htmltablerendererbase.java

一个使用struts+hibernate+spring开发的完的网站源代码。

            writer.startElement(elemName, component);
            if (header)
            {
                String headerStyleClass = getHeaderClass(component);
                if (facet != null)
                    renderTableHeaderRow(facesContext, writer, component, facet, headerStyleClass, colspan);
                if (hasColumnFacet)
                    renderColumnHeaderRow(facesContext, writer, component, headerStyleClass);
            }
            else
            {
                String footerStyleClass = getFooterClass(component);
                if (hasColumnFacet)
                    renderColumnFooterRow(facesContext, writer, component, footerStyleClass);
                if (facet != null)
                    renderTableFooterRow(facesContext, writer, component, facet, footerStyleClass, colspan);
            }
            writer.endElement(elemName);
        }
    }

	/**
	 * Renders the header row of the table being rendered.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param component the <code>UIComponent</code> for whom a table is being rendered.
	 * @param headerFacet the facet for the header.
	 * @param headerStyleClass the styleClass of the header.
	 * @param colspan the number of columns the header should span.  Typically, this is
	 * the number of columns in the table.
	 * @throws IOException if an exception occurs.
	 */
    protected void renderTableHeaderRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
            UIComponent headerFacet, String headerStyleClass, int colspan) throws IOException
    {
        renderTableHeaderOrFooterRow(facesContext, writer, component, headerFacet, headerStyleClass, HTML.TH_ELEM,
                colspan);
    }

	/**
	 * Renders the footer row of the table being rendered.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param component the <code>UIComponent</code> for whom a table is being rendered.
	 * @param footerFacet the facet for the footer.
	 * @param footerStyleClass the styleClass of the footer.
	 * @param colspan the number of columns the header should span.  Typically, this is
	 * the number of columns in the table.
	 * @throws IOException if an exception occurs.
	 */
    protected void renderTableFooterRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
            UIComponent footerFacet, String footerStyleClass, int colspan) throws IOException
    {
        renderTableHeaderOrFooterRow(facesContext, writer, component, footerFacet, footerStyleClass, HTML.TD_ELEM,
                colspan);
    }

	/**
	 * Renders the header row for the columns, which is a separate row from the header row for the
	 * <code>UIData</code> header facet.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param component the <code>UIComponent</code> for whom a table is being rendered.
	 * @param headerStyleClass the styleClass of the header 
	 * @throws IOException if an exception occurs.
	 */
    protected void renderColumnHeaderRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
            String headerStyleClass) throws IOException
    {
        renderColumnHeaderOrFooterRow(facesContext, writer, component, headerStyleClass, true);
    }

	/**
	 * Renders the footer row for the columns, which is a separate row from the footer row for the
	 * <code>UIData</code> footer facet.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param component the <code>UIComponent</code> for whom a table is being rendered.
	 * @param footerStyleClass the styleClass of the footerStyleClass 
	 * @throws IOException if an exception occurs.
	 */
    protected void renderColumnFooterRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
            String footerStyleClass) throws IOException
    {
        renderColumnHeaderOrFooterRow(facesContext, writer, component, footerStyleClass, false);
    }

    private void renderTableHeaderOrFooterRow(FacesContext facesContext, ResponseWriter writer, UIComponent component,
            UIComponent facet, String styleClass, String colElementName, int colspan) throws IOException
    {
        HtmlRendererUtils.writePrettyLineSeparator(facesContext);
        writer.startElement(HTML.TR_ELEM, component);
        writer.startElement(colElementName, component);
        if (colElementName.equals(HTML.TH_ELEM))
        {
            writer.writeAttribute(HTML.SCOPE_ATTR, HTML.SCOPE_COLGROUP_VALUE, null);
        }
        writer.writeAttribute(HTML.COLSPAN_ATTR, new Integer(colspan), null);
        if (styleClass != null)
        {
            writer.writeAttribute(HTML.CLASS_ATTR, styleClass, null);
        }
        if (facet != null)
        {
            RendererUtils.renderChild(facesContext, facet);
        }
        writer.endElement(colElementName);
        writer.endElement(HTML.TR_ELEM);
    }

    private void renderColumnHeaderOrFooterRow(FacesContext facesContext, ResponseWriter writer, 
            UIComponent component, String styleClass, boolean header) throws IOException
    {
        HtmlRendererUtils.writePrettyLineSeparator(facesContext);

        writer.startElement(HTML.TR_ELEM, component);
        for (Iterator it = component.getChildren().iterator(); it.hasNext();)
        {
            UIComponent uiComponent = (UIComponent) it.next();
            if(uiComponent.isRendered())
            {
              if (uiComponent instanceof UIColumn)
              {
                  if (header)
                  {
                      renderColumnHeaderCell(facesContext, writer, uiComponent, 
                          ((UIColumn) uiComponent).getHeader(), styleClass, 0);
                  }
                  else
                  {
                      renderColumnFooterCell(facesContext, writer, uiComponent, 
                          ((UIColumn) uiComponent).getFooter(), styleClass, 0);
                  }
              }
              else if (uiComponent instanceof UIColumns)
              {
                  UIColumns columns = (UIColumns) uiComponent;
                  for (int i = 0, size = columns.getRowCount(); i < size; i++)
                  {
                      columns.setRowIndex(i);
                      if (header)
                      {
                          renderColumnHeaderCell(facesContext, writer, columns, columns.getHeader(),
                              styleClass, 0);
                      }
                      else
                      {
                          renderColumnFooterCell(facesContext, writer, columns, columns.getFooter(),
                              styleClass, 0);
                      }
                  }
                  columns.setRowIndex(-1);
              }
            }
        }
        writer.endElement(HTML.TR_ELEM);
    }

    /**
     * Renders the header facet for the given <code>UIColumn</code>.
     * @param facesContext the <code>FacesContext</code>.
     * @param writer the <code>ResponseWriter</code>.
     * @param uiColumn the <code>UIColumn</code>.
     * @param headerStyleClass the styleClass of the header facet.
     * @param colspan the colspan for the tableData element in which the header facet
     * will be wrapped.
     * @throws IOException
     */
    protected void renderColumnHeaderCell(FacesContext facesContext, ResponseWriter writer, UIColumn uiColumn, 
            String headerStyleClass, int colspan) throws IOException
    {
      renderColumnHeaderCell(facesContext, writer, uiColumn, uiColumn.getHeader(), headerStyleClass, colspan);
    }

    /**
	 * Renders the header facet for the given <code>UIColumn</code>.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param uiComponent the <code>UIComponent</code> to render the facet for.
     * @param facet the <code>UIComponent</code> to render as facet.
	 * @param headerStyleClass the styleClass of the header facet.
	 * @param colspan the colspan for the tableData element in which the header facet
	 * will be wrapped.
	 * @throws IOException
	 */
    protected void renderColumnHeaderCell(FacesContext facesContext, ResponseWriter writer, UIComponent uiComponent, 
            UIComponent facet, String headerStyleClass, int colspan) throws IOException
    {
        writer.startElement(HTML.TH_ELEM, uiComponent);
        if (colspan > 1)
        {
            writer.writeAttribute(HTML.COLSPAN_ATTR, new Integer(colspan), null);
        }
        if (headerStyleClass != null)
        {
            writer.writeAttribute(HTML.CLASS_ATTR, headerStyleClass, null);
        }
        if (facet != null)
        {
            RendererUtils.renderChild(facesContext, facet);
        }
        writer.endElement(HTML.TH_ELEM);
    }

    /**
     * Renders the footer facet for the given <code>UIColumn</code>.
     * @param facesContext the <code>FacesContext</code>.
     * @param writer the <code>ResponseWriter</code>.
     * @param uiColumn the <code>UIComponent</code>.
     * @param footerStyleClass the styleClass of the footer facet.
     * @param colspan the colspan for the tableData element in which the footer facet
     * will be wrapped.
     * @throws IOException
     */
    protected void renderColumnFooterCell(FacesContext facesContext, ResponseWriter writer, UIColumn uiColumn, 
        String footerStyleClass, int colspan) throws IOException
    {      
      renderColumnFooterCell(facesContext, writer, uiColumn, uiColumn.getFooter(), footerStyleClass, colspan);
    }
    
	/**
	 * Renders the footer facet for the given <code>UIColumn</code>.
	 * @param facesContext the <code>FacesContext</code>.
	 * @param writer the <code>ResponseWriter</code>.
	 * @param uiComponent the <code>UIComponent</code> to render the facet for.
     * @param facet the <code>UIComponent</code> to render as facet.
	 * @param footerStyleClass the styleClass of the footer facet.
	 * @param colspan the colspan for the tableData element in which the footer facet
	 * will be wrapped.
	 * @throws IOException
	 */
    protected void renderColumnFooterCell(FacesContext facesContext, ResponseWriter writer, UIComponent uiComponent, 
        UIComponent facet, String footerStyleClass, int colspan) throws IOException
    {
        writer.startElement(HTML.TD_ELEM, uiComponent);
        if (colspan > 1)
        {
            writer.writeAttribute(HTML.COLSPAN_ATTR, new Integer(colspan), null);
        }
        if (footerStyleClass != null)
        {
            writer.writeAttribute(HTML.CLASS_ATTR, footerStyleClass, null);
        }
        if (facet != null)
        {
            RendererUtils.renderChild(facesContext, facet);
        }
        writer.endElement(HTML.TD_ELEM);
    }

	/**
	 * Gets the headerClass attribute of the given <code>UIComponent</code>.
	 * @param component the <code>UIComponent</code>.
	 * @return the headerClass attribute of the given <code>UIComponent</code>.
	 */
    protected static String getHeaderClass(UIComponent component)
    {
        if (component instanceof HtmlDataTable)
        {
            return ((HtmlDataTable) component).getHeaderClass();
        }
        else
        {
            return (String) component.getAttributes().get(JSFAttr.HEADER_CLASS_ATTR);
        }
    }

	/**
	 * Gets the footerClass attribute of the given <code>UIComponent</code>.
	 * @param component the <code>UIComponent</code>.
	 * @return the footerClass attribute of the given <code>UIComponent</code>.
	 */
    protected static String getFooterClass(UIComponent component)
    {
        if (component instanceof HtmlDataTable)
        {
            return ((HtmlDataTable) component).getFooterClass();
        }
        else
        {
            return (String) component.getAttributes().get(JSFAttr.FOOTER_CLASS_ATTR);
        }
    }

    //-------------------------------------------------------------
    // Helper class Styles
    //-------------------------------------------------------------
    private static class Styles
    {
        //~ Instance fields
        // ------------------------------------------------------------------------

        private String[] _columnStyle;

        private String[] _rowStyle;

        //~ Constructors
        // ---------------------------------------------------------------------------
        Styles(String rowStyles, String columnStyles)
        {
            _rowStyle = (rowStyles == null) ? ArrayUtils.EMPTY_STRING_ARRAY : StringUtils.trim(StringUtils
                    .splitShortString(rowStyles, ','));
            _columnStyle = (columnStyles == null) ? ArrayUtils.EMPTY_STRING_ARRAY : StringUtils.trim(StringUtils
                    .splitShortString(columnStyles, ','));
        }

        public String getRowStyle(int idx)
        {
            if (!hasRowStyle())
            {
                return null;
            }
            return _rowStyle[idx % _rowStyle.length];
        }

        public String getColumnStyle(int idx)
        {
            if (!hasColumnStyle())
            {
                return null;
            }
            return _columnStyle[idx % _columnStyle.length];
        }

        public boolean hasRowStyle()
        {
            return _rowStyle.length > 0;
        }

        public boolean hasColumnStyle()
        {
            return _columnStyle.length > 0;
        }

    }

    public void decode(FacesContext context, UIComponent component)
    {
        super.decode(context, component);
    }

}