gnu-social/plugins/Mapstraction/js/mxn.core.js

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(function(){
/**
* @exports mxn.util.$m as $m
*/
var $m = mxn.util.$m;
/**
* Initialise our provider. This function should only be called
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* from within mapstraction code, not exposed as part of the API.
* @private
*/
var init = function() {
this.invoker.go('init', [ this.currentElement, this.api ]);
this.applyOptions();
};
/**
* Mapstraction instantiates a map with some API choice into the HTML element given
* @name mxn.Mapstraction
* @constructor
* @param {String} element The HTML element to replace with a map
* @param {String} api The API to use, one of 'yahoo', 'microsoft', 'openstreetmap', 'multimap', 'map24', 'openlayers', 'mapquest'. If omitted, first loaded provider implementation is used.
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* @param {Bool} debug optional parameter to turn on debug support - this uses alert panels for unsupported actions
* @exports Mapstraction as mxn.Mapstraction
*/
var Mapstraction = mxn.Mapstraction = function(element, api, debug) {
if (!api){
api = mxn.util.getAvailableProviders()[0];
}
this.api = api;
this.maps = {};
this.currentElement = $m(element);
this.eventListeners = [];
this.markers = [];
this.layers = [];
this.polylines = [];
this.images = [];
this.controls = [];
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this.loaded = {};
this.onload = {};
this.element = element;
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// option defaults
this.options = {
enableScrollWheelZoom: false,
enableDragging: true
};
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this.addControlsArgs = {};
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// set up our invoker for calling API methods
this.invoker = new mxn.Invoker(this, 'Mapstraction', function(){ return this.api; });
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// Adding our events
mxn.addEvents(this, [
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/**
* Map has loaded
* @name mxn.Mapstraction#load
* @event
*/
'load',
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/**
* Map is clicked {location: LatLonPoint}
* @name mxn.Mapstraction#click
* @event
*/
'click',
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/**
* Map is panned
* @name mxn.Mapstraction#endPan
* @event
*/
'endPan',
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/**
* Zoom is changed
* @name mxn.Mapstraction#changeZoom
* @event
*/
'changeZoom',
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/**
* Marker is removed {marker: Marker}
* @name mxn.Mapstraction#markerAdded
* @event
*/
'markerAdded',
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/**
* Marker is removed {marker: Marker}
* @name mxn.Mapstraction#markerRemoved
* @event
*/
'markerRemoved',
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/**
* Polyline is added {polyline: Polyline}
* @name mxn.Mapstraction#polylineAdded
* @event
*/
'polylineAdded',
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/**
* Polyline is removed {polyline: Polyline}
* @name mxn.Mapstraction#polylineRemoved
* @event
*/
'polylineRemoved'
]);
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// finally initialize our proper API map
init.apply(this);
};
// Map type constants
Mapstraction.ROAD = 1;
Mapstraction.SATELLITE = 2;
Mapstraction.HYBRID = 3;
// methods that have no implementation in mapstraction core
mxn.addProxyMethods(Mapstraction, [
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/**
* Adds a large map panning control and zoom buttons to the map
* @name mxn.Mapstraction#addLargeControls
* @function
*/
'addLargeControls',
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/**
* Adds a map type control to the map (streets, aerial imagery etc)
* @name mxn.Mapstraction#addMapTypeControls
* @function
*/
'addMapTypeControls',
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/**
* Adds a GeoRSS or KML overlay to the map
* some flavors of GeoRSS and KML are not supported by some of the Map providers
* @name mxn.Mapstraction#addOverlay
* @function
* @param {String} url GeoRSS or KML feed URL
* @param {Boolean} autoCenterAndZoom Set true to auto center and zoom after the feed is loaded
*/
'addOverlay',
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/**
* Adds a small map panning control and zoom buttons to the map
* @name mxn.Mapstraction#addSmallControls
* @function
*/
'addSmallControls',
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/**
* Applies the current option settings
* @name mxn.Mapstraction#applyOptions
* @function
*/
'applyOptions',
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/**
* Gets the BoundingBox of the map
* @name mxn.Mapstraction#getBounds
* @function
* @returns {BoundingBox} The bounding box for the current map state
*/
'getBounds',
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/**
* Gets the central point of the map
* @name mxn.Mapstraction#getCenter
* @function
* @returns {LatLonPoint} The center point of the map
*/
'getCenter',
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/**
* Gets the imagery type for the map.
* The type can be one of:
* mxn.Mapstraction.ROAD
* mxn.Mapstraction.SATELLITE
* mxn.Mapstraction.HYBRID
* @name mxn.Mapstraction#getMapType
* @function
* @returns {Number}
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*/
'getMapType',
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/**
* Returns a ratio to turn distance into pixels based on current projection
* @name mxn.Mapstraction#getPixelRatio
* @function
* @returns {Float} ratio
*/
'getPixelRatio',
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/**
* Returns the zoom level of the map
* @name mxn.Mapstraction#getZoom
* @function
* @returns {Integer} The zoom level of the map
*/
'getZoom',
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/**
* Returns the best zoom level for bounds given
* @name mxn.Mapstraction#getZoomLevelForBoundingBox
* @function
* @param {BoundingBox} bbox The bounds to fit
* @returns {Integer} The closest zoom level that contains the bounding box
*/
'getZoomLevelForBoundingBox',
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/**
* Displays the coordinates of the cursor in the HTML element
* @name mxn.Mapstraction#mousePosition
* @function
* @param {String} element ID of the HTML element to display the coordinates in
*/
'mousePosition',
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/**
* Resize the current map to the specified width and height
* (since it is actually on a child div of the mapElement passed
* as argument to the Mapstraction constructor, the resizing of this
* mapElement may have no effect on the size of the actual map)
* @name mxn.Mapstraction#resizeTo
* @function
* @param {Integer} width The width the map should be.
* @param {Integer} height The width the map should be.
*/
'resizeTo',
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/**
* Sets the map to the appropriate location and zoom for a given BoundingBox
* @name mxn.Mapstraction#setBounds
* @function
* @param {BoundingBox} bounds The bounding box you want the map to show
*/
'setBounds',
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/**
* setCenter sets the central point of the map
* @name mxn.Mapstraction#setCenter
* @function
* @param {LatLonPoint} point The point at which to center the map
* @param {Object} options Optional parameters
* @param {Boolean} options.pan Whether the map should move to the locations using a pan or just jump straight there
*/
'setCenter',
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/**
* Centers the map to some place and zoom level
* @name mxn.Mapstraction#setCenterAndZoom
* @function
* @param {LatLonPoint} point Where the center of the map should be
* @param {Integer} zoom The zoom level where 0 is all the way out.
*/
'setCenterAndZoom',
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/**
* Sets the imagery type for the map
* The type can be one of:
* mxn.Mapstraction.ROAD
* mxn.Mapstraction.SATELLITE
* mxn.Mapstraction.HYBRID
* @name mxn.Mapstraction#setMapType
* @function
* @param {Number} type
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*/
'setMapType',
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/**
* Sets the zoom level for the map
* MS doesn't seem to do zoom=0, and Gg's sat goes closer than it's maps, and MS's sat goes closer than Y!'s
* TODO: Mapstraction.prototype.getZoomLevels or something.
* @name mxn.Mapstraction#setZoom
* @function
* @param {Number} zoom The (native to the map) level zoom the map to.
*/
'setZoom',
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/**
* Turns a Tile Layer on or off
* @name mxn.Mapstraction#toggleTileLayer
* @function
* @param {tile_url} url of the tile layer that was created.
*/
'toggleTileLayer'
]);
/**
* Sets the current options to those specified in oOpts and applies them
* @param {Object} oOpts Hash of options to set
*/
Mapstraction.prototype.setOptions = function(oOpts){
mxn.util.merge(this.options, oOpts);
this.applyOptions();
};
/**
* Sets an option and applies it.
* @param {String} sOptName Option name
* @param vVal Option value
*/
Mapstraction.prototype.setOption = function(sOptName, vVal){
this.options[sOptName] = vVal;
this.applyOptions();
};
/**
* Enable scroll wheel zooming
* @deprecated Use setOption instead.
*/
Mapstraction.prototype.enableScrollWheelZoom = function() {
this.setOption('enableScrollWheelZoom', true);
};
/**
* Enable/disable dragging of the map
* @param {Boolean} on
* @deprecated Use setOption instead.
*/
Mapstraction.prototype.dragging = function(on) {
this.setOption('enableDragging', on);
};
/**
* Change the current api on the fly
* @param {String} api The API to swap to
* @param element
*/
Mapstraction.prototype.swap = function(element,api) {
if (this.api === api) {
return;
}
var center = this.getCenter();
var zoom = this.getZoom();
this.currentElement.style.visibility = 'hidden';
this.currentElement.style.display = 'none';
this.currentElement = $m(element);
this.currentElement.style.visibility = 'visible';
this.currentElement.style.display = 'block';
this.api = api;
if (this.maps[this.api] === undefined) {
init.apply(this);
this.setCenterAndZoom(center,zoom);
for (var i = 0; i < this.markers.length; i++) {
this.addMarker(this.markers[i], true);
}
for (var j = 0; j < this.polylines.length; j++) {
this.addPolyline( this.polylines[j], true);
}
}
else {
//sync the view
this.setCenterAndZoom(center,zoom);
//TODO synchronize the markers and polylines too
// (any overlays created after api instantiation are not sync'd)
}
this.addControls(this.addControlsArgs);
};
/**
* Returns the loaded state of a Map Provider
* @param {String} api Optional API to query for. If not specified, returns state of the originally created API
*/
Mapstraction.prototype.isLoaded = function(api){
if (api === null) {
api = this.api;
}
return this.loaded[api];
};
/**
* Set the debugging on or off - shows alert panels for functions that don't exist in Mapstraction
* @param {Boolean} debug true to turn on debugging, false to turn it off
*/
Mapstraction.prototype.setDebug = function(debug){
if(debug !== null) {
this.debug = debug;
}
return this.debug;
};
/////////////////////////
//
// Event Handling
//
// FIXME need to consolidate some of these handlers...
//
///////////////////////////
// Click handler attached to native API
Mapstraction.prototype.clickHandler = function(lat, lon, me) {
this.callEventListeners('click', {
location: new LatLonPoint(lat, lon)
});
};
// Move and zoom handler attached to native API
Mapstraction.prototype.moveendHandler = function(me) {
this.callEventListeners('moveend', {});
};
/**
* Add a listener for an event.
* @param {String} type Event type to attach listener to
* @param {Function} func Callback function
* @param {Object} caller Callback object
*/
Mapstraction.prototype.addEventListener = function() {
var listener = {};
listener.event_type = arguments[0];
listener.callback_function = arguments[1];
// added the calling object so we can retain scope of callback function
if(arguments.length == 3) {
listener.back_compat_mode = false;
listener.callback_object = arguments[2];
}
else {
listener.back_compat_mode = true;
listener.callback_object = null;
}
this.eventListeners.push(listener);
};
/**
* Call listeners for a particular event.
* @param {String} sEventType Call listeners of this event type
* @param {Object} oEventArgs Event args object to pass back to the callback
*/
Mapstraction.prototype.callEventListeners = function(sEventType, oEventArgs) {
oEventArgs.source = this;
for(var i = 0; i < this.eventListeners.length; i++) {
var evLi = this.eventListeners[i];
if(evLi.event_type == sEventType) {
// only two cases for this, click and move
if(evLi.back_compat_mode) {
if(evLi.event_type == 'click') {
evLi.callback_function(oEventArgs.location);
}
else {
evLi.callback_function();
}
}
else {
var scope = evLi.callback_object || this;
evLi.callback_function.call(scope, oEventArgs);
}
}
}
};
////////////////////
//
// map manipulation
//
/////////////////////
/**
* addControls adds controls to the map. You specify which controls to add in
* the associative array that is the only argument.
* addControls can be called multiple time, with different args, to dynamically change controls.
*
* args = {
* pan: true,
* zoom: 'large' || 'small',
* overview: true,
* scale: true,
* map_type: true,
* }
* @param {array} args Which controls to switch on
*/
Mapstraction.prototype.addControls = function( args ) {
this.addControlsArgs = args;
this.invoker.go('addControls', arguments);
};
/**
* Adds a marker pin to the map
* @param {Marker} marker The marker to add
* @param {Boolean} old If true, doesn't add this marker to the markers array. Used by the "swap" method
*/
Mapstraction.prototype.addMarker = function(marker, old) {
marker.mapstraction = this;
marker.api = this.api;
marker.location.api = this.api;
marker.map = this.maps[this.api];
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var propMarker = this.invoker.go('addMarker', arguments);
marker.setChild(propMarker);
if (!old) {
this.markers.push(marker);
}
this.markerAdded.fire({'marker': marker});
};
/**
* addMarkerWithData will addData to the marker, then add it to the map
* @param {Marker} marker The marker to add
* @param {Object} data A data has to add
*/
Mapstraction.prototype.addMarkerWithData = function(marker, data) {
marker.addData(data);
this.addMarker(marker);
};
/**
* addPolylineWithData will addData to the polyline, then add it to the map
* @param {Polyline} polyline The polyline to add
* @param {Object} data A data has to add
*/
Mapstraction.prototype.addPolylineWithData = function(polyline, data) {
polyline.addData(data);
this.addPolyline(polyline);
};
/**
* removeMarker removes a Marker from the map
* @param {Marker} marker The marker to remove
*/
Mapstraction.prototype.removeMarker = function(marker) {
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var current_marker;
for(var i = 0; i < this.markers.length; i++){
current_marker = this.markers[i];
if(marker == current_marker) {
this.invoker.go('removeMarker', arguments);
marker.onmap = false;
this.markers.splice(i, 1);
this.markerRemoved.fire({'marker': marker});
break;
}
}
};
/**
* removeAllMarkers removes all the Markers on a map
*/
Mapstraction.prototype.removeAllMarkers = function() {
var current_marker;
while(this.markers.length > 0) {
current_marker = this.markers.pop();
this.invoker.go('removeMarker', [current_marker]);
}
};
/**
* Declutter the markers on the map, group together overlapping markers.
* @param {Object} opts Declutter options
*/
Mapstraction.prototype.declutterMarkers = function(opts) {
if(this.loaded[this.api] === false) {
var me = this;
this.onload[this.api].push( function() {
me.declutterMarkers(opts);
} );
return;
}
var map = this.maps[this.api];
switch(this.api)
{
// case 'yahoo':
//
// break;
// case 'openstreetmap':
//
// break;
// case 'microsoft':
//
// break;
// case 'openlayers':
//
// break;
case 'multimap':
/*
* Multimap supports quite a lot of decluttering options such as whether
* to use an accurate of fast declutter algorithm and what icon to use to
* represent a cluster. Using all this would mean abstracting all the enums
* etc so we're only implementing the group name function at the moment.
*/
map.declutterGroup(opts.groupName);
break;
// case 'mapquest':
//
// break;
// case 'map24':
//
// break;
case ' dummy':
break;
default:
if(this.debug) {
alert(this.api + ' not supported by Mapstraction.declutterMarkers');
}
}
};
/**
* Add a polyline to the map
* @param {Polyline} polyline The Polyline to add to the map
* @param {Boolean} old If true replaces an existing Polyline
*/
Mapstraction.prototype.addPolyline = function(polyline, old) {
polyline.api = this.api;
polyline.map = this.maps[this.api];
var propPoly = this.invoker.go('addPolyline', arguments);
polyline.setChild(propPoly);
if(!old) {
this.polylines.push(polyline);
}
this.polylineAdded.fire({'polyline': polyline});
};
// Private remove implementation
var removePolylineImpl = function(polyline) {
this.invoker.go('removePolyline', arguments);
polyline.onmap = false;
this.polylineRemoved.fire({'polyline': polyline});
};
/**
* Remove the polyline from the map
* @param {Polyline} polyline The Polyline to remove from the map
*/
Mapstraction.prototype.removePolyline = function(polyline) {
var current_polyline;
for(var i = 0; i < this.polylines.length; i++){
current_polyline = this.polylines[i];
if(polyline == current_polyline) {
this.polylines.splice(i, 1);
removePolylineImpl.call(this, polyline);
break;
}
}
};
/**
* Removes all polylines from the map
*/
Mapstraction.prototype.removeAllPolylines = function() {
var current_polyline;
while(this.polylines.length > 0) {
current_polyline = this.polylines.pop();
removePolylineImpl.call(this, current_polyline);
}
};
/**
* autoCenterAndZoom sets the center and zoom of the map to the smallest bounding box
* containing all markers
*/
Mapstraction.prototype.autoCenterAndZoom = function() {
var lat_max = -90;
var lat_min = 90;
var lon_max = -180;
var lon_min = 180;
var lat, lon;
var checkMinMax = function(){
if (lat > lat_max) {
lat_max = lat;
}
if (lat < lat_min) {
lat_min = lat;
}
if (lon > lon_max) {
lon_max = lon;
}
if (lon < lon_min) {
lon_min = lon;
}
};
for (var i = 0; i < this.markers.length; i++) {
lat = this.markers[i].location.lat;
lon = this.markers[i].location.lon;
checkMinMax();
}
for(i = 0; i < this.polylines.length; i++) {
for (var j = 0; j < this.polylines[i].points.length; j++) {
lat = this.polylines[i].points[j].lat;
lon = this.polylines[i].points[j].lon;
checkMinMax();
}
}
this.setBounds( new BoundingBox(lat_min, lon_min, lat_max, lon_max) );
};
/**
* centerAndZoomOnPoints sets the center and zoom of the map from an array of points
*
* This is useful if you don't want to have to add markers to the map
*/
Mapstraction.prototype.centerAndZoomOnPoints = function(points) {
var bounds = new BoundingBox(points[0].lat,points[0].lon,points[0].lat,points[0].lon);
for (var i=1, len = points.length ; i<len; i++) {
bounds.extend(points[i]);
}
this.setBounds(bounds);
};
/**
* Sets the center and zoom of the map to the smallest bounding box
* containing all visible markers and polylines
* will only include markers and polylines with an attribute of "visible"
*/
Mapstraction.prototype.visibleCenterAndZoom = function() {
var lat_max = -90;
var lat_min = 90;
var lon_max = -180;
var lon_min = 180;
var lat, lon;
var checkMinMax = function(){
if (lat > lat_max) {
lat_max = lat;
}
if (lat < lat_min) {
lat_min = lat;
}
if (lon > lon_max) {
lon_max = lon;
}
if (lon < lon_min) {
lon_min = lon;
}
};
for (var i=0; i<this.markers.length; i++) {
if (this.markers[i].getAttribute("visible")) {
lat = this.markers[i].location.lat;
lon = this.markers[i].location.lon;
checkMinMax();
}
}
for (i=0; i<this.polylines.length; i++){
if (this.polylines[i].getAttribute("visible")) {
for (j=0; j<this.polylines[i].points.length; j++) {
lat = this.polylines[i].points[j].lat;
lon = this.polylines[i].points[j].lon;
checkMinMax();
}
}
}
this.setBounds(new BoundingBox(lat_min, lon_min, lat_max, lon_max));
};
/**
* Automatically sets center and zoom level to show all polylines
* Takes into account radious of polyline
* @param {Int} radius
*/
Mapstraction.prototype.polylineCenterAndZoom = function(radius) {
var lat_max = -90;
var lat_min = 90;
var lon_max = -180;
var lon_min = 180;
for (var i=0; i < mapstraction.polylines.length; i++)
{
for (var j=0; j<mapstraction.polylines[i].points.length; j++)
{
lat = mapstraction.polylines[i].points[j].lat;
lon = mapstraction.polylines[i].points[j].lon;
latConv = lonConv = radius;
if (radius > 0)
{
latConv = (radius / mapstraction.polylines[i].points[j].latConv());
lonConv = (radius / mapstraction.polylines[i].points[j].lonConv());
}
if ((lat + latConv) > lat_max) {
lat_max = (lat + latConv);
}
if ((lat - latConv) < lat_min) {
lat_min = (lat - latConv);
}
if ((lon + lonConv) > lon_max) {
lon_max = (lon + lonConv);
}
if ((lon - lonConv) < lon_min) {
lon_min = (lon - lonConv);
}
}
}
this.setBounds(new BoundingBox(lat_min, lon_min, lat_max, lon_max));
};
/**
* addImageOverlay layers an georeferenced image over the map
* @param {id} unique DOM identifier
* @param {src} url of image
* @param {opacity} opacity 0-100
* @param {west} west boundary
* @param {south} south boundary
* @param {east} east boundary
* @param {north} north boundary
*/
Mapstraction.prototype.addImageOverlay = function(id, src, opacity, west, south, east, north) {
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var b = document.createElement("img");
b.style.display = 'block';
b.setAttribute('id',id);
b.setAttribute('src',src);
b.style.position = 'absolute';
b.style.zIndex = 1;
b.setAttribute('west',west);
b.setAttribute('south',south);
b.setAttribute('east',east);
b.setAttribute('north',north);
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var oContext = {
imgElm: b
};
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this.invoker.go('addImageOverlay', arguments, { context: oContext });
};
Mapstraction.prototype.setImageOpacity = function(id, opacity) {
if (opacity < 0) {
opacity = 0;
}
if (opacity >= 100) {
opacity = 100;
}
var c = opacity / 100;
var d = document.getElementById(id);
if(typeof(d.style.filter)=='string'){
d.style.filter='alpha(opacity:'+opacity+')';
}
if(typeof(d.style.KHTMLOpacity)=='string'){
d.style.KHTMLOpacity=c;
}
if(typeof(d.style.MozOpacity)=='string'){
d.style.MozOpacity=c;
}
if(typeof(d.style.opacity)=='string'){
d.style.opacity=c;
}
};
Mapstraction.prototype.setImagePosition = function(id) {
var imgElement = document.getElementById(id);
var oContext = {
latLng: {
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top: imgElement.getAttribute('north'),
left: imgElement.getAttribute('west'),
bottom: imgElement.getAttribute('south'),
right: imgElement.getAttribute('east')
},
pixels: { top: 0, right: 0, bottom: 0, left: 0 }
};
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this.invoker.go('setImagePosition', arguments, { context: oContext });
imgElement.style.top = oContext.pixels.top.toString() + 'px';
imgElement.style.left = oContext.pixels.left.toString() + 'px';
imgElement.style.width = (oContext.pixels.right - oContext.pixels.left).toString() + 'px';
imgElement.style.height = (oContext.pixels.bottom - oContext.pixels.top).toString() + 'px';
};
Mapstraction.prototype.addJSON = function(json) {
var features;
if (typeof(json) == "string") {
features = eval('(' + json + ')');
} else {
features = json;
}
features = features.features;
var map = this.maps[this.api];
var html = "";
var item;
var polyline;
var marker;
var markers = [];
if(features.type == "FeatureCollection") {
this.addJSON(features.features);
}
for (var i = 0; i < features.length; i++) {
item = features[i];
switch(item.geometry.type) {
case "Point":
html = "<strong>" + item.title + "</strong><p>" + item.description + "</p>";
marker = new Marker(new LatLonPoint(item.geometry.coordinates[1],item.geometry.coordinates[0]));
markers.push(marker);
this.addMarkerWithData(marker,{
infoBubble : html,
label : item.title,
date : "new Date(\""+item.date+"\")",
iconShadow : item.icon_shadow,
marker : item.id,
iconShadowSize : item.icon_shadow_size,
icon : "http://boston.openguides.org/markers/AQUA.png",
iconSize : item.icon_size,
category : item.source_id,
draggable : false,
hover : false
});
break;
case "Polygon":
var points = [];
polyline = new Polyline(points);
mapstraction.addPolylineWithData(polyline,{
fillColor : item.poly_color,
date : "new Date(\""+item.date+"\")",
category : item.source_id,
width : item.line_width,
opacity : item.line_opacity,
color : item.line_color,
polygon : true
});
markers.push(polyline);
break;
default:
// console.log("Geometry: " + features.items[i].geometry.type);
}
}
return markers;
};
/**
* Adds a Tile Layer to the map
*
* Requires providing a parameterized tile url. Use {Z}, {X}, and {Y} to specify where the parameters
* should go in the URL.
*
* For example, the OpenStreetMap tiles are:
* m.addTileLayer("http://tile.openstreetmap.org/{Z}/{X}/{Y}.png", 1.0, "OSM", 1, 19, true);
*
* @param {tile_url} template url of the tiles.
* @param {opacity} opacity of the tile layer - 0 is transparent, 1 is opaque. (default=0.6)
* @param {copyright_text} copyright text to use for the tile layer. (default=Mapstraction)
* @param {min_zoom} Minimum (furtherest out) zoom level that tiles are available (default=1)
* @param {max_zoom} Maximum (closest) zoom level that the tiles are available (default=18)
* @param {map_type} Should the tile layer be a selectable map type in the layers palette (default=false)
*/
Mapstraction.prototype.addTileLayer = function(tile_url, opacity, copyright_text, min_zoom, max_zoom, map_type) {
if(!tile_url) {
return;
}
this.tileLayers = this.tileLayers || [];
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opacity = opacity || 0.6;
copyright_text = copyright_text || "Mapstraction";
min_zoom = min_zoom || 1;
max_zoom = max_zoom || 18;
map_type = map_type || false;
return this.invoker.go('addTileLayer', [ tile_url, opacity, copyright_text, min_zoom, max_zoom, map_type] );
};
/**
* addFilter adds a marker filter
* @param {field} name of attribute to filter on
* @param {operator} presently only "ge" or "le"
* @param {value} the value to compare against
*/
Mapstraction.prototype.addFilter = function(field, operator, value) {
if (!this.filters) {
this.filters = [];
}
this.filters.push( [field, operator, value] );
};
/**
* Remove the specified filter
* @param {Object} field
* @param {Object} operator
* @param {Object} value
*/
Mapstraction.prototype.removeFilter = function(field, operator, value) {
if (!this.filters) {
return;
}
var del;
for (var f=0; f<this.filters.length; f++) {
if (this.filters[f][0] == field &&
(! operator || (this.filters[f][1] == operator && this.filters[f][2] == value))) {
this.filters.splice(f,1);
f--; //array size decreased
}
}
};
/**
* Delete the current filter if present; otherwise add it
* @param {Object} field
* @param {Object} operator
* @param {Object} value
*/
Mapstraction.prototype.toggleFilter = function(field, operator, value) {
if (!this.filters) {
this.filters = [];
}
var found = false;
for (var f = 0; f < this.filters.length; f++) {
if (this.filters[f][0] == field && this.filters[f][1] == operator && this.filters[f][2] == value) {
this.filters.splice(f,1);
f--; //array size decreased
found = true;
}
}
if (! found) {
this.addFilter(field, operator, value);
}
};
/**
* removeAllFilters
*/
Mapstraction.prototype.removeAllFilters = function() {
this.filters = [];
};
/**
* doFilter executes all filters added since last call
* Now supports a callback function for when a marker is shown or hidden
* @param {Function} showCallback
* @param {Function} hideCallback
* @returns {Int} count of visible markers
*/
Mapstraction.prototype.doFilter = function(showCallback, hideCallback) {
var map = this.maps[this.api];
var visibleCount = 0;
var f;
if (this.filters) {
switch (this.api) {
case 'multimap':
/* TODO polylines aren't filtered in multimap */
var mmfilters = [];
for (f=0; f<this.filters.length; f++) {
mmfilters.push( new MMSearchFilter( this.filters[f][0], this.filters[f][1], this.filters[f][2] ));
}
map.setMarkerFilters( mmfilters );
map.redrawMap();
break;
case ' dummy':
break;
default:
var vis;
for (var m=0; m<this.markers.length; m++) {
vis = true;
for (f = 0; f < this.filters.length; f++) {
if (! this.applyFilter(this.markers[m], this.filters[f])) {
vis = false;
}
}
if (vis) {
visibleCount ++;
if (showCallback){
showCallback(this.markers[m]);
}
else {
this.markers[m].show();
}
}
else {
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if (hideCallback){
hideCallback(this.markers[m]);
}
else {
this.markers[m].hide();
}
}
this.markers[m].setAttribute("visible", vis);
}
break;
}
}
return visibleCount;
};
Mapstraction.prototype.applyFilter = function(o, f) {
var vis = true;
switch (f[1]) {
case 'ge':
if (o.getAttribute( f[0] ) < f[2]) {
vis = false;
}
break;
case 'le':
if (o.getAttribute( f[0] ) > f[2]) {
vis = false;
}
break;
case 'eq':
if (o.getAttribute( f[0] ) == f[2]) {
vis = false;
}
break;
}
return vis;
};
/**
* getAttributeExtremes returns the minimum/maximum of "field" from all markers
* @param {field} name of "field" to query
* @returns {array} of minimum/maximum
*/
Mapstraction.prototype.getAttributeExtremes = function(field) {
var min;
var max;
for (var m=0; m<this.markers.length; m++) {
if (! min || min > this.markers[m].getAttribute(field)) {
min = this.markers[m].getAttribute(field);
}
if (! max || max < this.markers[m].getAttribute(field)) {
max = this.markers[m].getAttribute(field);
}
}
for (var p=0; m<this.polylines.length; m++) {
if (! min || min > this.polylines[p].getAttribute(field)) {
min = this.polylines[p].getAttribute(field);
}
if (! max || max < this.polylines[p].getAttribute(field)) {
max = this.polylines[p].getAttribute(field);
}
}
return [min, max];
};
/**
* getMap returns the native map object that mapstraction is talking to
* @returns the native map object mapstraction is using
*/
Mapstraction.prototype.getMap = function() {
// FIXME in an ideal world this shouldn't exist right?
return this.maps[this.api];
};
//////////////////////////////
//
// LatLonPoint
//
/////////////////////////////
/**
* LatLonPoint is a point containing a latitude and longitude with helper methods
* @name mxn.LatLonPoint
* @constructor
* @param {double} lat is the latitude
* @param {double} lon is the longitude
* @exports LatLonPoint as mxn.LatLonPoint
*/
var LatLonPoint = mxn.LatLonPoint = function(lat, lon) {
// TODO error if undefined?
// if (lat == undefined) alert('undefined lat');
// if (lon == undefined) alert('undefined lon');
this.lat = lat;
this.lon = lon;
this.lng = lon; // lets be lon/lng agnostic
this.invoker = new mxn.Invoker(this, 'LatLonPoint');
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};
mxn.addProxyMethods(LatLonPoint, [
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'fromProprietary', 'toProprietary'
], true);
/**
* toString returns a string represntation of a point
* @returns a string like '51.23, -0.123'
* @type String
*/
LatLonPoint.prototype.toString = function() {
return this.lat + ', ' + this.lon;
};
/**
* distance returns the distance in kilometers between two points
* @param {LatLonPoint} otherPoint The other point to measure the distance from to this one
* @returns the distance between the points in kilometers
* @type double
*/
LatLonPoint.prototype.distance = function(otherPoint) {
// Uses Haversine formula from http://www.movable-type.co.uk
var rads = Math.PI / 180;
var diffLat = (this.lat-otherPoint.lat) * rads;
var diffLon = (this.lon-otherPoint.lon) * rads;
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var a = Math.sin(diffLat / 2) * Math.sin(diffLat / 2) +
Math.cos(this.lat*rads) * Math.cos(otherPoint.lat*rads) *
Math.sin(diffLon/2) * Math.sin(diffLon/2);
2009-11-18 04:23:13 +00:00
return 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)) * 6371; // Earth's mean radius in km
};
/**
* equals tests if this point is the same as some other one
* @param {LatLonPoint} otherPoint The other point to test with
* @returns true or false
* @type boolean
*/
LatLonPoint.prototype.equals = function(otherPoint) {
return this.lat == otherPoint.lat && this.lon == otherPoint.lon;
};
/**
* Returns latitude conversion based on current projection
* @returns {Float} conversion
*/
LatLonPoint.prototype.latConv = function() {
return this.distance(new LatLonPoint(this.lat + 0.1, this.lon))*10;
};
/**
* Returns longitude conversion based on current projection
* @returns {Float} conversion
*/
LatLonPoint.prototype.lonConv = function() {
return this.distance(new LatLonPoint(this.lat, this.lon + 0.1))*10;
};
//////////////////////////
//
// BoundingBox
//
//////////////////////////
/**
* BoundingBox creates a new bounding box object
* @name mxn.BoundingBox
* @constructor
* @param {double} swlat the latitude of the south-west point
* @param {double} swlon the longitude of the south-west point
* @param {double} nelat the latitude of the north-east point
* @param {double} nelon the longitude of the north-east point
* @exports BoundingBox as mxn.BoundingBox
*/
var BoundingBox = mxn.BoundingBox = function(swlat, swlon, nelat, nelon) {
//FIXME throw error if box bigger than world
//alert('new bbox ' + swlat + ',' + swlon + ',' + nelat + ',' + nelon);
this.sw = new LatLonPoint(swlat, swlon);
this.ne = new LatLonPoint(nelat, nelon);
};
/**
* getSouthWest returns a LatLonPoint of the south-west point of the bounding box
* @returns the south-west point of the bounding box
* @type LatLonPoint
*/
BoundingBox.prototype.getSouthWest = function() {
return this.sw;
};
/**
* getNorthEast returns a LatLonPoint of the north-east point of the bounding box
* @returns the north-east point of the bounding box
* @type LatLonPoint
*/
BoundingBox.prototype.getNorthEast = function() {
return this.ne;
};
/**
* isEmpty finds if this bounding box has zero area
* @returns whether the north-east and south-west points of the bounding box are the same point
* @type boolean
*/
BoundingBox.prototype.isEmpty = function() {
return this.ne == this.sw; // is this right? FIXME
};
/**
* contains finds whether a given point is within a bounding box
* @param {LatLonPoint} point the point to test with
* @returns whether point is within this bounding box
* @type boolean
*/
BoundingBox.prototype.contains = function(point){
return point.lat >= this.sw.lat && point.lat <= this.ne.lat && point.lon >= this.sw.lon && point.lon <= this.ne.lon;
};
/**
* toSpan returns a LatLonPoint with the lat and lon as the height and width of the bounding box
* @returns a LatLonPoint containing the height and width of this bounding box
* @type LatLonPoint
*/
BoundingBox.prototype.toSpan = function() {
return new LatLonPoint( Math.abs(this.sw.lat - this.ne.lat), Math.abs(this.sw.lon - this.ne.lon) );
};
/**
* extend extends the bounding box to include the new point
*/
BoundingBox.prototype.extend = function(point) {
if(this.sw.lat > point.lat) {
this.sw.lat = point.lat;
}
if(this.sw.lon > point.lon) {
this.sw.lon = point.lon;
}
if(this.ne.lat < point.lat) {
this.ne.lat = point.lat;
}
if(this.ne.lon < point.lon) {
this.ne.lon = point.lon;
}
return;
};
//////////////////////////////
//
// Marker
//
///////////////////////////////
/**
* Marker create's a new marker pin
* @name mxn.Marker
* @constructor
* @param {LatLonPoint} point the point on the map where the marker should go
* @exports Marker as mxn.Marker
*/
var Marker = mxn.Marker = function(point) {
this.api = null;
this.location = point;
this.onmap = false;
this.proprietary_marker = false;
this.attributes = [];
this.invoker = new mxn.Invoker(this, 'Marker', function(){return this.api;});
mxn.addEvents(this, [
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'openInfoBubble', // Info bubble opened
'closeInfoBubble', // Info bubble closed
'click' // Marker clicked
]);
};
mxn.addProxyMethods(Marker, [
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'fromProprietary',
'hide',
'openBubble',
'show',
'toProprietary',
'update'
]);
Marker.prototype.setChild = function(some_proprietary_marker) {
this.proprietary_marker = some_proprietary_marker;
some_proprietary_marker.mapstraction_marker = this;
this.onmap = true;
};
Marker.prototype.setLabel = function(labelText) {
this.labelText = labelText;
};
/**
* addData conviniently set a hash of options on a marker
*/
Marker.prototype.addData = function(options){
for(var sOptKey in options) {
if(options.hasOwnProperty(sOptKey)){
switch(sOptKey) {
case 'label':
this.setLabel(options.label);
break;
case 'infoBubble':
this.setInfoBubble(options.infoBubble);
break;
case 'icon':
if(options.iconSize && options.iconAnchor) {
this.setIcon(options.icon, options.iconSize, options.iconAnchor);
}
else if(options.iconSize) {
this.setIcon(options.icon, options.iconSize);
}
else {
this.setIcon(options.icon);
}
break;
case 'iconShadow':
if(options.iconShadowSize) {
this.setShadowIcon(options.iconShadow, [ options.iconShadowSize[0], options.iconShadowSize[1] ]);
}
else {
this.setIcon(options.iconShadow);
}
break;
case 'infoDiv':
this.setInfoDiv(options.infoDiv[0],options.infoDiv[1]);
break;
case 'draggable':
this.setDraggable(options.draggable);
break;
case 'hover':
this.setHover(options.hover);
this.setHoverIcon(options.hoverIcon);
break;
case 'hoverIcon':
this.setHoverIcon(options.hoverIcon);
break;
case 'openBubble':
this.openBubble();
break;
case 'groupName':
this.setGroupName(options.groupName);
break;
default:
// don't have a specific action for this bit of
// data so set a named attribute
this.setAttribute(sOptKey, options[sOptKey]);
break;
}
}
}
};
/**
* setInfoBubble sets the html/text content for a bubble popup for a marker
* @param {String} infoBubble the html/text you want displayed
*/
Marker.prototype.setInfoBubble = function(infoBubble) {
this.infoBubble = infoBubble;
};
/**
* setInfoDiv sets the text and the id of the div element where to the information
* useful for putting information in a div outside of the map
* @param {String} infoDiv the html/text you want displayed
* @param {String} div the element id to use for displaying the text/html
*/
Marker.prototype.setInfoDiv = function(infoDiv,div){
this.infoDiv = infoDiv;
this.div = div;
};
/**
* setIcon sets the icon for a marker
* @param {String} iconUrl The URL of the image you want to be the icon
*/
Marker.prototype.setIcon = function(iconUrl, iconSize, iconAnchor) {
this.iconUrl = iconUrl;
if(iconSize) {
this.iconSize = iconSize;
}
if(iconAnchor) {
this.iconAnchor = iconAnchor;
}
};
/**
* setIconSize sets the size of the icon for a marker
* @param {String} iconSize The array size in pixels of the marker image
*/
Marker.prototype.setIconSize = function(iconSize){
if(iconSize) {
this.iconSize = iconSize;
}
};
/**
* setIconAnchor sets the anchor point for a marker
* @param {String} iconAnchor The array offset of the anchor point
*/
Marker.prototype.setIconAnchor = function(iconAnchor){
if(iconAnchor) {
this.iconAnchor = iconAnchor;
}
};
/**
* setShadowIcon sets the icon for a marker
* @param {String} iconUrl The URL of the image you want to be the icon
*/
Marker.prototype.setShadowIcon = function(iconShadowUrl, iconShadowSize){
this.iconShadowUrl = iconShadowUrl;
if(iconShadowSize) {
this.iconShadowSize = iconShadowSize;
}
};
Marker.prototype.setHoverIcon = function(hoverIconUrl){
this.hoverIconUrl = hoverIconUrl;
};
/**
* setDraggable sets the draggable state of the marker
* @param {Bool} draggable set to true if marker should be draggable by the user
*/
Marker.prototype.setDraggable = function(draggable) {
this.draggable = draggable;
};
/**
* setHover sets that the marker info is displayed on hover
* @param {Bool} hover set to true if marker should display info on hover
*/
Marker.prototype.setHover = function(hover) {
this.hover = hover;
};
/**
* Markers are grouped up by this name. declutterGroup makes use of this.
*/
Marker.prototype.setGroupName = function(sGrpName) {
this.groupName = sGrpName;
};
/**
* setAttribute: set an arbitrary key/value pair on a marker
* @arg(String) key
* @arg value
*/
Marker.prototype.setAttribute = function(key,value) {
this.attributes[key] = value;
};
/**
* getAttribute: gets the value of "key"
* @arg(String) key
* @returns value
*/
Marker.prototype.getAttribute = function(key) {
return this.attributes[key];
};
///////////////
// Polyline ///
///////////////
/**
* Instantiates a new Polyline.
* @name mxn.Polyline
* @constructor
* @param {Point[]} points Points that make up the Polyline.
* @exports Polyline as mxn.Polyline
*/
var Polyline = mxn.Polyline = function(points) {
this.api = null;
this.points = points;
this.attributes = [];
this.onmap = false;
this.proprietary_polyline = false;
this.pllID = "mspll-"+new Date().getTime()+'-'+(Math.floor(Math.random()*Math.pow(2,16)));
this.invoker = new mxn.Invoker(this, 'Polyline', function(){return this.api;});
};
mxn.addProxyMethods(Polyline, [
'fromProprietary',
2009-11-18 04:23:13 +00:00
'hide',
'show',
'toProprietary',
'update'
]);
/**
* addData conviniently set a hash of options on a polyline
*/
Polyline.prototype.addData = function(options){
for(var sOpt in options) {
if(options.hasOwnProperty(sOpt)){
switch(sOpt) {
case 'color':
this.setColor(options.color);
break;
case 'width':
this.setWidth(options.width);
break;
case 'opacity':
this.setOpacity(options.opacity);
break;
case 'closed':
this.setClosed(options.closed);
break;
case 'fillColor':
this.setFillColor(options.fillColor);
break;
default:
this.setAttribute(sOpt, options[sOpt]);
break;
}
}
}
};
Polyline.prototype.setChild = function(some_proprietary_polyline) {
this.proprietary_polyline = some_proprietary_polyline;
this.onmap = true;
};
/**
* in the form: #RRGGBB
* Note map24 insists on upper case, so we convert it.
*/
Polyline.prototype.setColor = function(color){
this.color = (color.length==7 && color[0]=="#") ? color.toUpperCase() : color;
};
/**
* Stroke width of the polyline
* @param {Integer} width
*/
Polyline.prototype.setWidth = function(width){
this.width = width;
};
/**
* A float between 0.0 and 1.0
* @param {Float} opacity
*/
Polyline.prototype.setOpacity = function(opacity){
this.opacity = opacity;
};
/**
* Marks the polyline as a closed polygon
* @param {Boolean} bClosed
*/
Polyline.prototype.setClosed = function(bClosed){
this.closed = bClosed;
};
/**
* Fill color for a closed polyline as HTML color value e.g. #RRGGBB
* @param {String} sFillColor HTML color value #RRGGBB
*/
Polyline.prototype.setFillColor = function(sFillColor) {
this.fillColor = sFillColor;
};
/**
* setAttribute: set an arbitrary key/value pair on a polyline
* @arg(String) key
* @arg value
*/
Polyline.prototype.setAttribute = function(key,value) {
this.attributes[key] = value;
};
/**
* getAttribute: gets the value of "key"
* @arg(String) key
* @returns value
*/
Polyline.prototype.getAttribute = function(key) {
return this.attributes[key];
};
/**
* Simplifies a polyline, averaging and reducing the points
* @param {Integer} tolerance (1.0 is a good starting point)
*/
Polyline.prototype.simplify = function(tolerance) {
var reduced = [];
// First point
reduced[0] = this.points[0];
var markerPoint = 0;
for (var i = 1; i < this.points.length-1; i++){
if (this.points[i].distance(this.points[markerPoint]) >= tolerance)
{
reduced[reduced.length] = this.points[i];
markerPoint = i;
}
}
// Last point
reduced[reduced.length] = this.points[this.points.length-1];
// Revert
this.points = reduced;
};
///////////////
// Radius //
///////////////
/**
* Creates a new radius object for drawing circles around a point, does a lot of initial calculation to increase load time
* @returns a new Radius
* @type Radius
* @constructor
* @classDescription Radius
* @param {Object} Center LatLonPoint of the radius
* @param {quality} Number of points that comprise the approximated circle (20 is a good starting point)
*/
var Radius = mxn.Radius = function(center, quality) {
this.center = center;
var latConv = center.latConv();
var lonConv = center.lonConv();
// Create Radian conversion constant
var rad = Math.PI / 180;
this.calcs = [];
for(var i = 0; i < 360; i += quality){
this.calcs.push([Math.cos(i * rad) / latConv, Math.sin(i * rad) / lonConv]);
}
};
/**
* Returns polyline of a circle around the point based on new radius
* @param {Radius} radius
* @param {Colour} colour
* @returns {Polyline} Polyline
*/
Radius.prototype.getPolyline = function(radius, colour) {
var points = [];
for(var i = 0; i < this.calcs.length; i++){
var point = new LatLonPoint(
this.center.lat + (radius * this.calcs[i][0]),
this.center.lon + (radius * this.calcs[i][1])
);
points.push(point);
}
// Add first point
points.push(points[0]);
var line = new Polyline(points);
line.setColor(colour);
return line;
};
})();