Java tutorial
/******************************************************************************* * Copyright (c)2014 Prometheus Consulting * * 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 *******************************************************************************/ package nz.co.senanque.madura.wizards; import nz.co.senanque.madura.Utils; import org.eclipse.core.resources.IContainer; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IFolder; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.Path; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jface.dialogs.IDialogPage; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.ContainerSelectionDialog; /** * The "New" wizard page allows setting the container for the new file as well * as the file name. The page will only accept file name without the extension * OR with the extension that matches the expected one (rul). * @author Roger Parkinson */ public class RuleNewWizardPage extends WizardPage { private Text containerText; private Text fileText; private Text xsdFileText; private ISelection selection; private IResource resource; /** * Constructor for SampleNewWizardPage. * * @param pageName */ public RuleNewWizardPage(ISelection selection) { super("wizardPage"); setTitle("Rule Editor File"); setDescription( "This wizard creates a new file with *.rul extension that can be opened by the rule editor."); this.selection = selection; } /** * @see IDialogPage#createControl(Composite) */ public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NULL); GridLayout layout = new GridLayout(); container.setLayout(layout); layout.numColumns = 3; layout.verticalSpacing = 9; Label label = new Label(container, SWT.NULL); label.setText("&Container:"); containerText = new Text(container, SWT.BORDER | SWT.SINGLE); GridData gd = new GridData(GridData.FILL_HORIZONTAL); containerText.setLayoutData(gd); containerText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); Button button = new Button(container, SWT.PUSH); button.setText("Browse..."); WizardPage me = this; button.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { handleBrowse(); } }); label = new Label(container, SWT.NULL); label.setText("&File name:"); fileText = new Text(container, SWT.BORDER | SWT.SINGLE); gd = new GridData(GridData.FILL_HORIZONTAL); fileText.setLayoutData(gd); fileText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); label = new Label(container, SWT.NULL); label.setText("");//dummy label to hack layout label = new Label(container, SWT.NULL); label.setText("&XSD File name:"); xsdFileText = new Text(container, SWT.BORDER | SWT.SINGLE); gd = new GridData(GridData.FILL_HORIZONTAL); xsdFileText.setLayoutData(gd); xsdFileText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { dialogChanged(); } }); Button xsdbutton = new Button(container, SWT.PUSH); xsdbutton.setText("Browse..."); xsdbutton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { Utils.handleBrowse(xsdFileText, resource, me.getShell()); } }); initialize(); dialogChanged(); setControl(container); } /** * Tests if the current workbench selection is a suitable container to use. */ private void initialize() { if (selection != null && selection.isEmpty() == false && selection instanceof IStructuredSelection) { IStructuredSelection ssel = (IStructuredSelection) selection; if (ssel.size() > 1) return; Object obj = ssel.getFirstElement(); if (obj instanceof IJavaElement) { IJavaElement ijp = (IJavaElement) obj; containerText.setText(ijp.getPath().toPortableString()); resource = ijp.getJavaProject().getProject(); } if (obj instanceof IFolder) { IFolder ijp = (IFolder) obj; containerText.setText(ijp.getFullPath().toPortableString()); resource = ijp; } if (obj instanceof IFile) { IFile ijp = (IFile) obj; IContainer container = ijp.getParent(); if (container instanceof IFolder) { IFolder f = (IFolder) container; containerText.setText(f.getFullPath().toPortableString()); resource = f; } else if (container instanceof IProject) { IProject p = (IProject) container; containerText.setText(p.getFullPath().toPortableString()); resource = p; } } } fileText.setText("new_file.rul"); } /** * Uses the standard container selection dialog to choose the new value for * the container field. */ private void handleBrowse() { ContainerSelectionDialog dialog = new ContainerSelectionDialog(getShell(), ResourcesPlugin.getWorkspace().getRoot(), false, "Select new file container"); if (dialog.open() == ContainerSelectionDialog.OK) { Object[] result = dialog.getResult(); if (result.length == 1) { containerText.setText(((Path) result[0]).toString()); } } } /** * Ensures that both text fields are set. */ private void dialogChanged() { IResource container = ResourcesPlugin.getWorkspace().getRoot().findMember(new Path(getContainerName())); String fileName = getFileName(); String xsdFileName = getXSDFileName(); if (getContainerName().length() == 0) { updateStatus("File container must be specified"); return; } if (container == null || (container.getType() & (IResource.PROJECT | IResource.FOLDER)) == 0) { updateStatus("File container must exist"); return; } if (!container.isAccessible()) { updateStatus("Project must be writable"); return; } if (fileName.length() == 0) { updateStatus("File name must be specified"); return; } if (fileName.replace('\\', '/').indexOf('/', 1) > 0) { updateStatus("File name must be valid"); return; } int dotLoc = fileName.lastIndexOf('.'); if (dotLoc != -1) { String ext = fileName.substring(dotLoc + 1); if (ext.equalsIgnoreCase("rul") == false) { updateStatus("File extension must be \"rul\""); return; } } if (xsdFileName.length() == 0) { updateStatus("XSD File name must be specified"); return; } if (xsdFileName.replace('\\', '/').indexOf('/', 1) > 0) { updateStatus("XSD File name must be valid"); return; } dotLoc = xsdFileName.lastIndexOf('.'); if (dotLoc != -1) { String ext = xsdFileName.substring(dotLoc + 1); if (ext.equalsIgnoreCase("xsd") == false) { updateStatus("XSD File extension must be \"xsd\""); return; } } updateStatus(null); } private void updateStatus(String message) { setErrorMessage(message); setPageComplete(message == null); } public String getContainerName() { return containerText.getText(); } public String getFileName() { return fileText.getText(); } public String getXSDFileName() { return xsdFileText.getText(); } }