Java tutorial
/* * Copyright (C) 2012 RoboVM AB * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/gpl-2.0.html>. */ package org.robovm.eclipse.internal; import java.util.ArrayList; import java.util.List; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IWorkspaceRoot; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.ui.AbstractLaunchConfigurationTab; import org.eclipse.jdt.core.IJavaModel; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; import org.eclipse.jdt.ui.JavaElementLabelProvider; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.ElementListSelectionDialog; import org.robovm.eclipse.RoboVMPlugin; public class RoboVMTab extends AbstractLaunchConfigurationTab { private Text projectText; private Button projectButton; private WidgetListener projectListener = new WidgetListener(); private class WidgetListener implements ModifyListener, SelectionListener { @Override public void modifyText(ModifyEvent e) { checkParameters(); setDirty(true); } @Override public void widgetDefaultSelected(SelectionEvent e) { } @Override public void widgetSelected(SelectionEvent e) { Object source = e.getSource(); if (source == projectButton) { handleProjectButtonSelected(); } else { checkParameters(); } } } @Override public void createControl(Composite parent) { Composite root = createRoot(parent); createProjectEditor(root); setControl(root); } public Composite createRoot(Composite parent) { Composite root = new Composite(parent, SWT.NONE); root.setFont(parent.getFont()); root.setLayout(new GridLayout(1, false)); root.setLayoutData(new GridData(GridData.FILL_BOTH)); ((GridData) root.getLayoutData()).horizontalSpan = 1; ((GridLayout) root.getLayout()).verticalSpacing = 0; return root; } private void handleProjectButtonSelected() { IJavaProject project = chooseJavaProject(); if (project == null) { return; } projectText.setText(project.getElementName()); } protected void createProjectEditor(Composite parent) { Group group = new Group(parent, SWT.NONE); group.setText("Project:"); group.setFont(parent.getFont()); group.setLayout(new GridLayout(2, false)); group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); ((GridData) group.getLayoutData()).horizontalSpan = 1; ((GridLayout) group.getLayout()).verticalSpacing = 0; projectText = new Text(group, SWT.SINGLE | SWT.BORDER); projectText.setFont(parent.getFont()); projectText.setText(""); projectText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); projectText.addModifyListener(projectListener); projectButton = new Button(group, SWT.NONE); projectButton.setFont(parent.getFont()); projectButton.setText("Browse..."); projectButton.setLayoutData(new GridData()); projectButton.addSelectionListener(projectListener); } @Override public String getName() { return "RoboVM"; } @Override public void initializeFrom(ILaunchConfiguration config) { if (projectText != null) { String projectName = ""; try { projectName = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, ""); } catch (CoreException e) { RoboVMPlugin.log(e); } projectText.setText(projectName); } } @Override public void performApply(ILaunchConfigurationWorkingCopy wc) { if (projectText != null) { wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, projectText.getText()); } } @Override public void setDefaults(ILaunchConfigurationWorkingCopy wc) { wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, ""); } private IJavaProject chooseJavaProject() { ILabelProvider labelProvider = new JavaElementLabelProvider(JavaElementLabelProvider.SHOW_DEFAULT); ElementListSelectionDialog dialog = new ElementListSelectionDialog(getShell(), labelProvider); dialog.setTitle("Project Secletion"); dialog.setMessage("Select a RoboVM project to launch"); try { IJavaProject[] projects = getRoboVMProjects(); dialog.setElements(projects); IJavaProject selectedProject = findProject(projects, projectText.getText()); if (selectedProject != null) { dialog.setInitialSelections(new Object[] { selectedProject }); } if (dialog.open() == Window.OK) { return (IJavaProject) dialog.getFirstResult(); } } catch (CoreException e) { RoboVMPlugin.log(e); } return null; } private IJavaProject[] getRoboVMProjects() throws CoreException { IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot(); IJavaModel javaModel = JavaCore.create(workspaceRoot); List<IJavaProject> projects = new ArrayList<IJavaProject>(); for (IJavaProject project : javaModel.getJavaProjects()) { if (project.getProject().hasNature(RoboVMNature.ID)) { projects.add(project); } } return projects.toArray(new IJavaProject[projects.size()]); } private IJavaProject findProject(IJavaProject[] projects, String name) throws CoreException { for (IJavaProject javaProject : getRoboVMProjects()) { if (javaProject.getProject().getName().equals(name)) { return javaProject; } } return null; } protected void projectUpdated(IProject project) { } @Override public boolean isValid(ILaunchConfiguration launchConfig) { return getErrorMessage() == null; } private IProject checkParameters() { IProject found = null; try { //test the project name first! String text = projectText.getText(); if (text.length() == 0) { setErrorMessage("Project Name is required!"); } else if (text.matches("[a-zA-Z0-9_ \\.-]+") == false) { setErrorMessage("Project name contains unsupported characters!"); } else { try { IJavaProject javaProject = findProject(getRoboVMProjects(), text); if (javaProject != null) { found = javaProject.getProject(); } } catch (CoreException e) { RoboVMPlugin.log(e); } if (found != null) { setErrorMessage(null); } else { setErrorMessage(String.format("There is no RoboVM project named '%1$s'", text)); } } projectUpdated(found); } finally { updateLaunchConfigurationDialog(); } return found; } }