465 lines
18 KiB
JavaScript
465 lines
18 KiB
JavaScript
/* Copyright (c) 2006-2012 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the Clear BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/GML/Base.js
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*/
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/**
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* Class: OpenLayers.Format.GML.v3
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* Parses GML version 3.
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*
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* Inherits from:
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* - <OpenLayers.Format.GML.Base>
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*/
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OpenLayers.Format.GML.v3 = OpenLayers.Class(OpenLayers.Format.GML.Base, {
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/**
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* Property: schemaLocation
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* {String} Schema location for a particular minor version. The writers
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* conform with the Simple Features Profile for GML.
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*/
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schemaLocation: "http://www.opengis.net/gml http://schemas.opengis.net/gml/3.1.1/profiles/gmlsfProfile/1.0.0/gmlsf.xsd",
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/**
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* Property: curve
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* {Boolean} Write gml:Curve instead of gml:LineString elements. This also
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* affects the elements in multi-part geometries. Default is false.
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* To write gml:Curve elements instead of gml:LineString, set curve
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* to true in the options to the contstructor (cannot be changed after
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* instantiation).
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*/
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curve: false,
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/**
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* Property: multiCurve
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* {Boolean} Write gml:MultiCurve instead of gml:MultiLineString. Since
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* the latter is deprecated in GML 3, the default is true. To write
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* gml:MultiLineString instead of gml:MultiCurve, set multiCurve to
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* false in the options to the constructor (cannot be changed after
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* instantiation).
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*/
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multiCurve: true,
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/**
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* Property: surface
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* {Boolean} Write gml:Surface instead of gml:Polygon elements. This also
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* affects the elements in multi-part geometries. Default is false.
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* To write gml:Surface elements instead of gml:Polygon, set surface
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* to true in the options to the contstructor (cannot be changed after
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* instantiation).
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*/
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surface: false,
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/**
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* Property: multiSurface
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* {Boolean} Write gml:multiSurface instead of gml:MultiPolygon. Since
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* the latter is deprecated in GML 3, the default is true. To write
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* gml:MultiPolygon instead of gml:multiSurface, set multiSurface to
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* false in the options to the constructor (cannot be changed after
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* instantiation).
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*/
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multiSurface: true,
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/**
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* Constructor: OpenLayers.Format.GML.v3
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* Create a parser for GML v3.
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*
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* Parameters:
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* options - {Object} An optional object whose properties will be set on
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* this instance.
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*
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* Valid options properties:
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* featureType - {String} Local (without prefix) feature typeName (required).
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* featureNS - {String} Feature namespace (required).
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* geometryName - {String} Geometry element name.
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*/
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initialize: function(options) {
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OpenLayers.Format.GML.Base.prototype.initialize.apply(this, [options]);
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},
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/**
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* Property: readers
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* Contains public functions, grouped by namespace prefix, that will
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* be applied when a namespaced node is found matching the function
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* name. The function will be applied in the scope of this parser
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* with two arguments: the node being read and a context object passed
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* from the parent.
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*/
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readers: {
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"gml": OpenLayers.Util.applyDefaults({
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"featureMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"Curve": function(node, container) {
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var obj = {points: []};
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this.readChildNodes(node, obj);
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if(!container.components) {
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container.components = [];
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}
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container.components.push(
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new OpenLayers.Geometry.LineString(obj.points)
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);
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},
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"segments": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"LineStringSegment": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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if(obj.points) {
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Array.prototype.push.apply(container.points, obj.points);
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}
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},
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"pos": function(node, obj) {
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var str = this.getChildValue(node).replace(
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this.regExes.trimSpace, ""
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);
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var coords = str.split(this.regExes.splitSpace);
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var point;
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if(this.xy) {
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point = new OpenLayers.Geometry.Point(
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coords[0], coords[1], coords[2]
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);
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} else {
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point = new OpenLayers.Geometry.Point(
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coords[1], coords[0], coords[2]
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);
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}
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obj.points = [point];
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},
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"posList": function(node, obj) {
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var str = this.getChildValue(node).replace(
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this.regExes.trimSpace, ""
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);
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var coords = str.split(this.regExes.splitSpace);
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var dim = parseInt(node.getAttribute("dimension")) || 2;
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var j, x, y, z;
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var numPoints = coords.length / dim;
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var points = new Array(numPoints);
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for(var i=0, len=coords.length; i<len; i += dim) {
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x = coords[i];
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y = coords[i+1];
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z = (dim == 2) ? undefined : coords[i+2];
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if (this.xy) {
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points[i/dim] = new OpenLayers.Geometry.Point(x, y, z);
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} else {
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points[i/dim] = new OpenLayers.Geometry.Point(y, x, z);
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}
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}
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obj.points = points;
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},
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"Surface": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"patches": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"PolygonPatch": function(node, obj) {
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this.readers.gml.Polygon.apply(this, [node, obj]);
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},
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"exterior": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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container.outer = obj.components[0];
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},
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"interior": function(node, container) {
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var obj = {};
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this.readChildNodes(node, obj);
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container.inner.push(obj.components[0]);
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},
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"MultiCurve": function(node, container) {
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var obj = {components: []};
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this.readChildNodes(node, obj);
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if(obj.components.length > 0) {
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container.components = [
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new OpenLayers.Geometry.MultiLineString(obj.components)
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];
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}
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},
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"curveMember": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"MultiSurface": function(node, container) {
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var obj = {components: []};
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this.readChildNodes(node, obj);
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if(obj.components.length > 0) {
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container.components = [
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new OpenLayers.Geometry.MultiPolygon(obj.components)
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];
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}
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},
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"surfaceMember": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"surfaceMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"pointMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"lineStringMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"polygonMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"geometryMembers": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"Envelope": function(node, container) {
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var obj = {points: new Array(2)};
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this.readChildNodes(node, obj);
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if(!container.components) {
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container.components = [];
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}
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var min = obj.points[0];
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var max = obj.points[1];
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container.components.push(
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new OpenLayers.Bounds(min.x, min.y, max.x, max.y)
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);
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},
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"lowerCorner": function(node, container) {
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var obj = {};
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this.readers.gml.pos.apply(this, [node, obj]);
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container.points[0] = obj.points[0];
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},
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"upperCorner": function(node, container) {
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var obj = {};
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this.readers.gml.pos.apply(this, [node, obj]);
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container.points[1] = obj.points[0];
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}
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}, OpenLayers.Format.GML.Base.prototype.readers["gml"]),
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"feature": OpenLayers.Format.GML.Base.prototype.readers["feature"],
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"wfs": OpenLayers.Format.GML.Base.prototype.readers["wfs"]
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},
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/**
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* Method: write
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*
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* Parameters:
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* features - {Array(<OpenLayers.Feature.Vector>) | OpenLayers.Feature.Vector}
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* An array of features or a single feature.
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*
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* Returns:
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* {String} Given an array of features, a doc with a gml:featureMembers
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* element will be returned. Given a single feature, a doc with a
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* gml:featureMember element will be returned.
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*/
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write: function(features) {
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var name;
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if(OpenLayers.Util.isArray(features)) {
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name = "featureMembers";
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} else {
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name = "featureMember";
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}
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var root = this.writeNode("gml:" + name, features);
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this.setAttributeNS(
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root, this.namespaces["xsi"],
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"xsi:schemaLocation", this.schemaLocation
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);
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return OpenLayers.Format.XML.prototype.write.apply(this, [root]);
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},
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/**
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* Property: writers
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* As a compliment to the readers property, this structure contains public
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* writing functions grouped by namespace alias and named like the
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* node names they produce.
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*/
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writers: {
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"gml": OpenLayers.Util.applyDefaults({
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"featureMembers": function(features) {
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var node = this.createElementNSPlus("gml:featureMembers");
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for(var i=0, len=features.length; i<len; ++i) {
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this.writeNode("feature:_typeName", features[i], node);
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}
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return node;
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},
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"Point": function(geometry) {
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var node = this.createElementNSPlus("gml:Point");
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this.writeNode("pos", geometry, node);
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return node;
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},
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"pos": function(point) {
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// only 2d for simple features profile
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var pos = (this.xy) ?
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(point.x + " " + point.y) : (point.y + " " + point.x);
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return this.createElementNSPlus("gml:pos", {
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value: pos
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});
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},
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"LineString": function(geometry) {
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var node = this.createElementNSPlus("gml:LineString");
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this.writeNode("posList", geometry.components, node);
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return node;
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},
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"Curve": function(geometry) {
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var node = this.createElementNSPlus("gml:Curve");
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this.writeNode("segments", geometry, node);
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return node;
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},
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"segments": function(geometry) {
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var node = this.createElementNSPlus("gml:segments");
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this.writeNode("LineStringSegment", geometry, node);
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return node;
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},
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"LineStringSegment": function(geometry) {
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var node = this.createElementNSPlus("gml:LineStringSegment");
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this.writeNode("posList", geometry.components, node);
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return node;
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},
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"posList": function(points) {
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// only 2d for simple features profile
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var len = points.length;
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var parts = new Array(len);
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var point;
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for(var i=0; i<len; ++i) {
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point = points[i];
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if(this.xy) {
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parts[i] = point.x + " " + point.y;
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} else {
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parts[i] = point.y + " " + point.x;
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}
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}
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return this.createElementNSPlus("gml:posList", {
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value: parts.join(" ")
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});
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},
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"Surface": function(geometry) {
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var node = this.createElementNSPlus("gml:Surface");
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this.writeNode("patches", geometry, node);
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return node;
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},
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"patches": function(geometry) {
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var node = this.createElementNSPlus("gml:patches");
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this.writeNode("PolygonPatch", geometry, node);
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return node;
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},
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"PolygonPatch": function(geometry) {
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var node = this.createElementNSPlus("gml:PolygonPatch", {
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attributes: {interpolation: "planar"}
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});
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this.writeNode("exterior", geometry.components[0], node);
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for(var i=1, len=geometry.components.length; i<len; ++i) {
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this.writeNode(
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"interior", geometry.components[i], node
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);
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}
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return node;
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},
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"Polygon": function(geometry) {
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var node = this.createElementNSPlus("gml:Polygon");
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this.writeNode("exterior", geometry.components[0], node);
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for(var i=1, len=geometry.components.length; i<len; ++i) {
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this.writeNode(
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"interior", geometry.components[i], node
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);
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}
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return node;
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},
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"exterior": function(ring) {
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var node = this.createElementNSPlus("gml:exterior");
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this.writeNode("LinearRing", ring, node);
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return node;
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},
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"interior": function(ring) {
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var node = this.createElementNSPlus("gml:interior");
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this.writeNode("LinearRing", ring, node);
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return node;
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},
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"LinearRing": function(ring) {
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var node = this.createElementNSPlus("gml:LinearRing");
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this.writeNode("posList", ring.components, node);
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return node;
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},
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"MultiCurve": function(geometry) {
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var node = this.createElementNSPlus("gml:MultiCurve");
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var components = geometry.components || [geometry];
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for(var i=0, len=components.length; i<len; ++i) {
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this.writeNode("curveMember", components[i], node);
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}
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return node;
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},
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"curveMember": function(geometry) {
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var node = this.createElementNSPlus("gml:curveMember");
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if(this.curve) {
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this.writeNode("Curve", geometry, node);
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} else {
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this.writeNode("LineString", geometry, node);
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}
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return node;
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},
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"MultiSurface": function(geometry) {
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var node = this.createElementNSPlus("gml:MultiSurface");
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var components = geometry.components || [geometry];
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for(var i=0, len=components.length; i<len; ++i) {
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this.writeNode("surfaceMember", components[i], node);
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}
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return node;
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},
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"surfaceMember": function(polygon) {
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var node = this.createElementNSPlus("gml:surfaceMember");
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if(this.surface) {
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this.writeNode("Surface", polygon, node);
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} else {
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this.writeNode("Polygon", polygon, node);
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}
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return node;
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},
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"Envelope": function(bounds) {
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var node = this.createElementNSPlus("gml:Envelope");
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this.writeNode("lowerCorner", bounds, node);
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this.writeNode("upperCorner", bounds, node);
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// srsName attribute is required for gml:Envelope
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if(this.srsName) {
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node.setAttribute("srsName", this.srsName);
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}
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return node;
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},
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"lowerCorner": function(bounds) {
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// only 2d for simple features profile
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var pos = (this.xy) ?
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(bounds.left + " " + bounds.bottom) :
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(bounds.bottom + " " + bounds.left);
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return this.createElementNSPlus("gml:lowerCorner", {
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value: pos
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});
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},
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"upperCorner": function(bounds) {
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// only 2d for simple features profile
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var pos = (this.xy) ?
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(bounds.right + " " + bounds.top) :
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(bounds.top + " " + bounds.right);
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return this.createElementNSPlus("gml:upperCorner", {
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value: pos
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});
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}
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}, OpenLayers.Format.GML.Base.prototype.writers["gml"]),
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"feature": OpenLayers.Format.GML.Base.prototype.writers["feature"],
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"wfs": OpenLayers.Format.GML.Base.prototype.writers["wfs"]
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},
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/**
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* Method: setGeometryTypes
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* Sets the <geometryTypes> mapping.
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*/
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setGeometryTypes: function() {
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this.geometryTypes = {
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"OpenLayers.Geometry.Point": "Point",
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"OpenLayers.Geometry.MultiPoint": "MultiPoint",
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"OpenLayers.Geometry.LineString": (this.curve === true) ? "Curve": "LineString",
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"OpenLayers.Geometry.MultiLineString": (this.multiCurve === false) ? "MultiLineString" : "MultiCurve",
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"OpenLayers.Geometry.Polygon": (this.surface === true) ? "Surface" : "Polygon",
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"OpenLayers.Geometry.MultiPolygon": (this.multiSurface === false) ? "MultiPolygon" : "MultiSurface",
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"OpenLayers.Geometry.Collection": "GeometryCollection"
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};
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},
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CLASS_NAME: "OpenLayers.Format.GML.v3"
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});
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