openlayers
Version:
Build tools and sources for developing OpenLayers based mapping applications
265 lines (221 loc) • 6.82 kB
JavaScript
goog.provide('ol.format.XMLFeature');
goog.require('ol');
goog.require('ol.array');
goog.require('ol.format.Feature');
goog.require('ol.format.FormatType');
goog.require('ol.xml');
/**
* @classdesc
* Abstract base class; normally only used for creating subclasses and not
* instantiated in apps.
* Base class for XML feature formats.
*
* @constructor
* @extends {ol.format.Feature}
*/
ol.format.XMLFeature = function() {
/**
* @type {XMLSerializer}
* @private
*/
this.xmlSerializer_ = new XMLSerializer();
ol.format.Feature.call(this);
};
ol.inherits(ol.format.XMLFeature, ol.format.Feature);
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.getType = function() {
return ol.format.FormatType.XML;
};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.readFeature = function(source, opt_options) {
if (ol.xml.isDocument(source)) {
return this.readFeatureFromDocument(
/** @type {Document} */ (source), opt_options);
} else if (ol.xml.isNode(source)) {
return this.readFeatureFromNode(/** @type {Node} */ (source), opt_options);
} else if (typeof source === 'string') {
var doc = ol.xml.parse(source);
return this.readFeatureFromDocument(doc, opt_options);
} else {
return null;
}
};
/**
* @param {Document} doc Document.
* @param {olx.format.ReadOptions=} opt_options Options.
* @return {ol.Feature} Feature.
*/
ol.format.XMLFeature.prototype.readFeatureFromDocument = function(
doc, opt_options) {
var features = this.readFeaturesFromDocument(doc, opt_options);
if (features.length > 0) {
return features[0];
} else {
return null;
}
};
/**
* @abstract
* @param {Node} node Node.
* @param {olx.format.ReadOptions=} opt_options Options.
* @return {ol.Feature} Feature.
*/
ol.format.XMLFeature.prototype.readFeatureFromNode = function(node, opt_options) {};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.readFeatures = function(source, opt_options) {
if (ol.xml.isDocument(source)) {
return this.readFeaturesFromDocument(
/** @type {Document} */ (source), opt_options);
} else if (ol.xml.isNode(source)) {
return this.readFeaturesFromNode(/** @type {Node} */ (source), opt_options);
} else if (typeof source === 'string') {
var doc = ol.xml.parse(source);
return this.readFeaturesFromDocument(doc, opt_options);
} else {
return [];
}
};
/**
* @param {Document} doc Document.
* @param {olx.format.ReadOptions=} opt_options Options.
* @protected
* @return {Array.<ol.Feature>} Features.
*/
ol.format.XMLFeature.prototype.readFeaturesFromDocument = function(
doc, opt_options) {
/** @type {Array.<ol.Feature>} */
var features = [];
var n;
for (n = doc.firstChild; n; n = n.nextSibling) {
if (n.nodeType == Node.ELEMENT_NODE) {
ol.array.extend(features, this.readFeaturesFromNode(n, opt_options));
}
}
return features;
};
/**
* @abstract
* @param {Node} node Node.
* @param {olx.format.ReadOptions=} opt_options Options.
* @protected
* @return {Array.<ol.Feature>} Features.
*/
ol.format.XMLFeature.prototype.readFeaturesFromNode = function(node, opt_options) {};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.readGeometry = function(source, opt_options) {
if (ol.xml.isDocument(source)) {
return this.readGeometryFromDocument(
/** @type {Document} */ (source), opt_options);
} else if (ol.xml.isNode(source)) {
return this.readGeometryFromNode(/** @type {Node} */ (source), opt_options);
} else if (typeof source === 'string') {
var doc = ol.xml.parse(source);
return this.readGeometryFromDocument(doc, opt_options);
} else {
return null;
}
};
/**
* @abstract
* @param {Document} doc Document.
* @param {olx.format.ReadOptions=} opt_options Options.
* @protected
* @return {ol.geom.Geometry} Geometry.
*/
ol.format.XMLFeature.prototype.readGeometryFromDocument = function(doc, opt_options) {};
/**
* @abstract
* @param {Node} node Node.
* @param {olx.format.ReadOptions=} opt_options Options.
* @protected
* @return {ol.geom.Geometry} Geometry.
*/
ol.format.XMLFeature.prototype.readGeometryFromNode = function(node, opt_options) {};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.readProjection = function(source) {
if (ol.xml.isDocument(source)) {
return this.readProjectionFromDocument(/** @type {Document} */ (source));
} else if (ol.xml.isNode(source)) {
return this.readProjectionFromNode(/** @type {Node} */ (source));
} else if (typeof source === 'string') {
var doc = ol.xml.parse(source);
return this.readProjectionFromDocument(doc);
} else {
return null;
}
};
/**
* @param {Document} doc Document.
* @protected
* @return {ol.proj.Projection} Projection.
*/
ol.format.XMLFeature.prototype.readProjectionFromDocument = function(doc) {
return this.defaultDataProjection;
};
/**
* @param {Node} node Node.
* @protected
* @return {ol.proj.Projection} Projection.
*/
ol.format.XMLFeature.prototype.readProjectionFromNode = function(node) {
return this.defaultDataProjection;
};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.writeFeature = function(feature, opt_options) {
var node = this.writeFeatureNode(feature, opt_options);
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
return this.xmlSerializer_.serializeToString(node);
};
/**
* @abstract
* @param {ol.Feature} feature Feature.
* @param {olx.format.WriteOptions=} opt_options Options.
* @protected
* @return {Node} Node.
*/
ol.format.XMLFeature.prototype.writeFeatureNode = function(feature, opt_options) {};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.writeFeatures = function(features, opt_options) {
var node = this.writeFeaturesNode(features, opt_options);
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
return this.xmlSerializer_.serializeToString(node);
};
/**
* @abstract
* @param {Array.<ol.Feature>} features Features.
* @param {olx.format.WriteOptions=} opt_options Options.
* @return {Node} Node.
*/
ol.format.XMLFeature.prototype.writeFeaturesNode = function(features, opt_options) {};
/**
* @inheritDoc
*/
ol.format.XMLFeature.prototype.writeGeometry = function(geometry, opt_options) {
var node = this.writeGeometryNode(geometry, opt_options);
ol.DEBUG && console.assert(node.nodeType == Node.ELEMENT_NODE,
'node.nodeType should be ELEMENT');
return this.xmlSerializer_.serializeToString(node);
};
/**
* @abstract
* @param {ol.geom.Geometry} geometry Geometry.
* @param {olx.format.WriteOptions=} opt_options Options.
* @return {Node} Node.
*/
ol.format.XMLFeature.prototype.writeGeometryNode = function(geometry, opt_options) {};