Java tutorial
/* * Copyright 2013 Amazon Technologies, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://aws.amazon.com/apache2.0 * * This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES * OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and * limitations under the License. */ package com.amazonaws.eclipse.identitymanagement.group; import org.eclipse.core.databinding.AggregateValidationStatus; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.beans.PojoObservables; import org.eclipse.core.databinding.observable.ChangeEvent; import org.eclipse.core.databinding.observable.IChangeListener; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.databinding.swt.SWTObservables; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; 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.Label; import org.eclipse.swt.widgets.Link; import org.eclipse.swt.widgets.Text; import com.amazonaws.eclipse.core.ui.WebLinkListener; import com.amazonaws.eclipse.databinding.ChainValidator; import com.amazonaws.eclipse.databinding.NotEmptyValidator; import com.amazonaws.eclipse.identitymanagement.databinding.DataBindingUtils; public class CreateGroupSecondPage extends WizardPage { private Text policyDocText; private Text policyNameText; private Button grantPermissionButton; private final String ConceptUrl = "http://docs.aws.amazon.com/IAM/latest/UserGuide/AccessPolicyLanguage_KeyConcepts.html"; private final DataBindingContext bindingContext = new DataBindingContext(); private IObservableValue policyName; private IObservableValue policyDoc; private IObservableValue grantPermission; private final static String OK_MESSAGE = "You can customize permissions by editing the following policy document."; public CreateGroupSecondPage(CreateGroupWizard wizard) { super(OK_MESSAGE); setMessage(OK_MESSAGE); policyName = PojoObservables.observeValue(wizard.getDataModel(), "policyName"); policyDoc = PojoObservables.observeValue(wizard.getDataModel(), "policyDoc"); grantPermission = PojoObservables.observeValue(wizard.getDataModel(), "grantPermission"); } public void createControl(Composite parent) { Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(1, false); layout.marginLeft = 5; composite.setLayout(layout); GridDataFactory.fillDefaults().grab(true, true).applyTo(composite); grantPermissionButton = new Button(composite, SWT.CHECK); grantPermissionButton.setText("Grant permissions"); grantPermissionButton.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { if (grantPermissionButton.getSelection()) { policyNameText.setEnabled(true); policyDocText.setEnabled(true); } else { policyNameText.setEnabled(false); policyDocText.setEnabled(false); } } public void widgetDefaultSelected(SelectionEvent e) { } }); bindingContext.bindValue(SWTObservables.observeSelection(grantPermissionButton), grantPermission); new Label(composite, SWT.NONE).setText("Policy Name:"); policyNameText = new Text(composite, SWT.BORDER); policyNameText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); bindingContext.bindValue(SWTObservables.observeText(policyNameText, SWT.Modify), policyName); ChainValidator<String> policyNameValidationStatusProvider = new ChainValidator<String>(policyName, grantPermission, new NotEmptyValidator("Please enter policy name")); bindingContext.addValidationStatusProvider(policyNameValidationStatusProvider); DataBindingUtils.addStatusDecorator(policyNameText, policyNameValidationStatusProvider); new Label(composite, SWT.NONE).setText("Policy Documentation:"); policyDocText = new Text(composite, SWT.MULTI | SWT.V_SCROLL | SWT.BORDER | SWT.H_SCROLL); GridData gridData = new GridData(GridData.FILL_BOTH); gridData.minimumHeight = 250; policyDocText.setLayoutData(gridData); bindingContext.bindValue(SWTObservables.observeText(policyDocText, SWT.Modify), policyDoc); ChainValidator<String> policyDocValidationStatusProvider = new ChainValidator<String>(policyDoc, grantPermission, new NotEmptyValidator("Please enter valid policy doc")); bindingContext.addValidationStatusProvider(policyDocValidationStatusProvider); DataBindingUtils.addStatusDecorator(policyDocText, policyDocValidationStatusProvider); Link link = new Link(composite, SWT.NONE | SWT.WRAP); link.setText("For more information about the access policy language, " + "see <a href=\"" + ConceptUrl + "\">Key Concepts</a> in Using AWS Identity and Access Management."); link.addListener(SWT.Selection, new WebLinkListener()); gridData = new GridData(SWT.FILL, SWT.TOP, true, false); gridData.widthHint = 200; link.setLayoutData(gridData); setControl(composite); setPageComplete(false); // Finally provide aggregate status reporting for the entire wizard page final AggregateValidationStatus aggregateValidationStatus = new AggregateValidationStatus(bindingContext, AggregateValidationStatus.MAX_SEVERITY); aggregateValidationStatus.addChangeListener(new IChangeListener() { public void handleChange(ChangeEvent event) { Object value = aggregateValidationStatus.getValue(); if (value instanceof IStatus == false) return; IStatus status = (IStatus) value; if (status.isOK()) { setErrorMessage(null); setMessage(OK_MESSAGE, Status.OK); } else if (status.getSeverity() == Status.WARNING) { setErrorMessage(null); setMessage(status.getMessage(), Status.WARNING); } else if (status.getSeverity() == Status.ERROR) { setErrorMessage(status.getMessage()); } setPageComplete(status.isOK()); } }); policyNameText.setEnabled(false); policyDocText.setEnabled(false); setPageComplete(true); } }