From 0bda00ae71e46137a396a0334d48a799e4ecf4b7 Mon Sep 17 00:00:00 2001
From: Jeremy Ruston <jeremy@osmosoft.com>
Date: Fri, 9 Aug 2013 16:46:17 +0100
Subject: [PATCH] Extend the fieldlist widget to retrieve all fields used
 across all tiddlers

---
 core/modules/widgets/fieldlist.js |  7 ++++++-
 core/modules/wiki.js              | 11 +++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/core/modules/widgets/fieldlist.js b/core/modules/widgets/fieldlist.js
index 0995c0e53..937fb6c1b 100644
--- a/core/modules/widgets/fieldlist.js
+++ b/core/modules/widgets/fieldlist.js
@@ -22,6 +22,7 @@ var FieldListWidget = function(renderer) {
 FieldListWidget.prototype.generate = function() {
 	var self = this;
 	// Get parameters from our attributes
+	this.allTiddlers = this.renderer.hasAttribute("all");
 	this.tiddlerTitle = this.renderer.getAttribute("tiddler",this.renderer.tiddlerTitle);
 	this.exclude = this.renderer.getAttribute("exclude");
 	// Get the exclusion list
@@ -85,7 +86,11 @@ FieldListWidget.prototype.removeListElement = function(index) {
 FieldListWidget.prototype.getFieldList = function() {
 	var tiddler = this.renderer.renderTree.wiki.getTiddler(this.tiddlerTitle),
 		fieldList = [];
-	if(tiddler) {
+	// If requested, return all fields used on all tiddlers
+	if(this.allTiddlers) {
+		fieldList = this.renderer.renderTree.wiki.getAllTiddlerFields();
+	} else if(tiddler) {
+		// Return the fields on the specified tiddler
 		for(var fieldName in tiddler.fields) {
 			if(this.excludeList.indexOf(fieldName) === -1) {
 				fieldList.push(fieldName);
diff --git a/core/modules/wiki.js b/core/modules/wiki.js
index 1289b7507..dd5f29bcb 100644
--- a/core/modules/wiki.js
+++ b/core/modules/wiki.js
@@ -307,6 +307,17 @@ exports.forEachTiddler = function(/* [sortField,[excludeTag,]]callback */) {
 	}
 };
 
+exports.getAllTiddlerFields = function() {
+	var results = [];
+	for(var title in this.tiddlers) {
+		$tw.utils.each(this.tiddlers[title].fields,function(field,fieldName) {
+			$tw.utils.pushTop(results,fieldName);
+		});
+	}
+	results.sort();
+	return results;
+};
+
 /*
 Return an array of tiddler titles that are directly linked from the specified tiddler
 */