diff options
Diffstat (limited to 'include/private/SkMessageBus.h')
-rw-r--r-- | include/private/SkMessageBus.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/include/private/SkMessageBus.h b/include/private/SkMessageBus.h index 19e937555d..418235d68e 100644 --- a/include/private/SkMessageBus.h +++ b/include/private/SkMessageBus.h @@ -14,13 +14,17 @@ #include "SkTDArray.h" #include "SkTypes.h" +/** + * Message must implement bool Message::shouldSend(uint32_t inboxID) const. Perhaps someday we + * can use std::experimental::is_detected to avoid this requirement by sending to all inboxes when + * the method is not detected on Message. + */ template <typename Message> class SkMessageBus : SkNoncopyable { public: - // Post a message to be received by Inboxes for this Message type. Threadsafe. - // If id is SK_InvalidUniqueID then it will be sent to all inboxes. - // Otherwise it will be sent to the inbox with that id. - static void Post(const Message& m, uint32_t destID = SK_InvalidUniqueID); + // Post a message to be received by Inboxes for this Message type. Checks + // Message::shouldSend() for each inbox. Threadsafe. + static void Post(const Message& m); class Inbox { public: @@ -102,11 +106,11 @@ template <typename Message> SkMessageBus<Message>::SkMessageBus() {} template <typename Message> -/*static*/ void SkMessageBus<Message>::Post(const Message& m, uint32_t destID) { +/*static*/ void SkMessageBus<Message>::Post(const Message& m) { SkMessageBus<Message>* bus = SkMessageBus<Message>::Get(); SkAutoMutexAcquire lock(bus->fInboxesMutex); for (int i = 0; i < bus->fInboxes.count(); i++) { - if (SK_InvalidUniqueID == destID || bus->fInboxes[i]->fUniqueID == destID) { + if (m.shouldSend(bus->fInboxes[i]->fUniqueID)) { bus->fInboxes[i]->receive(m); } } |