Adding a WMTS layer and capabilities parser to work with OGC WMTS service implementations. Thanks August Town for this nice contribution. p=august,me r=me (closes #2637)
git-svn-id: http://svn.openlayers.org/trunk/openlayers@10388 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
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/* Copyright (c) 2006-2009 MetaCarta, Inc., published under the Clear BSD
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* license. 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/WMTSCapabilities.js
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* @requires OpenLayers/Format/OWSCommon/v1_1_0.js
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*/
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/**
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* Class: OpenLayers.Format.WMTSCapabilities.v1_0_0
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* Read WMTS Capabilities version 1.0.0.
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*
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* Inherits from:
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* - <OpenLayers.Format.WMTSCapabilities>
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*/
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OpenLayers.Format.WMTSCapabilities.v1_0_0 = OpenLayers.Class(
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OpenLayers.Format.OWSCommon.v1_1_0, {
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/**
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* Property: version
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* {String} The parser version ("1.0.0").
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*/
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version: "1.0.0",
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/**
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* Property: namespaces
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* {Object} Mapping of namespace aliases to namespace URIs.
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*/
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namespaces: {
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ows: "http://www.opengis.net/ows/1.1",
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wmts: "http://www.opengis.net/wmts/1.0",
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xlink: "http://www.w3.org/1999/xlink"
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},
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/**
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* Property: defaultPrefix
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* {String} The default namespace alias for creating element nodes.
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*/
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defaultPrefix: "wmts",
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/**
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* Constructor: OpenLayers.Format.WMTSCapabilities.v1_0_0
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* Create a new parser for WMTS capabilities version 1.0.0.
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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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initialize: function(options) {
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OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
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this.options = options;
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},
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/**
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* APIMethod: read
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* Read capabilities data from a string, and return info about the WMTS.
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*
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* Parameters:
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* data - {String} or {DOMElement} data to read/parse.
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*
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* Returns:
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* {Object} Information about the SOS service.
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*/
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read: function(data) {
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if(typeof data == "string") {
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data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
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}
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if(data && data.nodeType == 9) {
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data = data.documentElement;
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}
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var capabilities = {};
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this.readNode(data, capabilities);
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capabilities.version = this.version;
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return capabilities;
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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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"wmts": {
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"Capabilities": function(node, obj) {
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this.readChildNodes(node, obj);
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},
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"Contents": function(node, obj) {
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obj.contents = {};
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obj.contents.layers = [];
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obj.contents.tileMatrixSets = {};
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this.readChildNodes(node, obj.contents);
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},
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"Layer": function(node, obj) {
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var layer = {
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styles: [],
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formats: [],
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tileMatrixSetLinks: []
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};
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layer.layers = [];
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this.readChildNodes(node, layer);
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obj.layers.push(layer);
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},
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"Style": function(node, obj) {
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var style = {};
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style.isDefault = node.getAttribute("isDefault");
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this.readChildNodes(node, style);
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obj.styles.push(style);
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},
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"Format": function(node, obj) {
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obj.formats.push(this.getChildValue(node));
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},
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"TileMatrixSetLink": function(node, obj) {
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var tileMatrixSetLink = {};
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this.readChildNodes(node, tileMatrixSetLink);
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obj.tileMatrixSetLinks.push(tileMatrixSetLink);
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},
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"TileMatrixSet": function(node, obj) {
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// node could be child of wmts:Contents or wmts:TileMatrixSetLink
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// duck type wmts:Contents by looking for layers
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if (obj.layers) {
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// TileMatrixSet as object type in schema
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var tileMatrixSet = {};
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tileMatrixSet.matrixIds = [];
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this.readChildNodes(node, tileMatrixSet);
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obj.tileMatrixSets[tileMatrixSet.identifier] = tileMatrixSet;
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} else {
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// TileMatrixSet as string type in schema
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obj.tileMatrixSet = this.getChildValue(node);
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}
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},
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"TileMatrix": function(node, obj) {
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var tileMatrix = {};
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this.readChildNodes(node, tileMatrix);
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obj.matrixIds.push(tileMatrix);
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},
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"ScaleDenominator": function(node, obj) {
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obj.scaleDenominator = parseFloat(this.getChildValue(node));
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},
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"TopLeftCorner": function(node, obj) {
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var topLeftCorner = this.getChildValue(node);
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var coords = topLeftCorner.split(" ");
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obj.topLeftCorner = new OpenLayers.LonLat(parseFloat(coords[1]), parseFloat(coords[0]));
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},
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"TileWidth": function(node, obj) {
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obj.tileWidth = parseInt(this.getChildValue(node));
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},
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"TileHeight": function(node, obj) {
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obj.tileHeight = parseInt(this.getChildValue(node));
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},
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"MatrixWidth": function(node, obj) {
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obj.matrixWidth = parseInt(this.getChildValue(node));
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},
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"MatrixHeight": function(node, obj) {
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obj.matrixHeight = parseInt(this.getChildValue(node));
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},
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// not used for now, can be added in the future though
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/*"Themes": function(node, obj) {
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obj.themes = [];
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this.readChildNodes(node, obj.themes);
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},
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"Theme": function(node, obj) {
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var theme = {};
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this.readChildNodes(node, theme);
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obj.push(theme);
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},*/
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"WSDL": function(node, obj) {
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obj.wsdl = {};
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obj.wsdl.href = node.getAttribute("xlink:href");
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// TODO: other attributes of <WSDL> element
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},
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"ServiceMetadataURL": function(node, obj) {
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obj.serviceMetadataUrl = {};
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obj.serviceMetadataUrl.href = node.getAttribute("xlink:href");
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// TODO: other attributes of <ServiceMetadataURL> element
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}
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},
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"ows": OpenLayers.Format.OWSCommon.v1_1_0.prototype.readers["ows"]
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},
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CLASS_NAME: "OpenLayers.Format.WMTSCapabilities.v1_0_0"
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});
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