Set modified field and other metadata for newly created and modified tiddlers

Right now we're setting the created/modified time, and only setting the
creator/modifier if the tiddler `$:/status/UserName` is defined.

core/modules/commands/server.js

@@ -124,7 +124,7 @@ var Command = function(params,commander,callback) {
 			if(fields["revision"]) {
 				delete fields["revision"];
 			}
-			state.wiki.addTiddler(new $tw.Tiddler(fields,{title: title}));
+			state.wiki.addTiddler(new $tw.Tiddler(fields,{title: title},state.wiki.getModificationFields()));
 			var changeCount = state.wiki.getChangeCount(title).toString();
 			response.writeHead(204, "OK",{
 				Etag: "\"default/" + title + "/" + changeCount + ":\""

core/modules/startup.js

@@ -47,7 +47,7 @@ exports.startup = function() {
 	for(var t=0; t<defaultTiddlers.length; t++) {
 		story[t] = defaultTiddlers[t];
 	}
-	$tw.wiki.addTiddler({title: storyTitle, text: story.join("\n")});
+	$tw.wiki.addTiddler({title: storyTitle, text: story.join("\n")},$tw.wiki.getModificationFields());
 	// Host-specific startup
 	if($tw.browser) {
 		// Call browser startup modules

core/modules/widgets/import.js

@@ -239,7 +239,7 @@ ImportWidget.prototype.importFiles = function(files) {
 };
 
 ImportWidget.prototype.storeTiddler = function(fields) {
-	this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(fields));
+	this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(fields,this.renderer.renderTree.wiki.getModificationFields()));
 };
 
 ImportWidget.prototype.generateTitle = function(baseTitle) {

core/modules/widgets/navigator.js

@@ -144,7 +144,9 @@ NavigatorWidget.prototype.handleEditTiddlerEvent = function(event) {
 					title: draftTitle,
 					"draft.title": event.tiddlerTitle,
 					"draft.of": event.tiddlerTitle
-				}));
+				},
+				this.renderer.renderTree.wiki.getModificationFields()
+				));
 		}
 	}
 	this.saveStoryList();
@@ -196,12 +198,11 @@ NavigatorWidget.prototype.handleSaveTiddlerEvent = function(event) {
 			var tiddler = this.renderer.renderTree.wiki.getTiddler(event.tiddlerTitle);
 			if(tiddler.hasField("draft.title")) {
 				// Save the draft tiddler as the real tiddler
-				this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(tiddler,{
+				this.renderer.renderTree.wiki.addTiddler(new $tw.Tiddler(this.renderer.renderTree.wiki.getCreationFields(),tiddler,{
 					title: tiddler.fields["draft.title"],
-					modified: new Date(),
 					"draft.title": undefined, 
 					"draft.of": undefined
-				}));
+				},this.renderer.renderTree.wiki.getModificationFields()));
 				// Remove the draft tiddler
 				this.renderer.renderTree.wiki.deleteTiddler(event.tiddlerTitle);
 				// Remove the original tiddler if we're renaming it
@@ -262,10 +263,10 @@ NavigatorWidget.prototype.handleNewTiddlerEvent = function(event) {
 			break;
 		}
 	}
-	var tiddler = new $tw.Tiddler({
+	var tiddler = new $tw.Tiddler(this.renderer.renderTree.wiki.getCreationFields(),{
 		title: title,
 		text: "Newly created tiddler"
-	});
+	},this.renderer.renderTree.wiki.getModificationFields());
 	this.renderer.renderTree.wiki.addTiddler(tiddler);
 	// Create the draft tiddler
 	var draftTitle = this.generateDraftTitle(title),
@@ -274,7 +275,7 @@ NavigatorWidget.prototype.handleNewTiddlerEvent = function(event) {
 			title: draftTitle,
 			"draft.title": title,
 			"draft.of": title
-		});
+		},this.renderer.renderTree.wiki.getModificationFields());
 	this.renderer.renderTree.wiki.addTiddler(draftTiddler);
 	// Update the story to insert the new draft at the top
 	var slot = this.findTitleInStory(event.navigateFromTitle,-1) + 1;

core/modules/wiki.js

@@ -24,6 +24,8 @@ last dispatched. Each entry is a hashmap containing two fields:
 /*global $tw: false */
 "use strict";
 
+var USER_NAME_TITLE = "$:/status/UserName";
+
 /*
 Get the value of a text reference. Text references can have any of these forms:
 	<tiddlertitle>
@@ -56,7 +58,7 @@ exports.setTextReference = function(textRef,value,currTiddlerTitle) {
 	// Check if it is a reference to a tiddler
 	if(tr.title && !tr.field) {
 		tiddler = this.getTiddler(tr.title);
-		this.addTiddler(new $tw.Tiddler(tiddler,{title: tr.title,text: value}));
+		this.addTiddler(new $tw.Tiddler(tiddler,{title: tr.title,text: value},this.getModificationFields()));
 	// Else check for a field reference
 	} else if(tr.field) {
 		title = tr.title || currTiddlerTitle;
@@ -64,7 +66,7 @@ exports.setTextReference = function(textRef,value,currTiddlerTitle) {
 		if(tiddler) {
 			fields = {};
 			fields[tr.field] = value;
-			this.addTiddler(new $tw.Tiddler(tiddler,fields));
+			this.addTiddler(new $tw.Tiddler(tiddler,fields,this.getModificationFields()));
 		}
 	}
 };
@@ -82,7 +84,7 @@ exports.deleteTextReference = function(textRef,currTiddlerTitle) {
 		if(tiddler && $tw.utils.hop(tiddler.fields,tr.field)) {
 			fields = {};
 			fields[tr.field] = undefined;
-			this.addTiddler(new $tw.Tiddler(tiddler,fields));
+			this.addTiddler(new $tw.Tiddler(tiddler,fields,this.getModificationFields()));
 		}
 	}
 };
@@ -194,6 +196,34 @@ exports.addTiddler = function(tiddler) {
 	this.enqueueTiddlerEvent(title);
 };
 
+/*
+Return a hashmap of the fields that should be set when a tiddler is modified
+*/
+exports.getCreationFields = function() {
+	var fields = {
+			created: new Date()
+		},
+		creator = this.getTiddlerText(USER_NAME_TITLE);
+	if(creator) {
+		fields.creator = creator;
+	}
+	return fields;
+};
+
+/*
+Return a hashmap of the fields that should be set when a tiddler is created
+*/
+exports.getModificationFields = function() {
+	var fields = {
+			modified: new Date()
+		},
+		modifier = this.getTiddlerText(USER_NAME_TITLE);
+	if(modifier) {
+		fields.modifier = modifier;
+	}
+	return fields;
+};
+
 /*
 Return a sorted array of non-system tiddler titles, optionally filtered by a tag 
 */
@@ -457,7 +487,7 @@ Set a tiddlers content to a JavaScript object. Currently this is done by setting
 */
 exports.setTiddlerData = function(title,data) {
 	var tiddler = this.getTiddler(title);
-	this.addTiddler(new $tw.Tiddler(tiddler,{title: title, type: "application/json", text: JSON.stringify(data,null,$tw.config.preferences.jsonSpaces)}));
+	this.addTiddler(new $tw.Tiddler(tiddler,{title: title, type: "application/json", text: JSON.stringify(data,null,$tw.config.preferences.jsonSpaces)},this.getModificationFields()));
 };
 
 /*

core/wiki/ControlPanel.tid

@@ -6,6 +6,8 @@ title: $:/ControlPanel
 
 * [[Subtitle|SiteSubtitle]]: <$edit tiddler="SiteSubtitle" default="" type="input"/>
 
+* [[Username for signing edits|$:/status/UserName]]: <$edit tiddler="$:/status/UserName" default="" type="input"/>
+
 * Edit [[DefaultTiddlers|$:/DefaultTiddlers]] to choose which tiddlers are displayed at startup
 
 ! Import tiddlers