org.zkoss.zul
Interface RowRendererExt


public interface RowRendererExt

Provides additional control to RowRenderer.

Author:
tomyeh

Field Summary
static int DETACH_ON_RENDER
          Returned by getControls() to indicate that the list cells added by newCell(org.zkoss.zul.Row) must be detached before calling RowRenderer.render(org.zkoss.zul.Row, java.lang.Object).
 
Method Summary
 int getControls()
          Returns how a grid shall render the live data.
 Component newCell(Row row)
          Create a component as the first cell of the row.
 Row newRow(Grid grid)
          Creates an instance of Row for rendering.
 

Field Detail

DETACH_ON_RENDER

static final int DETACH_ON_RENDER
Returned by getControls() to indicate that the list cells added by newCell(org.zkoss.zul.Row) must be detached before calling RowRenderer.render(org.zkoss.zul.Row, java.lang.Object).

Default: true.
If this interface is not specified, this flag is assumed to be specified.

If you don't specify this flag, the implementation of RowRenderer.render(org.zkoss.zul.Row, java.lang.Object) must be aware of the existence of the first cell (of the passed row).

See Also:
Constant Field Values
Method Detail

newRow

Row newRow(Grid grid)
Creates an instance of Row for rendering. The created component will be passed to RowRenderer.render(org.zkoss.zul.Row, java.lang.Object).

Note: remember to invoke AbstractComponent.applyProperties() to initialize the properties, defined in the component definition, properly.

If null is returned, the default row is created as follow.


final Row row = new Row();
row.applyProperties();
return row;

Note: DO NOT call AbstractComponent.setParent(org.zkoss.zk.ui.Component).

Returns:
the row if you'd like to create it differently, or null if you want Grid to create it for you

newCell

Component newCell(Row row)
Create a component as the first cell of the row.

Note: remember to invoke Component.applyProperties() to initialize the properties, defined in the component definition, properly, if you create an instance instead of returning null.

Note: DO NOT call AbstractComponent.setParent(org.zkoss.zk.ui.Component).

If null is returned, the default cell is created as follow.


final Label cell = new Label();
cell.applyProperties();
return cell;

Note: DO NOT call Component.setParent(org.zkoss.zk.ui.Component). Don't create cells for other columns.

Parameters:
row - the row. It is the same as that is returned by newRow(org.zkoss.zul.Grid)
Returns:
the cell if you'd like to create it differently, or null if you want Grid to create it for you

getControls

int getControls()
Returns how a grid shall render the live data.

Note: if this interface is not implemented, DETACH_ON_RENDER is assumed.

Returns:
a combination of DETACH_ON_RENDER or 0 to indicate how to render the live data.


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