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// Copyright 2020 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/core/timing/event_counts.h"
#include "third_party/blink/renderer/platform/wtf/wtf.h"
namespace blink {
class EventCountsIterationSource final
: public PairIterable<AtomicString, unsigned>::IterationSource {
public:
explicit EventCountsIterationSource(const EventCounts& map)
: map_(map), iterator_(map_->Map().begin()) {}
bool Next(ScriptState* script_state,
AtomicString& map_key,
unsigned& map_value,
ExceptionState&) override {
if (iterator_ == map_->Map().end())
return false;
map_key = iterator_->key;
map_value = iterator_->value;
++iterator_;
return true;
}
void Trace(Visitor* visitor) override {
visitor->Trace(map_);
PairIterable<AtomicString, unsigned>::IterationSource::Trace(visitor);
}
private:
// Needs to be kept alive while we're iterating over it.
const Member<const EventCounts> map_;
HashMap<AtomicString, unsigned>::const_iterator iterator_;
};
void EventCounts::Add(const AtomicString& event_type) {
auto iterator = event_count_map_.find(event_type);
DCHECK_NE(iterator, event_count_map_.end());
iterator->value++;
}
EventCounts::EventCounts() {
// Should contain the same types that would return true in
// IsEventTypeForEventTiming() in event_timing.cc. Note that this list differs
// from https://wicg.github.io/event-timing/#sec-events-exposed in that
// dragexit is not present since it's currently not implemented in Chrome.
DCHECK(IsMainThread());
DEFINE_STATIC_LOCAL(
const Vector<AtomicString>, event_types,
({/* MouseEvents */
event_type_names::kAuxclick, event_type_names::kClick,
event_type_names::kContextmenu, event_type_names::kDblclick,
event_type_names::kMousedown, event_type_names::kMouseenter,
event_type_names::kMouseleave, event_type_names::kMouseout,
event_type_names::kMouseover, event_type_names::kMouseup,
/* PointerEvents */
event_type_names::kPointerover, event_type_names::kPointerenter,
event_type_names::kPointerdown, event_type_names::kPointerup,
event_type_names::kPointercancel, event_type_names::kPointerout,
event_type_names::kPointerleave, event_type_names::kGotpointercapture,
event_type_names::kLostpointercapture,
/* TouchEvents */
event_type_names::kTouchstart, event_type_names::kTouchend,
event_type_names::kTouchcancel,
/* KeyboardEvents */
event_type_names::kKeydown, event_type_names::kKeypress,
event_type_names::kKeyup,
/* InputEvents */
event_type_names::kBeforeinput, event_type_names::kInput,
/* CompositionEvents */
event_type_names::kCompositionstart,
event_type_names::kCompositionupdate, event_type_names::kCompositionend,
/* Drag & Drop Events */
event_type_names::kDragstart, event_type_names::kDragend,
event_type_names::kDragenter, event_type_names::kDragleave,
event_type_names::kDragover, event_type_names::kDrop}));
for (const auto& type : event_types) {
event_count_map_.insert(type, 0u);
}
}
PairIterable<AtomicString, unsigned>::IterationSource*
EventCounts::StartIteration(ScriptState*, ExceptionState&) {
return MakeGarbageCollected<EventCountsIterationSource>(*this);
}
bool EventCounts::GetMapEntry(ScriptState*,
const AtomicString& key,
unsigned& value,
ExceptionState&) {
auto it = event_count_map_.find(key);
if (it == event_count_map_.end())
return false;
value = it->value;
return true;
}
} // namespace blink
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