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Implement non-visible pipeline and iframe visibility methods

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This commit is contained in:
jmr0 2016-03-09 01:24:46 -05:00
parent ce88b8ed30
commit 2bff131535
14 changed files with 382 additions and 24 deletions
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29
components/compositing/compositor.rs
View file

@ -290,6 +290,9 @@ struct PipelineDetails {
/// Whether there are animation callbacks
animation_callbacks_running: bool,
/// Whether this pipeline is visible
visible: bool,
}
impl PipelineDetails {
@ -299,6 +302,7 @@ impl PipelineDetails {
current_epoch: Epoch(0),
animations_running: false,
animation_callbacks_running: false,
visible: true,
}
}
}
@ -760,6 +764,13 @@ impl<Window: WindowMethods> IOCompositor<Window> {
reports_chan.send(reports);
}
(Msg::PipelineVisibilityChanged(pipeline_id, visible), ShutdownState::NotShuttingDown) => {
self.pipeline_details(pipeline_id).visible = visible;
if visible {
self.process_animations();
}
}
(Msg::PipelineExited(pipeline_id, sender), _) => {
debug!("Compositor got pipeline exited: {:?}", pipeline_id);
self.pending_subpages.remove(&pipeline_id);
@ -795,13 +806,16 @@ impl<Window: WindowMethods> IOCompositor<Window> {
animation_state: AnimationState) {
match animation_state {
AnimationState::AnimationsPresent => {
let visible = self.pipeline_details(pipeline_id).visible;
self.pipeline_details(pipeline_id).animations_running = true;
self.composite_if_necessary(CompositingReason::Animation);
if visible {
self.composite_if_necessary(CompositingReason::Animation);
}
}
AnimationState::AnimationCallbacksPresent => {
if !self.pipeline_details(pipeline_id).animation_callbacks_running {
self.pipeline_details(pipeline_id).animation_callbacks_running =
true;
let visible = self.pipeline_details(pipeline_id).visible;
self.pipeline_details(pipeline_id).animation_callbacks_running = true;
if visible {
self.tick_animations_for_pipeline(pipeline_id);
}
}
@ -1712,9 +1726,10 @@ impl<Window: WindowMethods> IOCompositor<Window> {
fn process_animations(&mut self) {
let mut pipeline_ids = vec![];
for (pipeline_id, pipeline_details) in &self.pipeline_details {
if pipeline_details.animations_running ||
pipeline_details.animation_callbacks_running {
pipeline_ids.push(*pipeline_id);
if (pipeline_details.animations_running ||
pipeline_details.animation_callbacks_running) &&
pipeline_details.visible {
pipeline_ids.push(*pipeline_id);
}
}
for pipeline_id in &pipeline_ids {

3
components/compositing/compositor_thread.rs
View file

@ -183,6 +183,8 @@ pub enum Msg {
ResizeTo(Size2D<u32>),
/// Get scroll offset of a layer
GetScrollOffset(PipelineId, LayerId, IpcSender<Point2D<f32>>),
/// Pipeline visibility changed
PipelineVisibilityChanged(PipelineId, bool),
/// A pipeline was shut down.
// This message acts as a synchronization point between the constellation,
// when it shuts down a pipeline, to the compositor; when the compositor
@ -223,6 +225,7 @@ impl Debug for Msg {
Msg::GetClientWindow(..) => write!(f, "GetClientWindow"),
Msg::MoveTo(..) => write!(f, "MoveTo"),
Msg::ResizeTo(..) => write!(f, "ResizeTo"),
Msg::PipelineVisibilityChanged(..) => write!(f, "PipelineVisibilityChanged"),
Msg::PipelineExited(..) => write!(f, "PipelineExited"),
Msg::GetScrollOffset(..) => write!(f, "GetScrollOffset"),
}

47
components/constellation/constellation.rs
View file

@ -407,6 +407,12 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
load_data: LoadData) {
if self.shutting_down { return; }
let parent_visibility = if let Some((parent_pipeline_id, _, _)) = parent_info {
self.pipelines.get(&parent_pipeline_id).map(|pipeline| pipeline.visible)
} else {
None
};
let result = Pipeline::spawn::<Message, LTF, STF>(InitialPipelineState {
id: pipeline_id,
parent_info: parent_info,
@ -427,6 +433,7 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
load_data: load_data,
device_pixel_ratio: self.window_size.device_pixel_ratio,
pipeline_namespace_id: self.next_pipeline_namespace_id(),
parent_visibility: parent_visibility,
webrender_api_sender: self.webrender_api_sender.clone(),
});
@ -710,6 +717,14 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
}
}
}
FromScriptMsg::SetVisible(pipeline_id, visible) => {
debug!("constellation got set visible messsage");
self.handle_set_visible_msg(pipeline_id, visible);
}
FromScriptMsg::VisibilityChangeComplete(pipeline_id, visible) => {
debug!("constellation got set visibility change complete message");
self.handle_visibility_change_complete(pipeline_id, visible);
}
FromScriptMsg::RemoveIFrame(pipeline_id, sender) => {
debug!("constellation got remove iframe message");
self.handle_remove_iframe_msg(pipeline_id);
@ -943,7 +958,8 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
let window_size = self.window_size.visible_viewport;
let root_pipeline_id = PipelineId::new();
debug_assert!(PipelineId::fake_root_pipeline_id() == root_pipeline_id);
self.new_pipeline(root_pipeline_id, None, Some(window_size), None, LoadData::new(url.clone(), None, None));
self.new_pipeline(root_pipeline_id, None, Some(window_size), None,
LoadData::new(url.clone(), None, None));
self.handle_load_start_msg(&root_pipeline_id);
self.push_pending_frame(root_pipeline_id, None);
self.compositor_proxy.send(ToCompositorMsg::ChangePageUrl(root_pipeline_id, url));
@ -1482,6 +1498,35 @@ impl<Message, LTF, STF> Constellation<Message, LTF, STF>
}
}
fn handle_set_visible_msg(&mut self, pipeline_id: PipelineId, visible: bool) {
let frame_id = self.pipeline_to_frame_map.get(&pipeline_id).map(|frame_id| *frame_id);
let child_pipeline_ids: Vec<PipelineId> = self.current_frame_tree_iter(frame_id)
.map(|frame| frame.current)
.collect();
for id in child_pipeline_ids {
if let Some(pipeline) = self.pipelines.get_mut(&id) {
pipeline.change_visibility(visible);
}
}
}
fn handle_visibility_change_complete(&mut self, pipeline_id: PipelineId, visibility: bool) {
let parent_pipeline_info = self.pipelines.get(&pipeline_id).and_then(|source| source.parent_info);
if let Some((parent_pipeline_id, _, _)) = parent_pipeline_info {
let visibility_msg = ConstellationControlMsg::NotifyVisibilityChange(parent_pipeline_id,
pipeline_id,
visibility);
let result = match self.pipelines.get(&parent_pipeline_id) {
None => return warn!("Parent pipeline {:?} closed", parent_pipeline_id),
Some(parent_pipeline) => parent_pipeline.script_chan.send(visibility_msg),
};
if let Err(e) = result {
self.handle_send_error(parent_pipeline_id, e);
}
}
}
fn handle_create_canvas_paint_thread_msg(
&mut self,
size: &Size2D<i32>,

30
components/constellation/pipeline.rs
View file

@ -65,6 +65,9 @@ pub struct Pipeline {
pub running_animations: bool,
pub children: Vec<FrameId>,
pub is_private: bool,
/// Whether this pipeline should be treated as visible for the purposes of scheduling and
/// resource management.
pub visible: bool,
}
/// Initial setup data needed to construct a pipeline.
@ -112,6 +115,8 @@ pub struct InitialPipelineState {
pub load_data: LoadData,
/// The ID of the pipeline namespace for this script thread.
pub pipeline_namespace_id: PipelineNamespaceId,
/// Pipeline visibility is inherited from parent
pub parent_visibility: Option<bool>,
/// Optional webrender api (if enabled).
pub webrender_api_sender: Option<webrender_traits::RenderApiSender>,
}
@ -250,7 +255,10 @@ impl Pipeline {
state.compositor_proxy,
chrome_to_paint_chan,
state.load_data.url,
state.window_size);
state.window_size,
state.parent_visibility.unwrap_or(true));
pipeline.notify_visibility();
Ok((pipeline, child_process))
}
@ -262,7 +270,8 @@ impl Pipeline {
compositor_proxy: Box<CompositorProxy + 'static + Send>,
chrome_to_paint_chan: Sender<ChromeToPaintMsg>,
url: Url,
size: Option<TypedSize2D<PagePx, f32>>)
size: Option<TypedSize2D<PagePx, f32>>,
visible: bool)
-> Pipeline {
Pipeline {
id: id,
@ -277,6 +286,7 @@ impl Pipeline {
size: size,
running_animations: false,
is_private: false,
visible: visible,
}
}
@ -367,6 +377,22 @@ impl Pipeline {
warn!("Sending mozbrowser event to script failed ({}).", e);
}
}
fn notify_visibility(&self) {
self.script_chan.send(ConstellationControlMsg::ChangeFrameVisibilityStatus(self.id, self.visible))
.expect("Pipeline script chan");
self.compositor_proxy.send(CompositorMsg::PipelineVisibilityChanged(self.id, self.visible));
}
pub fn change_visibility(&mut self, visible: bool) {
if visible == self.visible {
return;
}
self.visible = visible;
self.notify_visibility();
}
}
#[derive(Deserialize, Serialize)]

54
components/script/dom/htmliframeelement.rs
View file

@ -11,12 +11,13 @@ use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserElementLocat
use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserElementOpenTabEventDetail;
use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserElementOpenWindowEventDetail;
use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserElementSecurityChangeDetail;
use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserElementVisibilityChangeEventDetail;
use dom::bindings::codegen::Bindings::BrowserElementBinding::BrowserShowModalPromptEventDetail;
use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding;
use dom::bindings::codegen::Bindings::HTMLIFrameElementBinding::HTMLIFrameElementMethods;
use dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
use dom::bindings::conversions::ToJSValConvertible;
use dom::bindings::error::{Error, ErrorResult};
use dom::bindings::error::{Error, ErrorResult, Fallible};
use dom::bindings::global::GlobalRef;
use dom::bindings::inheritance::Castable;
use dom::bindings::js::{Root, LayoutJS};
@ -66,6 +67,7 @@ pub struct HTMLIFrameElement {
subpage_id: Cell<Option<SubpageId>>,
sandbox: Cell<Option<u8>>,
load_blocker: DOMRefCell<Option<LoadBlocker>>,
visibility: Cell<bool>,
}
impl HTMLIFrameElement {
@ -196,6 +198,7 @@ impl HTMLIFrameElement {
subpage_id: Cell::new(None),
sandbox: Cell::new(None),
load_blocker: DOMRefCell::new(None),
visibility: Cell::new(true),
}
}
@ -221,6 +224,26 @@ impl HTMLIFrameElement {
self.pipeline_id.get()
}
pub fn change_visibility_status(&self, visibility: bool) {
if self.visibility.get() != visibility {
self.visibility.set(visibility);
// Visibility changes are only exposed to Mozbrowser iframes
if self.Mozbrowser() {
self.dispatch_mozbrowser_event(MozBrowserEvent::VisibilityChange(visibility));
}
}
}
pub fn set_visible(&self, visible: bool) {
if let Some(pipeline_id) = self.pipeline_id.get() {
let window = window_from_node(self);
let window = window.r();
let msg = ConstellationMsg::SetVisible(pipeline_id, visible);
window.constellation_chan().send(msg).unwrap();
}
}
/// https://html.spec.whatwg.org/multipage/#iframe-load-event-steps steps 1-4
pub fn iframe_load_event_steps(&self, loaded_pipeline: PipelineId) {
// TODO(#9592): assert that the load blocker is present at all times when we
@ -387,6 +410,11 @@ impl MozBrowserEventDetailBuilder for HTMLIFrameElement {
returnValue: Some(DOMString::from(return_value)),
}.to_jsval(cx, rval)
}
MozBrowserEvent::VisibilityChange(visibility) => {
BrowserElementVisibilityChangeEventDetail {
visible: Some(visibility),
}.to_jsval(cx, rval);
}
}
}
}
@ -498,6 +526,30 @@ impl HTMLIFrameElementMethods for HTMLIFrameElement {
}
}
// https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/setVisible
fn SetVisible(&self, visible: bool) -> ErrorResult {
if self.Mozbrowser() {
self.set_visible(visible);
Ok(())
} else {
debug!("this frame is not mozbrowser: mozbrowser attribute missing, or not a top
level window, or mozbrowser preference not set (use --pref dom.mozbrowser.enabled)");
Err(Error::NotSupported)
}
}
// https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/getVisible
fn GetVisible(&self) -> Fallible<bool> {
if self.Mozbrowser() {
Ok(self.visibility.get())
} else {
debug!("this frame is not mozbrowser: mozbrowser attribute missing, or not a top
level window, or mozbrowser preference not set (use --pref dom.mozbrowser.enabled)");
Err(Error::NotSupported)
}
}
// https://developer.mozilla.org/en-US/docs/Web/API/HTMLIFrameElement/stop
fn Stop(&self) -> ErrorResult {
Err(Error::NotSupported)

20
components/script/dom/webidls/BrowserElement.webidl
View file

@ -96,20 +96,24 @@ dictionary BrowserElementOpenWindowEventDetail {
// Element frameElement;
};
dictionary BrowserElementVisibilityChangeEventDetail {
boolean visible;
};
BrowserElement implements BrowserElementCommon;
BrowserElement implements BrowserElementPrivileged;
[NoInterfaceObject]
interface BrowserElementCommon {
//[Throws,
// Pref="dom.mozBrowserFramesEnabled",
// CheckAnyPermissions="browser embed-widgets"]
//void setVisible(boolean visible);
[Throws,
Pref="dom.mozbrowser.enabled",
CheckAnyPermissions="browser embed-widgets"]
void setVisible(boolean visible);
//[Throws,
// Pref="dom.mozBrowserFramesEnabled",
// CheckAnyPermissions="browser embed-widgets"]
//DOMRequest getVisible();
[Throws,
Pref="dom.mozbrowser.enabled",
CheckAnyPermissions="browser embed-widgets"]
boolean getVisible();
//[Throws,
// Pref="dom.mozBrowserFramesEnabled",

8
components/script/dom/window.rs
View file

@ -1477,6 +1477,14 @@ impl Window {
self.timers.suspend();
}
pub fn slow_down_timers(&self) {
self.timers.slow_down();
}
pub fn speed_up_timers(&self) {
self.timers.speed_up();
}
pub fn need_emit_timeline_marker(&self, timeline_type: TimelineMarkerType) -> bool {
let markers = self.devtools_markers.borrow();
markers.contains(&timeline_type)

60
components/script/script_thread.rs
View file

@ -139,6 +139,8 @@ struct InProgressLoad {
clip_rect: Option<Rect<f32>>,
/// Window is frozen (navigated away while loading for example).
is_frozen: bool,
/// Window is visible.
is_visible: bool,
/// The requested URL of the load.
url: Url,
}
@ -157,6 +159,7 @@ impl InProgressLoad {
window_size: window_size,
clip_rect: None,
is_frozen: false,
is_visible: true,
url: url,
}
}
@ -918,6 +921,10 @@ impl ScriptThread {
self.handle_freeze_msg(pipeline_id),
ConstellationControlMsg::Thaw(pipeline_id) =>
self.handle_thaw_msg(pipeline_id),
ConstellationControlMsg::ChangeFrameVisibilityStatus(pipeline_id, visible) =>
self.handle_visibility_change_msg(pipeline_id, visible),
ConstellationControlMsg::NotifyVisibilityChange(containing_id, pipeline_id, visible) =>
self.handle_visibility_change_complete_msg(containing_id, pipeline_id, visible),
ConstellationControlMsg::MozBrowserEvent(parent_pipeline_id,
subpage_id,
event) =>
@ -1217,6 +1224,55 @@ impl ScriptThread {
reports_chan.send(reports);
}
/// To slow/speed up timers and manage any other script thread resource based on visibility.
/// Returns true if successful.
fn alter_resource_utilization(&self, id: PipelineId, visible: bool) -> bool {
if let Some(root_context) = self.browsing_context.get() {
if let Some(ref inner_context) = root_context.find(id) {
let window = inner_context.active_window();
if visible {
window.speed_up_timers();
} else {
window.slow_down_timers();
}
return true;
}
}
false
}
/// Updates iframe element after a change in visibility
fn handle_visibility_change_complete_msg(&self, containing_id: PipelineId, id: PipelineId, visible: bool) {
if let Some(root_context) = self.browsing_context.get() {
if let Some(ref inner_context) = root_context.find(containing_id) {
if let Some(iframe) = inner_context.active_document().find_iframe_by_pipeline(id) {
iframe.change_visibility_status(visible);
}
}
}
}
/// Handle visibility change message
fn handle_visibility_change_msg(&self, id: PipelineId, visible: bool) {
let resources_altered = self.alter_resource_utilization(id, visible);
// Separate message sent since parent script thread could be different (Iframe of different
// domain)
self.constellation_chan.send(ConstellationMsg::VisibilityChangeComplete(id, visible)).unwrap();
if !resources_altered {
let mut loads = self.incomplete_loads.borrow_mut();
if let Some(ref mut load) = loads.iter_mut().find(|load| load.pipeline_id == id) {
load.is_visible = visible;
return;
}
} else {
return;
}
warn!("change visibility message sent to nonexistent pipeline");
}
/// Handles freeze message
fn handle_freeze_msg(&self, id: PipelineId) {
if let Some(root_context) = self.browsing_context.get() {
@ -1692,6 +1748,10 @@ impl ScriptThread {
window.freeze();
}
if !incomplete.is_visible {
self.alter_resource_utilization(browsing_context.pipeline(), false);
}
context_remover.neuter();
document.get_current_parser().unwrap()

38
components/script/timers.rs
View file

@ -22,6 +22,7 @@ use std::cmp::{self, Ord, Ordering};
use std::collections::HashMap;
use std::default::Default;
use std::rc::Rc;
use util::prefs::get_pref;
#[derive(JSTraceable, PartialEq, Eq, Copy, Clone, HeapSizeOf, Hash, PartialOrd, Ord, Debug)]
pub struct OneshotTimerHandle(i32);
@ -209,6 +210,15 @@ impl OneshotTimers {
}
}
pub fn slow_down(&self) {
let duration = get_pref("js.timers.minimum_duration").as_u64().unwrap_or(1000);
self.js_timers.set_min_duration(MsDuration::new(duration));
}
pub fn speed_up(&self) {
self.js_timers.remove_min_duration();
}
pub fn suspend(&self) {
assert!(self.suspended_since.get().is_none());
@ -287,6 +297,8 @@ pub struct JsTimers {
active_timers: DOMRefCell<HashMap<JsTimerHandle, JsTimerEntry>>,
/// The nesting level of the currently executing timer task or 0.
nesting_level: Cell<u32>,
/// Used to introduce a minimum delay in event intervals
min_duration: Cell<Option<MsDuration>>,
}
#[derive(JSTraceable, HeapSizeOf)]
@ -341,6 +353,7 @@ impl JsTimers {
next_timer_handle: Cell::new(JsTimerHandle(1)),
active_timers: DOMRefCell::new(HashMap::new()),
nesting_level: Cell::new(0),
min_duration: Cell::new(None),
}
}
@ -404,6 +417,24 @@ impl JsTimers {
}
}
pub fn set_min_duration(&self, duration: MsDuration) {
self.min_duration.set(Some(duration));
}
pub fn remove_min_duration(&self) {
self.min_duration.set(None);
}
// see step 13 of https://html.spec.whatwg.org/multipage/#timer-initialisation-steps
fn user_agent_pad(&self, current_duration: MsDuration) -> MsDuration {
match self.min_duration.get() {
Some(min_duration) => {
cmp::max(min_duration, current_duration)
},
None => current_duration
}
}
// see https://html.spec.whatwg.org/multipage/#timer-initialisation-steps
fn initialize_and_schedule(&self, global: GlobalRef, mut task: JsTimerTask) {
let handle = task.handle;
@ -412,13 +443,12 @@ impl JsTimers {
// step 6
let nesting_level = self.nesting_level.get();
// step 7
let duration = clamp_duration(nesting_level, task.duration);
// step 7, 13
let duration = self.user_agent_pad(clamp_duration(nesting_level, task.duration));
// step 8, 9
task.nesting_level = nesting_level + 1;
// essentially step 11-14
// essentially step 11, 12, and 14
let callback = OneshotTimerCallback::JsTimer(task);
let oneshot_handle = global.schedule_callback(callback, duration);

9
components/script_traits/lib.rs
View file

@ -133,6 +133,10 @@ pub enum ConstellationControlMsg {
Freeze(PipelineId),
/// Notifies script thread to resume all its timers
Thaw(PipelineId),
/// Notifies script thread whether frame is visible
ChangeFrameVisibilityStatus(PipelineId, bool),
/// Notifies script thread that frame visibility change is complete
NotifyVisibilityChange(PipelineId, PipelineId, bool),
/// Notifies script thread that a url should be loaded in this iframe.
Navigate(PipelineId, SubpageId, LoadData),
/// Requests the script thread forward a mozbrowser event to an iframe it owns
@ -421,6 +425,8 @@ pub enum MozBrowserEvent {
UsernameAndPasswordRequired,
/// Sent when a link to a search engine is found.
OpenSearch,
/// Sent when visibility state changes.
VisibilityChange(bool),
}
impl MozBrowserEvent {
@ -442,7 +448,8 @@ impl MozBrowserEvent {
MozBrowserEvent::ShowModalPrompt(_, _, _, _) => "mozbrowsershowmodalprompt",
MozBrowserEvent::TitleChange(_) => "mozbrowsertitlechange",
MozBrowserEvent::UsernameAndPasswordRequired => "mozbrowserusernameandpasswordrequired",
MozBrowserEvent::OpenSearch => "mozbrowseropensearch"
MozBrowserEvent::OpenSearch => "mozbrowseropensearch",
MozBrowserEvent::VisibilityChange(_) => "mozbrowservisibilitychange",
}
}
}

4
components/script_traits/script_msg.rs
View file

@ -81,6 +81,10 @@ pub enum ScriptMsg {
NodeStatus(Option<String>),
/// Notification that this iframe should be removed.
RemoveIFrame(PipelineId, Option<IpcSender<()>>),
/// Change pipeline visibility
SetVisible(PipelineId, bool),
/// Notifies constellation that an iframe's visibility has been changed.
VisibilityChangeComplete(PipelineId, bool),
/// A load has been requested in an IFrame.
ScriptLoadedURLInIFrame(IFrameLoadInfo),
/// Requests that the constellation set the contents of the clipboard

6
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -6538,6 +6538,12 @@
"url": "/_mozilla/mozilla/mozbrowser/iframe_reload_twice.html"
}
],
"mozilla/mozbrowser/iframe_visibility.html": [
{
"path": "mozilla/mozbrowser/iframe_visibility.html",
"url": "/_mozilla/mozilla/mozbrowser/iframe_visibility.html"
}
],
"mozilla/mozbrowser/mozbrowser_click_fires_openwindow.html": [
{
"path": "mozilla/mozbrowser/mozbrowser_click_fires_openwindow.html",

6
tests/wpt/mozilla/tests/mozilla/mozbrowser/helper.html Normal file
View file

@ -0,0 +1,6 @@
<!doctype html>
<html>
<body>
<p>test</p>
</body>
</html>

92
tests/wpt/mozilla/tests/mozilla/mozbrowser/iframe_visibility.html Normal file
View file

@ -0,0 +1,92 @@
<!doctype html>
<meta charset="utf-8">
<head>
<title>Iframe visibility tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
async_test(function(t) {
var expectedVisibilities = [false, true];
var receivedVisibilities = [];
var iframe = document.createElement("iframe");
iframe.mozbrowser = true;
iframe.src = "helper.html";
//Alternate the iframe's visibility and fire mozbrowservisibilitychange
iframe.onload = t.step_func(function() {
iframe.setVisible(false);
iframe.setVisible(true);
});
iframe.addEventListener("mozbrowservisibilitychange", t.step_func(e => {
assert_equals(iframe.getVisible(), e.detail.visible);
receivedVisibilities.push(e.detail.visible);
if (receivedVisibilities.length == expectedVisibilities.length) {
assert_array_equals(receivedVisibilities, expectedVisibilities);
t.done();
}
}));
document.body.appendChild(iframe);
}, "Iframe visibility setter/getter");
async_test(function(t) {
var iframe = document.createElement("iframe");
iframe.mozbrowser = true;
iframe.src = "helper.html";
var start = null;
document.body.appendChild(iframe);
iframe.onload = t.step_func(function() {
var element = iframe.contentWindow.document.querySelector("p");
var animationCompletesAfterResumingVisibility = false;
var nonVisibleAnimationStopped = false;
element.style.position = 'relative';
element.style.right = "0px";
var step = t.step_func(function(timestamp) {
if (!start) start = timestamp;
var progress = timestamp - start;
element.style.right = Math.min(progress/5, 100) + "px";
if (progress < 500) {
iframe.contentWindow.requestAnimationFrame(step);
}
});
iframe.setVisible(false);
iframe.contentWindow.setTimeout(t.step_func(function(){
nonVisibleAnimationStopped = element.style.right === '0px';
iframe.setVisible(true);
}),1000);
iframe.contentWindow.setTimeout(t.step_func(function(){
animationCompletesAfterResumingVisibility = element.style.right === '100px';
assert_true(nonVisibleAnimationStopped);
assert_true(animationCompletesAfterResumingVisibility);
t.done();
}),2000);
iframe.contentWindow.requestAnimationFrame(step);
});
}, 'Requesting animation frame composites only when frame is visible');
async_test(function(t) {
var iframe = document.createElement("iframe");
iframe.src = "http://web-platform.test:8000/common/blank.html";
iframe.mozbrowser = true;
iframe.onload = t.step_func(function() {
iframe.addEventListener("mozbrowservisibilitychange", t.step_func(function() {
var startTime = Date.now();
iframe.contentWindow.setTimeout(t.step_func(function() {
assert_true(Date.now() - startTime >= 1000);
t.done();
}), 1);
}));
iframe.setVisible(false);
});
document.body.appendChild(iframe);
}, 'Minimum setTimeout of 1s when pipeline is invisible');
</script>
</body>