tmf/org.lttng.scope.tmf2.views.ui/src/org/lttng/scope/tmf2/views/ui/timeline/widgets/timegraph/toolbar/nav/NavigationModeFollowArrows.java

   1 /*
   2  * Copyright (C) 2017 EfficiOS Inc., Alexandre Montplaisir <alexmonthy@efficios.com>
   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
  10 package org.lttng.scope.tmf2.views.ui.timeline.widgets.timegraph.toolbar.nav;
  11
  12 import static java.util.Objects.requireNonNull;
  13
  14 import org.lttng.scope.tmf2.views.ui.timeline.widgets.timegraph.TimeGraphWidget;
  15
  16 /**
  17  * Navigation mode using drawn arrows.
  18  *
  19  * If we are currently positioned at an arrow endpoint, it follow the arrow to
  20  * its other endpoint, scrolling vertically if needed.
  21  *
  22  * If we are not at an arrow endpoint, following the current entry backwards or
  23  * forwards until we find one. If we don't find any, do nothing.
  24  *
  25  * @author Alexandre Montplaisir
  26  */
  27 public class NavigationModeFollowArrows extends NavigationMode {
  28
  29     private static final String BACK_ICON_PATH = "/icons/toolbar/nav_arrow_back.gif"; //$NON-NLS-1$
  30     private static final String FWD_ICON_PATH = "/icons/toolbar/nav_arrow_fwd.gif"; //$NON-NLS-1$
  31
  32     /**
  33      * Constructor
  34      */
  35     public NavigationModeFollowArrows() {
  36         super(requireNonNull(Messages.sfFollowArrowsNavModeName),
  37                 BACK_ICON_PATH,
  38                 FWD_ICON_PATH);
  39     }
  40
  41     @Override
  42     public boolean isEnabled() {
  43         return false;
  44     }
  45
  46     @Override
  47     public void navigateBackwards(TimeGraphWidget viewer) {
  48         // TODO NYI
  49         System.out.println("Follow arrows backwards");
  50     }
  51
  52     @Override
  53     public void navigateForwards(TimeGraphWidget viewer) {
  54         // TODO NYI
  55         System.out.println("Follow arrows forwards");
  56     }
  57
  58 }