mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-14 13:54:50 +00:00
37 lines
1.7 KiB
Plaintext
37 lines
1.7 KiB
Plaintext
created: 20211204161649863
|
|
modified: 20211206165129215
|
|
tags: Learning Cascades [[Tiddler Icon Cascade]] [[Customise TiddlyWiki]]
|
|
title: How to create a custom tiddler icon rule
|
|
type: text/vnd.tiddlywiki
|
|
|
|
Here we show how to add a rule to the [[Tiddler Icon Cascade]] that causes tiddlers with the tag <<tag "TableOfContents">> to be given the "globe" icon <<.icon $:/core/images/globe>> and tiddlers with the tag <<tag "Working with TiddlyWiki">> to be given the "help" icon <<.icon $:/core/images/help>>.
|
|
|
|
<<.tip "[[How to create a custom tiddler colour rule]] describes how the same tiddlers have been given a custom colour">>
|
|
|
|
First, we add a new step to the tiddler icon cascade. The new filter step is:
|
|
|
|
```
|
|
[tag[TableOfContents]then[$:/core/images/globe]]
|
|
[tag[Working with TiddlyWiki]then[$:/core/images/help]]
|
|
```
|
|
|
|
It can be read as:
|
|
|
|
```
|
|
If the tiddler has the tag "TableOfContents" then return $:/core/images/globe
|
|
Else if the tiddler has the tag "Working with TiddlyWiki" then return $:/core/images/help
|
|
```
|
|
|
|
The tiddler icon cascade is defined by the tag <<tag "$:/tags/TiddlerIconFilter">>, so we need to create a configuration tiddler with that tag.
|
|
|
|
We also need to make sure that it is inserted at the correct point in the cascade:
|
|
|
|
* The new rule must be after the "icon-field" rule to ensure that tiddlers with an explicit ''icon'' field will respect the value of that field
|
|
* The new rule must be before the "default" icon otherwise it will never be seen if the default icon is specified
|
|
|
|
The control panel "Cascades" tab shows that this can be achieved by inserting the new step immediately before the default step using the `list-before` field.
|
|
|
|
The full list of fields in the configuration tiddler is:
|
|
|
|
<<.tiddler-fields "$:/_tw5.com/CustomTiddlerIconCascadeDemo">>
|