org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/internal/lttng/ui/project/dialogs/TraceLibraryPathWizardPage.java

   1 /*******************************************************************************
   2  * Copyright (c) 2011 MontaVista Software
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Yufen Kuo (ykuo@mvista.com) - Initial API and implementation
  11  *******************************************************************************/
  12 package org.eclipse.linuxtools.internal.lttng.ui.project.dialogs;
  13
  14 import java.io.File;
  15
  16 import org.eclipse.jface.wizard.WizardPage;
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.events.ModifyEvent;
  19 import org.eclipse.swt.events.ModifyListener;
  20 import org.eclipse.swt.events.SelectionAdapter;
  21 import org.eclipse.swt.events.SelectionEvent;
  22 import org.eclipse.swt.graphics.Font;
  23 import org.eclipse.swt.layout.GridData;
  24 import org.eclipse.swt.layout.GridLayout;
  25 import org.eclipse.swt.widgets.Button;
  26 import org.eclipse.swt.widgets.Composite;
  27 import org.eclipse.swt.widgets.DirectoryDialog;
  28 import org.eclipse.swt.widgets.Display;
  29 import org.eclipse.swt.widgets.Label;
  30 import org.eclipse.swt.widgets.Text;
  31
  32 public class TraceLibraryPathWizardPage extends WizardPage {
  33     private static final String LTTVTRACEREAD_LOADER_LIBNAME = "lttvtraceread_loader"; //$NON-NLS-1$
  34     private Button browsePathButton;
  35     private Text traceLibraryPath;
  36
  37     protected TraceLibraryPathWizardPage(String pageName) {
  38         super(pageName);
  39     }
  40
  41     @Override
  42     public void createControl(Composite parent) {
  43         Composite client = new Composite(parent, SWT.NONE);
  44         client.setLayoutData(new GridData(GridData.FILL_BOTH));
  45
  46         GridLayout layout = new GridLayout(3, false);
  47         layout.marginHeight = 0;
  48         layout.marginWidth = 0;
  49         client.setLayout(layout);
  50
  51         Label label = new Label(client, SWT.NONE);
  52         label.setText(Messages.TraceLibraryPath_label);
  53         traceLibraryPath = new Text(client, SWT.BORDER);
  54         traceLibraryPath.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
  55         traceLibraryPath.addModifyListener(new ModifyListener() {
  56
  57             @Override
  58             public void modifyText(ModifyEvent e) {
  59                 boolean valid = validatePage();
  60                 setPageComplete(valid);
  61             }
  62
  63         });
  64         browsePathButton = new Button(client, SWT.PUSH);
  65         browsePathButton.setLayoutData(new GridData(SWT.END, SWT.CENTER, false, false));
  66         browsePathButton.setText(Messages.TraceLibraryPath_browseBtn);
  67         browsePathButton.addSelectionListener(new SelectionAdapter() {
  68
  69             @Override
  70             public void widgetSelected(SelectionEvent e) {
  71                 String dir = new DirectoryDialog(Display.getDefault()
  72                         .getActiveShell()).open();
  73                 if (dir != null) {
  74                     traceLibraryPath.setText(dir);
  75                 }
  76
  77             }
  78
  79         });
  80
  81         Label noLabel = new Label(client, SWT.NONE);
  82         noLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.TOP, false, false));
  83
  84         Label descTextLabel = new Label(client, SWT.WRAP);
  85         descTextLabel.setText(Messages.TraceLibraryPathWizard_Message);
  86         GridData gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
  87         gd.widthHint = 400;
  88         gd.horizontalSpan = 2;
  89         descTextLabel.setLayoutData(gd);
  90
  91         Label noteBoldLabel = new Label(client, SWT.BOLD);
  92         noteBoldLabel.setText(Messages.TraceLibraryPath_Note);
  93         noteBoldLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.TOP, false, false));
  94         Font font = noteBoldLabel.getFont();
  95         if (font.getFontData().length > 0)
  96             noteBoldLabel.setFont(new Font(client.getDisplay(), font
  97                     .getFontData()[0].getName(), font.getFontData()[0]
  98                     .getHeight(), SWT.BOLD));
  99
 100         Label noteTextLabel = new Label(client, SWT.WRAP);
 101         noteTextLabel.setText(Messages.TraceLibraryPath_Message);
 102         gd = new GridData(SWT.FILL, SWT.CENTER, true, false);
 103         gd.widthHint = 400;
 104         gd.horizontalSpan = 2;
 105         noteTextLabel.setLayoutData(gd);
 106         setControl(client);
 107
 108     }
 109
 110     public String getPath() {
 111         if (traceLibraryPath != null && !traceLibraryPath.isDisposed()) {
 112             String path = traceLibraryPath.getText();
 113             if (path != null && !path.trim().isEmpty())
 114                 return path;
 115         }
 116         return null;
 117     }
 118
 119     private boolean validatePage() {
 120         String path = getPath();
 121         if (path != null) {
 122             File file = new File(path);
 123             if (file.exists() && file.isDirectory()) {
 124                 File loaderLib = new File(path,
 125                         System.mapLibraryName(LTTVTRACEREAD_LOADER_LIBNAME));
 126                 if (!loaderLib.exists()) {
 127                     setErrorMessage(Messages.TraceLibraryPathWizardPage_TraceLoaderLibrary_notExists);
 128                     return false;
 129                 }
 130             } else {
 131                 setErrorMessage(Messages.TraceLibraryPathWizardPage_SpecifiedTraceLibraryLocation_notExists);
 132                 return false;
 133             }
 134         }
 135         setErrorMessage(null);
 136         return true;
 137
 138     }
 139
 140 }