Improved listener system

[Mograsim.git] / LogicUI / src / era / mi / gui / model / components / GUIComponent.java

diff --git a/LogicUI/src/era/mi/gui/model/components/GUIComponent.java b/LogicUI/src/era/mi/gui/model/components/GUIComponent.java
index 75a7a53..7f4107d 100644 (file)
--- a/LogicUI/src/era/mi/gui/model/components/GUIComponent.java
+++ b/LogicUI/src/era/mi/gui/model/components/GUIComponent.java
@@ -3,6 +3,7 @@ package era.mi.gui.model.components;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.function.Consumer;
 
 import era.mi.gui.model.ViewModel;
 import era.mi.gui.model.wires.Pin;
@@ -16,18 +17,29 @@ public abstract class GUIComponent
        private final List<Pin> pins;
        protected final List<Pin> pinsUnmodifiable;
 
+       private final List<Consumer<GUIComponent>> componentChangedListeners;
+       private final List<Consumer<GUIComponent>> componentMovedListeners;
+       private final List<Consumer<Pin>> pinAddedListeners;
+       private final List<Consumer<Pin>> pinRemovedListeners;
+
        public GUIComponent(ViewModel model)
        {
                this.model = model;
                this.bounds = new Rectangle(0, 0, 0, 0);
                this.pins = new ArrayList<>();
                this.pinsUnmodifiable = Collections.unmodifiableList(pins);
+
+               this.componentChangedListeners = new ArrayList<>();
+               this.componentMovedListeners = new ArrayList<>();
+               this.pinAddedListeners = new ArrayList<>();
+               this.pinRemovedListeners = new ArrayList<>();
        }
 
        public void moveTo(double x, double y)
        {
                bounds.x = x;
                bounds.y = y;
+               callComponentMovedListeners();
        }
 
        /**
@@ -55,6 +67,23 @@ public abstract class GUIComponent
                return pinsUnmodifiable;
        }
 
+       // @formatter:off
+       public void addComponentChangedListener   (Consumer<GUIComponent> listener) {componentChangedListeners.add   (listener);}
+       public void addComponentMovedListener     (Consumer<GUIComponent> listener) {componentMovedListeners  .add   (listener);}
+       public void addPinAddedListener           (Consumer<Pin         > listener) {pinAddedListeners        .add   (listener);}
+       public void addPinRemovedListener         (Consumer<Pin         > listener) {pinRemovedListeners      .add   (listener);}
+
+       public void removeComponentChangedListener(Consumer<GUIComponent> listener) {componentChangedListeners.remove(listener);}
+       public void removeComponentMovedListener  (Consumer<GUIComponent> listener) {componentMovedListeners  .remove(listener);}
+       public void removePinAddedListener        (Consumer<Pin         > listener) {pinAddedListeners        .remove(listener);}
+       public void removePinRemovedListener      (Consumer<Pin         > listener) {pinRemovedListeners      .remove(listener);}
+
+       private void callComponentChangedListeners(     ) {componentChangedListeners.forEach(l -> l.accept(this));}
+       private void callComponentMovedListeners  (     ) {componentMovedListeners  .forEach(l -> l.accept(this));}
+       private void callPinAddedListeners        (Pin p) {pinAddedListeners        .forEach(l -> l.accept(p   ));}
+       private void callPinRemovedListeners      (Pin p) {pinRemovedListeners      .forEach(l -> l.accept(p   ));}
+       // @formatter:on
+
        /**
         * Render this component to the given gc.
         */
@@ -64,15 +93,18 @@ public abstract class GUIComponent
        {
                bounds.width = width;
                bounds.height = height;
+               callComponentChangedListeners();
        }
 
        protected void addPin(Pin pin)
-       {// TODO notify pins they are "created"
+       {
                pins.add(pin);
+               callPinAddedListeners(pin);
        }
 
        protected void removePin(Pin pin)
-       {// TODO notify pins they are "destroyed"
+       {
                pins.remove(pin);
+               callPinRemovedListeners(pin);
        }
 }
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