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TiddlyWiki5/core/modules/macros/link.js
2012-05-19 15:13:17 +01:00

89 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 $tw: false */
"use strict";
var isLinkExternal = function(to) {
var externalRegExp = /(?:file|http|https|mailto|ftp|irc|news|data):[^\s'"]+(?:\/|\b)/i;
return externalRegExp.test(to);
};
exports.info = {
name: "link",
params: {
to: {byName: "default", type: "tiddler", skinny: true},
space: {byName: true, type: "text"}
},
events: ["click"]
};
exports.handleEvent = function (event) {
if(event.type === "click") {
if(isLinkExternal(this.params.to)) {
event.target.setAttribute("target","_blank");
return true;
} else {
var navEvent = document.createEvent("Event");
navEvent.initEvent("tw-navigate",true,true);
navEvent.navigateTo = this.params.to;
navEvent.navigateFrom = this;
event.target.dispatchEvent(navEvent);
event.preventDefault();
return false;
}
}
};
exports.executeMacro = function() {
// Assemble the information about the link
var linkInfo = {
to: this.params.to,
space: this.params.space
};
// Generate the default link characteristics
linkInfo.isExternal = isLinkExternal(linkInfo.to);
if(!linkInfo.isExternal) {
linkInfo.isMissing = !this.wiki.tiddlerExists(linkInfo.to);
}
linkInfo.attributes = {
href: linkInfo.to
};
if(!linkInfo.isExternal) {
linkInfo.attributes.href = encodeURIComponent(linkInfo.to);
}
// Generate the default classes for the link
linkInfo.attributes["class"] = ["tw-tiddlylink"];
if(linkInfo.isExternal) {
linkInfo.attributes["class"].push("tw-tiddlylink-external");
} else {
linkInfo.attributes["class"].push("tw-tiddlylink-internal");
if(linkInfo.isMissing) {
linkInfo.attributes["class"].push("tw-tiddlylink-missing");
} else {
linkInfo.attributes["class"].push("tw-tiddlylink-resolves");
}
}
// Create the link
var children;
if(linkInfo.suppressLink) {
children = this.cloneContent();
} else {
children = [$tw.Tree.Element("a",linkInfo.attributes,this.cloneContent())];
}
for(var t=0; t<children.length; t++) {
children[t].execute(this.parents,this.tiddlerTitle);
}
return children;
};
})();