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

   1 /**********************************************************************
   2  * Copyright (c) 2012 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  **********************************************************************/
  12 package org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs;
  13
  14 import java.util.Arrays;
  15
  16 import org.eclipse.jface.dialogs.Dialog;
  17 import org.eclipse.jface.dialogs.IDialogConstants;
  18 import org.eclipse.jface.dialogs.MessageDialog;
  19 import org.eclipse.linuxtools.internal.lttng2.ui.Activator;
  20 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.messages.Messages;
  21 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceChannelComponent;
  22 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceDomainComponent;
  23 import org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent;
  24 import org.eclipse.swt.SWT;
  25 import org.eclipse.swt.custom.CCombo;
  26 import org.eclipse.swt.events.SelectionEvent;
  27 import org.eclipse.swt.events.SelectionListener;
  28 import org.eclipse.swt.graphics.Point;
  29 import org.eclipse.swt.layout.GridData;
  30 import org.eclipse.swt.layout.GridLayout;
  31 import org.eclipse.swt.widgets.Composite;
  32 import org.eclipse.swt.widgets.Control;
  33 import org.eclipse.swt.widgets.Group;
  34 import org.eclipse.swt.widgets.Shell;
  35
  36 /**
  37  * <p>
  38  * Dialog box for collecting information about the events to enable.
  39  * </p>
  40  *
  41  * @author Bernd Hufmann
  42  */
  43 public class GetEventInfoDialog extends Dialog implements IGetEventInfoDialog {
  44
  45     // ------------------------------------------------------------------------
  46     // Constants
  47     // ------------------------------------------------------------------------
  48     /**
  49      * The icon file for this dialog box.
  50      */
  51     public static final String TARGET_NEW_CONNECTION_ICON_FILE = "icons/elcl16/enable_event.gif"; //$NON-NLS-1$
  52
  53     // ------------------------------------------------------------------------
  54     // Attributes
  55     // ------------------------------------------------------------------------
  56     /**
  57      * The dialog composite.
  58      */
  59     private Composite fDialogComposite = null;
  60     /**
  61      * The Group for the session combo box.
  62      */
  63     private Group fSessionsGroup = null;
  64     /**
  65      * The Group for the channel combo box.
  66      */
  67     private Group fChannelsGroup = null;
  68     /**
  69      * The session combo box.
  70      */
  71     private CCombo fSessionsCombo = null;
  72     /**
  73      * The channel combo box.
  74      */
  75     private CCombo fChannelsCombo = null;
  76     /**
  77      * The list of available sessions.
  78      */
  79     private TraceSessionComponent[] fSessions;
  80     /**
  81      * True for kernel, false for UST.
  82      */
  83     private boolean fIsKernel;
  84     /**
  85      * Index in session array (selected session).
  86      */
  87     private int fSessionIndex = 0;
  88     /**
  89      * The Channel where the events should be enabled.
  90      */
  91     private TraceChannelComponent fChannel;
  92     /**
  93      * List of available channels of the selected session.
  94      */
  95     private TraceChannelComponent[] fChannels;
  96
  97     // ------------------------------------------------------------------------
  98     // Constructors
  99     // ------------------------------------------------------------------------
 100     /**
 101      * Constructor of dialog box.
 102      * @param shell - the shell for the dialog box
 103      */
 104     public GetEventInfoDialog(Shell shell) {
 105         super(shell);
 106         setShellStyle(SWT.RESIZE);
 107     }
 108
 109     // ------------------------------------------------------------------------
 110     // Accessors
 111     // ------------------------------------------------------------------------
 112     /*
 113      * (non-Javadoc)
 114      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IEnableEventsDialog#getSession()
 115      */
 116     @Override
 117     public TraceSessionComponent getSession() {
 118         return fSessions[fSessionIndex];
 119     }
 120
 121     /*
 122      * (non-Javadoc)
 123      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IEnableEventsDialog#getChannel()
 124      */
 125     @Override
 126     public TraceChannelComponent getChannel() {
 127         return fChannel;
 128     }
 129
 130     /*
 131      * (non-Javadoc)
 132      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IGetEventInfoDialog#setIsKernel(boolean)
 133      */
 134     @Override
 135     public void setIsKernel(boolean isKernel) {
 136         fIsKernel = isKernel;
 137     }
 138
 139     /*
 140      * (non-Javadoc)
 141      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IGetEventInfoDialog#setSessions(org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent[])
 142      */
 143     @Override
 144     public void setSessions(TraceSessionComponent[] sessions) {
 145         fSessions = Arrays.copyOf(sessions, sessions.length);
 146     }
 147
 148     // ------------------------------------------------------------------------
 149     // Operations
 150     // ------------------------------------------------------------------------
 151     /*
 152      * (non-Javadoc)
 153      * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
 154      */
 155     @Override
 156     protected void configureShell(Shell newShell) {
 157         super.configureShell(newShell);
 158         newShell.setText(Messages.TraceControl_EnableEventsDialogTitle);
 159         newShell.setImage(Activator.getDefault().loadIcon(TARGET_NEW_CONNECTION_ICON_FILE));
 160     }
 161
 162     /*
 163      * (non-Javadoc)
 164      * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
 165      */
 166     @Override
 167     protected Control createDialogArea(Composite parent) {
 168
 169         // Main dialog panel
 170         fDialogComposite = new Composite(parent, SWT.NONE);
 171         GridLayout layout = new GridLayout(1, true);
 172         fDialogComposite.setLayout(layout);
 173         fDialogComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
 174
 175         fSessionsGroup = new Group(fDialogComposite, SWT.SHADOW_NONE);
 176         fSessionsGroup.setText(Messages.TraceControl_EnableEventsSessionGroupName);
 177         layout = new GridLayout(1, true);
 178         fSessionsGroup.setLayout(layout);
 179         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 180         fSessionsGroup.setLayoutData(data);
 181
 182         fSessionsCombo = new CCombo(fSessionsGroup, SWT.READ_ONLY);
 183         fSessionsCombo.setToolTipText(Messages.TraceControl_EnableEventsSessionsTooltip);
 184         fSessionsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 185
 186         String items[] = new String[fSessions.length];
 187         for (int i = 0; i < items.length; i++) {
 188             items[i] = String.valueOf(fSessions[i].getName());
 189         }
 190
 191         fSessionsCombo.setItems(items);
 192         fSessionsCombo.setEnabled(fSessions.length > 0);
 193
 194         fChannelsGroup = new Group(fDialogComposite, SWT.SHADOW_NONE);
 195         fChannelsGroup.setText(Messages.TraceControl_EnableEventsChannelGroupName);
 196         layout = new GridLayout(1, true);
 197         fChannelsGroup.setLayout(layout);
 198         data = new GridData(GridData.FILL_HORIZONTAL);
 199         fChannelsGroup.setLayoutData(data);
 200
 201         fChannelsCombo = new CCombo(fChannelsGroup, SWT.READ_ONLY);
 202         fChannelsCombo.setToolTipText(Messages.TraceControl_EnableEventsChannelsTooltip);
 203         fChannelsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 204         fChannelsCombo.setEnabled(false);
 205
 206         fSessionsCombo.addSelectionListener(new SelectionListener() {
 207             @Override
 208             public void widgetSelected(SelectionEvent e) {
 209                 fSessionIndex = fSessionsCombo.getSelectionIndex();
 210
 211                 if (fSessionIndex >= 0) {
 212                     TraceDomainComponent domain = null;
 213                     TraceDomainComponent[] domains = fSessions[fSessionIndex].getDomains();
 214                     for (int i = 0; i < domains.length; i++) {
 215
 216                         if (domains[i].isKernel() == fIsKernel) {
 217                             domain = domains[i];
 218                             break;
 219                         }
 220                     }
 221
 222                     if (domain != null) {
 223                         fChannels = domain.getChannels();
 224                         String items[] = new String[fChannels.length];
 225                         for (int i = 0; i < items.length; i++) {
 226                             items[i] = String.valueOf(fChannels[i].getName());
 227                         }
 228                         fChannelsCombo.setItems(items);
 229                         fChannelsCombo.setEnabled(fChannels.length > 0);
 230                     } else {
 231                         fChannelsCombo.setItems(new String[0]);
 232                         fChannelsCombo.setEnabled(false);
 233                         fChannels = null;
 234                    }
 235                    fChannelsCombo.getParent().getParent().layout();
 236                 }
 237             }
 238
 239             @Override
 240             public void widgetDefaultSelected(SelectionEvent e) {
 241             }
 242         });
 243
 244         getShell().setMinimumSize(new Point(300, 200));
 245
 246         return fDialogComposite;
 247     }
 248
 249     /*
 250      * (non-Javadoc)
 251      * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
 252      */
 253     @Override
 254     protected void createButtonsForButtonBar(Composite parent) {
 255         createButton(parent, IDialogConstants.CANCEL_ID, "&Cancel", true); //$NON-NLS-1$
 256         createButton(parent, IDialogConstants.OK_ID, "&Ok", true); //$NON-NLS-1$
 257     }
 258
 259     /*
 260      * (non-Javadoc)
 261      * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 262      */
 263     @Override
 264     protected void okPressed() {
 265
 266         if (fSessionsCombo.getSelectionIndex() < 0) {
 267             MessageDialog.openError(getShell(),
 268                   Messages.TraceControl_EnableEventsDialogTitle,
 269                   Messages.TraceControl_EnableEventsNoSessionError);
 270             return;
 271         }
 272
 273         fSessionIndex = fSessionsCombo.getSelectionIndex();
 274
 275         if ((fChannels != null) && (fChannels.length > 0) && (fChannelsCombo.getSelectionIndex() < 0)) {
 276             MessageDialog.openError(getShell(),
 277                     Messages.TraceControl_EnableEventsDialogTitle,
 278                     Messages.TraceControl_EnableEventsNoChannelError);
 279               return;
 280         }
 281
 282         if ((fChannels != null) && (fChannels.length > 0)) {
 283             fChannel = fChannels[fChannelsCombo.getSelectionIndex()];
 284         }
 285
 286         super.okPressed();
 287     }
 288 }