[gxml] DOM4: Implementing DomAttr on GAttribute

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit e2fcf886bef112db6347c5a9bc38fe4a057ec3c0
Author: Daniel Espinosa <esodan gmail com>
Date:   Wed Jul 13 16:27:41 2016 -0500

    DOM4: Implementing DomAttr on GAttribute
    
    This is a work in progress, it doesn't compile at all. Requires to
    implement all interfaces before start to fix compilation.

 gxml/DomAttr.vala       |    2 +-
 gxml/GXmlAttribute.vala |   33 ++++++++++++++++++++++++++++++---
 gxml/GXmlDocument.vala  |    2 +-
 gxml/GXmlElement.vala   |    2 +-
 4 files changed, 33 insertions(+), 6 deletions(-)
---
diff --git a/gxml/DomAttr.vala b/gxml/DomAttr.vala
index ee403f7..6eb844d 100644
--- a/gxml/DomAttr.vala
+++ b/gxml/DomAttr.vala
@@ -27,5 +27,5 @@ public interface GXml.DomAttr {
   public abstract string name { get; }
   public abstract string @value { get; set; }
 
-  public abstract bool specified { get; } // useless; always returns true
+  public virtual bool specified { get { return true; } } // useless; always returns true
 }
diff --git a/gxml/GXmlAttribute.vala b/gxml/GXmlAttribute.vala
index fdd6353..a32e371 100644
--- a/gxml/GXmlAttribute.vala
+++ b/gxml/GXmlAttribute.vala
@@ -24,7 +24,7 @@ using Gee;
 /**
  * Class implemeting {@link GXml.Attribute} interface, not tied to libxml-2.0 library.
  */
-public class GXml.GAttribute : GXml.GNode, GXml.Attribute
+public class GXml.GAttribute : GXml.GNode, GXml.Attribute, GXml.DomAttr
 {
   private Xml.Attr* _attr;
   public GAttribute (GDocument doc, Xml.Attr *node)
@@ -51,7 +51,7 @@ public class GXml.GAttribute : GXml.GNode, GXml.Attribute
       
     }
   }
-  public override string name {
+  public override string GXml.Node.name {
     owned get {
       return _attr->name.dup ();
     }
@@ -73,7 +73,7 @@ public class GXml.GAttribute : GXml.GNode, GXml.Attribute
         _node->set_ns_prop (_attr->ns, _attr->name, value);
     }
   }
-  public string prefix {
+  public string GXml.Attribute.prefix {
     owned get {
       if (_attr == null) return "";
       if (_attr->ns == null) return "";
@@ -86,4 +86,31 @@ public class GXml.GAttribute : GXml.GNode, GXml.Attribute
       return to_gnode (document as GDocument, _node);
     }
   }
+  // DomAttr implementation
+  public string? namespace_uri {
+    get {
+      if (namespace == null) return null;
+      return namespace.uri;
+    }
+  }
+  public string? GXml.DomAttr.prefix {
+    get {
+      if (namespace == null) return null;
+      return namespace.prefix;
+    }
+  }
+  public string local_name { get { return (this as GXml.Node).name; } }
+  public string GXml.DomAttr.name {
+    get {
+      if (namespace == null) return (this as GXml.Node).name;
+    }
+  }
+  public string @value {
+    get {
+      return (this as GXml.Node).value;
+    }
+    set {
+      (this as GXml.Node).value = value;
+    }
+  }
 }
diff --git a/gxml/GXmlDocument.vala b/gxml/GXmlDocument.vala
index a63036e..8e729dc 100644
--- a/gxml/GXmlDocument.vala
+++ b/gxml/GXmlDocument.vala
@@ -29,7 +29,7 @@ using Xml;
  * This class use {@link Xml.TextWriter} to write down XML documents using
  * its contained {@link GXml.Node} childs or other XML structures.
  */
-public class GXml.GDocument : GXml.GNode, GXml.Document
+public class GXml.GDocument : GXml.GNode, GXml.Document, GXml.DomDocument
 {
   protected Xml.Doc* doc;
   protected Xml.Buffer _buffer;
diff --git a/gxml/GXmlElement.vala b/gxml/GXmlElement.vala
index af0b4d4..252fe88 100644
--- a/gxml/GXmlElement.vala
+++ b/gxml/GXmlElement.vala
@@ -25,7 +25,7 @@ using Gee;
 /**
  * Class implemeting {@link GXml.Element} interface, not tied to libxml-2.0 library.
  */
-public class GXml.GElement : GXml.GNode, GXml.Element
+public class GXml.GElement : GXml.GNode, GXml.Element, GXml.DomElement
 {
   public GElement (GDocument doc, Xml.Node *node) {
     _node = node;