1 files changed, 214 insertions, 0 deletions
diff --git a/toolkit/content/tests/browser/browser_bug295977_autoscroll_overflow.js b/toolkit/content/tests/browser/browser_bug295977_autoscroll_overflow.js
new file mode 100644
index 000000000..958afc868
--- /dev/null
+++ b/toolkit/content/tests/browser/browser_bug295977_autoscroll_overflow.js
@@ -0,0 +1,214 @@
+requestLongerTimeout(2);
+add_task(function* ()
+{
+  function pushPref(name, value) {
+    return new Promise(resolve => SpecialPowers.pushPrefEnv({"set": [[name, value]]}, resolve));
+  }
+
+  yield pushPref("general.autoScroll", true);
+
+  const expectScrollNone = 0;
+  const expectScrollVert = 1;
+  const expectScrollHori = 2;
+  const expectScrollBoth = 3;
+
+  var allTests = [
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><body><style type="text/css">div { display: inline-block; }</style>\
+      <div id="a" style="width: 100px; height: 100px; overflow: hidden;"><div style="width: 200px; height: 200px;"></div></div>\
+      <div id="b" style="width: 100px; height: 100px; overflow: auto;"><div style="width: 200px; height: 200px;"></div></div>\
+      <div id="c" style="width: 100px; height: 100px; overflow-x: auto; overflow-y: hidden;"><div style="width: 200px; height: 200px;"></div></div>\
+      <div id="d" style="width: 100px; height: 100px; overflow-y: auto; overflow-x: hidden;"><div style="width: 200px; height: 200px;"></div></div>\
+      <select id="e" style="width: 100px; height: 100px;" multiple="multiple"><option>aaaaaaaaaaaaaaaaaaaaaaaa</option><option>a</option><option>a</option>\
+      <option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option>\
+      <option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option></select>\
+      <select id="f" style="width: 100px; height: 100px;"><option>a</option><option>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</option><option>a</option>\
+      <option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option>\
+      <option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option><option>a</option></select>\
+      <div id="g" style="width: 99px; height: 99px; border: 10px solid black; margin: 10px; overflow: auto;"><div style="width: 100px; height: 100px;"></div></div>\
+      <div id="h" style="width: 100px; height: 100px; overflow: -moz-hidden-unscrollable;"><div style="width: 200px; height: 200px;"></div></div>\
+      <iframe id="iframe" style="display: none;"></iframe>\
+      </body></html>'},
+    {elem: 'a', expected: expectScrollNone},
+    {elem: 'b', expected: expectScrollBoth},
+    {elem: 'c', expected: expectScrollHori},
+    {elem: 'd', expected: expectScrollVert},
+    {elem: 'e', expected: expectScrollVert},
+    {elem: 'f', expected: expectScrollNone},
+    {elem: 'g', expected: expectScrollBoth},
+    {elem: 'h', expected: expectScrollNone},
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><body id="i" style="overflow-y: scroll"><div style="height: 2000px"></div>\
+      <iframe id="iframe" style="display: none;"></iframe>\
+      </body></html>'},
+    {elem: 'i', expected: expectScrollVert}, // bug 695121
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><style>html, body { width: 100%; height: 100%; overflow-x: hidden; overflow-y: scroll; }</style>\
+      <body id="j"><div style="height: 2000px"></div>\
+      <iframe id="iframe" style="display: none;"></iframe>\
+      </body></html>'},
+    {elem: 'j', expected: expectScrollVert},  // bug 914251
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8">\
+<style>\
+body > div {scroll-behavior: smooth;width: 300px;height: 300px;overflow: scroll;}\
+body > div > div {width: 1000px;height: 1000px;}\
+</style>\
+</head><body><div id="t"><div></div></div></body></html>'},
+    {elem: 't', expected: expectScrollBoth}, // bug 1308775
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><body>\
+<div id="k" style="height: 150px;  width: 200px; overflow: scroll; border: 1px solid black;">\
+<iframe style="height: 200px; width: 300px;"></iframe>\
+</div>\
+<div id="l" style="height: 150px;  width: 300px; overflow: scroll; border: 1px dashed black;">\
+<iframe style="height: 200px; width: 200px;" src="data:text/html,<div style=\'border: 5px solid blue; height: 200%; width: 200%;\'></div>"></iframe>\
+</div>\
+<iframe id="m"></iframe>\
+<div style="height: 200%; border: 5px dashed black;">filler to make document overflow: scroll;</div>\
+</body></html>'},
+    {elem: 'k', expected: expectScrollBoth},
+    {elem: 'k', expected: expectScrollNone, testwindow: true},
+    {elem: 'l', expected: expectScrollNone},
+    {elem: 'm', expected: expectScrollVert, testwindow: true},
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><body>\
+<img width="100" height="100" alt="image map" usemap="%23planetmap">\
+<map name="planetmap">\
+  <area id="n" shape="rect" coords="0,0,100,100" href="javascript:void(null)">\
+</map>\
+<a href="javascript:void(null)" id="o" style="width: 100px; height: 100px; border: 1px solid black; display: inline-block; vertical-align: top;">link</a>\
+<input id="p" style="width: 100px; height: 100px; vertical-align: top;">\
+<textarea id="q" style="width: 100px; height: 100px; vertical-align: top;"></textarea>\
+<div style="height: 200%; border: 1px solid black;"></div>\
+</body></html>'},
+    {elem: 'n', expected: expectScrollNone, testwindow: true},
+    {elem: 'o', expected: expectScrollNone, testwindow: true},
+    {elem: 'p', expected: expectScrollVert, testwindow: true, middlemousepastepref: false},
+    {elem: 'q', expected: expectScrollVert, testwindow: true, middlemousepastepref: false},
+    {dataUri: 'data:text/html,<html><head><meta charset="utf-8"></head><body>\
+<input id="r" style="width: 100px; height: 100px; vertical-align: top;">\
+<textarea id="s" style="width: 100px; height: 100px; vertical-align: top;"></textarea>\
+<div style="height: 200%; border: 1px solid black;"></div>\
+</body></html>'},
+    {elem: 'r', expected: expectScrollNone, testwindow: true, middlemousepastepref: true},
+    {elem: 's', expected: expectScrollNone, testwindow: true, middlemousepastepref: true}
+  ];
+
+  for (let test of allTests) {
+    if (test.dataUri) {
+      let loadedPromise = BrowserTestUtils.browserLoaded(gBrowser.selectedBrowser);
+      gBrowser.loadURI(test.dataUri);
+      yield loadedPromise;
+      continue;
+     }
+
+    let prefsChanged = (test.middlemousepastepref == false || test.middlemousepastepref == true);
+    if (prefsChanged) {
+      yield pushPref("middlemouse.paste", test.middlemousepastepref);
+    }
+
+    yield BrowserTestUtils.synthesizeMouse("#" + test.elem, 50, 80, { button: 1 },
+                                           gBrowser.selectedBrowser);
+
+    // This ensures bug 605127 is fixed: pagehide in an unrelated document
+    // should not cancel the autoscroll.
+    yield ContentTask.spawn(gBrowser.selectedBrowser, { }, function* () {
+      var iframe = content.document.getElementById("iframe");
+
+      if (iframe) {
+        var e = new iframe.contentWindow.PageTransitionEvent("pagehide",
+                                                             { bubbles: true,
+                                                               cancelable: true,
+                                                               persisted: false });
+        iframe.contentDocument.dispatchEvent(e);
+        iframe.contentDocument.documentElement.dispatchEvent(e);
+      }
+    });
+
+    is(document.activeElement, gBrowser.selectedBrowser, "Browser still focused after autoscroll started");
+
+    yield BrowserTestUtils.synthesizeMouse("#" + test.elem, 100, 100,
+                                           { type: "mousemove", clickCount: "0" },
+                                           gBrowser.selectedBrowser);
+
+    if (prefsChanged) {
+      yield new Promise(resolve => SpecialPowers.popPrefEnv(resolve));
+    }
+
+    // Start checking for the scroll.
+    let firstTimestamp = undefined;
+    let timeCompensation;
+    do {
+      let timestamp = yield new Promise(resolve => window.requestAnimationFrame(resolve));
+      if (firstTimestamp === undefined) {
+        firstTimestamp = timestamp;
+      }
+
+      // This value is calculated similarly to the value of the same name in
+      // ClickEventHandler.autoscrollLoop, except here it's cumulative across
+      // all frames after the first one instead of being based only on the
+      // current frame.
+      timeCompensation = (timestamp - firstTimestamp) / 20;
+      info("timestamp=" + timestamp + " firstTimestamp=" + firstTimestamp +
+           " timeCompensation=" + timeCompensation);
+
+      // Try to wait until enough time has passed to allow the scroll to happen.
+      // autoscrollLoop incrementally scrolls during each animation frame, but
+      // due to how its calculations work, when a frame is very close to the
+      // previous frame, no scrolling may actually occur during that frame.
+      // After 100ms's worth of frames, timeCompensation will be 1, making it
+      // more likely that the accumulated scroll in autoscrollLoop will be >= 1,
+      // although it also depends on acceleration, which here in this test
+      // should be > 1 due to how it synthesizes mouse events below.
+    } while (timeCompensation < 5);
+
+    // Close the autoscroll popup by synthesizing Esc.
+    EventUtils.synthesizeKey("VK_ESCAPE", {});
+    let scrollVert = test.expected & expectScrollVert;
+    let scrollHori = test.expected & expectScrollHori;
+
+    yield ContentTask.spawn(gBrowser.selectedBrowser,
+                            { scrollVert : scrollVert,
+                              scrollHori: scrollHori,
+                              elemid : test.elem,
+                              checkWindow: test.testwindow },
+      function* (args) {
+        let msg = "";
+        if (args.checkWindow) {
+          if (!((args.scrollVert && content.scrollY > 0) ||
+                (!args.scrollVert && content.scrollY == 0))) {
+            msg += "Failed: ";
+          }
+          msg += 'Window for ' + args.elemid + ' should' + (args.scrollVert ? '' : ' not') + ' have scrolled vertically\n';
+
+          if (!((args.scrollHori && content.scrollX > 0) ||
+                (!args.scrollHori && content.scrollX == 0))) {
+            msg += "Failed: ";
+          }
+          msg += ' Window for ' + args.elemid + ' should' + (args.scrollHori ? '' : ' not') + ' have scrolled horizontally\n';
+        } else {
+          let elem = content.document.getElementById(args.elemid);
+          if (!((args.scrollVert && elem.scrollTop > 0) ||
+                (!args.scrollVert && elem.scrollTop == 0))) {
+            msg += "Failed: ";
+          }
+          msg += ' ' + args.elemid + ' should' + (args.scrollVert ? '' : ' not') + ' have scrolled vertically\n';
+          if (!((args.scrollHori && elem.scrollLeft > 0) ||
+                (!args.scrollHori && elem.scrollLeft == 0))) {
+            msg += "Failed: ";
+          }
+          msg += args.elemid + ' should' + (args.scrollHori ? '' : ' not') + ' have scrolled horizontally';
+        }
+
+        Assert.ok(msg.indexOf("Failed") == -1, msg);
+       }
+    );
+
+    // Before continuing the test, we need to ensure that the IPC
+    // message that stops autoscrolling has had time to arrive.
+    yield new Promise(resolve => executeSoon(resolve));
+  }
+
+  // remove 2 tabs that were opened by middle-click on links
+  while (gBrowser.visibleTabs.length > 1) {
+    gBrowser.removeTab(gBrowser.visibleTabs[gBrowser.visibleTabs.length - 1]);
+  }
+
+  // wait for focus to fix a failure in the next test if the latter runs too soon.
+  yield SimpleTest.promiseFocus();
+});