Squashed 'thirdparty/preact/' content from commit b2d90cc

git-subtree-dir: thirdparty/preact
git-subtree-split: b2d90cc116f1d1998f7a7c98dc6986bf4c1841f4

1 files changed, 23 insertions, 0 deletions

diff --git a/src/render-queue.js b/src/render-queue.js
new file mode 100644
index 000000000..ff603611b
--- /dev/null
+++ b/src/render-queue.js
@@ -0,0 +1,23 @@
+import options from './options';
+import { defer } from './util';
+import { renderComponent } from './vdom/component';
+
+/** Managed queue of dirty components to be re-rendered */
+
+// items/itemsOffline swap on each rerender() call (just a simple pool technique)
+let items = [];
+
+export function enqueueRender(component) {
+	if (!component._dirty && (component._dirty = true) && items.push(component)==1) {
+		(options.debounceRendering || defer)(rerender);
+	}
+}
+
+
+export function rerender() {
+	let p, list = items;
+	items = [];
+	while ( (p = list.pop()) ) {
+		if (p._dirty) renderComponent(p);
+	}
+}