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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,283 @@ | ||
| define(['underscore', 'knockout', 'mapbox-gl-draw'], function(_, ko, MapboxDraw) { | ||
| /** | ||
| * A viewmodel used for managing a spatial search filter. | ||
| * | ||
| * @constructor | ||
| * @name MapFilterViewModel | ||
| * | ||
| */ | ||
| var MapFilterViewModel = function(params) { | ||
| var self = this; | ||
| this.searchContext = params.searchContext || ko.observable(true); | ||
| this.map = params.map; | ||
| this.draw = params.draw; | ||
| this.buffer = ko.observable(0); | ||
| this.bufferUnit = ko.observable('m'); | ||
| this.filter = params.filter || {}; | ||
| this.filter.inverted = ko.observable(false); | ||
| this.bufferUnits = [{ | ||
| name: 'meters', | ||
| val: 'm' | ||
| },{ | ||
| name: 'feet', | ||
| val: 'ft' | ||
| }]; | ||
|
|
||
| this.searchContext.subscribe(function(val) { | ||
| if (val === false) { | ||
| self.clear(); | ||
| } | ||
| }); | ||
|
|
||
| this.filter.feature_collection = ko.observable({ | ||
| "type": "FeatureCollection", | ||
| "features": [] | ||
| }); | ||
|
|
||
| this.searchGeometries = ko.observableArray(null); | ||
| this.sources = { | ||
| "geojson-search-buffer-data": { | ||
| "type": "geojson", | ||
| "generateId": true, | ||
| "data": { | ||
| "type": "FeatureCollection", | ||
| "features": [] | ||
| } | ||
| } | ||
| }; | ||
|
|
||
| this.layers = ko.observable( | ||
| [ | ||
| { | ||
| "id": "geojson-search-buffer-outline-base", | ||
| "source": "geojson-search-buffer-data", | ||
| "type": "line", | ||
| "filter": [ | ||
| "==", "$type", "Polygon" | ||
| ], | ||
| "layout": { | ||
| "line-cap": "round", | ||
| "line-join": "round" | ||
| }, | ||
| "paint": { | ||
| "line-color": "#aa0000", | ||
| "line-width": 4 | ||
| } | ||
| }, | ||
| { | ||
| "id": "geojson-search-buffer-outline", | ||
| "source": "geojson-search-buffer-data", | ||
| "type": "line", | ||
| "filter": [ | ||
| "==", "$type", "Polygon" | ||
| ], | ||
| "layout": { | ||
| "line-cap": "round", | ||
| "line-join": "round" | ||
| }, | ||
| "paint": { | ||
| "line-color": "#aa0000", | ||
| "line-width": 2 | ||
| } | ||
| }, | ||
| { | ||
| "id": "geojson-search-buffer-line", | ||
| "source": "geojson-search-buffer-data", | ||
| "type": "line", | ||
| "filter": [ | ||
| "==", "$type", "LineString" | ||
| ], | ||
| "layout": { | ||
| "line-cap": "round", | ||
| "line-join": "round" | ||
| }, | ||
| "paint": { | ||
| "line-color": "#aa0000", | ||
| "line-width": 2 | ||
| } | ||
| }, | ||
| { | ||
| "id": "geojson-search-buffer", | ||
| "type": "fill", | ||
| "filter": [ | ||
| "==", ["geometry-type"], "Polygon" | ||
| ], | ||
| "layout": { | ||
| "visibility": "visible" | ||
| }, | ||
| "paint": { | ||
| "fill-color": "#aa3322", | ||
| "fill-outline-color": "#aa0000", | ||
| "fill-opacity": 0.2 | ||
| }, | ||
| "source": "geojson-search-buffer-data" | ||
| }, | ||
| { | ||
| "id": "geojson-search-buffer-point-stroke", | ||
| "type": "circle", | ||
| "filter": ["==", "$type", "Point"], | ||
| "paint": { | ||
| "circle-radius": 6, | ||
| "circle-opacity": 1, | ||
| "circle-color": "#fff" | ||
| }, | ||
| "source": "geojson-search-buffer-data", | ||
| }, | ||
| { | ||
| "id": "geojson-search-buffer-point", | ||
| "type": "circle", | ||
| "filter": ["==", "$type", "Point"], | ||
| "paint": { | ||
| "circle-radius": 5, | ||
| "circle-color": "#aa0000" | ||
| }, | ||
| "source": "geojson-search-buffer-data", | ||
| }, | ||
| ] | ||
| ); | ||
|
|
||
| this.clear = function() { | ||
| this.map().getSource('geojson-search-buffer-data').setData({ | ||
| "type": "FeatureCollection", | ||
| "features": [] | ||
| }); | ||
| this.draw.getAll().features.forEach(function(feature){ | ||
| if (feature.properties.searchGeom) { | ||
| self.draw.delete(feature.id); | ||
| } | ||
| }); | ||
| this.searchGeometries([]); | ||
| }; | ||
|
|
||
| this.spatialFilterTypes = [{ | ||
| name: 'Point', | ||
| title: 'Draw a Marker', | ||
| class: 'leaflet-draw-draw-marker', | ||
| icon: 'ion-location', | ||
| drawMode: 'draw_point', | ||
| active: ko.observable(false) | ||
| }, { | ||
| name: 'Line', | ||
| title: 'Draw a Polyline', | ||
| icon: 'ion-steam', | ||
| class: 'leaflet-draw-draw-polyline', | ||
| drawMode: 'draw_line_string', | ||
| active: ko.observable(false) | ||
| }, { | ||
| name: 'Polygon', | ||
| title: 'Draw a Polygon', | ||
| icon: 'fa fa-pencil-square-o', | ||
| class: 'leaflet-draw-draw-polygon', | ||
| drawMode: 'draw_polygon', | ||
| active: ko.observable(false) | ||
| }]; | ||
|
|
||
| this.drawMode = ko.observable(); | ||
| this.drawModes = _.pluck(this.spatialFilterTypes, 'drawMode'); | ||
| this.drawMode.subscribe(function(selectedDrawTool){ | ||
| if(!!selectedDrawTool){ | ||
| if(selectedDrawTool === 'extent'){ | ||
| this.searchByExtent(); | ||
| } else { | ||
| this.draw.changeMode(selectedDrawTool); | ||
| } | ||
| } | ||
| }, this); | ||
|
|
||
| this.useMaxBuffer = function (unit, buffer, maxBuffer) { | ||
| var res = false; | ||
| if (unit === 'ft') { | ||
| res = (buffer * 0.3048) > maxBuffer; | ||
| } else { | ||
| res = buffer > maxBuffer; | ||
| } | ||
| return res; | ||
| }; | ||
|
|
||
| this.setupDraw = function() { | ||
| var self = this; | ||
| if (!this.draw) { | ||
| var modes = MapboxDraw.modes; | ||
| modes.static = { | ||
| toDisplayFeatures: function(state, geojson, display) { | ||
| display(geojson); | ||
| } | ||
| }; | ||
| this.draw = new MapboxDraw({ | ||
| displayControlsDefault: false, | ||
| modes: modes | ||
| }); | ||
| this.map().addControl(this.draw); | ||
| } | ||
| this.map().on('draw.create', function(e) { | ||
| if (self.searchContext()) { | ||
| self.draw.getAll().features.forEach(function(feature){ | ||
| if(feature.id !== e.features[0].id) { | ||
| if (feature.properties.searchGeom) { | ||
| self.draw.delete(feature.id); | ||
| } | ||
| } else { | ||
| self.draw.setFeatureProperty(feature.id, 'nodeId', null) | ||
| self.draw.setFeatureProperty(feature.id, 'searchGeom', true); | ||
| } | ||
| }); | ||
| self.searchGeometries(e.features); | ||
| self.updateFilter(); | ||
| self.drawMode(undefined); | ||
| } | ||
| }); | ||
| this.map().on('draw.update', function(e) { | ||
| if (self.searchContext()) { | ||
| self.searchGeometries(e.features); | ||
| self.updateFilter(); | ||
| } | ||
| }); | ||
| }; | ||
|
|
||
| this.makeSearchFeature = function(feature) { | ||
| if (self.searchContext()) { | ||
| self.searchGeometries([feature]); | ||
| self.updateFilter(); | ||
| } | ||
| }; | ||
|
|
||
| this.updateFilter = function(){ | ||
| if (this.buffer() < 0) { | ||
| this.buffer(0); | ||
| } | ||
|
|
||
| var useMaxBuffer = this.useMaxBuffer(this.bufferUnit(), this.buffer(), this.maxBuffer); | ||
| if (useMaxBuffer) { | ||
| var max = this.bufferUnit() === 'ft' ? 328084 : this.maxBuffer; | ||
| this.buffer(max); | ||
| } | ||
|
|
||
| this.searchGeometries().forEach(function(feature){ | ||
| if(!feature.properties){ | ||
| feature.properties = {}; | ||
| } | ||
| feature.properties.buffer = { | ||
| "width": this.buffer(), | ||
| "unit": this.bufferUnit() | ||
| }; | ||
| feature.properties.inverted = this.filter.inverted(); | ||
| }, this); | ||
|
|
||
| this.filter.feature_collection({ | ||
| "type": "FeatureCollection", | ||
| "features": this.searchGeometries() | ||
| }); | ||
| } | ||
|
|
||
| this.buffer.subscribe(function() { | ||
| this.updateFilter(); | ||
| }, this); | ||
|
|
||
| this.bufferUnit.subscribe(function() { | ||
| this.updateFilter(); | ||
| }, this); | ||
| //----------------- End search buffer values from map-filter | ||
|
|
||
| }; | ||
| return MapFilterViewModel; | ||
| }); |
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