edu.nrao.sss.webapp.faces.renderer
Class TableRenderer

java.lang.Object
  javax.faces.render.Renderer
      org.apache.myfaces.shared_impl.renderkit.html.HtmlRenderer
          org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase
              org.apache.myfaces.renderkit.html.HtmlTableRenderer
                  edu.nrao.sss.webapp.faces.renderer.TableRenderer

public class TableRenderer
extends org.apache.myfaces.renderkit.html.HtmlTableRenderer

This class extends Apache MyFace's HtmlTableRenderer to add the ability to render a colspan attribute on UIColumn's. An example usage would be to conditionally assign a colspan value to a UIColumn tag so that some rows of that column span multiple columns, and some don't. Important to note that the columns that the span will be encompassing need to be not rendered under the same conditions.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.Styles

Field Summary

protected static String	colspanAttr
protected static String	styleClassAttr

Fields inherited from class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

FOOTER_FACET_NAME, HEADER_FACET_NAME

Constructor Summary

TableRenderer()

Method Summary

protected void	beforeBody(FacesContext facesContext, UIData uiData) This is rediculous.
protected int	getColspan(UIComponent column, FacesContext ctx)
protected String	getStyleClass(UIComponent column, FacesContext ctx)
protected void	renderColumnBody(FacesContext facesContext, ResponseWriter writer, UIData uiData, UIComponent component, org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.Styles styles, int columnStyleIndex) Overrides the renderColumnBody method of HtmlTableRenderer to add rendering of a colspan attribute when necessary.
protected void	renderColumnHeaderCell(FacesContext facesContext, ResponseWriter writer, UIComponent uiComponent, UIComponent facet, String headerStyleClass, int colspan) Overrides the renderColumnHeaderCell method of HtmlTableRenderer to use the colspan attribute specified in the column tag.

Methods inherited from class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

afterBody, afterColumn, afterColumnHeaderOrFooter, afterRow, afterTable, beforeColumn, beforeColumnHeaderOrFooter, beforeRow, beforeTable, decode, determineChildColSpan, encodeBegin, encodeChildren, encodeColumnChild, encodeEnd, encodeInnerHtml, getFooterClass, getHeaderClass, getNewspaperColumns, getNewspaperTableSpacer, getRendersChildren, getStyles, hasFacet, hasNewspaperTableSpacer, inBodyStart, isNewspaperHorizontalOrientation, renderColumnChildHeaderOrFooterRow, renderColumnFooterCell, renderColumnFooterCell, renderColumnFooterRow, renderColumnHeaderCell, renderColumnHeaderRow, renderFacet, renderRowEnd, renderRowStart, renderRowStyle, renderSpacerCell, renderTableFooterRow, renderTableHeaderRow

Methods inherited from class org.apache.myfaces.shared_impl.renderkit.html.HtmlRenderer

getActionUrl, getChildCount, getChildren, getClientId, renderId, shouldRenderId, toUri

Methods inherited from class javax.faces.render.Renderer

convertClientId, getConvertedValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

colspanAttr

protected static final String colspanAttr

See Also:

Constant Field Values

styleClassAttr

protected static final String styleClassAttr

See Also:

Constant Field Values

Constructor Detail

TableRenderer

public TableRenderer()

Method Detail

renderColumnBody

protected void renderColumnBody(FacesContext facesContext,
                                ResponseWriter writer,
                                UIData uiData,
                                UIComponent component,
                                org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase.Styles styles,
                                int columnStyleIndex)
                         throws IOException

Overrides the renderColumnBody method of HtmlTableRenderer to add rendering of a colspan attribute when necessary.

Overrides:

renderColumnBody in class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

Throws:

IOException

renderColumnHeaderCell

protected void renderColumnHeaderCell(FacesContext facesContext,
                                      ResponseWriter writer,
                                      UIComponent uiComponent,
                                      UIComponent facet,
                                      String headerStyleClass,
                                      int colspan)
                               throws IOException

Overrides the renderColumnHeaderCell method of HtmlTableRenderer to use the colspan attribute specified in the column tag.

Overrides:

renderColumnHeaderCell in class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

Throws:

IOException

beforeBody

protected void beforeBody(FacesContext facesContext,
                          UIData uiData)
                   throws IOException

This is rediculous. I have to override this method to call uiData.setRowIndex(0) before the headers are rendered so that the rendered flag of the child UIColumn objects is correctly set. This step isn't done until we are rendering the body normally. I'm not sure what the ramifications of doing this early are. It gets reset once body rendering starts anyway, so hopefully there are none.

Overrides:

beforeBody in class org.apache.myfaces.shared_impl.renderkit.html.HtmlTableRendererBase

Throws:

IOException

getColspan

protected int getColspan(UIComponent column,
                         FacesContext ctx)

getStyleClass

protected String getStyleClass(UIComponent column,
                               FacesContext ctx)