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Retriving Info from Tree Items

kdolan

Hi, I am trying to familiarize myself with how to make tree's via Cadence Skill and then how to insert them into a GUI. Where I am getting stuck is retrieving information from the selected tree items.

I've added some simple code below as an example. My intentions are for when the user clicks the button ('getTreeItemInfo), this function will return the values from the headers of the selected items. For example, the users selects item0 in the tree, this should return (1 101 201), the three values from headers for item 1. This would ideally also work for multiple selections. 

Any help is greatly appreciated.

Keelan

procedure( TreeGUI()
prog( (TreeGUIForm treeGuiField getTreeItemInfo)


treeGuiField = hiCreateTreeTable(
?name 'treeGuiField
?headers list(list("Counter" 125 'left)
list("Counter +100" 125 'left)
list("Counter +200" 125 'left)
)
?choice getMyTree()
)

getTreeItemInfo = hiCreateFormButton(
?name 'getTreeItemInfo
?buttonText "Get Item Info"
?callback "hiTreeTableGetSelectedItems(TreeGUIForm~>treeGuiField)"
)


TreeGUIForm = hiCreateAppForm(
?name 'TreeGUIForm
?formTitle "Tree Test"
?fields list(
list(treeGuiField 10:15 410:350 10)
list(getTreeItemInfo 10:370 100:30 10)
)
?dialogStyle 'modeless
?buttonLayout '(OKCancelApply)
?initialSize t
)
hiDisplayForm(TreeGUIForm)
);let
);procedure

procedure(getMyTree()
prog( (outputTree outputTreeItem)

outputTree = hiCreateTree('outputTree)
for(i 1 10
outputTreeItem = hiCreateTreeItem('outputTreeItem list(sprintf(nil "%L" i) sprintf(nil "%L" i+100) sprintf(nil "%L" i+200)))
hiTreeAppendItem(outputTree outputTreeItem)
)

return(outputTree)
);prog
);procedure

  • The main issue you had was that each tree item needs to be a unique symbol (you were using the same for all items). I've adapted your code slightly and added a callback function to print out the selected information:

    procedure( TreeGUI()
  prog( (TreeGUIForm treeGuiField getTreeItemInfo)

    treeGuiField = hiCreateTreeTable(
      ?name 'treeGuiField
      ?headers list(list("Counter" 125 'left)
        list("Counter +100" 125 'left)
        list("Counter +200" 125 'left)
        )
      ?choice getMyTree()
    )

    getTreeItemInfo = hiCreateFormButton(
      ?name 'getTreeItemInfo
      ?buttonText "Get Item Info"
      ;?callback "hiTreeTableGetSelectedItems(TreeGUIForm~>treeGuiField)"
      ?callback "PrintTreeSelectedItems(TreeGUIForm~>treeGuiField)"
    )

    TreeGUIForm = hiCreateAppForm(
      ?name 'TreeGUIForm
      ?formTitle "Tree Test"
      ?fields list(
        list(treeGuiField 10:15 410:350 10)
        list(getTreeItemInfo 10:370 100:30 10)
      )
      ?dialogStyle 'modeless
      ?buttonLayout '(OKCancelApply)
      ?initialSize t 
      )
    hiDisplayForm(TreeGUIForm)
  );let
);procedure

procedure(getMyTree()
  prog( (outputTree outputTreeItem)

    outputTree = hiCreateTree('outputTree)
    for(i 1 10
      ; each tree item needs to be a unique symbol
      outputTreeItem = hiCreateTreeItem(concat('outputTreeItem i) list(sprintf(nil "%L" i) sprintf(nil "%L" i+100) sprintf(nil "%L" i+200)))
      hiTreeAppendItem(outputTree outputTreeItem)
    )

    return(outputTree)
  );prog
);procedure

procedure(PrintTreeSelectedItems(field)
  foreach(item hiTreeTableGetSelectedItems(field)
    printf("Selected: %L : Description: %L\n"
      item hiGetTreeItemDescription(symeval(item))
    )
  )
)
  • in reply to Andrew Beckett

    That was my issue! Works perfectly now. Thanks Andrew!

  • in reply to kdolan

    Hi, you should also note that hiCreateTree... functions create your objects and associate them in SKILL top level namespace

    This can lead to bugs in case you duplicate your code or reuse the same names somewhere else

    You should wrap your symbols using gensym  to avoid problems in the future

    hiCreateTree(gensym('outputTree))

    hiCreateTreeItem(gensym('outputTreeItem) ...)

    Hope this helps

    Cheers

    Aurélien

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