NewPortletDropDownAction.java example

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liferay-ide-master
/*******************************************************************************
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 *
 *******************************************************************************/

package com.liferay.ide.project.ui.action;

import java.util.ArrayList;
import java.util.Arrays;

import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuCreator;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowPulldownDelegate2;
import org.eclipse.ui.PlatformUI;

/**
 * @author Greg Amerson
 * @author Kuo Zhang
 */
public class NewPortletDropDownAction extends Action implements IMenuCreator, IWorkbenchWindowPulldownDelegate2
{
    protected final static String DEFAULT_WIZARD_ID = "com.liferay.ide.eclipse.portlet.ui.wizard.portlet";//$NON-NLS-1$
    protected final static String PL_NEW = "newWizards"; //$NON-NLS-1$
    protected final static String TAG_CLASS = "class"; //$NON-NLS-1$
    protected final static String TAG_NAME = "name";//$NON-NLS-1$
    protected final static String TAG_PARAMETER = "parameter";//$NON-NLS-1$
    protected final static String TAG_VALUE = "value";//$NON-NLS-1$
    protected final static String TAG_WIZARD = "wizard";//$NON-NLS-1$
    protected Menu fMenu;
    protected Shell fWizardShell;

    public NewPortletDropDownAction()
    {
        fMenu = null;

        setMenuCreator( this );
    }

    public void dispose()
    {
    }

    public NewWizardAction[] getActionFromDescriptors( String typeAttribute )
    {
        ArrayList<NewWizardAction> containers = new ArrayList<NewWizardAction>();

        IExtensionPoint extensionPoint =
            Platform.getExtensionRegistry().getExtensionPoint( PlatformUI.PLUGIN_ID, PL_NEW );

        if( extensionPoint != null )
        {
            IConfigurationElement[] elements = extensionPoint.getConfigurationElements();

            for( IConfigurationElement element : elements )
            {
                if( element.getName().equals( TAG_WIZARD ) && isLiferayArtifactWizard( element, typeAttribute ) )
                {
                    containers.add( new NewWizardAction( element ) );
                }
            }
        }

        NewWizardAction[] actions = (NewWizardAction[]) containers.toArray( new NewWizardAction[containers.size()] );

        Arrays.sort( actions );

        return actions;
    }

    public Action getDefaultAction()
    {
        Action[] actions = getActionFromDescriptors( getTypeAttribute() );

        if( actions.length > 0 )
        {
           for( Action action: actions )
           {
               if( ( action instanceof NewWizardAction ) && action.getId().equals( DEFAULT_WIZARD_ID ) )
               {
                   return action;
               }
           }
        }

        return null;
    }

    public Menu getMenu( Control parent )
    {
        if( fMenu == null )
        {
            fMenu = new Menu( parent );

            NewWizardAction[] actions = getActionFromDescriptors( getTypeAttribute() );

            for( NewWizardAction action : actions )
            {
                action.setShell( fWizardShell );

                ActionContributionItem item = new ActionContributionItem( action );
                item.fill( fMenu, -1 );
            }

            new Separator().fill( fMenu, -1 );

            NewWizardAction[] extraActions = getActionFromDescriptors( getExtraTypeAttribute() );

            for( NewWizardAction action : extraActions )
            {
                action.setShell( fWizardShell );

                ActionContributionItem item = new ActionContributionItem( action );
                item.fill( fMenu, -1 );
            }
        }

        return fMenu;
    }

    public Menu getMenu( Menu parent )
    {
        return null;
    }

    public void init( IWorkbenchWindow window )
    {
        fWizardShell = window.getShell();
    }

    public void run( IAction action )
    {
        getDefaultAction().run();
    }

    public void selectionChanged( IAction action, ISelection selection )
    {
    }

    private boolean isLiferayArtifactWizard( IConfigurationElement element, String typeAttribute )
    {
        IConfigurationElement[] classElements = element.getChildren( TAG_CLASS );

        if( classElements.length > 0 )
        {
            for( IConfigurationElement classElement : classElements )
            {
                IConfigurationElement[] paramElements = classElement.getChildren( TAG_PARAMETER );

                for( IConfigurationElement paramElement : paramElements )
                {
                    String tagName = paramElement.getAttribute( TAG_NAME );
                    if( tagName != null && tagName.equals( typeAttribute ) )
                    {
                        return Boolean.valueOf( paramElement.getAttribute( TAG_VALUE ) ).booleanValue();
                    }
                }
            }
        }

        // old way, deprecated
        if( Boolean.valueOf( element.getAttribute( getTypeAttribute() ) ).booleanValue() )
        {
            return true;
        }

        return false;
    }

    protected String getExtraTypeAttribute()
    {
        return "liferay_extra_artifact"; //$NON-NLS-1$
    }

    protected String getTypeAttribute()
    {
        return "liferay_artifact"; //$NON-NLS-1$
    }
}