The component for row rendering for a UIData component.
Table 6.113. rich : column attributes
Attribute Name | Description |
---|---|
binding | The attribute takes a value-binding expression for a component property of a backing bean |
breakBefore | if "true" next column begins from the first row |
colspan | Corresponds to the HTML colspan attribute |
comparator | |
dir | Direction indication for text that does not inherit directionality. Valid values are "LTR" (left-to-right) and "RTL" (right-to-left) |
filterBy | |
filterDefaultLabel | |
filterEvent | Event for filter input that forces the filtration (default = onchange) |
filterExpression | Attribute defines a bean property which is used for filtering of a column |
filterMethod | |
filterValue | |
footerClass | Space-separated list of CSS style class(es) that are be applied to any footer generated for this table |
headerClass | Space-separated list of CSS style class(es) that are be applied to any header generated for this table |
id | Every component may have a unique id that is automatically created if omitted |
lang | Code describing the language used in the generated markup for this component |
rendered | If "false", this component is not rendered |
rowspan | Corresponds to the HTML rowspan attribute |
selfSorted | |
sortable | Boolean attribute. If "true" it's possible to sort the column content after click on the header. Default value is "true" |
sortBy | Attribute defines a bean property which is used for sorting of a column |
sortExpression | DEPRECATED(use sortBy)Attribute defines a bean property which is used for sorting of a column |
sortMode | sortMode |
sortOrder | SortOrder is an enumeration of the possible sort orderings. |
style | CSS style(s) is/are to be applied when this component is rendered |
styleClass | Corresponds to the HTML class attribute |
title | Advisory title information about markup elements generated for this component |
width | Attribute defines width of column. |
Table 6.114. Component identification parameters
Name | Value |
---|---|
component-type | org.richfaces.Column |
component-class | org.richfaces.component.html.HtmlColumn |
component-family | org.richfaces.Column |
renderer-type | org.richfaces.ColumnRenderer |
tag-class | org.richfaces.taglib.ColumnTag |
To create the simplest variant of column on a page, use the following syntax:
Example:
...
<rich:dataTable var="set">
<rich:column>
<h:outputText value="#{set.property1}"/>
</rich:column>
<!--Set of another columns and header/footer facets-->
</rich:dataTable>
...
Example:
import org.richfaces.component.html.HtmlColumn;
...
HtmlColumn myColumn = new HtmlColumn();
...
To output a simple table, the <rich:column> component is used the same way as the standard <h:column> , i.e. the following code on a page is used:
Example:
...
<rich:dataTable value="#{capitalsBean.capitals}" var="cap" rows="5">
<rich:column>
<f:facet name="header">State Flag</f:facet>
<h:graphicImage value="#{cap.stateFlag}"/>
</rich:column>
<rich:column>
<f:facet name="header">State Name</f:facet>
<h:outputText value="#{cap.state}"/>
</rich:column>
<rich:column >
<f:facet name="header">State Capital</f:facet>
<h:outputText value="#{cap.name}"/>
</rich:column>
<rich:column>
<f:facet name="header">Time Zone</f:facet>
<h:outputText value="#{cap.timeZone}"/>
</rich:column>
</rich:dataTable>
...
The result is:
Now, in order to group columns with text information into one row in one column with a flag, use the "colspan" attribute, which is similar to an HTML one, specifying that the first column contains 3 columns. In addition, it's necessary to specify that the next column begins from the first row with the help of the "breakBefore" attribute = true.
Example:
...
<rich:dataTable value="#{capitalsBean.capitals}" var="cap" rows="5">
<rich:column colspan="3">
<h:graphicImage value="#{cap.stateFlag}"/>
</rich:column>
<rich:column breakBefore="true">
<h:outputText value="#{cap.state}"/>
</rich:column>
<rich:column >
<h:outputText value="#{cap.name}"/>
</rich:column>
<rich:column>
<h:outputText value="#{cap.timeZone}"/>
</rich:column>
</rich:dataTable>
...
As a result the following structure is rendered:
The same way is used for columns grouping with the "rowspan" attribute that is similar to an HTML one responsible for rows quantity definition occupied with the current one. The only thing to add in the example is an instruction to move onto the next row for each next after the second column.
Example:
...
<rich:dataTable value="#{capitalsBean.capitals}" var="cap" rows="5">
<rich:column rowspan="3">
<f:facet name="header">State Flag</f:facet>
<h:graphicImage value="#{cap.stateFlag}"/>
</rich:column>
<rich:column>
<f:facet name="header">State Info</f:facet>
<h:outputText value="#{cap.state}"/>
</rich:column>
<rich:column breakBefore="true">
<h:outputText value="#{cap.name}"/>
</rich:column>
<rich:column breakBefore="true">
<h:outputText value="#{cap.timeZone}"/>
</rich:column>
</rich:dataTable>
...
As a result:
Hence, additionally to a standard output of a particular row provided with the <h:column> component, it becomes possible to group easily the rows with special HTML attribute.
The columns also could be grouped in a particular way with the help of the <h:columnGroup> component that is described in the following chapter.
For skinnability implementation, the components use a style class redefinition method. Default style classes are mapped on skin parameters.
There are two ways to redefine the appearance of all <rich:column> components at once:
Redefine the corresponding skin parameters
Add to your style sheets style classes used by a <rich:column> component
Skin parameters redefinition for <rich:column> are the same as for the <rich:dataTable> component.
Custom style classes for <rich:column> are the same as for the <rich:dataTable> component.
In order to redefine styles for all <rich:column> components on a page using CSS, it's enough to create classes with the same names and define necessary properties in them.
To change styles of particular <rich:column> components, define your own style classes in the corresponding <rich:column> attributes.
Here you can see the example of <rich:column> usage and sources for the given example.