1 files changed, 72 insertions, 28 deletions

diff --git a/pkgs/astal/src/widget/launcher.lua b/pkgs/astal/src/widget/launcher.lua
index 66fa4b0..3cd161c 100644
--- a/pkgs/astal/src/widget/launcher.lua
+++ b/pkgs/astal/src/widget/launcher.lua
@@ -8,22 +8,22 @@ local Apps = astal.require("AstalApps")
 local Variable = astal.Variable
 local lib = require("lib")
 
-local MAX_ENTRIES = 20
-local WIDTH = 7
+local WIDTH
+local MAX_ENTRIES
 
 local FlowBox = astalify(Gtk.FlowBox)
 local FlowBoxChild = astalify(Gtk.FlowBoxChild)
 
-local apps = Apps.Apps()
+local apps = Apps.Apps():exact_query("")
+local list = Variable(apps)
 
 local text = Variable("")
-local visible = Variable(false)
-local selection = Variable(1)
+local selection = Variable(0)
 local entry = Variable(nil)
 
-local list = text(function(text)
-	return lib.slice(apps:exact_query(text), 0, MAX_ENTRIES)
-end)
+local function exit()
+	App:quit()
+end
 
 local function on_show()
 	text:set("")
@@ -31,16 +31,10 @@ local function on_show()
 	entry:get():grab_focus()
 end
 
-local function hide()
-	visible:set(false)
-end
-
 local function on_enter()
-	local found = apps:exact_query(text:get())[selection:get() + 1]
-	if found then
-		found:launch()
-		hide()
-	end
+	local app = list:get()[selection:get() + 1]
+	app:launch()
+	exit()
 end
 
 local function update_pos(change_x, change_y)
@@ -48,7 +42,7 @@ local function update_pos(change_x, change_y)
 	local pos_x = (pos % WIDTH) + change_x
 	local pos_y = math.floor(pos / WIDTH) + change_y
 
-	local count = lib.count(list:get())
+	local count = math.min(MAX_ENTRIES, lib.count(list:get()))
 	local height = math.floor((count + WIDTH - 1) / WIDTH)
 
 	pos_x = pos_x % WIDTH
@@ -59,7 +53,7 @@ end
 
 local function on_key_press(_, event)
 	if event.keyval == Gdk.KEY_Escape then
-		hide()
+		exit()
 	elseif event.keyval == Gdk.KEY_Return then
 		on_enter()
 	elseif event.keyval == Gdk.KEY_Left then
@@ -74,6 +68,11 @@ local function on_key_press(_, event)
 end
 
 function Application(app, idx)
+
+	if idx > MAX_ENTRIES then
+		return
+	end
+
 	return FlowBoxChild({
 		Widget.Button({
 			class_name = selection():as(function(c)
@@ -85,7 +84,7 @@ function Application(app, idx)
 			end),
 			on_clicked = function()
 				app:launch()
-				hide()
+				exit()
 			end,
 			Widget.Box({
 				halign = "CENTER",
@@ -106,12 +105,12 @@ function Application(app, idx)
 	})
 end
 
-function Applications(apps)
+function Applications(appl)
 	return FlowBox({
 		hexpand = true,
 		homogeneous = true,
 		class_name = "apps",
-		lib.map(apps, Application)
+		lib.map(appl, Application)
 	})
 end
 
@@ -133,25 +132,70 @@ function Launcher()
 		}),
 		Widget.Box({
 			class_name = "apps",
-			list:as(Applications),
+			list():as(Applications),
 		}),
 	})
 end
 
-return function()
+local function calc_bounds(gdkmonitor)
+	-- constants
+	local font_size = 14
+	local outer_gap = 12
+
+	-- get screen dimensions
+	local screen_width = gdkmonitor.geometry.width
+	local screen_height = gdkmonitor.geometry.height
+
+	-- calculate size of a cell
+	local cell_min_width = 15 * font_size
+	local cell_padding = outer_gap*4
+	local cell_size = cell_min_width + cell_padding
+
+	-- caculate usuable bounds
+	local used_width = 2*5*font_size
+	local used_height = 15*font_size
+	local free_width = screen_width - used_width
+	local free_height = screen_height - used_height
+
+	-- caculate counts
+	local width = math.floor(free_width / cell_size)
+	local height = math.floor(free_height / cell_size)
+
+	WIDTH = width
+	MAX_ENTRIES = width*height
+end
+
+return function(gdkmonitor)
 	local Anchor = astal.require('Astal').WindowAnchor
 
-	Widget.Window({
+	calc_bounds(gdkmonitor)
+
+	-- enable search callback
+	text:subscribe(function(real_query)
+		local query = real_query:lower():match("^%s*(.-)%s*$")
+		if query == "" then
+			list:set(apps)
+			return
+		end
+		local new_list = {}
+		for _, app in pairs(apps) do
+			local name = app.name:lower()
+			if name:find(query) then
+				table.insert(new_list, app)
+			end
+		end
+		list:set(new_list)
+	end)
+
+	return Widget.Window({
 		class_name = "launcher",
+		gdkmonitor = gdkmonitor,
 		anchor = Anchor.TOP + Anchor.BOTTOM + Anchor.LEFT + Anchor.RIGHT,
 		exclusivity = "EXCLUSIVE",
 		keymode = "ON_DEMAND",
 		application = App,
 		on_show = on_show,
 		on_key_press_event = on_key_press,
-		visible = visible(),
 		Launcher(),
 	})
-
-	return visible
 end