/* License and acknowledgements will go here... */ var dataLayers = {}; /* --------------------------------- */ /* Object definition for data layers */ /* --------------------------------- */ var DataLayer = function(config) { this.id = ''; // The ID for this layer this.olLayer = null; // The OpenLayers Layer Object this.visibleByDefault = false; // Whether this layer should be visible and added to the map when the page loads. this.activeOnMap = false; // Indicates when the layer is currently active on the map. this.searching = false; // Indicates when the layers is currently activated for searching. this.tablename = ''; // The table name for this layer's data. this.geometry_col_name = ''; // The name for the geometry column. this.searchableCols = []; // A list of column names that should searched by a text search. e.g. [ 'name', 'altname', ...] this.featureOverrideParams = {}; // A params key/value list of values that should be override from the original WMS request when performing a feature search. // This is a helper function to applying feature param overrides. It's split out from 'getFeatureParams' so that getFeatureParams can be overriden more easily. this.writeOverrideParams = function(params) { for(override in this.featureOverrideParams) { params[override] = this.featureOverrideParams[override]; } return params; }; // Establish OpenLayers Layer if a definition object was passed in. if(config.olLayerDef) { // Some default parameters var params = { styles:'', format:'image/png', tiled:'true', transparent:true, tilesOrigin:'-31.24594448,-51.77055555499996' }; // Some default options var options = { buffer:0 }; // Apply custom parameters if(config.olLayerDef.params) { for(prm in config.olLayerDef.params) { params[prm] = config.olLayerDef.params[prm]; } } // Apply custom options if(config.olLayerDef.options) { for(opt in config.olLayerDef.options) { options[opt] = config.olLayerDef.options[opt]; } } this.olLayer = new OpenLayers.Layer.WMS(config.olLayerDef.name, config.olLayerDef.url, params, options); this.olLayer.displayInLayerSwitcher = false; } // A function run by the search process that passes in default param values and allows the data layer object to inject custom params that are specific to this layer. this.getFeatureParams = function(params) { return this.writeOverrideParams(params); }; // Takes a searchTerm and and turns it into a CQL query string based on the instance searchableCols this.makeFilterString = function(searchTerm) { var terms = searchTerm.split(' '); var filterString = ''; for(var i = 0; i < terms.length; i++) { // don't include blank values if they got in there somehow if(terms[i] == '') { continue; } if(i > 0) { filterString += ' AND ' } filterString += '('; for(var j = 0; j < this.searchableCols.length; j++) { if(j > 0) { filterString += ' OR ' } var column = this.searchableCols[j]; var term = terms[i]; filterString += "("; filterString += column + " LIKE '% " + term + " %'"; filterString += " OR " + column + " LIKE '" + term + " %'"; filterString += " OR " + column + " = '"+ term + "'"; filterString += " OR " + column + " LIKE '% "+term + "' )"; } filterString += ')'; } return filterString; }; this.makeMapServerFilterString = function(searchTerm) { var terms = searchTerm.split(' '); var filterString = ''; for(var i = 0; i < terms.length; i++) { // don't include blank values if they got in there somehow if(terms[i] == '') { continue; } if(i > 0) { filterString += ' AND ' } filterString += '('; for(var j = 0; j < this.searchableCols.length; j++) { if(j > 0) { filterString += ' OR ' } var column = this.searchableCols[j]; var term = terms[i]; filterString += column + " ~* '" + term + "'"; } filterString += ')'; } return filterString; } // Takes the CQL filter string and the name of the WMS param to use with it and adds it to the wms layer this.applySearch = function(filterParamName, filterString) { var wmsParams = this.olLayer.params; wmsParams[filterParamName] = filterString; this.olLayer.mergeNewParams(wmsParams); if(this.activeOnMap == false) { // This stuff shouldn't be here. there should not be any AfricaMap.js dependencies in dataLayers.js AM.OL.map.addLayer(this.olLayer); this.activeOnMap = true; AM.OL.map.setLayerIndex(this.olLayer, (AM.OL.map.layers.length-1)); } }; // A function that is run when a search is performed. This function will often be overriden. this.runSearch = function(searchTerm) { this.applySearch('CQL_FILTER', this.makeFilterString(searchTerm)); }; this.reset = function() { var wmsParams = this.olLayer.params; // remove any 'filter params' for(var p in wmsParams) { if(p.match(/FILTER/i)) { delete wmsParams[p]; } } this.olLayer.mergeNewParams(wmsParams); }; // Overrides object properties and applies new ones based on the 'params' object passed in. for(p in config) { this[p] = config[p]; } }; dataLayers.GeonamesFeatures6 = new DataLayer({ id:'geonames', searching: false, tablename: 'geonames', geometry_col_name: 'geoname_geom', searchableCols: [ 'name','asciiname','alternatenames','keywords', 'fcode_name' ], // FEATURE_COUNT: undefined causes MapServer to return only a single feature from a GetFeatureInfo request featureOverrideParams: { map:'geonames.map', FEATURE_COUNT: undefined }, olLayerDef: { name:'Geonames Search Results', url:'http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=geonames.map', params: { layers:'geonomy_features', map_layer_0_class_color:'255 0 0' } }, selectedFCodes: [], reset: function() { this.selectedFCodes = []; var wmsParams = this.olLayer.params; delete wmsParams.CQL_FILTER; delete wmsParams.MAP_LAYER_0_FILTER; this.olLayer.mergeNewParams(wmsParams); }, runSearch:function(searchTerm) { var filterString = this.makeMapServerFilterString(searchTerm); // Add custom search for fcodes that come from the Places tab if(this.selectedFCodes.length > 0) { if(filterString != '') { filterString += ' AND '; } filterString += '('; for(var f = 0; f < this.selectedFCodes.length; f++) { if(f > 0) { filterString += ' OR '; } filterString += "fcode = '" + this.selectedFCodes[f] + "'"; } filterString += ')'; } this.applySearch('MAP_LAYER_0_FILTER', filterString); } }); dataLayers.Projects3 = new DataLayer({ id:'projects', tablename: 'project', geometry_col_name: 'the_geom', searchableCols: ['keywords','proj_na','pri_disc','sec_disc','descr','contact_n','contact_or'], featureOverrideParams: { map:'project_test_wms.map', STYLES:'', LAYERS: "africamap_projects", QUERY_LAYERS: "africamap_projects" }, olLayerDef: { name: 'Projects Search Results', url: 'http://cga-5.hmdc.harvard.edu:8080/geoserver/wms', params: { layers:'topp:project', srs:'epsg:4326', styles:'projects_style_highlight' } }, // this section must be included in a GeoServer layer as-is getFeatureParams: function(params) { params = this.writeOverrideParams(params); if(params.CQL_FILTER && params.CQL_FILTER != '') { params.MAP_LAYER_0_FILTER = params.CQL_FILTER; delete params.CQL_FILTER; } return params; } }); dataLayers.murdock = new DataLayer({ id:'murdock', tablename: 'murdock', geometry_col_name: 'the_geom', searchableCols: ['keywords', 'name', 'code'], olLayerDef: { name: "Murdock Layer", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/murdock/mur.map", params: { layers: 'murdock_s', map_layer_2_class_color: '255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/murdock/mur.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_2_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.gadm = new DataLayer({ id:'gadm', tablename: 'gadm_admin', geometry_col_name: 'the_geom', searchableCols: ['keywords', 'name_1', 'varname_1', 'name_2', 'varname_2', 'name_3', 'fips_1', 'hasc_1'], olLayerDef: { name: "Administrative Boundaries", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'gadm_s' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.pop = new DataLayer({ id:'pop', tablename: 'pop_centroids', geometry_col_name: 'the_geom', searchableCols: ['keywords', 'name1', 'name2', 'name3', 'name4', 'adminid'], olLayerDef: { name: "Population Centroids", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'pop_s' , map_layer_1_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_1_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.hmc = new DataLayer({ id:'hmc', tablename: 'hmc_index', geometry_col_name: 'the_geom', searchableCols: ['cntr_map', 'mp_mk_cn', 'language', 'scale', 'start_dt', 'end_dt', 'complete', 'call_num', 'scan_nam'], olLayerDef: { name: "Map Series Boundaries", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'hmc' , map_layer_2_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_2_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.polities = new DataLayer({ id:'polities', tablename: 'polities', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'start_date', 'end_date', 'bin', 'bin_descr', 'date_range', 'period', 'name_alt', 'type_1', 'keywords'], olLayerDef: { name: "polities", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'polities' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1 = new DataLayer({ id:'mcevedy_1', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1400CE = new DataLayer({ id:'mcevedy_1400CE', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1400CE", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1400CE' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1CE = new DataLayer({ id:'mcevedy_1CE', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1CE", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1CE' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1000CE = new DataLayer({ id:'mcevedy_1000CE', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1000CE", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1000CE' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1800CE = new DataLayer({ id:'mcevedy_1800CE', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1800CE", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1800CE' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } }); dataLayers.mcevedy_1900CE = new DataLayer({ id:'mcevedy_1900CE', tablename: 'mcevedy', geometry_col_name: 'the_geom', searchableCols: ['name', 'source', 'bin_descr', 'date_range', 'layer', 'demo_layer', 'keywords'], olLayerDef: { name: "mcevedy_1900CE", url: "http://cga-5.hmdc.harvard.edu/cgi-bin/mapserv?map=/opt/CGA/data/vec/vec.map", params: { layers: 'mcevedy_1900CE' , map_layer_0_class_color:'255 255 0' } }, featureOverrideParams: { map:'/opt/CGA/data/vec/vec.map' }, runSearch : function(searchTerm) { this.applySearch('MAP_LAYER_0_FILTER', this.makeMapServerFilterString(searchTerm)); } });