From 829909bffa8460ac0f303b4fe5878dd491d0c4cd Mon Sep 17 00:00:00 2001
From: Jeremy Ruston <jeremy@osmosoft.com>
Date: Wed, 20 Jun 2012 17:40:41 +0100
Subject: [PATCH] New hide macro

Used for selectively hiding blocks of content
---
 core/modules/macros/hide.js | 48 +++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 core/modules/macros/hide.js

diff --git a/core/modules/macros/hide.js b/core/modules/macros/hide.js
new file mode 100644
index 000000000..663d2be58
--- /dev/null
+++ b/core/modules/macros/hide.js
@@ -0,0 +1,48 @@
+/*\
+title: $:/core/modules/macros/hide.js
+type: application/javascript
+module-type: macro
+
+A macro that selectively hides its children
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.info = {
+	name: "hide",
+	params: {
+		tiddler: {byName: "default", type: "tiddler"},
+		notequal: {byName: true, type: "text"}
+	}
+};
+
+exports.executeMacro = function() {
+	var attributes = {}, children, text, show = false;
+	if(this.classes) {
+		attributes["class"] = this.classes.slice(0);
+	}
+	if(this.hasParameter("tiddler")) {
+		text = this.wiki.getTextReference(this.params.tiddler);
+		if(this.hasParameter("notequal")) {
+			if(text === this.params.notequal) {
+				show = true;
+			}
+		}
+		if(show) {
+			children = this.content;
+			for(var t=0; t<children.length; t++) {
+				children[t].execute(this.parents,this.tiddlerTitle);
+			}
+		}
+	}
+	return $tw.Tree.Element(this.isBlock ? "div" : "span",attributes,children,{
+		events: ["tw-navigate"],
+		eventHandler: this
+	});
+};
+
+})();