[gtk+] Improve GContentType usage

[Matthias Clasen <matthiasc src gnome org>]

commit 47f4e44aec91cba0d8d2a7b0071b23134335065f
Author: TingPing <tingping tingping se>
Date:   Wed Mar 8 22:52:58 2017 -0500

    Improve GContentType usage
    
    Convert to content type where needed.
    Should fix various issues on Windows and OS X.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=734946

 gtk/gtkfilefilter.c           |   19 +++++++++++++++----
 gtk/gtkrecentfilter.c         |   17 ++++++++++++++---
 gtk/gtkrecentmanager.c        |    6 ++++--
 gtk/inspector/resource-list.c |   12 ++++++++++--
 4 files changed, 43 insertions(+), 11 deletions(-)
---
diff --git a/gtk/gtkfilefilter.c b/gtk/gtkfilefilter.c
index c843cc3..e86f2d8 100644
--- a/gtk/gtkfilefilter.c
+++ b/gtk/gtkfilefilter.c
@@ -669,13 +669,24 @@ gtk_file_filter_filter (GtkFileFilter           *filter,
 
       if ((filter_info->contains & rule->needed) != rule->needed)
        continue;
-      
+
       switch (rule->type)
        {
        case FILTER_RULE_MIME_TYPE:
-         if (filter_info->mime_type != NULL &&
-              g_content_type_is_a (filter_info->mime_type, rule->u.mime_type))
-           return TRUE;
+      if (filter_info->mime_type != NULL)
+        {
+          gchar *filter_content_type, *rule_content_type;
+          gboolean match;
+
+          filter_content_type = g_content_type_from_mime_type (filter_info->mime_type);
+          rule_content_type = g_content_type_from_mime_type (rule->u.mime_type);
+          match = g_content_type_is_a (filter_content_type, rule_content_type);
+          g_free (filter_content_type);
+          g_free (rule_content_type);
+
+          if (match)
+            return TRUE;
+        }
          break;
        case FILTER_RULE_PATTERN:
          if (filter_info->display_name != NULL &&
diff --git a/gtk/gtkrecentfilter.c b/gtk/gtkrecentfilter.c
index bf32dbf..4062db5 100644
--- a/gtk/gtkrecentfilter.c
+++ b/gtk/gtkrecentfilter.c
@@ -743,9 +743,20 @@ gtk_recent_filter_filter (GtkRecentFilter           *filter,
       switch (rule->type)
         {
         case FILTER_RULE_MIME_TYPE:
-          if (filter_info->mime_type != NULL &&
-              g_content_type_is_a (filter_info->mime_type, rule->u.mime_type))
-            return TRUE;
+          if (filter_info->mime_type != NULL)
+            {
+              gchar *filter_content_type, *rule_content_type;
+              gboolean match;
+
+              filter_content_type = g_content_type_from_mime_type (filter_info->mime_type);
+              rule_content_type = g_content_type_from_mime_type (rule->u.mime_type);
+              match = g_content_type_is_a (filter_content_type, rule_content_type);
+              g_free (filter_content_type);
+              g_free (rule_content_type);
+
+              if (match)
+                return TRUE;
+            }
           break;
         case FILTER_RULE_APPLICATION:
           if (filter_info->applications)
diff --git a/gtk/gtkrecentmanager.c b/gtk/gtkrecentmanager.c
index 70077fb..2feaf1b 100644
--- a/gtk/gtkrecentmanager.c
+++ b/gtk/gtkrecentmanager.c
@@ -775,7 +775,7 @@ gtk_recent_manager_add_item_query_info (GObject      *source_object,
   GtkRecentManager *manager = user_data;
   GtkRecentData recent_data;
   GFileInfo *file_info;
-  gchar *uri, *basename;
+  gchar *uri, *basename, *content_type;
 
   uri = g_file_get_uri (file);
 
@@ -801,8 +801,10 @@ gtk_recent_manager_add_item_query_info (GObject      *source_object,
   else
     {
       basename = g_file_get_basename (file);
-      recent_data.mime_type = g_content_type_guess (basename, NULL, 0, NULL);
+      content_type = g_content_type_guess (basename, NULL, 0, NULL);
+      recent_data.mime_type = g_content_type_get_mime_type (content_type);
       g_free (basename);
+      g_free (content_type);
     }
 
   recent_data.app_name = g_strdup (g_get_application_name ());
diff --git a/gtk/inspector/resource-list.c b/gtk/inspector/resource-list.c
index 16e9651..9208251 100644
--- a/gtk/inspector/resource-list.c
+++ b/gtk/inspector/resource-list.c
@@ -187,6 +187,11 @@ populate_details (GtkInspectorResourceList *rl,
   else
     {
       gchar *text;
+      gchar *content_image;
+      gchar *content_text;
+
+      content_image = g_content_type_from_mime_type ("image/*");
+      content_text = g_content_type_from_mime_type ("text/*");
 
       data = g_bytes_get_data (bytes, &size);
       type = g_content_type_guess (name, data, size, NULL);
@@ -199,12 +204,12 @@ populate_details (GtkInspectorResourceList *rl,
       gtk_label_set_text (GTK_LABEL (rl->priv->size_label), text);
       g_free (text);
 
-      if (g_content_type_is_a (type, "text/*"))
+      if (g_content_type_is_a (type, content_text))
         {
           gtk_text_buffer_set_text (rl->priv->buffer, data, -1);
           gtk_stack_set_visible_child_name (GTK_STACK (rl->priv->content), "text");
         }
-      else if (g_content_type_is_a (type, "image/*"))
+      else if (g_content_type_is_a (type, content_image))
         {
           gtk_image_set_from_resource (GTK_IMAGE (rl->priv->image), path);
           gtk_stack_set_visible_child_name (GTK_STACK (rl->priv->content), "image");
@@ -217,6 +222,9 @@ populate_details (GtkInspectorResourceList *rl,
 
       g_free (type);
       g_bytes_unref (bytes);
+
+      g_free (content_image);
+      g_free (content_text);
     }
 
   g_free (path);