custom help files + redo System UI

sys/apps/system/aliases.lua

@@ -0,0 +1,66 @@
+local Config = require('config')
+local UI     = require('ui')
+
+local aliasTab = UI.Window {
+	tabTitle = 'Aliases',
+	description = 'Shell aliases',
+	alias = UI.TextEntry {
+		x = 2, y = 2, ex = -2,
+		limit = 32,
+		shadowText = 'Alias',
+	},
+	path = UI.TextEntry {
+		y = 3, x = 2, ex = -2,
+		limit = 256,
+		shadowText = 'Program path',
+		accelerators = {
+			enter = 'new_alias',
+		},
+	},
+	grid = UI.Grid {
+		y = 5,
+		sortColumn = 'alias',
+		columns = {
+			{ heading = 'Alias',   key = 'alias' },
+			{ heading = 'Program', key = 'path'  },
+		},
+		accelerators = {
+			delete = 'delete_alias',
+		},
+	},
+}
+
+function aliasTab.grid:draw()
+	self.values = { }
+	local env = Config.load('shell')
+	for k,v in pairs(env.aliases) do
+		table.insert(self.values, { alias = k, path = v })
+	end
+	self:update()
+	UI.Grid.draw(self)
+end
+
+function aliasTab:eventHandler(event)
+	if event.type == 'delete_alias' then
+		local env = Config.load('shell')
+		env.aliases[self.grid:getSelected().alias] = nil
+		self.grid:setIndex(self.grid:getIndex())
+		self.grid:draw()
+		Config.update('shell', env)
+		self:emit({ type = 'success_message', message = 'reboot to take effect' })
+		return true
+
+	elseif event.type == 'new_alias' then
+		local env = Config.load('shell')
+		env.aliases[self.alias.value] = self.path.value
+		self.alias:reset()
+		self.path:reset()
+		self:draw()
+		self:setFocus(self.alias)
+		Config.update('shell', env)
+		self:emit({ type = 'success_message', message = 'reboot to take effect' })
+		return true
+	end
+end
+
+return aliasTab