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// Copyright (C) 2012 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.client.rpc;
import static java.util.stream.Collectors.toCollection;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.user.client.rpc.AsyncCallback;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/** A map of native JSON objects, keyed by a string. */
public class NativeMap<T extends JavaScriptObject> extends JavaScriptObject {
public static <T extends JavaScriptObject> NativeMap<T> create() {
return createObject().cast();
}
/**
* Loop through the result map's entries and copy the key strings into the "name" property of the
* corresponding child object. This only runs on the top level map of the result, and requires the
* children to be JSON objects and not a JSON primitive (e.g. boolean or string).
*/
public static <T extends JavaScriptObject, M extends NativeMap<T>>
AsyncCallback<M> copyKeysIntoChildren(AsyncCallback<M> callback) {
return copyKeysIntoChildren("name", callback);
}
/** Loop through the result map and set asProperty on the children. */
public static <T extends JavaScriptObject, M extends NativeMap<T>>
AsyncCallback<M> copyKeysIntoChildren(String asProperty, AsyncCallback<M> callback) {
return new TransformCallback<M, M>(callback) {
@Override
protected M transform(M result) {
result.copyKeysIntoChildren(asProperty);
return result;
}
};
}
protected NativeMap() {}
public final Set<String> keySet() {
return Natives.keys(this);
}
public final List<String> sortedKeys() {
return keySet().stream().sorted().collect(toCollection(ArrayList::new));
}
public final native JsArray<T> values() /*-{
var s = this;
var v = [];
var i = 0;
for (var k in s) {
if (s.hasOwnProperty(k)) {
v[i++] = s[k];
}
}
return v;
}-*/;
public final int size() {
return keySet().size();
}
public final boolean isEmpty() {
return size() == 0;
}
public final boolean containsKey(String n) {
return get(n) != null;
}
public final native T get(String n) /*-{ return this[n]; }-*/;
public final native void put(String n, T v) /*-{ this[n] = v; }-*/;
public final native void copyKeysIntoChildren(String p) /*-{
var s = this;
for (var k in s) {
if (s.hasOwnProperty(k)) {
var c = s[k];
c[p] = k;
}
}
}-*/;
}
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