net.mograsim.logic.ui/src/net/mograsim/logic/ui/model/components/GUIComponent.java

   1 package net.mograsim.logic.ui.model.components;
   2
   3 import java.util.ArrayList;
   4 import java.util.Collection;
   5 import java.util.Collections;
   6 import java.util.HashMap;
   7 import java.util.List;
   8 import java.util.Map;
   9 import java.util.TreeMap;
  10 import java.util.function.Consumer;
  11 import java.util.function.Supplier;
  12
  13 import net.haspamelodica.swt.helper.gcs.GeneralGC;
  14 import net.haspamelodica.swt.helper.swtobjectwrappers.Rectangle;
  15 import net.mograsim.logic.ui.model.ViewModelModifiable;
  16 import net.mograsim.logic.ui.model.wires.Pin;
  17
  18 public abstract class GUIComponent
  19 {
  20         protected final ViewModelModifiable model;
  21         private final Rectangle bounds;
  22         private final Map<String, Pin> pinsByName;
  23         protected final Collection<Pin> pinsUnmodifiable;
  24
  25         private final List<Consumer<? super GUIComponent>> componentMovedListeners;
  26         private final List<Consumer<? super Pin>> pinAddedListeners;
  27         private final List<Consumer<? super Pin>> pinRemovedListeners;
  28         private final List<Runnable> redrawListeners;
  29
  30         private final Runnable redrawListenerForSubcomponents;
  31         // Defines how the GUIComponent is referenced in SubmodelComponentParams
  32         protected Supplier<String> identifierDelegate = () -> "class:".concat(getClass().getCanonicalName());
  33
  34         public GUIComponent(ViewModelModifiable model)
  35         {
  36                 this.model = model;
  37                 this.bounds = new Rectangle(0, 0, 0, 0);
  38                 this.pinsByName = new HashMap<>();
  39                 this.pinsUnmodifiable = Collections.unmodifiableCollection(pinsByName.values());
  40
  41                 this.componentMovedListeners = new ArrayList<>();
  42                 this.pinAddedListeners = new ArrayList<>();
  43                 this.pinRemovedListeners = new ArrayList<>();
  44                 this.redrawListeners = new ArrayList<>();
  45
  46                 redrawListenerForSubcomponents = this::callRedrawListeners;
  47
  48                 model.componentCreated(this);
  49         }
  50
  51         public void destroy()
  52         {
  53                 pinsByName.values().forEach(p -> pinRemovedListeners.forEach(l -> l.accept(p)));
  54                 model.componentDestroyed(this);
  55         }
  56
  57         public void moveTo(double x, double y)
  58         {
  59                 bounds.x = x;
  60                 bounds.y = y;
  61                 callComponentMovedListeners();
  62         }
  63
  64         /**
  65          * Returns the bounds of this component. Used for calculating which component is clicked.
  66          */
  67         public Rectangle getBounds()
  68         {
  69                 return new Rectangle(bounds.x, bounds.y, bounds.width, bounds.height);
  70         }
  71
  72         /**
  73          * Called when this component is clicked. Absolute coordinates of the click are given. Returns true if this component consumed this
  74          * click.
  75          */
  76         @SuppressWarnings({ "static-method", "unused" }) // this method is inteded to be overridden
  77         public boolean clicked(double x, double y)
  78         {
  79                 return false;
  80         }
  81
  82         /**
  83          * Returns a collection of pins of this component.
  84          */
  85         public Collection<Pin> getPins()
  86         {
  87                 return pinsUnmodifiable;
  88         }
  89
  90         public Pin getPin(String name)
  91         {
  92                 return pinsByName.get(name);
  93         }
  94
  95         // @formatter:off
  96         public void addComponentMovedListener   (Consumer<? super GUIComponent> listener) {componentMovedListeners.add   (listener);}
  97         public void addPinAddedListener         (Consumer<? super Pin         > listener) {pinAddedListeners      .add   (listener);}
  98         public void addPinRemovedListener       (Consumer<? super Pin         > listener) {pinRemovedListeners    .add   (listener);}
  99         public void addRedrawListener           (Runnable                       listener) {redrawListeners        .add   (listener);}
 100
 101         public void removeComponentMovedListener(Consumer<? super GUIComponent> listener) {componentMovedListeners .remove(listener);}
 102         public void removePinAddedListener      (Consumer<? super Pin         > listener) {pinAddedListeners       .remove(listener);}
 103         public void removePinRemovedListener    (Consumer<? super Pin         > listener) {pinRemovedListeners     .remove(listener);}
 104         public void removeRedrawListener        (Runnable                       listener) {redrawListeners         .remove(listener);}
 105
 106         private void callComponentMovedListeners(     ) {componentMovedListeners.forEach(l -> l.accept(this));}
 107         private void callPinAddedListeners      (Pin p) {pinAddedListeners      .forEach(l -> l.accept(p   ));}
 108         private void callPinRemovedListeners    (Pin p) {pinRemovedListeners    .forEach(l -> l.accept(p   ));}
 109         private void callRedrawListeners        (     ) {redrawListeners        .forEach(l -> l.run(       ));}
 110         // @formatter:on
 111
 112         /**
 113          * Render this component to the given gc.
 114          */
 115         public abstract void render(GeneralGC gc, Rectangle visibleRegion);
 116
 117         protected void requestRedraw()
 118         {
 119                 callRedrawListeners();
 120         }
 121
 122         protected void setSize(double width, double height)
 123         {
 124                 bounds.width = width;
 125                 bounds.height = height;
 126                 callRedrawListeners();
 127         }
 128
 129         protected void addPin(Pin pin)
 130         {
 131                 if (pinsByName.containsKey(pin.name))
 132                         throw new IllegalArgumentException("Duplicate pin name: " + pin.name);
 133                 pinsByName.put(pin.name, pin);
 134                 callPinAddedListeners(pin);
 135                 pin.addRedrawListener(redrawListenerForSubcomponents);
 136                 callRedrawListeners();
 137         }
 138
 139         protected void removePin(String name)
 140         {
 141                 Pin pin = pinsByName.remove(name);
 142                 callPinRemovedListeners(pin);
 143                 pin.removeRedrawListener(redrawListenerForSubcomponents);
 144                 callRedrawListeners();
 145         }
 146
 147         /**
 148          * @return an identifier used to reference this GUIComponent inside of {@link SubmodelComponentParams}
 149          */
 150         public String getIdentifier()
 151         {
 152                 return identifierDelegate.get();
 153         }
 154
 155         @SuppressWarnings("static-method")
 156         public Map<String, Object> getInstantiationParameters()
 157         {
 158                 return new TreeMap<>();
 159         }
 160 }