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#include "WorkspaceHistoryTracker.hpp"
#include "../../helpers/Monitor.hpp"
#include "../Workspace.hpp"
#include "../state/FocusState.hpp"
#include "../../managers/eventLoop/EventLoopManager.hpp"
#include "../../event/EventBus.hpp"
#include "../../config/ConfigValue.hpp"
#include <hyprutils/utils/ScopeGuard.hpp>
#include <ranges>
using namespace Desktop;
using namespace Desktop::History;
SP<CWorkspaceHistoryTracker> History::workspaceTracker() {
static SP<CWorkspaceHistoryTracker> tracker = makeShared<CWorkspaceHistoryTracker>();
return tracker;
}
CWorkspaceHistoryTracker::CWorkspaceHistoryTracker() {
static auto P = Event::bus()->m_events.workspace.active.listen([this](PHLWORKSPACE workspace) { track(workspace); });
static auto P1 = Event::bus()->m_events.monitor.focused.listen([this](PHLMONITOR mon) {
// This sucks ASS, but we have to do this because switching to a workspace on another mon will trigger a workspace event right afterwards and we don't
// want to remember the workspace that was not visible there
// TODO: do something about this
g_pEventLoopManager->doLater([this, mon = PHLMONITORREF{mon}] {
if (mon)
track(mon->m_activeWorkspace);
});
});
}
void CWorkspaceHistoryTracker::track(PHLWORKSPACE ws) {
if (!ws || !ws->m_monitor)
return;
static auto PALLOWWORKSPACECYCLES = CConfigValue<Config::INTEGER>("binds:allow_workspace_cycles");
if (!m_history.empty() && m_history.front().workspace == ws && !*PALLOWWORKSPACECYCLES)
return;
// Erase from timeline if it exists so we can move it to the very front
std::erase_if(m_history, [&](const auto& entry) { return entry.workspace == ws; });
// Push the newly focused workspace to the top of our MRU list
m_history.push_front(SHistoryEntry{.workspace = ws, .monitor = ws->m_monitor, .name = ws->m_name, .id = ws->m_id});
Hyprutils::Utils::CScopeGuard x([&] { setLastWorkspaceData(ws); });
}
void CWorkspaceHistoryTracker::gc() {
std::vector<PHLMONITORREF> monitorCounts;
std::erase_if(m_history, [&](const auto& entry) {
// Search if the monitor has been seen already
for (auto& mon : monitorCounts | std::views::drop(1)) {
// Remove entry
if (mon == entry.monitor)
return !entry.workspace;
}
// Add monitor to seen monitors
monitorCounts.emplace_back(entry.monitor);
return false;
});
}
const CWorkspaceHistoryTracker::SHistoryEntry CWorkspaceHistoryTracker::previousWorkspace(PHLWORKSPACE ws) {
gc();
auto it = std::ranges::find_if(m_history, [&](const auto& entry) { return entry.workspace == ws; });
// If the workspace is found in history, the previous one is simply the next element down the timeline
if (it != m_history.end() && std::next(it) != m_history.end())
return *std::next(it);
// No prior history found
return SHistoryEntry{.id = WORKSPACE_INVALID};
}
SWorkspaceIDName CWorkspaceHistoryTracker::previousWorkspaceIDName(PHLWORKSPACE ws) {
const auto DATA = previousWorkspace(ws);
if (DATA.id == WORKSPACE_INVALID)
return SWorkspaceIDName{.id = WORKSPACE_INVALID};
return SWorkspaceIDName{.id = DATA.id, .name = DATA.name, .isAutoIDd = DATA.id <= 0};
}
const CWorkspaceHistoryTracker::SHistoryEntry CWorkspaceHistoryTracker::previousWorkspace(PHLWORKSPACE ws, PHLMONITOR restrict) {
if (!restrict)
return previousWorkspace(ws);
gc();
auto it = std::ranges::find_if(m_history, [&](const auto& entry) { return entry.workspace == ws; });
// Start looking from the element immediately following `ws` in the list
if (it != m_history.end())
it++;
else
it = m_history.begin();
// Scan down the timeline until we hit a workspace mapped to the restricted monitor
while (it != m_history.end()) {
if (it->monitor == restrict)
return *it;
it++;
}
// Entry not found
return SHistoryEntry{.id = WORKSPACE_INVALID};
}
SWorkspaceIDName CWorkspaceHistoryTracker::previousWorkspaceIDName(PHLWORKSPACE ws, PHLMONITOR restrict) {
const auto DATA = previousWorkspace(ws, restrict);
if (DATA.id == WORKSPACE_INVALID)
return SWorkspaceIDName{.id = WORKSPACE_INVALID};
return SWorkspaceIDName{.id = DATA.id, .name = DATA.name, .isAutoIDd = DATA.id <= 0};
}
void CWorkspaceHistoryTracker::setLastWorkspaceData(PHLWORKSPACE w) {
if (!w) {
m_lastWorkspaceData = {};
return;
}
m_lastWorkspaceData.workspace = w;
m_lastWorkspaceData.workspaceID = w->m_id;
m_lastWorkspaceData.workspaceName = w->m_name;
m_lastWorkspaceData.monitor = w->m_monitor;
}
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