add goto page menu entry for pdfreader

frontend/ui/reader/readergoto.lua

@@ -0,0 +1,80 @@
+require "ui/widget/container"
+require "ui/widget/inputdialog"
+
+
+ReaderGoto = InputContainer:new{
+	goto_menu_title = _("Go To"),
+	goto_dialog_title = _("Go to Page or Location"),
+}
+
+function ReaderGoto:init()
+	self.goto_dialog = InputDialog:new{
+		title = self.goto_dialog_title,
+		input_hint = "(1 - "..self.document.info.number_of_pages..")",
+		buttons = {
+			{	
+				{
+					text = _("Cancel"),
+					enabled = true,
+					callback = function()
+						self:onClose()
+					end,
+				},
+				{
+					text = _("Page"),
+					enabled = self.document.info.has_pages,
+					callback = function()
+						self:onGotoPage()
+					end,
+				},
+				{
+					text = _("Location"),
+					enabled = not self.document.info.has_pages,
+					callback = function()
+						self:onGotoLocation()
+					end,
+				},
+			},
+		},
+		input_type = "number",
+		width = Screen:getWidth() * 0.8,
+		height = Screen:getHeight() * 0.2,
+	}
+	self.ui.menu:registerToMainMenu(self)
+end
+
+function ReaderGoto:addToMainMenu(tab_item_table)
+	-- insert goto command to main reader menu
+	table.insert(tab_item_table.navi, {
+		text = self.goto_menu_title,
+		callback = function()
+			self:onShowGotoDialog()
+		end,
+	})
+end
+
+function ReaderGoto:onShowGotoDialog()
+	DEBUG("show goto dialog")
+	self.goto_dialog:onShowKeyboard()
+	UIManager:show(self.goto_dialog)
+end
+
+function ReaderGoto:onClose()
+	self.goto_dialog:onClose()
+	UIManager:close(self.goto_dialog)
+end
+
+function ReaderGoto:onGotoPage()
+	local number = tonumber(self.goto_dialog:getInputText())
+	if number then
+		DEBUG("go to page", number)
+		self.ui:handleEvent(Event:new("PageUpdate", number))
+	end
+	self:onClose()
+	return true
+end
+
+function ReaderGoto:onGotoLocation()
+	-- TODO: implement go to location
+	self:onClose()
+end

frontend/ui/readerui.lua

@@ -9,6 +9,7 @@ require "ui/reader/readerbookmark"
 require "ui/reader/readerfont"
 require "ui/reader/readertypeset"
 require "ui/reader/readermenu"
+require "ui/reader/readergoto"
 require "ui/reader/readerconfig"
 require "ui/reader/readercropping"
 require "ui/reader/readerkopt"
@@ -106,6 +107,14 @@ function ReaderUI:init()
 		document = self.document,
 	}
 	table.insert(self, highlight)
+	-- goto
+	local goto = ReaderGoto:new{
+		dialog = self.dialog,
+		view = self[1],
+		ui = self,
+		document = self.document,
+	}
+	table.insert(self, goto)
 	-- dictionary
 	local dict = ReaderDictionary:new{
 		dialog = self.dialog,