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The source code

/*
 *                 Sun Public License Notice
 * 
 * The contents of this file are subject to the Sun Public License
 * Version 1.0 (the "License"). You may not use this file except in
 * compliance with the License. A copy of the License is available at
 * http://www.sun.com/
 * 
 * The Original Code is NetBeans. The Initial Developer of the Original
 * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
 * Microsystems, Inc. All Rights Reserved.
 */

package org.netbeans.modules.form;

import java.awt.*;
import javax.swing.*;
import java.util.ArrayList;
import java.lang.reflect.Method;

import org.netbeans.modules.form.layoutsupport.*;


public class RADVisualContainer extends RADVisualComponent implements ComponentContainer {
    private ArrayList subComponents = new ArrayList(10);
    private LayoutSupportManager layoutSupport = new LayoutSupportManager();
    private LayoutNode layoutNode; // [move to LayoutSupportManager?]

    private RADMenuComponent containerMenu;

    private Method containerDelegateGetter;
    private boolean noContainerDelegate;


    public boolean initialize(FormModel formModel) {
        if (super.initialize(formModel)) {
            if (getBeanClass() != null)
                layoutSupport.initialize(this, formModel.getCodeStructure());
            return true;
        }
        return false;
    }

    protected void setBeanInstance(Object beanInstance) {
        if (isLayoutSupportSet())
            layoutSupport.clearPrimaryContainer();

        containerDelegateGetter = null;
        noContainerDelegate = false;

        super.setBeanInstance(beanInstance);

        layoutSupport.initialize(this, getFormModel().getCodeStructure());
    }

    public void setLayoutSupportDelegate(LayoutSupportDelegate layoutDelegate,
                                         LayoutManager lmInstance)
        throws Exception
    {
        layoutSupport.setLayoutDelegate(layoutDelegate, lmInstance, false);
        setLayoutNodeReference(null);
    }

    public LayoutSupportManager getLayoutSupport() {
        return layoutSupport;
    }

    public boolean isLayoutSupportSet() {
        return layoutSupport.getLayoutDelegate() != null;
    }

    /**
     * @return The JavaBean visual container represented by this
     * RADVisualComponent
     */
    
    public Container getContainerDelegate(Object container) {
        if (container instanceof RootPaneContainer
                && container.getClass().getName().startsWith("javax.swing.")) // NOI18N
            return ((RootPaneContainer)container).getContentPane();
        if (container.getClass().equals(JRootPane.class))
            return ((JRootPane)container).getContentPane();

        Container containerDelegate = (Container) container;
        Method m = getContainerDelegateMethod();
        if (m != null) {
            try {
                containerDelegate =
                    (Container) m.invoke(container, new Object[0]);
            }
            catch (Exception ex) {
                org.openide.ErrorManager.getDefault().notify(org.openide.ErrorManager.INFORMATIONAL, ex);
            }
        }
        return containerDelegate;
    }

    public Method getContainerDelegateMethod() {
        if (containerDelegateGetter == null && !noContainerDelegate) {
            String delegateGetterName = getContainerDelegateGetterName();
            if (delegateGetterName == null
                && (RootPaneContainer.class.isAssignableFrom(getBeanClass())
                    || JRootPane.class.isAssignableFrom(getBeanClass())))
                delegateGetterName = "getContentPane"; // NOI18N

            if (delegateGetterName != null) {
                try {
                    containerDelegateGetter =
                        getBeanClass().getMethod(
                            delegateGetterName, new Class[0]);
                }
                catch (NoSuchMethodException ex) {
                    org.openide.ErrorManager.getDefault().notify(org.openide.ErrorManager.INFORMATIONAL, ex);
                }
            }
            else noContainerDelegate = true;
        }
        return containerDelegateGetter;
    }

    String getContainerDelegateGetterName() {
        Object value = getBeanInfo().getBeanDescriptor()
                                        .getValue("containerDelegate"); // NOI18N
        
        if (value != null && value instanceof String)
            return (String) value;
        else
            return null;
    }

    public void setLayoutNodeReference(LayoutNode node) {
        this.layoutNode = node;
    }

    public LayoutNode getLayoutNodeReference() {
        return layoutNode;
    }

    RADMenuComponent getContainerMenu() {
        return containerMenu;
    }

    boolean canHaveMenu(Class menuClass) {
        return (JMenuBar.class.isAssignableFrom(menuClass)
                  && RootPaneContainer.class.isAssignableFrom(getBeanClass()))
               ||
               (MenuBar.class.isAssignableFrom(menuClass)
                  && Frame.class.isAssignableFrom(getBeanClass())
                  && !JFrame.class.isAssignableFrom(getBeanClass()));
    }

    // -----------------------------------------------------------------------------
    // SubComponents Management

    /** @return visual subcomponents (not the menu component) */
    public RADVisualComponent[] getSubComponents() {
        RADVisualComponent[] components = new RADVisualComponent[subComponents.size()];
        subComponents.toArray(components);
        return components;
    }

    public RADVisualComponent getSubComponent(int index) {
        return (RADVisualComponent) subComponents.get(index);
    }

    // the following methods implement ComponentContainer interface

    /** @return all subcomponents (including the menu component) */
    public RADComponent[] getSubBeans() {
        int n = subComponents.size();
        if (containerMenu != null)
            n++;

        RADComponent[] components = new RADComponent[n];
        subComponents.toArray(components);
        if (containerMenu != null)
            components[n-1] = containerMenu;

        return components;
    }

    public void initSubComponents(RADComponent[] initComponents) {
        if (subComponents == null)
            subComponents = new ArrayList(initComponents.length);
        else {
            subComponents.clear();
            subComponents.ensureCapacity(initComponents.length);
        }

        for (int i=0; i < initComponents.length; i++) {
            RADComponent comp = initComponents[i];

            if (comp instanceof RADVisualComponent)
                subComponents.add(comp);
            else if (comp instanceof RADMenuComponent)
                containerMenu = (RADMenuComponent) comp; // [what with the current menu?]
            else
                continue; // [just ignore?]

            comp.setParentComponent(this);
        }
    }

    public void reorderSubComponents(int[] perm) {
        layoutSupport.removeAll();

        RADVisualComponent[] components =
            new RADVisualComponent[subComponents.size()];
        LayoutConstraints[] constraints =
            new LayoutConstraints[subComponents.size()];

        for (int i=0; i < perm.length; i++) {
            RADVisualComponent comp = (RADVisualComponent) subComponents.get(i);
            components[perm[i]] = comp;
            constraints[perm[i]] = layoutSupport.getStoredConstraints(comp);
        }

        subComponents.clear();
        subComponents.addAll(java.util.Arrays.asList(components));

        layoutSupport.addComponents(components, constraints, 0);
    }

    public void add(RADComponent comp) {
        if (comp instanceof RADVisualComponent)
            subComponents.add(comp);
        else if (comp instanceof RADMenuComponent)
            containerMenu = (RADMenuComponent) comp;  // [what with the current menu?]
        else
            return; // [just ignore?]

        comp.setParentComponent(this);
    }

    public void remove(RADComponent comp) {
        if (comp instanceof RADVisualComponent) {
            layoutSupport.removeComponent((RADVisualComponent) comp,
                                          subComponents.indexOf(comp));
            if (subComponents.remove(comp))
                comp.setParentComponent(null);
        }
        else if (comp == containerMenu) {
            containerMenu = null;
            comp.setParentComponent(null);
        }
        else return;
    }

    public int getIndexOf(RADComponent comp) {
        if (comp != null && comp == containerMenu)
            return subComponents.size();

        return subComponents.lastIndexOf(comp);
    }
}
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