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mirror of https://github.com/koreader/koreader synced 2024-11-18 03:25:46 +00:00
koreader/plugins/keepalive.koplugin/main.lua
NiLuJe fadee1f5dc
Clarify our OOP semantics across the codebase (#9586)
Basically:

* Use `extend` for class definitions
* Use `new` for object instantiations

That includes some minor code cleanups along the way:

* Updated `Widget`'s docs to make the semantics clearer.
* Removed `should_restrict_JIT` (it's been dead code since https://github.com/koreader/android-luajit-launcher/pull/283)
* Minor refactoring of LuaSettings/LuaData/LuaDefaults/DocSettings to behave (mostly, they are instantiated via `open` instead of `new`) like everything else and handle inheritance properly (i.e., DocSettings is now a proper LuaSettings subclass).
* Default to `WidgetContainer` instead of `InputContainer` for stuff that doesn't actually setup key/gesture events.
* Ditto for explicit `*Listener` only classes, make sure they're based on `EventListener` instead of something uselessly fancier.
* Unless absolutely necessary, do not store references in class objects, ever; only values. Instead, always store references in instances, to avoid both sneaky inheritance issues, and sneaky GC pinning of stale references.
  * ReaderUI: Fix one such issue with its `active_widgets` array, with critical implications, as it essentially pinned *all* of ReaderUI's modules, including their reference to the `Document` instance (i.e., that was a big-ass leak).
* Terminal: Make sure the shell is killed on plugin teardown.
* InputText: Fix Home/End/Del physical keys to behave sensibly.
* InputContainer/WidgetContainer: If necessary, compute self.dimen at paintTo time (previously, only InputContainers did, which might have had something to do with random widgets unconcerned about input using it as a baseclass instead of WidgetContainer...).
* OverlapGroup: Compute self.dimen at *init* time, because for some reason it needs to do that, but do it directly in OverlapGroup instead of going through a weird WidgetContainer method that it was the sole user of.
* ReaderCropping: Under no circumstances should a Document instance member (here, self.bbox) risk being `nil`ed!
* Kobo: Minor code cleanups.
2022-10-06 02:14:48 +02:00

75 lines
2.2 KiB
Lua

local ConfirmBox = require("ui/widget/confirmbox")
local Device = require("device")
local PluginShare = require("pluginshare")
local UIManager = require("ui/uimanager")
local WidgetContainer = require("ui/widget/container/widgetcontainer")
local _ = require("gettext")
local menuItem = {
text = _("Keep alive"),
checked_func = function() return PluginShare.keepalive end,
}
local disable
local enable
local function showConfirmBox()
UIManager:show(ConfirmBox:new{
text = _("The system won't sleep while this message is showing.\n\nPress \"Stay alive\" if you prefer to keep the system on even after closing this notification. *This will drain the battery*.\n\nIf KOReader terminates before \"Close\" is pressed, please start and close the KeepAlive plugin again to ensure settings are reset."),
cancel_text = _("Close"),
cancel_callback = function()
disable()
PluginShare.keepalive = false
end,
ok_text = _("Stay alive"),
ok_callback = function()
PluginShare.keepalive = true
end,
})
end
if Device:isCervantes() or Device:isKobo() then
enable = function() PluginShare.pause_auto_suspend = true end
disable = function() PluginShare.pause_auto_suspend = false end
elseif Device:isKindle() then
disable = function()
os.execute("lipc-set-prop com.lab126.powerd preventScreenSaver 0")
end
enable = function()
os.execute("lipc-set-prop com.lab126.powerd preventScreenSaver 1")
end
elseif Device:isSDL() then
local InfoMessage = require("ui/widget/infomessage")
disable = function()
UIManager:show(InfoMessage:new{
text = _("This is a dummy implementation of 'disable' function.")
})
end
enable = function()
UIManager:show(InfoMessage:new{
text = _("This is a dummy implementation of 'enable' function.")
})
end
else
return { disabled = true, }
end
menuItem.callback = function()
enable()
showConfirmBox()
end
local KeepAlive = WidgetContainer:extend{
name = "keepalive",
}
function KeepAlive:init()
self.ui.menu:registerToMainMenu(self)
end
function KeepAlive:addToMainMenu(menu_items)
menu_items.keep_alive = menuItem
end
return KeepAlive