From 85331f59b2aa174291878f90633f7189fd221628 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Aleksander=20=C5=81ukasz?=
 <aleksander.lukasz@nowoczesnapolska.org.pl>
Date: Thu, 16 Jan 2014 09:44:43 +0100
Subject: [PATCH] wlxml: metadata wip - part of a new api approach

---
 src/wlxml/extensions/metadata/metadata.js     | 46 +++++++++++++------
 .../extensions/metadata/metadata.test.js      | 39 ++++++++++++----
 src/wlxml/wlxml.js                            |  2 +-
 3 files changed, 64 insertions(+), 23 deletions(-)

diff --git a/src/wlxml/extensions/metadata/metadata.js b/src/wlxml/extensions/metadata/metadata.js
index 4136673..86bd8ee 100644
--- a/src/wlxml/extensions/metadata/metadata.js
+++ b/src/wlxml/extensions/metadata/metadata.js
@@ -5,6 +5,34 @@ define(function(require) {
 var _ = require('libs/underscore'),
     metadataKey = 'wlxml.metadata';
 
+var Row = function(key, value) {
+    this.key = key;
+    this.value  = value;
+};
+_.extend(Row.prototype, {
+    setKey: function(key) {
+        this.key = key;
+    },
+    getKey: function() {
+        return this.key;
+    },
+    setValue: function(value) {
+        this.value = value;
+    },
+    getValue: function() {
+        return this.value;
+    }
+});
+
+// var Metadata = function(node) {
+//     this._rows = [];
+// }
+
+// _.extend(Metadata.prototype, {
+//     forEach: function(callback) {
+//         this.
+//     }
+// })
 
 var methods = {
     getMetadata: function() {
@@ -13,20 +41,12 @@ var methods = {
 };
 
 var transformations = {
-    addMetadataRow: function(row) {
-        this.setMetadataRow(null, row);
-    },
-
-    setMetadataRow: function(index, row) {
-        var metadata = this.getData(metadataKey) || [];
-        if(typeof index !== 'number' || index > metadata.length - 1) {
-            metadata.push(row);
-            index = metadata.length - 1;
-        } else {
-            metadata[index] = _.extend(metadata[index], row);
-        }
+    addMetadata: function(desc) {
+        var metadata = this.getData(metadataKey) || [],
+            row = new Row(desc.key, desc.value);
+        metadata.push(row);
         this.setData(metadataKey, metadata);
-        this.triggerChangeEvent('metadataChange', {index: index});
+        return row;
     }
 };
 
diff --git a/src/wlxml/extensions/metadata/metadata.test.js b/src/wlxml/extensions/metadata/metadata.test.js
index 00e5c17..5de573b 100644
--- a/src/wlxml/extensions/metadata/metadata.test.js
+++ b/src/wlxml/extensions/metadata/metadata.test.js
@@ -16,22 +16,42 @@ var getDocumentFromXML = function(xml, options) {
 
 
 describe.only('Metadata API', function() {
-    it('allows to set metadata on an element node', function() {
+    it('returns empty metadata for node without metadata', function() {
         var doc = getDocumentFromXML('<section></section>');
-        expect(doc.root.getMetadata()).to.deep.equal([]);
-        doc.root.addMetadataRow({key: 'key', value: 'value'});
-        expect(doc.root.getMetadata()).to.deep.equal([{key: 'key', value: 'value'}]);
+        expect(doc.root.getMetadata().length).to.equal(0);
     });
+    it('allows to set metadata on an element node', function() {
+        var doc = getDocumentFromXML('<section></section>');
 
-    it('reads node\'s metadata from its metadata child node', function() {
-        var doc = getDocumentFromXML('<section><metadata><dc:key>value</dc:key></metadata></section>');
-        expect(doc.root.getMetadata()).to.deep.equal([{key: 'key', value: 'value'}]);
+        var row = doc.root.addMetadata({key: 'key', value: 'value'}),
+            metadata = doc.root.getMetadata();
+
+        expect(metadata.length).to.equal(1);
+        expect(metadata[0]).to.equal(row, 'aaa');
+
+        expect(row.getKey()).to.equal('key');
+        expect(row.getValue()).to.equal('value');
+    });
+    // it('allows to remove specific metadata row', function() {
+    //     var doc = getDocumentFromXML('<section><metadata><dc:key>value</dc:key><dc:key>value</dc:key></metadata></section>'),
+    //         metadata = doc.root.getMetadata();
+    //     expect(metadata.length).to.equal(2);
+    //     row.remove();
+    //     expect(metadata.length)
+    //     expect(metadata[0].getValue()).to.equal('value');
+    // });
+    it('reads node\'s metadata from source of its metadata child node', function() {
+        var doc = getDocumentFromXML('<section><metadata><dc:key>value</dc:key></metadata></section>'),
+            metadata = doc.root.getMetadata();
+        expect(metadata.length).to.equal(1);
+        expect(metadata[0].getKey()).to.equal('key');
+        expect(metadata[0].getValue()).to.equal('value');
     });
 
     it('serializes node\'s metadata to its metadata child node', function() {
         var doc = getDocumentFromXML('<section></section>');
 
-        doc.root.addMetadataRow({key: 'key', value: 'value'});
+        doc.root.addMetadata({key: 'key', value: 'value'});
 
         var metadataNodes = $(doc.toXML()).children('metadata'),
             keyNodes = metadataNodes.children();
@@ -41,10 +61,11 @@ describe.only('Metadata API', function() {
         expect(keyNodes[0].tagName.toLowerCase()).to.equal('dc:key');
         expect($(keyNodes[0]).text()).to.equal('value');
     });
-    it('doesnt show metadata node on nodes contents', function() {
+    it('doesn\'t show metadata node on nodes contents', function() {
         var doc = getDocumentFromXML('<section><metadata><dc:key>value</dc:key></metadata></section>');
         expect(doc.root.contents()).to.have.length(0);
     });
+
 });
 
 
diff --git a/src/wlxml/wlxml.js b/src/wlxml/wlxml.js
index 6c6c40c..539d792 100644
--- a/src/wlxml/wlxml.js
+++ b/src/wlxml/wlxml.js
@@ -269,7 +269,7 @@ $.extend(WLXMLDocument.prototype, {
                 owner = doc.createDocumentNode(metadataNode.parent()[0]);
                 
             metadataNode.children().each(function() {
-                owner.addMetadataRow({key: (this.tagName).toLowerCase().substr(prefixLength), value: $(this).text()});
+                owner.addMetadata({key: (this.tagName).toLowerCase().substr(prefixLength), value: $(this).text()});
             });
             metadataNode.remove();
         });
-- 
2.20.1