Overview > Fixed Columns TableTree

Fixed Columns TableTree

Belongs to the following category: Extension,

Purpose

Implements a TableTree version where the first columns are docked to the left border, whereas the remaining columns are horizontally scrollable. Is useful when you have a tabletree with many columns that requires horizontal scrolling. The first couple of columns may hold a description for the rows which must stay at the left border, independently of scrolling.

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Resources

Download the complete source code and jar files here.
Download the jar file to be used server side here.
Download the jar file to be used client side here.

How to use

Create first the model of your ULCFixedColumnsTableTree. You can do this implementing the ITableTreeModel interface.
Create the ULCFixedColumnTableTree, passing the model, the first scrollable column index, the list of column withs and the expandAll flag.

ITableTreeModel model = createModel();
…
ULCFixedColumn result = new ULCFixedColumn(model,2,new int[]{100,130,100,100,100,100,100}, true);

Note: the default behaviour is "setColumnSelectionAllowed". If you need to change it, do it using the ULCFixedColumnTableTree API.

How it is implemented

The solution chosen uses directly the ULCScrollPane "rowHeaderView" and "viewPortView" properties.
Internally two separated ULCTableTree are managed. Both ULCTableTree objects can be retrieved through the API.
The TreeSelectionEvents of both elements are forwarded to ULCFixedColumnTableTree, so that you can add a ITreeSelectionListener to ULCFixedColumnTableTree.

Added server side API

On server-side we add API to manage the common selection type. Use this API to change it. setRowSelectionAllowed(true) is the default.

public void addTreeSelectionListener(ITreeSelectionListener selectionListener);public void removeTreeSelectionListener(ITreeSelectionListener selectionListener);
public void setRowSelectionAllowed(boolean rowSelectionAllowed);
public void setColumnSelectionAllowed(boolean columnSelectionAllowed);
public void setCellSelectionEnabled(boolean cellSelectionEnabled);
public ULCTableTree getRowHeaderTableTree();
public ULCTableTree getViewPortTableTree();