add gotoLocation for credocument

frontend/document/credocument.lua

@@ -119,6 +119,10 @@ function CreDocument:close()
 	Document.close(self)
 end
 
+function CreDocument:getPageCount()
+	return self._document:getPages()
+end
+
 function CreDocument:drawCurrentView(target, x, y, rect, pos)
 	tile_bb = Blitbuffer.new(rect.w, rect.h)
 	self._document:drawCurrentPage(tile_bb)

frontend/document/document.lua

@@ -126,6 +126,10 @@ function Document:_readMetadata()
 	return true
 end
 
+function Document:getPageCount()
+	return self.info.number_of_pages
+end
+
 -- calculates page dimensions
 function Document:getPageDimensions(pageno, zoom, rotation)
 	local native_dimen = self:getNativePageDimensions(pageno):copy()

frontend/ui/reader/readerrolling.lua

@@ -325,4 +325,7 @@ function ReaderRolling:gotoPercent(new_percent)
 	self:gotoPos(new_percent * self.doc_height / 10000)
 end
 
-
+function ReaderRolling:onGotoPage(number)
+	self:gotoPage(number)
+	return true
+end