2025 November Release
COOSYSTEM@1.1:attruichangeexpr
Expression for Handling Changes of Values
This expression is evaluated for a property on an application view for displaying values.
It can be defined in order to trigger the re-evaluation of filter constraints or to set or clear the values of other properties.
It gets evaluated when the value of the property gets changed i.e. when the focus leaves the control.
If an error occurs during evaluation, the error is displayed in UI.
The expression is ignored, if the valuetype of the application view is query mode,
instead the
A return value is not required
Explanation:
Defines an app.ducx expression that handles the change of a value of the property in the user interface (see also
It can be defined in order to trigger the re-evaluation of filter constraints or to set or clear the values of other properties.
It gets evaluated when the value of the property gets changed i.e. when the focus leaves the control.
If an error occurs during evaluation, the error is displayed in UI.
The expression is ignored, if the valuetype of the application view is query mode,
instead the
attruisearchchangeexpr expression is evaluated for the property if exists.A return value is not required
Explanation:
Defines an app.ducx expression that handles the change of a value of the property in the user interface (see also
attruichangeexpr).
string[] COOSYSTEM@1.1:attruichangeexpr
readonly(inst)(
object ::root,
AttributeDefinition ::attribute,
any ::parent,
any ::value,
boolean ::isvalue,
boolean ::isedit,
boolean ::iseditcommon,
boolean ::isdashboard,
boolean ::iscalccelledit,
boolean ::issingleattribute,
Action ::context)
Local Scope: dictionary
Global Scope: dictionary
Name |
Description |
|---|---|
|
::root |
contains the object the expression is evaluated for. ::root is identical to
cooobj. |
|
::attribute |
contains the property the expression is evaluated for.
|
|
::parent |
the parent of
cooobj. |
|
::value |
the current value of the property.
|
|
::isvalue |
contains
true if the form is used for displaying values (edit mode or read-only mode) opposed to query mode (see valuetype in ApplicationView). |
|
::isedit |
contains
true if the form is in edit mode opposed to read-only mode (see edittype in ApplicationView). ::isedit is only valid if ::isvalue is true. |
|
::iseditcommon |
contains
true if the form is used to edit common properties of multiple objects. ::iseditcommon is only valid if ::isvalue is true.
In this case ::root/cooobj refer to the first object of the selection. |
|
::isdashboard |
contains
true if the property is displayed in a dashboard. |
|
::iscalccelledit |
contains
true if the property is displayed while editing in a cell (F2). |
|
::issingleattribute |
contains
true if the property is displayed in single attribute mode, i. e. when all other properties of a form page are hidden. |
|
::context |
contains the view action which is used to determine the form.
Typical view actions are:
|