Examples with ViewerDropAdapter org.eclipse.jface.viewers.ViewerDropAdapter used on opensource projects

Example 1 with ViewerDropAdapter

use of org.eclipse.jface.viewers.ViewerDropAdapter in project bndtools by bndtools.

the class RepositoryBundleSelectionPart method createSection.

void createSection(Section section, FormToolkit toolkit) {
    // Toolbar buttons
    ToolBar toolbar = new ToolBar(section, SWT.FLAT);
    section.setTextClient(toolbar);
    fillToolBar(toolbar);
    Composite composite = toolkit.createComposite(section);
    section.setClient(composite);
    table = toolkit.createTable(composite, SWT.FULL_SELECTION | SWT.MULTI | SWT.BORDER | SWT.H_SCROLL);
    viewer = new TableViewer(table);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(getLabelProvider());
    // Listeners
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            ToolItem remove = getRemoveItemTool();
            if (remove != null)
                remove.setEnabled(isRemovable(event.getSelection()));
        }
    });
    ViewerDropAdapter dropAdapter = new ViewerDropAdapter(viewer) {

        @Override
        public void dragEnter(DropTargetEvent event) {
            super.dragEnter(event);
            event.detail = DND.DROP_COPY;
        }

        @Override
        public boolean validateDrop(Object target, int operation, TransferData transferType) {
            if (FileTransfer.getInstance().isSupportedType(transferType))
                return true;
            if (ResourceTransfer.getInstance().isSupportedType(transferType))
                return true;
            if (URLTransfer.getInstance().isSupportedType(transferType))
                return true;
            ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
            if (selection.isEmpty() || !(selection instanceof IStructuredSelection)) {
                return false;
            }
            Iterator<?> iterator = ((IStructuredSelection) selection).iterator();
            while (iterator.hasNext()) {
                if (!selectionIsDroppable(iterator.next())) {
                    return false;
                }
            }
            return true;
        }

        private boolean selectionIsDroppable(Object element) {
            return element instanceof RepositoryBundle || element instanceof RepositoryBundleVersion || element instanceof ProjectBundle || element instanceof RepositoryResourceElement;
        }

        @Override
        public boolean performDrop(Object data) {
            TransferData transfer = getCurrentEvent().currentDataType;
            if (URLTransfer.getInstance().isSupportedType(transfer)) {
                String urlStr = (String) URLTransfer.getInstance().nativeToJava(transfer);
                return handleURLDrop(urlStr);
            } else if (data instanceof String[]) {
                return handleFileNameDrop((String[]) data);
            } else if (data instanceof IResource[]) {
                return handleResourceDrop((IResource[]) data);
            } else {
                return handleSelectionDrop();
            }
        }

        private boolean handleResourceDrop(IResource[] resources) {
            File[] files = new File[resources.length];
            for (int i = 0; i < resources.length; i++) {
                files[i] = resources[i].getLocation().toFile();
            }
            return handleFileDrop(files);
        }

        private boolean handleFileNameDrop(String[] paths) {
            File[] files = new File[paths.length];
            for (int i = 0; i < paths.length; i++) {
                files[i] = new File(paths[i]);
            }
            return handleFileDrop(files);
        }

        private boolean handleFileDrop(File[] files) {
            if (files.length > 0) {
                BndPreferences prefs = new BndPreferences();
                boolean hideWarning = prefs.getHideWarningExternalFile();
                if (!hideWarning) {
                    MessageDialogWithToggle dialog = MessageDialogWithToggle.openWarning(getSection().getShell(), "Add External Files", "External files cannot be directly added to a project, they must be added to a local repository first.", "Do not show this warning again.", false, null, null);
                    if (Window.CANCEL == dialog.getReturnCode())
                        return false;
                    if (dialog.getToggleState()) {
                        prefs.setHideWarningExternalFile(true);
                    }
                }
                AddFilesToRepositoryWizard wizard = new AddFilesToRepositoryWizard(null, files);
                WizardDialog dialog = new WizardDialog(getSection().getShell(), wizard);
                if (Window.OK == dialog.open()) {
                    List<Pair<String, String>> addingBundles = wizard.getSelectedBundles();
                    List<VersionedClause> addingClauses = new ArrayList<VersionedClause>(addingBundles.size());
                    for (Pair<String, String> addingBundle : addingBundles) {
                        Attrs attribs = new Attrs();
                        attribs.put(Constants.VERSION_ATTRIBUTE, addingBundle.getSecond());
                        addingClauses.add(new VersionedClause(addingBundle.getFirst(), attribs));
                    }
                    handleAdd(addingClauses);
                }
                return true;
            }
            return false;
        }

        private boolean handleSelectionDrop() {
            ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
            if (selection.isEmpty() || !(selection instanceof IStructuredSelection)) {
                return false;
            }
            List<VersionedClause> adding = new LinkedList<VersionedClause>();
            Iterator<?> iterator = ((IStructuredSelection) selection).iterator();
            while (iterator.hasNext()) {
                Object item = iterator.next();
                if (item instanceof RepositoryBundle) {
                    VersionedClause newClause = RepositoryBundleUtils.convertRepoBundle((RepositoryBundle) item);
                    adding.add(newClause);
                } else if (item instanceof RepositoryBundleVersion) {
                    RepositoryBundleVersion bundleVersion = (RepositoryBundleVersion) item;
                    VersionedClause newClause = RepositoryBundleUtils.convertRepoBundleVersion(bundleVersion, phase);
                    adding.add(newClause);
                } else if (item instanceof RepositoryResourceElement) {
                    RepositoryResourceElement elt = (RepositoryResourceElement) item;
                    VersionedClause newClause = RepositoryBundleUtils.convertRepoBundleVersion(elt.getRepositoryBundleVersion(), phase);
                    adding.add(newClause);
                }
            }
            handleAdd(adding);
            return true;
        }

        private boolean handleURLDrop(String urlStr) {
            try {
                URI uri = new URI(sanitizeUrl(urlStr));
                AddJpmDependenciesWizard wizard = new AddJpmDependenciesWizard(uri);
                WizardDialog dialog = new WizardDialog(getSection().getShell(), wizard);
                if (dialog.open() == Window.OK) {
                    Set<ResourceDescriptor> resources = wizard.getResult();
                    List<VersionedClause> newBundles = new ArrayList<VersionedClause>(resources.size());
                    for (ResourceDescriptor resource : resources) {
                        Attrs attrs = new Attrs();
                        attrs.put(Constants.VERSION_ATTRIBUTE, resource.version != null ? resource.version.toString() : Version.emptyVersion.toString());
                        VersionedClause clause = new VersionedClause(resource.bsn, attrs);
                        newBundles.add(clause);
                    }
                    handleAdd(newBundles);
                    return true;
                }
                return false;
            } catch (URISyntaxException e) {
                MessageDialog.openError(getSection().getShell(), "Error", "The dropped URL was invalid: " + urlStr);
                return false;
            }
        }

        private String sanitizeUrl(String urlStr) {
            int newline = urlStr.indexOf('\n');
            if (newline > -1)
                return urlStr.substring(0, newline).trim();
            return urlStr;
        }

        private void handleAdd(Collection<VersionedClause> newClauses) {
            if (newClauses == null || newClauses.isEmpty())
                return;
            List<VersionedClause> toAdd = new LinkedList<VersionedClause>();
            for (VersionedClause newClause : newClauses) {
                boolean found = false;
                for (ListIterator<VersionedClause> iter = bundles.listIterator(); iter.hasNext(); ) {
                    VersionedClause existing = iter.next();
                    if (newClause.getName().equals(existing.getName())) {
                        int index = iter.previousIndex();
                        iter.set(newClause);
                        viewer.replace(newClause, index);
                        found = true;
                        break;
                    }
                }
                if (!found)
                    toAdd.add(newClause);
            }
            bundles.addAll(toAdd);
            viewer.add(toAdd.toArray());
            markDirty();
        }
    };
    dropAdapter.setFeedbackEnabled(false);
    dropAdapter.setExpandEnabled(false);
    viewer.addDropSupport(DND.DROP_COPY | DND.DROP_MOVE, new Transfer[] { LocalSelectionTransfer.getTransfer(), FileTransfer.getInstance(), ResourceTransfer.getInstance(), URLTransfer.getInstance() }, dropAdapter);
    table.addKeyListener(new KeyAdapter() {

        @Override
        public void keyReleased(KeyEvent e) {
            if (e.character == SWT.DEL) {
                doRemove();
            } else if (e.character == '+') {
                doAdd();
            }
        }
    });
    // Layout
    GridLayout layout = new GridLayout(1, false);
    layout.horizontalSpacing = 0;
    layout.verticalSpacing = 0;
    layout.marginHeight = 0;
    layout.marginWidth = 0;
    composite.setLayout(layout);
    GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true);
    gd.widthHint = 50;
    gd.heightHint = getTableHeightHint();
    table.setLayoutData(gd);
}

Example 2 with ViewerDropAdapter

use of org.eclipse.jface.viewers.ViewerDropAdapter in project bndtools by bndtools.

the class RepositoriesView method createPartControl.

@Override
public void createPartControl(final Composite parent) {
    // CREATE CONTROLS
    final StackLayout stackLayout = new StackLayout();
    parent.setLayout(stackLayout);
    FormToolkit toolkit = new FormToolkit(parent.getDisplay());
    Composite defaultParent = toolkit.createComposite(parent, SWT.NONE);
    FillLayout fill = new FillLayout();
    fill.marginHeight = 5;
    fill.marginWidth = 5;
    defaultParent.setLayout(fill);
    if (!Central.hasWorkspaceDirectory()) {
        FormText form = toolkit.createFormText(defaultParent, true);
        form.setText("<form><p>No workspace configuration found. <a>Create a new Bnd workspace...</a></p></form>", true, false);
        form.addHyperlinkListener(new HyperlinkAdapter() {

            @Override
            public void linkActivated(HyperlinkEvent e) {
                IWorkbench workbench = PlatformUI.getWorkbench();
                IWorkbenchWindow window = workbench.getActiveWorkbenchWindow();
                WorkspaceSetupWizard wizard = new WorkspaceSetupWizard();
                wizard.init(workbench, StructuredSelection.EMPTY);
                WizardDialog dialog = new WizardDialog(window.getShell(), wizard);
                dialog.open();
            }
        });
    } else {
        toolkit.createLabel(defaultParent, "Repositories are loading, please wait...");
    }
    stackLayout.topControl = defaultParent;
    parent.layout();
    final Composite mainPanel = new Composite(parent, SWT.NONE);
    filterPanel = filterPart.createControl(mainPanel, 5, 5);
    Tree tree = new Tree(mainPanel, SWT.FULL_SELECTION | SWT.MULTI);
    filterPanel.setBackground(tree.getBackground());
    viewer = new TreeViewer(tree);
    contentProvider = new SearchableRepositoryTreeContentProvider() {

        @Override
        public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
            super.inputChanged(viewer, oldInput, newInput);
            if (newInput != null) {
                stackLayout.topControl = mainPanel;
                advancedSearchAction.setEnabled(true);
                refreshAction.setEnabled(true);
                collapseAllAction.setEnabled(true);
                configureOfflineAction();
                parent.layout();
            }
        }
    };
    viewer.setContentProvider(contentProvider);
    ColumnViewerToolTipSupport.enableFor(viewer);
    viewer.setLabelProvider(new RepositoryTreeLabelProvider(false));
    getViewSite().setSelectionProvider(viewer);
    Central.addRepositoriesViewer(viewer, RepositoriesView.this);
    JpmPreferences jpmPrefs = new JpmPreferences();
    final boolean showJpmOnClick = jpmPrefs.getBrowserSelection() != JpmPreferences.PREF_BROWSER_EXTERNAL;
    // LISTENERS
    filterPart.addPropertyChangeListener(new PropertyChangeListener() {

        @Override
        public void propertyChange(PropertyChangeEvent event) {
            String filter = (String) event.getNewValue();
            updatedFilter(filter);
        }
    });
    ViewerDropAdapter dropAdapter = new ViewerDropAdapter(viewer) {

        @Override
        public boolean validateDrop(Object target, int operation, TransferData transferType) {
            if (target == null)
                return false;
            if (canDrop(target, transferType))
                return true;
            boolean valid = false;
            if (target instanceof RepositoryPlugin) {
                if (((RepositoryPlugin) target).canWrite()) {
                    if (URLTransfer.getInstance().isSupportedType(transferType))
                        return true;
                    if (LocalSelectionTransfer.getTransfer().isSupportedType(transferType)) {
                        ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
                        if (selection instanceof IStructuredSelection) {
                            for (Iterator<?> iter = ((IStructuredSelection) selection).iterator(); iter.hasNext(); ) {
                                Object element = iter.next();
                                if (element instanceof RepositoryBundle || element instanceof RepositoryBundleVersion) {
                                    valid = true;
                                    break;
                                }
                                if (element instanceof IFile) {
                                    valid = true;
                                    break;
                                }
                                if (element instanceof IAdaptable) {
                                    IFile file = (IFile) ((IAdaptable) element).getAdapter(IFile.class);
                                    if (file != null) {
                                        valid = true;
                                        break;
                                    }
                                }
                            }
                        }
                    } else {
                        valid = true;
                    }
                }
            }
            return valid;
        }

        @Override
        public void dragEnter(DropTargetEvent event) {
            super.dragEnter(event);
            event.detail = DND.DROP_COPY;
        }

        @Override
        public boolean performDrop(Object data) {
            if (RepositoriesView.this.performDrop(getCurrentTarget(), getCurrentEvent().currentDataType, data)) {
                viewer.refresh(getCurrentTarget(), true);
                return true;
            }
            boolean copied = false;
            if (URLTransfer.getInstance().isSupportedType(getCurrentEvent().currentDataType)) {
                try {
                    URL url = new URL((String) URLTransfer.getInstance().nativeToJava(getCurrentEvent().currentDataType));
                    if (!url.getPath().endsWith(".jar")) {
                        String uris = url.toString();
                        if (uris.contains("#!/p/sha/")) {
                            MessageDialog.openWarning(null, "Dropped URL is a JPM Revision Identifier, not a JAR", "The dropped URL is a JPM identifier, can only be dropped on a JPM repository. You can also select the revision on JPM and drag the 'jar' link of the revision to any of the other repositories.");
                            return false;
                        }
                    }
                    File tmp = File.createTempFile("dwnl", ".jar");
                    try (HttpClient client = new HttpClient()) {
                        IO.copy(client.connect(url), tmp);
                    }
                    if (isJarFile(tmp)) {
                        copied = addFilesToRepository((RepositoryPlugin) getCurrentTarget(), new File[] { tmp });
                    } else {
                        tmp.delete();
                        MessageDialog.openWarning(null, "Unrecognized Artifact", "The dropped URL is not recognized as a remote JAR file: " + url.toString());
                    }
                } catch (Exception e) {
                    return false;
                }
            } else if (data instanceof String[]) {
                String[] paths = (String[]) data;
                File[] files = new File[paths.length];
                for (int i = 0; i < paths.length; i++) {
                    files[i] = new File(paths[i]);
                }
                copied = addFilesToRepository((RepositoryPlugin) getCurrentTarget(), files);
            } else if (data instanceof IResource[]) {
                IResource[] resources = (IResource[]) data;
                File[] files = new File[resources.length];
                for (int i = 0; i < resources.length; i++) {
                    files[i] = resources[i].getLocation().toFile();
                }
                copied = addFilesToRepository((RepositoryPlugin) getCurrentTarget(), files);
            } else if (data instanceof IStructuredSelection) {
                File[] files = convertSelectionToFiles((IStructuredSelection) data);
                if (files != null && files.length > 0)
                    copied = addFilesToRepository((RepositoryPlugin) getCurrentTarget(), files);
            }
            return copied;
        }
    };
    dropAdapter.setFeedbackEnabled(false);
    dropAdapter.setExpandEnabled(false);
    viewer.addDropSupport(DND.DROP_COPY | DND.DROP_MOVE, new Transfer[] { URLTransfer.getInstance(), FileTransfer.getInstance(), ResourceTransfer.getInstance(), LocalSelectionTransfer.getTransfer() }, dropAdapter);
    viewer.addDragSupport(DND.DROP_COPY | DND.DROP_MOVE, new Transfer[] { LocalSelectionTransfer.getTransfer() }, new SelectionDragAdapter(viewer));
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(SelectionChangedEvent event) {
            boolean writableRepoSelected = false;
            IStructuredSelection selection = (IStructuredSelection) viewer.getSelection();
            Object element = selection.getFirstElement();
            if (element instanceof RepositoryPlugin) {
                RepositoryPlugin repo = (RepositoryPlugin) element;
                writableRepoSelected = repo.canWrite();
            }
            addBundlesAction.setEnabled(writableRepoSelected);
        }
    });
    tree.addMouseListener(new MouseAdapter() {

        @Override
        public void mouseUp(MouseEvent ev) {
            Object element = ((IStructuredSelection) viewer.getSelection()).getFirstElement();
            if (element instanceof ContinueSearchElement) {
                try {
                    getViewSite().getPage().showView(Plugin.JPM_BROWSER_VIEW_ID, null, showJpmOnClick ? IWorkbenchPage.VIEW_ACTIVATE : IWorkbenchPage.VIEW_CREATE);
                } catch (PartInitException e) {
                    Plugin.getDefault().getLog().log(e.getStatus());
                }
            }
        }
    });
    viewer.addDoubleClickListener(new IDoubleClickListener() {

        @Override
        public void doubleClick(DoubleClickEvent event) {
            if (!event.getSelection().isEmpty()) {
                IStructuredSelection selection = (IStructuredSelection) event.getSelection();
                final Object element = selection.getFirstElement();
                if (element instanceof IAdaptable) {
                    final URI uri = (URI) ((IAdaptable) element).getAdapter(URI.class);
                    if (uri == null && element instanceof RepositoryEntry) {
                        boolean download = MessageDialog.openQuestion(getSite().getShell(), "Repositories", "This repository entry is unable to be opened because it has not been downloaded. Download and open it now?");
                        if (download) {
                            final RepositoryEntry entry = (RepositoryEntry) element;
                            Job downloadJob = new Job("Downloading repository entry " + entry.getBsn()) {

                                @Override
                                protected IStatus run(IProgressMonitor monitor) {
                                    final File repoFile = entry.getFile(true);
                                    if (repoFile != null && repoFile.exists()) {
                                        getSite().getShell().getDisplay().asyncExec(new Runnable() {

                                            @Override
                                            public void run() {
                                                openURI(repoFile.toURI());
                                            }
                                        });
                                    }
                                    return Status.OK_STATUS;
                                }
                            };
                            downloadJob.setUser(true);
                            downloadJob.schedule();
                        }
                    } else if (uri != null) {
                        openURI(uri);
                    }
                } else if (element instanceof ContinueSearchElement) {
                    ContinueSearchElement searchElement = (ContinueSearchElement) element;
                    try {
                        JpmPreferences jpmPrefs = new JpmPreferences();
                        if (jpmPrefs.getBrowserSelection() == JpmPreferences.PREF_BROWSER_EXTERNAL) {
                            URI browseUrl = searchElement.browse();
                            getViewSite().getWorkbenchWindow().getWorkbench().getBrowserSupport().getExternalBrowser().openURL(browseUrl.toURL());
                        } else
                            getViewSite().getPage().showView(Plugin.JPM_BROWSER_VIEW_ID, null, IWorkbenchPage.VIEW_VISIBLE);
                    } catch (PartInitException e) {
                        Plugin.getDefault().getLog().log(e.getStatus());
                    } catch (Exception e) {
                        Plugin.getDefault().getLog().log(new Status(IStatus.ERROR, Plugin.PLUGIN_ID, 0, "Failed to load repository browser view", e));
                    }
                } else if (element instanceof RepositoryPlugin) {
                    viewer.setExpandedState(element, !viewer.getExpandedState(element));
                }
            }
        }
    });
    createContextMenu();
    // LAYOUT
    GridLayout layout = new GridLayout(1, false);
    layout.horizontalSpacing = 0;
    layout.verticalSpacing = 0;
    layout.marginWidth = 0;
    layout.marginHeight = 0;
    mainPanel.setLayout(layout);
    tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    filterPanel.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
    // Toolbar
    createActions();
    fillToolBar(getViewSite().getActionBars().getToolBarManager());
    prefs.addPropertyChangeListener(workspaceOfflineListener);
    // synthenic call to "refresh" so that we can get the repositories to show up in the UI
    new WorkspaceJob("Load repositories") {

        @Override
        public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
            try {
                Central.refreshPlugins();
            } catch (Exception e) {
            // ignore errors there may be no workspace yet
            }
            return Status.OK_STATUS;
        }
    }.schedule();
    IActionBars actionBars = getViewSite().getActionBars();
    actionBars.setGlobalActionHandler(ActionFactory.REFRESH.getId(), refreshAction);
}

Example 3 with ViewerDropAdapter

use of org.eclipse.jface.viewers.ViewerDropAdapter in project bndtools by bndtools.

the class JarListWizardPage method createControl.

@Override
public void createControl(final Composite parent) {
    setTitle("Select JARs");
    final Composite composite = new Composite(parent, SWT.NONE);
    Label lblHint = new Label(composite, SWT.WRAP);
    lblHint.setText("Selected files (hint: drag files from an external application into this list):");
    final Table table = new Table(composite, SWT.FULL_SELECTION | SWT.MULTI | SWT.BORDER);
    viewer = new TableViewer(table);
    viewer.setContentProvider(new ArrayContentProvider());
    viewer.setLabelProvider(new ClassPathLabelProvider());
    btnAdd = new Button(composite, SWT.PUSH);
    btnAdd.setText("Add");
    btnAddExternal = new Button(composite, SWT.PUSH);
    btnAddExternal.setText("Add External");
    btnRemove = new Button(composite, SWT.PUSH);
    btnRemove.setText("Remove");
    viewer.setInput(paths);
    update();
    // Listeners
    ViewerDropAdapter dropAdapter = new ViewerDropAdapter(viewer) {

        @Override
        public void dragEnter(DropTargetEvent event) {
            super.dragEnter(event);
            event.detail = DND.DROP_COPY;
        }

        @Override
        public boolean validateDrop(Object target, int operation, TransferData transferType) {
            return true;
        }

        @Override
        public boolean performDrop(Object data) {
            if (data instanceof String[]) {
                String[] newPaths = (String[]) data;
                List<IPath> added = new ArrayList<IPath>(newPaths.length);
                for (String path : newPaths) {
                    added.add(new Path(path));
                }
                if (!added.isEmpty()) {
                    addToPaths(added);
                    viewer.add(added.toArray());
                    update();
                }
            }
            return true;
        }
    };
    dropAdapter.setFeedbackEnabled(false);
    dropAdapter.setSelectionFeedbackEnabled(false);
    viewer.addDropSupport(DND.DROP_COPY | DND.DROP_MOVE, new Transfer[] { FileTransfer.getInstance() }, dropAdapter);
    viewer.addSelectionChangedListener(new ISelectionChangedListener() {

        @Override
        public void selectionChanged(final SelectionChangedEvent event) {
            update();
        }
    });
    btnAdd.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            // IResource newFile = ResourcesPlugin.getWorkspace().getRoot();
            // if(newFile != null) {
            ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(getShell(), new WorkbenchLabelProvider(), new WorkbenchContentProvider());
            dialog.setValidator(new ISelectionStatusValidator() {

                @Override
                public IStatus validate(Object[] selection) {
                    if (selection.length > 0 && selection[0] instanceof IFile) {
                        //$NON-NLS-1$
                        return new Status(IStatus.OK, Plugin.PLUGIN_ID, IStatus.OK, "", null);
                    }
                    //$NON-NLS-1$
                    return new Status(IStatus.ERROR, Plugin.PLUGIN_ID, IStatus.ERROR, "", null);
                }
            });
            dialog.setAllowMultiple(true);
            dialog.setTitle("JAR File Selection");
            dialog.setMessage("Select one or more JAR files.");
            //$NON-NLS-1$
            dialog.addFilter(new FileExtensionFilter("jar"));
            dialog.setInput(ResourcesPlugin.getWorkspace());
            if (dialog.open() == Window.OK) {
                Object[] files = dialog.getResult();
                List<IPath> added = new ArrayList<IPath>(files.length);
                for (Object file : files) {
                    added.add(((IResource) file).getFullPath().makeRelative());
                }
                if (!added.isEmpty()) {
                    addToPaths(added);
                    viewer.add(added.toArray());
                }
            }
            // }
            update();
        }
    });
    btnAddExternal.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            FileDialog dialog = new FileDialog(getShell(), SWT.OPEN | SWT.MULTI);
            dialog.setFilterExtensions(new String[] { //$NON-NLS-1$
            "*.jar" });
            String res = dialog.open();
            if (res != null) {
                IPath filterPath = new Path(dialog.getFilterPath());
                String[] fileNames = dialog.getFileNames();
                List<IPath> added = new ArrayList<IPath>(fileNames.length);
                for (String fileName : fileNames) {
                    added.add(filterPath.append(fileName));
                }
                if (!added.isEmpty()) {
                    addToPaths(added);
                    viewer.add(added.toArray());
                }
            }
            update();
        }
    });
    btnRemove.addSelectionListener(new SelectionAdapter() {

        @SuppressWarnings("unchecked")
        @Override
        public void widgetSelected(SelectionEvent e) {
            removeFromPaths(((IStructuredSelection) viewer.getSelection()).toList());
            viewer.remove(((IStructuredSelection) viewer.getSelection()).toArray());
            update();
        }
    });
    // Layout
    composite.setLayout(new GridLayout(2, false));
    table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 3));
    btnAdd.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false));
    btnAddExternal.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false));
    btnRemove.setLayoutData(new GridData(SWT.FILL, SWT.TOP, false, false));
    lblHint.setLayoutData(new GridData(SWT.LEFT, SWT.TOP, false, false, 2, 1));
    setControl(composite);
}