org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/project/dialogs/TraceLibraryPathPropertyPage.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
  13 package org.eclipse.linuxtools.lttng.ui.views.project.dialogs;
  14
  15 import java.io.File;
  16
  17 import org.eclipse.core.resources.IProject;
  18 import org.eclipse.core.resources.IResource;
  19 import org.eclipse.linuxtools.lttng.ui.TraceHelper;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.events.ModifyEvent;
  22 import org.eclipse.swt.events.ModifyListener;
  23 import org.eclipse.swt.events.SelectionAdapter;
  24 import org.eclipse.swt.events.SelectionEvent;
  25 import org.eclipse.swt.layout.GridData;
  26 import org.eclipse.swt.layout.GridLayout;
  27 import org.eclipse.swt.widgets.Button;
  28 import org.eclipse.swt.widgets.Composite;
  29 import org.eclipse.swt.widgets.Control;
  30 import org.eclipse.swt.widgets.DirectoryDialog;
  31 import org.eclipse.swt.widgets.Display;
  32 import org.eclipse.swt.widgets.Label;
  33 import org.eclipse.swt.widgets.Text;
  34 import org.eclipse.ui.dialogs.PropertyPage;
  35
  36 public class TraceLibraryPathPropertyPage extends PropertyPage {
  37
  38     private static final String LTTVTRACEREAD_LOADER_LIBNAME = "lttvtraceread_loader";
  39     private Button browsePathButton;
  40     private Text traceLibraryPath;
  41
  42     @Override
  43     protected Control createContents(Composite parent) {
  44         Composite client = new Composite(parent, SWT.NONE);
  45         client.setLayoutData(new GridData(GridData.FILL_BOTH));
  46
  47         GridLayout layout = new GridLayout(3, false);
  48         layout.marginHeight = 0;
  49         layout.marginWidth = 0;
  50         client.setLayout(layout);
  51
  52         Label label = new Label(client, SWT.NONE);
  53         label.setText(Messages.TraceLibraryPath_label);
  54         traceLibraryPath = new Text(client, SWT.BORDER);
  55         traceLibraryPath.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true,
  56                 false));
  57         traceLibraryPath.addModifyListener(new ModifyListener() {
  58
  59             @Override
  60             public void modifyText(ModifyEvent e) {
  61                 setValid(validateInputs());
  62             }
  63
  64         });
  65         browsePathButton = new Button(client, SWT.PUSH);
  66         browsePathButton.setLayoutData(new GridData(SWT.END, SWT.CENTER, false,
  67                 false));
  68         browsePathButton.setText(Messages.TraceLibraryPath_browseBtn);
  69         browsePathButton.addSelectionListener(new SelectionAdapter() {
  70
  71             @Override
  72             public void widgetSelected(SelectionEvent e) {
  73                 String dir = new DirectoryDialog(Display.getDefault()
  74                         .getActiveShell()).open();
  75                 if (dir != null) {
  76                     traceLibraryPath.setText(dir);
  77                 }
  78
  79             }
  80
  81         });
  82         performDefaults();
  83         return client;
  84     }
  85
  86     public boolean validateInputs() {
  87         String path = traceLibraryPath.getText();
  88         if (path != null && !path.trim().isEmpty()) {
  89             File file = new File(path);
  90             if (file.exists() && file.isDirectory()) {
  91                 File loaderLib = new File(path,
  92                         System.mapLibraryName(LTTVTRACEREAD_LOADER_LIBNAME));
  93                 if (!loaderLib.exists()) {
  94                     setErrorMessage(Messages.TraceLibraryPathWizardPage_TraceLoaderLibrary_notExists);
  95                     return false;
  96                 }
  97             } else {
  98                 setErrorMessage(Messages.TraceLibraryPathWizardPage_SpecifiedTraceLibraryLocation_notExists);
  99                 return false;
 100             }
 101         }
 102         setErrorMessage(null);
 103         return true;
 104     }
 105
 106     @Override
 107     protected void performDefaults() {
 108         IResource resource = (IResource) getElement().getAdapter(
 109                 IResource.class);
 110         IProject project = resource.getProject();
 111         if (project != null) {
 112             String traceLibDir = TraceHelper.getTraceLibDirFromProject(project);
 113             if (traceLibDir != null) {
 114                 traceLibraryPath.setText(traceLibDir);
 115             }
 116         }
 117         super.performDefaults();
 118     }
 119
 120     @Override
 121     public boolean performOk() {
 122         IResource resource = (IResource) getElement().getAdapter(
 123                 IResource.class);
 124         IProject project = resource.getProject();
 125         boolean ok = false;
 126         if (project != null) {
 127             String libPath = traceLibraryPath.getText();
 128             if (libPath == null || libPath.trim().isEmpty())
 129                 ok = TraceHelper.removeProjectPreference(project,
 130                         "traceLibraryPath");
 131             else
 132                 ok = TraceHelper.setProjectPreference(project,
 133                         "traceLibraryPath", traceLibraryPath.getText());
 134         }
 135         return ok && super.performOk();
 136     }
 137
 138 }