koreader/frontend/ui/widget/container/topcontainer.lua

--[[--
TopContainer contains its content (1 widget) at the top of its own dimensions
--]]

local WidgetContainer = require("ui/widget/container/widgetcontainer")

local TopContainer = WidgetContainer:extend{}

return TopContainer
Dev docs: some widgets 2017-04-26 14:21:36 +00:00			`--[[--`
add(ui): topcontainer 2016-01-31 22:28:09 +00:00			`TopContainer contains its content (1 widget) at the top of its own dimensions`
			`--]]`
Dev docs: some widgets 2017-04-26 14:21:36 +00:00
			`local WidgetContainer = require("ui/widget/container/widgetcontainer")`

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 00:14:48 +00:00			`local TopContainer = WidgetContainer:extend{}`
add(ui): topcontainer 2016-01-31 22:28:09 +00:00
			`return TopContainer`