org.tiwonk.util.client.api.GwtRandomGenerator.java Source code

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Here is the source code for org.tiwonk.util.client.api.GwtRandomGenerator.java

Source

package org.tiwonk.util.client.api;

import org.tiwonk.util.shared.RandomGenerator;

import com.google.gwt.user.client.Random;

public class GwtRandomGenerator implements RandomGenerator {

    public GwtRandomGenerator() {
    }

    @Override
    public int nextInt() {
        return Random.nextInt();
    }

    @Override
    public double nextDouble() {
        return Random.nextDouble();
    }

    @Override
    public String nextUid() {
        return nextString(32);
    }

    @Override
    public int nextInt(int limit) {
        int result = (int) (nextDouble() * (limit + 1));
        if (result > limit) {
            result = limit;
        }
        return result;
    }

    @Override
    public String nextString(int length) {
        StringBuilder builder = new StringBuilder(length);

        while (builder.length() < length) {
            builder.append(Integer.toHexString(nextInt()));
        }

        String value = builder.toString();
        return value.substring(0, length);
    }

}
/*******************************************************************************
 * Copyright 2012 Gregory McFall
 * 
 * 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.
 ******************************************************************************/