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 import org.eclipse.swt.widgets.Text;
  36
  37 /**
  38  * <p>
  39  * Dialog box for collecting information about the events to enable.
  40  * </p>
  41  *
  42  * @author Bernd Hufmann
  43  */
  44 public class GetEventInfoDialog extends Dialog implements IGetEventInfoDialog {
  45
  46     // ------------------------------------------------------------------------
  47     // Constants
  48     // ------------------------------------------------------------------------
  49     /**
  50      * The icon file for this dialog box.
  51      */
  52     public static final String TARGET_NEW_CONNECTION_ICON_FILE = "icons/elcl16/enable_event.gif"; //$NON-NLS-1$
  53
  54     // ------------------------------------------------------------------------
  55     // Attributes
  56     // ------------------------------------------------------------------------
  57     /**
  58      * The dialog composite.
  59      */
  60     private Composite fDialogComposite = null;
  61     /**
  62      * The Group for the session combo box.
  63      */
  64     private Group fSessionsGroup = null;
  65     /**
  66      * The Group for the channel combo box.
  67      */
  68     private Group fChannelsGroup = null;
  69     /**
  70      * The session combo box.
  71      */
  72     private CCombo fSessionsCombo = null;
  73     /**
  74      * The channel combo box.
  75      */
  76     private CCombo fChannelsCombo = null;
  77     /**
  78      * The filter text
  79      */
  80     private Text fFilterText;
  81     /**
  82      * The list of available sessions.
  83      */
  84     private TraceSessionComponent[] fSessions;
  85     /**
  86      * True for kernel, false for UST.
  87      */
  88     private boolean fIsKernel;
  89     /**
  90      * Index in session array (selected session).
  91      */
  92     private int fSessionIndex = 0;
  93     /**
  94      * The Channel where the events should be enabled.
  95      */
  96     private TraceChannelComponent fChannel;
  97     /**
  98      * List of available channels of the selected session.
  99      */
 100     private TraceChannelComponent[] fChannels;
 101     /**
 102      * The filter expression
 103      */
 104     private String fFilterExpression;
 105
 106     // ------------------------------------------------------------------------
 107     // Constructors
 108     // ------------------------------------------------------------------------
 109     /**
 110      * Constructor of dialog box.
 111      * @param shell - the shell for the dialog box
 112      */
 113     public GetEventInfoDialog(Shell shell) {
 114         super(shell);
 115         setShellStyle(SWT.RESIZE);
 116     }
 117
 118     // ------------------------------------------------------------------------
 119     // Accessors
 120     // ------------------------------------------------------------------------
 121     /*
 122      * (non-Javadoc)
 123      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IEnableEventsDialog#getSession()
 124      */
 125     @Override
 126     public TraceSessionComponent getSession() {
 127         return fSessions[fSessionIndex];
 128     }
 129
 130     /*
 131      * (non-Javadoc)
 132      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IEnableEventsDialog#getChannel()
 133      */
 134     @Override
 135     public TraceChannelComponent getChannel() {
 136         return fChannel;
 137     }
 138
 139     /*
 140      * (non-Javadoc)
 141      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IGetEventInfoDialog#setIsKernel(boolean)
 142      */
 143     @Override
 144     public void setIsKernel(boolean isKernel) {
 145         fIsKernel = isKernel;
 146     }
 147
 148     /*
 149      * (non-Javadoc)
 150      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IGetEventInfoDialog#setSessions(org.eclipse.linuxtools.internal.lttng2.ui.views.control.model.impl.TraceSessionComponent[])
 151      */
 152     @Override
 153     public void setSessions(TraceSessionComponent[] sessions) {
 154         fSessions = Arrays.copyOf(sessions, sessions.length);
 155     }
 156     /*
 157      * (non-Javadoc)
 158      * @see org.eclipse.linuxtools.internal.lttng2.ui.views.control.dialogs.IGetEventInfoDialog#getFilterExpression()
 159      */
 160     @Override
 161     public String getFilterExpression() {
 162        return fFilterExpression;
 163     }
 164
 165     // ------------------------------------------------------------------------
 166     // Operations
 167     // ------------------------------------------------------------------------
 168     /*
 169      * (non-Javadoc)
 170      * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
 171      */
 172     @Override
 173     protected void configureShell(Shell newShell) {
 174         super.configureShell(newShell);
 175         newShell.setText(Messages.TraceControl_EnableEventsDialogTitle);
 176         newShell.setImage(Activator.getDefault().loadIcon(TARGET_NEW_CONNECTION_ICON_FILE));
 177     }
 178
 179     /*
 180      * (non-Javadoc)
 181      * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
 182      */
 183     @Override
 184     protected Control createDialogArea(Composite parent) {
 185
 186         // Main dialog panel
 187         fDialogComposite = new Composite(parent, SWT.NONE);
 188         GridLayout layout = new GridLayout(1, true);
 189         fDialogComposite.setLayout(layout);
 190         fDialogComposite.setLayoutData(new GridData(GridData.FILL_BOTH));
 191
 192         fSessionsGroup = new Group(fDialogComposite, SWT.SHADOW_NONE);
 193         fSessionsGroup.setText(Messages.TraceControl_EnableEventsSessionGroupName);
 194         layout = new GridLayout(1, true);
 195         fSessionsGroup.setLayout(layout);
 196         GridData data = new GridData(GridData.FILL_HORIZONTAL);
 197         fSessionsGroup.setLayoutData(data);
 198
 199         fSessionsCombo = new CCombo(fSessionsGroup, SWT.READ_ONLY);
 200         fSessionsCombo.setToolTipText(Messages.TraceControl_EnableEventsSessionsTooltip);
 201         fSessionsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 202
 203         String items[] = new String[fSessions.length];
 204         for (int i = 0; i < items.length; i++) {
 205             items[i] = String.valueOf(fSessions[i].getName());
 206         }
 207
 208         fSessionsCombo.setItems(items);
 209         fSessionsCombo.setEnabled(fSessions.length > 0);
 210
 211         fChannelsGroup = new Group(fDialogComposite, SWT.SHADOW_NONE);
 212         fChannelsGroup.setText(Messages.TraceControl_EnableEventsChannelGroupName);
 213         layout = new GridLayout(1, true);
 214         fChannelsGroup.setLayout(layout);
 215         data = new GridData(GridData.FILL_HORIZONTAL);
 216         fChannelsGroup.setLayoutData(data);
 217
 218         fChannelsCombo = new CCombo(fChannelsGroup, SWT.READ_ONLY);
 219         fChannelsCombo.setToolTipText(Messages.TraceControl_EnableEventsChannelsTooltip);
 220         fChannelsCombo.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 221         fChannelsCombo.setEnabled(false);
 222
 223         fSessionsCombo.addSelectionListener(new SelectionListener() {
 224             @Override
 225             public void widgetSelected(SelectionEvent e) {
 226                 fSessionIndex = fSessionsCombo.getSelectionIndex();
 227
 228                 if (fSessionIndex >= 0) {
 229                     TraceDomainComponent domain = null;
 230                     TraceDomainComponent[] domains = fSessions[fSessionIndex].getDomains();
 231                     for (int i = 0; i < domains.length; i++) {
 232
 233                         if (domains[i].isKernel() == fIsKernel) {
 234                             domain = domains[i];
 235                             break;
 236                         }
 237                     }
 238
 239                     if (domain != null) {
 240                         fChannels = domain.getChannels();
 241                         String selectionItems[] = new String[fChannels.length];
 242                         for (int i = 0; i < selectionItems.length; i++) {
 243                             selectionItems[i] = String.valueOf(fChannels[i].getName());
 244                         }
 245                         fChannelsCombo.setItems(selectionItems);
 246                         fChannelsCombo.setEnabled(fChannels.length > 0);
 247                     } else {
 248                         fChannelsCombo.setItems(new String[0]);
 249                         fChannelsCombo.setEnabled(false);
 250                         fChannels = null;
 251                    }
 252                    fChannelsCombo.getParent().getParent().layout();
 253                 }
 254             }
 255
 256             @Override
 257             public void widgetDefaultSelected(SelectionEvent e) {
 258             }
 259         });
 260
 261         // take first session to test whether events filtering is supported or not
 262         if (fSessions[0].isEventFilteringSupported() && !fIsKernel) {
 263             Group filterMainGroup = new Group(fDialogComposite, SWT.SHADOW_NONE);
 264             filterMainGroup.setText(Messages.TraceControl_EnableEventsFilterGroupName);
 265             layout = new GridLayout(2, false);
 266             filterMainGroup.setLayout(layout);
 267             data = new GridData(GridData.FILL_HORIZONTAL);
 268             filterMainGroup.setLayoutData(data);
 269
 270             fFilterText = new Text(filterMainGroup, SWT.LEFT);
 271             fFilterText.setToolTipText(Messages.TraceControl_EnableEventsFilterTooltip);
 272             data = new GridData(GridData.FILL_HORIZONTAL);
 273             fFilterText.setLayoutData(data);
 274         }
 275
 276         getShell().setMinimumSize(new Point(300, 200));
 277
 278         return fDialogComposite;
 279     }
 280
 281     /*
 282      * (non-Javadoc)
 283      * @see org.eclipse.jface.dialogs.Dialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
 284      */
 285     @Override
 286     protected void createButtonsForButtonBar(Composite parent) {
 287         createButton(parent, IDialogConstants.CANCEL_ID, "&Cancel", true); //$NON-NLS-1$
 288         createButton(parent, IDialogConstants.OK_ID, "&Ok", true); //$NON-NLS-1$
 289     }
 290
 291     /*
 292      * (non-Javadoc)
 293      * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 294      */
 295     @Override
 296     protected void okPressed() {
 297
 298         if (fSessionsCombo.getSelectionIndex() < 0) {
 299             MessageDialog.openError(getShell(),
 300                   Messages.TraceControl_EnableEventsDialogTitle,
 301                   Messages.TraceControl_EnableEventsNoSessionError);
 302             return;
 303         }
 304
 305         fSessionIndex = fSessionsCombo.getSelectionIndex();
 306
 307         // if no channel is available or no channel is selected use default channel indicated by fChannel=null
 308         fChannel = null;
 309         if ((fChannels != null) && (fChannelsCombo.getSelectionIndex() >= 0)) {
 310             fChannel = fChannels[fChannelsCombo.getSelectionIndex()];
 311         }
 312
 313         // initialize filter with null
 314         fFilterExpression = null;
 315         if (fSessions[0].isEventFilteringSupported() && !fIsKernel) {
 316             String tempFilter = fFilterText.getText();
 317
 318             if(!tempFilter.matches("\\s*")) { //$NON-NLS-1$
 319                 fFilterExpression = tempFilter;
 320             }
 321         }
 322
 323         super.okPressed();
 324     }
 325 }