/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.myfaces.tobago.internal.taglib.component;
import org.apache.myfaces.tobago.apt.annotation.ExtensionTag;
import org.apache.myfaces.tobago.apt.annotation.Tag;
import org.apache.myfaces.tobago.apt.annotation.TagAttribute;
import org.apache.myfaces.tobago.apt.annotation.UIComponentTagAttribute;
import org.apache.myfaces.tobago.internal.taglib.ButtonTag;
import javax.el.ValueExpression;
import javax.faces.context.FacesContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.BodyTagSupport;
@Tag(name = "wizardPrevious")
@ExtensionTag(baseClassName = "org.apache.myfaces.tobago.internal.taglib.component.WizardPreviousTag")
public class WizardPreviousTag extends BodyTagSupport {
private ValueExpression wizard;
private ValueExpression label;
@Override
public int doStartTag() throws JspException {
int result = super.doStartTag();
ButtonTag button = new ButtonTag();
button.setPageContext(pageContext);
button.setParent(getParent());
button.setLabel(label == null ? createStringValueExpression("Previous") : label); // todo: i18n
//todo button.setAction("#{" + wizard + ".previous}");
//todo button.setDisabled("#{!" + wizard + ".previousAvailable}");
button.doStartTag();
button.doEndTag();
return result;
}
protected ValueExpression createStringValueExpression(String expression) {
return FacesContext.getCurrentInstance().getApplication().getExpressionFactory().
createValueExpression(FacesContext.getCurrentInstance().getELContext(), expression, String.class);
}
@Override
public void release() {
super.release();
wizard = null;
label = null;
}
@TagAttribute(required = true)
@UIComponentTagAttribute
public void setWizard(ValueExpression wizard) {
this.wizard = wizard;
}
@TagAttribute
@UIComponentTagAttribute
public void setLabel(ValueExpression label) {
this.label = label;
}
}