Add MappedProperty & reservedSelectedPropertyFor(CheckBox)

HMCLCore/src/main/java/org/jackhuang/hmcl/util/javafx/ExtendedProperties.java

@@ -30,6 +30,7 @@ import javafx.beans.WeakInvalidationListener;
 import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.Property;
 import javafx.collections.ObservableList;
+import javafx.scene.control.CheckBox;
 import javafx.scene.control.ComboBox;
 import javafx.scene.control.SelectionModel;
 import javafx.scene.control.Toggle;
@@ -38,9 +39,9 @@ import javafx.scene.control.ToggleGroup;
 /**
  * @author yushijinhun
  */
-public final class SelectedItemProperties {
+public final class ExtendedProperties {
 
-    private static final String PROP_PREFIX = SelectedItemProperties.class.getName();
+    private static final String PROP_PREFIX = ExtendedProperties.class.getName();
 
     // ==== ComboBox ====
     @SuppressWarnings("unchecked")
@@ -123,6 +124,16 @@ public final class SelectedItemProperties {
     }
     // ====
 
-    private SelectedItemProperties() {
+    // ==== CheckBox ====
+    @SuppressWarnings("unchecked")
+    public static ObjectProperty<Boolean> reservedSelectedPropertyFor(CheckBox checkbox) {
+        return (ObjectProperty<Boolean>) checkbox.getProperties().computeIfAbsent(
+                PROP_PREFIX + ".checkbox.reservedSelected",
+                any -> new MappedProperty<>(checkbox, "ext.reservedSelected",
+                        checkbox.selectedProperty(), it -> !it, it -> !it));
+    }
+    // ====
+
+    private ExtendedProperties() {
     }
 }

HMCLCore/src/main/java/org/jackhuang/hmcl/util/javafx/MappedProperty.java

@@ -0,0 +1,88 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.util.javafx;
+
+import java.util.function.Function;
+
+import javafx.beans.binding.Bindings;
+import javafx.beans.binding.ObjectBinding;
+import javafx.beans.property.Property;
+import javafx.beans.property.SimpleObjectProperty;
+import javafx.beans.value.ObservableValue;
+
+/**
+ * @author yushijinhun
+ */
+public class MappedProperty<T, U> extends SimpleObjectProperty<U> {
+
+	private final Property<T> predecessor;
+	private final Function<U, T> reservedMapper;
+
+	private final ObjectBinding<U> binding;
+
+	public MappedProperty(Property<T> predecessor, Function<T, U> mapper, Function<U, T> reservedMapper) {
+		this(null, "", predecessor, mapper, reservedMapper);
+	}
+
+	public MappedProperty(Object bean, String name, Property<T> predecessor, Function<T, U> mapper, Function<U, T> reservedMapper) {
+		super(bean, name);
+		this.predecessor = predecessor;
+		this.reservedMapper = reservedMapper;
+
+        binding = new ObjectBinding<U>() {
+			{
+				bind(predecessor);
+			}
+
+			@Override
+			protected U computeValue() {
+				return mapper.apply(predecessor.getValue());
+			}
+
+			@Override
+			protected void onInvalidating() {
+				MappedProperty.this.fireValueChangedEvent();
+			}
+		};
+	}
+
+	@Override
+	public U get() {
+		return binding.get();
+	}
+
+	@Override
+	public void set(U value) {
+		predecessor.setValue(reservedMapper.apply(value));
+	}
+
+	@Override
+	public void bind(ObservableValue<? extends U> observable) {
+		predecessor.bind(Bindings.createObjectBinding(() -> reservedMapper.apply(observable.getValue()), observable));
+	}
+
+	@Override
+	public void unbind() {
+		predecessor.unbind();
+	}
+
+	@Override
+	public boolean isBound() {
+		return predecessor.isBound();
+	}
+}