wip: moving non wlxml specific extension support from wlxml.js to smartxml.js

[fnpeditor.git] / src / smartxml / smartxml.js

diff --git a/src/smartxml/smartxml.js b/src/smartxml/smartxml.js
index 41e8e19..9215287 100644 (file)
--- a/src/smartxml/smartxml.js
+++ b/src/smartxml/smartxml.js
@@ -779,6 +779,69 @@ $.extend(Document.prototype, Backbone.Events, {
         this._nodeTransformations.register(Transformation);
     },
 
+    registerExtension: function(extension) {
+        //debugger;
+        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) {
+                        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);
+                            }
+
+                        });
+                    });
+                }
+
+                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));
+                            }
+
+                            
+                        });
+                    });
+                }
+            }
+        });
+    },
 
     transform: function(transformation, args) {
         //console.log('transform');