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/**
* A layer that will display indoor data
*
* addData takes a GeoJSON feature collection, each feature must have a level
* property that indicates the level.
*
* getLevels can be called to get the array of levels that are present.
*/
L.Indoor = L.Class.extend({
options: {
// by default the levels are expected to be in the level attribute in
// the feature properties, pass a replacement function in options if
// this is not the case.
getLevel: function(feature) {
return feature.properties.level;
}
},
initialize: function(data, options) {
L.setOptions(this, options);
options = this.options;
var layers = this._layers = {};
this._map = null;
if ("level" in this.options) {
this._level = this.options.level;
} else {
this._level = null;
}
if ("onEachFeature" in this.options)
var onEachFeature = this.options.onEachFeature;
this.options.onEachFeature = function(feature, layer) {
if (onEachFeature)
onEachFeature(feature, layer);
if ("markerForFeature" in options) {
var marker = options.markerForFeature(feature);
if (typeof(marker) !== 'undefined') {
marker.on('click', function(e) {
layer.fire('click', e);
});
var level = options.getLevel(feature);
if (typeof(level) === 'undefined') {
console.warn("level undefined for");
console.log(feature);
} else {
function addToLevel(level) {
layers[level].addLayer(marker);
}
if (L.Util.isArray(level)) {
level.forEach(addToLevel);
} else {
addToLevel(level);
}
}
}
}
};
this.addData(data);
},
addTo: function (map) {
map.addLayer(this);
return this;
},
onAdd: function (map) {
this._map = map;
if (this._level === null) {
var levels = this.getLevels();
if (levels.length !== 0) {
this._level = levels[0];
}
}
if (this._level !== null) {
if (this._level in this._layers) {
this._map.addLayer(this._layers[this._level]);
} else {
// TODO: Display warning?
}
}
},
onRemove: function (map) {
if (this._level in this._layers) {
this._map.removeLayer(this._layers[this._level]);
}
this._map = null;
},
addData: function(data) {
var layers = this._layers,
options = this.options,
features = L.Util.isArray(data) ? data : data.features;
features.forEach(function (part) {
var level = options.getLevel(part);
var layer;
if (typeof level === 'undefined' ||
level === null) {
// TODO: Display warning
return;
}
if (!("geometry" in part)) {
// TODO: Not sure if this is still needed/display warning
return;
}
// if the feature is on mutiple levels
if (L.Util.isArray(level)) {
level.forEach(function(level) {
if (level in layers) {
layer = layers[level];
} else {
layer = layers[level] = L.geoJson({
type: "FeatureCollection",
features: []
}, options);
}
layer.addData(part);
});
} else { // feature is on a single level
if (level in layers) {
layer = layers[level];
} else {
layer = layers[level] = L.geoJson({
type: "FeatureCollection",
features: []
}, options);
}
layer.addData(part);
}
});
},
getLevels: function() {
return Object.keys(this._layers);
},
getLevel: function() {
return this._level;
},
setLevel: function(level) {
if (typeof(level) === 'object') {
level = level.newLevel;
}
if (this._level === level)
return;
var oldLayer = this._layers[this._level];
var layer = this._layers[level];
if (this._map !== null) {
if (this._map.hasLayer(oldLayer)) {
this._map.removeLayer(oldLayer);
}
if (layer) {
this._map.addLayer(layer);
}
}
this._level = level;
},
resetStyle: function (layer) {
// reset any custom styles
layer.options = layer.defaultOptions;
this._setLayerStyle(layer, this.options.style);
return this;
},
_setLayerStyle: function (layer, style) {
if (typeof style === 'function') {
style = style(layer.feature);
}
if (layer.setStyle) {
layer.setStyle(style);
}
}
});
L.indoor = function(data, options) {
return new L.Indoor(data, options);
};
L.Control.Level = L.Control.extend({
includes: L.Mixin.Events,
options: {
position: 'bottomright',
// used to get a unique integer for each level to be used to order them
parseLevel: function(level) {
return parseInt(level, 10);
}
},
initialize: function(options) {
L.setOptions(this, options);
this._map = null;
this._buttons = {};
this._listeners = [];
this._level = options.level;
this.addEventListener("levelchange", this._levelChange, this);
},
onAdd: function(map) {
var div = L.DomUtil.create('div', 'leaflet-bar leaflet-control');
div.style.font = "18px 'Lucida Console',Monaco,monospace";
var buttons = this._buttons;
var activeLevel = this._level;
var self = this;
var levels = [];
for (var i=0; i<this.options.levels.length; i++) {
var level = this.options.levels[i];
var levelNum = self.options.parseLevel(level);
levels.push({
num: levelNum,
label: level
});
}
levels.sort(function(a, b) {
return a.num - b.num;
});
for (i=levels.length-1; i>=0; i--) {
var level = levels[i].num;
var originalLevel = levels[i].label;
var levelBtn = L.DomUtil.create('a', 'leaflet-button-part', div);
if (level === activeLevel || originalLevel === activeLevel) {
levelBtn.style.backgroundColor = "#b0b0b0";
}
levelBtn.appendChild(levelBtn.ownerDocument.createTextNode(originalLevel));
(function(level) {
levelBtn.onclick = function() {
self.setLevel(level);
};
})(level);
buttons[level] = levelBtn;
}
return div;
},
_levelChange: function(e) {
if (this._map !== null) {
if (typeof e.oldLevel !== "undefined")
this._buttons[e.oldLevel].style.backgroundColor = "#FFFFFF";
this._buttons[e.newLevel].style.backgroundColor = "#b0b0b0";
}
},
setLevel: function(level) {
if (level === this._level)
return;
var oldLevel = this._level;
this._level = level;
this.fireEvent("levelchange", {
oldLevel: oldLevel,
newLevel: level
});
},
getLevel: function() {
return this._level;
}
});
L.Control.level = function (options) {
return new L.Control.Level(options);
};
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