title: $:/core/macros/toc
tags: $:/tags/Macro

\whitespace trim

\procedure toc-defaultItemTemplate()
<span class="tc-toc-caption tc-tiny-gap-left" title={{!!tooltip}}>
<$let tv-wikilinks="no">
	<$transclude $tiddler={{{ [<itemTemplate>!is[blank]then<itemTemplate>else<currentTiddler>] }}}
		$field={{{ [<itemTemplate>!is[blank]then[text]] :else[<captionField>!is[blank]then<captionField>else[caption]] }}}
	>
		<$view field="title"/>
	</$transclude>
</$let>
</span>
\end

<!-- returns the title of an itemTemplate tiddler -->
\function tf.toc-getItemTemplate() [<itemTemplate>!is[blank]then<itemTemplate>] :else[<currentTiddler>get[toc-itemTemplate]]

\procedure _itemTemplate()
<$transclude $tiddler=<<tf.toc-getItemTemplate>> >
	<<toc-defaultItemTemplate>>
</$transclude>
\end

<!-- v5.2.4 add "Custom Icons" -->
\procedure toc-open-icon() $:/core/images/down-arrow
\procedure toc-closed-icon() $:/core/images/right-arrow

\procedure toc-hideField()    toc-hide
\procedure toc-includeField() toc-include
\procedure toc-filterField()  toc-filter

<!-- helper functions for li class definitions -->
\function tf.toc-itemClassFilter() [<selectedTiddler>get[text]match<currentTiddler>then[toc-item-selected]else[toc-item]]
\function tf.toc-includeClass()    [subfilter<tf.toc-include>match<currentTiddler>then[toc-item-include]]
\function tf.toc-filterClass()     [subfilter<tf.toc-filter>match<currentTiddler>then[toc-item-filter]]
\function tf.toc-hideClass()       [<tf.toc-hide>!is[blank]then[toc-item-hide]]
<!-- join the CSS definitions from above -->
\function tf.toc-itemClass()       [<tf.toc-itemClassFilter>] [<tf.toc-includeClass>] [<tf.toc-filterClass>] [<tf.toc-hideClass>] +[join[ ]]

<!-- the following functions need to use <currentTiddler> -->
\function tf.toc-getHideText() [<currentTiddler>get<toc-hideField>]
\function tf.toc-hideIsYes()   [<currentTiddler>format:titlelist[]]
<!-- Special case, if toc-hide field is "yes", we need a currentTiddler *titlelist* -- otherwise return the content as text -->
\function tf.toc-hide()        [<tf.toc-getHideText>match[yes]then<tf.toc-hideIsYes>] :else[<tf.toc-getHideText>]

<!-- tf.toc-include and tf.toc-filter need to use <tag> -->
\function tf.toc-include()     [<tag>get<toc-includeField>]
\function tf.toc-filter()      [<tag>get<toc-filterField>]

<!-- Use a field instead of a tag -->
\procedure toc-filterDefault() [all[shadows+tiddlers]tag<tag>!has[draft.of]]
\procedure toc-filterParent()  [has<parentField>!has[draft.of]] :filter[get<parentField>match<tag>]
\procedure toc-filterTagLike() [<tag>get<tagField>enlist-input[]]

<!-- activate the filterString depending on tagField, parentField or default. tagField takes precedence -->
\function tf.toc-filterString() [<tagField>!is[blank]then<toc-filterTagLike>] :else[<parentField>!is[blank]then<toc-filterParent>else<toc-filterDefault>]

<!-- define unique path based state title -->
\function tf.toc-newPath() [<path>addsuffix[/]addsuffix<tag>]

<!-- toc helper -->
\procedure toc-body(tag,sort:"",itemClassFilter,exclude,path)
<!-- Be aware: if parentField is set, the "tag" parameter contains the currentTiddler -->
<$set name=currentTiddler filter="[<parentField>!is[blank]then<tag>else<currentTiddler>]">
<ol class="tc-toc">
	<!-- text substitution is needed for backwards compatibility -->
	<$list filter=` [subfilter<tf.toc-filter>]
					:else[subfilter<tf.toc-filterString>$(sort)$]
					[subfilter<tf.toc-include>] -[<tag>] -[subfilter<exclude>]`>
		<%if [<currentTiddler>] -[subfilter<tf.toc-hide>] %>
			<$let item=<<currentTiddler>> _path=<<tf.toc-newPath>> >
				<!-- adding tf.toc-hide, excludes blocked elements from all visible sub-nodes -->
				<$set name="_excluded" filter="[subfilter<exclude>] [<tag>] [subfilter<tf.toc-hide>]">
					<li class=<<tf.toc-itemClass>>>
						<% if [all[current]toc-link[no]] %>
							<<_itemTemplate>>
						<% else %>
							<!-- v5.1.23 use target-field if present in tiddler -->
							<$link to={{{ [<currentTiddler>get[target]else<currentTiddler>] }}}>
								<<_itemTemplate>>
							</$link>
						<% endif %>
						<!-- toc-body only calls itself, so only modified variables have to be passed on. -->
						<!-- The rest can be reused from toc-parameters -->
						<$macrocall $name="toc-body" tag=<<item>> exclude=<<_excluded>> path=<<_path>>
						/>
					</li>
				</$set>
			</$let>
		<% endif %>
	</$list>
</ol>
</$set>
\end
<!--  -->
<!-- <$log tag=<<tag>> parentField=<<parentField>> toc-filter=<<toc-filter>> ct=<<currentTiddler>> captionField=<<captionField>>/> -->
<!--  -->

<!-- =============================================================
Simple toc macro which alwayse shows the full tree
This macro is _not_ used by other toc-macros
v5.3.4 itemClassFilter has been replaced by tf.toc-itemClassFilter
================================================================== -->
\procedure toc(tag, sort:"", itemClassFilter, exclude, tagField, parentField, captionField, itemTemplate)
<$macrocall $name="toc-body" tag=<<tag>> sort=<<sort>> exclude=<<exclude>>/>
\end

<!--
	If a toc-itme shows a link. Clicking the caption will open the tiddler
	If toc-item is linked, the _itemTemplate is managed in the parent procedure
	If a toc-item should not show a link, the _itemTemplate is part of the button. So it can be clicked to open / close the branch
-->
\procedure toc-item(isUnlinked:"")
<% if [<toc-state>get[text]else[close]match[close]] %>
	<$button setTitle=<<toc-state>> setTo="open" class="tc-btn-invisible tc-popup-keep" tooltip=<<toc-state>>>
		<$transclude tiddler=<<toc-closed-icon>> />
		<% if [<isUnlinked>match[yes]] %>
			<<_itemTemplate>>
		<% endif %>
	</$button>
<% elseif [<toc-state>get[text]match[open]] %>
	<$button setTitle=<<toc-state>> setTo="close" class="tc-btn-invisible tc-popup-keep" tooltip=<<toc-state>>>
		<$transclude tiddler=<<toc-open-icon>> />
		<% if [<isUnlinked>match[yes]] %>
			<<_itemTemplate>>
		<% endif %>
	</$button>
<% endif %>
\end

\function tf.toc-stateTitle() [[$:/state/toc]] [<path>] "/" [<currentTiddler>] +[join[]]

\procedure toc-linked-expandable-body(tag,sort:"",itemClassFilter,exclude,path,tagField,parentField,captionField,itemTemplate)
<$qualify name="toc-state" title=<<tf.toc-stateTitle>> >
	<li class=<<tf.toc-itemClass>>>
		<!-- v5.1.23 use target-field if present in tiddler -->
		<$link to={{{ [<currentTiddler>get[target]else<currentTiddler>] }}}>
			<<toc-item>>
			<<_itemTemplate>>
		</$link>
		<!-- TODO auto expand -->
		<% if [<toc-state>get[text]match[open]] %>
			<$macrocall $name="toc-expandable"
				tag=<<currentTiddler>> sort=<<sort>> exclude=<<exclude>> path=<<path>>
				tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
				itemTemplate=<<itemTemplate>>
			/>
		<% endif %>
	</li>
</$qualify>
\end

\procedure toc-unlinked-expandable-body(tag,sort:"",itemClassFilter,exclude,path,tagField,parentField,captionField,itemTemplate)
<$qualify name="toc-state" title=<<tf.toc-stateTitle>>>
	<li class=<<tf.toc-itemClass>>>
		<<toc-item isUnlinked:"yes">>
		<!-- TODO auto expand -->
		<% if [<toc-state>get[text]match[open]] %>
			<$macrocall $name="toc-expandable"
				tag=<<currentTiddler>> sort=<<sort>> exclude=<<exclude>> path=<<path>>
				tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
				itemTemplate=<<itemTemplate>>
			/>
		<% endif %>
	</li>
</$qualify>
\end

<!-- ==========================================================
Shows an expandable toc. Item always have an open/close chevron
=============================================================== -->
\procedure toc-expandable(tag,sort:"",itemClassFilter:"",exclude,path,tagField,parentField,captionField,itemTemplate)
<$set name=currentTiddler filter="[<parentField>!is[blank]then<tag>else<currentTiddler>]">
<ol class="tc-toc toc-expandable">
	<!-- text substitution is needed for backwards compatibility -->
	<$list filter=` [subfilter<tf.toc-filter>]
					:else[subfilter<tf.toc-filterString>$(sort)$]
					[subfilter<tf.toc-include>] -[<tag>] -[subfilter<exclude>]`>
		<%if [<currentTiddler>] -[subfilter<tf.toc-hide>] %>
			<$let _path=<<tf.toc-newPath>>>
				<$set name="_excluded" filter="[subfilter<exclude>] [<tag>] [subfilter<tf.toc-hide>]">
					<% if [all[current]toc-link[no]] %>
						<$macrocall $name="toc-unlinked-expandable-body"
							tag=<<tag>> sort=<<sort>> exclude=<<_excluded>> path=<<_path>>
							tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
							itemTemplate=<<itemTemplate>>
						/>
					<% else %>
						<$macrocall $name="toc-linked-expandable-body"
							tag=<<tag>> sort=<<sort>> exclude=<<_excluded>> path=<<_path>>
							tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
							itemTemplate=<<itemTemplate>>
						/>
					<% endif %>
				</$set>
			</$let>
		<% endif %>
	</$list>
</ol>
</$set>
\end

\function tf.toc-curTidInclude() [<currentTiddler>get<toc-includeField>]

\procedure toc-linked-selective-expandable-body(tag,sort:"",itemClassFilter,exclude,path,tagField,parentField,captionField,itemTemplate)
<$qualify name="toc-state" title=<<tf.toc-stateTitle>>>
	<li class=<<tf.toc-itemClass>>>
		<!-- v5.1.23 use target-field if present in tiddler -->
		<$link to={{{ [<currentTiddler>get[target]else<currentTiddler>] }}}>
			<!-- The subfilter<exclude> needs to be the last filter run -->
			<% if [has<parentField>] :filter[get<parentField>match<..currentTiddler>] +[limit[1]] %>
				<<toc-item>>
			<% elseif [all[current]tagging[]] [subfilter<tf.toc-curTidInclude>] -[subfilter<exclude>] +[limit[1]] %>
				<<toc-item>>
			<% else %>
				<$button class='tc-btn-invisible'>
					{{$:/core/images/blank}}
				</$button>
			<% endif %>
			<<_itemTemplate>>
		</$link>
		<!-- TODO auto expand -->
		<% if [<toc-state>get[text]match[open]] %>
			<$macrocall $name="toc-selective-expandable"
				tag=<<currentTiddler>> sort=<<sort>> exclude=<<exclude>> path=<<path>>
				tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
				itemTemplate=<<itemTemplate>>

			/>
		<% endif %>
	</li>
</$qualify>
\end

\procedure toc-unlinked-selective-expandable-body(tag,sort:"",itemClassFilter,exclude,path,tagField,parentField,captionField,itemTemplate)
<$qualify name="toc-state" title=<<tf.toc-stateTitle>> >
	<li class=<<tf.toc-itemClass>>>
		<% if [has<parentField>] :filter[get<parentField>match<..currentTiddler>] +[limit[1]] %>
			<<toc-item>>
		<% elseif [all[current]tagging[]] [subfilter<tf.toc-curTidInclude>] -[subfilter<exclude>] +[limit[1]] %>
			<<toc-item isUnlinked:"yes">>
		<% else %>
			<$button class="tc-btn-invisible">
				{{$:/core/images/blank}}
			</$button>
			<span class="toc-item-muted">
				<<_itemTemplate>>
			</span>
		<% endif %>
		<!-- TODO auto expand -->
		<% if [<toc-state>get[text]match[open]] %>
			<$macrocall $name="toc-selective-expandable"
				tag=<<currentTiddler>> sort=<<sort>> exclude=<<exclude>> path=<<path>
				tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
				itemTemplate=<<itemTemplate>>
			/>
		<% endif %>
	</li>
</$qualify>
\end

<!-- =====================================================
Shows a selctive expandable toc. 
If an item has no children, there is no open/close chevron
========================================================== -->
\procedure toc-selective-expandable(tag,sort:"",itemClassFilter,exclude,path,tagField,parentField,captionField,itemTemplate)
<$set name=currentTiddler filter="[<parentField>!is[blank]then<tag>else<currentTiddler>]">
<ol class="tc-toc toc-selective-expandable">
	<!-- text substitution is needed for backwards compatibility -->
	<$list filter=` [subfilter<tf.toc-filter>]
					:else[subfilter<tf.toc-filterString>$(sort)$]
					[subfilter<tf.toc-include>] -[<tag>] -[subfilter<exclude>]`>
		<%if [<currentTiddler>] -[subfilter<tf.toc-hide>] %>
			<$let _path=<<tf.toc-newPath>>>
				<$set name="_excluded" filter="[subfilter<exclude>] [<tag>] [subfilter<tf.toc-hide>]">
					<% if [all[current]toc-link[no]] %>
						<$macrocall $name="toc-unlinked-selective-expandable-body"
							tag=<<tag>> sort=<<sort>> exclude=<<_excluded>> path=<<_path>>
							tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
							itemTemplate=<<itemTemplate>>
						/>
					<% else %>
						<$macrocall $name="toc-linked-selective-expandable-body"
							tag=<<tag>> sort=<<sort>> exclude=<<_excluded>> path=<<_path>>
							tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
							itemTemplate=<<itemTemplate>>
						/>
					<% endif %>
				</$set>
			</$let>
		<% endif %>
	</$list>
</ol>
</$set>
\end

<!-- ==============================================================
Shows a tabbed toc.
If a toc-item link is clicked it will open the tiddler in the story 
=================================================================== -->
\procedure toc-tabbed-external-nav(tag,sort:"",selectedTiddler:"$:/temp/toc/selectedTiddler",unselectedText,missingText,template:"",exclude,tagField,parentField,captionField,itemTemplate)
<$tiddler tiddler={{{ [<selectedTiddler>get[text]] }}}>
	<div class="tc-tabbed-table-of-contents">
		<$linkcatcher to=<<selectedTiddler>>>
			<div class="tc-table-of-contents">
				<!-- v5.3.4 itemClassFilter has been replaced by tf.toc-itemClassFilter -->
				<$macrocall $name="toc-selective-expandable"
					tag=<<tag>> sort=<<sort>> exclude=<<exclude>>
					tagField=<<tagField>> parentField=<<parentField>> captionField=<<captionField>>
					itemTemplate=<<itemTemplate>>
				/>
			</div>
		</$linkcatcher>
		<div class="tc-tabbed-table-of-contents-content">
			<$reveal stateTitle=<<selectedTiddler>> type="nomatch" text="">
				<$transclude mode="block" tiddler=<<template>>>
					<h1><<_itemTemplate>></h1>
					<$transclude mode="block">$missingText$</$transclude>
				</$transclude>
			</$reveal>
			<$reveal stateTitle=<<selectedTiddler>> type="match" text="">
				<<unselectedText>>
			</$reveal>
		</div>
	</div>
</$tiddler>
\end

<!-- ========================================================
Shows a tabbed toc. If a toc-item link is clicked 
it will open the tiddler in the view area of the same tiddler
============================================================= -->
\procedure toc-tabbed-internal-nav(tag,sort:"",selectedTiddler:"$:/temp/toc/selectedTiddler",unselectedText,missingText,template:"",exclude,tagField,parentField,captionField,itemTemplate)
<$linkcatcher to=<<selectedTiddler>>>
	<$macrocall $name="toc-tabbed-external-nav"
		tag=<<tag>>
		sort=<<sort>>
		selectedTiddler=<<selectedTiddler>>
		unselectedText=<<unselectedText>>
		missingText=<<missingText>>
		template=<<template>>
		exclude=<<exclude>>
		tagField=<<tagField>>
		parentField=<<parentField>>
		captionField=<<captionField>>
		itemTemplate=<<itemTemplate>>
	/>
</$linkcatcher>
\end