DBTreeView

Servoy extra components contains two tree components. The difference between the two is the model, the dbtreeview is based on foundset(s) while treeview is based on dataset.

DbTreeview shows multiple tree levels based on relation. From top foundset (datasource), one can show related nodes specified by a relation. Note that each relation is a database query , so for performance should not abuse the tree expand (from javascript). The tree works lazy and initializes data as requested.

Usual tree features are included, show a node checkbox, node image, tooltip, click callback, expand node... More information about model/api can be seen in Servoy Developer.

This component is a porting to NG of Servoy's DBTreeView bean, you can find more details about the migration here: https://wiki.servoy.com/display/DOCS/Upgrading+to+Servoy+8.x.x#UpgradingtoServoy8.x.x-DBTreeView

Here is a sample code of the tree initialization:

//set the relation to discover other nodes (when clicked open)
elements.dbtreeview.setNRelationName(controller.getDataSource(), 'book_nodes_to_book_nodes_parent_childs');
		
//set the name of dataprovider to use for text display on a node
elements.dbtreeview.setTextDataprovider(controller.getDataSource(), 'label_text');

//set the method to call and dataprovider value to pass when node clicked
elements.dbtreeview.setCallBackInfo(controller.getDataSource(), globals.node_selected,'node_id');

//search the root node(s)
controller.find();
parent_id = 0;
controller.search();

//set the root node(s) and set the name of dataprovider to use for text display on a node
elements.dbtreeview.addRoots(foundset);

var pathAr = new Array(1,2,3);
elements.dbtreeview.setSelectionPath(pathAr);

DBTreeView properties

The component has only one public property, component should be handled via API:

Property	Type	Default	Description
visible	visible	true	When false component is not visible

DBTreeView API

Method	Params	Return	Description
addRoots	root:foundsetRef		Add foundset to the list of foundsets used to create the tree's root nodes.
removeAllRoots			Remove all root foundsets.
refresh			Refresh the tree display.
isNodeExpanded	pk:object[]	boolean	Returns if a node in tree is expanded. The path is given by an array of foundset primary keys, one pk for each level of the tree
setExpandNode	pk: object[] , state: boolean		Set expand state on node identified by array of primary keys.
setNodeLevelVisible	level: int , visible: boolean		Expand or collapse tree to certain level.
setTextDataprovider	datasource: string , textdataprovider: string		Set dataprovider that will be displed for a foundset from the tree(each level in tree has foundset as a model).
setNRelationName	datasource: string , nrelationname: string		Set relation for displaying a datasource foundset.
setHasCheckBoxDataprovider	datasource: string , hascheckboxdataprovider: string		Set dataprovider for deciding if checkbox will be displayed for a certain foundset (tree level).
setCallBackInfo	datasource: string , callbackfunction: function, param: string		Set callback method that will be called when expanding/collapsing a node in a foundset(tree level).
setCheckBoxValueDataprovider	datasource: string , checkboxvaluedataprovider: string		Set dataprovider for the checkbox value to show(checked/unchecked).
setMethodToCallOnCheckBoxChange	datasource: string , callbackfunction :function, param: string		Set callback method that will be called when checkbox is clicked/changed.
setToolTipTextDataprovider	datasource: string , tooltiptextdataprovider: string		Set dataprovider for the tooltip text displayed for a datasource foundset.
setImageURLDataprovider	datasource: string , imageurldataprovider: string		Set dataprovider for the image displayed in tree node for a datasource foundset.
setChildSortDataprovider	datasource: string , childsortdataprovider: string		Set the dataprovider name to retrieve column name and sort order for the child nodes. The provided data must be a string of form : column_name_used_for_sort sort_order(asc or desc).
setMethodToCallOnDoubleClick	datasource: string , callbackfunction: function, param: string		Set callback info for a datasource foundset doubleclick event.
setSelectionPath	pk:object[]		Sets selected node in the tree. The path is given by an array of foundset primary keys, one pk for each level of the tree
getSelectionPath		object[]	Gets selected node in the tree. The path is given by an array of foundset primary keys, one pk for each level of the tree