Package Exports

@vidro/map-handler
@vidro/map-handler/dist/map-handler.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@vidro/map-handler) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Map Handler

Version 1.1.0 - Jan 2023

Tool to achieve the easiest way of communication with the map iframe.

Installation
Events
Methods

Some of the multiple use case flows are documented in flows.md

TL;DR

<html>
  <body>
    <iframe id="map-frame" name="map-frame" src=""></iframe>
    <button id="btZoomIn">Zoom In</button>
    <script src="https://unpkg.com/@vidro/map-handler@1.0.5/dist/map-handler.js"></script> -->
    <script>
      var loadMapReq = new XMLHttpRequest();
      loadMapReq.addEventListener("load", function(){
        communicator = new VidroMaps.Communicator({this.responseText.message.sessionToken});
        document.querySelector("#map-frame").src = `${this.responseText.message.iframe}?sessionToken=${this.responseText.message.sessionToken}`;

        document.querySelector("#btZoomIn").addEventListener("click", function(){
          communicator.ZoomIn();
        });

      }
      loadMapReq.open("GET", "http://APIURL/map/PROJECT_ID",true);
      loadMapReq.setRequestHeader('Content-type', 'application/json');
      loadMapReq.setRequestHeader('Authorization',`Bearer ${USER_TOKEN}`);
      loadMapReq.send();
    </script>
  </body>
</html>

Installation

0. Pre-requisites

You should have one iframe already created on the DOM with the attributes name="map-frame" id="map-frame".

1. Include the library:

You can do this inyecting directly to window:

<script src="path/to/lib.js"></script>
<script src="path/to/your.js"></script>

Or if you're working with NPM / ES6:

npm install --save @vidro/map-handler
...
import { Communicator } from "@vidro/map-handler";

2. Instance the communicator with the sessionToken in options object:

If you are inyecting into window:

var communicator = new VidroMaps.Communicator({
  sessionToken: sessionToken
});

Or if you're working with NPM / ES6:

const communicator = new Communicator({
    sessionToken: "sessionToken"
});

Logs

If you want to see console.logs, you can activate logs with setDebug method. Once map is loaded, invoke this method. Will create or remove a cookie. After calling setDebug reload the map.

Logs are deactivated by default.

setDebug(debug)

//activate
setDebug(1);

//deactivate
setDebug(0);

Events

How to listen

communicator.on("onZoomChange", function(data){
  console.log("onZoomChange event",data);
});

Available events

onZoomChange

Notifies zoom level changed

onCenterChange

Notifies when map is moved

{coordinates:  [419463.63262834214, 4577166.970846243]
type: "onCenterChange"}

geomAdded

Notifies geometry added to map, as string

POINT(418925 4577135)

POLYGON((418391.8715694032 4576832.484383419,418721.82301488414 4577299.667608328,418727.18131229794 4576947.724919814,418391.8715694032 4576832.484383419))

MULTILINESTRING((419268.8979576373 4577019.482027252,419146.6929889547 4577457.250226778,418798.40365705814 4577415.776056751))

loaded

Notifies when map or layers are loaded.

There're two types of events:

map is dispatched when map (with background) is loaded.
layer is dispatched when a layer is loaded

{what:'map'}

{what:'layer'
name:'Arc'}

layers

Notifies an array of displayed layers

geoJSONlayers

Notifies an array of displayed GeoJSON layers

activeLayer

Notifies wich layer is marked as active

WMSInfoAvailable

Notifies when WMS is available for this map

availableWMSLayers

List of available layers from WMS server

getToc

Formatted Layers TOC (table of contents)

coordinates

Notifies clicked coordinates (x,y)

First coordinate is X value.

{coordinates: [419463.63262834214, 4577166.970846243]
type: "coordinates"}

info

Notifies info results. There're 2 availables infos wms and giswater

{type: "info", infoType: "wms", data: "<GetFeatureInfoResponse>↵ <Layer name="Incidencia_…  </Feature>↵ </Layer>↵</GetFeatureInfoResponse>↵"}

{type: "info", infoType: "giswater", data: {…}}

layerElements

Receives a list of elements from a `getElementsFromLayer request

{type: "layerElements", data: {xml or json}}

geolocation

Notifies user position, coordinates (x,y)

First coordinate is X value.


{type: "geolocation", coordinates: Array(2)}
coordinates: (2) [419297.8249458591, 4576821.519666988]

Giswater tiled background

Giswater's tiled background has two events, one for notify if is available or not, and a another one for notify if is rendered or not

giswaterTiledBackgroundAvailable and giswaterTiledBackgroundDisplayed

{type: "giswaterTiledBackgroundAvailable", available: true/false}

{type: "giswaterTiledBackgroundDisplayed", visible: true/false, tiled: "tiled id"}

Giswater layer Available filters

List of available filters for a Giswater layer

{type: "GiswaterLayerAvailableFilters", filters: array}

Giswater filters applied

Event dispatched after applying giswater filters

{type: "GiswaterFiltersApplied", filters: array}

Measure end

Event dispatched when a measure ends

{type: "MeasureEnd", measure: 'line/area' result: "measure result}

error

Notifies errors

{type: "error", error: "No clicked coordinates"}

Methods

ZoomIn()

ZoomOut()

zoomToExtent()

zoomToCoordinates(coordinates,zoomLevel)

Zooms to given coordinates

lat (x) <integer>
long (y) <integer>
zoomLevel <integer> - zoom level

zoomToCoordinates(419006.12985785044, 4576698.8136144625,18);

AddGeom(string)

Launches drawing tools with the geometry type

geom <string> - geometry type Point | Line | Polygon

AddGeom('Point');

AddGeom('Line');

AddGeom('Polygon');

An geomAdded event will be received after calling the method.

clear()

Clears drawn geometries

toggleLayer

Shows/hides a layer

layerName <string> - layer name
properties <object> - optional layer properties
- gutter <integer> - The size in pixels of the gutter around image tiles to ignore, only applies for multitile layer
- singletile <boolean> - SingleTile Layer
- transparent <boolean> - Transparent Layer

By default, layer properties will be:

gutter: 0

singletile: false - will render a multitile layer

transparent: true

With no properties

toggleLayer('somelayer_name');

With properties

toggleLayer('somelayer_name', {gutter: 10, transparent: false, singletile: false);

setActiveLayer()

Sets a layer as acticve layer, used for infos

setActiveLayer('somelayer_name');

reloadDisplayedLayers

Reloads displayed layers

reloadDisplayedLayers();

loadWMSAvailableLayers

Gets a list of available layers from WMS server

loadWMSAvailableLayers();

An availableWMSLayers event will be received after calling the method.

getToc

Gets a formatted Layers TOC (Table of contents)

getToc();

An getToc event will be received after calling the method.

getElementsFromLayer

Gets a list of elements from a layer, based on a WMS request

getElementsFromLayer(layer,limit,format)

layer <string> - layer name
limit <integer> - limit output number of elements (default 100)
format <string> - output format
- xml - default
  - json

infoFromCoordinates

There're two available info from coordinates wms or giswater.

Important a click on the map must be done before calling this method. If you don't specify a layer, will use the layer setted as Active layer

type <string> - info type
- wms - wms info
- giswater - giswater info
layer <string> optional layer name to do info. If null, will use current active layer.
hitTolerance <integer> optional for geoJSON Info, pixels inside the radius around the given will be checked for features. Default 5.
format <string> optional - output format for WMS requests
- xml - default
  - json

infoFromCoordinates('wms'); //will use active layer

infoFromCoordinates('giswater');
infoFromCoordinates('giswater','Arc');
infoFromCoordinates('wms','Arc',null,'json'); //will use active layer and json output

An info event will be received after calling the method.

Geolocalize

Geolocalizes user. Will dispatch geolocation event .

toggle <Boolean> - starts or cancels geolocation

//start
Geolocalize(true)

//cancel
Geolocalize(false)

Important Add allow="geolocation" to html iframe tag.

Higlight

Highlights a geometry

Params

options <object> highlight options
- geom <string> - geometry string
- zoom <object>
  - zoom.type <string> - level | element
    
    level will zoom to zoomLevel
    
    element geometry center
  - zoom.zoomLevel <integer> 1 to 28

//Highlight a line and zoom to level 6

let options = {
    'geom': 'MULTILINESTRING((418596.62555076234 4577083.383681167,419026.2319996517 4577216.795306675))',
    'zoom':{
        'type':'level',
        'zoomLevel':6
    }
}

Highlight(options);

//Highlight a line to geometry center

let options = {
    'geom': 'MULTILINESTRING((418596.62555076234 4577083.383681167,419026.2319996517 4577216.795306675))',
    'zoom':{
        'type':'element'
    }
}

Highlight(options);

toggleGiswaterTiled

Only for Giswater's maps. Toggles tiled background (in case tiled background is configured)

Params

toggle <boolean> shows/hides tiled background
tiled <string> tiled background name

toggleGiswaterTiled(true);

addGeoJSON

Adds geoJSON layer

Params

geoJSON <geoJSON> geoJSON data
options <json> layer options
- fillcolor <string> fill color. If null will use red color (#ff0000)
- strokecolor <string> strokecolor color. If null will use red color (#ff0000)
- geom_radius <integer> geometry radius
- fontColor <string> text color. If null will use red color (#ff0000)
- font <string> font family https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/fon
- fontSize <integer> font size
- offsetY <integer> label offset Y
name <string> geoJson layer name, if null will use a random string

addGeoJSON(geoJSON,options, name);


addGeoJSON('GeoJSONContent',{},null);

const options = {
    fillcolor:'#e3ff00',
    strokecolor: '#e3ff00'
}

addGeoJSON('GeoJSONContent', options,'name');

removeGeoJSONLayer

Removes a GeoJSON Layer

removeGeoJSONLayer(layerName);

removeGeoJSONLayer('somename');

clearGeoJSON

Clears geoJSON layers

clearGeoJSON();

setGiswaterFilters

Set Giswater's filters for displayed layers

Filters must be a JSON with valid fields. Available layer filters can be obtained with method getGiswaterLayerAvailableFilters

setGiswaterFilters(JSON);

setGiswaterFilters({"expl_id":[1,2,3]});

getGiswaterLayerAvailableFilters

Get available WMTS filters for a Giswater layer

getGiswaterLayerAvailableFilters(layername);

getGiswaterLayerAvailableFilters("Arc");

setCustomColors

Sets colors and stroke width for added & highlight geometries.

Properties:

geom_stroke_color - stroke color in RGB format
geom_fill_color - fill color in RGB format
geom_stroke_width - stroke width in pixels, default 1.
geom_shape - shape por point, circle(default) or square
geom_radius - point radius or square side in pixels. Default 4.
measure_fill_color - fill color for measure area, in RGB format.
measure_stroke_color - stroke color for measure tool, in RGB format.

setCustomColors({geom_stroke_color, geom_fill_color, geom_stroke_width,geom_ shape,geom_radius, measure_fill_color, measure_stroke_color});

setCustomColors({
        geom_stroke_color: 'rgb(19, 39, 99,0.5)',
        geom_fill_color: 'rgb(19, 39, 99,0.5)',
        geom_stroke_width: 1,
        geom_shape: 'circle',
        geom_radius: 2,
        measure_fill_color: "rgba(222,218,125,0.63)",
        measure_stroke_color: "rgba(255,0,0,1)",
        });

On Bmaps projects, default values are taken from Backoffice:

geom_stroke_color -> Bmaps: geom_select_stroke_color
geom_fill_color -> Bmaps: geom_select_fill_color
measure_fill_color -> Bmaps: measure_fill_color
measure_stroke_color: -> Bmaps: measure_stroke_color

changeBackground

Change background

Properties:

newBackgroud - background name (OSM, google, CartoDBLight,CartoDBDark)

changeBackground('google');

initMeasure

Inits measure tool. When measures ends, dispatchs MeasureEnd event.

Properties:

type - measure type area or line
textStart - text to display when measure starts
textContinue - text to display for continue measuring

initMeasure('line','Click to start","Continue");

cancelMeasure

Cancel measure tool.

cancelMeasure();

Multiple iframes

Is possible to use multiple iframe on a single page, follow this steps.

Set to your iframe tags the id & value
Add to each iframe.src &domId=IFRAME_ID
Instantiate each iframe:

var communicator = new VidroMaps.Communicator({
      sessionToken: sessionToken,
      id:'IFRAME_ID'
});

Examples

Simple

examples/simple/

A simple integration with just zoom buttons

How it works

Gets user, password and API url from the url
Request a user token to the API
Loads the first map of the user

https://www.vidrosoftware.com/examples/simple/?user=USER&pwd=USER_PASWORD&api=API_URL

Full

examples/full/

Full integration

How it works

User, password and API url are defined on the html form
Stores token and last map loaded in a fake cache
There's a form for choosing map and customize map parameters

https://www.vidrosoftware.com/examples/full/

Vidromaps

examples/vidromaps/

Vidromaps integration

How it works

Paste iframe code

https://www.vidrosoftware.com/examples/vidromaps/

Serverless

examples/serveLess/

Server less sample integration

How it works

Gets user, password and API url from the url
Request a user token to the API
Loads the first map of the user with one layer rendered
On map click, performs an wms info, displays one attribute, highlights the clicked point and centers map on that point

Mutiple iframes

examples/multipleiframes/

Multiple iframes integration

How it works

Replace YOUR_SESSION_TOKEN with your session token code on both inputs code1 and code2.

https://www.vidrosoftware.com/examples/multipleiframes/

Known issues

Custom logo is not displayed

Could be CORS issue. Check the headers sent by your server.

With Apache can be solved with and .htaccess file with this content:

Header set Access-Control-Allow-Origin "*"
Header add Cross-Origin-Resource-Policy: "cross-origin"
Header add Cross-Origin-Embedder-Policy: "require-corp"

QGIS Broken symbology

QGIS multi tile layers could show broken symbology:

This can be solved using singletile: true or adding gutter: value in pixels if is a multitiule layer, on toggleLayer method.

Is if is a Giswwater project, you can set this options (Render mode and Gutter) on Bmaps backoffice.