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package com.sun.faces.facelets.tag.composite;
import com.sun.faces.util.Util;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.component.UINamingContainer;
import javax.faces.context.FacesContext;
import javax.faces.view.AttachedObjectTarget;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class AttachedObjectTargetImpl implements AttachedObjectTarget {
private String name = null;
@Override
public String getName() {
return name;
}
void setName(String name) {
this.name = name;
}
@Override
public List<UIComponent> getTargets(UIComponent topLevelComponent) {
assert(null != name);
List<UIComponent> result;
FacesContext ctx = FacesContext.getCurrentInstance();
if (null != targetsList) {
String targetsListStr = (String) targetsList.getValue(ctx.getELContext());
Map<String, Object> appMap = FacesContext.getCurrentInstance().getExternalContext().getApplicationMap();
String[] targetArray = Util.split(appMap, targetsListStr, " ");
result = new ArrayList<>(targetArray.length);
for (int i = 0, len = targetArray.length; i < len; i++) {
UIComponent comp = topLevelComponent.findComponent(
augmentSearchId(ctx, topLevelComponent, targetArray[i]));
if (null != comp) {
result.add(comp);
}
}
}
else {
result = new ArrayList<>(1);
UIComponent comp = topLevelComponent.findComponent(
augmentSearchId(ctx, topLevelComponent, name));
if (null != comp) {
result.add(comp);
}
}
return result;
}
private ValueExpression targetsList;
void setTargetsList(ValueExpression targetsList) {
this.targetsList = targetsList;
}
// if the current composite component ID is the same as the target ID,
// we'll need to make the ID passed to findComponent be a combination
// of the two so we find the correct component. If we don't do this,
// we end with a StackOverFlowException as 'c' will be what is found
// and not the child of 'c'.
private String augmentSearchId(FacesContext ctx,
UIComponent c,
String targetId) {
if (targetId.equals(c.getId())) {
return targetId + UINamingContainer.getSeparatorChar(ctx) + targetId;
}
return targetId;
}
}