[evince] shell: check for file changes when reopening a PDF

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 46d6ba369d2acc09ffd51bf66751a1a384f018e1
Author: Antonio Eletto <antele gmail com>
Date:   Wed Jan 20 02:46:46 2021 +0000

    shell: check for file changes when reopening a PDF
    
    when reopening a PDF with unsaved changes,
    it show an alert dialog
    
    Fixes #339

 shell/ev-window.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/shell/ev-window.c b/shell/ev-window.c
index 30c4fa1f..eb206621 100644
--- a/shell/ev-window.c
+++ b/shell/ev-window.c
@@ -314,6 +314,8 @@ static void     ev_window_set_page_mode                 (EvWindow         *windo
                                                         EvWindowPageMode  page_mode);
 static void    ev_window_load_job_cb                   (EvJob            *job,
                                                         gpointer          data);
+static gboolean ev_window_check_document_modified      (EvWindow         *ev_window,
+                                                        EvWindowAction    command);
 static void     ev_window_reload_document               (EvWindow         *window,
                                                         EvLinkDest *dest);
 static void    ev_window_document_modified_cb          (EvDocument *document,
@@ -2404,6 +2406,8 @@ ev_window_open_uri (EvWindow       *ev_window,
 
        if (priv->uri &&
            g_ascii_strcasecmp (priv->uri, uri) == 0) {
+               if (ev_window_check_document_modified (ev_window, EV_WINDOW_ACTION_RELOAD))
+                       return;
                ev_window_reload_document (ev_window, dest);
                return;
        }