Java tutorial
/******************************************************************************* * Copyright (c) 2015, 2016 Red Hat. * 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: * Red Hat - Initial Contribution *******************************************************************************/ package org.eclipse.linuxtools.internal.vagrant.ui.wizards; import java.nio.file.Paths; import java.util.Map; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.beans.BeanProperties; import org.eclipse.core.databinding.observable.list.IObservableList; import org.eclipse.core.databinding.observable.list.WritableList; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.databinding.validation.MultiValidator; import org.eclipse.core.databinding.validation.ValidationStatus; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.jface.databinding.swt.WidgetProperties; import org.eclipse.jface.databinding.wizard.WizardPageSupport; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.linuxtools.internal.vagrant.core.EnvironmentsManager; import org.eclipse.linuxtools.internal.vagrant.ui.SWTImagesFactory; import org.eclipse.linuxtools.vagrant.core.IVagrantBox; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.ScrolledComposite; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; public class CreateVMPage extends WizardPage { private final CreateVMPageModel model; private final DataBindingContext dbc; private CreateVMAdvancedComposite advanced; public CreateVMPage(IVagrantBox box) { super("createVMPage", //$NON-NLS-1$ WizardMessages.getString("CreateVM.label"), //$NON-NLS-1$ SWTImagesFactory.DESC_BANNER_REPOSITORY); setMessage(WizardMessages.getString("CreateVM.desc")); //$NON-NLS-1$ this.model = new CreateVMPageModel(); if (box != null) { this.model.setBoxRef(box.getName()); } this.dbc = new DataBindingContext(); } @Override public void dispose() { dbc.dispose(); super.dispose(); } public String getVMName() { return model.getVFileMode() ? null : this.model.getVMName(); } public String getBoxReference() { return model.getVFileMode() ? null : this.model.getBoxRef(); } public String getVMFile() { return model.getVFileMode() ? this.model.getVMFile() : null; } public Map<String, String> getEnvironment() { return model.getEnvironment(); } @Override public void createControl(Composite parent) { ScrolledComposite scrollTop = new ScrolledComposite(parent, SWT.H_SCROLL | SWT.V_SCROLL); scrollTop.setExpandVertical(true); scrollTop.setExpandHorizontal(true); final Composite container = new Composite(scrollTop, SWT.NONE); GridLayoutFactory.fillDefaults().numColumns(3).margins(6, 6).applyTo(container); // VM Name final Label vmNameLabel = new Label(container, SWT.NONE); vmNameLabel.setText(WizardMessages.getString("CreateVM.name.label")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).applyTo(vmNameLabel); final Text vmNameText = new Text(container, SWT.BORDER); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).span(2, 1).applyTo(vmNameText); vmNameText.setToolTipText(WizardMessages.getString("CreateVMPage.name.tooltip")); //$NON-NLS-1$ // VM Name binding final IObservableValue<String> vmmNameObservable = BeanProperties .value(CreateVMPageModel.class, CreateVMPageModel.VM_NAME).observe(model); dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(vmNameText), vmmNameObservable); // Box name final Label boxRefLabel = new Label(container, SWT.NONE); boxRefLabel.setText(WizardMessages.getString("CreateVMPage.boxRef.label")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).applyTo(boxRefLabel); final Text boxRefText = new Text(container, SWT.BORDER); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).applyTo(boxRefText); boxRefText.setToolTipText(WizardMessages.getString("CreateVMPage.boxRef.tooltip")); //$NON-NLS-1$ // Box Name binding final IObservableValue<String> boxRefObservable = BeanProperties .value(CreateVMPageModel.class, CreateVMPageModel.BOX_REF).observe(model); dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(boxRefText), boxRefObservable); // Box name search final Button boxSearchButton = new Button(container, SWT.NONE); boxSearchButton.setText(WizardMessages.getString("CreateVMPage.search.label")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).applyTo(boxSearchButton); boxSearchButton.addSelectionListener(onSearchImage()); // VM File Checkbox final Button customVMFileButton = new Button(container, SWT.CHECK); customVMFileButton.setText(WizardMessages.getString("CreateVMPage.File.CheckBox")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).span(3, 1) .applyTo(customVMFileButton); final IObservableValue<String> customVMFileObservable = BeanProperties .value(CreateVMPageModel.class, CreateVMPageModel.V_FILE_MODE).observe(model); dbc.bindValue(WidgetProperties.selection().observe(customVMFileButton), customVMFileObservable); // VM File final Label boxLocLabel = new Label(container, SWT.NONE); boxLocLabel.setText(WizardMessages.getString("CreateVMPage.loc.label")); //$NON-NLS-1$ GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).applyTo(boxLocLabel); final Text boxLocText = new Text(container, SWT.BORDER); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).applyTo(boxLocText); boxLocText.setToolTipText(WizardMessages.getString("CreateVMPage.loc.tooltip")); //$NON-NLS-1$ boxLocText.setEnabled(false); // Location binding final IObservableValue<String> boxLocObservable = BeanProperties .value(CreateVMPageModel.class, CreateVMPageModel.VM_FILE).observe(model); dbc.bindValue(WidgetProperties.text(SWT.Modify).observe(boxLocText), boxLocObservable); boxLocText.addModifyListener(e -> vmFileChanged(boxLocText.getText())); // Vagrantfile search final Button vgFilesearchButton = new Button(container, SWT.NONE); vgFilesearchButton.setText(WizardMessages.getString("CreateVMPage.search.label")); //$NON-NLS-1$ vgFilesearchButton.setEnabled(false); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).grab(false, false).applyTo(vgFilesearchButton); vgFilesearchButton.addSelectionListener(onSearchVMFile()); customVMFileButton.addSelectionListener( onCheckCustomVMFile(vmNameText, boxRefText, boxLocText, vgFilesearchButton, boxSearchButton)); dbc.addValidationStatusProvider( new CreateVMValidationStatusProvider(vmmNameObservable, boxRefObservable, boxLocObservable)); advanced = new CreateVMAdvancedComposite(container, scrollTop, model); GridDataFactory.fillDefaults().align(SWT.FILL, SWT.CENTER).span(3, 1).grab(true, false).applyTo(advanced); // setup validation support WizardPageSupport.create(this, dbc); scrollTop.setContent(container); Point point = container.computeSize(SWT.DEFAULT, SWT.DEFAULT); scrollTop.setSize(point); scrollTop.setMinSize(point); setControl(container); } private SelectionListener onCheckCustomVMFile(Text vmNameText, Text boxRefText, Text boxLocText, Button searchButton, Button boxSearchButton) { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { if (e.widget instanceof Button) { Button bt = (Button) e.widget; if (bt.getSelection()) { vmNameText.setEnabled(false); boxRefText.setEnabled(false); boxSearchButton.setEnabled(false); searchButton.setEnabled(true); boxLocText.setEnabled(true); model.setVFileMode(true); } else { vmNameText.setEnabled(true); boxRefText.setEnabled(true); boxSearchButton.setEnabled(true); searchButton.setEnabled(false); boxLocText.setEnabled(false); model.setVFileMode(false); } } } }; } private SelectionListener onSearchImage() { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { FileDialog fd = new FileDialog(getShell()); String location = fd.open(); if (location != null && !location.isEmpty()) { model.setBoxRef(location); } } }; } private SelectionListener onSearchVMFile() { return new SelectionAdapter() { @Override public void widgetSelected(final SelectionEvent e) { FileDialog fd = new FileDialog(getShell()); String location = fd.open(); if (location != null && !location.isEmpty()) { model.setVMFile(location); vmFileChanged(location); } } }; } private void vmFileChanged(String vagrantFile) { IPath folder = new Path(vagrantFile).removeLastSegments(1); Map<String, String> existingEnv = EnvironmentsManager.getSingleton().getEnvironment(folder.toFile()); if (existingEnv != null) { model.setEnvironment(existingEnv); advanced.refresh(); } } private class CreateVMValidationStatusProvider extends MultiValidator { private IObservableValue<String> vmNameOb, boxRefOb, boxLocOb; public CreateVMValidationStatusProvider(IObservableValue<String> vmNameOb, IObservableValue<String> boxRefOb, IObservableValue<String> boxLocOb) { this.vmNameOb = vmNameOb; this.boxRefOb = boxRefOb; this.boxLocOb = boxLocOb; } @Override public IObservableList<String> getTargets() { // Work around for NPE triggered by DialogPageSupport.dispose() return new WritableList<>(); } @Override protected IStatus validate() { String vmName = vmNameOb.getValue(); String boxRef = boxRefOb.getValue(); String boxLoc = boxLocOb.getValue(); if (!model.getVFileMode()) { if (vmName == null || vmName.isEmpty()) { return ValidationStatus.error(WizardMessages.getString("CreateVMPage.emptyVMName")); //$NON-NLS-1$ } else if (boxRef == null || boxRef.isEmpty()) { return ValidationStatus.error(WizardMessages.getString("CreateVMPage.emptyBoxRef")); //$NON-NLS-1$ } } else { if (boxLoc == null || boxLoc.isEmpty()) { return ValidationStatus.error(WizardMessages.getString("CreateVMPage.emptyVagrantfile")); //$NON-NLS-1$ } if (!Paths.get(boxLoc).toFile().canRead()) { return ValidationStatus.error(WizardMessages.getString("CreateVMPage.invalidVagrantfile")); //$NON-NLS-1$ } } return ValidationStatus.ok(); } } }