org.pepstock.charba.client.callbacks.AbstractTooltipLabelCallback Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of charba Show documentation
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.callbacks;

import org.pepstock.charba.client.Defaults;
import org.pepstock.charba.client.IsChart;
import org.pepstock.charba.client.colors.IsColor;
import org.pepstock.charba.client.commons.Constants;
import org.pepstock.charba.client.items.TooltipItem;
import org.pepstock.charba.client.items.TooltipLabelColor;

/**
 * Abstract implementation of tooltip label callback in order to help who will implement it to override ONLY needed methods and use the default for the others.
 * 
 * @author Andrea "Stock" Stocchero
 *
 */
public abstract class AbstractTooltipLabelCallback implements TooltipLabelCallback {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.callbacks.TooltipLabelCallback#onBeforeLabel(org.pepstock.charba.client.IsChart, org.pepstock.charba.client.items.TooltipItem)
	 */
	@Override
	public String onBeforeLabel(IsChart chart, TooltipItem item) {
		return Constants.EMPTY_STRING;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.callbacks.TooltipLabelCallback#onLabel(org.pepstock.charba.client.IsChart, org.pepstock.charba.client.items.TooltipItem)
	 */
	@Override
	public String onLabel(IsChart chart, TooltipItem item) {
		return Constants.EMPTY_STRING;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.callbacks.TooltipLabelCallback#onLabelColor(org.pepstock.charba.client.IsChart, org.pepstock.charba.client.items.TooltipItem)
	 */
	@Override
	public TooltipLabelColor onLabelColor(IsChart chart, TooltipItem item) {
		return null;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.callbacks.TooltipLabelCallback#onLabelTextColor(org.pepstock.charba.client.IsChart, org.pepstock.charba.client.items.TooltipItem)
	 */
	@Override
	public IsColor onLabelTextColor(IsChart chart, TooltipItem item) {
		// checks if chart is consistent
		if (IsChart.isConsistent(chart)) {
			return chart.getOptions().getTooltips().getBodyColor();
		}
		// if here, chart is not consistent
		// then return the default font color
		return Defaults.get().getGlobal().getColor();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.pepstock.charba.client.callbacks.TooltipLabelCallback#onAfterLabel(org.pepstock.charba.client.IsChart, org.pepstock.charba.client.items.TooltipItem)
	 */
	@Override
	public String onAfterLabel(IsChart chart, TooltipItem item) {
		return Constants.EMPTY_STRING;
	}

}