org.eclipse.mdht.uml.cda.ui.builder.ToggleNatureAction.java Source code

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Here is the source code for org.eclipse.mdht.uml.cda.ui.builder.ToggleNatureAction.java

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/*******************************************************************************
 * Copyright (c) 2010 Sean Muir.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     Sean Muir - initial API and implementation
 *
 *******************************************************************************/
package org.eclipse.mdht.uml.cda.ui.builder;

import java.io.IOException;
import java.util.Iterator;
import java.util.jar.Attributes;
import java.util.jar.Manifest;

import org.eclipse.core.resources.ICommand;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IProjectDescription;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.mdht.uml.cda.ui.util.CDAUIUtil;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

public class ToggleNatureAction implements IObjectActionDelegate {

    /**
     * Toggles sample nature on a project
     *
     * @param project
     *            to have sample nature added or removed
     */
    public static void toggleNature(IProject project) {
        try {
            IProjectDescription description = project.getDescription();
            String[] natures = description.getNatureIds();

            for (int i = 0; i < natures.length; ++i) {
                if (CDANature.NATURE_ID.equals(natures[i])) {
                    // Remove the nature
                    String[] newNatures = new String[natures.length - 1];
                    System.arraycopy(natures, 0, newNatures, 0, i);
                    System.arraycopy(natures, i + 1, newNatures, i, natures.length - i - 1);
                    description.setNatureIds(newNatures);
                    project.setDescription(description, null);
                    return;
                }
            }

            // Add the nature
            String[] newNatures = new String[natures.length + 1];
            System.arraycopy(natures, 0, newNatures, 1, natures.length);
            newNatures[0] = CDANature.NATURE_ID;
            description.setNatureIds(newNatures);

            project.setDescription(description, null);
            // Make the CDA Build Command first
            description = project.getDescription();

            ICommand[] commands = description.getBuildSpec();

            ICommand[] newCommands = new ICommand[commands.length];

            System.arraycopy(commands, 0, newCommands, 1, commands.length - 1);

            newCommands[0] = commands[commands.length - 1];

            description.setBuildSpec(newCommands);

            if (project.getName().endsWith(".doc")) {
                String generateProject = project.getName().substring(0, project.getName().lastIndexOf(".doc"));

                IProject[] referencedProjects = description.getReferencedProjects();
                boolean hasGenerateReference = false;
                for (IProject rproject : referencedProjects) {
                    if (rproject.getName().equals(generateProject)) {
                        hasGenerateReference = true;
                        break;
                    }

                }
                if (!hasGenerateReference) {
                    IProject[] newReferencedProjects = new IProject[referencedProjects.length + 1];
                    System.arraycopy(referencedProjects, 0, newReferencedProjects, 0, referencedProjects.length);
                    newReferencedProjects[newReferencedProjects.length - 1] = ResourcesPlugin.getWorkspace()
                            .getRoot().getProject(generateProject);
                    ;
                    description.setReferencedProjects(newReferencedProjects);

                }

            }

            project.setDescription(description, null);

        } catch (CoreException e) {
        }
    }

    private ISelection selection;

    /*
     * (non-Javadoc)
     *
     * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
     */
    @SuppressWarnings("rawtypes")
    public void run(IAction action) {
        if (selection instanceof IStructuredSelection) {
            for (Iterator it = ((IStructuredSelection) selection).iterator(); it.hasNext();) {
                Object element = it.next();
                IProject project = null;
                if (element instanceof IProject) {
                    project = (IProject) element;
                } else if (element instanceof IAdaptable) {
                    project = ((IAdaptable) element).getAdapter(IProject.class);
                }
                if (project != null) {
                    toggleNature(project);
                }
            }
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action
     * .IAction, org.eclipse.jface.viewers.ISelection)
     */
    public void selectionChanged(IAction action, ISelection selection) {
        this.selection = selection;

        boolean enabled = false;
        if (selection instanceof StructuredSelection) {
            StructuredSelection structuredSelection = (StructuredSelection) selection;
            if (!structuredSelection.isEmpty()) {
                if (structuredSelection.getFirstElement() instanceof IProject) {
                    IProject project = (IProject) structuredSelection.getFirstElement();
                    try {
                        if (project.hasNature(CDANature.NATURE_ID) || project.getName().endsWith(".doc")) {
                            enabled = true;
                        } else {
                            Manifest projectManifest;
                            projectManifest = new Manifest(CDAUIUtil.getManifest(project).getContents());
                            Attributes attributes = projectManifest.getMainAttributes();
                            String requiredBundles = attributes.getValue("Require-Bundle");
                            if (requiredBundles.contains("org.eclipse.mdht.uml.cda")
                                    && CDAUIUtil.getGeneratorModelFile(project) != null) {
                                enabled = true;
                            }
                        }
                    } catch (IOException e) {
                    } catch (CoreException e) {
                    }
                }

            }
        }

        action.setEnabled(enabled);
    }

    /*
     * (non-Javadoc)
     *
     * @see
     * org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.
     * action.IAction, org.eclipse.ui.IWorkbenchPart)
     */
    public void setActivePart(IAction action, IWorkbenchPart targetPart) {
    }

}