[gxml] Implemented CssSelectorParser E[foo~="bar"] selector

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit b37a40d2b64d3b2f5ba4f15627766bb37a103633
Author: Daniel Espinosa <esodan gmail com>
Date:   Fri Sep 8 07:52:25 2017 -0700

    Implemented CssSelectorParser E[foo~="bar"] selector

 gxml/CssSelectorParser.vala |    6 ++++++
 test/CssSelectorTest.vala   |   42 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 47 insertions(+), 1 deletions(-)
---
diff --git a/gxml/CssSelectorParser.vala b/gxml/CssSelectorParser.vala
index d5fb2f8..10805b4 100644
--- a/gxml/CssSelectorParser.vala
+++ b/gxml/CssSelectorParser.vala
@@ -332,6 +332,12 @@ public class GXml.CssSelectorParser : GLib.Object {
                                if (p == null) return false;
                                if (p == s.value) return true;
                        }
+                       if (is_element && s.selector_type == CssSelectorType.ATTRIBUTE_CONTAINS) {
+                               var p = element.get_attribute (s.data);
+                               if (p == null) return false;
+                               var tl = new GDomTokenList (element, s.data);
+                               if (tl.contains (s.value)) return true;
+                       }
                        if (s.selector_type == CssSelectorType.CLASS) {
                                var p = element.get_attribute ("class");
                                if (p == null) return false;
diff --git a/test/CssSelectorTest.vala b/test/CssSelectorTest.vala
index cab9392..3b06a6a 100644
--- a/test/CssSelectorTest.vala
+++ b/test/CssSelectorTest.vala
@@ -62,7 +62,7 @@ class CssSelectorTest : GXmlTest {
                                warning ("ERROR: "+e.message);
                        }
                });
-               Test.add_func ("/gxml/css-selector/element/attribute", () => {
+               Test.add_func ("/gxml/css-selector/element/attribute/value", () => {
                        try {
                                var cp = new CssSelectorParser ();
                                cp.parse ("child[prop]");
@@ -94,6 +94,46 @@ class CssSelectorTest : GXmlTest {
                                warning ("ERROR: "+e.message);
                        }
                });
+               Test.add_func ("/gxml/css-selector/element/attribute/contains", () => {
+                       try {
+                               var cp = new CssSelectorParser ();
+                               cp.parse ("child[prop~=\"val\"]");
+                               foreach (CssSelectorData sel in cp.selectors) {
+                                       message ("Type: "+sel.selector_type.to_string ()+" : "+sel.data+" : 
"+sel.value);
+                               }
+                               assert (cp.selectors.size == 3);
+                               var s = cp.selectors[0];
+                               assert (s != null);
+                               assert (s.selector_type == CssSelectorType.ELEMENT);
+                               var si = cp.selectors[1];
+                               assert (si != null);
+                               assert (si.selector_type == CssSelectorType.INSIDE);
+                               var sa = cp.selectors[2];
+                               assert (sa != null);
+                               assert (sa.selector_type == CssSelectorType.ATTRIBUTE_CONTAINS);
+                               var d = new GomDocument ();
+                               var r = d.create_element ("root");
+                               d.append_child (r);
+                               var c1 = d.create_element ("child");
+                               r.append_child (c1);
+                               var c2 = d.create_element ("child");
+                               c2.set_attribute ("prop", "val calc soup");
+                               r.append_child (c2);
+                               var c3 = d.create_element ("child");
+                               c3.set_attribute ("prop", "calc val soup");
+                               r.append_child (c3);
+                               var c4 = d.create_element ("child");
+                               c4.set_attribute ("prop", "calc secondary soup");
+                               r.append_child (c4);
+                               assert (!cp.match (r));
+                               assert (!cp.match (c1));
+                               assert (cp.match (c2));
+                               assert (cp.match (c3));
+                               assert (!cp.match (c4));
+                       } catch (GLib.Error e){
+                               warning ("ERROR: "+e.message);
+                       }
+               });
                Test.add_func ("/gxml/css-selector/element/attribute-value", () => {
                        try {
                                var cp = new CssSelectorParser ();