ui overhaul

sys/apis/ui/components/DropMenu.lua

@@ -0,0 +1,71 @@
+local class = require('class')
+local UI    = require('ui')
+local Util  = require('util')
+
+local colors = _G.colors
+
+UI.DropMenu = class(UI.MenuBar)
+UI.DropMenu.defaults = {
+	UIElement = 'DropMenu',
+	backgroundColor = colors.white,
+	buttonClass = 'DropMenuItem',
+}
+function UI.DropMenu:setParent()
+	UI.MenuBar.setParent(self)
+
+	local maxWidth = 1
+	for y,child in ipairs(self.children) do
+		child.x = 1
+		child.y = y
+		if #(child.text or '') > maxWidth then
+			maxWidth = #child.text
+		end
+	end
+	for _,child in ipairs(self.children) do
+		child.width = maxWidth + 2
+		if child.spacer then
+			child.text = string.rep('-', child.width - 2)
+		end
+	end
+
+	self.height = #self.children + 1
+	self.width = maxWidth + 2
+	self.ow = self.width
+
+	self.canvas = self:addLayer()
+end
+
+function UI.DropMenu:enable()
+end
+
+function UI.DropMenu:show(x, y)
+	self.x, self.y = x, y
+	self.canvas:move(x, y)
+	self.canvas:setVisible(true)
+
+	UI.Window.enable(self)
+
+	self:draw()
+	self:capture(self)
+	self:focusFirst()
+end
+
+function UI.DropMenu:hide()
+	self:disable()
+	self.canvas:setVisible(false)
+	self:release(self)
+end
+
+function UI.DropMenu:eventHandler(event)
+	if event.type == 'focus_lost' and self.enabled then
+		if not Util.contains(self.children, event.focused) then
+			self:hide()
+		end
+	elseif event.type == 'mouse_out' and self.enabled then
+		self:hide()
+		self:refocus()
+	else
+		return UI.MenuBar.eventHandler(self, event)
+	end
+	return true
+end