Squashed '.config/waywall/waywork/' content from commit f0b8424

git-subtree-dir: .config/waywall/waywork
git-subtree-split: f0b84240c63f4a13d6a8cb54a037424d5d64329a

1 files changed, 103 insertions, 0 deletions

diff --git a/modes.lua b/modes.lua
new file mode 100644
index 0000000..3bf0047
--- /dev/null
+++ b/modes.lua
@@ -0,0 +1,103 @@
+local modes = {}
+
+--- ModeManager orchestrates resolution toggles and on_enter/on_exit hooks.
+local ModeManager = {}
+ModeManager.__index = ModeManager
+
+function ModeManager.new(waywall)
+	return setmetatable({ ww = waywall, active = nil, defs = {} }, ModeManager)
+end
+
+--- def: { width, height, on_enter=function(), on_exit=function(), toggle_guard=function()->bool }
+function ModeManager:define(name, def)
+	self.defs[name] = def
+end
+
+local function active_res(ww)
+	local w, h = ww.active_res()
+	return tonumber(w), tonumber(h)
+end
+
+--- Get the mode definition by name, erroring if not found.
+--- @param name string
+function ModeManager:_get_def(name)
+	assert(self.defs[name], "No such mode: " .. tostring(name))
+	return self.defs[name]
+end
+
+--- Transition to a mode by name, turning off any previously active mode.
+--- If name is nil, turn off any active mode.
+--- This does not check toggle_guard.
+--- @param name string?
+function ModeManager:_transition_to(name)
+	local function exit_active()
+		if self.active then
+			local prev = self:_get_def(self.active)
+			self.ww.set_resolution(0, 0)
+			if prev.on_exit then
+				prev.on_exit()
+			end
+			self.active = nil
+		end
+	end
+
+	local function enter_mode(_name)
+		if _name then
+			local new = self:_get_def(_name)
+			self.ww.set_resolution(new.width, new.height)
+			if new.on_enter then
+				new.on_enter()
+			end
+			self.active = _name
+		end
+	end
+
+	if name == nil then
+		exit_active()
+		return
+	end
+	if name == self.active then
+		-- already active, do nothing
+		return
+	end
+	exit_active()
+	enter_mode(name)
+end
+
+--- Toggle a mode by name. If it's active, turn it off. If it's inactive, turn it on.
+--- If the mode has a toggle_guard and it returns false, do nothing and return false.
+--- @param name string
+--- @return boolean|nil
+function ModeManager:toggle(name)
+	local ww, def = self.ww, self.defs[name]
+	if not def then
+		return
+	end
+	if def.toggle_guard and def.toggle_guard() == false then
+		return false
+	end
+	-- local w, h = active_res(ww)
+	-- if w == def.width and h == def.height then
+	-- 	ww.set_resolution(0, 0)
+	-- 	if def.on_exit then
+	-- 		def.on_exit()
+	-- 	end
+	-- 	self.active = nil
+	-- else
+	-- 	ww.set_resolution(def.width, def.height)
+	-- 	if def.on_enter then
+	-- 		def.on_enter()
+	-- 	end
+	-- 	-- exit previous if different
+	-- 	self.active = name
+	-- end
+
+	if name == self.active then
+		self:_transition_to(nil)
+	else
+		self:_transition_to(name)
+	end
+end
+
+modes.ModeManager = ModeManager
+return modes