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[easytag/wip/application-window: 24/54] Split progress bar from status bar

commit 21208c2e87e066a7284a256302be5d5f5c662a9b
Author: David King <amigadave amigadave com>
Date:   Fri Aug 15 16:10:20 2014 +0100

    Split progress bar from status bar
    
    There is no need to subclass GtkProgressBar, so just move the progress
    bar code to a separate file.

 Makefile.am              |    2 +
 src/application_window.c |   59 +++++++++++++++++++++++++++++++++------------
 src/application_window.h |    2 +
 src/bar.c                |   11 --------
 src/bar.h                |    6 ----
 src/easytag.c            |   39 +++++++++++++++--------------
 src/gtk2_compat.c        |   16 +-----------
 src/gtk2_compat.h        |    2 -
 src/progress_bar.c       |   31 ++++++++++++++++++++++++
 src/progress_bar.h       |   29 ++++++++++++++++++++++
 src/scan_dialog.c        |   24 ++++++++++--------
 11 files changed, 141 insertions(+), 80 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 532fa1b..af7586d 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -59,6 +59,7 @@ easytag_SOURCES = \
        src/picture.c \
        src/playlist_dialog.c \
        src/preferences_dialog.c \
+       src/progress_bar.c \
        src/scan.c \
        src/scan_dialog.c \
        src/search_dialog.c \
@@ -111,6 +112,7 @@ easytag_headers = \
        src/picture.h \
        src/playlist_dialog.h \
        src/preferences_dialog.h \
+       src/progress_bar.h \
        src/scan.h \
        src/scan_dialog.h \
        src/search_dialog.h \
diff --git a/src/application_window.c b/src/application_window.c
index 414129f..a86339b 100644
--- a/src/application_window.c
+++ b/src/application_window.c
@@ -35,6 +35,7 @@
 #include "picture.h"
 #include "playlist_dialog.h"
 #include "preferences_dialog.h"
+#include "progress_bar.h"
 #include "search_dialog.h"
 #include "scan.h"
 #include "scan_dialog.h"
@@ -53,6 +54,8 @@ struct _EtApplicationWindowPrivate
     GtkWidget *file_area;
     GtkWidget *log_area;
     GtkWidget *tag_area;
+    GtkWidget *progress_bar;
+
     GtkWidget *cddb_dialog;
     GtkWidget *load_files_dialog;
     GtkWidget *playlist_dialog;
@@ -484,10 +487,10 @@ on_delete (GSimpleAction *action,
     nb_files_to_delete = gtk_tree_selection_count_selected_rows (selection);
 
     /* Initialize status bar */
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar),0);
+    et_application_window_progress_set_fraction (self, 0.0);
     progress_bar_index = 0;
     g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, nb_files_to_delete);
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+    et_application_window_progress_set_text (self, progress_bar_text);
 
     /* Set to unsensitive all command buttons (except Quit button) */
     et_application_window_disable_command_actions (self);
@@ -523,12 +526,10 @@ on_delete (GSimpleAction *action,
         et_application_window_browser_select_file_by_et_file (self, ETFile,
                                                               FALSE);
         fraction = (++progress_bar_index) / (double) nb_files_to_delete;
-        gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (ProgressBar),
-                                       fraction);
+        et_application_window_progress_set_fraction (self, fraction);
         g_snprintf (progress_bar_text, 30, "%d/%d", progress_bar_index,
                     nb_files_to_delete);
-        gtk_progress_bar_set_text (GTK_PROGRESS_BAR (ProgressBar),
-                                   progress_bar_text);
+        et_application_window_progress_set_text (self, progress_bar_text);
         /* FIXME: Needed to refresh status bar */
         while (gtk_events_pending ())
         {
@@ -560,8 +561,8 @@ on_delete (GSimpleAction *action,
                 }
                 break;
             case -1:
-                // Stop deleting files + reinit progress bar
-                gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar),0.0);
+                /* Stop deleting files + reinit progress bar. */
+                et_application_window_progress_set_fraction (self, 0.0);
                 /* To update state of command buttons. */
                 et_application_window_update_actions (self);
                 et_application_window_browser_set_sensitive (self, TRUE);
@@ -597,8 +598,8 @@ on_delete (GSimpleAction *action,
     et_application_window_tag_area_set_sensitive (self, TRUE);
     et_application_window_file_area_set_sensitive (self, TRUE);
 
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), "");
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0);
+    et_application_window_progress_set_text (self, "");
+    et_application_window_progress_set_fraction (self, 0.0);
     Statusbar_Message(msg,TRUE);
     g_free(msg);
 
@@ -882,7 +883,7 @@ on_remove_tags (GSimpleAction *action,
     ET_Save_File_Data_From_UI (ETCore->ETFileDisplayed);
 
     /* Initialize status bar */
-    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (ProgressBar), 0.0);
+    et_application_window_progress_set_fraction (self, 0.0);
     selection = et_application_window_browser_get_selection (self);
     selectcount = gtk_tree_selection_count_selected_rows (selection);
     progress_bar_index = 0;
@@ -897,8 +898,7 @@ on_remove_tags (GSimpleAction *action,
         ET_Manage_Changes_Of_File_Data (etfile, NULL, FileTag);
 
         fraction = (++progress_bar_index) / (double) selectcount;
-        gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (ProgressBar),
-                                       fraction);
+        et_application_window_progress_set_fraction (self, fraction);
         /* Needed to refresh status bar */
         while (gtk_events_pending ())
         {
@@ -915,7 +915,7 @@ on_remove_tags (GSimpleAction *action,
     ET_Display_File_Data_To_UI (ETCore->ETFileDisplayed);
     et_application_window_update_actions (self);
 
-    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (ProgressBar), 0.0);
+    et_application_window_progress_set_fraction (self, 0.0);
     Statusbar_Message (_("All tags have been removed"),TRUE);
 }
 
@@ -1746,8 +1746,8 @@ et_application_window_init (EtApplicationWindow *self)
     gtk_box_pack_start (GTK_BOX (hbox), widget, TRUE, TRUE, 0);
 
     /* Progress bar */
-    widget = Create_Progress_Bar ();
-    gtk_box_pack_end (GTK_BOX (hbox), widget, FALSE, FALSE, 0);
+    priv->progress_bar = et_progress_bar_new ();
+    gtk_box_pack_end (GTK_BOX (hbox), priv->progress_bar, FALSE, FALSE, 0);
 
     gtk_widget_show_all (GTK_WIDGET (main_vbox));
 }
@@ -1815,6 +1815,33 @@ et_application_window_scan_dialog_update_previews (EtApplicationWindow *self)
     }
 }
 
+void
+et_application_window_progress_set_fraction (EtApplicationWindow *self,
+                                             gdouble fraction)
+{
+    EtApplicationWindowPrivate *priv;
+
+    g_return_if_fail (ET_APPLICATION_WINDOW (self));
+
+    priv = et_application_window_get_instance_private (self);
+
+    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (priv->progress_bar),
+                                   fraction);
+}
+
+void
+et_application_window_progress_set_text (EtApplicationWindow *self,
+                                         const gchar *text)
+{
+    EtApplicationWindowPrivate *priv;
+
+    g_return_if_fail (ET_APPLICATION_WINDOW (self));
+
+    priv = et_application_window_get_instance_private (self);
+
+    gtk_progress_bar_set_text (GTK_PROGRESS_BAR (priv->progress_bar), text);
+}
+
 GtkWidget *
 et_application_window_get_log_area (EtApplicationWindow *self)
 {
diff --git a/src/application_window.h b/src/application_window.h
index 271fd58..157c378 100644
--- a/src/application_window.h
+++ b/src/application_window.h
@@ -88,6 +88,8 @@ void et_application_window_browser_refresh_sort (EtApplicationWindow *self);
 void et_application_window_hide_log_area (EtApplicationWindow *self);
 void et_application_window_show_log_area (EtApplicationWindow *self);
 void et_application_window_scan_dialog_update_previews (EtApplicationWindow *self);
+void et_application_window_progress_set_fraction (EtApplicationWindow *self, gdouble fraction);
+void et_application_window_progress_set_text (EtApplicationWindow *self, const gchar *text);
 
 G_END_DECLS
 
diff --git a/src/bar.c b/src/bar.c
index c94e79f..3857b9f 100644
--- a/src/bar.c
+++ b/src/bar.c
@@ -127,14 +127,3 @@ Statusbar_Message (const gchar *message, gboolean with_timer)
 
     g_free(msg_temp);
 }
-
-/*
- * Progress bar
- */
-GtkWidget *Create_Progress_Bar (void)
-{
-    ProgressBar = et_progress_bar_new ();
-
-    gtk_widget_show(ProgressBar);
-    return ProgressBar;
-}
diff --git a/src/bar.h b/src/bar.h
index 193926a..d766d0f 100644
--- a/src/bar.h
+++ b/src/bar.h
@@ -22,17 +22,11 @@
 #ifndef __BAR_H__
 #define __BAR_H__
 
-/***************
- * Declaration *
- ***************/
-GtkWidget      *ProgressBar;
-
 /**************
  * Prototypes *
  **************/
 
 GtkWidget *Create_Status_Bar   (void);
 void Statusbar_Message (const gchar *message, gboolean with_timer);
-GtkWidget *Create_Progress_Bar (void);
 
 #endif /* __BAR_H__ */
diff --git a/src/easytag.c b/src/easytag.c
index 6e3c833..13cdfbb 100644
--- a/src/easytag.c
+++ b/src/easytag.c
@@ -257,10 +257,10 @@ Save_List_Of_Files (GList *etfilelist, gboolean force_saving_files)
     }
 
     /* Initialize status bar */
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar),0);
+    et_application_window_progress_set_fraction (window, 0.0);
     progress_bar_index = 0;
     g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, nb_files_to_save);
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+    et_application_window_progress_set_text (window, progress_bar_text);
 
     /* Set to unsensitive all command buttons (except Quit button) */
     et_application_window_disable_command_actions (window);
@@ -332,15 +332,16 @@ Save_List_Of_Files (GList *etfilelist, gboolean force_saving_files)
             /* ET_Display_File_Data_To_UI ((ET_File *)l->data);
              * Use of 'currentPath' to try to increase speed. Indeed, in many
              * cases, the next file to select, is the next in the list. */
-            et_application_window_browser_select_file_by_et_file2 (ET_APPLICATION_WINDOW (MainWindow),
+            et_application_window_browser_select_file_by_et_file2 (window,
                                                                    (ET_File *)l->data,
                                                                    FALSE,
                                                                    currentPath);
 
             fraction = (++progress_bar_index) / (double) nb_files_to_save;
-            gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), fraction);
+            et_application_window_progress_set_fraction (window, fraction);
             g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, nb_files_to_save);
-            gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+            et_application_window_progress_set_text (window,
+                                                     progress_bar_text);
 
             /* Needed to refresh status bar */
             while (gtk_events_pending())
@@ -354,11 +355,11 @@ Save_List_Of_Files (GList *etfilelist, gboolean force_saving_files)
             if (saving_answer == -1)
             {
                 /* Stop saving files + reinit progress bar */
-                gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), "");
-                gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0.0);
+                et_application_window_progress_set_text (window, "");
+                et_application_window_progress_set_fraction (window, 0.0);
                 Statusbar_Message (_("Saving files was stopped"), TRUE);
                 /* To update state of command buttons */
-                et_application_window_update_actions (ET_APPLICATION_WINDOW (MainWindow));
+                et_application_window_update_actions (window);
                 et_application_window_browser_set_sensitive (window, TRUE);
                 et_application_window_tag_area_set_sensitive (window, TRUE);
                 et_application_window_file_area_set_sensitive (window, TRUE);
@@ -401,11 +402,11 @@ Save_List_Of_Files (GList *etfilelist, gboolean force_saving_files)
     /* Give again focus to the first entry, else the focus is passed to another */
     gtk_widget_grab_focus(GTK_WIDGET(widget_focused));
 
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), "");
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0);
+    et_application_window_progress_set_text (window, "");
+    et_application_window_progress_set_fraction (window, 0.0);
     Statusbar_Message(msg,TRUE);
     g_free(msg);
-    et_application_window_browser_refresh_list (ET_APPLICATION_WINDOW (MainWindow));
+    et_application_window_browser_refresh_list (window);
     return TRUE;
 }
 
@@ -949,9 +950,9 @@ gboolean Read_Directory (gchar *path_real)
 
     nbrfile = g_list_length(FileList);
 
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0.0);
+    et_application_window_progress_set_fraction (window, 0.0);
     g_snprintf(progress_bar_text, 30, "%d/%d", 0, nbrfile);
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+    et_application_window_progress_set_text (window, progress_bar_text);
 
     // Load the supported files (Extension recognized)
     for (l = FileList; l != NULL && !Main_Stop_Button_Pressed;
@@ -968,18 +969,18 @@ gboolean Read_Directory (gchar *path_real)
         // Warning: Do not free filename_real because ET_Add_File.. uses it for internal structures
         ET_Add_File_To_File_List(filename_real);
 
-        // Update the progress bar
+        /* Update the progress bar. */
         fraction = (++progress_bar_index) / (double) nbrfile;
-        gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), fraction);
+        et_application_window_progress_set_fraction (window, fraction);
         g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, nbrfile);
-        gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+        et_application_window_progress_set_text (window, progress_bar_text);
         while (gtk_events_pending())
             gtk_main_iteration();
     }
 
     /* Just free the list, not the data. */
     g_list_free (FileList);
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), "");
+    et_application_window_progress_set_text (window, "");
 
     /* Close window to quit recursion */
     Destroy_Quit_Recursion_Function_Window();
@@ -1037,11 +1038,11 @@ gboolean Read_Directory (gchar *path_real)
     }
 
     /* Update sensitivity of buttons and menus */
-    et_application_window_update_actions (ET_APPLICATION_WINDOW (MainWindow));
+    et_application_window_update_actions (window);
 
     et_application_window_browser_set_sensitive (window, TRUE);
 
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0.0);
+    et_application_window_progress_set_fraction (window, 0.0);
     Statusbar_Message(msg,FALSE);
     g_free(msg);
     Set_Unbusy_Cursor();
diff --git a/src/gtk2_compat.c b/src/gtk2_compat.c
index 530bd9d..7b65d94 100644
--- a/src/gtk2_compat.c
+++ b/src/gtk2_compat.c
@@ -1,5 +1,4 @@
-/*
- * EasyTAG - Tag editor for MP3 and Ogg Vorbis files
+/* EasyTAG - Tag editor for audio files
  * Copyright (C) 2012  David King <amigadave amigadave com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -45,16 +44,3 @@ void et_grid_attach_margins (GtkGrid *grid, GtkWidget *child, gint left,
     et_grid_attach_full (grid, child, left, top, width, height, FALSE, FALSE,
                          hmargin, vmargin);
 }
-
-GtkWidget *
-et_progress_bar_new (void)
-{
-    GtkWidget *progress;
-
-    progress = gtk_progress_bar_new ();
-
-    gtk_progress_bar_set_show_text (GTK_PROGRESS_BAR (progress), TRUE);
-    gtk_progress_bar_set_text (GTK_PROGRESS_BAR (progress), "");
-
-    return progress;
-}
diff --git a/src/gtk2_compat.h b/src/gtk2_compat.h
index dc70b5f..2093f92 100644
--- a/src/gtk2_compat.h
+++ b/src/gtk2_compat.h
@@ -33,8 +33,6 @@ void et_grid_attach_margins (GtkGrid *grid, GtkWidget *child, gint left,
                              gint top, gint width, gint height, gint hmargin,
                              gint vmargin);
 
-GtkWidget * et_progress_bar_new (void);
-
 G_END_DECLS
 
 #endif /* GTK2_COMPAT_H_ */
diff --git a/src/progress_bar.c b/src/progress_bar.c
new file mode 100644
index 0000000..afb2b45
--- /dev/null
+++ b/src/progress_bar.c
@@ -0,0 +1,31 @@
+/* EasyTAG - Tag editor for audio files
+ * Copyright (C) 2014  David King <amigadave amigadave com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "progress_bar.h"
+
+GtkWidget *
+et_progress_bar_new (void)
+{
+    GtkWidget *progress;
+
+    progress = gtk_progress_bar_new ();
+
+    gtk_progress_bar_set_show_text (GTK_PROGRESS_BAR (progress), TRUE);
+    gtk_progress_bar_set_text (GTK_PROGRESS_BAR (progress), "");
+
+    return progress;
+}
diff --git a/src/progress_bar.h b/src/progress_bar.h
new file mode 100644
index 0000000..1d9d63c
--- /dev/null
+++ b/src/progress_bar.h
@@ -0,0 +1,29 @@
+/* EasyTAG - Tag editor for audio files
+ * Copyright (C) 2014  David King <amigadave amigadave com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ET_PROGRESS_BAR_H_
+#define ET_PROGRESS_BAR_H_
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+GtkWidget * et_progress_bar_new (void);
+
+G_END_DECLS
+
+#endif /* ET_PROGRESS_BAR_H_ */
diff --git a/src/scan_dialog.c b/src/scan_dialog.c
index 519af7f..273943b 100644
--- a/src/scan_dialog.c
+++ b/src/scan_dialog.c
@@ -3409,6 +3409,7 @@ et_scan_dialog_scan_selected_files (EtScanDialog *self)
     GList *selfilelist = NULL;
     GList *l;
     ET_File *etfile;
+    EtApplicationWindow *window;
     GtkTreeSelection *selection;
 
     g_return_if_fail (ETCore->ETFileDisplayedList != NULL);
@@ -3417,15 +3418,16 @@ et_scan_dialog_scan_selected_files (EtScanDialog *self)
     ET_Save_File_Data_From_UI(ETCore->ETFileDisplayed);
 
     /* Initialize status bar */
-    selection = et_application_window_browser_get_selection (ET_APPLICATION_WINDOW (MainWindow));
+    window = ET_APPLICATION_WINDOW (MainWindow);
+    selection = et_application_window_browser_get_selection (window);
     selectcount = gtk_tree_selection_count_selected_rows (selection);
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar),0);
+    et_application_window_progress_set_fraction (window, 0.0);
     progress_bar_index = 0;
     g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, selectcount);
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+    et_application_window_progress_set_text (window, progress_bar_text);
 
     /* Set to unsensitive all command buttons (except Quit button) */
-    et_application_window_disable_command_actions (ET_APPLICATION_WINDOW (MainWindow));
+    et_application_window_disable_command_actions (window);
 
     progress_bar_index = 0;
 
@@ -3433,16 +3435,16 @@ et_scan_dialog_scan_selected_files (EtScanDialog *self)
 
     for (l = selfilelist; l != NULL; l = g_list_next (l))
     {
-        etfile = et_application_window_browser_get_et_file_from_path (ET_APPLICATION_WINDOW (MainWindow),
+        etfile = et_application_window_browser_get_et_file_from_path (window,
                                                                       l->data);
 
         /* Run the current scanner. */
         Scan_Select_Mode_And_Run_Scanner (self, etfile);
 
         fraction = (++progress_bar_index) / (double) selectcount;
-        gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), fraction);
+        et_application_window_progress_set_fraction (window, fraction);
         g_snprintf(progress_bar_text, 30, "%d/%d", progress_bar_index, selectcount);
-        gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), progress_bar_text);
+        et_application_window_progress_set_text (window, progress_bar_text);
 
         /* Needed to refresh status bar */
         while (gtk_events_pending())
@@ -3452,16 +3454,16 @@ et_scan_dialog_scan_selected_files (EtScanDialog *self)
     g_list_free_full (selfilelist, (GDestroyNotify)gtk_tree_path_free);
 
     /* Refresh the whole list (faster than file by file) to show changes. */
-    et_application_window_browser_refresh_list (ET_APPLICATION_WINDOW (MainWindow));
+    et_application_window_browser_refresh_list (window);
 
     /* Display the current file */
     ET_Display_File_Data_To_UI(ETCore->ETFileDisplayed);
 
     /* To update state of command buttons */
-    et_application_window_update_actions (ET_APPLICATION_WINDOW (MainWindow));
+    et_application_window_update_actions (window);
 
-    gtk_progress_bar_set_text(GTK_PROGRESS_BAR(ProgressBar), "");
-    gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(ProgressBar), 0);
+    et_application_window_progress_set_text (window, "");
+    et_application_window_progress_set_fraction (window, 0.0);
     Statusbar_Message(_("All tags have been scanned"),TRUE);
 }
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