Java tutorial
/** * This file is protected by Copyright. * Please refer to the COPYRIGHT file distributed with this source distribution. * * This file is part of REDHAWK IDE. * * 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 gov.redhawk.sca.internal.ui.wizards; import gov.redhawk.model.sca.ScaDomainManager; import gov.redhawk.sca.ui.ScaUiPlugin; import gov.redhawk.sca.ui.parts.FormFilteredTree; import gov.redhawk.sca.ui.wizards.InstallApplicationContentProvider; import gov.redhawk.sca.ui.wizards.WizardSadItemProviderAdapterFactory; import java.text.SimpleDateFormat; import java.util.Comparator; import java.util.Date; import mil.jpeojtrs.sca.sad.SoftwareAssembly; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.jobs.IJobChangeEvent; import org.eclipse.core.runtime.jobs.JobChangeAdapter; import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.jface.viewers.ViewerComparator; 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.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.Text; import org.eclipse.ui.dialogs.PatternFilter; public class WaveformSelectionWizardPage extends WizardPage { private static final String WAVEFORM_ID = "WAVEFORM_ID"; private static final String AUTO_START = "AUTO_START"; /** * @deprecated Use {@link #getName()} instead */ @Deprecated private static final String SECTION = "gov.redhawk.sca.internal.ui.wizards.WaveformSelectionWizardPage"; private String waveformName; private boolean autoStart; private FormFilteredTree waveformSelectionList; private ScaDomainManager domMgr; private boolean defaultNameChanged; private Button startWaveform; private SoftwareAssembly sad; private InstallApplicationContentProvider contentProvider; private IDialogSettings waveformSelectionPageSettings; private String sadSelection; public WaveformSelectionWizardPage(final String pageName) { super(pageName); setTitle("Select a Waveform"); setDescription("Select a Waveform to launch"); } public void init(final ScaDomainManager domMgr) { this.domMgr = domMgr; if (this.waveformSelectionList != null) { this.waveformSelectionList.getViewer().setInput(this.domMgr); } } @Override public void createControl(final Composite parent) { setupDialogSettings(); GridData gd; // create the top level composite for the dialog area final Composite composite = new Composite(parent, SWT.NONE); setControl(composite); final GridLayout layout = new GridLayout(); layout.numColumns = 2; layout.makeColumnsEqualWidth = false; layout.marginHeight = 0; layout.marginWidth = 0; layout.verticalSpacing = 5; // SUPPRESS CHECKSTYLE MagicNumber layout.horizontalSpacing = 5; // SUPPRESS CHECKSTYLE MagicNumber composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setFont(parent.getFont()); // Build the separator line final Label titleBarSeparator = new Label(composite, SWT.HORIZONTAL | SWT.SEPARATOR); gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalSpan = 2; titleBarSeparator.setLayoutData(gd); this.waveformSelectionList = new FormFilteredTree(composite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER, new PatternFilter()); gd = new GridData(SWT.FILL, SWT.FILL, true, true); gd.horizontalSpan = 2; this.waveformSelectionList.setLayoutData(gd); this.contentProvider = new InstallApplicationContentProvider(); this.contentProvider.addContentCompletionListener(new JobChangeAdapter() { @Override public void done(final IJobChangeEvent event) { String waveformId = WaveformSelectionWizardPage.this.sadSelection; if (waveformId == null) { waveformId = WaveformSelectionWizardPage.this.waveformSelectionPageSettings .get(WaveformSelectionWizardPage.WAVEFORM_ID); } final String id = waveformId; if (!getControl().isDisposed()) { getControl().getDisplay().asyncExec(new Runnable() { @Override public void run() { final IStatus loadStatus = WaveformSelectionWizardPage.this.contentProvider .getLoadStatus(); if (loadStatus != null && !loadStatus.isOK()) { int severity = 0; if (loadStatus.getSeverity() == IStatus.WARNING) { severity = IMessageProvider.WARNING; } else if (loadStatus.getSeverity() == IStatus.ERROR) { severity = IMessageProvider.ERROR; } ScaUiPlugin.getDefault().getLog().log(loadStatus); setMessage("Problems occurred while scanning for waveforms.\nSee log for details.", severity); } restorePreviousWaveformSelection(id); } }); } } }); this.waveformSelectionList.getViewer().setContentProvider(this.contentProvider); this.waveformSelectionList.getViewer() .setLabelProvider(new AdapterFactoryLabelProvider(new WizardSadItemProviderAdapterFactory())); this.waveformSelectionList.getViewer().addDoubleClickListener(new IDoubleClickListener() { @Override public void doubleClick(final DoubleClickEvent event) { if (getWizard().canFinish()) { if (getWizard().performFinish()) { getWizard().getContainer().getShell().dispose(); } } } }); this.waveformSelectionList.getViewer().setComparator(new ViewerComparator() { private Comparator<String> viewerComparator; @Override protected Comparator<String> getComparator() { if (this.viewerComparator == null) { this.viewerComparator = new Comparator<String>() { @Override public int compare(final String s1, final String s2) { return s1.compareToIgnoreCase(s2); } }; } return this.viewerComparator; } }); this.waveformSelectionList.getViewer().setInput(this.domMgr); final Label label = new Label(composite, SWT.NONE); label.setText("Waveform Name:"); gd = new GridData(SWT.LEFT, SWT.CENTER, false, false); label.setLayoutData(gd); final Text waveformNameTextBox = new Text(composite, SWT.BORDER); gd = new GridData(SWT.FILL, SWT.CENTER, true, false); waveformNameTextBox.setLayoutData(gd); waveformNameTextBox.addModifyListener(new ModifyListener() { @Override public void modifyText(final ModifyEvent e) { WaveformSelectionWizardPage.this.defaultNameChanged = true; WaveformSelectionWizardPage.this.waveformName = waveformNameTextBox.getText(); updateFinished(); } }); this.startWaveform = new Button(composite, SWT.CHECK); this.startWaveform.setText("Start the Waveform after launching"); this.startWaveform.setLayoutData(GridDataFactory.fillDefaults().span(2, 1).grab(false, false).create()); restoreShouldAutoStartWaveform(); this.startWaveform.addSelectionListener(new SelectionListener() { @Override public void widgetSelected(final SelectionEvent e) { WaveformSelectionWizardPage.this.autoStart = WaveformSelectionWizardPage.this.startWaveform .getSelection(); } @Override public void widgetDefaultSelected(final SelectionEvent e) { // PASS } }); this.waveformSelectionList.getViewer().addSelectionChangedListener(new ISelectionChangedListener() { @Override public void selectionChanged(final SelectionChangedEvent event) { final Object selected = ((StructuredSelection) event.getSelection()).getFirstElement(); if (selected instanceof SoftwareAssembly) { if (WaveformSelectionWizardPage.this.sad == selected) { return; } WaveformSelectionWizardPage.this.sad = (SoftwareAssembly) selected; if (WaveformSelectionWizardPage.this.getWizard() instanceof BasicLaunchWaveformWizard) { ((BasicLaunchWaveformWizard) WaveformSelectionWizardPage.this.getWizard()) .reinitalizePages(); } if (WaveformSelectionWizardPage.this.defaultNameChanged) { // PASS since user had explicitly set the Waveform name } else if (WaveformSelectionWizardPage.this.sad == null) { waveformNameTextBox.setText(""); WaveformSelectionWizardPage.this.defaultNameChanged = false; } else { final SimpleDateFormat dateFormat = new SimpleDateFormat("DDD_HHmmssSSS"); final String initialValue = WaveformSelectionWizardPage.this.sad.getName() + "_" + dateFormat.format(new Date()); waveformNameTextBox.setText(initialValue); WaveformSelectionWizardPage.this.defaultNameChanged = false; } } updateFinished(); } }); this.setPageComplete(false); } private void setupDialogSettings() { this.waveformSelectionPageSettings = getDialogSettings().getSection(getName()); if (this.waveformSelectionPageSettings == null) { this.waveformSelectionPageSettings = getDialogSettings() .getSection(WaveformSelectionWizardPage.SECTION); if (this.waveformSelectionPageSettings == null) { this.waveformSelectionPageSettings = getDialogSettings().addNewSection(getName()); } } } private void restorePreviousWaveformSelection(final String waveformId) { final TreeViewer viewer = WaveformSelectionWizardPage.this.waveformSelectionList.getViewer(); if (viewer.getControl().isDisposed()) { return; } viewer.refresh(); // Ignore if there is already a selection if (!viewer.getSelection().isEmpty()) { return; } SoftwareAssembly selection = null; if (this.contentProvider.getChildren() != null) { for (final SoftwareAssembly s : this.contentProvider.getChildren()) { if (s.getId().equals(waveformId)) { selection = s; } } } if (selection == null && !this.contentProvider.getChildren().isEmpty()) { selection = this.contentProvider.getChildren().get(0); } if (selection != null) { viewer.setSelection(new StructuredSelection(selection)); } } private void restoreShouldAutoStartWaveform() { this.autoStart = this.waveformSelectionPageSettings.getBoolean(WaveformSelectionWizardPage.AUTO_START); this.startWaveform.setSelection(this.autoStart); } private void updateFinished() { this.setPageComplete( this.sad != null && this.waveformName != null && this.waveformName.trim().length() > 0); } @Override public void dispose() { // Explicitly call the dispose method on the extensions tree if (this.waveformSelectionList != null) { this.waveformSelectionList.dispose(); } super.dispose(); } public SoftwareAssembly getSoftwareAssembly() { return this.sad; } public String getWaveformName() { return this.waveformName; } public boolean isAutoStart() { return this.autoStart; } public void saveWidgetValues() { this.waveformSelectionPageSettings.put(WaveformSelectionWizardPage.AUTO_START, this.autoStart); this.waveformSelectionPageSettings.put(WaveformSelectionWizardPage.WAVEFORM_ID, this.sad.getId()); } public void setSoftwareAssemblySelection(final String sadId) { this.sadSelection = sadId; } }