Rule Builder > User Interface Reference > Decision Tables and Trees > Decision Tree Operations

The operations that are available in the Decision Tree Editor toolbar and shortcut menus are summarized in Table 21.23.

Table 21.23   Decision Tree Toolbar and Menu Operations 
Action 
Icon 
Menu Operation 
Comments 
Edit Selected Element 

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Edit  Opens the appropriate Editor dialog box to customize the selected element values. 
Insert a Decision Node 

images/insertpitem_node_icon.png

Insert a Decision Node  Inserts a decision node in the decision tree. Also displayed next to a selected decision node and action node as a quick action button. 
Add a New Test Link 

images/partitem_link_icon.png

Add>New Test Link  Adds a new test link to the decision tree. Also displayed next to a selected decision node as a quick action button. 
Add All Domain Values 

images/dt06domain_icon.png

Add All Domain Values  Adds all or all remaining domain values to the selected decision node. 
Delete Selected Element 

images/dt08delete_icona.png

Remove Decision Node / Remove Test Link / Remove Action Node / Remove Action Set / Remove Action  Removes the selected element(s) and their branches. 
Display all elements in the branch after the selected element 

images/dtree_expand.png

Expand the Whole Branch  Expands the whole branch from the selected element to the leaves of the branch. 
Display all action sets in the branch after the selected element 

images/dtree_expandasa.png

Expand All Action Sets in the Selected Branch  Expands all the action sets in the leaves of the branch of the selected element. 
Do not display the branch after the selected element 

images/dtree_collapse.png

Collapse the Whole Branch  Collapses the whole branch from the selected element to the leaves of the branch. 
Do not display the action sets in the branch after the selected element 

images/dtree_collapseasa.png

Collapse All Action Sets in the Selected Branch  Collapses all the action sets in the leaves of the branch of the selected element. 
Cut / Copy / Paste 

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Cut / Copy / Paste  Standard edit operations and import/export. See section Cut / Copy / Paste
Select a Tree Element 

images/tool16.png

Point and click on object
The selection interactor lets you select and move objects. Select is the default mode. The selected object is displayed in blue. Select allows single or multiple object selection.  
 
With select active you can: 
  • Select an object by clicking it.
  • Move an object by clicking and holding while moving.
  • Change the selection by clicking a new object.
  • Use Ctrl-click to select multiple objects.
  • Click and drag a rectangle to enclose two or more objects; the objects are all selected and change to blue.
  • To deselect an object, Ctrl-click it, or select another object.
  • Deselect all by clicking anywhere in the background region.
Pan the view  

images/pan.png

Pan  Pan moves and repositions the entire tree. Click the Pan icon, and then click & hold the mouse button to enable panning. Release the mouse to stop the pan. 
Display entire view 

images/tool24.png

Fit to Contents  Fit to Content fits the decision tree to the view window, displaying all objects in the view. This is useful for an overview, but complete trees may not be legible. 
Restore the original size 

images/tool23.png

Reinitialize Zoom  Display Actual Size sets the decision tree in the view back to its original size. 
Display in closer detail 

images/zoomin.png

Zoom In  Each click zooms in the same amount. 
Display in less detail 

images/zoomout.png

Zoom Out  Each click zooms out the same amount. 
Zoom on selected area 

images/zoombox.png

Zoom Box  Click the Zoom Box icon, and then click & drag a rectangle to define the display region. 
Displays the entire decision tree in another window 

images/dtree_overviewa.png

Overview  Focusses on the selected area of the decision tree using a selection rectangle. 
Vertical Layout 

images/dtree_tovert_icon.png

Switch to Vertical Layout  Displays the decision tree vertically, that is, from top to bottom. 
Horizontal Layout 

images/dtree_tohoriz_icon.png

Switch to Horizontal Layout  Displays the decision tree horizontally, that is, from left to right. 
Copy to Clipboard 

images/dtree_copyclipbd.png

Copy Decision Tree Image to Clipboard  Copies the decision image to the clipboard so that you can paste it into another application or editor and print it out. 
Decision Tree Properties Editor 

images/dt23optionseditor_icon.png

Decision Tree Properties  Opens the Decision Tree Properties Editor. 
Move Up 

images/dt11moveup_icon.png

Move Up  Move the selected action up. 
Move Down 

images/dt12movedown_icon.png

Move Down  Move the selected action down. 


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