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

   1 /**********************************************************************
   2  * Copyright (c) 2012, 2013 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.linuxtools.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.linuxtools.internal.lttng2.control.ui.Activator;
  21 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.messages.Messages;
  22 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceChannelComponent;
  23 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceDomainComponent;
  24 import org.eclipse.linuxtools.internal.lttng2.control.ui.views.model.impl.TraceSessionComponent;
  25 import org.eclipse.swt.SWT;
  26 import org.eclipse.swt.custom.CCombo;
  27 import org.eclipse.swt.events.SelectionEvent;
  28 import org.eclipse.swt.events.SelectionListener;
  29 import org.eclipse.swt.graphics.Point;
  30 import org.eclipse.swt.layout.GridData;
  31 import org.eclipse.swt.layout.GridLayout;
  32 import org.eclipse.swt.widgets.Composite;
  33 import org.eclipse.swt.widgets.Control;
  34 import org.eclipse.swt.widgets.Group;
  35 import org.eclipse.swt.widgets.Shell;
  36 import org.eclipse.swt.widgets.Text;
  37
  38 /**
  39  * <p>
  40  * Dialog box for collecting information about the events to enable.
  41  * </p>
  42  *
  43  * @author Bernd Hufmann
  44  */
  45 public class GetEventInfoDialog extends Dialog implements IGetEventInfoDialog {
  46
  47     // ------------------------------------------------------------------------
  48     // Constants
  49     // ------------------------------------------------------------------------
  50     /**
  51      * The icon file for this dialog box.
  52      */
  53     public static final String TARGET_NEW_CONNECTION_ICON_FILE = "icons/elcl16/enable_event.gif"; //$NON-NLS-1$
  54
  55     // ------------------------------------------------------------------------
  56     // Attributes
  57     // ------------------------------------------------------------------------
  58     /**
  59      * The session combo box.
  60      */
  61     private CCombo fSessionsCombo = null;
  62     /**
  63      * The channel combo box.
  64      */
  65     private CCombo fChannelsCombo = null;
  66     /**
  67      * The filter text
  68      */
  69     private Text fFilterText;
  70     /**
  71      * The list of available sessions.
  72      */
  73     private TraceSessionComponent[] fSessions;
  74     /**
  75      * True for kernel, false for UST.
  76      */
  77     private boolean fIsKernel;
  78     /**
  79      * Index in session array (selected session).
  80      */
  81     private int fSessionIndex = 0;
  82     /**
  83      * The Channel where the events should be enabled.
  84      */
  85     private TraceChannelComponent fChannel;
  86     /**
  87      * List of available channels of the selected session.
  88      */
  89     private TraceChannelComponent[] fChannels;
  90     /**
  91      * The filter expression
  92      */
  93     private String fFilterExpression;
  94
  95     // ------------------------------------------------------------------------
  96     // Constructors
  97     // ------------------------------------------------------------------------
  98     /**
  99      * Constructor of dialog box.
 100      * @param shell - the shell for the dialog box
 101      */
 102     public GetEventInfoDialog(Shell shell) {
 103         super(shell);
 104         setShellStyle(SWT.RESIZE | getShellStyle());
 105     }
 106
 107     // ------------------------------------------------------------------------
 108     // Accessors
 109     // ------------------------------------------------------------------------
 110
 111     @Override
 112     public TraceSessionComponent getSession() {
 113         return fSessions[fSessionIndex];
 114     }
 115
 116     @Override
 117     public TraceChannelComponent getChannel() {
 118         return fChannel;
 119     }
 120
 121     @Override
 122     public void setIsKernel(boolean isKernel) {
 123         fIsKernel = isKernel;
 124     }
 125
 126     @Override
 127     public void setSessions(TraceSessionComponent[] sessions) {
 128         fSessions = Arrays.copyOf(sessions, sessions.length);
 129     }
 130
 131     @Override
 132     public String getFilterExpression() {
 133        return fFilterExpression;
 134     }
 135
 136     // ------------------------------------------------------------------------
 137     // Operations
 138     // ------------------------------------------------------------------------
 139
 140     @Override
 141     protected void configureShell(Shell newShell) {
 142         super.configureShell(newShell);
 143         newShell.setText(Messages.TraceControl_EnableEventsDialogTitle);
 144         newShell.setImage(Activator.getDefault().loadIcon(TARGET_NEW_CONNECTION_ICON_FILE));
 145     }
 146
 147     @Override
 148     protected Control createDialogArea(Composite parent) {
 149
 150         // Main dialog panel
 151         Composite dialogComposite = new Composite(parent, SWT.NONE);
 152         GridLayout layout = new GridLayout(1, true);
 153         dialogComposite.setLayout(layout);
 154         dialogComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
 155
 156         Group sessionsGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 157         sessionsGroup.setText(Messages.TraceControl_EnableEventsSessionGroupName);
 158         layout = new GridLayout(1, true);
 159         sessionsGroup.setLayout(layout);
 160         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 161         sessionsGroup.setLayoutData(data);
 162
 163         fSessionsCombo = new CCombo(sessionsGroup, SWT.READ_ONLY);
 164         fSessionsCombo.setToolTipText(Messages.TraceControl_EnableEventsSessionsTooltip);
 165         fSessionsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 166
 167         String items[] = new String[fSessions.length];
 168         for (int i = 0; i < items.length; i++) {
 169             items[i] = String.valueOf(fSessions[i].getName());
 170         }
 171
 172         fSessionsCombo.setItems(items);
 173         fSessionsCombo.setEnabled(fSessions.length > 0);
 174
 175         Group channelsGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 176         channelsGroup.setText(Messages.TraceControl_EnableEventsChannelGroupName);
 177         layout = new GridLayout(1, true);
 178         channelsGroup.setLayout(layout);
 179         data = new GridData(GridData.FILL_HORIZONTAL);
 180         channelsGroup.setLayoutData(data);
 181
 182         fChannelsCombo = new CCombo(channelsGroup, SWT.READ_ONLY);
 183         fChannelsCombo.setToolTipText(Messages.TraceControl_EnableEventsChannelsTooltip);
 184         fChannelsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 185         fChannelsCombo.setEnabled(false);
 186
 187         fSessionsCombo.addSelectionListener(new SelectionListener() {
 188             @Override
 189             public void widgetSelected(SelectionEvent e) {
 190                 fSessionIndex = fSessionsCombo.getSelectionIndex();
 191
 192                 if (fSessionIndex >= 0) {
 193                     TraceDomainComponent domain = null;
 194                     TraceDomainComponent[] domains = fSessions[fSessionIndex].getDomains();
 195                     for (int i = 0; i < domains.length; i++) {
 196
 197                         if (domains[i].isKernel() == fIsKernel) {
 198                             domain = domains[i];
 199                             break;
 200                         }
 201                     }
 202
 203                     if (domain != null) {
 204                         fChannels = domain.getChannels();
 205                         String selectionItems[] = new String[fChannels.length];
 206                         for (int i = 0; i < selectionItems.length; i++) {
 207                             selectionItems[i] = String.valueOf(fChannels[i].getName());
 208                         }
 209                         fChannelsCombo.setItems(selectionItems);
 210                         fChannelsCombo.setEnabled(fChannels.length > 0);
 211                     } else {
 212                         fChannelsCombo.setItems(new String[0]);
 213                         fChannelsCombo.setEnabled(false);
 214                         fChannels = null;
 215                    }
 216                    fChannelsCombo.getParent().getParent().layout();
 217                 }
 218             }
 219
 220             @Override
 221             public void widgetDefaultSelected(SelectionEvent e) {
 222             }
 223         });
 224
 225         // take first session to test whether events filtering is supported or not
 226         if (fSessions[0].isEventFilteringSupported() && !fIsKernel) {
 227             Group filterMainGroup = new Group(dialogComposite, SWT.SHADOW_NONE);
 228             filterMainGroup.setText(Messages.TraceControl_EnableEventsFilterGroupName);
 229             layout = new GridLayout(2, false);
 230             filterMainGroup.setLayout(layout);
 231             data = new GridData(GridData.FILL_HORIZONTAL);
 232             filterMainGroup.setLayoutData(data);
 233
 234             fFilterText = new Text(filterMainGroup, SWT.LEFT);
 235             fFilterText.setToolTipText(Messages.TraceControl_EnableEventsFilterTooltip);
 236             data = new GridData(GridData.FILL_HORIZONTAL);
 237             fFilterText.setLayoutData(data);
 238         }
 239
 240         getShell().setMinimumSize(new Point(300, 200));
 241
 242         return dialogComposite;
 243     }
 244
 245     @Override
 246     protected void createButtonsForButtonBar(Composite parent) {
 247         createButton(parent, IDialogConstants.CANCEL_ID, "&Cancel", true); //$NON-NLS-1$
 248         createButton(parent, IDialogConstants.OK_ID, "&Ok", true); //$NON-NLS-1$
 249     }
 250
 251     @Override
 252     protected void okPressed() {
 253
 254         if (fSessionsCombo.getSelectionIndex() < 0) {
 255             MessageDialog.openError(getShell(),
 256                   Messages.TraceControl_EnableEventsDialogTitle,
 257                   Messages.TraceControl_EnableEventsNoSessionError);
 258             return;
 259         }
 260
 261         fSessionIndex = fSessionsCombo.getSelectionIndex();
 262
 263         // if no channel is available or no channel is selected use default channel indicated by fChannel=null
 264         fChannel = null;
 265         if ((fChannels != null) && (fChannelsCombo.getSelectionIndex() >= 0)) {
 266             fChannel = fChannels[fChannelsCombo.getSelectionIndex()];
 267         }
 268
 269         // initialize filter with null
 270         fFilterExpression = null;
 271         if (fSessions[0].isEventFilteringSupported() && !fIsKernel) {
 272             String tempFilter = fFilterText.getText();
 273
 274             if(!tempFilter.isEmpty() && !tempFilter.matches("\\s*")) { //$NON-NLS-1$
 275                 fFilterExpression = tempFilter;
 276             }
 277         }
 278
 279         super.okPressed();
 280     }
 281 }