descent.internal.ui.wizards.buildpaths.newsourcepage.AddArchiveToBuildpathAction.java Source code

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Here is the source code for descent.internal.ui.wizards.buildpaths.newsourcepage.AddArchiveToBuildpathAction.java

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/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package descent.internal.ui.wizards.buildpaths.newsourcepage;

import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.SubProgressMonitor;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;

import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchPartReference;
import org.eclipse.ui.IWorkbenchSite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.part.ISetSelectionTarget;

import descent.core.IClasspathEntry;
import descent.core.IJavaElement;
import descent.core.IJavaProject;

import descent.internal.corext.buildpath.ClasspathModifier;

import descent.ui.wizards.BuildPathDialogAccess;

import descent.internal.ui.JavaPlugin;
import descent.internal.ui.JavaPluginImages;
import descent.internal.ui.wizards.NewWizardMessages;
import descent.internal.ui.wizards.buildpaths.CPListElement;

public class AddArchiveToBuildpathAction extends Action implements ISelectionChangedListener {

    private final IWorkbenchSite fSite;
    private IJavaProject fJavaProject;

    public AddArchiveToBuildpathAction(IWorkbenchSite site) {
        super(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddJarCP_label,
                JavaPluginImages.DESC_OBJS_EXTJAR);
        setToolTipText(NewWizardMessages.NewSourceContainerWorkbookPage_ToolBar_AddJarCP_tooltip);
        fSite = site;
    }

    /**
     * {@inheritDoc}
     */
    public void run() {

        final Shell shell = fSite.getShell() != null ? fSite.getShell() : JavaPlugin.getActiveWorkbenchShell();
        final IPath[] selected = BuildPathDialogAccess.chooseExternalJAREntries(shell);

        try {
            final IRunnableWithProgress runnable = new IRunnableWithProgress() {
                public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
                    try {
                        List result = addExternalJars(selected == null ? new IPath[0] : selected, fJavaProject,
                                monitor);
                        if (result != null && result.size() > 0)
                            selectAndReveal(new StructuredSelection(result));
                    } catch (CoreException e) {
                        throw new InvocationTargetException(e);
                    }
                }
            };
            PlatformUI.getWorkbench().getProgressService().run(true, false, runnable);
        } catch (final InvocationTargetException e) {
            if (e.getCause() instanceof CoreException) {
                showExceptionDialog((CoreException) e.getCause());
            } else {
                JavaPlugin.log(e);
            }
        } catch (final InterruptedException e) {
        }
    }

    protected List addExternalJars(IPath[] jarPaths, IJavaProject project, IProgressMonitor monitor)
            throws CoreException {
        if (monitor == null)
            monitor = new NullProgressMonitor();
        List addedEntries = new ArrayList();
        try {
            monitor.beginTask(NewWizardMessages.ClasspathModifier_Monitor_AddToBuildpath, 4);
            if (jarPaths != null) {
                for (int i = 0; i < jarPaths.length; i++) {
                    addedEntries.add(new CPListElement(project, IClasspathEntry.CPE_LIBRARY, jarPaths[i], null));
                }
                monitor.worked(1);

                List existingEntries = ClasspathModifier.getExistingEntries(project);
                ClasspathModifier.setNewEntry(existingEntries, addedEntries, project,
                        new SubProgressMonitor(monitor, 1));
                ClasspathModifier.commitClassPath(existingEntries, project, new SubProgressMonitor(monitor, 1));

                List result = new ArrayList(addedEntries.size());
                for (int i = 0; i < addedEntries.size(); i++) {
                    IClasspathEntry entry = ((CPListElement) addedEntries.get(i)).getClasspathEntry();
                    IJavaElement elem = project.findPackageFragmentRoot(entry.getPath());
                    if (elem != null) {
                        result.add(elem);
                    }
                }
                monitor.worked(1);
                return result;
            }
        } finally {
            monitor.done();
        }
        return null;
    }

    /**
     * {@inheritDoc}
     */
    public void selectionChanged(final SelectionChangedEvent event) {
        final ISelection selection = event.getSelection();
        if (selection instanceof IStructuredSelection) {
            setEnabled(canHandle((IStructuredSelection) selection));
        } else {
            setEnabled(canHandle(StructuredSelection.EMPTY));
        }
    }

    private boolean canHandle(IStructuredSelection selection) {
        if (selection.size() != 1)
            return false;

        Object first = selection.getFirstElement();
        if (!(first instanceof IJavaProject))
            return false;

        fJavaProject = (IJavaProject) first;
        return true;
    }

    private void showExceptionDialog(CoreException exception) {
        showError(exception, fSite.getShell(), NewWizardMessages.AddArchiveToBuildpathAction_ErrorTitle,
                exception.getMessage());
    }

    private void showError(CoreException e, Shell shell, String title, String message) {
        IStatus status = e.getStatus();
        if (status != null) {
            ErrorDialog.openError(shell, message, title, status);
        } else {
            MessageDialog.openError(shell, title, message);
        }
    }

    private void selectAndReveal(final ISelection selection) {
        // validate the input
        IWorkbenchPage page = fSite.getPage();
        if (page == null)
            return;

        // get all the view and editor parts
        List parts = new ArrayList();
        IWorkbenchPartReference refs[] = page.getViewReferences();
        for (int i = 0; i < refs.length; i++) {
            IWorkbenchPart part = refs[i].getPart(false);
            if (part != null)
                parts.add(part);
        }
        refs = page.getEditorReferences();
        for (int i = 0; i < refs.length; i++) {
            if (refs[i].getPart(false) != null)
                parts.add(refs[i].getPart(false));
        }

        Iterator itr = parts.iterator();
        while (itr.hasNext()) {
            IWorkbenchPart part = (IWorkbenchPart) itr.next();

            // get the part's ISetSelectionTarget implementation
            ISetSelectionTarget target = null;
            if (part instanceof ISetSelectionTarget)
                target = (ISetSelectionTarget) part;
            else
                target = (ISetSelectionTarget) part.getAdapter(ISetSelectionTarget.class);

            if (target != null) {
                // select and reveal resource
                final ISetSelectionTarget finalTarget = target;
                page.getWorkbenchWindow().getShell().getDisplay().asyncExec(new Runnable() {
                    public void run() {
                        finalTarget.selectReveal(selection);
                    }
                });
            }
        }
    }
}