diff options
| -rw-r--r-- | static/gis/js/OLMapWidget.js | 376 |
1 files changed, 0 insertions, 376 deletions
diff --git a/static/gis/js/OLMapWidget.js b/static/gis/js/OLMapWidget.js deleted file mode 100644 index c101c65fc..000000000 --- a/static/gis/js/OLMapWidget.js +++ /dev/null @@ -1,376 +0,0 @@ -(function() { -/** - * Transforms an array of features to a single feature with the merged - * geometry of geom_type - */ -OpenLayers.Util.properFeatures = function(features, geom_type) { - if (features.constructor == Array) { - var geoms = []; - for (var i=0; i<features.length; i++) { - geoms.push(features[i].geometry); - } - var geom = new geom_type(geoms); - features = new OpenLayers.Feature.Vector(geom); - } - return features; -} - -/** - * @requires OpenLayers/Format/WKT.js - */ - -/** - * Class: OpenLayers.Format.DjangoWKT - * Class for reading Well-Known Text, with workarounds to successfully parse - * geometries and collections as returned by django.contrib.gis.geos. - * - * Inherits from: - * - <OpenLayers.Format.WKT> - */ - -OpenLayers.Format.DjangoWKT = OpenLayers.Class(OpenLayers.Format.WKT, { - initialize: function(options) { - OpenLayers.Format.WKT.prototype.initialize.apply(this, [options]); - this.regExes.justComma = /\s*,\s*/; - }, - - parse: { - 'point': function(str) { - var coords = OpenLayers.String.trim(str).split(this.regExes.spaces); - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.Point(coords[0], coords[1]) - ); - }, - - 'multipoint': function(str) { - var point; - var points = OpenLayers.String.trim(str).split(this.regExes.justComma); - var components = []; - for(var i=0, len=points.length; i<len; ++i) { - point = points[i].replace(this.regExes.trimParens, '$1'); - components.push(this.parse.point.apply(this, [point]).geometry); - } - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.MultiPoint(components) - ); - }, - - 'linestring': function(str) { - var points = OpenLayers.String.trim(str).split(','); - var components = []; - for(var i=0, len=points.length; i<len; ++i) { - components.push(this.parse.point.apply(this, [points[i]]).geometry); - } - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.LineString(components) - ); - }, - - 'multilinestring': function(str) { - var line; - var lines = OpenLayers.String.trim(str).split(this.regExes.parenComma); - var components = []; - for(var i=0, len=lines.length; i<len; ++i) { - line = lines[i].replace(this.regExes.trimParens, '$1'); - components.push(this.parse.linestring.apply(this, [line]).geometry); - } - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.MultiLineString(components) - ); - }, - - 'polygon': function(str) { - var ring, linestring, linearring; - var rings = OpenLayers.String.trim(str).split(this.regExes.parenComma); - var components = []; - for(var i=0, len=rings.length; i<len; ++i) { - ring = rings[i].replace(this.regExes.trimParens, '$1'); - linestring = this.parse.linestring.apply(this, [ring]).geometry; - linearring = new OpenLayers.Geometry.LinearRing(linestring.components); - components.push(linearring); - } - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.Polygon(components) - ); - }, - - 'multipolygon': function(str) { - var polygon; - var polygons = OpenLayers.String.trim(str).split(this.regExes.doubleParenComma); - var components = []; - for(var i=0, len=polygons.length; i<len; ++i) { - polygon = polygons[i].replace(this.regExes.trimParens, '$1'); - components.push(this.parse.polygon.apply(this, [polygon]).geometry); - } - return new OpenLayers.Feature.Vector( - new OpenLayers.Geometry.MultiPolygon(components) - ); - }, - - 'geometrycollection': function(str) { - // separate components of the collection with | - str = str.replace(/,\s*([A-Za-z])/g, '|$1'); - var wktArray = OpenLayers.String.trim(str).split('|'); - var components = []; - for(var i=0, len=wktArray.length; i<len; ++i) { - components.push(OpenLayers.Format.WKT.prototype.read.apply(this,[wktArray[i]])); - } - return components; - } - }, - - extractGeometry: function(geometry) { - var type = geometry.CLASS_NAME.split('.')[2].toLowerCase(); - if (!this.extract[type]) { - return null; - } - if (this.internalProjection && this.externalProjection) { - geometry = geometry.clone(); - geometry.transform(this.internalProjection, this.externalProjection); - } - var wktType = type == 'collection' ? 'GEOMETRYCOLLECTION' : type.toUpperCase(); - var data = wktType + '(' + this.extract[type].apply(this, [geometry]) + ')'; - return data; - }, - - /** - * Patched write: successfully writes WKT for geometries and - * geometrycollections. - */ - write: function(features) { - var collection, geometry, type, data, isCollection; - isCollection = features.geometry.CLASS_NAME == "OpenLayers.Geometry.Collection"; - var pieces = []; - if (isCollection) { - collection = features.geometry.components; - pieces.push('GEOMETRYCOLLECTION('); - for (var i=0, len=collection.length; i<len; ++i) { - if (i>0) { - pieces.push(','); - } - pieces.push(this.extractGeometry(collection[i])); - } - pieces.push(')'); - } else { - pieces.push(this.extractGeometry(features.geometry)); - } - return pieces.join(''); - }, - - CLASS_NAME: "OpenLayers.Format.DjangoWKT" -}); - -function MapWidget(options) { - this.map = null; - this.controls = null; - this.panel = null; - this.layers = {}; - this.wkt_f = new OpenLayers.Format.DjangoWKT(); - - // Mapping from OGRGeomType name to OpenLayers.Geometry name - if (options['geom_name'] == 'Unknown') options['geom_type'] = OpenLayers.Geometry; - else if (options['geom_name'] == 'GeometryCollection') options['geom_type'] = OpenLayers.Geometry.Collection; - else options['geom_type'] = eval('OpenLayers.Geometry.' + options['geom_name']); - - // Default options - this.options = { - color: 'ee9900', - default_lat: 0, - default_lon: 0, - default_zoom: 4, - is_collection: options.geom_name.indexOf('Multi') > -1 || options.geom_name.indexOf('Collection') > -1, - layerswitcher: false, - map_options: {}, - map_srid: 4326, - modifiable: true, - mouse_position: false, - opacity: 0.4, - point_zoom: 12, - scale_text: false, - scrollable: true - }; - - // Altering using user-provided options - for (var property in options) { - if (options.hasOwnProperty(property)) { - this.options[property] = options[property]; - } - } - - this.map = this.create_map(); - - var defaults_style = { - 'fillColor': '#' + this.options.color, - 'fillOpacity': this.options.opacity, - 'strokeColor': '#' + this.options.color - }; - if (this.options.geom_name == 'LineString') { - defaults_style['strokeWidth'] = 3; - } - var styleMap = new OpenLayers.StyleMap({'default': OpenLayers.Util.applyDefaults(defaults_style, OpenLayers.Feature.Vector.style['default'])}); - this.layers.vector = new OpenLayers.Layer.Vector(" " + this.options.name, {styleMap: styleMap}); - this.map.addLayer(this.layers.vector); - var wkt = document.getElementById(this.options.id).value; - if (wkt) { - var feat = OpenLayers.Util.properFeatures(this.read_wkt(wkt), this.options.geom_type); - this.write_wkt(feat); - if (this.options.is_collection) { - for (var i=0; i<this.num_geom; i++) { - this.layers.vector.addFeatures([new OpenLayers.Feature.Vector(feat.geometry.components[i].clone())]); - } - } else { - this.layers.vector.addFeatures([feat]); - } - this.map.zoomToExtent(feat.geometry.getBounds()); - if (this.options.geom_name == 'Point') { - this.map.zoomTo(this.options.point_zoom); - } - } else { - this.map.setCenter(this.defaultCenter(), this.options.default_zoom); - } - this.layers.vector.events.on({'featuremodified': this.modify_wkt, scope: this}); - this.layers.vector.events.on({'featureadded': this.add_wkt, scope: this}); - - this.getControls(this.layers.vector); - this.panel.addControls(this.controls); - this.map.addControl(this.panel); - this.addSelectControl(); - - if (this.options.mouse_position) { - this.map.addControl(new OpenLayers.Control.MousePosition()); - } - if (this.options.scale_text) { - this.map.addControl(new OpenLayers.Control.Scale()); - } - if (this.options.layerswitcher) { - this.map.addControl(new OpenLayers.Control.LayerSwitcher()); - } - if (!this.options.scrollable) { - this.map.getControlsByClass('OpenLayers.Control.Navigation')[0].disableZoomWheel(); - } - if (wkt) { - if (this.options.modifiable) { - this.enableEditing(); - } - } else { - this.enableDrawing(); - } -} - -MapWidget.prototype.create_map = function() { - var map = new OpenLayers.Map(this.options.map_id, this.options.map_options); - if (this.options.base_layer) this.layers.base = this.options.base_layer; - else this.layers.base = new OpenLayers.Layer.WMS('OpenLayers WMS', 'http://vmap0.tiles.osgeo.org/wms/vmap0', {layers: 'basic'}); - map.addLayer(this.layers.base); - return map -}; - -MapWidget.prototype.get_ewkt = function(feat) { - return "SRID=" + this.options.map_srid + ";" + this.wkt_f.write(feat); -}; - -MapWidget.prototype.read_wkt = function(wkt) { - var prefix = 'SRID=' + this.options.map_srid + ';' - if (wkt.indexOf(prefix) === 0) { - wkt = wkt.slice(prefix.length); - } - return this.wkt_f.read(wkt); -}; - -MapWidget.prototype.write_wkt = function(feat) { - feat = OpenLayers.Util.properFeatures(feat, this.options.geom_type); - if (this.options.is_collection) { - this.num_geom = feat.geometry.components.length; - } else { - this.num_geom = 1; - } - document.getElementById(this.options.id).value = this.get_ewkt(feat); -}; - -MapWidget.prototype.add_wkt = function(event) { - if (this.options.is_collection) { - var feat = new OpenLayers.Feature.Vector(new this.options.geom_type()); - for (var i=0; i<this.layers.vector.features.length; i++) { - feat.geometry.addComponents([this.layers.vector.features[i].geometry]); - } - this.write_wkt(feat); - } else { - if (this.layers.vector.features.length > 1) { - old_feats = [this.layers.vector.features[0]]; - this.layers.vector.removeFeatures(old_feats); - this.layers.vector.destroyFeatures(old_feats); - } - this.write_wkt(event.feature); - } -}; - -MapWidget.prototype.modify_wkt = function(event) { - if (this.options.is_collection) { - if (this.options.geom_name == 'MultiPoint') { - this.add_wkt(event); - return; - } else { - var feat = new OpenLayers.Feature.Vector(new this.options.geom_type()); - for (var i=0; i<this.num_geom; i++) { - feat.geometry.addComponents([this.layers.vector.features[i].geometry]); - } - this.write_wkt(feat); - } - } else { - this.write_wkt(event.feature); - } -}; - -MapWidget.prototype.deleteFeatures = function() { - this.layers.vector.removeFeatures(this.layers.vector.features); - this.layers.vector.destroyFeatures(); -}; - -MapWidget.prototype.clearFeatures = function() { - this.deleteFeatures(); - document.getElementById(this.options.id).value = ''; - this.map.setCenter(this.defaultCenter(), this.options.default_zoom); -}; - -MapWidget.prototype.defaultCenter = function() { - var center = new OpenLayers.LonLat(this.options.default_lon, this.options.default_lat); - if (this.options.map_srid) { - return center.transform(new OpenLayers.Projection("EPSG:4326"), this.map.getProjectionObject()); - } - return center; -}; - -MapWidget.prototype.addSelectControl = function() { - var select = new OpenLayers.Control.SelectFeature(this.layers.vector, {'toggle': true, 'clickout': true}); - this.map.addControl(select); - select.activate(); -}; - -MapWidget.prototype.enableDrawing = function () { - this.map.getControlsByClass('OpenLayers.Control.DrawFeature')[0].activate(); -}; - -MapWidget.prototype.enableEditing = function () { - this.map.getControlsByClass('OpenLayers.Control.ModifyFeature')[0].activate(); -}; - -MapWidget.prototype.getControls = function(layer) { - this.panel = new OpenLayers.Control.Panel({'displayClass': 'olControlEditingToolbar'}); - this.controls = [new OpenLayers.Control.Navigation()]; - if (!this.options.modifiable && layer.features.length) - return; - if (this.options.geom_name.indexOf('LineString') >= 0 || this.options.geom_name == 'GeometryCollection' || this.options.geom_name == 'Unknown') { - this.controls.push(new OpenLayers.Control.DrawFeature(layer, OpenLayers.Handler.Path, {'displayClass': 'olControlDrawFeaturePath'})); - } - if (this.options.geom_name.indexOf('Polygon') >= 0 || this.options.geom_name == 'GeometryCollection' || this.options.geom_name == 'Unknown') { - this.controls.push(new OpenLayers.Control.DrawFeature(layer, OpenLayers.Handler.Polygon, {'displayClass': 'olControlDrawFeaturePolygon'})); - } - if (this.options.geom_name.indexOf('Point') >= 0 || this.options.geom_name == 'GeometryCollection' || this.options.geom_name == 'Unknown') { - this.controls.push(new OpenLayers.Control.DrawFeature(layer, OpenLayers.Handler.Point, {'displayClass': 'olControlDrawFeaturePoint'})); - } - if (this.options.modifiable) { - this.controls.push(new OpenLayers.Control.ModifyFeature(layer, {'displayClass': 'olControlModifyFeature'})); - } -}; -window.MapWidget = MapWidget; -})(); |