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mirror of https://github.com/koreader/koreader synced 2024-11-02 15:40:16 +00:00
koreader/plugins/hello.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

54 lines
1.4 KiB
Lua

--[[--
This is a debug plugin to test Plugin functionality.
@module koplugin.HelloWorld
--]]--
-- This is a debug plugin, remove the following if block to enable it
if true then
return { disabled = true, }
end
local Dispatcher = require("dispatcher") -- luacheck:ignore
local InfoMessage = require("ui/widget/infomessage")
local UIManager = require("ui/uimanager")
local WidgetContainer = require("ui/widget/container/widgetcontainer")
local _ = require("gettext")
local Hello = WidgetContainer:extend{
name = "hello",
is_doc_only = false,
}
function Hello:onDispatcherRegisterActions()
Dispatcher:registerAction("helloworld_action", {category="none", event="HelloWorld", title=_("Hello World"), general=true,})
end
function Hello:init()
self:onDispatcherRegisterActions()
self.ui.menu:registerToMainMenu(self)
end
function Hello:addToMainMenu(menu_items)
menu_items.hello_world = {
text = _("Hello World"),
-- in which menu this should be appended
sorting_hint = "more_tools",
-- a callback when tapping
callback = function()
UIManager:show(InfoMessage:new{
text = _("Hello, plugin world"),
})
end,
}
end
function Hello:onHelloWorld()
local popup = InfoMessage:new{
text = _("Hello World"),
}
UIManager:show(popup)
end
return Hello