/**
*
*/
package org.richfaces.renderkit.html;
import java.io.IOException;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.renderkit.HeaderResourcesRendererBase;
import org.ajax4jsf.renderkit.RendererBase;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
import org.richfaces.component.LayoutPosition;
import org.richfaces.component.LayoutStructure;
import org.richfaces.component.UILayout;
import org.richfaces.component.UILayoutPanel;
/**
* @author asmirnov
*
*/
public class LayoutRenderer extends
RendererBase {
public static final String LAYOUT_STRUCTURE_ATTRIBUTE = UILayout.class.getName()+".structure";
private static final Object[] LAYOUT_EXCLUSIONS = {HTML.id_ATTRIBUTE,HTML.style_ATTRIBUTE};
@Override
protected void doEncodeBegin(ResponseWriter writer, FacesContext context,
UIComponent component) throws IOException {
writer.startElement(HTML.DIV_ELEM, component);
getUtils().encodeCustomId(context, component);
getUtils().encodePassThruWithExclusionsArray(context, component, LAYOUT_EXCLUSIONS);
Object style = component.getAttributes().get("style");
writer.writeAttribute(HTML.style_ATTRIBUTE,null==style?"":(style.toString()+";")+"zoom:1;","style");
}
@Override
protected void doEncodeChildren(ResponseWriter writer,
FacesContext context, UIComponent component) throws IOException {
renderLayout(writer,context, (UILayout) component);
}
public void renderLayout(ResponseWriter writer,FacesContext context, UILayout layout)
throws IOException {
LayoutStructure structure = new LayoutStructure(layout);
structure.calculateWidth();
Map<String, Object> requestMap = context.getExternalContext().getRequestMap();
Object oldLayout = requestMap.get(LAYOUT_STRUCTURE_ATTRIBUTE);
requestMap.put(LAYOUT_STRUCTURE_ATTRIBUTE, structure);
// Detect layout content;
if (null != structure.getTop()) {
structure.getTop().encodeAll(context);
}
if (structure.getColumns() > 0) {
// Reorder panels to fill ordeg left->center->right.
if (null != structure.getLeft()) {
structure.getLeft().encodeAll(context);
}
if (null != structure.getCenter()) {
structure.getCenter().encodeAll(context);
}
if (null != structure.getRight()) {
structure.getRight().encodeAll(context);
}
}
// line separator.
writer.startElement(HTML.DIV_ELEM, layout);
writer.writeAttribute(HTML.style_ATTRIBUTE, "display: block; height: 0;line-height:0px; font-size:0px; clear: both; visibility: hidden;", null);
writer.writeText(".", null);
writer.endElement(HTML.DIV_ELEM);
if (null != structure.getBottom()) {
renderChild(context, structure.getBottom());
}
requestMap.put(LAYOUT_STRUCTURE_ATTRIBUTE, oldLayout);
}
@Override
protected void doEncodeEnd(ResponseWriter writer, FacesContext context,
UIComponent component) throws IOException {
writer.endElement(HTML.DIV_ELEM);
}
@Override
public boolean getRendersChildren() {
return true;
}
@Override
protected Class<? extends UIComponent> getComponentClass() {
return UILayout.class;
}
}