Documentation:FollowEnable: Difference between revisions

FollowEnable

Latest revision as of 05:50, 20 January 2025

This page was created by Hans.karlsen@mdriven.net on 2024-01-10. Last edited by Edgar on 2025-01-20.

In the ViewModelEditor, when selecting a ViewModelColumn, you see this:

The FollowEnable (Follow Enable) checkbox is there to reduce the need to write a VisibleExpression in the common case that you want your VisibleExpression to be a Negation of the ReadOnlyExpression.

Example

ReadOnlyExpression:

self.ThisShouldBeReadOnlyAndInvisible

You would then also need a VisibleExpression of:

not self.ThisShouldBeReadOnlyAndInvisible

Instead of filling the VisibleExpression, simply click the FollowEnable box behind the VisibleExpression. This will use a negated ReadOnlyExpression as the VisibleExpression automatically. You will not need to maintain 2 expressions.

(The reasoning for calling it "follow enable" rather than "follow a negated readonly" is purely space conservative.)

@@ Line 1: / Line 1: @@
-In the ViewModelEditor - when selecting a ViewModelColumn you see this:
+<message>Write the content here to display this box</message>
-[[File:FollowEnable 1704890566909.png|none|thumb|596x596px]]
+In the ViewModelEditor, when selecting a ViewModelColumn, you see this:
+[[File:FollowEnable 1704890566909.png|none|thumb|738x738px]]
 The FollowEnable (Follow Enable) checkbox is there to reduce the need to write a VisibleExpression in the common case that you want your VisibleExpression to be a Negation of the ReadOnlyExpression.
-Example:
+== Example ==
+ReadOnlyExpression:
+ <span class="col-black">self.ThisShouldBeReadOnlyAndInvisible</span>
+You would then also need a VisibleExpression of:
+ not self.ThisShouldBeReadOnlyAndInvisible
+Instead of filling the VisibleExpression, simply click the '''FollowEnable''' box behind the VisibleExpression. This will use a negated ReadOnlyExpression as the VisibleExpression automatically. You will not need to maintain 2 expressions.
-ReadOnlyExpression: self.ThisShouldBeReadOnlyAndInvisible
+(The reasoning for calling it "follow enable" rather than "follow a negated readonly" is purely space conservative.)
+[[Category:Expressions]]
-You would then also need a VisibleExpression of : not self.ThisShouldBeReadOnlyAndInvisible
+{{Edited|July|12|2025}}
-Instead of filling the VisibleExpression you simply click the FollowEnable box behind the VisibleExpression. This will use a negated ReadOnlyExpression as the VisibleExpression automatically and you do not need to maintain 2 expressions.
-(the reasoning for calling it "follow enable" rather than "follow a negated readonly" is purely space conservative)

Latest revision as of 05:50, 20 January 2025

Example

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