/*
* Copyright 2009 Google Inc.
*
* 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.gwt.accounts.client.impl;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.core.client.JsArrayBoolean;
import com.google.gwt.core.client.JsArrayInteger;
import com.google.gwt.core.client.JsArrayNumber;
import com.google.gwt.core.client.JsArrayString;
/**
* Code adapted from
* http://code.google.com/p/gwt-in-the-air/source/browse/trunk/src/net/ltgt/gwt/jscollections/client/JsArrays.java.
*
* Provides utility methods for interacting with Arrays in GWT.
*/
public final class ArrayHelper {
public static JsArrayString fromArray(String... values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
JsArrayString ret = JavaScriptObject.createArray().cast();
for (int i = 0, l = values.length; i < l; i++) {
ret.set(i, values[i]);
}
return ret;
}
}
public static JsArrayBoolean fromArray(boolean... values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
JsArrayBoolean ret = JavaScriptObject.createArray().cast();
for (int i = 0, l = values.length; i < l; i++) {
ret.set(i, values[i]);
}
return ret;
}
}
public static JsArrayInteger fromArray(int... values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
JsArrayInteger ret = JavaScriptObject.createArray().cast();
for (int i = 0, l = values.length; i < l; i++) {
ret.set(i, values[i]);
}
return ret;
}
}
public static JsArrayNumber fromArray(double... values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
JsArrayNumber ret = JavaScriptObject.createArray().cast();
for (int i = 0, l = values.length; i < l; i++) {
ret.set(i, values[i]);
}
return ret;
}
}
public static <T extends JavaScriptObject> JsArray<T> fromArray(T... values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
JsArray<T> ret = JavaScriptObject.createArray().cast();
for (int i = 0, l = values.length; i < l; i++) {
ret.set(i, values[i]);
}
return ret;
}
}
public static String[] toArray(JsArrayString values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
int length = values.length();
String[] ret = new String[length];
for (int i = 0, l = length; i < l; i++) {
ret[i] = values.get(i);
}
return ret;
}
}
public static boolean[] toArray(JsArrayBoolean values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
int length = values.length();
boolean[] ret = new boolean[length];
for (int i = 0, l = length; i < l; i++) {
ret[i] = values.get(i);
}
return ret;
}
}
public static int[] toArray(JsArrayInteger values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
int length = values.length();
int[] ret = new int[length];
for (int i = 0, l = length; i < l; i++) {
ret[i] = values.get(i);
}
return ret;
}
}
public static double[] toArray(JsArrayNumber values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
int length = values.length();
double[] ret = new double[length];
for (int i = 0, l = length; i < l; i++) {
ret[i] = values.get(i);
}
return ret;
}
}
public static <T extends JavaScriptObject> T[] toArray(JsArray<? extends T> values) {
if (GWT.isScript()) {
return reinterpretCast(values);
} else {
int length = values.length();
@SuppressWarnings("unchecked")
T[] ret = (T[]) new JavaScriptObject[length];
for (int i = 0, l = length; i < l; i++) {
ret[i] = values.get(i);
}
return ret;
}
}
private static native JsArrayString reinterpretCast(String[] value) /*-{ return value; }-*/;
private static native String[] reinterpretCast(JsArrayString value) /*-{ return value; }-*/;
private static native JsArrayBoolean reinterpretCast(boolean[] value) /*-{ return value; }-*/;
private static native boolean[] reinterpretCast(JsArrayBoolean value) /*-{ return value; }-*/;
private static native JsArrayInteger reinterpretCast(int[] value) /*-{ return value; }-*/;
private static native int[] reinterpretCast(JsArrayInteger value) /*-{ return value; }-*/;
private static native JsArrayNumber reinterpretCast(double[] value) /*-{ return value; }-*/;
private static native double[] reinterpretCast(JsArrayNumber value) /*-{ return value; }-*/;
private static native <T extends JavaScriptObject> JsArray<T> reinterpretCast(T[] value) /*-{ return value; }-*/;
private static native <T extends JavaScriptObject> T[] reinterpretCast(JsArray<T> value) /*-{ return value; }-*/;
private ArrayHelper() { }
}