JQPlotReplotBehavior.java

package fr.openwide.core.wicket.more.jqplot.behavior;

import java.io.Serializable;

import org.apache.wicket.Component;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.wicketstuff.wiquery.core.events.Event;
import org.wicketstuff.wiquery.core.events.EventLabel;
import org.wicketstuff.wiquery.core.events.WiQueryEventBehavior;
import org.wicketstuff.wiquery.core.javascript.JsScope;
import org.wicketstuff.wiquery.core.javascript.JsStatement;
import org.wicketstuff.wiquery.core.javascript.JsUtils;

import fr.openwide.core.wicket.more.jqplot.plugin.adddomreference.JQPlotAddDomReferenceResourceReference;

/**
 * A behavior that will replot JQPlot's plots whenever a JS event occurs.
 * <p>This behavior is most commonly used to replot when the visibility of a plot
 * changes, for instance when switching tabs.
 */
public class JQPlotReplotBehavior extends WiQueryEventBehavior {
	
	private static final long serialVersionUID = 8757328427949400346L;
	
	/**
	 * @param eventLabel The label of the event on which to trigger the replot.
	 */
	public JQPlotReplotBehavior(String eventLabel) {
		this(null, eventLabel);
	}

	/**
	 * @param eventLabel The label of the event on which to trigger the replot.
	 */
	public JQPlotReplotBehavior(EventLabel eventLabel) {
		this(null, eventLabel);
	}

	/**
	 * @param context A parent component that contains every JQPlot to replot (and only those).
	 * @param eventLabel The label of the event on which to trigger the replot.
	 */
	public JQPlotReplotBehavior(Component context, String eventLabel) {
		this(context, new ArbitraryEventLabel(eventLabel));
	}

	/**
	 * @param context A parent component that contains every JQPlot to replot (and only those).
	 * @param eventLabel The labels of the events on which to trigger the replot.
	 */
	public JQPlotReplotBehavior(final Component context, EventLabel ... eventLabels) {
		super(new Event(eventLabels) {
			private static final long serialVersionUID = 1L;
			@Override
			public JsScope callback() {
				return JsScope.quickScope(
						new JsStatement().$(context, ".jqplot-target:visible")
								.each(JsScope.quickScope(
										new JsStatement().append("$(this)").chain("data", JsUtils.quotes("jqplot")).chain("replot")
								))
				);
			}
		});
	}
	
	@Override
	@SuppressWarnings("deprecation")
	public void renderHead(Component component, IHeaderResponse response) {
		super.renderHead(component, response);
		response.render(JavaScriptHeaderItem.forReference(JQPlotAddDomReferenceResourceReference.get()));
	}
	
	private static final class ArbitraryEventLabel implements EventLabel, Serializable {
		private static final long serialVersionUID = 1L;
		private final String eventLabel;
		
		public ArbitraryEventLabel(String eventLabel) {
			super();
			this.eventLabel = eventLabel;
		}

		@Override
		public String getEventLabel() {
			return eventLabel;
		}
	}

}