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e0fd75b5ab
This caused us to lose our gn check certification. :( Turns out gn check was just ignoring all the header paths it didn't understand and so gn check passing for sky wasn't meaning much. I tried to straighten out some of the mess in this CL, but its going to take several more rounds of massaging before gn check passes again. On the bright side (almost) all of our headers are absolute now. Turns out my script (attached to the bug) didn't notice ../ includes but I'll fix that in the next patch. R=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/746023002
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/engine/config.h"
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#include "sky/engine/core/frame/PlatformEventDispatcher.h"
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#include "sky/engine/core/frame/PlatformEventController.h"
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#include "sky/engine/wtf/TemporaryChange.h"
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namespace blink {
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PlatformEventDispatcher::PlatformEventDispatcher()
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: m_needsPurge(false)
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, m_isDispatching(false)
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{
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}
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PlatformEventDispatcher::~PlatformEventDispatcher()
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{
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}
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void PlatformEventDispatcher::addController(PlatformEventController* controller)
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{
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bool wasEmpty = m_controllers.isEmpty();
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if (!m_controllers.contains(controller))
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m_controllers.append(controller);
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if (wasEmpty)
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startListening();
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}
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void PlatformEventDispatcher::removeController(PlatformEventController* controller)
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{
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// Do not actually remove the controller from the vector, instead zero them out.
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// The zeros are removed in these two cases:
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// 1. either immediately if we are not dispatching any events,
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// 2. or after events to all controllers have dispatched (see notifyControllers()).
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// This is to correctly handle the re-entrancy case when a controller is destroyed
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// while the events are still being dispatched.
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size_t index = m_controllers.find(controller);
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if (index == kNotFound)
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return;
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m_controllers[index] = 0;
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m_needsPurge = true;
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if (!m_isDispatching)
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purgeControllers();
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}
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void PlatformEventDispatcher::purgeControllers()
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{
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ASSERT(m_needsPurge);
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size_t i = 0;
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while (i < m_controllers.size()) {
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if (!m_controllers[i]) {
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m_controllers[i] = m_controllers.last();
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m_controllers.removeLast();
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} else {
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++i;
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}
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}
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m_needsPurge = false;
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if (m_controllers.isEmpty())
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stopListening();
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}
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void PlatformEventDispatcher::notifyControllers()
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{
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{
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TemporaryChange<bool> changeIsDispatching(m_isDispatching, true);
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// Don't notify controllers removed or added during event dispatch.
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size_t size = m_controllers.size();
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for (size_t i = 0; i < size; ++i) {
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if (m_controllers[i])
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m_controllers[i]->didUpdateData();
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}
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}
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if (m_needsPurge)
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purgeControllers();
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}
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} // namespace blink
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