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Add marker clustering and grouped layer control
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| Original file line number | Diff line number | Diff line change |
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| Copyright 2013 Ishmael Smyrnow | ||
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| 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: | ||
|
|
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| The above copyright notice and this permission notice shall be | ||
| included in all copies or substantial portions of the Software. | ||
|
|
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| 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. |
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assets/leaflet-groupedlayercontrol/leaflet.groupedlayercontrol.js
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| // A layer control which provides for layer groupings. | ||
| // Author: Ishmael Smyrnow | ||
| L.Control.GroupedLayers = L.Control.extend({ | ||
| options: { | ||
| collapsed: true, | ||
| position: 'topright', | ||
| autoZIndex: true | ||
| }, | ||
|
|
||
| initialize: function (baseLayers, groupedOverlays, options) { | ||
| L.Util.setOptions(this, options); | ||
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| this._layers = {}; | ||
| this._lastZIndex = 0; | ||
| this._handlingClick = false; | ||
| this._groupList = []; | ||
| this._domGroups = []; | ||
|
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| for (var i in baseLayers) { | ||
| this._addLayer(baseLayers[i], i); | ||
| } | ||
|
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| for (i in groupedOverlays) { | ||
| for (j in groupedOverlays[i]) { | ||
| this._addLayer(groupedOverlays[i][j], j, i, true); | ||
| } | ||
| } | ||
| }, | ||
|
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| onAdd: function (map) { | ||
| this._initLayout(); | ||
| this._update(); | ||
|
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| map | ||
| .on('layeradd', this._onLayerChange, this) | ||
| .on('layerremove', this._onLayerChange, this); | ||
|
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| return this._container; | ||
| }, | ||
|
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| onRemove: function (map) { | ||
| map | ||
| .off('layeradd', this._onLayerChange) | ||
| .off('layerremove', this._onLayerChange); | ||
| }, | ||
|
|
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| addBaseLayer: function (layer, name) { | ||
| this._addLayer(layer, name); | ||
| this._update(); | ||
| return this; | ||
| }, | ||
|
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| addOverlay: function (layer, name, group) { | ||
| this._addLayer(layer, name, group, true); | ||
| this._update(); | ||
| return this; | ||
| }, | ||
|
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| removeLayer: function (layer) { | ||
| var id = L.Util.stamp(layer); | ||
| delete this._layers[id]; | ||
| this._update(); | ||
| return this; | ||
| }, | ||
|
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| _initLayout: function () { | ||
| var className = 'leaflet-control-layers', | ||
| container = this._container = L.DomUtil.create('div', className); | ||
|
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| //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); | ||
|
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| if (!L.Browser.touch) { | ||
| L.DomEvent.disableClickPropagation(container); | ||
| L.DomEvent.on(container, 'wheel', L.DomEvent.stopPropagation); | ||
| } else { | ||
| L.DomEvent.on(container, 'click', L.DomEvent.stopPropagation); | ||
| } | ||
|
|
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| var form = this._form = L.DomUtil.create('form', className + '-list'); | ||
|
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| if (this.options.collapsed) { | ||
| if (!L.Browser.android) { | ||
| L.DomEvent | ||
| .on(container, 'mouseover', this._expand, this) | ||
| .on(container, 'mouseout', this._collapse, this); | ||
| } | ||
| var link = this._layersLink = L.DomUtil.create('a', className + '-toggle', container); | ||
| link.href = '#'; | ||
| link.title = 'Layers'; | ||
|
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| 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); | ||
| } | ||
|
|
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| this._map.on('click', this._collapse, this); | ||
| // TODO keyboard accessibility | ||
| } else { | ||
| this._expand(); | ||
| } | ||
|
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| this._baseLayersList = L.DomUtil.create('div', className + '-base', form); | ||
| this._separator = L.DomUtil.create('div', className + '-separator', form); | ||
| this._overlaysList = L.DomUtil.create('div', className + '-overlays', form); | ||
|
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| container.appendChild(form); | ||
| }, | ||
|
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| _addLayer: function (layer, name, group, overlay) { | ||
| var id = L.Util.stamp(layer); | ||
|
|
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| this._layers[id] = { | ||
| layer: layer, | ||
| name: name, | ||
| overlay: overlay | ||
| }; | ||
|
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| if (group) { | ||
| var groupId = this._groupList.indexOf(group); | ||
|
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| if (groupId === -1) { | ||
| groupId = this._groupList.push(group) - 1; | ||
| } | ||
|
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| this._layers[id].group = { | ||
| name: group, | ||
| id: groupId | ||
| }; | ||
| } | ||
|
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| if (this.options.autoZIndex && layer.setZIndex) { | ||
| this._lastZIndex++; | ||
| layer.setZIndex(this._lastZIndex); | ||
| } | ||
| }, | ||
|
|
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| _update: function () { | ||
| if (!this._container) { | ||
| return; | ||
| } | ||
|
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| this._baseLayersList.innerHTML = ''; | ||
| this._overlaysList.innerHTML = ''; | ||
| this._domGroups.length = 0; | ||
|
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| var baseLayersPresent = false, | ||
| overlaysPresent = false, | ||
| i, obj; | ||
|
|
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| for (i in this._layers) { | ||
| obj = this._layers[i]; | ||
| this._addItem(obj); | ||
| overlaysPresent = overlaysPresent || obj.overlay; | ||
| baseLayersPresent = baseLayersPresent || !obj.overlay; | ||
| } | ||
|
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| this._separator.style.display = overlaysPresent && baseLayersPresent ? '' : 'none'; | ||
| }, | ||
|
|
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| _onLayerChange: function (e) { | ||
| var obj = this._layers[L.Util.stamp(e.layer)]; | ||
|
|
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| if (!obj) { return; } | ||
|
|
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| if (!this._handlingClick) { | ||
| this._update(); | ||
| } | ||
|
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| var type = obj.overlay ? | ||
| (e.type === 'layeradd' ? 'overlayadd' : 'overlayremove') : | ||
| (e.type === 'layeradd' ? 'baselayerchange' : null); | ||
|
|
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| if (type) { | ||
| this._map.fire(type, obj); | ||
| } | ||
| }, | ||
|
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| // 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) { | ||
|
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| var radioHtml = '<input type="radio" class="leaflet-control-layers-selector" name="' + name + '"'; | ||
| if (checked) { | ||
| radioHtml += ' checked="checked"'; | ||
| } | ||
| radioHtml += '/>'; | ||
|
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| var radioFragment = document.createElement('div'); | ||
| radioFragment.innerHTML = radioHtml; | ||
|
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| return radioFragment.firstChild; | ||
| }, | ||
|
|
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| _addItem: function (obj) { | ||
| var label = document.createElement('label'), | ||
| input, | ||
| checked = this._map.hasLayer(obj.layer); | ||
|
|
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| 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); | ||
| } | ||
|
|
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| input.layerId = L.Util.stamp(obj.layer); | ||
|
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| L.DomEvent.on(input, 'click', this._onInputClick, this); | ||
|
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| var name = document.createElement('span'); | ||
| name.innerHTML = ' ' + obj.name; | ||
|
|
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| label.appendChild(input); | ||
| label.appendChild(name); | ||
|
|
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| if (obj.overlay) { | ||
| container = this._overlaysList; | ||
|
|
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| var groupContainer = this._domGroups[obj.group.id]; | ||
|
|
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| // Create the group container if it doesn't exist | ||
| if (!groupContainer) { | ||
| groupContainer = document.createElement('div'); | ||
| groupContainer.className = 'leaflet-control-layers-group'; | ||
| groupContainer.id = 'leaflet-control-layers-group-' + obj.group.id; | ||
|
|
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| var groupLabel = document.createElement('span'); | ||
| groupLabel.className = 'leaflet-control-layers-group-name'; | ||
| groupLabel.innerHTML = obj.group.name; | ||
|
|
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| groupContainer.appendChild(groupLabel); | ||
| container.appendChild(groupContainer); | ||
|
|
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| this._domGroups[obj.group.id] = groupContainer; | ||
| } | ||
|
|
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| container = groupContainer; | ||
| } else { | ||
| container = this._baseLayersList; | ||
| } | ||
|
|
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| container.appendChild(label); | ||
|
|
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| return label; | ||
| }, | ||
|
|
||
| _onInputClick: function () { | ||
| var i, input, obj, | ||
| inputs = this._form.getElementsByTagName('input'), | ||
| inputsLen = inputs.length; | ||
|
|
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| this._handlingClick = true; | ||
|
|
||
| for (i = 0; i < inputsLen; i++) { | ||
| input = inputs[i]; | ||
| obj = this._layers[input.layerId]; | ||
|
|
||
| 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); | ||
| } | ||
| } | ||
|
|
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| this._handlingClick = false; | ||
| }, | ||
|
|
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| _expand: function () { | ||
| L.DomUtil.addClass(this._container, 'leaflet-control-layers-expanded'); | ||
| }, | ||
|
|
||
| _collapse: function () { | ||
| this._container.className = this._container.className.replace(' leaflet-control-layers-expanded', ''); | ||
| } | ||
| }); | ||
|
|
||
| L.control.groupedLayers = function (baseLayers, groupedOverlays, options) { | ||
| return new L.Control.GroupedLayers(baseLayers, groupedOverlays, options); | ||
| }; |
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