search: Allow regular expression filename matching, improve editor.

- Add a regex toggle to the editor's filename row.
- Implement filename regex search in the advanced search engine.
- Replace legacy filename search code with GPatternSpec matching
- Add expression validation for filename and content patterns,
  provide visual feedback to the user when expressions are invalid,
  and prevent activation.

Author: mtwebster

gresources/nemo-search-bar.glade

@@ -275,6 +275,7 @@ typedef enum
 #define NEMO_PREFERENCES_DEFERRED_ATTR_PRELOAD_LIMIT   "deferred-attribute-preload-limit"
 
 #define NEMO_PREFERENCES_SEARCH_CONTENT_REGEX          "search-content-use-regex"
+#define NEMO_PREFERENCES_SEARCH_FILES_REGEX            "search-files-use-regex"
 #define NEMO_PREFERENCES_SEARCH_REGEX_FORMAT           "search-regex-format"
 #define NEMO_PREFERENCES_SEARCH_USE_RAW                "search-content-use-raw"
 #define NEMO_PREFERENCES_SEARCH_FILE_CASE              "search-file-case-sensitive"

libnemo-private/nemo-global-preferences.h

@@ -36,8 +36,9 @@ struct NemoQueryDetails {
     GList *mime_types;
     gboolean show_hidden;
     gboolean file_case_sensitive;
+    gboolean file_use_regex;
     gboolean content_case_sensitive;
-    gboolean use_regex;
+    gboolean content_use_regex;
     gboolean count_hits;
     gboolean recurse;
 };
@@ -118,6 +119,14 @@ nemo_query_set_content_pattern (NemoQuery *query, const char *text)
     }
 }
 
+gboolean
+nemo_query_has_content_pattern (NemoQuery *query)
+{
+    g_return_val_if_fail (NEMO_IS_QUERY (query), FALSE);
+
+    return query->details->content_pattern != NULL;
+}
+
 char *
 nemo_query_get_location (NemoQuery *query)
 {
@@ -232,18 +241,33 @@ nemo_query_set_content_case_sensitive (NemoQuery *query, gboolean case_sensitive
 }
 
 gboolean
-nemo_query_get_use_regex (NemoQuery *query)
+nemo_query_get_use_file_regex (NemoQuery *query)
+{
+    g_return_val_if_fail (NEMO_IS_QUERY (query), FALSE);
+    return query->details->file_use_regex;
+}
+
+void
+nemo_query_set_use_file_regex (NemoQuery *query, gboolean file_use_regex)
+{
+    g_return_if_fail (NEMO_IS_QUERY (query));
+
+    query->details->file_use_regex = file_use_regex;
+}
+
+gboolean
+nemo_query_get_use_content_regex (NemoQuery *query)
 {
     g_return_val_if_fail (NEMO_IS_QUERY (query), FALSE);
-    return query->details->use_regex;
+    return query->details->content_use_regex;
 }
 
 void
-nemo_query_set_use_regex (NemoQuery *query, gboolean use_regex)
+nemo_query_set_use_content_regex (NemoQuery *query, gboolean content_use_regex)
 {
     g_return_if_fail (NEMO_IS_QUERY (query));
 
-    query->details->use_regex = use_regex;
+    query->details->content_use_regex = content_use_regex;
 }
 
 gboolean

libnemo-private/nemo-query.c

@@ -54,6 +54,7 @@ void           nemo_query_set_file_pattern (NemoQuery *query, const char *text);
 
 char *         nemo_query_get_content_pattern (NemoQuery *query);
 void           nemo_query_set_content_pattern (NemoQuery *query, const char *text);
+gboolean       nemo_query_has_content_pattern (NemoQuery *query);
 
 char *         nemo_query_get_location       (NemoQuery *query);
 void           nemo_query_set_location       (NemoQuery *query, const char *uri);
@@ -71,8 +72,11 @@ void           nemo_query_set_file_case_sensitive (NemoQuery *query, gboolean ca
 gboolean       nemo_query_get_content_case_sensitive (NemoQuery *query);
 void           nemo_query_set_content_case_sensitive (NemoQuery *query, gboolean case_sensitive);
 
-gboolean       nemo_query_get_use_regex      (NemoQuery *query);
-void           nemo_query_set_use_regex      (NemoQuery *query, gboolean use_regex);
+gboolean       nemo_query_get_use_file_regex      (NemoQuery *query);
+void           nemo_query_set_use_file_regex      (NemoQuery *query, gboolean file_use_regex);
+
+gboolean       nemo_query_get_use_content_regex      (NemoQuery *query);
+void           nemo_query_set_use_content_regex      (NemoQuery *query, gboolean content_use_regex);
 
 gboolean       nemo_query_get_recurse         (NemoQuery *query);
 void           nemo_query_set_recurse         (NemoQuery *query, gboolean recurse);