1 files changed, 100 insertions, 0 deletions
diff --git a/dom/plugins/test/mochitest/test_visibility.html b/dom/plugins/test/mochitest/test_visibility.html
new file mode 100644
index 000000000..943fddaf4
--- /dev/null
+++ b/dom/plugins/test/mochitest/test_visibility.html
@@ -0,0 +1,100 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Test whether windowless plugins receive correct visible/invisible notifications.</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+
+  <style>
+    .hidden { visibility: hidden; }
+  </style>
+
+<body onload="startTest()">
+  <p id="display"></p>
+
+  <script type="application/javascript" src="plugin-utils.js"></script>
+  <script type="application/javascript">
+  SimpleTest.waitForExplicitFinish();
+  SimpleTest.requestFlakyTimeout("untriaged");
+  setTestPluginEnabledState(SpecialPowers.Ci.nsIPluginTag.STATE_ENABLED);
+
+  var didPaint = function() {};
+
+  function startTest() {
+    if (p.getPaintCount() < 1) {
+      setTimeout(startTest, 0);
+      return;
+    }
+
+    didPaint = function() {
+      ok(false, "Plugin should not paint until it is visible!");
+    };
+
+    ok(!p.isVisible(), "Plugin should not be visible.");
+    paintCountIs(p, 0, "Plugin should not have painted.");
+
+    didPaint = part2;
+
+    p.style.visibility = 'visible';
+  }
+
+  function part2() {
+    ok(p.isVisible(), "Plugin should now be visible.");
+    paintCountIs(p, 1, "Plugin should have painted once.");
+
+    didPaint = part3;
+
+    p.setColor('FF0000FF'); // this causes an invalidate/repaint
+  }
+
+  const kTimeout = 5000; // 5 seconds
+  var part4GiveUp;
+  var part4Interval;
+
+  function part3() {
+    ok(p.isVisible(), "Plugin should still be visible.");
+    paintCountIs(p, 2, "Plugin should have painted twice.");
+
+    didPaint = function() {
+      ok(false, "Plugin should not paint when it is invisible.");
+    };
+
+    p.style.visibility = 'hidden';
+
+    part4GiveUp = Date.now() + kTimeout;
+    part4Interval = setInterval(part4, 100);
+  }
+
+  function part4() {
+    if (p.isVisible()) {
+      if (Date.now() < part4GiveUp)
+        return;
+
+      ok(false, "Plugin never became invisible in part4.");
+      SimpleTest.finish();
+      return;
+    }
+
+    clearInterval(part4Interval);
+
+    ok(true, "Plugin became invisible again.");
+    p.setColor('FF00FF00');
+    setTimeout(SimpleTest.finish, 500);
+    // wait to make sure we don't actually paint
+  }
+
+  function inPaint() {
+    // We're actually in the middle of painting the plugin so don't do anything
+    // complex here, for the sake of cases where async plugin painting isn't
+    // enabled yet
+    setTimeout(didPaint, 0);
+    // Don't run that didPaint callback again
+    didPaint = function() {};
+  }
+  </script>
+
+  <embed id="theplugin" class="hidden" type="application/x-test" drawmode="solid" color="FFFF0000" paintscript="inPaint()"></embed>
+  
+  <script type="application/javascript">
+  var p = document.getElementById('theplugin');
+  </script>