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ee93b0b6b6
Depends on D145773 Differential Revision: https://phabricator.services.mozilla.com/D145774
168 lines
5.4 KiB
C++
168 lines
5.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/XRInputSourceArray.h"
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#include "mozilla/dom/XRSession.h"
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#include "mozilla/dom/XRInputSourcesChangeEvent.h"
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#include "VRDisplayClient.h"
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namespace mozilla::dom {
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(XRInputSourceArray, mParent,
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mInputSources)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(XRInputSourceArray)
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NS_IMPL_CYCLE_COLLECTING_RELEASE(XRInputSourceArray)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(XRInputSourceArray)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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XRInputSourceArray::XRInputSourceArray(nsISupports* aParent)
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: mParent(aParent) {}
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JSObject* XRInputSourceArray::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return XRInputSourceArray_Binding::Wrap(aCx, this, aGivenProto);
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}
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void XRInputSourceArray::Update(XRSession* aSession) {
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MOZ_ASSERT(aSession);
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gfx::VRDisplayClient* displayClient = aSession->GetDisplayClient();
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if (!displayClient) {
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return;
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}
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XRInputSourcesChangeEventInit addInit;
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nsTArray<RefPtr<XRInputSource>> removedInputs;
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if (NS_WARN_IF(!addInit.mAdded.SetCapacity(gfx::kVRControllerMaxCount,
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mozilla::fallible))) {
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MOZ_ASSERT(false,
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"'add' sequence in XRInputSourcesChangeEventInit SetCapacity() "
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"failed.");
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return;
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}
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for (int32_t i = 0; i < gfx::kVRControllerMaxCount; ++i) {
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const gfx::VRControllerState& controllerState =
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displayClient->GetDisplayInfo().mControllerState[i];
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if (controllerState.controllerName[0] == '\0') {
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// Checking if exising controllers need to be removed.
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for (auto& input : mInputSources) {
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if (input->GetIndex() == i) {
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removedInputs.AppendElement(input);
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break;
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}
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}
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continue;
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}
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bool found = false;
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RefPtr<XRInputSource> inputSource = nullptr;
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for (auto& input : mInputSources) {
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if (input->GetIndex() == i) {
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found = true;
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inputSource = input;
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break;
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}
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}
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// Checking if it is added before.
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if (!found &&
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(controllerState.numButtons > 0 || controllerState.numAxes > 0)) {
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inputSource = new XRInputSource(mParent);
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inputSource->Setup(aSession, i);
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mInputSources.AppendElement(inputSource);
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addInit.mBubbles = false;
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addInit.mCancelable = false;
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addInit.mSession = aSession;
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if (!addInit.mAdded.AppendElement(*inputSource, mozilla::fallible)) {
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MOZ_ASSERT(false,
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"'add' sequence in XRInputSourcesChangeEventInit "
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"AppendElement() failed, it might be due to the"
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"wrong size when SetCapacity().");
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}
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}
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// If added, updating the current controller states.
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if (inputSource) {
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inputSource->Update(aSession);
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}
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}
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// Send `inputsourceschange` for new controllers.
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if (addInit.mAdded.Length()) {
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RefPtr<XRInputSourcesChangeEvent> event =
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XRInputSourcesChangeEvent::Constructor(
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aSession, u"inputsourceschange"_ns, addInit);
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event->SetTrusted(true);
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aSession->DispatchEvent(*event);
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}
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// If there's a controller is removed, dispatch `inputsourceschange`.
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if (removedInputs.Length()) {
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DispatchInputSourceRemovedEvent(removedInputs, aSession);
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}
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for (auto& input : removedInputs) {
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mInputSources.RemoveElement(input);
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}
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}
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void XRInputSourceArray::DispatchInputSourceRemovedEvent(
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const nsTArray<RefPtr<XRInputSource>>& aInputs, XRSession* aSession) {
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if (!aSession) {
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return;
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}
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XRInputSourcesChangeEventInit init;
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if (NS_WARN_IF(
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!init.mRemoved.SetCapacity(aInputs.Length(), mozilla::fallible))) {
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MOZ_ASSERT(false,
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"'removed' sequence in XRInputSourcesChangeEventInit "
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"SetCapacity() failed.");
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return;
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}
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for (const auto& input : aInputs) {
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input->SetGamepadIsConnected(false, aSession);
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init.mBubbles = false;
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init.mCancelable = false;
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init.mSession = aSession;
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if (!init.mRemoved.AppendElement(*input, mozilla::fallible)) {
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MOZ_ASSERT(false,
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"'removed' sequence in XRInputSourcesChangeEventInit "
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"AppendElement() failed, it might be due to the"
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"wrong size when SetCapacity().");
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}
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}
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if (init.mRemoved.Length()) {
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RefPtr<XRInputSourcesChangeEvent> event =
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XRInputSourcesChangeEvent::Constructor(aSession,
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u"inputsourceschange"_ns, init);
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event->SetTrusted(true);
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aSession->DispatchEvent(*event);
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}
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}
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void XRInputSourceArray::Clear(XRSession* aSession) {
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DispatchInputSourceRemovedEvent(mInputSources, aSession);
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mInputSources.Clear();
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}
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uint32_t XRInputSourceArray::Length() { return mInputSources.Length(); }
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XRInputSource* XRInputSourceArray::IndexedGetter(uint32_t aIndex,
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bool& aFound) {
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aFound = aIndex < mInputSources.Length();
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if (!aFound) {
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return nullptr;
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}
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return mInputSources[aIndex];
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}
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} // namespace mozilla::dom
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