Action info
Action info ( action {; target} ) -> Function result
| Parameter | Type | Description | |
|---|---|---|---|
| action | Text | → | Standard action name or pattern including parameter if required |
| target | Integer | → | Defines the target of the action to get information: main form or current form |
| Function result | Object | ← | Object containing action status as boolean properties: isEnabled, isVisible, isChecked, isMixed, isUnknownState |
Description
The Action info command returns several information, including availability and status, about the defined action in the target, according to the current application context.
In action, pass the standard action to to check. It can be a string or a constant from the Standard Action theme. It can be a string or a constant from the Standard Action theme. Some actions accept a target element and parameters. In this case, you must use the requested pattern, for example "gotoPage?value=2" or paragraph/backgroundPositionV?value=top.
Available 4D actions are listed in the Standard actions section of the 4D Design Reference manual.
Note: Additional specific actions are also provided for 4D Write Pro documents. They are detailed in the Using 4D Write Pro standard actions section of the 4D Write Pro Reference manual.
You can pass in target the form context where the action must be executed, if available. You can use one of the following constants from the Standard Action theme:
| Constant | Type | Value | Comment |
|---|---|---|---|
| ak current form | Longint | 1 | The current form is the form where the action was called. It could be either the main form or a palette form in front of the main form of the current process. |
| ak main form | Longint | 2 | The main form is the frontmost document or dialog form of the process, excluding any floating or pop-up window. |
Note: If target is omitted, by default the ak current form context is used.
The Action info command returns information in the form of an object containing the following properties:
| Property | Type | Description | ||||||
|---|---|---|---|---|---|---|---|---|
| enabled | Boolean | true if the action can be invoked, false otherwise | ||||||
| status | String | Value can be one of the following strings:
| ||||||
| title | Text | Current localized name of the action label. Ex: "Undo", "Paste", etc. for the english version. | ||||||
| visible | Boolean | true if the action is visible in the form | ||||||
| value | String | Current value of the action parameter string (if any). For example, if the standard action is "fontSize?value=10pt", the value property contains "10pt" |
If the action status cannot be determined (for example if it is not affected to any object or menu command), the command returns a null object (undefined).
Example
You want to know if the copy action is available (i.e. if some data is selected):
var $actionInfo : Object
var $isEnabled : Boolean
$actionInfo:=Action info(ak copy)
If(Not(Undefined($actionInfo.enabled))) //action is defined in the process
If(OB Get($actionInfo;"enabled"))
... //the copy action is available
End if
End if