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Commit dbe0ea06 authored by Michael Bai's avatar Michael Bai Committed by Commit Bot
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ContentCapture: re-stream onscreen content when the frame show again 

Previously ContentCaptureConsumer had no way to know the the frame
shows again because the visible content didn't change.

This patch resets the task session when the frame was hidden, so
ContentCapture task will stream on-screen content because they
aren't streamed from the task point of view when the frame was
shown.

Adds the test to coverage this scenario.

Bug: 1137463
Change-Id: I0065ce080101d2149622b0f9f6a3aa196c18d717
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2511030Reviewed-by: default avatarXianzhu Wang <wangxianzhu@chromium.org>
Commit-Queue: Michael Bai <michaelbai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823251}
parent 1798dc24
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Inline Side-by-side
Showing with 64 additions and 8 deletions
android_webview/javatests/src/org/chromium/android_webview/test/AwContentCaptureTest.java
View file @ dbe0ea06
......@@ -769,4 +769,26 @@ public class AwContentCaptureTest {
public void testCantCreateExperimentConsumer() throws Throwable {
Assert.assertNull(ExperimentContentCaptureConsumer.create(mAwContents.getWebContents()));
}
@Test
@SmallTest
@Feature({"AndroidWebView"})
public void testHideAndShow() throws Throwable {
final String response = "<html><head></head><body>"
+ "<div id='editable_id'>Hello</div>"
+ "</div></body></html>";
final String url = mWebServer.setResponse(MAIN_FRAME_FILE, response, null);
runAndVerifyCallbacks(() -> {
loadUrlSync(url);
}, toIntArray(TestAwContentCaptureConsumer.CONTENT_CAPTURED));
// Hides and shows the WebContent and verifies the content is captured again.
runAndVerifyCallbacks(() -> {
TestThreadUtils.runOnUiThreadBlocking(() -> {
// Removes the view and adds it back, this essentially hides and shows the frame.
mRule.getActivity().removeAllViews();
mRule.getActivity().addView(mContainerView);
});
}, toIntArray(TestAwContentCaptureConsumer.CONTENT_CAPTURED));
}
}
third_party/blink/renderer/core/content_capture/content_capture_manager.cc
View file @ dbe0ea06
......@@ -34,6 +34,8 @@ ContentCaptureManager::ContentCaptureManager(LocalFrame& local_frame_root)
ContentCaptureManager::~ContentCaptureManager() = default;
void ContentCaptureManager::ScheduleTaskIfNeeded(const Node& node) {
if (!task_session_)
return;
if (first_node_holder_created_) {
ScheduleTask(
UserActivated(node)
......@@ -58,6 +60,7 @@ bool ContentCaptureManager::UserActivated(const Node& node) const {
void ContentCaptureManager::ScheduleTask(
ContentCaptureTask::ScheduleReason reason) {
DCHECK(task_session_);
if (!content_capture_idle_task_) {
content_capture_idle_task_ = CreateContentCaptureTask();
}
......@@ -69,12 +72,10 @@ ContentCaptureTask* ContentCaptureManager::CreateContentCaptureTask() {
*task_session_);
}
void ContentCaptureManager::NotifyNodeDetached(const Node& node) {
task_session_->OnNodeDetached(node);
}
void ContentCaptureManager::OnLayoutTextWillBeDestroyed(const Node& node) {
NotifyNodeDetached(node);
if (!task_session_)
return;
task_session_->OnNodeDetached(node);
ScheduleTask(
UserActivated(node)
? ContentCaptureTask::ScheduleReason::kUserActivatedContentChange
......@@ -82,6 +83,8 @@ void ContentCaptureManager::OnLayoutTextWillBeDestroyed(const Node& node) {
}
void ContentCaptureManager::OnScrollPositionChanged() {
if (!task_session_)
return;
ScheduleTask(ContentCaptureTask::ScheduleReason::kScrolling);
}
......@@ -101,6 +104,8 @@ void ContentCaptureManager::NotifyInputEvent(WebInputEvent::Type type,
}
void ContentCaptureManager::OnNodeTextChanged(Node& node) {
if (!task_session_)
return;
task_session_->OnNodeChanged(node);
ScheduleTask(
UserActivated(node)
......@@ -115,11 +120,23 @@ void ContentCaptureManager::Trace(Visitor* visitor) const {
visitor->Trace(latest_user_activation_);
}
void ContentCaptureManager::OnFrameWasShown() {
if (task_session_)
return;
task_session_ = MakeGarbageCollected<TaskSession>();
ScheduleTask(ContentCaptureTask::ScheduleReason::kFirstContentChange);
}
void ContentCaptureManager::OnFrameWasHidden() {
Shutdown();
}
void ContentCaptureManager::Shutdown() {
if (content_capture_idle_task_) {
content_capture_idle_task_->Shutdown();
content_capture_idle_task_ = nullptr;
}
task_session_ = nullptr;
}
} // namespace blink
third_party/blink/renderer/core/content_capture/content_capture_manager.h
View file @ dbe0ea06
......@@ -42,6 +42,10 @@ class CORE_EXPORT ContentCaptureManager
// Invokes when text node content was changed.
void OnNodeTextChanged(Node& node);
// Invokes when the LocalFrameRoot was shown/hidden.
void OnFrameWasShown();
void OnFrameWasHidden();
// Invokes when the local_frame_root shutdown.
void Shutdown();
......@@ -66,7 +70,6 @@ class CORE_EXPORT ContentCaptureManager
virtual void Trace(Visitor*) const;
};
void NotifyNodeDetached(const Node& node);
void ScheduleTask(ContentCaptureTask::ScheduleReason reason);
// Returns true if the user had the input in last
......
third_party/blink/renderer/core/content_capture/content_capture_task.cc
View file @ dbe0ea06
......@@ -72,6 +72,7 @@ ContentCaptureTask::~ContentCaptureTask() = default;
void ContentCaptureTask::Shutdown() {
DCHECK(local_frame_root_);
local_frame_root_ = nullptr;
CancelTask();
}
bool ContentCaptureTask::CaptureContent(Vector<cc::NodeInfo>& data) {
......@@ -299,6 +300,10 @@ bool ContentCaptureTask::ShouldPause() {
return ThreadScheduler::Current()->ShouldYieldForHighPriorityWork();
}
void ContentCaptureTask::CancelTask() {
if (delay_task_ && delay_task_->IsActive())
delay_task_->Stop();
}
void ContentCaptureTask::ClearDocumentSessionsForTesting() {
task_session_->ClearDocumentSessionsForTesting();
}
......@@ -310,8 +315,7 @@ base::TimeDelta ContentCaptureTask::GetTaskNextFireIntervalForTesting() const {
}
void ContentCaptureTask::CancelTaskForTesting() {
if (delay_task_ && delay_task_->IsActive())
delay_task_->Stop();
CancelTask();
}
void ContentCaptureTask::Trace(Visitor* visitor) const {
......
third_party/blink/renderer/core/content_capture/content_capture_task.h
View file @ dbe0ea06
......@@ -135,6 +135,8 @@ class CORE_EXPORT ContentCaptureTask
void ScheduleInternal(ScheduleReason reason);
bool CaptureContent(Vector<cc::NodeInfo>& data);
void CancelTask();
// Indicates if there is content change since last run.
bool has_content_change_ = false;
......
third_party/blink/renderer/core/frame/local_frame.cc
View file @ dbe0ea06
......@@ -1837,6 +1837,10 @@ void LocalFrame::WasHidden() {
return;
hidden_ = true;
if (content_capture_manager_) {
content_capture_manager_->OnFrameWasHidden();
}
// An iframe may get a "was hidden" notification before it has been attached
// to the frame tree; in that case, skip further processing.
if (!Owner() || IsProvisional())
......@@ -1874,6 +1878,10 @@ void LocalFrame::WasShown() {
hidden_ = false;
if (LocalFrameView* frame_view = View())
frame_view->ScheduleAnimation();
if (content_capture_manager_) {
content_capture_manager_->OnFrameWasShown();
}
}
bool LocalFrame::ClipsContent() const {
......
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