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Code Issues Releases Wiki Activity

LinkWidget: Add support for tv-filter-export-link

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This change makes it possible to perform the conversion from target
tiddler title to `href` value as a filter expression (previously a
JavaScript macro was needed to use the tv-get-export-link variable)
This commit is contained in:
Jermolene 2017-08-28 11:06:21 +01:00
parent 2381fb5312
commit 06ea4060cb
4 changed files with 53 additions and 10 deletions
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18
core/modules/widgets/link.js
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@ -80,14 +80,26 @@ LinkWidget.prototype.renderLink = function(parent,nextSibling) {
}
domNode.setAttribute("class",classes.join(" "));
// Set an href
var wikiLinkTemplateMacro = this.getVariable("tv-wikilink-template"),
wikiLinkTemplate = wikiLinkTemplateMacro ? wikiLinkTemplateMacro.trim() : "#$uri_encoded$",
var wikilinkTransformFilter = this.getVariable("tv-filter-export-link"),
wikiLinkText;
if(wikilinkTransformFilter) {
// Use the filter to construct the href
wikiLinkText = this.wiki.filterTiddlers(wikilinkTransformFilter,this,function(iterator) {
iterator(self.wiki.getTiddler(self.to),self.to)
})[0];
} else {
// Expand the tv-wikilink-template variable to construct the href
var wikiLinkTemplateMacro = this.getVariable("tv-wikilink-template"),
wikiLinkTemplate = wikiLinkTemplateMacro ? wikiLinkTemplateMacro.trim() : "#$uri_encoded$";
wikiLinkText = $tw.utils.replaceString(wikiLinkTemplate,"$uri_encoded$",encodeURIComponent(this.to));
wikiLinkText = $tw.utils.replaceString(wikiLinkText,"$uri_doubleencoded$",encodeURIComponent(encodeURIComponent(this.to)));
wikiLinkText = $tw.utils.replaceString(wikiLinkText,"$uri_doubleencoded$",encodeURIComponent(encodeURIComponent(this.to)));
}
// Override with the value of tv-get-export-link if defined
wikiLinkText = this.getVariable("tv-get-export-link",{params: [{name: "to",value: this.to}],defaultValue: wikiLinkText});
if(tag === "a") {
domNode.setAttribute("href",wikiLinkText);
}
// Set the tabindex
if(this.tabIndex) {
domNode.setAttribute("tabindex",this.tabIndex);
}

20
editions/tw5.com/tiddlers/tv-filter-export-link Variable.tid Normal file
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@ -0,0 +1,20 @@
caption: tv-filter-export-link
created: 20170828095135984
modified: 20170828095757620
tags: Variables [[Core Variables]] [[Configuration Variables]]
title: tv-filter-export-link Variable
type: text/vnd.tiddlywiki
The <<.def tv-filter-export-link>> [[variable|Variables]] controls the value of the `href` attribute on the HTML `a` element generated by the <<.wlink LinkWidget>> widget. If defined, it takes precedence over the [[tv-wikilink-template Variable]].
<<.this-is-static-link-variable>>
The variable is treated as a filter that is given the target tiddler title as input. The filter is evaluated and the first result is used as the `href` attribute.
For example:
```
\define tv-filter-export-link() [encodeuricomponent[]encodeuricomponent[]addsuffix[.html]]
```
See also the <<.vlink tv-get-export-link>> variable, which dominates over this one.

12
editions/tw5.com/tiddlers/variables/tv-wikilink-template.tid
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@ -1,11 +1,11 @@
created: 20150228105954000
modified: 20150228131300000
title: tv-wikilink-template Variable
tags: Variables [[Core Variables]] [[Configuration Variables]]
type: text/vnd.tiddlywiki
caption: tv-wikilink-template
created: 20150228105954000
modified: 20170828095603911
tags: Variables [[Core Variables]] [[Configuration Variables]]
title: tv-wikilink-template Variable
type: text/vnd.tiddlywiki
The <<.def tv-wikilink-template>> [[variable|Variables]] controls the value of the `href` attribute on the HTML `a` element generated by the <<.wlink LinkWidget>> widget.
The <<.def tv-wikilink-template>> [[variable|Variables]] controls the value of the `href` attribute on the HTML `a` element generated by the <<.wlink LinkWidget>> widget. The <<.vlink tv-filter-export-link>>, if defined, it takes precedence over the <<.vlink tv-wikilink-template>> variable.
<<.this-is-static-link-variable>>

13
editions/tw5.com/tiddlers/widgets/LinkWidget.tid
View File

@ -1,6 +1,6 @@
caption: link
created: 20131024141900000
modified: 20170328172846359
modified: 20170828100455842
tags: Widgets
title: LinkWidget
type: text/vnd.tiddlywiki
@ -60,9 +60,20 @@ This causes the tooltip to be the ''tooltip'' field of the target tiddler. If th
* `tc-tiddlylink-missing` - applied to tiddler links where the target tiddler doesn't exist
* `tc-tiddlylink-resolves` - applied to tiddler links when the target tiddler does exist
! `href` generation
The following process is used to generate the `href` attribute of the generated HTML `<a>` element:
# If <<.vlink tv-get-export-link>> is defined it is invoked to convert the target tiddler title to the `href` value
#* In practice, only a [[JavaScript macro|Macros]] can be used
# If <<.vlink tv-filter-export-link>> is defined it is interpreted as a filter that converts the target tiddler title to the `href` value
# If <<.vlink tv-wikilink-template>> is defined it is treated as a specialised macro body that can perform limited conversion of the target tiddler title to the `href` value
# Otherwise, the target tiddler title is URI encoded to create the `href`
! Configuration variables
* <<.vlink tv-wikilinks>>
* <<.vlink tv-filter-export-link>>
* <<.vlink tv-wikilink-template>>
* <<.vlink tv-wikilink-tooltip>>
* <<.vlink tv-get-export-link>>