HandlePopupMenu
$R = HandlePopupMenu($1) $R = Result $1 = Table
Routine Operation that interprets columns in table as depth/name/index/unselectable/selected(tick) and builds and displays a popup menu. Selection of an item in the menu or dismissing the menu returns a result ($R).
The operation takes a 5 column table as a parameter (the table can have more than 5 columns but only the first 5 are used). The name of the columns are not important but the positions must be ordered as follows.
The columns are:
- depth
- sets the depth of the submenu, 0 = top level
- label
- the text label for the menu item
- id
- return id for menu item
- unavailable
- sets the menu item to unselectable (gray), <>0 = unselectable
- tick
- places a menu tick next to the menu item
The menu structure is defined by enumerating the menu items in prefix order, for example for:
| File | Edit | Tools | ||
|---|---|---|---|---|
| New | Cut | Add | ---> | Table |
| Load | Paste | Label | ||
| Save | Reset | |||
| Quit |
| depth | label | id | unavailable | tick |
|---|---|---|---|---|
| 0 | File | 0 | 0 | 0 |
| 1 | New | 1 | 0 | 0 |
| 1 | Load | 2 | 0 | 0 |
| 1 | Save | 3 | 1 | 0 |
| 1 | Quit | 4 | 0 | 0 |
| 0 | Edit | 0 | 0 | 0 |
| 1 | Cut | 5 | 0 | 0 |
| 1 | Paste | 6 | 0 | 0 |
| 0 | Tools | 0 | 0 | 0 |
| 1 | Add | 0 | 0 | 0 |
| 2 | Table | 7 | 0 | 0 |
| 2 | Label | 8 | 0 | 0 |
| 1 | Reset | 9 | 0 | 0 |
You can use a label of '-' as a separator between menu items.
When a menu selection is made the return attribute ($R) will contain the index (from the index column) of the selected menu item.
Menu items flagged as unavailable will be shown in Grey and cannot be selected.
Useful when creating end user applications with Planimate.