Hyprland/src/protocols/XDGActivation.cpp
Vaxry 1ed1ce9506
internal: new shared_ptr and weak_ptr implementation (#5883)
moves std::shared_ptrs to a new implementation

Advantages:
- you can dereference a weak_ptr directly. This will obviously segfault on a nullptr deref if it's expired.
   - this is useful to avoid the .lock() hell where we are 100% sure the pointer _should_ be valid. (and if it isn't, it should throw.)
- weak_ptrs are still valid while the SP is being destroyed.
   - reasoning: while an object (e.g. CWindow) is being destroyed, its `weak_ptr self` should be accessible (the sp is still alive, and so is CWindow), but it's not because by stl it's already expired (to prevent resurrection)
   - this impl solves it differently. w_p is expired, but can still be dereferenced and used. Creating `s_p`s is not possible anymore, though.
   - this is useful in destructors and callbacks.
2024-05-05 17:16:00 +01:00

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C++

#include "XDGActivation.hpp"
#include "../managers/TokenManager.hpp"
#include "../Compositor.hpp"
#include <algorithm>
#define LOGM PROTO::activation->protoLog
CXDGActivationToken::CXDGActivationToken(SP<CXdgActivationTokenV1> resource_) : resource(resource_) {
if (!resource_->resource())
return;
resource->setDestroy([this](CXdgActivationTokenV1* r) { PROTO::activation->destroyToken(this); });
resource->setOnDestroy([this](CXdgActivationTokenV1* r) { PROTO::activation->destroyToken(this); });
resource->setSetSerial([this](CXdgActivationTokenV1* r, uint32_t serial_, wl_resource* seat) { serial = serial_; });
resource->setSetAppId([this](CXdgActivationTokenV1* r, const char* appid) { appID = appid; });
resource->setCommit([this](CXdgActivationTokenV1* r) {
// TODO: should we send a protocol error of already_used here
// if it was used? the protocol spec doesn't say _when_ it should be sent...
if (committed) {
LOGM(WARN, "possible protocol error, two commits from one token. Ignoring.");
return;
}
committed = true;
// send done with a new token
token = g_pTokenManager->registerNewToken({}, std::chrono::months{12});
LOGM(LOG, "assigned new xdg-activation token {}", token);
resource->sendDone(token.c_str());
});
}
CXDGActivationToken::~CXDGActivationToken() {
if (committed)
g_pTokenManager->removeToken(g_pTokenManager->getToken(token));
}
bool CXDGActivationToken::good() {
return resource->resource();
}
CXDGActivationProtocol::CXDGActivationProtocol(const wl_interface* iface, const int& ver, const std::string& name) : IWaylandProtocol(iface, ver, name) {
;
}
void CXDGActivationProtocol::bindManager(wl_client* client, void* data, uint32_t ver, uint32_t id) {
const auto RESOURCE = m_vManagers.emplace_back(std::make_unique<CXdgActivationV1>(client, ver, id)).get();
RESOURCE->setOnDestroy([this](CXdgActivationV1* p) { this->onManagerResourceDestroy(p->resource()); });
RESOURCE->setDestroy([this](CXdgActivationV1* pMgr) { this->onManagerResourceDestroy(pMgr->resource()); });
RESOURCE->setGetActivationToken([this](CXdgActivationV1* pMgr, uint32_t id) { this->onGetToken(pMgr, id); });
RESOURCE->setActivate([this](CXdgActivationV1* pMgr, const char* token, wl_resource* surface) {
const auto TOKEN = std::find_if(m_vTokens.begin(), m_vTokens.end(), [token](const auto& t) { return t->committed && t->token == token; });
if (TOKEN == m_vTokens.end()) {
LOGM(WARN, "activate event for non-existent token {}??", token);
return;
}
auto xdgToken = TOKEN->get();
if (xdgToken->used) {
LOGM(WARN, "activate event for already used token {}, ignoring", token);
return;
}
xdgToken->used = true;
wlr_surface* surf = wlr_surface_from_resource(surface);
const auto PWINDOW = g_pCompositor->getWindowFromSurface(surf);
if (!PWINDOW) {
LOGM(WARN, "activate event for non-window or gone surface with token {}, ignoring", token);
return;
}
PWINDOW->activate();
});
}
void CXDGActivationProtocol::onManagerResourceDestroy(wl_resource* res) {
std::erase_if(m_vManagers, [&](const auto& other) { return other->resource() == res; });
}
void CXDGActivationProtocol::destroyToken(CXDGActivationToken* token) {
std::erase_if(m_vTokens, [&](const auto& other) { return other.get() == token; });
}
void CXDGActivationProtocol::onGetToken(CXdgActivationV1* pMgr, uint32_t id) {
const auto CLIENT = pMgr->client();
const auto RESOURCE = m_vTokens.emplace_back(std::make_unique<CXDGActivationToken>(makeShared<CXdgActivationTokenV1>(CLIENT, pMgr->version(), id))).get();
if (!RESOURCE->good()) {
pMgr->noMemory();
m_vTokens.pop_back();
return;
}
}