wicket.extensions.wizard.NextButton Maven / Gradle / Ivy

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/*
 * $Id: org.eclipse.jdt.ui.prefs 5004 2006-03-17 20:47:08 -0800 (Fri, 17 Mar
 * 2006) eelco12 $ $Revision: 5004 $ $Date: 2006-03-17 20:47:08 -0800 (Fri, 17
 * Mar 2006) $
 * 
 * ==============================================================================
 * 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 wicket.extensions.wizard;


/**
 * Models a next button in the wizard. When pressed, it calls
 * {@link IWizardStep#applyState()} on the active wizard step, and then moves
 * the wizard state to the next step of the model by calling
 * {@link IWizardModel#next() next} on the wizard's model.
 * 
 * @author Eelco Hillenius
 */
public final class NextButton extends WizardButton
{
	private static final long serialVersionUID = 1L;

	/**
	 * Construct.
	 * 
	 * @param id
	 * @param wizard
	 */
	public NextButton(String id, IWizard wizard)
	{
		super(id, wizard, "wicket.extensions.wizard.next");
	}

	/**
	 * @see wicket.Component#isEnabled()
	 */
	public final boolean isEnabled()
	{
		IWizardModel wizardModel = getWizardModel();
		return !wizardModel.isLastStep(wizardModel.getActiveStep());
	}

	/**
	 * @see wicket.extensions.wizard.WizardButton#onClick()
	 */
	public final void onClick()
	{
		IWizardModel wizardModel = getWizardModel();
		IWizardStep step = wizardModel.getActiveStep();

		// let the step apply any state
		step.applyState();

		// if the step completed after applying the state, move the
		// model onward
		if (step.isComplete())
		{
			wizardModel.next();
		}
		else
		{
			error(getLocalizer().getString(
					"wicket.extensions.wizard.NextButton.step.did.not.complete", this));
		}
	}

	/**
	 * @see wicket.Component#onAttach()
	 */
	protected final void onAttach()
	{
		// TODO after the constructor change we can do this in the constructor
		// of either this class or the button form
		getForm().setDefaultButton(this);
	}
}