file reorganisation

all lua frontend files are now in the frontend/ directory.
all old code is cleaned up.

frontend/ui/reader/readerpaging.lua

@@ -0,0 +1,61 @@
+ReaderPaging = InputContainer:new{
+	key_events = {
+		GotoNextPage = { {Input.group.PgFwd}, doc = "go to next page", event = "GotoPageRel", args = 1 },
+		GotoPrevPage = { {Input.group.PgBack}, doc = "go to previous page", event = "GotoPageRel", args = -1 },
+
+		GotoFirst = { {"1"}, doc = "go to start", event = "GotoPercent", args = 0},
+		Goto11 = { {"2"}, doc = "go to 11%", event = "GotoPercent", args = 11},
+		Goto22 = { {"3"}, doc = "go to 22%", event = "GotoPercent", args = 22},
+		Goto33 = { {"4"}, doc = "go to 33%", event = "GotoPercent", args = 33},
+		Goto44 = { {"5"}, doc = "go to 44%", event = "GotoPercent", args = 44},
+		Goto55 = { {"6"}, doc = "go to 55%", event = "GotoPercent", args = 55},
+		Goto66 = { {"7"}, doc = "go to 66%", event = "GotoPercent", args = 66},
+		Goto77 = { {"8"}, doc = "go to 77%", event = "GotoPercent", args = 77},
+		Goto88 = { {"9"}, doc = "go to 88%", event = "GotoPercent", args = 88},
+		GotoLast = { {"0"}, doc = "go to end", event = "GotoPercent", args = 100},
+	},
+	current_page = 0,
+	number_of_pages = 0
+}
+
+function ReaderPaging:init()
+	self.number_of_pages = self.ui.document.info.number_of_pages
+end
+
+-- wrapper for bounds checking
+function ReaderPaging:gotoPage(number)
+	if number == self.current_page then
+		return true
+	end
+	if number > self.number_of_pages
+	or number < 1 then
+		return false
+	end
+	debug("going to page number", number)
+
+	-- this is an event to allow other controllers to be aware of this change
+	self.ui:handleEvent(Event:new("PageUpdate", number))
+
+	return true
+end
+
+function ReaderPaging:onPageUpdate(new_page_no)
+	self.current_page = new_page_no
+end
+
+function ReaderPaging:onGotoPercent(percent)
+	debug("goto document offset in percent:", percent)
+	local dest = math.floor(self.number_of_pages * percent / 100)
+	if dest < 1 then dest = 1 end
+	if dest > self.number_of_pages then
+		dest = self.number_of_pages
+	end
+	self:gotoPage(dest)
+	return true
+end
+
+function ReaderPaging:onGotoPageRel(diff)
+	debug("goto relative page:", diff)
+	self:gotoPage(self.current_page + diff)
+	return true
+end