plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/editors/SimulationViewEditor.java

   1 package net.mograsim.plugin.editors;
   2
   3 import java.io.ByteArrayInputStream;
   4 import java.util.Optional;
   5
   6 import org.eclipse.core.resources.IFile;
   7 import org.eclipse.core.runtime.CoreException;
   8 import org.eclipse.core.runtime.IProgressMonitor;
   9 import org.eclipse.jface.util.SafeRunnable;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.events.MouseEvent;
  12 import org.eclipse.swt.events.MouseTrackListener;
  13 import org.eclipse.swt.layout.GridData;
  14 import org.eclipse.swt.layout.GridLayout;
  15 import org.eclipse.swt.widgets.Button;
  16 import org.eclipse.swt.widgets.Composite;
  17 import org.eclipse.swt.widgets.Display;
  18 import org.eclipse.swt.widgets.Label;
  19 import org.eclipse.swt.widgets.Slider;
  20 import org.eclipse.ui.IEditorInput;
  21 import org.eclipse.ui.IEditorSite;
  22 import org.eclipse.ui.IFileEditorInput;
  23 import org.eclipse.ui.PartInitException;
  24 import org.eclipse.ui.part.EditorPart;
  25
  26 import net.haspamelodica.swt.helper.zoomablecanvas.helper.ZoomableCanvasUserInput;
  27 import net.mograsim.logic.core.LogicObserver;
  28 import net.mograsim.logic.core.components.CoreClock;
  29 import net.mograsim.logic.model.LogicExecuter;
  30 import net.mograsim.logic.model.LogicUICanvas;
  31 import net.mograsim.machine.Machine;
  32 import net.mograsim.plugin.nature.MachineContext;
  33 import net.mograsim.plugin.nature.ProjectMachineContext;
  34
  35 //TODO what if we open multiple editors?
  36 //TODO actually save / load register and latch states
  37 public class SimulationViewEditor extends EditorPart
  38 {
  39         private MachineContext context;
  40
  41         private LogicExecuter exec;
  42         private Machine machine;
  43
  44         private Composite parent;
  45         private Button sbseButton;
  46         private Button pauseButton;
  47         private Slider simSpeedSlider;
  48         private LogicUICanvas canvas;
  49         private Label noMachineLabel;
  50
  51         @Override
  52         public void createPartControl(Composite parent)
  53         {
  54                 this.parent = parent;
  55                 // initialize UI
  56                 parent.setLayout(new GridLayout());
  57
  58                 noMachineLabel = new Label(parent, SWT.NONE);
  59                 noMachineLabel.setText("No machine present...");// TODO internationalize?
  60                 addSimulationControlWidgets(parent);
  61                 recreateContextDependentControls();
  62         }
  63
  64         private void recreateContextDependentControls()
  65         {
  66                 if (parent == null)
  67                         // createPartControls has not been called yet
  68                         return;
  69
  70                 if (canvas != null)
  71                         canvas.dispose();
  72                 if (exec != null)
  73                         exec.stopLiveExecution();
  74
  75                 Optional<Machine> machineOptional;
  76                 if (context != null && (machineOptional = context.getActiveMachine()).isPresent())
  77                 {
  78                         noMachineLabel.setVisible(false);
  79                         sbseButton.setEnabled(true);
  80                         pauseButton.setEnabled(true);
  81                         simSpeedSlider.setEnabled(true);
  82                         machine = machineOptional.get();
  83                         canvas = new LogicUICanvas(parent, SWT.NONE, machine.getModel());
  84                         ZoomableCanvasUserInput userInput = new ZoomableCanvasUserInput(canvas);
  85                         userInput.buttonDrag = 3;
  86                         userInput.buttonZoom = 2;
  87                         userInput.enableUserInput();
  88
  89                         GridData uiData = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.FILL_BOTH);
  90                         canvas.setLayoutData(uiData);
  91
  92                         // initialize executer
  93                         exec = new LogicExecuter(machine.getTimeline());
  94                         exec.startLiveExecution();
  95                 } else
  96                 {
  97                         noMachineLabel.setVisible(true);
  98                         sbseButton.setEnabled(false);
  99                         pauseButton.setEnabled(false);
 100                         simSpeedSlider.setEnabled(false);
 101                 }
 102         }
 103
 104         private void addSimulationControlWidgets(Composite parent)
 105         {
 106                 Composite c = new Composite(parent, SWT.NONE);
 107                 c.setLayout(new GridLayout(7, false));
 108
 109                 sbseButton = new Button(c, SWT.CHECK);
 110                 pauseButton = new Button(c, SWT.TOGGLE);
 111                 LogicObserver clockObserver = o ->
 112                 {
 113                         if (((CoreClock) o).isOn())
 114                         {
 115                                 exec.pauseLiveExecution();
 116                                 Display.getDefault().asyncExec(() ->
 117                                 {
 118                                         pauseButton.setSelection(false);
 119                                         setPauseText(pauseButton, false);
 120                                 });
 121                         }
 122                 };
 123
 124                 sbseButton.setText("Step by step execution");
 125                 sbseButton.addListener(SWT.Selection, e ->
 126                 {
 127                         CoreClock cl = machine.getClock();
 128                         if (sbseButton.getSelection())
 129                                 cl.registerObserver(clockObserver);
 130                         else
 131                                 cl.deregisterObserver(clockObserver);
 132                 });
 133                 sbseButton.setSelection(false);
 134
 135                 pauseButton.setSelection(true);
 136                 setPauseText(pauseButton, false);
 137
 138                 pauseButton.addListener(SWT.Selection, e ->
 139                 {
 140                         setPauseText(pauseButton, false);
 141                         if (pauseButton.getSelection())
 142                         {
 143                                 exec.unpauseLiveExecution();
 144                         } else
 145                         {
 146                                 exec.pauseLiveExecution();
 147                         }
 148                 });
 149                 pauseButton.addMouseTrackListener(new MouseTrackListener()
 150                 {
 151                         @Override
 152                         public void mouseHover(MouseEvent e)
 153                         {
 154                                 // nothing
 155                         }
 156
 157                         @Override
 158                         public void mouseExit(MouseEvent e)
 159                         {
 160                                 setPauseText(pauseButton, false);
 161                         }
 162
 163                         @Override
 164                         public void mouseEnter(MouseEvent e)
 165                         {
 166                                 setPauseText(pauseButton, true);
 167                         }
 168                 });
 169
 170                 Label speedLabel = new Label(c, SWT.NONE);
 171                 speedLabel.setText("Simulation Speed: ");
 172
 173                 simSpeedSlider = new Slider(c, SWT.NONE);
 174                 simSpeedSlider.setMinimum(1);
 175                 simSpeedSlider.setMaximum(100 + simSpeedSlider.getThumb());
 176                 simSpeedSlider.setIncrement(1);
 177
 178                 Label speedPercentageLabel = new Label(c, SWT.NONE);
 179                 speedPercentageLabel.setText("100%");
 180
 181                 simSpeedSlider.addListener(SWT.Selection, e ->
 182                 {
 183                         int selection = simSpeedSlider.getSelection();
 184                         speedPercentageLabel.setText(selection + "%");
 185
 186                         exec.setSpeedPercentage(simSpeedSlider.getSelection());
 187                 });
 188                 simSpeedSlider.setSelection(100);
 189
 190                 c.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL));
 191                 c.pack();
 192         }
 193
 194         private static void setPauseText(Button pauseButton, boolean hovered)
 195         {
 196                 if (hovered)
 197                         if (pauseButton.getSelection())
 198                                 pauseButton.setText("Pause?");
 199                         else
 200                                 pauseButton.setText("Resume?");
 201                 else if (pauseButton.getSelection())
 202                         pauseButton.setText("Running");
 203                 else
 204                         pauseButton.setText("Paused");
 205         }
 206
 207         @Override
 208         public void init(IEditorSite site, IEditorInput input) throws PartInitException
 209         {
 210                 if (input instanceof IFileEditorInput)
 211                 {
 212                         IFileEditorInput fileInput = (IFileEditorInput) input;
 213                         context = ProjectMachineContext.getMachineContextOf(fileInput.getFile().getProject());
 214                         recreateContextDependentControls();
 215
 216                         setPartName(fileInput.getName());
 217                         open(fileInput.getFile());
 218                 } else
 219                         throw new IllegalArgumentException("SimulationViewEditor can only be used with Files");
 220
 221                 setSite(site);
 222                 setInput(input);
 223         }
 224
 225         @Override
 226         public void doSave(IProgressMonitor monitor)
 227         {
 228                 IEditorInput input = getEditorInput();
 229                 if (input instanceof IFileEditorInput)
 230                         SafeRunnable.getRunner().run(() -> save(((IFileEditorInput) input).getFile(), monitor));
 231                 else
 232                         throw new IllegalArgumentException("SimulationViewEditor can only be used with Files");
 233         }
 234
 235         private void save(IFile file, IProgressMonitor monitor) throws CoreException
 236         {
 237                 file.setContents(new ByteArrayInputStream("actual contents will go here".getBytes()), 0, monitor);
 238         }
 239
 240         private void open(IFile file)
 241         {
 242                 // do nothing yet
 243         }
 244
 245         @Override
 246         public void doSaveAs()
 247         {
 248                 throw new UnsupportedOperationException();
 249         }
 250
 251         @Override
 252         public boolean isDirty()
 253         {
 254                 return false;
 255         }
 256
 257         @Override
 258         public boolean isSaveAsAllowed()
 259         {
 260                 return false;
 261         }
 262
 263         @Override
 264         public void setFocus()
 265         {
 266                 canvas.setFocus();
 267         }
 268
 269         @Override
 270         public void dispose()
 271         {
 272                 exec.stopLiveExecution();
 273                 super.dispose();
 274         }
 275 }