150 lines
4.4 KiB
JavaScript
150 lines
4.4 KiB
JavaScript
/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the 2-clause BSD license.
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* See license.txt in the OpenLayers distribution or repository for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/WMC/v1.js
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*/
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/**
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* Class: OpenLayers.Format.WMC.v1_1_0
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* Read and write WMC version 1.1.0.
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*
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* Differences between 1.1.0 and 1.0.0:
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* - 1.1.0 Layers have optional sld:MinScaleDenominator and
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* sld:MaxScaleDenominator
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*
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* Inherits from:
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* - <OpenLayers.Format.WMC.v1>
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*/
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OpenLayers.Format.WMC.v1_1_0 = OpenLayers.Class(
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OpenLayers.Format.WMC.v1, {
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/**
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* Constant: VERSION
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* {String} 1.1.0
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*/
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VERSION: "1.1.0",
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/**
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* Property: schemaLocation
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* {String} http://www.opengis.net/context
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* http://schemas.opengis.net/context/1.1.0/context.xsd
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*/
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schemaLocation: "http://www.opengis.net/context http://schemas.opengis.net/context/1.1.0/context.xsd",
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/**
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* Constructor: OpenLayers.Format.WMC.v1_1_0
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* Instances of this class are not created directly. Use the
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* <OpenLayers.Format.WMC> constructor instead.
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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.WMC.v1.prototype.initialize.apply(
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this, [options]
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);
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},
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/**
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* Method: read_sld_MinScaleDenominator
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* Read a sld:MinScaleDenominator node.
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*
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* Parameters:
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* layerContext - {Object} An object representing a layer.
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* node - {Element} An element node.
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*/
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read_sld_MinScaleDenominator: function(layerContext, node) {
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var minScaleDenominator = parseFloat(this.getChildValue(node));
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if (minScaleDenominator > 0) {
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layerContext.maxScale = minScaleDenominator;
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}
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},
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/**
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* Method: read_sld_MaxScaleDenominator
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* Read a sld:MaxScaleDenominator node.
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*
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* Parameters:
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* layerContext - {Object} An object representing a layer.
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* node - {Element} An element node.
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*/
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read_sld_MaxScaleDenominator: function(layerContext, node) {
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layerContext.minScale = parseFloat(this.getChildValue(node));
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},
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/**
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* Method: read_wmc_SRS
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*/
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read_wmc_SRS: function(layerContext, node) {
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if (! ("srs" in layerContext)) {
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layerContext.srs = {};
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}
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layerContext.srs[this.getChildValue(node)] = true;
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},
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/**
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* Method: write_wmc_Layer
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* Create a Layer node given a layer context object. This method adds
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* elements specific to version 1.1.0.
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*
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* Parameters:
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* context - {Object} A layer context object.}
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*
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* Returns:
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* {Element} A WMC Layer element node.
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*/
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write_wmc_Layer: function(context) {
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var node = OpenLayers.Format.WMC.v1.prototype.write_wmc_Layer.apply(
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this, [context]
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);
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// min/max scale denominator elements go before the 4th element in v1
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if(context.maxScale) {
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var minSD = this.createElementNS(
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this.namespaces.sld, "sld:MinScaleDenominator"
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);
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minSD.appendChild(this.createTextNode(context.maxScale.toPrecision(16)));
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node.appendChild(minSD);
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}
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if(context.minScale) {
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var maxSD = this.createElementNS(
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this.namespaces.sld, "sld:MaxScaleDenominator"
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);
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maxSD.appendChild(this.createTextNode(context.minScale.toPrecision(16)));
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node.appendChild(maxSD);
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}
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// optional SRS element(s)
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if (context.srs) {
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for(var name in context.srs) {
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node.appendChild(this.createElementDefaultNS("SRS", name));
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}
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}
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// optional FormatList element
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node.appendChild(this.write_wmc_FormatList(context));
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// optional StyleList element
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node.appendChild(this.write_wmc_StyleList(context));
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// optional DimensionList element
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if (context.dimensions) {
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node.appendChild(this.write_wmc_DimensionList(context));
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}
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// OpenLayers specific properties go in an Extension element
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node.appendChild(this.write_wmc_LayerExtension(context));
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return node;
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},
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CLASS_NAME: "OpenLayers.Format.WMC.v1_1_0"
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});
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