Change theme handling

So far when loading a theme it also overwrote the preferences the user
set.

Lengthy discussion can be found at
https://github.com/profanity-im/profanity/issues/1077

Now we use `/theme load themename` to load the [colours] part of a
themem only.

`/theme full-load themename` will load the complete theme including
preferences set in there.

Regards https://github.com/profanity-im/profanity/issues/1077

src/command/cmd_ac.c

@@ -354,6 +354,7 @@ cmd_ac_init(void)
 
     theme_ac = autocomplete_new();
     autocomplete_add(theme_ac, "load");
+    autocomplete_add(theme_ac, "full-load");
     autocomplete_add(theme_ac, "list");
     autocomplete_add(theme_ac, "colours");
     autocomplete_add(theme_ac, "properties");
@@ -2414,23 +2415,49 @@ static char*
 _theme_autocomplete(ProfWin *window, const char *const input, gboolean previous)
 {
     char *result = NULL;
+
     if (strncmp(input, "/theme load ", 12) == 0) {
         if (theme_load_ac == NULL) {
             theme_load_ac = autocomplete_new();
             GSList *themes = theme_list();
             GSList *curr = themes;
+
             while (curr) {
                 autocomplete_add(theme_load_ac, curr->data);
                 curr = g_slist_next(curr);
             }
+
             g_slist_free_full(themes, g_free);
             autocomplete_add(theme_load_ac, "default");
         }
+
         result = autocomplete_param_with_ac(input, "/theme load", theme_load_ac, TRUE, previous);
         if (result) {
             return result;
         }
     }
+
+    if (strncmp(input, "/theme full-load ", 17) == 0) {
+        if (theme_load_ac == NULL) {
+            theme_load_ac = autocomplete_new();
+            GSList *themes = theme_list();
+            GSList *curr = themes;
+
+            while (curr) {
+                autocomplete_add(theme_load_ac, curr->data);
+                curr = g_slist_next(curr);
+            }
+
+            g_slist_free_full(themes, g_free);
+            autocomplete_add(theme_load_ac, "default");
+        }
+
+        result = autocomplete_param_with_ac(input, "/theme full-load", theme_load_ac, TRUE, previous);
+        if (result) {
+            return result;
+        }
+    }
+
     result = autocomplete_param_with_ac(input, "/theme", theme_ac, TRUE, previous);
     if (result) {
         return result;

src/command/cmd_defs.c

@@ -2136,15 +2136,17 @@ static struct cmd_t command_defs[] =
         CMD_SYN(
             "/theme list",
             "/theme load <theme>",
+            "/theme full-load <theme>",
             "/theme colours",
             "/theme properties")
         CMD_DESC(
             "Load a theme, includes colours and UI options.")
         CMD_ARGS(
-            { "list",           "List all available themes." },
-            { "load <theme>",   "Load the specified theme. 'default' will reset to the default theme." },
-            { "colours",        "Show colour values as rendered by the terminal." },
-            { "properties",     "Show colour settings for current theme." })
+            { "list",              "List all available themes." },
+            { "load <theme>",      "Load colours from specified theme. 'default' will reset to the default theme." },
+            { "full-load <theme>", "Same as 'load' but will also load preferences set in the theme, not just colours." },
+            { "colours",           "Show colour values as rendered by the terminal." },
+            { "properties",        "Show colour settings for current theme." })
         CMD_EXAMPLES(
             "/theme list",
             "/theme load forest")

src/command/cmd_funcs.c

@@ -804,7 +804,7 @@ _account_set_theme(char *account_name, char *theme)
         ProfAccount *account = accounts_get_account(session_get_account_name());
         if (account) {
             if (g_strcmp0(account->name, account_name) == 0) {
-                theme_load(theme);
+                theme_load(theme, false);
                 ui_load_colours();
                 if (prefs_get_boolean(PREF_ROSTER)) {
                     ui_show_roster();
@@ -1234,13 +1234,13 @@ cmd_disconnect(ProfWin *window, const char *const command, gchar **args)
 
     char *theme = prefs_get_string(PREF_THEME);
     if (theme) {
-        gboolean res = theme_load(theme);
+        gboolean res = theme_load(theme, false);
         prefs_free_string(theme);
         if (!res) {
-            theme_load("default");
+            theme_load("default", false);
         }
     } else {
-        theme_load("default");
+        theme_load("default", false);
     }
     ui_load_colours();
     if (prefs_get_boolean(PREF_ROSTER)) {
@@ -1699,6 +1699,9 @@ cmd_prefs(ProfWin *window, const char *const command, gchar **args)
 gboolean
 cmd_theme(ProfWin *window, const char *const command, gchar **args)
 {
+    // 'full-load' means to load the theme including the settings (not just [colours])
+    gboolean fullload = (g_strcmp0(args[0], "full-load") == 0);
+
     // list themes
     if (g_strcmp0(args[0], "list") == 0) {
         GSList *themes = theme_list();
@@ -1706,10 +1709,10 @@ cmd_theme(ProfWin *window, const char *const command, gchar **args)
         g_slist_free_full(themes, g_free);
 
     // load a theme
-    } else if (g_strcmp0(args[0], "load") == 0) {
+    } else if (g_strcmp0(args[0], "load") == 0 || fullload) {
         if (args[1] == NULL) {
             cons_bad_cmd_usage(command);
-        } else if (theme_load(args[1])) {
+        } else if (theme_load(args[1], fullload)) {
             ui_load_colours();
             prefs_set_string(PREF_THEME, args[1]);
             if (prefs_get_boolean(PREF_ROSTER)) {
@@ -8619,12 +8622,12 @@ cmd_color(ProfWin *window, const char *const command, gchar **args)
 
     char *theme = prefs_get_string(PREF_THEME);
     if (theme) {
-        gboolean res = theme_load(theme);
+        gboolean res = theme_load(theme, false);
 
         if (res) {
             cons_show("Theme reloaded: %s", theme);
         } else {
-            theme_load("default");
+            theme_load("default", false);
         }
 
         prefs_free_string(theme);