Java tutorial
/******************************************************************************* * Copyright (c) 2011, 2013 Ericsson * * 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: * Francois Chouinard - Initial API and implementation * Patrick Tasse - Updated for TMF 2.0 *******************************************************************************/ package org.eclipse.linuxtools.internal.gdbtrace.ui.views.project.dialogs; import java.io.File; import java.io.IOException; import java.util.Arrays; import org.eclipse.cdt.core.CCorePlugin; import org.eclipse.cdt.core.IBinaryParser; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Path; import org.eclipse.core.runtime.Status; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.linuxtools.internal.gdbtrace.ui.GdbTraceUIPlugin; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Font; 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.Control; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.dialogs.SelectionStatusDialog; /** * Dialog implementation for the Select Trace Executable command * * @author Francois Chouinard */ public class SelectTraceExecutableDialog extends SelectionStatusDialog { private final IStatus OK_STATUS = new Status(IStatus.OK, GdbTraceUIPlugin.PLUGIN_ID, ""); //$NON-NLS-1$ private final IStatus PATH_ERROR_STATUS = new Status(IStatus.ERROR, GdbTraceUIPlugin.PLUGIN_ID, Messages.SelectTraceExecutableDialog_Message); private final IStatus BINARY_ERROR_STATUS = new Status(IStatus.ERROR, GdbTraceUIPlugin.PLUGIN_ID, Messages.SelectTraceExecutableDialog_BinaryError); private Text fExecutableNameEntry; private IPath fExecutablePath; /** * Creates a SelectTraceExecutableDialog * * @param parentShell parent of the new dialog */ public SelectTraceExecutableDialog(Shell parentShell) { super(parentShell); setTitle(Messages.SelectTraceExecutableDialog_Title); setStatusLineAboveButtons(true); setHelpAvailable(false); } @Override protected void computeResult() { setResult(Arrays.asList(new IPath[] { fExecutablePath })); } @Override public void create() { super.create(); getButton(IDialogConstants.OK_ID).setEnabled(false); } @Override protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); composite.setLayout(new GridLayout()); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); createFolderNameGroup(composite); setStatusLineAboveButtons(true); updateStatus(PATH_ERROR_STATUS); return composite; } /** * Creates the folder name specification controls. * * @param parent the parent composite */ private void createFolderNameGroup(Composite parent) { final Shell shell = parent.getShell(); Font font = parent.getFont(); Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(3, false); composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); // Executable name label Label label = new Label(composite, SWT.NONE); label.setFont(font); label.setText(Messages.SelectTraceExecutableDialog_ExecutableName); // Executable name entry field fExecutableNameEntry = new Text(composite, SWT.BORDER); GridData data = new GridData(GridData.FILL_HORIZONTAL); data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH; fExecutableNameEntry.setLayoutData(data); fExecutableNameEntry.setFont(font); fExecutableNameEntry.addListener(SWT.Modify, new Listener() { @Override public void handleEvent(Event event) { fExecutablePath = Path.fromOSString(fExecutableNameEntry.getText()); if (!validateExecutableName()) { updateStatus(PATH_ERROR_STATUS); } else if (!validateExecutableBinary()) { updateStatus(BINARY_ERROR_STATUS); } else { updateStatus(OK_STATUS); } } }); // Browse button Button browseExecutableButton = new Button(composite, SWT.NONE); browseExecutableButton.setText(Messages.SelectTraceExecutableDialog_Browse); browseExecutableButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent event) { FileDialog dlg = new FileDialog(shell); String workspacePath = ResourcesPlugin.getWorkspace().getRoot().getLocation().toOSString(); dlg.setFilterPath(workspacePath); dlg.setText(Messages.SelectTraceExecutableDialog_ExecutablePrompt); String path = dlg.open(); if (path != null) { fExecutableNameEntry.setText(path); } } }); } /** * Checks whether the executable location is valid. */ private boolean validateExecutableName() { if (fExecutablePath != null) { File file = new File(fExecutablePath.toOSString()); return file.exists() && file.isFile(); } return false; } /** * Checks whether the executable location is a recognized executable. */ private boolean validateExecutableBinary() { try { IBinaryParser parser = CCorePlugin.getDefault().getDefaultBinaryParser(); IBinaryParser.IBinaryFile binary = parser.getBinary(fExecutablePath); if (binary instanceof IBinaryParser.IBinaryObject) { return true; } } catch (CoreException e) { } catch (IOException e) { } return false; } /** * Returns the selected executable path. * @return the executable path */ public IPath getExecutablePath() { return fExecutablePath; } }