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TiddlyWiki5/core/modules/macros/link.js
Jeremy Ruston 04e91245cb Refactored macro mechanism
Now there is now longer a dummy DOM element corresponding to the macro
itself. Instead, macros must create a single element child. This allows
us to more easily fit Bootstrap's requirements for HTML layout (eg,
that problem with links in navbars not being recognised). The
refactoring isn't complete, there are still a few bugs to chase down
2012-06-09 18:36:32 +01:00

90 lines
2.2 KiB
JavaScript

/*\
title: $:/core/modules/macros/link.js
type: application/javascript
module-type: macro
Implements the link macro.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var isLinkExternal = function(to) {
var externalRegExp = /(?:file|http|https|mailto|ftp|irc|news|data):[^\s'"]+(?:\/|\b)/i;
return externalRegExp.test(to);
};
exports.info = {
name: "link",
params: {
to: {byName: "default", type: "tiddler", skinny: true},
space: {byName: true, type: "text"}
},
events: ["click"]
};
exports.handleEvent = function (event) {
if(event.type === "click") {
if(isLinkExternal(this.params.to)) {
event.target.setAttribute("target","_blank");
return true;
} else {
var navEvent = document.createEvent("Event");
navEvent.initEvent("tw-navigate",true,true);
navEvent.navigateTo = this.params.to;
navEvent.navigateFrom = this;
event.target.dispatchEvent(navEvent);
event.preventDefault();
return false;
}
}
};
exports.executeMacro = function() {
// Assemble the information about the link
var linkInfo = {
to: this.params.to,
space: this.params.space
};
// Generate the default link characteristics
linkInfo.isExternal = isLinkExternal(linkInfo.to);
if(!linkInfo.isExternal) {
linkInfo.isMissing = !this.wiki.tiddlerExists(linkInfo.to);
}
linkInfo.attributes = {
href: linkInfo.to
};
if(!linkInfo.isExternal) {
linkInfo.attributes.href = encodeURIComponent(linkInfo.to);
}
// Generate the default classes for the link
linkInfo.attributes["class"] = ["tw-tiddlylink"];
if(linkInfo.isExternal) {
linkInfo.attributes["class"].push("tw-tiddlylink-external");
} else {
linkInfo.attributes["class"].push("tw-tiddlylink-internal");
if(linkInfo.isMissing) {
linkInfo.attributes["class"].push("tw-tiddlylink-missing");
} else {
linkInfo.attributes["class"].push("tw-tiddlylink-resolves");
}
}
if(this.classes) {
$tw.utils.pushTop(linkInfo.attributes["class"],this.classes);
}
// Create the link
var child;
if(linkInfo.suppressLink) {
child = $tw.Tree.Element("span",{},this.content);
} else {
child = $tw.Tree.Element("a",linkInfo.attributes,this.content);
}
child.execute(this.parents,this.tiddlerTitle);
return child;
};
})();