org.pepstock.charba.client.data.FloatingDatatFactory Maven / Gradle / Ivy

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Charba, GWT Chart library based on CHART.JS

There is a newer version: 6.5-gwt

/**
    Copyright 2017 Andrea "Stock" Stocchero

    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 org.pepstock.charba.client.data;

import org.pepstock.charba.client.commons.ArrayDouble;
import org.pepstock.charba.client.commons.Checker;
import org.pepstock.charba.client.commons.NativeArrayContainerFactory;

/**
 * Factory to create a floating data from a native array, used for array container lists.

 * The array must contain and only 2 values.
 * 
 * @author Andrea "Stock" Stocchero
 */
public final class FloatingDatatFactory implements NativeArrayContainerFactory {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.commons.NativeArrayContainerFactory#create(org.pepstock.charba.client.commons.Array)
	 */
	@Override
	public FloatingData create(ArrayDouble nativeArray) {
		// checks consistency of array
		if (nativeArray != null) {
			// the array must contains and only 2 values
			Checker.checkIfEqualTo(nativeArray.length(), 2, "Array size");
			// returns floating data
			return new FloatingData(nativeArray);
		}
		// if here, the array is not consistent
		// then it creates an array with NaN values
		return new FloatingData(ArrayDouble.fromOrEmpty(Double.NaN, Double.NaN));
	}

}