/*
 * 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.impl;

import org.jowidgets.api.model.IListModelListener;
import org.jowidgets.api.model.item.IMenuModel;
import org.jowidgets.api.widgets.ITreeNode;
import org.jowidgets.common.image.IImageConstant;
import org.jowidgets.common.widgets.controller.ITreeNodeListener;
import org.jowidgets.tools.controller.ListModelAdapter;
import org.jowidgets.tools.controller.TreeNodeAdapter;
import org.jowidgets.tools.controller.TreeNodeObservable;
import org.jowidgets.tools.model.item.MenuModel;
import org.jowidgets.tools.types.VetoHolder;
import org.jowidgets.workbench.api.IComponentNode;
import org.jowidgets.workbench.api.IComponentNodeContext;

public class ComponentNodeContext extends ComponentNodeContainerContext implements IComponentNodeContext {

    private final ComponentNodeContext parentNodeContext;
    private final TreeNodeObservable treeNodeObservable;

    private final IComponentNode componentNode;
    private final ITreeNode treeNode;
    private final IListModelListener popupMenuListener;
    private final ITreeNodeListener treeNodeListener;
    private final IMenuModel popupMenuModel;

    private ComponentContext componentContext;
    private boolean active;

    public ComponentNodeContext(
        final IComponentNode componentNode,
        final ITreeNode treeNode,
        final ComponentNodeContext parentNodeContext,
        final WorkbenchApplicationContext applicationContext,
        final WorkbenchContext workbenchContext) {

        super(treeNode, applicationContext, workbenchContext);

        this.active = false;

        this.treeNodeObservable = new TreeNodeObservable();
        this.parentNodeContext = parentNodeContext;
        this.componentNode = componentNode;

        this.treeNode = treeNode;
        this.treeNode.setText(componentNode.getLabel());
        this.treeNode.setToolTipText(componentNode.getTooltip());
        if (componentNode.getIcon() != null) {
            this.treeNode.setIcon(componentNode.getIcon());
        }

        this.treeNodeListener = createTreeNodeListener();
        treeNode.addTreeNodeListener(treeNodeListener);

        this.popupMenuModel = new MenuModel();
        this.popupMenuListener = createPopupMenuListener();
        popupMenuModel.addListModelListener(popupMenuListener);
    }

    public void activate() {
        this.active = true;
        getComponentContextLazy().activate();
    }

    public boolean isActive() {
        return active;
    }

    public VetoHolder tryDeactivate() {
        final VetoHolder vetoHolder = getComponentContextLazy().deactivate();
        if (!vetoHolder.hasVeto()) {
            this.active = false;
        }
        return vetoHolder;
    }

    @Override
    public void setSelected(final boolean selected) {
        treeNode.setSelected(selected);
    }

    @Override
    public void setLabel(final String label) {
        treeNode.setText(label);
    }

    @Override
    public void setTooltip(final String tooltip) {
        treeNode.setToolTipText(tooltip);
    }

    @Override
    public void setIcon(final IImageConstant icon) {
        treeNode.setIcon(icon);
    }

    @Override
    public void setExpanded(final boolean expanded) {
        treeNode.setExpanded(expanded);
    }

    @Override
    public ComponentNodeContext getParent() {
        return parentNodeContext;
    }

    @Override
    public IMenuModel getPopupMenu() {
        return popupMenuModel;
    }

    @Override
    public void addTreeNodeListener(final ITreeNodeListener listener) {
        treeNodeObservable.addTreeNodeListener(listener);
    }

    @Override
    public void removeTreeNodeListener(final ITreeNodeListener listener) {
        treeNodeObservable.removeTreeNodeListener(listener);
    }

    protected String getGlobalId() {
        if (getParent() != null) {
            return getParent().getGlobalId() + "#" + componentNode.getId();
        }
        else {
            return componentNode.getId();
        }
    }

    protected ITreeNode getTreeNode() {
        return treeNode;
    }

    protected void dispose() {
        componentNode.onDispose();
        if (componentContext != null) {
            componentContext.onDispose();
        }
        popupMenuModel.removeListModelListener(popupMenuListener);
        treeNode.removeTreeNodeListener(treeNodeListener);
    }

    private IListModelListener createPopupMenuListener() {
        return new ListModelAdapter() {

            @Override
            public void afterChildRemoved(final int index) {
                if (popupMenuModel.getChildren().size() == 0) {
                    treeNode.setPopupMenu(null);
                }
            }

            @Override
            public void afterChildAdded(final int index) {
                if (popupMenuModel.getChildren().size() == 1) {
                    treeNode.setPopupMenu(popupMenuModel);
                }
            }
        };
    }

    private ITreeNodeListener createTreeNodeListener() {
        return new TreeNodeAdapter() {
            @Override
            public void selectionChanged(final boolean selected) {
                treeNodeObservable.fireSelectionChanged(selected);
            }

            @Override
            public void expandedChanged(final boolean expanded) {
                treeNodeObservable.fireExpandedChanged(expanded);
            }
        };
    }

    private ComponentContext getComponentContextLazy() {
        if (componentContext == null) {
            componentContext = new ComponentContext(componentNode, this);
        }
        return componentContext;
    }

}