mirror of https://github.com/kepler155c/opus
107 lines
2.4 KiB
Lua
107 lines
2.4 KiB
Lua
local class = require('opus.class')
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local UI = require('opus.ui')
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local Util = require('opus.util')
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UI.DropMenu = class(UI.MenuBar)
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UI.DropMenu.defaults = {
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UIElement = 'DropMenu',
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backgroundColor = 'white',
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buttonClass = 'DropMenuItem',
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}
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function UI.DropMenu:layout()
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UI.MenuBar.layout(self)
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local maxWidth = 1
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for y,child in ipairs(self.children) do
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child.x = 1
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child.y = y
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if #(child.text or '') > maxWidth then
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maxWidth = #child.text
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end
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end
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for _,child in ipairs(self.children) do
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child.width = maxWidth + 2
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if child.spacer then
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child.inactive = true
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child.text = string.rep('-', child.width - 2)
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end
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end
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self.height = #self.children + 1
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self.width = maxWidth + 2
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if self.x + self.width > self.parent.width then
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self.x = self.parent.width - self.width + 1
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end
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self:reposition(self.x, self.y, self.width, self.height)
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end
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function UI.DropMenu:enable()
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local menuBar = self.parent:find(self.menuUid)
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local hasActive
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for _,c in pairs(self.children) do
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if not c.spacer and menuBar then
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c.inactive = not menuBar:getActive(c)
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end
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if not c.inactive then
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hasActive = true
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end
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end
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-- jump through a lot of hoops if all selections are inactive
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-- there's gotta be a better way
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-- lots of exception code just to handle drop menus
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self.focus = not hasActive and function() end
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UI.Window.enable(self)
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if self.focus then
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self:setFocus(self)
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else
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self:focusFirst()
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end
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self:draw()
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end
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function UI.DropMenu:disable()
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UI.Window.disable(self)
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self:remove()
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end
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function UI.DropMenu:eventHandler(event)
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if event.type == 'focus_lost' and self.enabled then
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if not (Util.contains(self.children, event.focused) or event.focused == self) then
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self:disable()
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end
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elseif event.type == 'mouse_out' and self.enabled then
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self:disable()
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self:setFocus(self.parent:find(self.lastFocus))
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else
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return UI.MenuBar.eventHandler(self, event)
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end
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return true
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end
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function UI.DropMenu.example()
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return UI.MenuBar {
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buttons = {
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{ text = 'File', dropdown = {
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{ text = 'Run', event = 'run' },
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{ text = 'Shell s', event = 'shell' },
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{ spacer = true },
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{ text = 'Quit ^q', event = 'quit' },
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} },
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{ text = 'Edit', dropdown = {
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{ text = 'Copy', event = 'run' },
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{ text = 'Paste s', event = 'shell' },
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} },
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{ text = '\187',
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x = -3,
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dropdown = {
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{ text = 'Associations', event = 'associate' },
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} },
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}
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}
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end
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