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用定义的类型代替FXUtils.addListener中的Pair

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yushijinhun 2018-02-18 16:47:00 +08:00
parent b45907a9f6
commit 3cfcf1e772
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1 changed files with 30 additions and 13 deletions
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43
HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java
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@ -94,20 +94,37 @@ public final class FXUtils {
});
}
public static <T> void addListener(Node node, String key, ObservableValue<T> value, Consumer<T> callback) {
ChangeListener<T> listener = (a, b, newValue) -> callback.accept(newValue);
node.getProperties().put(key, new Pair<>(callback, listener));
value.addListener(listener);
}
private static class ListenerPair<T> {
ObservableValue<T> value;
ChangeListener<? super T> listener;
public static <T> void removeListener(Node node, String key) {
if (node.getProperties().get(key) instanceof Pair) {
Pair pair = (Pair) node.getProperties().get(key);
if (pair.getValue() instanceof ObservableValue && pair.getKey() instanceof ChangeListener) {
((ObservableValue) pair.getValue()).removeListener((ChangeListener) pair.getKey());
}
}
}
ListenerPair(ObservableValue<T> value, ChangeListener<? super T> listener) {
this.value = value;
this.listener = listener;
}
void bind() {
value.addListener(listener);
}
void unbind() {
value.removeListener(listener);
}
}
public static <T> void addListener(Node node, String key, ObservableValue<T> value, Consumer<? super T> callback) {
ListenerPair<T> pair = new ListenerPair<>(value, (a, b, newValue) -> callback.accept(newValue));
node.getProperties().put(key, pair);
pair.bind();
}
public static void removeListener(Node node, String key) {
Lang.convert(node.getProperties().get(key), ListenerPair.class)
.ifPresent(info -> {
info.unbind();
node.getProperties().remove(key);
});
}
public static void setValidateWhileTextChanged(Node field, boolean validate) {
if (field instanceof JFXTextField) {