canvas overhaul

sys/apps/fileui.lua

@@ -0,0 +1,138 @@
+local UI   = require('opus.ui')
+local Util = require('opus.util')
+
+local colors = _G.colors
+local fs     = _G.fs
+local shell  = _ENV.shell
+
+local selected
+
+-- fileui [--path=path] [--exec=filename]
+
+local page = UI.Page {
+	title = 'Select File',
+	-- x = 3, ex = -3, y = 2, ey = -2,
+	grid = UI.ScrollingGrid {
+		x = 2, y = 2, ex = -2, ey = -4,
+		path = '',
+		sortColumn = 'name',
+		columns = {
+			{ heading = 'Name', key = 'name' },
+			{ heading = 'Size', key = 'size', width = 5 }
+		},
+		getDisplayValues = function(_, row)
+			if row.size then
+				row = Util.shallowCopy(row)
+				row.size = Util.toBytes(row.size)
+			end
+			return row
+		end,
+		getRowTextColor = function(_, file)
+			if file.isDir then
+				return colors.cyan
+			end
+			if file.isReadOnly then
+				return colors.pink
+			end
+			return colors.white
+		end,
+		sortCompare = function(self, a, b)
+			if self.sortColumn == 'size' then
+				return a.size < b.size
+			end
+			if a.isDir == b.isDir then
+				return a.name:lower() < b.name:lower()
+			end
+			return a.isDir
+		end,
+		draw = function(self)
+			local files = fs.listEx(self.dir)
+			if #self.dir > 0 then
+				table.insert(files, {
+					name = '..',
+					isDir = true,
+				})
+			end
+			self:setValues(files)
+			self:setIndex(1)
+			UI.Grid.draw(self)
+		end,
+	},
+	path = UI.TextEntry {
+		x  =  2,
+		y  = -2,
+		ex = -11,
+		limit = 256,
+		accelerators = {
+			enter = 'path_enter',
+		}
+	},
+	cancel = UI.Button {
+		text = 'Cancel',
+		x = -9,
+		y = -2,
+		event = 'cancel',
+	},
+	draw = function(self)
+		self:fillArea(1, 1, self.width, self.height, string.rep('\127', self.width), colors.black, colors.gray)
+		self:drawChildren()
+	end,
+}
+
+function page:enable(path)
+	self:setPath(path or shell.dir())
+	UI.Page.enable(self)
+end
+
+function page:setPath(path)
+	self.grid.dir = path
+	while not fs.isDir(self.grid.dir) do
+		self.grid.dir = fs.getDir(self.grid.dir)
+	end
+
+	self.path.value = self.grid.dir
+end
+
+function page:eventHandler(event)
+	if event.type == 'grid_select' then
+		self.grid.dir = fs.combine(self.grid.dir, event.selected.name)
+		self.path.value = self.grid.dir
+		if event.selected.isDir then
+			self.grid:draw()
+			self.path:draw()
+		else
+			selected = self.path.value
+			UI:quit()
+		end
+
+	elseif event.type == 'path_enter' then
+		if fs.isDir(self.path.value) then
+			self:setPath(self.path.value)
+			self.grid:draw()
+			self.path:draw()
+		else
+			selected = self.path.value
+			UI:quit()
+		end
+
+	elseif event.type == 'cancel' then
+		UI:quit()
+	else
+		return UI.Page.eventHandler(self, event)
+	end
+	return true
+end
+
+local _, args = Util.parse(...)
+
+UI:setPage(page, args.path)
+UI:start()
+UI.term:setCursorBlink(false)
+
+if args.exec and selected then
+	shell.openForegroundTab(string.format('%s %s', args.exec, selected))
+	return
+end
+
+--print('selected: ' .. tostring(selected))
+return selected