/**
* This method converts an XML element into a specific kind of widget. Special cases are the XML
* widget, Header, @Require widget. Otherwise a standard widget is created.
*/
@SuppressWarnings({"JavaDoc"})
@NotNull
private <N extends Node> Renderable widgetize(
PageCompilingContext pc, N node, WidgetChain childsChildren) {
if (node instanceof XmlDeclaration) {
try {
XmlDeclaration decl = (XmlDeclaration) node;
return registry.xmlDirectiveWidget(decl.getWholeDeclaration(), pc.lexicalScopes.peek());
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
}
}
// Header widget is a special case, where we match by the name of the tag =(
if ("head".equals(node.nodeName())) {
try {
return registry.headWidget(
childsChildren, parseAttribs(node.attributes()), pc.lexicalScopes.peek());
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
}
}
String annotation = node.attr(ANNOTATION);
// if there is no annotation, treat as a raw xml-widget (i.e. tag)
if ((null == annotation) || 0 == annotation.trim().length())
try {
checkUriConsistency(pc, node);
checkFormFields(pc, node);
return registry.xmlWidget(
childsChildren,
node.nodeName(),
parseAttribs(node.attributes()),
pc.lexicalScopes.peek());
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
return Chains.terminal();
}
// Special case: is this annotated with @Require
// if so, tags in head need to be promoted to head of enclosing page.
if (REQUIRE_WIDGET.equalsIgnoreCase(annotation.trim()))
try {
return registry.requireWidget(
registry.xmlWidget(
childsChildren,
node.nodeName(),
parseAttribs(node.attributes()),
pc.lexicalScopes.peek()));
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
return Chains.terminal();
}
// If this is NOT a self-rendering widget, give it a child.
// final String widgetName = node.attr(ANNOTATION_KEY).trim().toLowerCase());
final String widgetName = node.attr(ANNOTATION_KEY).toLowerCase();
if (!registry.isSelfRendering(widgetName))
try {
childsChildren =
Chains.singleton(
registry.xmlWidget(
childsChildren,
node.nodeName(),
parseAttribs(node.attributes()),
pc.lexicalScopes.peek()));
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
}
// Recursively build widget from [Key, expression, child widgets].
try {
return registry.newWidget(
widgetName, node.attr(ANNOTATION_CONTENT), childsChildren, pc.lexicalScopes.peek());
} catch (ExpressionCompileException e) {
pc.errors.add(CompileError.in(node.outerHtml()).near(line(node)).causedBy(e));
// This should never be used.
return Chains.terminal();
}
}
