[gxml] GDocument: implemented query_selectors_all()

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 878791d38b9ea81f577c5e4cf6e27868e099f0cc
Author: Daniel Espinosa <esodan gmail com>
Date:   Wed Sep 6 10:53:07 2017 -0700

    GDocument: implemented query_selectors_all()

 gxml/GXmlDocument.vala  |   12 +++++++-
 gxml/GXmlElement.vala   |    1 +
 gxml/GomElement.vala    |    5 +--
 test/GDocumentTest.vala |   61 +++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 74 insertions(+), 5 deletions(-)
---
diff --git a/gxml/GXmlDocument.vala b/gxml/GXmlDocument.vala
index e97bb1c..4078878 100644
--- a/gxml/GXmlDocument.vala
+++ b/gxml/GXmlDocument.vala
@@ -347,8 +347,16 @@ public class GXml.GDocument : GXml.GNode,
   public int child_element_count { get { return children_nodes.size; } }
 
   public DomNodeList query_selector_all (string selectors) throws GLib.Error  {
-    DomNodeList nulllist = null;
-    return nulllist; // FIXME
+    var cs = new CssSelectorParser ();
+    cs.parse (selectors);
+    var l = new GomNodeList ();
+    foreach (GXml.Node e in children_nodes) {
+      if (!(e is DomElement)) continue;
+      if (cs.match (e as DomElement))
+        l.add (e as DomNode);
+      l.add_all ((e as DomElement).query_selector_all (selectors));
+    }
+    return l as DomNodeList;
   }
   // DomNonElementParentNode
   public DomElement? get_element_by_id (string element_id) throws GLib.Error {
diff --git a/gxml/GXmlElement.vala b/gxml/GXmlElement.vala
index cc90781..b6ce1ab 100644
--- a/gxml/GXmlElement.vala
+++ b/gxml/GXmlElement.vala
@@ -321,6 +321,7 @@ public class GXml.GElement : GXml.GNonDocumentChildNode,
       if (!(e is DomElement)) continue;
       if (cs.match (e as DomElement))
         l.add (e as DomNode);
+      l.add_all ((e as DomElement).query_selector_all (selectors));
     }
     return l as DomNodeList;
   }
diff --git a/gxml/GomElement.vala b/gxml/GomElement.vala
index 8884fa4..f1c6675 100644
--- a/gxml/GomElement.vala
+++ b/gxml/GomElement.vala
@@ -270,10 +270,9 @@ public class GXml.GomElement : GomNode,
     var l = new GomNodeList ();
     foreach (DomNode e in child_nodes) {
       if (!(e is DomElement)) continue;
-      if (cs.match (e as DomElement)) {
+      if (cs.match (e as DomElement))
         l.add (e);
-        l.add_all ((e as DomElement).query_selector_all (selectors));
-      }
+      l.add_all ((e as DomElement).query_selector_all (selectors));
     }
     return l;
   }
diff --git a/test/GDocumentTest.vala b/test/GDocumentTest.vala
index 2cc81f3..f49cc25 100644
--- a/test/GDocumentTest.vala
+++ b/test/GDocumentTest.vala
@@ -345,5 +345,66 @@ class GDocumentTest : GXmlTest {
                        var doc = new GDocument ();
                        assert (doc.parent == null);
                });
+               Test.add_func ("/gxml/gdocument/css-selector", () => {
+                       try {
+                               var d = new GDocument () as DomDocument;
+                               var r = d.create_element ("root");
+                               d.append_child (r);
+                               var c1 = d.create_element ("child");
+                               c1.set_attribute ("class", "error");
+                               r.append_child (c1);
+                               var c2 = d.create_element ("child");
+                               c2.set_attribute ("class", "warning");
+                               r.append_child (c2);
+                               var c3 = d.create_element ("child");
+                               c3.set_attribute ("class", "error warning");
+                               r.append_child (c3);
+                               var c4 = d.create_element ("child");
+                               c4.set_attribute ("class", "error calc");
+                               r.append_child (c4);
+                               var c5 = d.create_element ("child");
+                               r.append_child (c5);
+                               var c51 = d.create_element ("child");
+                               c5.append_child (c51);
+                               var n1 = d.query_selector ("child");
+                               assert (n1 != null);
+                               assert (n1.get_attribute ("class") == "error");
+                               var n2 = d.query_selector ("child.warning");
+                               assert (n2 != null);
+                               assert (n2.get_attribute ("class") == "warning");
+                               var n3 = d.query_selector ("child[class]");
+                               assert (n3 != null);
+                               assert (n3.get_attribute ("class") == "error");
+                               var n4 = d.query_selector ("child[class=\"error calc\"]");
+                               assert (n4 != null);
+                               assert (n4.get_attribute ("class") == "error calc");
+                               var l1 = d.query_selector_all ("child");
+                               assert (l1 != null);
+                               message (l1.length.to_string ());
+                               assert (l1.length == 6);
+                               assert (l1.item (4).node_name == "child");
+                               var l2 = d.query_selector_all ("child[class]");
+                               assert (l2 != null);
+                               assert (l2.length == 4);
+                               assert (l2.item (3).node_name == "child");
+                               var l3 = d.query_selector_all ("child[class=\"error\"]");
+                               assert (l3 != null);
+                               assert (l3.length == 1);
+                               assert (l3.item (0).node_name == "child");
+                               var c6 = d.create_element ("child");
+                               c6.set_attribute ("prop", "val1");
+                               r.append_child (c6);
+                               var c7 = d.create_element ("child");
+                               c7.set_attribute ("prop", "val1");
+                               r.append_child (c7);
+                               var l4 = d.query_selector_all ("child[prop=\"val1\"]");
+                               assert (l4 != null);
+                               assert (l4.length == 2);
+                               assert (l4.item (0).node_name == "child");
+                       } catch (GLib.Error e) {
+                   GLib.message ("Error: "+e.message);
+                   assert_not_reached ();
+                 }
+               });
        }
 }