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leaflet-autolayers.js
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/*
The MIT License (MIT)
Copyright (c) 2016 Alex Ebadirad, https://github.com/aebadirad/Leaflet.AutoLayers
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
//we extend the control object to include the new AutoLayers object
L.Control.AutoLayers = L.Control.extend({
options: {
collapsed: true,
position: 'topright',
autoZIndex: true,
i18n: {
toggleButtonLayer:{
title: 'Layers',
href: '#'
},
controlLayerList:{
baseMaps:{
title: "Base Maps",
filter:{
placeholder: "Filter Base Layer"
}
},
overlays:{
title: "Overlays",
filter:{
placeholder: "Filter Overlay"
}
},
orderLayers:{
title: "Selected Overlays Order"
}
}
}
},
mapConfig: {},
mapLayers: [],
overLays: [],
baseMaps: [],
selectedOverlays: [],
zIndexBase: 1,
selectedBasemap: null,
layersToAdd: {},
countZIndexBase: function(layers) {
for (var i = 0; i < layers.length; i++) {
var layer = layers[i];
if (!layer.baseLayer) {
autoControl.zIndexBase++;
}
}
},
initialize: function(mapConfig, options) {
L.setOptions(this, options);
this.mapConfig = mapConfig;
this._layers = {};
this._lastZIndex = 0;
this._handlingClick = false;
this._initLayout();
var baseLayers = mapConfig.baseLayers;
var overlays = mapConfig.overlays;
var selectedBasemap = this.selectedBasemap = mapConfig.selectedBasemap;
for (var i in baseLayers) {
this._addLayer(baseLayers[i], i);
if (i === selectedBasemap) {
baseLayers[i].addTo(map);
}
}
for (var i in overlays) {
this._addLayer(overlays[i], i, true);
this.overLays[i] = overlays[i];
}
//incase we have no mapservers but still wish to add custom overlays pre-selected
this._selectOverlays();
this.fetchMapData();
},
onAdd: function(map) {
this._initEvents();
this._update();
map.on('layeradd', this._onLayerChange, this).on('layerremove', this._onLayerChange, this);
return this._container;
},
onRemove: function(map) {
map
.off('layeradd', this._onLayerChange, this)
.off('layerremove', this._onLayerChange, this);
},
addBaseLayer: function(layer, name) {
this._addLayer(layer, name);
this._update();
return this;
},
addOverlay: function(layer, name) {
this._addLayer(layer, name, true);
this._update();
return this;
},
removeLayer: function(layer) {
var id = L.stamp(layer);
delete this._layers[id];
this._update();
return this;
},
_initLayout: function() {
var className = 'leaflet-control-layers',
container = this._container = L.DomUtil.create('div', className);
//Makes this work on IE10 Touch devices by stopping it from firing a mouseout event when the touch is released
container.setAttribute('aria-haspopup', true);
if (!L.Browser.touch) {
L.DomEvent
.disableClickPropagation(container)
.disableScrollPropagation(container);
} else {
L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation);
}
var form = this._form = L.DomUtil.create('form', className + '-list');
if (this.options.collapsed) {
var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container);
link.href = this.options.i18n.toggleButtonLayer.href;
link.title = this.options.i18n.toggleButtonLayer.title;
if (L.Browser.touch) {
L.DomEvent
.on(link, 'click', L.DomEvent.stop)
.on(link, 'click', this._expand, this);
} else {
L.DomEvent.on(link, 'focus', this._expand, this);
}
//Work around for Firefox android issue https://github.com/Leaflet/Leaflet/issues/2033
L.DomEvent.on(form, 'click', function() {
setTimeout(L.bind(this._onInputClick, this), 0);
}, this);
// TODO keyboard accessibility
} else {
this._expand();
}
//base layers are made here
var baseLayersDiv = this._baseLayersDiv = L.DomUtil.create('div', 'leaflet-control-layers-tab',
form);
this._baseLayersTitle = L.DomUtil.create('div', 'leaflet-control-autolayers-title',
baseLayersDiv);
this._baseLayersTitle.innerHTML = this.options.i18n.controlLayerList.baseMaps.title;
this._baseLayersClose = L.DomUtil.create('span', 'leaflet-control-autolayers-close',
baseLayersDiv);
var baseLayersBox = this._baseLayersBox = L.DomUtil.create('div', 'map-filter', baseLayersDiv);
var baseLayersFilter = this._baseLayersFilter = L.DomUtil.create('input',
'map-filter-box-base', baseLayersBox);
baseLayersFilter.setAttribute('placeholder', this.options.i18n.controlLayerList.baseMaps.filter.placeholder);
baseLayersFilter.setAttribute('autocomplete', 'off');
this._baseLayersList = L.DomUtil.create('div', className + '-base', baseLayersDiv);
this._separator = L.DomUtil.create('div', className + '-separator', form);
//overlays are done here
var overlaysLayersDiv = this._overlaysDiv = L.DomUtil.create('div',
'leaflet-control-layers-tab', form);
this._overlaysLayersTitle = L.DomUtil.create('div', 'leaflet-control-autolayers-title',
overlaysLayersDiv);
this._overlaysLayersTitle.innerHTML = this.options.i18n.controlLayerList.overlays.title;
var overlaysLayersBox = this._overlaysLayersBox = L.DomUtil.create('div', 'map-filter',
overlaysLayersDiv);
var overlaysLayersFilter = this._overlaysLayersFilter = L.DomUtil.create('input',
'map-filter-box-overlays', overlaysLayersBox);
overlaysLayersFilter.setAttribute('placeholder', this.options.i18n.controlLayerList.overlays.filter.placeholder);
overlaysLayersFilter.setAttribute('autocomplete', 'off');
this._overlaysList = L.DomUtil.create('div', className + '-overlays', overlaysLayersDiv);
this._separator = L.DomUtil.create('div', className + '-separator', form);
//selected overlays are here
var selectedLayersDiv = this._selectedDiv = L.DomUtil.create('div',
'leaflet-control-layers-tab', form);
this._selectedLayersTitle = L.DomUtil.create('div', 'leaflet-control-autolayers-title',
selectedLayersDiv);
this._selectedLayersTitle.innerHTML = this.options.i18n.controlLayerList.orderLayers.title;
this._selectedList = L.DomUtil.create('div', className + '-selected', selectedLayersDiv);
container.appendChild(form);
//check to see if we have any preadded
return true;
},
_initEvents: function() {
var self = this;
var overlaysFilterBox = this._overlaysLayersFilter;
var baseFilterBox = this._baseLayersFilter;
//stop the traditional submit from occurring
L.DomEvent.addListener(overlaysFilterBox, 'submit', function(e) {
L.DomEvent.stopPropagation(e);
});
L.DomEvent.addListener(baseFilterBox, 'submit', function(e) {
L.DomEvent.stopPropagation(e);
});
//now we bind the filtering to each box
L.DomEvent.addListener(overlaysFilterBox, 'keyup', function(e) {
var filterBoxValue = this.value.toLowerCase();
var displayLayers = this.parentNode.parentNode.getElementsByClassName(
'leaflet-control-layers-overlays')[0].children;
if (filterBoxValue.length > 2) {
for (var i = 0; i < displayLayers.length; i++) {
if (displayLayers[i].innerText.toLowerCase().indexOf(
filterBoxValue) > -1) {
displayLayers[i].style.display = 'block';
} else {
displayLayers[i].style.display = 'none';
}
}
} else {
for (var i = 0; i < displayLayers.length; i++) {
displayLayers[i].style.display = 'block';
}
}
});
//now the baselayers filter box
L.DomEvent.addListener(baseFilterBox, 'keyup', function(e) {
var filterBoxValue = this.value.toLowerCase();
var displayLayers = this.parentNode.parentNode.getElementsByClassName(
'leaflet-control-layers-base')[0].children;
if (filterBoxValue.length > 2) {
for (var i = 0; i < displayLayers.length; i++) {
if (displayLayers[i].innerText.toLowerCase().indexOf(
filterBoxValue) > -1) {
displayLayers[i].style.display = 'block';
} else {
displayLayers[i].style.display = 'none';
}
}
} else {
for (var i = 0; i < displayLayers.length; i++) {
displayLayers[i].style.display = 'block';
}
}
});
//open and close setup
var titles = this._form.getElementsByClassName('leaflet-control-autolayers-title');
for (var t = 0; t < titles.length; t++) {
var baseMapsTitle = self.options.i18n.controlLayerList.baseMaps.title;
var overlaysTitle = self.options.i18n.controlLayerList.overlays.title;
L.DomEvent.addListener(titles[t], 'click', function(e) {
var overlayOrBase;
if (e.currentTarget.innerText === overlaysTitle) {
overlayOrBase = 'overlays';
}
if (e.currentTarget.innerText === baseMapsTitle) {
overlayOrBase = 'base';
}
var allTabs = this.parentNode.parentNode.getElementsByClassName(
'leaflet-control-layers-tab');
for (var i = 0; i < allTabs.length; i++) {
var tab = allTabs[i].getElementsByTagName('div');
for (var m = 0; m < tab.length; m++) {
var tabContent = tab[m];
if (tabContent.className !== 'leaflet-control-autolayers-title') {
tabContent.style.display = 'none';
}
}
}
var thisTab = this.parentNode.children;
for (var i = 0; i < thisTab.length; i++) {
thisTab[i].style.display = 'block';
var filter = thisTab[i].getElementsByClassName('map-filter-box-' + overlayOrBase);
if (filter.length > 0) {
filter[0].style.display = 'block';
}
}
if (e.currentTarget.innerText === overlaysTitle || e.currentTarget
.innerText === baseMapsTitle) {
var filterBoxValue = this.parentNode.getElementsByClassName('map-filter')[0].children[0].value
.toLowerCase();
var displayLayers = this.parentNode.getElementsByClassName('leaflet-control-layers-' +
overlayOrBase)[0].getElementsByTagName('label');
if (filterBoxValue.length > 2) {
for (var i = 0; i < displayLayers.length; i++) {
if (displayLayers[i].innerText.toLowerCase().indexOf(
filterBoxValue) > -1) {
displayLayers[i].style.display = 'block';
} else {
displayLayers[i].style.display = 'none';
}
}
}
} else {
// for (var i = 0; i < displayLayers.length; i++) {
// displayLayers[i].style.display = 'block';
// }
}
});
}
//x in the corner to close
var closeControl = this._baseLayersClose;
L.DomEvent.addListener(closeControl, 'click', function(e) {
this.parentNode.parentNode.parentNode.className = this.parentNode.parentNode.parentNode.className
.replace(
'leaflet-control-layers-expanded', '');
});
//fix pesky zooming, have to dynamically measure the hidden div too! Make sure you do that!
var overlayBox = this._overlaysList;
L.DomEvent.addListener(overlayBox, 'mousewheel', function(e) {
var delta = e.wheelDelta || -e.detail;
this.scrollTop += (delta < 0 ? 1 : -1) * 30;
e.preventDefault();
});
var baseBox = this._baseLayersList;
L.DomEvent.addListener(baseBox, 'mousewheel', function(e) {
var delta = e.wheelDelta || -e.detail;
this.scrollTop += (delta < 0 ? 1 : -1) * 30;
e.preventDefault();
});
var selectedBox = this._selectedList;
L.DomEvent.addListener(selectedBox, 'mousewheel', function(e) {
var delta = e.wheelDelta || -e.detail;
this.scrollTop += (delta < 0 ? 1 : -1) * 30;
e.preventDefault();
});
//make sure we collapse the control on mapclick
this._map.on('click', this._collapse, this);
},
_initMaps: function(mapLayers) {
var mapConfig = this.mapConfig;
var self = this;
var selected;
for (var i = 0; i < mapLayers.length; i++) {
var mapLayer = mapLayers[i];
if (!mapLayer.baseLayer) {
self.zIndexBase++;
}
//set some default layer options
var layerOpts = {
noWrap: mapConfig.noWrap === false ? mapConfig.noWrap : true,
continuousWorld: mapConfig.continuousWorld === true ? mapConfig.continuousWorld : false,
tileSize: mapConfig.tileSize ? mapConfig.tileSize : 256,
tms: mapLayer.tms ? mapLayer.tms : false,
zoomOffset: mapLayer.zoomOffset ? mapLayer.zoomOffset : 0,
minZoom: 0,
maxZoom: mapConfig.maxZoom ? mapConfig.maxZoom : 15,
attribution: mapLayer.attribution ? mapLayer.attribution : 'Source Currently Unknown'
};
var layer;
if (mapLayer.type === 'wms') {
layer = L.tileLayer.wms(mapLayer.url, {
layers: mapLayer.name,
format: 'image/png',
maxZoom: 16,
transparent: true
});
mapLayer.name = mapLayer.title;
//self.baseMaps[mapLayer.name] = layer;
} else {
layer = new L.tileLayer(mapLayer.url, layerOpts);
}
if (mapLayer.baseLayer) {
self.baseMaps[String(mapLayer.name).trim()] = layer;
self._addLayer(layer, mapLayer.name);
} else {
self.overLays[String(mapLayer.name).trim()] = layer;
self._addLayer(layer, mapLayer.name, true);
}
if (mapLayer.baseLayer && !self.selectedBasemap) {
self.selectedBasemap = mapLayer.name.trim();
layer.addTo(map);
} else if (mapLayer.name === self.selectedBasemap && mapLayer.baseLayer) {
self.selectedBasemap = mapLayer.name.trim();
layer.addTo(map);
}
}
this._selectOverlays();
},
fetchMapData: function() {
var mapServers = this.mapConfig.mapServers;
var self = this;
var mapLayers = [];
if (mapServers) {
for (var i = 0; i < mapServers.length; i++) {
var layers = this.fetchMapDictionary(mapServers[i]);
}
}
},
fetchMapDictionary: function(mapServer) {
var self = this;
var layers = [];
this.layersToAdd[mapServer.name] = [];
var url = mapServer.dictionary.replace(/&/g, '&');
ajax(url, function(res) {
if (mapServer.type === 'esri') {
var response = JSON.parse(res);
var layersToAdd = self._parseESRILayers(mapServer, response, false);
if (layersToAdd && layersToAdd.length > 0) {
layers = layersToAdd;
}
} else if (mapServer.type === 'nrltileserver') {
var x2js = new X2JS();
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(res, "text/xml");
var parsedRes = x2js.xml2json(xmlDoc);
var capability = parsedRes.WMT_MS_Capabilities.Capability.Layer;
var capLayers = capability.Layer;
var contactInfo = parsedRes.WMT_MS_Capabilities.Service.ContactInformation;
var crs = parseInt(capability.SRS.substring(5));
var layersToAdd = self._parseNRLLayers(mapServer, capLayers, contactInfo, crs);
if (layersToAdd && layersToAdd.length > 0) {
layers = layersToAdd;
}
} else if (mapServer.type === 'wms') {
var x2js = new X2JS();
var parser = new DOMParser();
var xmlDoc = parser.parseFromString(res, "text/xml");
var parsedRes = x2js.xml2json(xmlDoc);
var capability = parsedRes.WMS_Capabilities.Capability.Layer;
var capLayers = capability.Layer;
var contactInfo = parsedRes.WMS_Capabilities.Service.ContactInformation;
var crs = capability.CRS[0];
var layersToAdd = self._parseWMSLayers(mapServer, capLayers, contactInfo, crs);
if (layersToAdd && layersToAdd.length > 0) {
layers = layersToAdd;
}
}
//let's filter this list of any nulls (blacklists)
layers = layers.filter(function(l) {
return (l !== undefined && l !== null);
});
self.mapLayers.push(layers);
self._initMaps(layers);
});
},
_parseESRILayers: function(mapServer, response) {
var self = this;
//check to see if we have any root folder layers
var services = response.services;
var folders = [];
var layers = [];
var layersToAdd = [];
//check to see if any folders, if none it'll be empty array
folders = response.folders;
for (var i = 0; i < services.length; i++) {
if (services[i].type === 'MapServer') {
layersToAdd.push(self._parseESRILayer(mapServer, services[i], false));
}
}
//now we check folders, why? we don't want calls within calls
if (folders.length > 0) {
layersToAdd.concat(self._parseESRIFolders(mapServer, folders));
}
return layersToAdd;
},
_parseESRIFolders: function(mapServer, folders) {
var self = this;
var layersToAdd = [];
for (var f = 0; f < folders.length; f++) {
var folderUrl = mapServer.url + '/' + folders[f] +
'?f=pjson';
ajax(folderUrl, function(res) {
var response = JSON.parse(res);
//check to see if we have any layers here
var services = response.services;
for (var i = 0; i < services.length; i++) {
if (services[i].type === 'MapServer') {
layersToAdd.push(self._parseESRILayer(mapServer, services[i], true));
}
}
});
}
return layersToAdd;
},
_parseESRILayer: function(mapServer, layer, folder) {
var layerToAdd = [];
if (folder) {
var fullName = layer.name.split('/');
var layerName = fullName[1];
var folderName = fullName[0];
var layerUrl = mapServer.url + '/' + folderName +
'/' + layerName + mapServer.tileUrl;
var url = mapServer.url + '/' + folderName +
'/' + layerName + '/MapServer?f=pjson';
} else {
var layerName = layer.name;
var layerUrl = mapServer.url + '/' + layerName +
mapServer.tileUrl;
var url = mapServer.url + '/' + layerName +
'/MapServer?f=pjson';
}
var layerObj = {
detailsUrl: url,
url: layerUrl,
name: layerName,
type: 'esri',
attribution: mapServer.name + ' - ' + layerName
};
layerToAdd = this._createLayer(mapServer, layerObj, layerName);
return layerToAdd;
},
_parseNRLLayers: function(mapServer, layers, contactInfo, crs) {
var self = this;
for (var j = 0; j < layers.length; j++) {
var layer = layers[j];
if (layer.Layer && layer.Layer.length > 1) {
self.layersToAdd[mapServer.name].concat(self._parseNRLLayers(mapServer, layer.Layer,
contactInfo, crs));
} else {
self.layersToAdd[mapServer.name].push(self._parseNRLLayer(mapServer, layer, contactInfo, crs));
}
}
return this.layersToAdd[mapServer.name];
},
_parseNRLLayer: function(mapServer, layer, contactInfo, crs) {
var layerToAdd = [];
var layerObj = {
crs: crs,
maxZoom: 18,
name: layer.Title,
type: 'nrl',
zoomOffset: 2,
tms: false,
noWrap: false,
continuousWorld: true,
attribution: mapServer.name + ': ' + contactInfo.ContactPersonPrimary
.ContactOrganization + ' - ' + layer.Title,
url: mapServer.url + '/openlayers/' + layer.Name +
mapServer.tileUrl
};
layerToAdd = this._createLayer(mapServer, layerObj, layer.Name);
return layerToAdd;
},
_parseWMSLayers: function(mapServer, layers, contactInfo, crs) {
var self = this;
for (var j = 0; j < layers.length; j++) {
var layer = layers[j];
if (layer.Layer && layer.Layer.length > 1) {
self.layersToAdd[mapServer.name].concat(self._parseWMSLayers(mapServer, layer.Layer,
contactInfo, crs));
} else {
self.layersToAdd[mapServer.name].push(self._parseWMSLayer(mapServer, layer, contactInfo, crs));
}
}
return this.layersToAdd[mapServer.name];
},
_parseWMSLayer: function(mapServer, layer, contactInfo, crs) {
var layerToAdd = [];
var layerObj = {
crs: crs,
maxZoom: 18,
name: layer.Name,
type: 'wms',
zoomOffset: 1,
tms: false,
noWrap: false,
continuousWorld: true,
title: layer.Title,
attribution: mapServer.name + ': ' + contactInfo.ContactPersonPrimary
.ContactOrganization + ' - ' + layer.Title,
url: mapServer.url
};
layerToAdd = this._createLayer(mapServer, layerObj, layer.Title);
return layerToAdd;
},
_createLayer: function(mapServer, layer, name) {
var blacklist = mapServer.blacklist;
var whitelist = mapServer.whitelist;
var layerToAdd = null;
var mapPass = -1;
if (mapServer.baseLayers) {
mapPass = mapServer.baseLayers.indexOf(name);
}
if ((whitelist && whitelist.indexOf(name) > -1) || (blacklist && blacklist.indexOf(
name) === -1) || (!blacklist && !whitelist)) {
if (!(mapServer.baseLayers) || mapPass > -1) {
layer.baseLayer = true;
} else {
layer.baseLayer = false;
}
layerToAdd = layer;
}
return layerToAdd;
},
_getLayerByName: function(name) {
var response;
for (var key in this._layers) {
var layer = this._layers[key];
var layerName = layer.name;
if (layerName == name) {
response = layer;
break;
}
}
return response;
},
_addSelectedOverlay: function(name) {
if (this.selectedOverlays.indexOf(name) === -1) {
this.selectedOverlays.unshift(name);
this._buildSelectedOverlays();
}
},
_buildSelectedOverlays: function() {
var self = this;
var selectedOverlays = this.selectedOverlays;
var container = this._selectedList;
container.innerHTML = '';
for (var i = 0; i < selectedOverlays.length; i++) {
var name = selectedOverlays[i];
var selectedLabel = L.DomUtil.create('label', 'selected-label');
var selectedRemove = L.DomUtil.create('span', 'selected-remove', selectedLabel);
var selectedName = L.DomUtil.create('span', 'selected-name', selectedLabel);
selectedName.innerHTML = name;
var selectedUp;
var selectedDown;
if (selectedOverlays.length === 1) {
selectedUp = L.DomUtil.create('span', 'selected-none', selectedLabel);
selectedDown = L.DomUtil.create('span', 'selected-none', selectedLabel);
} else {
if (selectedOverlays.length === (i + 1)) {
selectedUp = L.DomUtil.create('span', 'selected-up', selectedLabel);
selectedDown = L.DomUtil.create('span', 'selected-none', selectedLabel);
} else if (i === 0) {
selectedUp = L.DomUtil.create('span', 'selected-none', selectedLabel);
selectedDown = L.DomUtil.create('span', 'selected-down', selectedLabel);
} else {
selectedUp = L.DomUtil.create('span', 'selected-up', selectedLabel);
selectedDown = L.DomUtil.create('span', 'selected-down', selectedLabel);
}
}
container.appendChild(selectedLabel);
L.DomEvent.addListener(selectedRemove, 'click', function(e) {
var name = this.parentNode.getElementsByClassName('selected-name')[0].innerHTML;
var layer = self._getLayerByName(name);
self._map.removeLayer(layer.layer);
});
//Now setup for up and down ordering
L.DomEvent.addListener(selectedUp, 'click', function(e) {
var name = this.parentNode.getElementsByClassName('selected-name')[0].innerHTML;
self._upSelectedOverlay(name);
});
L.DomEvent.addListener(selectedDown, 'click', function(e) {
var name = this.parentNode.getElementsByClassName('selected-name')[0].innerHTML;
self._downSelectedOverlay(name);
});
}
},
_removeSelectedOverlay: function(name) {
if (this.selectedOverlays.indexOf(name) > -1) {
this.selectedOverlays.splice(this.selectedOverlays.indexOf(name), 1);
this._buildSelectedOverlays();
}
},
_upSelectedOverlay: function(name) {
var overlays = this.selectedOverlays;
var selectedIndex = overlays.indexOf(name);
var upSelectedIndex = selectedIndex - 1;
if (upSelectedIndex > -1) {
var tempLayer = overlays[selectedIndex];
overlays[selectedIndex] = overlays[upSelectedIndex];
overlays[upSelectedIndex] = tempLayer;
}
this.selectedOverlays = overlays;
return this._reOrderOverlay();
},
_downSelectedOverlay: function(name) {
var overlays = this.selectedOverlays;
var selectedIndex = overlays.indexOf(name);
var upSelectedIndex = selectedIndex;
upSelectedIndex++;
if (upSelectedIndex < overlays.length) {
var tempLayer = overlays[upSelectedIndex];
overlays[upSelectedIndex] = overlays[selectedIndex];
overlays[selectedIndex] = tempLayer;
}
this.selectedOverlays = overlays;
return this._reOrderOverlay();
},
_reOrderOverlay: function() {
var self = this;
var zIndexBase = this.zIndexBase;
var overlays = this.selectedOverlays;
var totalSelected = overlays.length;
var maxBase = zIndexBase + totalSelected;
for (var i = 0; i < overlays.length; i++) {
var layerName = overlays[i];
var layer = self._getLayerByName(layerName).layer;
layer.setZIndex(maxBase);
maxBase--;
};
return this._buildSelectedOverlays();
},
_selectOverlays: function() {
var selectedOverlays = this.mapConfig.selectedOverlays;
var overLays = this.overLays;
for (var i = 0; i < selectedOverlays.length; i++) {
var overlay = selectedOverlays[i];
if (overLays[overlay]) {
overLays[overlay].addTo(map);
this._addSelectedOverlay(selectedOverlays[i]);
}
}
},
_addLayer: function(layer, name, overlay) {
var id = L.stamp(layer);
this._layers[id] = {
layer: layer,
name: name,
overlay: overlay
};
if (this.options.autoZIndex && layer.setZIndex && overlay) {
this._lastZIndex++;
layer.setZIndex(this._lastZIndex);
} else {
layer.setZIndex(0);
}
},
_update: function() {
if (!this._container) {
return;
}
this._baseLayersList.innerHTML = '';
this._overlaysList.innerHTML = '';
var baseLayersPresent = false,
overlaysPresent = false,
i, obj;
for (i in this._layers) {
obj = this._layers[i];
this._addItem(obj);
overlaysPresent = overlaysPresent || obj.overlay;
baseLayersPresent = baseLayersPresent || !obj.overlay;
}
this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none';
},
_onLayerChange: function(e) {
var obj = this._layers[L.stamp(e.layer)];
var self = this;
if (!obj) {
return;
}
if (!this._handlingClick) {
this._update();
}
var type = obj.overlay ?
(e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') :
(e.type === 'layeradd' ? 'baselayerchange' : null);
if (type) {
this._map.fire(type, obj);
}
if (type === 'overlayadd') {
this._addSelectedOverlay(obj.name);
e.layer.setZIndex(this.zIndexBase)
}
if (type === 'overlayremove') {
this._removeSelectedOverlay(obj.name);
}
},
// IE7 bugs out if you create a radio dynamically, so you have to do it this hacky way (see http://bit.ly/PqYLBe)
_createRadioElement: function(name, checked) {
var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name +
'"';
if (checked) {
radioHtml += ' checked="checked"';
}
radioHtml += '/>';
var radioFragment = document.createElement('div');
radioFragment.innerHTML = radioHtml;
return radioFragment.firstChild;
},
_addItem: function(obj) {
var label = document.createElement('label'),
input,
checked = this._map.hasLayer(obj.layer);
if (obj.overlay) {
input = document.createElement('input');
input.type = 'checkbox';
input.className = 'leaflet-control-layers-selector';
input.defaultChecked = checked;
} else {
input = this._createRadioElement('leaflet-base-layers', checked);
}
input.layerId = L.stamp(obj.layer);
L.DomEvent.on(input, 'click', this._onInputClick, this);
var name = document.createElement('span');
name.innerHTML = ' ' + obj.name;
label.appendChild(input);
label.appendChild(name);
var container = obj.overlay ? this._overlaysList : this._baseLayersList;
container.appendChild(label);
return label;
},
_onInputClick: function() {
var i, input, obj,
inputs = this._form.getElementsByTagName('input'),
inputsLen = inputs.length;
this._handlingClick = true;
for (var i = 0; i < inputsLen; i++) {
input = inputs[i];
obj = this._layers[input.layerId];
if (input.type === 'checkbox' || input.type === "radio") {
if (input.checked && !this._map.hasLayer(obj.layer)) {
this._map.addLayer(obj.layer);
} else if (!input.checked && this._map.hasLayer(obj.layer)) {
this._map.removeLayer(obj.layer);
}
}
}
this._handlingClick = false;
//keep this commented out so we don't lose focus
//this._refocusOnMap();
},
_expand: function() {
L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded');
},
_collapse: function() {
this._container.className = this._container.className.replace(
' leaflet-control-layers-expanded', '');
}
});
//to conform to leaflet recommendations, here's the factory
L.control.autolayers = function(mapConfig, options) {
return new L.Control.AutoLayers(mapConfig, options);
};
//Here we also override the attribution control's update method to better suit tons of layers
L.Control.Attribution = L.Control.Attribution.extend({
_update: function() {
if (!this._map) {
return;
}
var attribs = [];
for (var i in this._attributions) {
if (this._attributions[i]) {
attribs.push(i);
}
}
var prefixAndAttribs = [];
if (this.options.prefix) {
prefixAndAttribs.push(this.options.prefix);
}
if (attribs.length) {
prefixAndAttribs.push(attribs.join(' <br /> '));
}
this._container.innerHTML = prefixAndAttribs.join(' | ');
}
});
// Simple AJAX helper (since we can't assume jQuery etc. are present)
//credit to Houston Engineering, INC www.heigeo.com
function ajax(url, callback) {
var context = this,
request = new XMLHttpRequest();
request.onreadystatechange = change;
request.open('GET', url, true);
request.send();
function change() {
if (request.readyState === 4) {
if (request.status === 200) {
callback.call(context, request.responseText);
} else {
callback.call(context, "error");
}
}
}
};
// Below is a version of x2js
/*
Copyright 2011-2013 Abdulla Abdurakhmanov
Original sources are available at https://code.google.com/p/x2js/
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
(function(a, b) {
if (typeof define === "function" && define.amd) {
define([], b);
} else {
if (typeof exports === "object") {
module.exports = b();