[3262] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[17246] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[3262] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Drawing;
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[15287] | 24 | using System.Threading;
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| 25 | using System.Threading.Tasks;
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[3262] | 26 | using HeuristicLab.Common;
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[16662] | 27 | using HEAL.Attic;
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[3262] | 28 |
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| 29 | namespace HeuristicLab.Core {
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| 30 | [Item("Executable", "A base class for executables.")]
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[16662] | 31 | [StorableType("17DFB815-4CF8-49EB-BC4A-98059064DB31")]
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[3262] | 32 | public abstract class Executable : Item, IExecutable {
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[7201] | 33 | public static new Image StaticItemImage {
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| 34 | get { return HeuristicLab.Common.Resources.VSImageLibrary.Event; }
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| 35 | }
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[3262] | 36 | public override Image ItemImage {
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[3351] | 37 | get {
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[5287] | 38 | if (ExecutionState == ExecutionState.Prepared) return HeuristicLab.Common.Resources.VSImageLibrary.ExecutablePrepared;
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| 39 | else if (ExecutionState == ExecutionState.Started) return HeuristicLab.Common.Resources.VSImageLibrary.ExecutableStarted;
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| 40 | else if (ExecutionState == ExecutionState.Paused) return HeuristicLab.Common.Resources.VSImageLibrary.ExecutablePaused;
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| 41 | else if (ExecutionState == ExecutionState.Stopped) return HeuristicLab.Common.Resources.VSImageLibrary.ExecutableStopped;
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[7201] | 42 | else return base.ItemImage;
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[3351] | 43 | }
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[3262] | 44 | }
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| 45 |
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| 46 | [Storable]
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| 47 | private ExecutionState executionState;
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| 48 | public ExecutionState ExecutionState {
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| 49 | get { return executionState; }
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| 50 | private set {
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| 51 | if (executionState != value) {
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| 52 | executionState = value;
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| 53 | OnExecutionStateChanged();
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[3351] | 54 | OnItemImageChanged();
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[3262] | 55 | }
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| 56 | }
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| 57 | }
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| 58 |
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| 59 | [Storable]
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| 60 | private TimeSpan executionTime;
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| 61 | public TimeSpan ExecutionTime {
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| 62 | get { return executionTime; }
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| 63 | protected set {
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| 64 | executionTime = value;
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| 65 | OnExecutionTimeChanged();
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| 66 | }
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| 67 | }
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| 68 |
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[4722] | 69 | [StorableConstructor]
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[16662] | 70 | protected Executable(StorableConstructorFlag _) : base(_) { }
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[4722] | 71 | protected Executable(Executable original, Cloner cloner)
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| 72 | : base(original, cloner) {
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| 73 | executionState = original.executionState;
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| 74 | executionTime = original.executionTime;
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| 75 | }
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[3262] | 76 | protected Executable() {
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| 77 | executionState = ExecutionState.Stopped;
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| 78 | executionTime = TimeSpan.Zero;
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| 79 | }
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| 80 |
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| 81 | public virtual void Prepare() {
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| 82 | if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused) && (ExecutionState != ExecutionState.Stopped))
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| 83 | throw new InvalidOperationException(string.Format("Prepare not allowed in execution state \"{0}\".", ExecutionState));
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| 84 | ExecutionTime = TimeSpan.Zero;
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| 85 | }
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| 86 | public virtual void Start() {
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[15287] | 87 | Start(CancellationToken.None);
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| 88 | }
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| 89 | public virtual void Start(CancellationToken cancellationToken) {
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[3262] | 90 | if ((ExecutionState != ExecutionState.Prepared) && (ExecutionState != ExecutionState.Paused))
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| 91 | throw new InvalidOperationException(string.Format("Start not allowed in execution state \"{0}\".", ExecutionState));
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| 92 | }
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[15287] | 93 | public virtual async Task StartAsync() { await StartAsync(CancellationToken.None); }
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| 94 | public virtual async Task StartAsync(CancellationToken cancellationToken) {
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| 95 | await AsyncHelper.DoAsync(Start, cancellationToken);
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| 96 | }
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[3262] | 97 | public virtual void Pause() {
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| 98 | if (ExecutionState != ExecutionState.Started)
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| 99 | throw new InvalidOperationException(string.Format("Pause not allowed in execution state \"{0}\".", ExecutionState));
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| 100 | }
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| 101 | public virtual void Stop() {
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| 102 | if ((ExecutionState != ExecutionState.Started) && (ExecutionState != ExecutionState.Paused))
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| 103 | throw new InvalidOperationException(string.Format("Stop not allowed in execution state \"{0}\".", ExecutionState));
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| 104 | }
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| 105 |
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| 106 | public event EventHandler ExecutionStateChanged;
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| 107 | protected virtual void OnExecutionStateChanged() {
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| 108 | EventHandler handler = ExecutionStateChanged;
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| 109 | if (handler != null) handler(this, EventArgs.Empty);
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| 110 | }
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| 111 | public event EventHandler ExecutionTimeChanged;
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| 112 | protected virtual void OnExecutionTimeChanged() {
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| 113 | EventHandler handler = ExecutionTimeChanged;
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| 114 | if (handler != null) handler(this, EventArgs.Empty);
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| 115 | }
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| 116 | public event EventHandler Prepared;
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| 117 | protected virtual void OnPrepared() {
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| 118 | ExecutionState = ExecutionState.Prepared;
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| 119 | EventHandler handler = Prepared;
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| 120 | if (handler != null) handler(this, EventArgs.Empty);
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| 121 | }
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| 122 | public event EventHandler Started;
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| 123 | protected virtual void OnStarted() {
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| 124 | ExecutionState = ExecutionState.Started;
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| 125 | EventHandler handler = Started;
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| 126 | if (handler != null) handler(this, EventArgs.Empty);
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| 127 | }
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| 128 | public event EventHandler Paused;
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| 129 | protected virtual void OnPaused() {
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| 130 | ExecutionState = ExecutionState.Paused;
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| 131 | EventHandler handler = Paused;
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| 132 | if (handler != null) handler(this, EventArgs.Empty);
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| 133 | }
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| 134 | public event EventHandler Stopped;
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| 135 | protected virtual void OnStopped() {
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| 136 | ExecutionState = ExecutionState.Stopped;
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| 137 | EventHandler handler = Stopped;
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| 138 | if (handler != null) handler(this, EventArgs.Empty);
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| 139 | }
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| 140 | public event EventHandler<EventArgs<Exception>> ExceptionOccurred;
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| 141 | protected virtual void OnExceptionOccurred(Exception exception) {
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| 142 | EventHandler<EventArgs<Exception>> handler = ExceptionOccurred;
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| 143 | if (handler != null) handler(this, new EventArgs<Exception>(exception));
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| 144 | }
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| 145 | }
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| 146 | }
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