},
registerMethod: function(methodName, method) {
+ if(this[methodName]) {
+ throw new Error('Cannot extend document with method name {methodName}. Name already exists.'
+ .replace('{methodName}', methodName)
+ );
+ }
this[methodName] = method;
},
},
registerNodeMethod: function(methodName, method) {
+ if(this._nodeMethods[methodName]) {
+ throw new Error('Cannot extend document with method name {methodName}. Name already exists.'
+ .replace('{methodName}', methodName)
+ );
+ }
this._nodeMethods[methodName] = method;
},
var doc = this,
existingPropertyNames = _.values(this);
- var getTrans = function(desc, methodName) {
- if(typeof desc === 'function') {
- desc = {impl: desc};
- }
- if(!desc.impl) {
- throw new Error('Got transformation description without implementation.')
- }
- desc.name = desc.name || methodName;
- return desc;
- };
-
- [
- {source: extension.document, target: doc},
- {source: extension.documentNode, target: [doc.ElementNodeFactory.prototype, doc.TextNodeFactory.prototype]},
-
- ].forEach(function(mapping) {
- if(mapping.source) {
- if(mapping.source.methods) {
- existingPropertyNames = _.values(mapping.target)
- _.pairs(mapping.source.methods).forEach(function(pair) {
+ ['document', 'documentNode'].forEach(function(dstName) {
+ var dstExtension = extension[dstName];
+ if(dstExtension) {
+ if(dstExtension.methods) {
+ _.pairs(dstExtension.methods).forEach(function(pair) {
var methodName = pair[0],
method = pair[1],
- targets = _.isArray(mapping.target) ? mapping.target : [mapping.target];
- if(_.contains(existingPropertyNames, methodName)) {
- throw new Error('Cannot extend {target} with method name {methodName}. Name already exists.'
- .replace('{target}', mapping.target)
- .replace('{methodName}', methodName)
- );
- }
- targets.forEach(function(target) {
- if(target === doc) {
- target.registerMethod(methodName, method);
- } else {
- doc.registerNodeMethod(methodName, method);
- }
-
- });
+ operation;
+ operation = {document: 'registerMethod', documentNode: 'registerNodeMethod'}[dstName];
+ doc[operation](methodName, method);
+
});
}
- if(mapping.source.transformations) {
- _.pairs(mapping.source.transformations).forEach(function(pair) {
- var transformation = getTrans(pair[1], pair[0]),
- targets = _.isArray(mapping.target) ? mapping.target : [mapping.target];
- targets.forEach(function(target) {
- if(target === doc) {
- target.registerTransformation(transformations.createContextTransformation(transformation));
- } else {
- doc.registerNodeTransformation(transformations.createContextTransformation(transformation));
- }
-
-
- });
+ if(dstExtension.transformations) {
+ _.pairs(dstExtension.transformations).forEach(function(pair) {
+ var name = pair[0],
+ desc = pair[1],
+ operation;
+ operation = {document: 'registerTransformation', documentNode: 'registerNodeTransformation'}[dstName];
+ doc[operation](transformations.createContextTransformation(desc, name));
});
}
}