Renamed mograsim to net.mograsim

[Mograsim.git] / LogicUI / src / net / mograsim / logic / ui / model / ViewModel.java

diff --git a/LogicUI/src/net/mograsim/logic/ui/model/ViewModel.java b/LogicUI/src/net/mograsim/logic/ui/model/ViewModel.java
new file mode 100644 (file)
index 0000000..717ee13
--- /dev/null
+++ b/LogicUI/src/net/mograsim/logic/ui/model/ViewModel.java
@@ -0,0 +1,110 @@
+package net.mograsim.logic.ui.model;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.function.Consumer;
+
+import net.mograsim.logic.ui.model.components.GUIComponent;
+import net.mograsim.logic.ui.model.wires.GUIWire;
+
+public class ViewModel
+{
+       private final List<GUIComponent> components;
+       private final List<GUIComponent> componentsUnmodifiable;
+       private final List<GUIWire> wires;
+       private final List<GUIWire> wiresUnmodifiable;
+
+       private final List<Consumer<? super GUIComponent>> componentAddedListeners;
+       private final List<Consumer<? super GUIComponent>> componentRemovedListeners;
+       private final List<Consumer<? super GUIWire>> wireAddedListeners;
+       private final List<Consumer<? super GUIWire>> wireRemovedListeners;
+
+       public ViewModel()
+       {
+               components = new ArrayList<>();
+               componentsUnmodifiable = Collections.unmodifiableList(components);
+               wires = new ArrayList<>();
+               wiresUnmodifiable = Collections.unmodifiableList(wires);
+
+               componentAddedListeners = new ArrayList<>();
+               componentRemovedListeners = new ArrayList<>();
+               wireAddedListeners = new ArrayList<>();
+               wireRemovedListeners = new ArrayList<>();
+       }
+
+       /**
+        * Adds the given component to the list of components and calls all componentAddedListeners. Don't call this method from application
+        * code as it is automatically called in GUIComponent::new.
+        */
+       public void componentCreated(GUIComponent component)
+       {
+               if (components.contains(component))
+                       throw new IllegalStateException("Don't add the same component twice!");
+               components.add(component);
+               callComponentAddedListeners(component);
+       }
+
+       /**
+        * Removes the given component from the list of components and calls all componentRemovedListeners. Don't call this method from
+        * application code as it is automatically called in GUIComponent::destroy.
+        */
+       public void componentDestroyed(GUIComponent component)
+       {
+               if (!components.contains(component))
+                       throw new IllegalStateException("Don't remove the same component twice!");
+               components.remove(component);
+               callComponentRemovedListeners(component);
+       }
+
+       /**
+        * Adds the given component to the list of components and calls all componentAddedListeners. Don't call this method from application
+        * code as it is automatically called in GUIComponent::new.
+        */
+       public void wireCreated(GUIWire wire)
+       {
+               if (wires.contains(wire))
+                       throw new IllegalStateException("Don't add the same wire twice!");
+               wires.add(wire);
+               callWireAddedListeners(wire);
+       }
+
+       /**
+        * Removes the given component from the list of components and calls all componentRemovedListeners. Don't call this method from
+        * application code as it is automatically called in GUIComponent::destroy.
+        */
+       public void wireDestroyed(GUIWire wire)
+       {
+               if (!wires.contains(wire))
+                       throw new IllegalStateException("Don't remove the same wire twice!");
+               wires.remove(wire);
+               callWireRemovedListeners(wire);
+       }
+
+       public List<GUIComponent> getComponents()
+       {
+               return componentsUnmodifiable;
+       }
+
+       public List<GUIWire> getWires()
+       {
+               return wiresUnmodifiable;
+       }
+
+       // @formatter:off
+       public void addComponentAddedListener     (Consumer<? super GUIComponent> listener){componentAddedListeners  .add   (listener);}
+       public void addComponentRemovedListener   (Consumer<? super GUIComponent> listener){componentRemovedListeners.add   (listener);}
+       public void addWireAddedListener          (Consumer<? super GUIWire     > listener){wireAddedListeners       .add   (listener);}
+       public void addWireRemovedListener        (Consumer<? super GUIWire     > listener){wireRemovedListeners     .add   (listener);}
+
+       public void removeComponentAddedListener  (Consumer<? super GUIComponent> listener){componentAddedListeners  .remove(listener);}
+       public void removeComponentRemovedListener(Consumer<? super GUIComponent> listener){componentRemovedListeners.remove(listener);}
+       public void removeWireAddedListener       (Consumer<? super GUIWire     > listener){wireAddedListeners       .remove(listener);}
+       public void removeWireRemovedListener     (Consumer<? super GUIWire     > listener){wireRemovedListeners     .remove(listener);}
+
+       private void callComponentAddedListeners  (GUIComponent c) {componentAddedListeners  .forEach(l -> l.accept(c));}
+       private void callComponentRemovedListeners(GUIComponent c) {componentRemovedListeners.forEach(l -> l.accept(c));}
+       private void callWireAddedListeners       (GUIWire w     ) {wireAddedListeners       .forEach(l -> l.accept(w));}
+       private void callWireRemovedListeners     (GUIWire w     ) {wireRemovedListeners     .forEach(l -> l.accept(w));}
+       // @formatter:on
+}
\ No newline at end of file