package com.sun.facelets.tag.jsf.core;
import java.io.IOException;
import java.io.Serializable;
import javax.el.ELContext;
import javax.el.ELException;
import javax.el.ValueExpression;
import javax.faces.FacesException;
import javax.faces.component.ActionSource;
import javax.faces.component.ActionSource2;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.el.ValueBinding;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;
import com.sun.facelets.FaceletContext;
import com.sun.facelets.FaceletException;
import com.sun.facelets.el.LegacyValueBinding;
import com.sun.facelets.tag.TagAttribute;
import com.sun.facelets.tag.TagConfig;
import com.sun.facelets.tag.TagException;
import com.sun.facelets.tag.TagHandler;
import com.sun.facelets.tag.jsf.ComponentSupport;
import com.sun.facelets.util.FacesAPI;
public class SetPropertyActionListenerHandler extends TagHandler {
private final TagAttribute value;
private final TagAttribute target;
public SetPropertyActionListenerHandler(TagConfig config) {
super(config);
this.value = this.getRequiredAttribute("value");
this.target = this.getRequiredAttribute("target");
}
public void apply(FaceletContext ctx, UIComponent parent)
throws IOException, FacesException, FaceletException, ELException {
if (parent instanceof ActionSource) {
ActionSource src = (ActionSource) parent;
if (ComponentSupport.isNew(parent)) {
ValueExpression valueExpr = this.value.getValueExpression(ctx,
Object.class);
ValueExpression targetExpr = this.target.getValueExpression(
ctx, Object.class);
ActionListener listener;
if (FacesAPI.getVersion() >= 12 && src instanceof ActionSource2) {
listener = new SetPropertyListener(valueExpr, targetExpr);
} else {
listener = new LegacySetPropertyListener(
new LegacyValueBinding(valueExpr),
new LegacyValueBinding(targetExpr));
}
src.addActionListener(listener);
}
} else {
throw new TagException(this.tag,
"Parent is not of type ActionSource, type is: " + parent);
}
}
private static class LegacySetPropertyListener implements ActionListener,
Serializable {
private ValueBinding value;
private ValueBinding target;
public LegacySetPropertyListener() {
};
public LegacySetPropertyListener(ValueBinding value, ValueBinding target) {
this.value = value;
this.target = target;
}
public void processAction(ActionEvent evt)
throws AbortProcessingException {
FacesContext faces = FacesContext.getCurrentInstance();
Object valueObj = this.value.getValue(faces);
this.target.setValue(faces, valueObj);
}
}
private static class SetPropertyListener implements ActionListener,
Serializable {
private ValueExpression value;
private ValueExpression target;
public SetPropertyListener() {
};
public SetPropertyListener(ValueExpression value, ValueExpression target) {
this.value = value;
this.target = target;
}
public void processAction(ActionEvent evt)
throws AbortProcessingException {
FacesContext faces = FacesContext.getCurrentInstance();
ELContext el = faces.getELContext();
Object valueObj = this.value.getValue(el);
this.target.setValue(el, valueObj);
}
}
}