The immediate children of a Table component must all be <tr:column> components. Each visible Trinidad Column component creates a separate column in the Table.
Use the "header" facet on a Column to create the column header. The following example creates a two-column table with the column headers - "Firstname" and "Lastname":
... ...
The child components of each Column display the data for each row in that column. The Column does not create child components per row; instead, each child is repeatedly rendered (stamped) once per row. Because of this stamping behavior, only certain types of components are supported as children inside a Column. Supported components include all components with no behavior and most components that implement the EditableValueHolder or ActionSource interfaces.
As each row is stamped, the data for the current row ( see getRowData() on the Table) is copied into an EL reachable property. The name of this property is defined by the var property on the Table. Once the Table has completed rendering, this property is removed (or reverted back to its previous value). In the following example, the data for each row is placed under the EL property "row". Each Column displays the data for each row by getting further properties from the "row" property:
tr:outputText value="#{row.lastname}"/>
The Column component supports the following attributes related to formatting:
- align
- The type of alignment to use for this column. This atribute controls left/start, right/end, or center justification of the column data.
- width
- The width of this column.
- noWrap
- Controls whether long lines of text in the column data should be wrapped.
- headerNoWrap
- Controls whether long lines of text in the column header should be wrapped.
- separateRows
- Controls whether each child of this column should be rendered in separate cells, or inside the same cell.
In order to make this Column sortable, set the "sortable" property to true and set "sortProperty" to the name of the model that this column will sort. Sorting can be programatically turned on with the setSortCritiera() method on the\ table.
<tr:column> tags can be nested to produce groups of columns. The header of a column group spans across all the columns it contains. The following example creates a column group that has the header "Name" and contains two sub columns with headers "First" and "Last":
tr:outputText value="#{row.lastname}"/>
Events:
| Type | Phases | Description |
org.apache.myfaces.trinidad.event.AttributeChangeEvent | Apply Request Values | Event delivered to describe an attribute change. Attribute change events are not delivered for any programmatic change to a property. They are only delivered when a renderer changes a property without the application's specific request. An example of an attribute change events might include the width of a column that supported client-side resizing. |