org.gwt.advanced.client.datamodel

Class LazyTreeGridDataModel

java.lang.Object

org.gwt.advanced.client.datamodel.TreeGridDataModel

org.gwt.advanced.client.datamodel.LazyTreeGridDataModel

All Implemented Interfaces:

Composite, Editable, GridDataModel, LazyLoadable, LazyLoadableComposite, Pageable

public class LazyTreeGridDataModel
extends TreeGridDataModel
implements LazyLoadableComposite

This class implements lazy loadable tree grid data model.

Since:

1.4.0

Author:

Sergey Skladchikov

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	LazyTreeGridDataModel.DelegateLazyGridDataModel This is a delegate class for lazy tree rows creation.

Nested classes/interfaces inherited from class org.gwt.advanced.client.datamodel.TreeGridDataModel

TreeGridDataModel.DelegateEditableGridDataModel

Constructor Summary

Constructors

Constructor and Description
LazyTreeGridDataModel(Object[][] data) Creates an instance of this class and initializes data putting into lazy loadable delegate.
LazyTreeGridDataModel(TreeDataModelCallbackHandler<? extends Composite,? extends LazyTreeGridRow> handler) Creates an inistanec of this class and synchronizes data using the handler.

Method Summary

Methods

Modifier and Type	Method and Description
int	addRow(TreeGridRow parent, Object[] row) Adds a child row.
int	getEndRow(TreeGridRow parent) Returns an end row number of the subgrid.
int	getTotalRowCount(TreeGridRow parent) This method gets a total row count for the specified subtree.
void	removeAll(TreeGridRow parent) Removes all the children of the specified row.
void	removeRow(TreeGridRow parent, int rowNumber) Removes the child row.
void	setTotalRowCount(int totalRowCount) This method sets a total row count for a lazy loadable model.
void	setTotalRowCount(TreeGridRow gridRow, int totalRowCount) Sets a total gridRow count of the subtree rows.
void	update(TreeGridRow parent, Object[][] children) Adds a list of child rows.

Methods inherited from class org.gwt.advanced.client.datamodel.TreeGridDataModel

addColumn, addColumn, addListener, addRow, clearRemovedRows, clearRemovedRows, fireRowEvent, getChildrenList, getColumnNames, getColumns, getCurrentPageNumber, getCurrentPageNumber, getData, getDelegate, getDisplayedPages, getDisplayedPages, getEndPage, getEndPage, getEndRow, getExpandableColumn, getGridColumn, getHandler, getPageSize, getPageSize, getPagingFlags, getRemovedRows, getRemovedRows, getRemovedRowsList, getRemovedRowsMap, getRootRows, getRow, getRow, getRowData, getRows, getRows, getSortColumn, getStartPage, getStartPage, getStartRow, getStartRow, getSubRows, getThisModel, getTotalColumnCount, getTotalPagesNumber, getTotalPagesNumber, getTotalRowCount, isAscending, isEmpty, isSubtreePagingEnabled, remapIndexes, removeAll, removeColumn, removeColumn, removeListener, removeRow, setAscending, setColumNames, setCurrentPageNumber, setCurrentPageNumber, setDelegate, setDisplayedPages, setDisplayedPages, setExpandableColumn, setExpandableColumn, setHandler, setPageSize, setPageSize, setPagingFlags, setParent, setSortColumn, setSortColumn, setSortColumn, setSubRows, setSubtreePagingEnabled, update, update, update, updateColumn, updateColumn, updateRow, updateRow

Methods inherited from class java.lang.Object

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

Constructor Detail

LazyTreeGridDataModel

public LazyTreeGridDataModel(Object[][] data)

Creates an instance of this class and initializes data putting into lazy loadable delegate.

Parameters:

data - is a data set to put.

LazyTreeGridDataModel

public LazyTreeGridDataModel(TreeDataModelCallbackHandler<? extends Composite,? extends LazyTreeGridRow> handler)

Creates an inistanec of this class and synchronizes data using the handler.

Parameters:

handler - is a handler to be used for synchronization.

Method Detail

getTotalRowCount

public int getTotalRowCount(TreeGridRow parent)

This method gets a total row count for the specified subtree.

Specified by:

getTotalRowCount in interface Composite

Overrides:

getTotalRowCount in class TreeGridDataModel

Parameters:

parent - is a parent row.

Returns:

a total row count value.

setTotalRowCount

public void setTotalRowCount(int totalRowCount)

This method sets a total row count for a lazy loadable model.

Specified by:

setTotalRowCount in interface LazyLoadable

Parameters:

totalRowCount - is a total row count.

setTotalRowCount

public void setTotalRowCount(TreeGridRow gridRow,
                    int totalRowCount)

Sets a total gridRow count of the subtree rows.

Specified by:

setTotalRowCount in interface LazyLoadableComposite

Parameters:

gridRow - is a parent gridRow.

totalRowCount - is a total gridRow count of the subtree rows.

addRow

public int addRow(TreeGridRow parent,
         Object[] row)
           throws IllegalArgumentException

Adds a child row.

Specified by:

addRow in interface Composite

Overrides:

addRow in class TreeGridDataModel

Parameters:

parent - is a parent row.

row - row data.

Returns:

a new row index.

Throws:

IllegalArgumentException

update

public void update(TreeGridRow parent,
          Object[][] children)

Adds a list of child rows.

Specified by:

update in interface Composite

Overrides:

update in class TreeGridDataModel

Parameters:

parent - is a parent row.

children - is child rows data.

removeRow

public void removeRow(TreeGridRow parent,
             int rowNumber)
               throws IllegalArgumentException

Removes the child row.

Specified by:

removeRow in interface Composite

Overrides:

removeRow in class TreeGridDataModel

Parameters:

parent - is a parent row.

rowNumber - is a row number to remove.

Throws:

IllegalArgumentException

getEndRow

public int getEndRow(TreeGridRow parent)

Returns an end row number of the subgrid.

Specified by:

getEndRow in interface Composite

Overrides:

getEndRow in class TreeGridDataModel

Parameters:

parent - is a parent row of the subgrid.

Returns:

an end row number.

removeAll

public void removeAll(TreeGridRow parent)

Removes all the children of the specified row.

Specified by:

removeAll in interface Composite

Overrides:

removeAll in class TreeGridDataModel

Parameters:

parent - is a parent row.