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// 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 "third_party/blink/renderer/platform/scheduler/main_thread/render_widget_signals.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "third_party/blink/public/platform/scheduler/web_render_widget_scheduling_state.h"
namespace blink {
namespace scheduler {
RenderWidgetSignals::RenderWidgetSignals(Observer* observer)
: observer_(observer),
num_visible_render_widgets_(0),
num_visible_render_widgets_with_touch_handlers_(0) {}
std::unique_ptr<WebRenderWidgetSchedulingState>
RenderWidgetSignals::NewRenderWidgetSchedulingState() {
return base::WrapUnique(new WebRenderWidgetSchedulingState(this));
}
void RenderWidgetSignals::IncNumVisibleRenderWidgets() {
num_visible_render_widgets_++;
if (num_visible_render_widgets_ == 1)
observer_->SetAllRenderWidgetsHidden(false);
}
void RenderWidgetSignals::DecNumVisibleRenderWidgets() {
num_visible_render_widgets_--;
DCHECK_GE(num_visible_render_widgets_, 0);
if (num_visible_render_widgets_ == 0)
observer_->SetAllRenderWidgetsHidden(true);
}
void RenderWidgetSignals::IncNumVisibleRenderWidgetsWithTouchHandlers() {
num_visible_render_widgets_with_touch_handlers_++;
if (num_visible_render_widgets_with_touch_handlers_ == 1)
observer_->SetHasVisibleRenderWidgetWithTouchHandler(true);
}
void RenderWidgetSignals::DecNumVisibleRenderWidgetsWithTouchHandlers() {
num_visible_render_widgets_with_touch_handlers_--;
DCHECK_GE(num_visible_render_widgets_with_touch_handlers_, 0);
if (num_visible_render_widgets_with_touch_handlers_ == 0)
observer_->SetHasVisibleRenderWidgetWithTouchHandler(false);
}
void RenderWidgetSignals::AsValueInto(
base::trace_event::TracedValue* state) const {
state->BeginDictionary("renderer_widget_signals");
state->SetInteger("num_visible_render_widgets", num_visible_render_widgets_);
state->SetInteger("num_visible_render_widgets_with_touch_handlers",
num_visible_render_widgets_with_touch_handlers_);
state->EndDictionary();
}
} // namespace scheduler
} // namespace blink
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