Part two of turning the rabbit hole inside out

core/modules/macros/edit/edit.js

@@ -0,0 +1,80 @@
+/*\
+title: $:/core/modules/macros/edit/edit.js
+type: application/javascript
+module-type: macro
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.info = {
+	name: "edit",
+	dependentOnContextTiddler: true,
+	params: {
+		field: {byPos: 0, type: "text"}
+	}
+};
+
+exports.executeMacro = function() {
+	// Get the tiddler being editted
+	var field = this.hasParameter("field") ? this.params.field : "text",
+		tiddler = this.wiki.getTiddler(this.tiddlerTitle),
+		Editor;
+	// Figure out which editor to use
+	// TODO: Tiddler field plugins should be able to specify a field type from which the editor is derived
+	if(field === "text" && tiddler.fields.type) {
+		Editor = this.wiki.macros.edit.editors[tiddler.fields.type];
+	}
+	if(!Editor) {
+		Editor = this.wiki.macros.edit.editors["text/x-tiddlywiki"];
+	}
+	this.editor = new Editor(this);
+	// Call the editor to generate the child nodes
+	var children = this.editor.getChildren();
+	for(var t=0; t<children.length; t++) {
+		children[t].execute(this.parents,this.tiddlerTitle);
+	}
+	return children;
+};
+
+exports.addEventHandlers = function() {
+	if(this.editor.addEventHandlers) {
+		this.editor.addEventHandlers();
+	}
+};
+
+exports.postRenderInDom = function() {
+	if(this.editor.postRenderInDom) {
+		this.editor.postRenderInDom();
+	}
+};
+
+exports.refreshInDom = function(changes) {
+	var t;
+	// Only refresh if a dependency is triggered
+	if(this.dependencies.hasChanged(changes,this.tiddlerTitle)) {
+		// Only refresh if the editor lets us
+		if(this.editor.isRefreshable()) {
+			// Remove the previous children
+			while(this.domNode.hasChildNodes()) {
+				this.domNode.removeChild(this.domNode.firstChild);
+			}
+			// Execute the new children
+			this.execute(this.parents,this.tiddlerTitle);
+			// Render to the DOM
+			for(t=0; t<this.children.length; t++) {
+				this.children[t].renderInDom(this.domNode);
+			}
+		}
+	} else {
+		// Refresh any children
+		for(t=0; t<this.children.length; t++) {
+			this.children[t].refreshInDom(changes);
+		}
+	}
+};
+
+})();