TREE container

The TREE container defines the presentation of a list of ordered records in a tree-view widget.

Syntax

TREE [identifier] [ ( attribute [,...] ) ]
{
 title [...]
 [name_column   [|identifier   [|...]] ]
[...]
}  
END
  1. identifier defines the name of the element, it is optional but recommended.
  2. attribute is an attribute for the element.
  3. title is the text to be displayed as column title.
  4. name_column is a mandatory column referencing a form item defining the node text.
  5. identifier references a form item.

Form attributes

COMMENT, DOUBLECLICK, HIDDEN, FONTPITCH, STRETCHCOLUMNS, STYLE, TAG, UNHIDABLECOLUMNS, UNMOVABLECOLUMNS, UNSIZABLECOLUMNS, UNSORTABLECOLUMNS, WANTFIXEDPAGESIZE, WIDTH, HEIGHT, PARENTIDCOLUMN, IDCOLUMN, EXPANDEDCOLUMN, ISNODECOLUMN, IMAGEEXPANDED, IMAGECOLLAPSED, IMAGELEAF.

Style attributes

Common: backgroundColor, border, fontFamily, fontSize, fontStyle, fontWeight, textColor, textDecoration.

Class-specific: allowWebSelection, alternateRows, forceDefaultSettings, headerAlignment, headerHidden, highlightColor, highlightCurrentRow, highlightTextColor, leftFrozenColumns, resizeFillsEmptySpace, rightFrozenColumns, rowActionTrigger, rowHover, showGrid, tableType.

Usage

To create a tree view in a grid-based layout, you must define the following elements in the form file:

  1. The layout of the tree-view, with a TREE container in the LAYOUT section.
  2. The column data types and field properties, in the ATTRIBUTES section.
  3. The field list definition to group form fields together with a screen array, in the INSTRUCTIONS section.

For more details about this item type, see TREE item type.

Example

LAYOUT 
GRID
{
<Tree t1                       >
 Name                   Index 
[c1                     |c2    ]
[c1                     |c2    ]
[c1                     |c2    ]
[c1                     |c2    ]
}
END 
END

ATTRIBUTES
LABEL c1 = FORMONLY.name;
LABEL c2 = FORMONLY.idx;
PHANTOM FORMONLY.pid;
PHANTOM FORMONLY.id;
TREE t1: tree1
    PARENTIDCOLUMN = pid,
    IDCOLUMN = id;
END

INSTRUCTIONS
SCREEN RECORD sr_tree(name, pid, id, idx);
END