[gxml] Set CssSelectorData introspectable

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 34db5e03d9202581a401437aaa038f8a5a719aa2
Author: Daniel Espinosa <esodan gmail com>
Date:   Fri Sep 8 07:35:48 2017 -0700

    Set CssSelectorData introspectable
    
    Using struct is fine for internal Vala or C code,
    but not if exposed, as bindings will be unable to accesss
    or set data or value string members, or even know
    if get value string should or not be freed.

 gxml/CssSelectorParser.vala |   50 +++++++++++++++++++++---------------------
 1 files changed, 25 insertions(+), 25 deletions(-)
---
diff --git a/gxml/CssSelectorParser.vala b/gxml/CssSelectorParser.vala
index 6b0a11a..d5fb2f8 100644
--- a/gxml/CssSelectorParser.vala
+++ b/gxml/CssSelectorParser.vala
@@ -48,11 +48,15 @@ public enum GXml.CssSelectorType {
        AFTER,
        BEFORE
 }
-
-public struct GXml.CssSelectorData {
-       public CssSelectorType selector_type;
-       public string data;
-       public string value;
+public class GXml.CssSelectorData : GLib.Object {
+       public CssSelectorType selector_type { get; set; default = CssSelectorType.ALL; }
+       public string data { get; set; default = ""; }
+       public string value { get; set; default = ""; }
+       public CssSelectorData.with_values (CssSelectorType t, string data, string val) {
+               selector_type = t;
+               this.data = data;
+               value = val;
+       }
 }
 
 public class GXml.CssSelectorParser : GLib.Object {
@@ -69,32 +73,32 @@ public class GXml.CssSelectorParser : GLib.Object {
        }
 
        void parse_class (string css, ref int position) {
-               CssSelectorData idata = { CssSelectorType.INSIDE, " " };
+               CssSelectorData idata = new CssSelectorData.with_values (CssSelectorType.INSIDE, "", "");
                list.add (idata);
                position++;
                StringBuilder sb = new StringBuilder();
                unichar u = 0;
                while (css.get_next_char (ref position, out u) && (u.isalnum() || u == '-'))
                        sb.append_unichar (u);
-               CssSelectorData data = { CssSelectorType.CLASS, sb.str };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.CLASS, sb.str, "");
                list.add (data);
        }
 
        void parse_id (string css, ref int position) {
-               CssSelectorData idata = { CssSelectorType.INSIDE, " " };
+               CssSelectorData idata = new CssSelectorData.with_values (CssSelectorType.INSIDE, "", "");
                list.add (idata);
                position++;
                StringBuilder sb = new StringBuilder();
                unichar u = 0;
                while (css.get_next_char (ref position, out u) && (u.isalnum() || u == '-'))
                        sb.append_unichar (u);
-               CssSelectorData data = { CssSelectorType.ID, sb.str };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.ID, sb.str, "");
                list.add (data);
        }
 
        void parse_all (string css, ref int position) {
                position++;
-               CssSelectorData data = { CssSelectorType.ALL, "*" };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.ALL, "*", "");
                list.add (data);
        }
 
@@ -103,12 +107,12 @@ public class GXml.CssSelectorParser : GLib.Object {
                unichar u = 0;
                while (css.get_next_char (ref position, out u) && (u.isalnum() || u == '-'))
                        sb.append_unichar (u);
-               CssSelectorData data = { CssSelectorType.ELEMENT, sb.str };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.ELEMENT, sb.str, "");
                list.add (data);
        }
 
        void parse_attribute (string css, ref int position) throws GLib.Error {
-               CssSelectorData idata = { CssSelectorType.INSIDE, " " };
+               CssSelectorData idata = new CssSelectorData.with_values (CssSelectorType.INSIDE, "", "");
                list.add (idata);
                position++;
                StringBuilder sb = new StringBuilder();
@@ -124,7 +128,7 @@ public class GXml.CssSelectorParser : GLib.Object {
                while (u.isspace())
                        css.get_next_char (ref position, out u);
                if (u == ']') {
-                       CssSelectorData data = { CssSelectorType.ATTRIBUTE, sb.str };
+                       CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.ATTRIBUTE, 
sb.str, "");
                        list.add (data);
                        return;
                }
@@ -152,18 +156,14 @@ public class GXml.CssSelectorParser : GLib.Object {
                                css.get_next_char (ref position, out u);
                        if (u != ']')
                                throw new CssSelectorError.ATTRIBUTE (_("Invalid end of attribute selector"));
-                       CssSelectorData data = {
-                               CssSelectorType.ATTRIBUTE_EQUAL,
-                               sb.str,
-                               sb1.str
-                       };
+                       CssSelectorData data = new CssSelectorData.with_values 
(CssSelectorType.ATTRIBUTE_EQUAL, sb.str, sb1.str);
                        if (s == 0)
                                data.value = sb1.str.strip();
                        list.add (data);
                        return;
                }
                StringBuilder sb1 = new StringBuilder();
-               CssSelectorData data = { CssSelectorType.ATTRIBUTE, sb.str, "" };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.ATTRIBUTE, sb.str, 
"");
                if (u == '~')
                        data.selector_type = CssSelectorType.ATTRIBUTE_CONTAINS;
                else if (u == '*')
@@ -207,7 +207,7 @@ public class GXml.CssSelectorParser : GLib.Object {
        }
 
        void parse_pseudo (string css, ref int position) throws GLib.Error {
-               CssSelectorData idata = { CssSelectorType.INSIDE, " " };
+               CssSelectorData idata = new CssSelectorData.with_values (CssSelectorType.INSIDE, "", "");
                list.add (idata);
                position++;
                StringBuilder sb = new StringBuilder();
@@ -228,7 +228,7 @@ public class GXml.CssSelectorParser : GLib.Object {
                };
                if (!(sb.str in valid_selectors))
                        throw new CssSelectorError.INVALID (_("Invalid pseudo class selector"));
-               CssSelectorData data = { CssSelectorType.PSEUDO, sb.str };
+               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.PSEUDO, sb.str, "");
                list.add (data);
        }
 
@@ -282,22 +282,22 @@ public class GXml.CssSelectorParser : GLib.Object {
                                parse_element (css, ref position);
                        else if (u == ',') {
                                position++;
-                               CssSelectorData data = { CssSelectorType.AND, "," };
+                               CssSelectorData data = new CssSelectorData.with_values (CssSelectorType.AND, 
",", "");
                                list.add (data);
                        }
                        else if (u == '+') {
                                position++;
-                               CssSelectorData data = { CssSelectorType.AFTER, "+" };
+                               CssSelectorData data = new CssSelectorData.with_values 
(CssSelectorType.AFTER, "+", "");
                                list.add (data);
                        }
                        else if (u == '~') {
                                position++;
-                               CssSelectorData data = { CssSelectorType.BEFORE, "~" };
+                               CssSelectorData data = new CssSelectorData.with_values 
(CssSelectorType.BEFORE, "~", "");
                                list.add (data);
                        }
                        else if (u == '>') {
                                position++;
-                               CssSelectorData data = { CssSelectorType.PARENT, ">" };
+                               CssSelectorData data = new CssSelectorData.with_values 
(CssSelectorType.PARENT, ">", "");
                                list.add (data);
                        }
 //                     if (list.size > 0 && list[list.size - 1].selector_type != CssSelectorType.AND && 
list[list.size - 1].selector_type != CssSelectorType.PARENT