feature: expiremental nui replacment

Author: pollend

nui-core/build.gradle

@@ -0,0 +1,25 @@
+plugins {
+    id 'java-library'
+    id 'maven-publish'
+}
+
+apply from: "$rootDir/gradle/common.gradle"
+
+dependencies {
+    api group: 'org.terasology.gestalt', name: 'gestalt-module', version: '7.0.3'
+    api group: 'org.terasology.gestalt', name: 'gestalt-asset-core', version: '7.0.3'
+
+    api ('org.joml:joml') {
+        version {
+            require jomlVersion
+        }
+    }
+
+    api ('org.terasology.joml-ext:joml-geometry') {
+        version {
+            require geomVersion
+        }
+    }
+
+    implementation group: 'com.google.guava', name: 'guava', version: '23.0'
+}

nui-core/src/main/java/org/terasology/nui/core/UICore.java

@@ -0,0 +1,4 @@
+package org.terasology.nui.core;
+
+public class UICore {
+}

nui-core/src/main/java/org/terasology/nui/core/UIPaintable.java

@@ -0,0 +1,4 @@
+package org.terasology.nui.core;
+
+public interface UIPaintable {
+}

nui-core/src/main/java/org/terasology/nui/core/UISlot.java

@@ -0,0 +1,18 @@
+package org.terasology.nui.core;
+
+import org.terasology.nui.core.bind.BindingFunction;
+
+import java.lang.ref.WeakReference;
+
+public class UISlot<T extends BindingFunction> {
+    private WeakReference<UIWidget> reference;
+    private T handler;
+
+    public UISlot(T handler) {
+        this.handler = handler;
+    }
+
+    public Object invoke(Object[] entry) {
+        return null;
+    }
+}

nui-core/src/main/java/org/terasology/nui/core/UIWidget.java

@@ -0,0 +1,57 @@
+package org.terasology.nui.core;
+
+import org.joml.Vector2f;
+import org.terasology.nui.core.bind.UIProperty;
+import org.terasology.nui.core.bind.UISignal;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+
+public class UIWidget implements AutoCloseable {
+    private UIWidget parent;
+    private List<UIWidget> children = new ArrayList<>();
+    private boolean isFree = false;
+
+    public final UISignal.UISignal0 destroy = new UISignal.UISignal0();
+
+    public final UIProperty<Float> z = new UIProperty<>(0.0f);
+    public final UIProperty<Vector2f> pos = new UIProperty<>(new Vector2f());
+    public final UIProperty<Vector2f> size = new UIProperty<>(new Vector2f());
+
+    public UIWidget(UIWidget parent) {
+        this.parent = parent;
+        this.parent.children.add(this);
+    }
+
+    public UIWidget(UIWidget parent, float z) {
+        this(parent);
+        this.z.set(z);
+    }
+
+    public UIWidget(UIWidget parent, Vector2f pos) {
+        this(parent);
+        this.pos.set(pos);
+    }
+
+    public UIWidget(UIWidget parent, Vector2f pos, Vector2f size) {
+        this(parent);
+        this.pos.set(pos);
+        this.size.set(size);
+    }
+
+    public Collection<UIWidget> children() {
+        return Collections.unmodifiableList(children);
+    }
+
+    public boolean isDisposed() {
+        return isFree;
+    }
+
+    @Override
+    public void close() {
+        this.isFree = true;
+        destroy.send();
+    }
+}

nui-core/src/main/java/org/terasology/nui/core/bind/Binding.java

@@ -0,0 +1,10 @@
+package org.terasology.nui.core.bind;
+
+import org.terasology.nui.core.UIWidget;
+
+public class Binding {
+    public static <T1> void bind(UIWidget wid1, UISignal.UISignal1<T1> signal, UIWidget wid2, UISlot.UISlot1<T1> slot) {
+        BindingPair pair = new BindingPair(wid1, wid2);
+        signal.register(pair, slot);
+    }
+}

nui-core/src/main/java/org/terasology/nui/core/bind/BindingFunction.java

@@ -0,0 +1,4 @@
+package org.terasology.nui.core.bind;
+
+public interface BindingFunction {
+}

nui-core/src/main/java/org/terasology/nui/core/bind/BindingPair.java

@@ -0,0 +1,15 @@
+package org.terasology.nui.core.bind;
+
+import org.terasology.nui.core.UIWidget;
+
+import java.lang.ref.WeakReference;
+
+public class BindingPair {
+    private WeakReference<UIWidget> wid1;
+    private WeakReference<UIWidget> wid2;
+
+    public BindingPair(UIWidget w1, UIWidget w2) {
+        this.wid1 = new WeakReference<>(w1);
+        this.wid2 = new WeakReference<>(w2);
+    }
+}

nui-core/src/main/java/org/terasology/nui/core/bind/Function0.java

@@ -0,0 +1,7 @@
+package org.terasology.nui.core.bind;
+
+
+@FunctionalInterface
+public interface Function0 extends BindingFunction {
+    void apply();
+}

nui-core/src/main/java/org/terasology/nui/core/bind/Function1.java

@@ -0,0 +1,6 @@
+package org.terasology.nui.core.bind;
+
+@FunctionalInterface
+public interface Function1<T1> extends BindingFunction {
+    void apply(T1 t1);
+}