Java tutorial
/** * Copyright (c) 2013-2016 Angelo ZERR. * 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: * Angelo Zerr <angelo.zerr@gmail.com> - initial API and implementation */ package tern.eclipse.ide.ui.controls; import java.util.ArrayList; import java.util.Collection; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.Platform; import org.eclipse.core.runtime.preferences.DefaultScope; import org.eclipse.core.runtime.preferences.IScopeContext; import org.eclipse.core.runtime.preferences.InstanceScope; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ICheckStateListener; 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.jface.viewers.TableViewerColumn; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Table; import tern.eclipse.ide.core.IIDETernRepository; import tern.eclipse.ide.core.TernCorePlugin; import tern.eclipse.ide.core.preferences.TernCorePreferenceConstants; import tern.eclipse.ide.internal.ui.TernUIMessages; import tern.eclipse.ide.internal.ui.dialogs.EditRepositoryDialog; import tern.eclipse.ide.ui.TernUIPlugin; import tern.eclipse.ide.ui.viewers.TernRepositoryLabelProvider; import tern.repository.ITernRepository; import tern.server.ITernModule; import tern.utils.TernModuleHelper; /** * Tern repository block. * */ public class TernRepositoryBlock extends AbstractTableBlock { private CheckboxTableViewer repositoryViewer; private final IProject project; private TernModulesBlock modulesBlock; public TernRepositoryBlock(IProject project) { this.project = project; } public Control createControl(Composite ancestor) { Composite parent = new Composite(ancestor, SWT.BORDER); GridLayout layout = new GridLayout(); layout.numColumns = 1; layout.marginHeight = 0; layout.marginWidth = 0; parent.setLayout(layout); Font font = ancestor.getFont(); parent.setFont(font); parent.setLayoutData(new GridData(GridData.FILL_BOTH)); createRepositoryTable(parent); createModulesTable(parent); Dialog.applyDialogFont(parent); return parent; } private void createRepositoryTable(Composite parent) { Table table = new Table(parent, SWT.CHECK | SWT.SINGLE | SWT.BORDER | SWT.FULL_SELECTION | SWT.V_SCROLL); GridData data = new GridData(GridData.FILL_BOTH); table.setLayoutData(data); table.setFont(parent.getFont()); table.setHeaderVisible(true); table.setLinesVisible(false); repositoryViewer = new CheckboxTableViewer(table); // create name column TableViewerColumn nameColumn = new TableViewerColumn(repositoryViewer, SWT.NONE); nameColumn.getColumn().setWidth(100); nameColumn.getColumn().setResizable(true); nameColumn.getColumn().setText(TernUIMessages.TernRepositoryBlock_repositoryName); // create name column TableViewerColumn filenameColumn = new TableViewerColumn(repositoryViewer, SWT.NONE); filenameColumn.getColumn().setWidth(300); filenameColumn.getColumn().setResizable(true); filenameColumn.getColumn().setText(TernUIMessages.TernRepositoryBlock_filenameColumn); repositoryViewer.setLabelProvider(TernRepositoryLabelProvider.getInstance()); repositoryViewer.setContentProvider(ArrayContentProvider.getInstance()); addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(SelectionChangedEvent event) { refreshModules(); } }); repositoryViewer.addCheckStateListener(new ICheckStateListener() { @Override public void checkStateChanged(CheckStateChangedEvent event) { IIDETernRepository repository = (IIDETernRepository) event.getElement(); // check and select only one tern repository. checkAndSelect(repository); } }); restoreColumnSettings(); } public void addSelectionChangedListener(ISelectionChangedListener listener) { repositoryViewer.addSelectionChangedListener(listener); } private void createModulesTable(Composite parent) { GridLayout layout = new GridLayout(); layout.numColumns = 1; layout.marginHeight = 0; layout.marginWidth = 0; parent.setLayout(layout); // create UI modules modulesBlock = new TernModulesBlock(project, TernUIMessages.TernRepositoryBlock_modules_desc); Control control = modulesBlock.createControl(parent); GridData data = new GridData(GridData.FILL_BOTH); data.horizontalSpan = 1; control.setLayoutData(data); } private void refreshModules() { IStructuredSelection selection = (IStructuredSelection) repositoryViewer.getSelection(); if (!selection.isEmpty()) { ITernRepository repository = (ITernRepository) selection.getFirstElement(); refreshModules(repository); } } private void refreshModules(ITernRepository repository) { IScopeContext[] lookupOrder = new IScopeContext[] { InstanceScope.INSTANCE, DefaultScope.INSTANCE }; String moduleNames = Platform.getPreferencesService().getString( TernCorePlugin.getDefault().getBundle().getSymbolicName(), TernCorePreferenceConstants.DEFAULT_TERN_MODULES, TernCorePreferenceConstants.DEFAULT_TERN_MODULES_VALUE, lookupOrder); modulesBlock.loadModules(repository, moduleNames.split(",")); } public void setCheckedModules(String[] selectedModules) { modulesBlock.loadModules(getCurrentRepository(), selectedModules); } @Override protected Table getTable() { return repositoryViewer.getTable(); } @Override protected IDialogSettings getDialogSettings() { return TernUIPlugin.getDefault().getDialogSettings(); } @Override protected String getQualifier() { return TernUIPlugin.PLUGIN_ID + ".repository."; } public void loadRepositories() { IIDETernRepository checkedRepository = null; IIDETernRepository currentRepository = TernCorePlugin.getTernRepositoryManager().getRepository(project); // clone the list of tern repository. Collection<IIDETernRepository> repositories = new ArrayList<IIDETernRepository>(); IIDETernRepository clonedRepository = null; for (IIDETernRepository repository : TernCorePlugin.getTernRepositoryManager().getRepositories()) { clonedRepository = repository.isDefault() ? repository : repository.copy(); if (repository.equals(currentRepository)) { checkedRepository = clonedRepository; } repositories.add(clonedRepository); } // refresh the viewer repositoryViewer.setInput(repositories); // check the default tern repository if (checkedRepository != null) { setCheckedRepository(checkedRepository); } } /** * Check and select the given tern repository. * * @param repository * the tern repository to check. */ public void setCheckedRepository(IIDETernRepository repository) { if (repository != null) { checkAndSelect(repository); } } /** * Returns the checked tern repository. * * @return the checked tern repository. */ public ITernRepository getCheckedRepository() { Object[] elements = repositoryViewer.getCheckedElements(); return (ITernRepository) elements[0]; } /** * Create and add a new tern repository. * * @param parentShell */ public void addRepository(Shell parentShell) { EditRepositoryDialog dialog = new EditRepositoryDialog(parentShell, getRepositories()); if (dialog.open() == Window.OK) { IIDETernRepository newTernRepository = dialog.getRepository(); if (newTernRepository != null) { getRepositories().add(newTernRepository); refresh(); } } } /** * Remove the current repository. * * @param parentShell */ public void removeRepository(Shell parentShell) { if (MessageDialog.openConfirm(parentShell, TernUIMessages.TernRepositoryBlock_removeRepository_title, TernUIMessages.TernRepositoryBlock_removeRepository_message)) { ITernRepository repository = getCurrentRepository(); if (repository != null) { getRepositories().remove(repository); refresh(); } } } /** * Refresh the current repository. * */ public void refreshRepository() { ITernRepository repository = getCurrentRepository(); if (repository != null) { repository.refresh(); refreshModules(); } } /** * Edit the current repository. * * @param parentShell */ public void editRepository(Shell parentShell) { IIDETernRepository repository = getCurrentRepository(); if (repository != null && !repository.isDefault()) { EditRepositoryDialog dialog = new EditRepositoryDialog(parentShell, getRepositories(), repository); if (dialog.open() == Window.OK) { repositoryViewer.refresh(repository); repository.refresh(); refreshModules(); } } } /** * Returns the cloned tern repository. * * @return */ private Collection<IIDETernRepository> getRepositories() { return (Collection<IIDETernRepository>) repositoryViewer.getInput(); } /** * Refresh tern repository and linked modules. */ private void refresh() { repositoryViewer.refresh(); refreshModules(); } /** * Save repositories. */ public void saveRepositories() { // save repositories TernCorePlugin.getTernRepositoryManager().setRepositories(getRepositories()); saveDefaultModules(); } public void saveDefaultModules() { // save default modules new InstanceScope().getNode(TernCorePlugin.getDefault().getBundle().getSymbolicName()) .put(TernCorePreferenceConstants.DEFAULT_TERN_MODULES, getDefaultModules()); } private String getDefaultModules() { ITernModule[] modules = modulesBlock.getCheckedModules().toArray(ITernModule.EMPTY_MODULE); return TernModuleHelper.getModulesAsString(modules); } /** * Returns the current repository. * * @return the current repository. */ private IIDETernRepository getCurrentRepository() { IStructuredSelection selection = (IStructuredSelection) repositoryViewer.getSelection(); if (selection.isEmpty()) { return null; } return (IIDETernRepository) selection.getFirstElement(); } /** * Check and select the single given tern repository. * * @param repository * the repository to select and check. */ private void checkAndSelect(IIDETernRepository repository) { repositoryViewer.setCheckedElements(new Object[] { repository }); repositoryViewer.setSelection(new StructuredSelection(repository)); } }