TabbedRendererpublic class TabbedRenderer extends javax.faces.render.Renderer | This class is a JSF Renderer for the "javax.faces.Panel"
component type. It renders a table with one row of cells
made up from the "label" facets on its children, assumed
to be "com.mycompany.TabLabel" components. |
| Methods Summary |
|---|
| public void | decode(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)Loops over all children and calls processDecodes() on the
child's "label" facet for all children with the "rendered"
property set to "false" (the one with "rendered" set to
"true" is decoded by the default processing).
// "rendered" false are not decoded by default, but the label
// facets must be
Iterator i = component.getChildren().iterator();
while (i.hasNext()) {
UIComponent child = (UIComponent) i.next();
if (!child.isRendered()) {
UITabLabel tabLabel = (UITabLabel) child.getFacet("label");
if (tabLabel != null) {
tabLabel.processDecodes(context);
}
}
}
| | public void | encodeBegin(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)Ensures that only one child has "rendered" set to "true",
renders an HTML table with one row and one cell per child
"label" facet, with a "class" attribute for the "table"
element set to the "labelAreaClass" component attribute
value, and one of "selectedLabelClass" or "unselectedLabelClass"
as the "class" attribute value for the "td" elements.
if (!component.isRendered()) {
return;
}
/*
* Figure out which tab is selected (the first one with
* "rendered" set to "true"), and ensure all others are
* unselected ("rendered" set to "false").
*/
int selected = 0;
List children = component.getChildren();
boolean pickedSelected = false;
for (int i = 0; i < children.size(); i++) {
UIComponent child = (UIComponent) children.get(i);
if (child.isRendered() && !pickedSelected) {
selected = i;
pickedSelected = true;
}
else {
child.setRendered(false);
}
}
// Render the tab labels as an HTML table with the appropriate
// CSS class
String labelAreaClass =
(String) component.getAttributes().get("labelAreaClass");
String selectedLabelClass =
(String) component.getAttributes().get("selectedLabelClass");
String unselectedLabelClass =
(String) component.getAttributes().get("unselectedLabelClass");
ResponseWriter out = context.getResponseWriter();
out.startElement("table", component);
if (component.getId() != null &&
!component.getId().startsWith(UIViewRoot.UNIQUE_ID_PREFIX)) {
out.writeAttribute("id", component.getClientId(context),
"id");
}
if (labelAreaClass != null) {
out.writeAttribute("class", labelAreaClass, "labelAreaClass");
}
out.startElement("tr", component);
for (int i = 0; i < children.size(); i++) {
UIComponent child = (UIComponent) children.get(i);
UITabLabel tabLabel = (UITabLabel) child.getFacet("label");
if (tabLabel != null) {
String styleClass = i == selected ?
selectedLabelClass : unselectedLabelClass;
out.startElement("td", component);
if (styleClass != null) {
out.writeAttribute("class", styleClass,
i == selected ?
"selectedLabelClass" : "unselectedLabelClass");
}
encodeRecursive(context, tabLabel);
out.endElement("td");
}
}
out.endElement("tr");
out.endElement("table");
| | public void | encodeChildren(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)Calls the appropriate encode methods for the child with
the "rendered" property set to "true".
Iterator i = component.getChildren().iterator();
while (i.hasNext()) {
UIComponent child = (UIComponent) i.next();
if (child.isRendered()) {
child.encodeBegin(context);
if (child.getRendersChildren()) {
child.encodeChildren(context);
}
child.encodeEnd(context);
}
}
| | private void | encodeRecursive(javax.faces.context.FacesContext context, javax.faces.component.UIComponent component)Calls the appropriate encoding methods on the component and
calls itself recursively for all component children.
if (!component.isRendered()) {
return;
}
component.encodeBegin(context);
if (component.getRendersChildren()) {
component.encodeChildren(context);
} else {
Iterator i = component.getChildren().iterator();
while (i.hasNext()) {
UIComponent child = (UIComponent) i.next();
encodeRecursive(context, child);
}
}
component.encodeEnd(context);
| | public boolean | getRendersChildren()Returns "true".
return true;
|
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