com.bea.netuix.servlets.controls.layout
Class GridLayoutPresentationContext

java.lang.Object
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  +--com.bea.netuix.servlets.controls.ControlContext
        |
        +--com.bea.netuix.servlets.controls.PresentationContext
              |
              +--com.bea.netuix.servlets.controls.layout.LayoutPresentationContext
                    |
                    +--com.bea.netuix.servlets.controls.layout.GridLayoutPresentationContext

All Implemented Interfaces:

Serializable

public class GridLayoutPresentationContext

extends LayoutPresentationContext

See Also:

Serialized Form

Field Summary

static int

DEFAULT_GRID_COLUMNS

Fields inherited from class com.bea.netuix.servlets.controls.ControlContext

debug

Constructor Summary

protected

GridLayoutPresentationContext(Layout layout)

Method Summary

int	getColumns()
static GridLayoutPresentationContext	getGridLayoutPresentationContext(HttpServletRequest request)
PlaceholderPresentationContext[][]	getPlaceholderGrid() This method arranges the placeholder context children of this layout into an n-by-m grid, ready for rendering.
int	getRows()
boolean	isRowMajor()

Methods inherited from class com.bea.netuix.servlets.controls.layout.LayoutPresentationContext

getLayoutPresentationContext, getType

Methods inherited from class com.bea.netuix.servlets.controls.PresentationContext

getChildren, getChildren, getControlState, getFirstChild, getParsedProperties, getPresentationClass, getPresentationId, getPresentationStyle, getProperties, getProperty, getProperty, getPropertyAsBoolean, getPropertyAsInt, getResolvedLocale, getTagName, isVisible, render, setVisible

Methods inherited from class com.bea.netuix.servlets.controls.ControlContext

getContextFromRequest, getContextKey, getControl, getRequestKey, getUniqueId, removeContextFromRequest, setContextInRequest

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_GRID_COLUMNS

public static final int DEFAULT_GRID_COLUMNS

See Also:

Constant Field Values

Constructor Detail

GridLayoutPresentationContext

protected GridLayoutPresentationContext(Layout layout)

Method Detail

getColumns

public int getColumns()

getRows

public int getRows()

isRowMajor

public boolean isRowMajor()

getPlaceholderGrid

public PlaceholderPresentationContext[][] getPlaceholderGrid()

This method arranges the placeholder context children of this layout into an n-by-m grid, ready for rendering.

The grid layout logic is as follows:

• First, the "columns" property is checked. If it exists and is greater than zero in value, then a row-major approach is used for rendering placeholders. That is, placement of placeholder content proceeds left to right, starting a new row every time the "columns" value is reached.
• If the "columns" property is found to either not exist or be less than or equal to zero, then the "rows" property is checked. If it's value exists and is greater than zero, then a column-major approach is used for rendering placeholders. That is, placement of placeholder content proceeds top to bottom, starting a new column every time the "rows" value is reached.
• If neither rows nor columns has a value specified, then the grid layout uses a hardcoded default fill strategy. This strategy is a row-major approach using the default "columns" value of "3".
• Lastly, if the last column or row to be assigned placeholders cannot be completely filled due to insufficient remaining placeholders, the column or row is filled to the end with empty cells.

getGridLayoutPresentationContext

public static GridLayoutPresentationContext getGridLayoutPresentationContext(HttpServletRequest request)