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Unified Diff: content/browser/wake_lock/wake_lock_service_context.cc

Issue 1107333002: Wake Lock API implementation (Chromium part) (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 3 months ago
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Index: content/browser/wake_lock/wake_lock_service_context.cc
diff --git a/content/browser/wake_lock/wake_lock_service_context.cc b/content/browser/wake_lock/wake_lock_service_context.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a141523299ad24cd807216138cdf77743b147614
--- /dev/null
+++ b/content/browser/wake_lock/wake_lock_service_context.cc
@@ -0,0 +1,100 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/wake_lock/wake_lock_service_context.h"
+
+#include "base/bind.h"
+#include "content/browser/frame_host/frame_tree_node.h"
+#include "content/browser/frame_host/render_frame_host_impl.h"
+#include "content/browser/power_save_blocker_impl.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/power_save_blocker.h"
+#include "content/public/common/service_registry.h"
+
+namespace content {
+
+WakeLockServiceContext::WakeLockServiceContext(WebContents* web_contents)
+ : WebContentsObserver(web_contents),
+ weak_factory_(this) {
+}
+
+WakeLockServiceContext::~WakeLockServiceContext() {
+}
+
+void WakeLockServiceContext::CreateService(
+ int frame_id,
+ mojo::InterfaceRequest<WakeLockService> request) {
+ new WakeLockServiceImpl(weak_factory_.GetWeakPtr(),
+ frame_id,
+ request.Pass());
+}
+
+void WakeLockServiceContext::RenderFrameDeleted(
+ RenderFrameHost* render_frame_host) {
+ CancelWakeLockForRFH(render_frame_host);
+}
+
+void WakeLockServiceContext::RenderFrameHostChanged(RenderFrameHost* old_host,
+ RenderFrameHost* new_host) {
+ CancelWakeLockForRFH(old_host);
+}
+
+void WakeLockServiceContext::RequestWakeLock(int frame_id) {
+ DCHECK_CURRENTLY_ON(BrowserThread::UI);
+ frames_requesting_lock_.insert(frame_id);
+ UpdateWakeLock();
+}
+
+void WakeLockServiceContext::CancelWakeLock(int frame_id) {
+ DCHECK_CURRENTLY_ON(BrowserThread::UI);
+ frames_requesting_lock_.erase(frame_id);
+ UpdateWakeLock();
+}
+
+bool WakeLockServiceContext::HasWakeLockForTests() const {
+ return wake_lock_;
+}
+
+void WakeLockServiceContext::CancelWakeLockForRFH(
+ RenderFrameHost* render_frame_host) {
+ if (!render_frame_host)
+ return;
+
+ RenderFrameHostImpl* rfh_impl =
+ static_cast<RenderFrameHostImpl*>(render_frame_host);
+ CancelWakeLock(rfh_impl->frame_tree_node()->frame_tree_node_id());
+}
+
+void WakeLockServiceContext::CreateWakeLock() {
+ DCHECK(!wake_lock_);
+ wake_lock_ = PowerSaveBlocker::Create(
+ PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep,
+ PowerSaveBlocker::kReasonOther,
+ "Wake Lock API");
+
+ // On Android, additionaly associate the blocker with this WebContents.
+#if defined(OS_ANDROID)
+ DCHECK(web_contents());
+
+ static_cast<PowerSaveBlockerImpl*>(wake_lock_.get())->InitDisplaySleepBlocker(
+ web_contents());
+#endif
+}
+
+void WakeLockServiceContext::RemoveWakeLock() {
+ DCHECK(wake_lock_);
+ wake_lock_.reset();
+}
+
+void WakeLockServiceContext::UpdateWakeLock() {
+ if (!frames_requesting_lock_.empty()) {
+ if (!wake_lock_)
+ CreateWakeLock();
+ } else {
+ if (wake_lock_)
+ RemoveWakeLock();
+ }
+}
+
+} // namespace content

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