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/*
 * Copyright 2013 serso aka se.solovyev
 *
 * 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.
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Contact details
 *
 * Email: [email protected]
 * Site:  http://se.solovyev.org
 */

package org.solovyev.android.view;

import org.solovyev.common.text.Formatter;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

/**
 * User: serso
 * Date: 8/10/12
 * Time: 12:08 AM
 */
public class IntegerRange extends NumberRange {

	public IntegerRange(@Nonnull Integer min,
						@Nonnull Integer max,
						@Nonnull Integer step,
						int startPosition,
						@Nullable Formatter formatter) {
		super(min, max, step, startPosition, formatter);
	}

	@Nonnull
	public static NumberRange newInstance(@Nonnull Integer min, @Nonnull Integer max, @Nonnull Integer step, @Nonnull Integer selected) {
		if (selected < min || selected > max) {
			throw new IllegalArgumentException("Selected value: " + selected + " should be >= " + min + " and <= " + max + "!");
		}

		int startPosition = 0;
		for (int i = min; i < selected; i += step) {
			startPosition += 1;
		}

		return new IntegerRange(min, max, step, startPosition, null);
	}

	@Override
	protected int getCount(@Nonnull Integer min, @Nonnull Integer max, @Nonnull Integer step) {
		// (4 - 0)/1 + 1= 5
		// (4 - 0)/2 + 1 = 3
		// (4 - 1)/2 + 1 = 2
		return (max - min) / step + 1;
	}

	@Nonnull
	@Override
	protected Integer getValueAt(int position, @Nonnull Integer min, @Nonnull Integer max, @Nonnull Integer step) {
		return min + position * step;
	}
}