let there be typescript

ionic/util/click-block.ts

@@ -0,0 +1,34 @@
+const CSS_CLICK_BLOCK = 'click-block-active';
+const DEFAULT_EXPIRE = 330;
+let cbEle, fallbackTimerId;
+let isShowing = false;
+
+
+function show(expire) {
+  clearTimeout(fallbackTimerId);
+  fallbackTimerId = setTimeout(hide, expire || DEFAULT_EXPIRE);
+
+  if (!isShowing) {
+    isShowing = true;
+    if (cbEle) {
+      cbEle.classList.add(CSS_CLICK_BLOCK);
+
+    } else {
+      cbEle = document.createElement('div');
+      cbEle.className = 'click-block ' + CSS_CLICK_BLOCK;
+      document.body.appendChild(cbEle);
+    }
+  }
+}
+
+function hide() {
+  clearTimeout(fallbackTimerId);
+  if (isShowing) {
+    cbEle.classList.remove(CSS_CLICK_BLOCK);
+    isShowing = false;
+  }
+}
+
+export let ClickBlock = function(shouldShow, expire) {
+  (shouldShow ? show : hide)(expire);
+};