From 50bb377e125f679434eccce9d943cf56a1bf54a4 Mon Sep 17 00:00:00 2001
From: Tamaranch <138-Tamaranch@users.noreply.gitlab.xfce.org>
Date: Tue, 12 May 2020 17:28:17 +0200
Subject: [PATCH] Persistent X clipboard

---
 mousepad/mousepad-window.c | 49 ++++++++++++++++++++++++++++++++++----
 1 file changed, 44 insertions(+), 5 deletions(-)

diff --git a/mousepad/mousepad-window.c b/mousepad/mousepad-window.c
index 3de3105..4416305 100644
--- a/mousepad/mousepad-window.c
+++ b/mousepad/mousepad-window.c
@@ -154,6 +154,9 @@ static void              mousepad_window_cursor_changed               (MousepadD
 static void              mousepad_window_selection_changed            (MousepadDocument       *document,
                                                                        gint                    selection,
                                                                        MousepadWindow         *window);
+static void              mousepad_window_selection_extended           (GtkTextBuffer          *buffer,
+                                                                       GParamSpec             *pspec,
+                                                                       MousepadWindow         *window);
 static void              mousepad_window_overwrite_changed            (MousepadDocument       *document,
                                                                        gboolean                overwrite,
                                                                        MousepadWindow         *window);
@@ -404,6 +407,9 @@ struct _MousepadWindow
   /* idle update functions for the recent and go menu */
   guint                update_recent_menu_id;
   guint                update_go_menu_id;
+
+  /* persistent X clipboard */
+  GdkAtom              _MOUSEPAD_X_CLIPBOARD;
 };
 
 
@@ -1003,6 +1009,9 @@ mousepad_window_init (MousepadWindow *window)
   window->replace_dialog = NULL;
   window->active = NULL;
   window->recent_manager = NULL;
+  window->_MOUSEPAD_X_CLIPBOARD = gdk_atom_intern ("_MOUSEPAD_X_CLIPBOARD", FALSE);
+  gtk_clipboard_set_text (gtk_widget_get_clipboard (GTK_WIDGET (window),
+                                                    window->_MOUSEPAD_X_CLIPBOARD), "", 0);
 
 #if GTK_CHECK_VERSION(3, 0, 0)
   gtk_window_set_has_resize_grip (GTK_WINDOW (window), TRUE);
@@ -2205,11 +2214,12 @@ mousepad_window_selection_changed (MousepadDocument *document,
                                    gint              selection,
                                    MousepadWindow   *window)
 {
-  GtkAction   *action;
-  guint        i;
-  const gchar *action_names1[] = { "tabs-to-spaces", "spaces-to-tabs", "duplicate", "strip-trailing" };
-  const gchar *action_names2[] = { "line-up", "line-down" };
-  const gchar *action_names3[] = { "cut", "copy", "delete", "lowercase", "uppercase", "titlecase", "opposite-case" };
+  GtkAction    *action;
+  guint         i;
+  GtkClipboard *clipboard_1, *clipboard_2;
+  const gchar  *action_names1[] = { "tabs-to-spaces", "spaces-to-tabs", "duplicate", "strip-trailing" };
+  const gchar  *action_names2[] = { "line-up", "line-down" };
+  const gchar  *action_names3[] = { "cut", "copy", "delete", "lowercase", "uppercase", "titlecase", "opposite-case" };
 
   /* sensitivity of the change selection action */
   action = gtk_action_group_get_action (window->action_group, "change-selection");
@@ -2235,6 +2245,35 @@ mousepad_window_selection_changed (MousepadDocument *document,
       action = gtk_action_group_get_action (window->action_group, action_names3[i]);
       gtk_action_set_sensitive (action, selection > 0);
     }
+
+  /* persistent X clipboard */
+  if (selection)
+    g_signal_connect (G_OBJECT (document->buffer), "notify::cursor-position",
+                      G_CALLBACK (mousepad_window_selection_extended), window);
+  else
+    {
+      mousepad_disconnect_by_func (G_OBJECT (document->buffer),
+                                   mousepad_window_selection_extended, window);
+      clipboard_1 = gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
+      clipboard_2 = gtk_widget_get_clipboard (GTK_WIDGET (window), window->_MOUSEPAD_X_CLIPBOARD);
+      gtk_clipboard_set_text (clipboard_1, gtk_clipboard_wait_for_text (clipboard_2), -1);
+    }
+}
+
+
+
+static void
+mousepad_window_selection_extended (GtkTextBuffer  *buffer,
+                                    GParamSpec     *pspec,
+                                    MousepadWindow *window)
+{
+  GtkClipboard *clipboard;
+
+  g_return_if_fail (GTK_IS_TEXT_BUFFER (buffer));
+  g_return_if_fail (MOUSEPAD_IS_WINDOW (window));
+
+  clipboard = gtk_widget_get_clipboard (GTK_WIDGET (window), window->_MOUSEPAD_X_CLIPBOARD);
+  gtk_text_buffer_copy_clipboard (buffer, clipboard);
 }
 
 
-- 
2.26.2