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-rw-r--r--layout/reftests/position-dynamic-changes/vertical/animate.js59
1 files changed, 59 insertions, 0 deletions
diff --git a/layout/reftests/position-dynamic-changes/vertical/animate.js b/layout/reftests/position-dynamic-changes/vertical/animate.js
new file mode 100644
index 0000000000..a53d6a1800
--- /dev/null
+++ b/layout/reftests/position-dynamic-changes/vertical/animate.js
@@ -0,0 +1,59 @@
+var currentOffset = null;
+var maxOffset = null;
+var property = "top";
+
+var rfa = null;
+if (window.requestAnimationFrame) {
+ rfa = requestAnimationFrame;
+} else if (window.webkitRequestAnimationFrame) {
+ rfa = webkitRequestAnimationFrame;
+} else if (window.msRequestAnimationFrame) {
+ rfa = msRequestAnimationFrame;
+} else if (window.oRequestAnimationFrame) {
+ rfa = oRequestAnimationFrame;
+}
+
+function animate(from, to, prop) {
+ currentOffset = from;
+ maxOffset = to;
+ if (prop) {
+ property = prop;
+ }
+ rfa(animateStep);
+}
+
+function animateStep() {
+ if (currentOffset <= maxOffset) {
+ document.getElementById("child").style[property] = currentOffset + "px";
+ currentOffset += 10;
+ rfa(animateStep);
+ } else {
+ document.documentElement.removeAttribute("class");
+ }
+}
+
+function toAuto(prop) {
+ if (prop) {
+ property = prop;
+ }
+ rfa(setToAuto);
+}
+
+function setToAuto() {
+ document.getElementById("child").style[property] = "auto";
+ document.documentElement.removeAttribute("class");
+}
+
+function fromAuto(to, prop) {
+ maxOffset = to;
+ if (prop) {
+ property = prop;
+ }
+ rfa(setFromAuto);
+}
+
+function setFromAuto() {
+ document.getElementById("child").style[property] = maxOffset + "px";
+ document.documentElement.removeAttribute("class");
+}
+