponentNodeContext(context, model));
        }
    }

    @Override
    public void onDispose() {
        final IDisposeCallback disposeCallback = model.getDisposeCallback();
        if (disposeCallback != null) {
            disposeCallback.onDispose();
        }
    }

    @Override
    public String getId() {
        return model.getId();
    }

    @Override
    public String getLabel() {
        return model.getLabel();
    }

    @Override
    public String getTooltip() {
        return model.getTooltip();
    }

    @Override
    public IImageConstant getIcon() {
        return model.getIcon();
    }

    @Override
    public IComponent createComponent(final IComponentContext context) {
        if (model.getComponentFactory() != null) {
            return model.getComponentFactory().createComponent(model, new ModelBasedComponentContext(context, model));
        }
        return null;
    }

    private void onModelChanged(final IComponentNodeContext context) {
        if (popupMenu != model.getPopupMenu()) {
            onPopupMenuChanged(context);
        }
        if (label != model.getLabel()) {
            context.setLabel(model.getLabel());
            label = model.getLabel();
        }
        if (tooltip != model.getTooltip()) {
            context.setTooltip(model.getTooltip());
            tooltip = model.getTooltip();
        }
        if (icon != model.getIcon()) {
            context.setIcon(model.getIcon());
            icon = model.getIcon();
        }
        if (expanded != model.isExpanded()) {
            context.setExpanded(model.isExpanded());
            expanded = model.isExpanded();
        }
        if (selected != model.isSelected()) {
            context.setSelected(model.isSelected());
            selected = model.isSelected();
        }
    }

    private void onPopupMenuChanged(final IComponentNodeContext context) {
        if (popupMenu != null) {
            popupMenu.unbind(context.getPopupMenu());
        }
        if (model.getPopupMenu() != null) {
            model.getPopupMenu().bind(context.getPopupMenu());
        }
        else {
            context.getPopupMenu().removeAllItems();
        }
        popupMenu = model.getPopupMenu();
    }

    @Override
    void dispose() {
        super.dispose();
        if (context != null) {
            if (popupMenu != null) {
                popupMenu.unbind(context.getPopupMenu());
            }
            model.removeWorkbenchPartModelListener(workbenchPartModelListener);
        }
    }

}