Files
Crosspoint/src/activities/settings/SettingInfo.h
T

287 lines
9.8 KiB
C++

#pragma once
#include <I18n.h>
#include <algorithm>
#include <cassert>
#include <iterator>
#include <string>
#include <vector>
#include "CrossPointSettings.h"
enum class SettingType { TOGGLE, ENUM, ACTION, VALUE, STRING };
enum class SettingAction {
None,
RemapFrontButtons,
CustomiseStatusBar,
ClockSettings,
KOReaderSync,
OPDSBrowser,
Network,
ClearCache,
CheckForUpdates,
Language,
SystemInfo,
DetectTimezone,
SyncTime,
Weather,
Submenu,
};
struct SettingInfo {
StrId nameId;
SettingType type;
uint8_t CrossPointSettings::* valuePtr = nullptr;
// Enum values are used as StrId references for localization via I18N.get().
// If enumLabels is populated, it is authoritative for display and index bounds.
// In that case it must have the same length as enumValues, because consumers
// such as getDisplayValue(), toggleValue(), and CrossPointWebServer::handleGetSettings()
// prefer enumLabels when present. Code paths which validate posted enum values
// should also use enumLabels.size() when enumLabels is non-empty.
std::vector<StrId> enumValues;
std::vector<std::string> enumLabels;
SettingAction action = SettingAction::None;
struct ValueRange {
uint8_t min;
uint8_t max;
uint8_t step;
};
ValueRange valueRange = {};
const char* key = nullptr; // JSON API key (nullptr for ACTION types)
StrId category = StrId::STR_NONE_OPT; // Category for web UI grouping
bool obfuscated = false; // Save/load via base64 obfuscation (passwords)
// Direct char[] string fields (for settings stored in CrossPointSettings)
size_t stringOffset = 0;
size_t stringMaxLen = 0;
// Dynamic accessors (for settings stored outside CrossPointSettings, e.g. KOReaderCredentialStore).
// Function pointers + opaque context avoid the heap allocation of std::function. Stateless
// lambdas pass ctx=nullptr; captures must be hand-written as trampoline functions. See
// DynamicEnumCtx / DynamicStringCtx factories below.
using ValueGetterFn = uint8_t (*)(const void*);
using ValueSetterFn = void (*)(void*, uint8_t);
using StringGetterFn = std::string (*)(void*);
using StringSetterFn = void (*)(void*, const std::string&);
void* accessorCtx = nullptr;
ValueGetterFn valueGetter = nullptr;
ValueSetterFn valueSetter = nullptr;
StringGetterFn stringGetter = nullptr;
StringSetterFn stringSetter = nullptr;
uint8_t callValueGetter() const {
assert(valueGetter && "SettingInfo::callValueGetter requires a non-null valueGetter");
return valueGetter(accessorCtx);
}
void callValueSetter(uint8_t v) const {
assert(valueSetter && "SettingInfo::callValueSetter requires a non-null valueSetter");
valueSetter(accessorCtx, v);
}
std::string callStringGetter() const {
assert(stringGetter && "SettingInfo::callStringGetter requires a non-null stringGetter");
return stringGetter(accessorCtx);
}
void callStringSetter(const std::string& v) const {
assert(stringSetter && "SettingInfo::callStringSetter requires a non-null stringSetter");
stringSetter(accessorCtx, v);
}
struct SubmenuData {
StrId id = StrId::STR_NONE_OPT;
std::vector<SettingInfo> items;
};
static void prepareSubmenus(std::vector<SettingInfo>& items, std::vector<SubmenuData>& submenuData);
SettingInfo& withObfuscated() {
obfuscated = true;
return *this;
}
static SettingInfo Toggle(StrId nameId, uint8_t CrossPointSettings::* ptr, const char* key = nullptr,
StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::TOGGLE;
s.valuePtr = ptr;
s.key = key;
s.category = category;
return s;
}
static SettingInfo Enum(StrId nameId, uint8_t CrossPointSettings::* ptr, std::vector<StrId> values,
const char* key = nullptr, StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::ENUM;
s.valuePtr = ptr;
s.enumValues = std::move(values);
s.key = key;
s.category = category;
return s;
}
static SettingInfo Action(StrId nameId, SettingAction action) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::ACTION;
s.action = action;
return s;
}
static SettingInfo Value(StrId nameId, uint8_t CrossPointSettings::* ptr, const ValueRange valueRange,
const char* key = nullptr, StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::VALUE;
s.valuePtr = ptr;
s.valueRange = valueRange;
s.key = key;
s.category = category;
return s;
}
static SettingInfo String(StrId nameId, char* ptr, size_t maxLen, const char* key = nullptr,
StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::STRING;
s.stringOffset = (size_t)ptr - (size_t)&SETTINGS;
s.stringMaxLen = maxLen;
s.key = key;
s.category = category;
return s;
}
// Stateless variant — getter/setter are free/static functions with no captured state.
static SettingInfo DynamicEnum(StrId nameId, std::vector<StrId> values, ValueGetterFn getter, ValueSetterFn setter,
const char* key = nullptr, StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::ENUM;
s.enumValues = std::move(values);
s.valueGetter = getter;
s.valueSetter = setter;
s.key = key;
s.category = category;
return s;
}
// Context-carrying variant — trampolines receive `ctx` as first argument and cast it back to
// their concrete owner type.
static SettingInfo DynamicEnumCtx(StrId nameId, std::vector<StrId> values, void* ctx, ValueGetterFn getter,
ValueSetterFn setter, const char* key = nullptr,
StrId category = StrId::STR_NONE_OPT) {
SettingInfo s = DynamicEnum(nameId, std::move(values), getter, setter, key, category);
s.accessorCtx = ctx;
return s;
}
static SettingInfo DynamicString(StrId nameId, StringGetterFn getter, StringSetterFn setter,
const char* key = nullptr, StrId category = StrId::STR_NONE_OPT) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::STRING;
s.stringGetter = getter;
s.stringSetter = setter;
s.key = key;
s.category = category;
return s;
}
static SettingInfo DynamicStringCtx(StrId nameId, void* ctx, StringGetterFn getter, StringSetterFn setter,
const char* key = nullptr, StrId category = StrId::STR_NONE_OPT) {
SettingInfo s = DynamicString(nameId, getter, setter, key, category);
s.accessorCtx = ctx;
return s;
}
static SettingInfo Separator(StrId nameId) {
SettingInfo s;
s.nameId = nameId;
s.type = SettingType::ACTION;
s.isSeparator = true;
return s;
}
bool isSeparator = false;
StrId subcategory = StrId::STR_NONE_OPT; // Triggers a separator row on first use and on change
StrId submenu = StrId::STR_NONE_OPT; // Routes item into a submenu; hidden from main list
// Inserts a separator row in the parent tab when this item's subcategory first appears or changes.
SettingInfo& withSubcategory(StrId sub) {
subcategory = sub;
return *this;
}
// Hides this item from the parent tab and places it inside a SettingsSubmenuActivity instead.
// All items sharing the same submenu StrId are grouped under one placeholder entry.
SettingInfo& withSubmenu(StrId sub) {
submenu = sub;
return *this;
}
// For internal use by SettingsActivity: placeholder entry that launches the submenu.
static SettingInfo SubmenuEntry(StrId titleId) {
SettingInfo s;
s.nameId = titleId;
s.type = SettingType::ACTION;
s.action = SettingAction::Submenu;
return s;
}
// Returns the localised title; separators are decorated automatically.
[[nodiscard]] std::string getTitle() const;
// Returns the current display value string (ON/OFF for toggles, enum label, numeric value, >>).
[[nodiscard]] std::string getDisplayValue() const;
// Toggles/cycles the underlying value for TOGGLE, ENUM, and VALUE types.
// Does nothing for ACTION and STRING types (callers handle those separately).
// Marked const because it mutates the external SETTINGS global (via valuePtr),
// not the SettingInfo itself.
void toggleValue() const;
};
inline void SettingInfo::prepareSubmenus(std::vector<SettingInfo>& items,
std::vector<SettingInfo::SubmenuData>& submenuData) {
if (items.empty()) return;
std::vector<SettingInfo> preparedItems;
std::vector<SubmenuData> preparedSubmenus;
preparedItems.reserve(items.size());
for (auto& item : items) {
if (item.submenu == StrId::STR_NONE_OPT) {
preparedItems.push_back(std::move(item));
continue;
}
auto it = std::find_if(preparedSubmenus.begin(), preparedSubmenus.end(),
[&item](const SubmenuData& d) { return d.id == item.submenu; });
if (it == preparedSubmenus.end()) {
preparedItems.push_back(SettingInfo::SubmenuEntry(item.submenu));
preparedSubmenus.push_back({item.submenu, {}});
it = preparedSubmenus.end() - 1;
}
it->items.push_back(std::move(item));
}
items.swap(preparedItems);
for (auto& submenu : preparedSubmenus) {
auto it = std::find_if(submenuData.begin(), submenuData.end(),
[&submenu](const SubmenuData& d) { return d.id == submenu.id; });
if (it == submenuData.end()) {
submenuData.push_back(std::move(submenu));
} else {
it->items.insert(it->items.end(), std::make_move_iterator(submenu.items.begin()),
std::make_move_iterator(submenu.items.end()));
}
}
}