org.gwt.advanced.client.ui.widget

Class HierarchicalGridRenderer

java.lang.Object

org.gwt.advanced.client.ui.widget.DefaultGridRenderer

org.gwt.advanced.client.ui.widget.HierarchicalGridRenderer

All Implemented Interfaces:

GridRenderer

public class HierarchicalGridRenderer
extends DefaultGridRenderer

This is an extension for hierarchical grid rendering.

It creates ExpandableCells if the grid model has submodels.

Since:

1.3.0

Author:

Sergey Skladchikov

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	HierarchicalGridRenderer.DisablingEventManager This handler enables / disables the event manager of this grid on subgrids activation.

Nested classes/interfaces inherited from class org.gwt.advanced.client.ui.widget.DefaultGridRenderer

DefaultGridRenderer.DrawRowCommand

Constructor Summary

Constructors

Constructor and Description
HierarchicalGridRenderer(EditableGrid grid) Creates an instance of this class and initializes the grid cell factory.

Method Summary

Methods

Modifier and Type	Method and Description
void	drawCell(Object data, int row, int column, boolean active) This method draws a particular cell.
void	drawColumn(Object[] data, int column, boolean overwrite) This method draws a column.
void	drawContent(GridDataModel model) This method renders grid content.
protected void	dropWrongSelection(int parentRow, int step) This method drops selection if the specified row is less then one one currently selected rows.
HierarchicalGridRenderer.DisablingEventManager	getDisablingFocusManager() Getter for property 'disablingFocusManager'.
int	getModelRow(int row) This method converts grid row number to model row number.
int	getRowByModelRow(int modelRow) Gets a grid row number on the displayed page by a model row number.
protected int	getSubgridRowsBefore(int row) This method calculates subgrid rows number before the specified row.
protected void	removeSubgrid(int parentRow, int parentColumn) This method collapses the cell and removes an appropriate subgrid row.
protected void	renderSubgrid(int parentRow, int parentColumn) This method expands the cell and adds a subgrid row below the current row.

Methods inherited from class org.gwt.advanced.client.ui.widget.DefaultGridRenderer

decorateCell, drawHeaders, drawRow, formatDate, formatString, getCellFactory, getGrid, getListBoxText, getTBodyElement, getTHeadElement, setCellText, setCellWidget

Methods inherited from class java.lang.Object

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

Constructor Detail

HierarchicalGridRenderer

public HierarchicalGridRenderer(EditableGrid grid)

Creates an instance of this class and initializes the grid cell factory.

Parameters:

grid - is a target grid.

Method Detail

drawContent

public void drawContent(GridDataModel model)

This method renders grid content.

Specified by:

drawContent in interface GridRenderer

Overrides:

drawContent in class DefaultGridRenderer

Parameters:

model - is a model to be applied.

drawCell

public void drawCell(Object data,
            int row,
            int column,
            boolean active)

This method draws a particular cell.

Specified by:

drawCell in interface GridRenderer

Overrides:

drawCell in class DefaultGridRenderer

Parameters:

data - is a cell data.

row - is a row number.

column - is a column number.

active - is a falg that indicates that the cell must be active.

getModelRow

public int getModelRow(int row)

This method converts grid row number to model row number.

Specified by:

getModelRow in interface GridRenderer

Overrides:

getModelRow in class DefaultGridRenderer

Parameters:

row - is a row number.

Returns:

a row number.

getRowByModelRow

public int getRowByModelRow(int modelRow)

Gets a grid row number on the displayed page by a model row number.

Specified by:

getRowByModelRow in interface GridRenderer

Overrides:

getRowByModelRow in class DefaultGridRenderer

Parameters:

modelRow - is a model row number.

Returns:

a grid row number.

drawColumn

public void drawColumn(Object[] data,
              int column,
              boolean overwrite)

This method draws a column.

Specified by:

drawColumn in interface GridRenderer

Overrides:

drawColumn in class DefaultGridRenderer

Parameters:

data - is a column data to draw.

column - is a column number

overwrite - is a flag that means whether it's required to overwrite the column cells.

getSubgridRowsBefore

protected int getSubgridRowsBefore(int row)

This method calculates subgrid rows number before the specified row.

Parameters:

row - is a row number.

Returns:

number of subgrid rows.

renderSubgrid

protected void renderSubgrid(int parentRow,
                 int parentColumn)

This method expands the cell and adds a subgrid row below the current row.

Parameters:

parentRow - is a row number.

parentColumn - is a column number.

removeSubgrid

protected void removeSubgrid(int parentRow,
                 int parentColumn)

This method collapses the cell and removes an appropriate subgrid row.

Parameters:

parentRow - is a row number..

parentColumn - is a column number.

dropWrongSelection

protected void dropWrongSelection(int parentRow,
                      int step)

This method drops selection if the specified row is less then one one currently selected rows.

Then it sets a new row to be a current.

Parameters:

parentRow - is a row number to check.

step - is a difference between the selected row and newly selected row. May be negative.

getDisablingFocusManager

public HierarchicalGridRenderer.DisablingEventManager getDisablingFocusManager()

Getter for property 'disablingFocusManager'.

Returns:

Value for property 'disablingFocusManager'.