From 2d5d04213123d6488d8dfb6e05f102eb080d2eac Mon Sep 17 00:00:00 2001
From: Leo Horie <leohorie@hotmail.com>
Date: Tue, 5 May 2015 21:16:29 -0400
Subject: [PATCH] allow m.redraw(true) to force-render component

---
 mithril.js             |  7 ++++---
 tests/mithril-tests.js | 26 ++++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/mithril.js b/mithril.js
index d5e55d84..869c114d 100644
--- a/mithril.js
+++ b/mithril.js
@@ -245,7 +245,7 @@ var m = (function app(window, undefined) {
 				var controllerIndex = m.redraw.strategy() == "diff" && cached.views ? cached.views.indexOf(view) : -1
 				var controller = controllerIndex > -1 ? cached.controllers[controllerIndex] : new (data.controller || noop)
 				var key = data && data.attrs && data.attrs.key
-				data = pendingRequests == 0 || (cached && cached.controllers && cached.controllers.indexOf(controller) > -1) ? data.view(controller) : {tag: "placeholder"}
+				data = (pendingRequests == 0 || forcing) || (cached && cached.controllers && cached.controllers.indexOf(controller) > -1) ? data.view(controller) : {tag: "placeholder"}
 				if (data.subtree === "retain") return cached;
 				if (key) {
 					if (!data.attrs) data.attrs = {}
@@ -606,10 +606,11 @@ var m = (function app(window, undefined) {
 			return controllers[index]
 		}
 	};
-	var redrawing = false
+	var redrawing = false, forcing = false
 	m.redraw = function(force) {
 		if (redrawing) return
 		redrawing = true
+		if (force) forcing = true
 		//lastRedrawId is a positive number if a second redraw is requested before the next animation frame
 		//lastRedrawID is null if it's the first redraw and not an event handler
 		if (lastRedrawId && force !== true) {
@@ -624,7 +625,7 @@ var m = (function app(window, undefined) {
 			redraw();
 			lastRedrawId = $requestAnimationFrame(function() {lastRedrawId = null}, FRAME_BUDGET)
 		}
-		redrawing = false
+		redrawing = forcing = false
 	};
 	m.redraw.strategy = m.prop();
 	function redraw() {
diff --git a/tests/mithril-tests.js b/tests/mithril-tests.js
index 436b61f7..cd49fef0 100644
--- a/tests/mithril-tests.js
+++ b/tests/mithril-tests.js
@@ -1339,6 +1339,32 @@ function testMithril(mock) {
 		
 		return initialized === false
 	})
+	test(function() {
+		var root = mock.document.createElement("div")
+		var el
+		var FooPage = {
+			view: function(ctrl) {
+				return m('div', [
+					m('button', {onclick: function() {
+						ctrl.bar = true;
+						m.redraw(true);
+						el = root.childNodes[0].childNodes[1]
+					}}, 'click me'),
+					ctrl.bar ? m.component(BarComponent) : ''
+				]);
+			}
+		};
+		var BarComponent = {
+			view: function() {
+				return m('#bar', 'test');
+			}
+		};
+		m.mount(root, FooPage);
+		
+		root.childNodes[0].childNodes[0].onclick({})
+		
+		return el.id == "bar"
+	})
 	
 	//m.withAttr
 	test(function() {