lttng/org.eclipse.tracecompass.lttng2.control.ui/src/org/eclipse/tracecompass/internal/lttng2/control/ui/views/dialogs/GetEventInfoDialog.java

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2014 Ericsson
   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  *   Bernd Hufmann - Initial API and implementation
  11  *   Bernd Hufmann - Updated for support of LTTng Tools 2.1
  12  **********************************************************************/
  13 package org.eclipse.tracecompass.internal.lttng2.control.ui.views.dialogs;
  14
  15 import java.util.Arrays;
  16
  17 import org.eclipse.jface.dialogs.Dialog;
  18 import org.eclipse.jface.dialogs.IDialogConstants;
  19 import org.eclipse.jface.dialogs.MessageDialog;
  20 import org.eclipse.swt.SWT;
  21 import org.eclipse.swt.custom.CCombo;
  22 import org.eclipse.swt.events.SelectionEvent;
  23 import org.eclipse.swt.events.SelectionListener;
  24 import org.eclipse.swt.graphics.Point;
  25 import org.eclipse.swt.layout.GridData;
  26 import org.eclipse.swt.layout.GridLayout;
  27 import org.eclipse.swt.widgets.Composite;
  28 import org.eclipse.swt.widgets.Control;
  29 import org.eclipse.swt.widgets.Group;
  30 import org.eclipse.swt.widgets.Shell;
  31 import org.eclipse.swt.widgets.Text;
  32 import org.eclipse.tracecompass.internal.lttng2.control.core.model.TraceDomainType;
  33 import org.eclipse.tracecompass.internal.lttng2.control.ui.Activator;
  34 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.messages.Messages;
  35 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceChannelComponent;
  36 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  37 import org.eclipse.tracecompass.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  38
  39 /**
  40  * <p>
  41  * Dialog box for collecting information about the events to enable.
  42  * </p>
  43  *
  44  * @author Bernd Hufmann
  45  */
  46 public class GetEventInfoDialog extends Dialog implements IGetEventInfoDialog {
  47
  48     // ------------------------------------------------------------------------
  49     // Constants
  50     // ------------------------------------------------------------------------
  51     /**
  52      * The icon file for this dialog box.
  53      */
  54     public static final String TARGET_NEW_CONNECTION_ICON_FILE = "icons/elcl16/enable_event.gif"; //$NON-NLS-1$
  55
  56     // ------------------------------------------------------------------------
  57     // Attributes
  58     // ------------------------------------------------------------------------
  59     /**
  60      * The session combo box.
  61      */
  62     private CCombo fSessionsCombo = null;
  63     /**
  64      * The channel combo box.
  65      */
  66     private CCombo fChannelsCombo = null;
  67     /**
  68      * The filter text
  69      */
  70     private Text fFilterText;
  71     /**
  72      * The list of available sessions.
  73      */
  74     private TraceSessionComponent[] fSessions;
  75     /**
  76      * The domain type ({@link TraceDomainType})
  77      */
  78     private TraceDomainType fDomain;
  79     /**
  80      * Index in session array (selected session).
  81      */
  82     private int fSessionIndex = 0;
  83     /**
  84      * The Channel where the events should be enabled.
  85      */
  86     private TraceChannelComponent fChannel;
  87     /**
  88      * List of available channels of the selected session.
  89      */
  90     private TraceChannelComponent[] fChannels;
  91     /**
  92      * The filter expression
  93      */
  94     private String fFilterExpression;
  95
  96     // ------------------------------------------------------------------------
  97     // Constructors
  98     // ------------------------------------------------------------------------
  99     /**
 100      * Constructor of dialog box.
 101      * @param shell - the shell for the dialog box
 102      */
 103     public GetEventInfoDialog(Shell shell) {
 104         super(shell);
 105         setShellStyle(SWT.RESIZE | getShellStyle());
 106     }
 107
 108     // ------------------------------------------------------------------------
 109     // Accessors
 110     // ------------------------------------------------------------------------
 111
 112     @Override
 113     public TraceSessionComponent getSession() {
 114         return fSessions[fSessionIndex];
 115     }
 116
 117     @Override
 118     public TraceChannelComponent getChannel() {
 119         return fChannel;
 120     }
 121
 122     @Override
 123     public void setDomain(TraceDomainType domain) {
 124         fDomain = domain;
 125     }
 126
 127     @Override
 128     public void setSessions(TraceSessionComponent[] sessions) {
 129         fSessions = Arrays.copyOf(sessions, sessions.length);
 130     }
 131
 132     @Override
 133     public String getFilterExpression() {
 134        return fFilterExpression;
 135     }
 136
 137     // ------------------------------------------------------------------------
 138     // Operations
 139     // ------------------------------------------------------------------------
 140
 141     @Override
 142     protected void configureShell(Shell newShell) {
 143         super.configureShell(newShell);
 144         newShell.setText(Messages.TraceControl_EnableEventsDialogTitle);
 145         newShell.setImage(Activator.getDefault().loadIcon(TARGET_NEW_CONNECTION_ICON_FILE));
 146     }
 147
 148     @Override
 149     protected Control createDialogArea(Composite parent) {
 150
 151         // Main dialog panel
 152         Composite dialogComposite = new Composite(parent, SWT.NONE);
 153         GridLayout layout = new GridLayout(1, true);
 154         dialogComposite.setLayout(layout);
 155         dialogComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
 156
 157         Group sessionsGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 158         sessionsGroup.setText(Messages.TraceControl_EnableEventsSessionGroupName);
 159         layout = new GridLayout(1, true);
 160         sessionsGroup.setLayout(layout);
 161         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 162         sessionsGroup.setLayoutData(data);
 163
 164         fSessionsCombo = new CCombo(sessionsGroup, SWT.READ_ONLY);
 165         fSessionsCombo.setToolTipText(Messages.TraceControl_EnableEventsSessionsTooltip);
 166         fSessionsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 167
 168         String items[] = new String[fSessions.length];
 169         for (int i = 0; i < items.length; i++) {
 170             items[i] = String.valueOf(fSessions[i].getName());
 171         }
 172
 173         fSessionsCombo.setItems(items);
 174         fSessionsCombo.setEnabled(fSessions.length > 0);
 175
 176         Group channelsGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 177         channelsGroup.setText(Messages.TraceControl_EnableEventsChannelGroupName);
 178         layout = new GridLayout(1, true);
 179         channelsGroup.setLayout(layout);
 180         data = new GridData(GridData.FILL_HORIZONTAL);
 181         channelsGroup.setLayoutData(data);
 182
 183         fChannelsCombo = new CCombo(channelsGroup, SWT.READ_ONLY);
 184         fChannelsCombo.setToolTipText(Messages.TraceControl_EnableEventsChannelsTooltip);
 185         fChannelsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 186         fChannelsCombo.setEnabled(false);
 187
 188         fSessionsCombo.addSelectionListener(new SelectionListener() {
 189             @Override
 190             public void widgetSelected(SelectionEvent e) {
 191                 fSessionIndex = fSessionsCombo.getSelectionIndex();
 192
 193                 if (fSessionIndex >= 0) {
 194                     TraceDomainComponent domain = null;
 195                     TraceDomainComponent[] domains = fSessions[fSessionIndex].getDomains();
 196                     for (int i = 0; i < domains.length; i++) {
 197
 198                         if (domains[i].getDomain().equals(fDomain)) {
 199                             domain = domains[i];
 200                             break;
 201                         }
 202                     }
 203
 204                     if (domain != null) {
 205                         fChannels = domain.getChannels();
 206                         String selectionItems[] = new String[fChannels.length];
 207                         for (int i = 0; i < selectionItems.length; i++) {
 208                             selectionItems[i] = String.valueOf(fChannels[i].getName());
 209                         }
 210                         fChannelsCombo.setItems(selectionItems);
 211                         fChannelsCombo.setEnabled(fChannels.length > 0);
 212                     } else {
 213                         fChannelsCombo.setItems(new String[0]);
 214                         fChannelsCombo.setEnabled(false);
 215                         fChannels = null;
 216                    }
 217                    fChannelsCombo.getParent().getParent().layout();
 218                 }
 219             }
 220
 221             @Override
 222             public void widgetDefaultSelected(SelectionEvent e) {
 223             }
 224         });
 225
 226         // take first session to test whether events filtering is supported or not
 227         if (fSessions[0].isEventFilteringSupported(fDomain)) {
 228             Group filterMainGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 229             filterMainGroup.setText(Messages.TraceControl_EnableEventsFilterGroupName);
 230             layout = new GridLayout(2, false);
 231             filterMainGroup.setLayout(layout);
 232             data = new GridData(GridData.FILL_HORIZONTAL);
 233             filterMainGroup.setLayoutData(data);
 234
 235             fFilterText = new Text(filterMainGroup, SWT.LEFT);
 236             fFilterText.setToolTipText(Messages.TraceControl_EnableEventsFilterTooltip);
 237             data = new GridData(GridData.FILL_HORIZONTAL);
 238             fFilterText.setLayoutData(data);
 239         }
 240
 241         getShell().setMinimumSize(new Point(300, 200));
 242
 243         return dialogComposite;
 244     }
 245
 246     @Override
 247     protected void createButtonsForButtonBar(Composite parent) {
 248         createButton(parent, IDialogConstants.CANCEL_ID, "&Cancel", true); //$NON-NLS-1$
 249         createButton(parent, IDialogConstants.OK_ID, "&Ok", true); //$NON-NLS-1$
 250     }
 251
 252     @Override
 253     protected void okPressed() {
 254
 255         if (fSessionsCombo.getSelectionIndex() < 0) {
 256             MessageDialog.openError(getShell(),
 257                   Messages.TraceControl_EnableEventsDialogTitle,
 258                   Messages.TraceControl_EnableEventsNoSessionError);
 259             return;
 260         }
 261
 262         fSessionIndex = fSessionsCombo.getSelectionIndex();
 263
 264         // if no channel is available or no channel is selected use default channel indicated by fChannel=null
 265         fChannel = null;
 266         if ((fChannels != null) && (fChannelsCombo.getSelectionIndex() >= 0)) {
 267             fChannel = fChannels[fChannelsCombo.getSelectionIndex()];
 268         }
 269
 270         // initialize filter with null
 271         fFilterExpression = null;
 272         if (fSessions[0].isEventFilteringSupported(fDomain)) {
 273             String tempFilter = fFilterText.getText();
 274
 275             if(!tempFilter.trim().isEmpty()) {
 276                 fFilterExpression = tempFilter;
 277             }
 278         }
 279
 280         super.okPressed();
 281     }
 282 }