Modul:Mapframe

Denne modulen benyttes av kartmalen {{Kart}}. Se dokumentasjonssiden til denne malen for bruk og instruksjoner.

---

local math_mod = require( "Module:Math" )

local p = {}

function p.map(frame)
--	return "<pre>" .. mw.text.jsonEncode(frame:getParent().args, mw.text.JSON_PRETTY) .. "</pre>"
	return map2(mw.getCurrentFrame():getParent().args)
end

function map2(args)
	local id = args['id'] or args[1] or nil
	if id == "" then
		id = nil
	end
	local entity = mw.wikibase.getEntity(id)
	if not id then
		if not entity then
			return ""
		end
		id = entity.id
	end
	local width = tonumber(args["width"]) or 350
	local height  = tonumber(args["height"]) or width
	local zoom = args["zoom"] or 8
	local lat = args["latitude"] or args["lat"]
	local lon = args["longitude"] or args["lon"]
	local includeProperty = args["include property"] or nil
	local wdlat,wdlon = wdCoords(entity)
	if not lat or not lon then
		lat = wdlat
		lon = wdlon
    end
    if not lon or not lat then
    	return ""
    end
	local text = args["text"]  or mw.wikibase.label(id)
	local align = args["align"]  or 'right'
	
	local geojson = {}
	local stroke = "#ff0000"
	local opacity = 0.1
	if includeProperty then
		opacity = 0.0
	end
	showEntity(geojson,id,entity,stroke,title,opacity)
	if args['marker'] and lat and lon then
    	local point = mappoint(lat,lon)
		table.insert(geojson, point)
	end
	if includeProperty then
		includeProp(geojson,entity,includeProperty)
	end
	local newargs = {
    		['height'] = height,
    		['width'] = width,
    		['align'] = align,
    		['latitude'] = lat,
    		['longitude'] = lon,
    		['zoom'] = zoom or 8
    	}
    	if frameless then
    		newargs['frameless'] = 'frameless'
    	end
    	if text then
    		newargs['text'] = text
    	end
	return  mw.getCurrentFrame():extensionTag('mapframe', mw.text.jsonEncode(geojson), newargs)
	
--    return "<pre>" .. mw.text.jsonEncode(geojson, mw.text.JSON_PRETTY) .. "</pre>" 
end

function includeProp(geojson,entity,prop)
	if not entity or not prop then
		return nil
	end
	local claims = entity.claims[prop] or nil
	if not claims then
		return nil
	end
	
	local stroke = "#ff0000"
	for idx,claim in pairs(claims) do
		local qualifiers = claim.qualifiers
		local endtime = nil
		if qualifiers then
			endtime = claim.qualifiers["P582"] or nil
		end
		-- todo: Test on end time simplified. This assumes that all end times are in the past
		if not endtime then
			local id = claim.mainsnak.datavalue.value['id'] or nil
			visEntity(geojson,id,stroke,0.1)
		end
	end

	return geojson
end

-- Visualize an entity through boundary, marker with name of entity. geojson updated by showEntity
function visEntity(geojson,id,stroke,opacity)
	if not id then
		return nil
	end
	local entity = mw.wikibase.getEntity(id)
	if not entity then
		return nil
	end
	return showEntity(geojson,id,entity,stroke,nil,opacity,"createLink")
end
function showEntity(geojson,id,entity,stroke,title,opacity,createLink)
	local wdlat,wdlon = wdCoords(entity)
	local text = title  or mw.wikibase.label(id)
	local link = mw.wikibase.sitelink(id)
	if createLink and text and link then
		text = "[[" .. link .. "|" .. text .. "]]"
	end
	description = nil
	if createLink then
		if entity.claims["P18"] then
			local claim = selectSingleClaim(entity.claims["P18"])
	   		local image = claim.mainsnak.datavalue.value or nil
			if image then
				description = "[[File:" .. image .. "]]"
			end
		end
	end
	local shape = geoshape(id,stroke,opacity)
	table.insert(geojson, shape)
	local line = geoline(id,stroke)
	table.insert(geojson, line)
	if wdlat and wdlon then
    	local point = mappoint(wdlat,wdlon,text,description)
		table.insert(geojson, point)
	end
    return geojson
end

function wdCoords(entity)
	local wdlat,wdlon = nil,nil
	if entity.claims["P625"] then
		local claim = selectSingleClaim(entity.claims["P625"])
	   	local coord = claim.mainsnak.datavalue.value or nil
   		wdlat = coord["latitude"] or nil
   		wdlon = coord["longitude"] or nil
   	end
	return wdlat,wdlon
end


function wdGeoShape(entity)
	local shape = nil
	if entity.claims["P3896"] then
		local claim = selectSingleClaim(entity.claims["P3896"])
		local value = claim.mainsnak.datavalue.value or nil
		if value then
	       local shape = {
	       	["type"] = "ExternalData",
			["service"] = "page",
			["title"] =  value
		}
		return shape
		end
	end
	return nil
end

function selectSingleClaim(claims)
	if not claims then
		return nil
	end
	local selectedClaim = nil
	for idx,claim in pairs(claims) do
		if claim.rank == 'preferred' then
			return claim
		end
		if claim.rank == 'normal' then
			if not selectedClaim then
				selectedClaim = claim
			end
		end
	end
	return selectedClaim
end

function mappoint(latitude,longitude,title,description)
	local point = {}
    point["type"] = "Feature"
    local geo = {}
    geo["type"] = "Point"
	local pos = {}
    geo["coordinates"] = pos
    -- ensure the coordinates are not too long for the geojson
    geo["coordinates"][1] = math_mod._round( longitude, 6 )
    geo["coordinates"][2] = math_mod._round( latitude, 6 )
    local prop = {}
    if title then
    	prop["title"] = title
    end
    if description then
    	prop["description"] = description
    end
    prop["marker-size"] = "small"
    point["properties"] = prop
    point["geometry"] = geo
    return point
end

function geoline(id,stroke)
	local line = {
		["type"] = "ExternalData",
		["service"] = "geoline",
		["ids"] =  id,
        ['properties'] = {
        	["stroke"] = stroke,
        	["stroke-width"]= 2
        }
     }
     return line
end

function geoshape(id,stroke,opacity)
	local line = {
		["type"] = "ExternalData",
		["service"] = "geoshape",
		["ids"] =  id,
        ['properties'] = {
        	["stroke"] = stroke,
        	["stroke-width"]= 2,
        	["fill-opacity"] = opacity or 0.1
        }
     }
     return line
end

return p