Major updates to text-slicer plugin

* In the interests of performance and expressiveness, switched to using a Sax parser instead of a DOM implementation.
* Use extensible declarative rules to control the slicing process
* Added new optional set of rules for slicing by heading, where the paragraphs underneath a heading are packed into the same tiddler as the heading
* Added a modal dialogue for specifying parameters when slicing in the browser

plugins/tiddlywiki/text-slicer/templates/interactive/document.tid

@@ -22,12 +22,12 @@ $:/state/plugins/tiddlywiki/text-slicer/heading-status/$(currentTiddler)$
 <div class="tc-sliced-document">
 <div class="tc-sliced-document-header">
 <div class="tc-document-tiddler-toolbar">
-<$reveal type="nomatch" state=<<config-document-status>> text="close" default="open">
+<$reveal type="nomatch" state=<<config-document-status>> text="close" default="open" tag="div">
 <$button set=<<config-document-status>> setTo="close" class="tc-btn-invisible">
 {{$:/core/images/down-arrow}}
 </$button>
 </$reveal>
-<$reveal type="match" state=<<config-document-status>> text="close" default="open">
+<$reveal type="match" state=<<config-document-status>> text="close" default="open" tag="div">
 <$button set=<<config-document-status>> setTo="open" class="tc-btn-invisible">
 {{$:/core/images/right-arrow}}
 </$button>
@@ -35,7 +35,7 @@ $:/state/plugins/tiddlywiki/text-slicer/heading-status/$(currentTiddler)$
 </div>
 <h1 class="tc-sliced-document-title">''Document'': <$link><$view field="title"/></$link></h1>
 </div>
-<$reveal type="nomatch" state=<<config-document-status>> text="close" default="open">
+<$reveal type="nomatch" state=<<config-document-status>> text="close" default="open" tag="div">
 {{||$:/plugins/tiddlywiki/text-slicer/ui/document/header}}
 <div class='tc-sliced-document-body'>
 <$set name="tv-show-toolbar" value={{$(config-show-toolbar)$}}>

plugins/tiddlywiki/text-slicer/templates/interactive/heading.tid

@@ -8,12 +8,12 @@ $(tv-heading-status-config-title)$/$(tv-heading-status-config-prefix)$/$(current
 <$set name="tv-heading-status-config-title" value=<<config-heading-status>>>
 <div class="tc-document-tiddler">
 <div class="tc-document-tiddler-toolbar">
-<$reveal type="nomatch" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>>>
+<$reveal type="nomatch" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>> tag="div">
 <$button set=<<tv-heading-status-config-title>> setTo="close" class="tc-btn-invisible">
 {{$:/core/images/down-arrow}}
 </$button>
 </$reveal>
-<$reveal type="match" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>>>
+<$reveal type="match" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>> tag="div">
 <$button set=<<tv-heading-status-config-title>> setTo="open" class="tc-btn-invisible">
 {{$:/core/images/right-arrow}}
 </$button>
@@ -22,7 +22,7 @@ $(tv-heading-status-config-title)$/$(tv-heading-status-config-prefix)$/$(current
 <$link tag="$level$" class="tc-document-tiddler-link">
 <$transclude/>
 </$link>
-<$reveal type="nomatch" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>>>
+<$reveal type="nomatch" state=<<tv-heading-status-config-title>> text="close" default=<<tv-default-heading-state>> tag="div">
 <$list filter="[list<currentTiddler>!has[draft.of]]" template="$:/plugins/tiddlywiki/text-slicer/templates/interactive/tiddler"/>
 </$reveal>
 </div>

plugins/tiddlywiki/text-slicer/templates/interactive/tiddler.tid

@@ -1,45 +1,28 @@
 title: $:/plugins/tiddlywiki/text-slicer/templates/interactive/tiddler
 
+\define if(condition,then,else)
+<$list filter="""$condition$ +[limit[1]]""" emptyMessage="""$else$""" variable="ignore">
+$then$
+</$list>
+\end
+
+\define include-component(type)
+<<if "[{!!toc-type}prefix[$type$]]" """
+<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/$type$" mode="block"/>
+""">>
+\end
+
 <$list filter="[<tv-show-toolbar>prefix[yes]]" variable="hasToolbar">
 {{||$:/plugins/tiddlywiki/text-slicer/ui/tiddler/toolbar}}
 </$list>
 
-<$reveal type="match" state="!!toc-type" text="document">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/document" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="heading">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/heading" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="paragraph">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/paragraph" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="note">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/note" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="list">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/list" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="item">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/item" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="image">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/image" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="def-list">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/def-list" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="term">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/term" mode="block"/>
-</$reveal>
-
-<$reveal type="match" state="!!toc-type" text="definition">
-<$transclude tiddler="$:/plugins/tiddlywiki/text-slicer/templates/interactive/definition" mode="block"/>
-</$reveal>
+<<include-component "document">>
+<<include-component "heading">>
+<<include-component "paragraph">>
+<<include-component "note">>
+<<include-component "list">>
+<<include-component "item">>
+<<include-component "image">>
+<<include-component "def-list">>
+<<include-component "term">>
+<<include-component "definition">>