ComponentNodeContainerContext.java example

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jo-widgets-master
/*
 * Copyright (c) 2011, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
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 * * 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
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package org.jowidgets.workbench.impl;

import java.util.HashMap;
import java.util.Map;

import org.jowidgets.api.widgets.ITreeContainer;
import org.jowidgets.api.widgets.ITreeNode;
import org.jowidgets.util.Assert;
import org.jowidgets.workbench.api.IComponentNode;
import org.jowidgets.workbench.api.IComponentNodeContainerContext;

public class ComponentNodeContainerContext implements IComponentNodeContainerContext {

    private final ITreeContainer treeContainer;
    private final WorkbenchContext workbenchContext;
    private final WorkbenchApplicationContext applicationContext;

    private final Map<IComponentNode, ITreeNode> createdNodes;

    public ComponentNodeContainerContext(
        final ITreeContainer treeContainer,
        final WorkbenchApplicationContext applicationContext,
        final WorkbenchContext workbenchContext) {

        this.treeContainer = treeContainer;
        this.workbenchContext = workbenchContext;
        this.applicationContext = applicationContext;
        this.createdNodes = new HashMap<IComponentNode, ITreeNode>();
    }

    @Override
    public void add(final IComponentNode componentNode) {
        add(treeContainer.getChildren().size(), componentNode);
    }

    @Override
    public void add(final int index, final IComponentNode componentNode) {
        Assert.paramNotNull(componentNode, "componentNode");
        final ITreeNode node = treeContainer.addNode(index);
        createdNodes.put(componentNode, node);
        final ComponentNodeContext nodeContext = new ComponentNodeContext(
            componentNode,
            node,
            (this instanceof ComponentNodeContext) ? (ComponentNodeContext) this : null,
            applicationContext,
            workbenchContext);
        applicationContext.registerNodeContext(nodeContext);
        componentNode.onContextInitialize(nodeContext);
    }

    @Override
    public void remove(final IComponentNode componentNode) {
        Assert.paramNotNull(componentNode, "componentNode");
        final ITreeNode node = createdNodes.remove(componentNode);
        if (node != null) {
            final boolean selected = node.isSelected();
            treeContainer.removeNode(node);
            applicationContext.unRegisterNodeContext(node);
            if (selected) {
                workbenchContext.selectComponentNode(null);
            }
        }
    }

    @Override
    public WorkbenchContext getWorkbenchContext() {
        return applicationContext.getWorkbenchContext();
    }

    public WorkbenchApplicationContext getWorkbenchApplicationContext() {
        return applicationContext;
    }

}