add toc menu support for readerui

frontend/document/document.lua

@@ -92,6 +92,10 @@ function Document:getPageDimensions(pageno, zoom, rotation)
 	return native_dimen
 end
 
+function Document:getToc()
+	return self._document:getToc()
+end
+
 -- load implementations:
 
 require "document/pdfdocument"

frontend/ui/reader/readertoc.lua

@@ -0,0 +1,36 @@
+ReaderToc = InputContainer:new{
+	key_events = {
+		ShowToc = { {"T"}, doc = "show Table of Content menu"},
+	},
+	dimen = Geom:new{ w = G_width-20, h = G_height-20},
+}
+
+function ReaderToc:cleanUpTocTitle(title)
+	return title:gsub("\13", "")
+end
+
+function ReaderToc:onSetDimensions(dimen)
+	self.dimen = dimen
+end
+
+function ReaderToc:onShowToc()
+	function callback(item)
+		self.ui:handleEvent(Event:new("PageUpdate", item.page))
+	end
+
+	local items = self.ui.document:getToc()
+	-- build menu items
+	for _,v in ipairs(items) do
+		v.text = ("        "):rep(v.depth-1)..self:cleanUpTocTitle(v.title)
+	end
+	toc_menu = Menu:new{
+		title = "Table of Contents",
+		item_table = items,
+		width = self.dimen.w,
+		height = self.dimen.h,
+		on_select_callback = callback,
+	}
+
+	UIManager:show(toc_menu)
+end
+

frontend/ui/readerui.lua

@@ -4,6 +4,7 @@ require "ui/reader/readerzooming"
 require "ui/reader/readerpanning"
 require "ui/reader/readerrotation"
 require "ui/reader/readerpaging"
+require "ui/reader/readertoc"
 
 --[[
 This is an abstraction for a reader interface
@@ -54,6 +55,12 @@ function ReaderUI:init()
 		view = self[1],
 		ui = self
 	}
+	-- Toc menu controller
+	self[5] = ReaderToc:new{
+		dialog = self.dialog,
+		view = self[1],
+		ui = self
+	}
 	-- if needed, insert a paging container
 	if self.document.info.has_pages then
 		local pager = ReaderPaging:new{