created: 20201216182347597
modified: 20201217193318816
tags: 
title: How to create dynamic editor toolbar buttons
type: text/vnd.tiddlywiki

\define disabledFilterExample()`[[$(tempBoldDisabled)$]get[state-disabled]else[no]]`

\define remove-shortcuts()
<$action-deletetiddler $tiddler=<<shortcutInfo>>/>
<$action-deletetiddler $tiddler=<<shortcutConfigMac>>/>
<$action-deletetiddler $tiddler=<<shortcutConfigNotMac>>/>
<$action-deletetiddler $tiddler=<<tempBold>>/>
<$action-deletetiddler $tiddler=<<tempBoldDisabled>>/>
\end

\define create-shortcut-tiddlers()
<$action-createtiddler $basetitle=<<shortcutInfo>> 
  $template="$:/config/ShortcutInfo/bold" 
  $overwrite="yes"
/>
<$action-navigate $to=<<shortcutInfo>>/>

<$action-createtiddler $basetitle=<<shortcutConfigMac>> 
  $template="$:/config/shortcuts-mac/bold" 
  $overwrite="yes"
  text="meta-shift-X"
/>
<$action-navigate $to=<<shortcutConfigMac>>/>

<$action-createtiddler $basetitle=<<shortcutConfigNotMac>> 
  $template="$:/config/shortcuts-not-mac/bold" 
  $overwrite="yes"
  text="ctrl-shift-X"
/>
<$action-navigate $to=<<shortcutConfigNotMac>>/>

\end

\define clone-bold()
<$action-createtiddler $basetitle=<<tempBold>> 
  $template="$:/core/ui/EditorToolbar/bold" 
  $overwrite="yes"
  icon="$:/core/images/spiral"
  shortcuts="((temp-bold))"
  condition-disabled="[[$(tempBoldDisabled)$]get[state-disabled]else[no]]"
/>
<$action-sendmessage $message="tm-edit-tiddler" $param=<<tempBold>>/>
\end

\define clone-button-bold()
<$button actions=<<clone-bold>> >Create a Temporary Bold Button</$button>
\end

\define toggle-bold()
<$action-listops  $tiddler=<<tempBoldDisabled>> $field="state-disabled" $subfilter="+[toggle[yes],[no]]" />
\end

<!-- $vars is needed don't remove it! -->
<$vars tempBold="$:/temp/bold" tempBoldDisabled="$:/temp/bold/disabled" shortcutInfo="$:/config/ShortcutInfo/temp-bold"  shortcutConfigMac="$:/config/shortcuts-mac/temp-bold" shortcutConfigNotMac="$:/config/shortcuts-not-mac/temp-bold">

!! Create a New Toolbar Button

The easiest way to create new editor toolbar button is to clone and open one.

><<clone-button-bold>> 

This tiddler contains all the necessary elements that are important for toolbar buttons. 

<<<

; text
: We don't discuss the text field details in this howto

; caption
: The caption field is used to display the shortcut name in the $:/ControlPanel : Keyboard Shortcuts tab

; condition
: A filter, that defines the button visibility state

; condition-disabled  <<.from-version "5.1.23">>
: A ''filter'', that allows us to define the "disabled" attribute for buttons. eg: <<disabledFilterExample>>
:  This condition ''must'' return "no", if the "state tiddler" or "state field" doesn't exist! So there has to be a `else[no]` element in the filter.

; description
: Is used as the button tooltip

; icon 
: Assigns the button icon. We use `$:/core/images/spiral` {{$:/core/images/spiral}} here.

; shortcuts
: This is the [[Keyboard Shortcut Descriptor]] eg: `((temp-bold))`

<<<

!! Disabled State

You can use any "state tiddler" to define the button disabled state. It's important, that the ''condition-disabled'' field is a ''filter''. For our example we use the `state-disabled` field from tiddler: <<tempBoldDisabled>>

The easiest way to test filters is with the $:/AdvancedSearch : Filter tab

> The temporary "bold button" is disabled: ''"{{{ [<tempBoldDisabled>get[state-disabled]else[no]] }}}"'' ... You can see the button in the editor toolbar if you edit any tiddler!

> <$button actions=<<toggle-bold>>>Toggle Temporary Bold Button Visisbility</$button>

!! Create Keyboard Shortcuts for New Button

For our ~HowTo we use the ''Keyboard Shortcut Descriptor'': `((temp-bold))`

To create a valid shortcut configuration we need 2 tiddlers: 

>[[$:/config/ShortcutInfo/|$:/config/ShortcutInfo/temp-bold]]''temp-bold'' .. and
>[[$:/config/shortcuts/|$:/config/shortcuts/temp-bold]]''temp-bold''

> <$button actions=<<create-shortcut-tiddlers>>>Create Shortcut Tiddlers</$button>

!! 

!! Clean up the Configuration Tiddlers

If you don't need the config tiddlers anymore you can 

><$button actions=<<remove-shortcuts>>>Remove the Shortcut Configuration</$button>


</$vars><!-- needed don't remove! -->
