Add ol.format.XML

src/ol/format/xmlformat.js

@@ -0,0 +1,209 @@
+goog.provide('ol.format.XML');
+
+goog.require('goog.asserts');
+goog.require('goog.dom.xml');
+goog.require('ol.format.Format');
+goog.require('ol.format.FormatType');
+goog.require('ol.proj');
+
+
+
+/**
+ * @constructor
+ * @extends {ol.format.Format}
+ */
+ol.format.XML = function() {
+  goog.base(this);
+};
+goog.inherits(ol.format.XML, ol.format.Format);
+
+
+/**
+ * @param {Document|Node|Object|string} source Source.
+ * @private
+ * @return {Document} Document.
+ */
+ol.format.XML.prototype.getDocument_ = function(source) {
+  if (source instanceof Document) {
+    return source;
+  } else if (goog.isString(source)) {
+    return goog.dom.xml.loadXml(source);
+  } else {
+    goog.asserts.fail();
+    return null;
+  }
+};
+
+
+/**
+ * @param {Document|Node|Object|string} source Source.
+ * @private
+ * @return {Document|Node} Document.
+ */
+ol.format.XML.prototype.getDocumentOrNode_ = function(source) {
+  if (source instanceof Document) {
+    return source;
+  } else if (source instanceof Node) {
+    return source;
+  } else if (goog.isString(source)) {
+    return goog.dom.xml.loadXml(source);
+  } else {
+    goog.asserts.fail();
+    return null;
+  }
+};
+
+
+/**
+ * @param {Document|Node|Object|string} source Source.
+ * @private
+ * @return {Node} Node.
+ */
+ol.format.XML.prototype.getNode_ = function(source) {
+  if (source instanceof Node) {
+    return source;
+  } else {
+    goog.asserts.fail();
+    return null;
+  }
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.getType = function() {
+  return ol.format.FormatType.XML;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.readFeature = function(source) {
+  return this.readFeatureFromNode(this.getNode_(source));
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @return {ol.Feature} Feature.
+ */
+ol.format.XML.prototype.readFeatureFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.readFeatures = function(source) {
+  var documentOrNode = this.getDocumentOrNode_(source);
+  if (documentOrNode instanceof Document) {
+    return this.readFeaturesFromDocument(documentOrNode);
+  } else if (documentOrNode instanceof Node) {
+    return this.readFeaturesFromNode(documentOrNode);
+  } else {
+    goog.asserts.fail();
+    return null;
+  }
+};
+
+
+/**
+ * @param {Document} doc Document.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.XML.prototype.readFeaturesFromDocument = function(doc) {
+  goog.asserts.assert(doc.childNodes.length == 1);
+  return this.readFeaturesFromNode(doc.firstChild);
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @protected
+ * @return {Array.<ol.Feature>} Features.
+ */
+ol.format.XML.prototype.readFeaturesFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.readGeometry = function(source) {
+  return this.readGeometryFromNode(this.getNode_(source));
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @protected
+ * @return {ol.geom.Geometry} Geometry.
+ */
+ol.format.XML.prototype.readGeometryFromNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.readProjection = function(source) {
+  return this.readProjectionFromNode(this.getNode_(source));
+};
+
+
+/**
+ * @param {Node} node Node.
+ * @protected
+ * @return {ol.proj.Projection} Projection.
+ */
+ol.format.XML.prototype.readProjectionFromNode = function(node) {
+  return ol.proj.get('EPSG:4326');
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.writeFeature = function(feature) {
+  return this.writeFeatureNode(feature);
+};
+
+
+/**
+ * @param {ol.Feature} feature Feature.
+ * @protected
+ * @return {Node} Node.
+ */
+ol.format.XML.prototype.writeFeatureNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.writeFeatures = function(features) {
+  return this.writeFeaturesNode(features);
+};
+
+
+/**
+ * @param {Array.<ol.Feature>} features Features.
+ * @protected
+ * @return {Node} Node.
+ */
+ol.format.XML.prototype.writeFeaturesNode = goog.abstractMethod;
+
+
+/**
+ * @inheritDoc
+ */
+ol.format.XML.prototype.writeGeometry = function(geometry) {
+  return this.writeGeometryNode(geometry);
+};
+
+
+/**
+ * @param {ol.geom.Geometry} geometry Geometry.
+ * @protected
+ * @return {Node} Node.
+ */
+ol.format.XML.prototype.writeGeometryNode = goog.abstractMethod;