package client.net.sf.saxon.ce.style;
import client.net.sf.saxon.ce.expr.Expression;
import client.net.sf.saxon.ce.expr.instruct.Executable;
import client.net.sf.saxon.ce.om.AttributeCollection;
import client.net.sf.saxon.ce.trans.XPathException;
/**
* xsl:fallback element in stylesheet. <br>
*/
public class XSLFallback extends StyleElement {
/**
* Determine whether this node is an instruction.
* @return true - it is an instruction
*/
public boolean isInstruction() {
return true;
}
/**
* Determine whether this type of element is allowed to contain a template-body
* @return true: yes, it may contain a template-body
*/
public boolean mayContainSequenceConstructor() {
return true;
}
/**
* Ask whether variables declared in an "uncle" element are visible.
* @return true for all elements except xsl:fallback and saxon:catch
*/
protected boolean seesAvuncularVariables() {
return false;
}
public void prepareAttributes() throws XPathException {
AttributeCollection atts = getAttributeList();
for (int a=0; a<atts.getLength(); a++) {
int nc = atts.getNameCode(a);
checkUnknownAttribute(nc);
}
}
public void validate(Declaration decl) throws XPathException {
// Parent elements are now responsible for validating their children
// StyleElement parent = (StyleElement)getParent();
// if (!parent.mayContainFallback()) {
// compileError("xsl:fallback is not allowed as a child of " + parent.getDisplayName(), "XT0010");
// }
}
public Expression compile(Executable exec, Declaration decl) throws XPathException {
// if we get here, then the parent instruction is OK, so the fallback is not activated
return null;
}
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.