[gnome-builder] greeter: use Directory filter by default

[Christian Hergert <chergert src gnome org>]

commit 4c95888edb67f31d225efbee84879b194d89a4a7
Author: Christian Hergert <chergert redhat com>
Date:   Sun Nov 26 20:41:18 2017 -0800

    greeter: use Directory filter by default
    
    Most people seem to be thinking about their projects in terms
    of a "project directory". Since we can auto-discover the build
    system within that directory, we no longer need to default to
    selecting project files. It was at odds with inode/directory
    content-type in file-chooser because that requires SELECT_FOLDER
    file chooser action.

 src/libide/directory/directory.plugin        |    1 +
 src/libide/greeter/ide-greeter-perspective.c |   19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 1 deletions(-)
---
diff --git a/src/libide/directory/directory.plugin b/src/libide/directory/directory.plugin
index ebf74f0..9fe1c48 100644
--- a/src/libide/directory/directory.plugin
+++ b/src/libide/directory/directory.plugin
@@ -9,4 +9,5 @@ Hidden=true
 X-Build-System-Priority=10000000
 X-Project-File-Filter-Name=Directory
 X-Project-File-Filter-Content-Type=inode/directory
+X-Project-File-Filter-Priority=-100
 Embedded=ide_directory_register_types
diff --git a/src/libide/greeter/ide-greeter-perspective.c b/src/libide/greeter/ide-greeter-perspective.c
index ba7d24c..c47f328 100644
--- a/src/libide/greeter/ide-greeter-perspective.c
+++ b/src/libide/greeter/ide-greeter-perspective.c
@@ -297,6 +297,7 @@ ide_greeter_perspective_open_clicked (IdeGreeterPerspective *self,
   PeasEngine *engine;
   const GList *list;
   GtkFileFilter *all_filter;
+  gint64 last_priority = G_MAXINT64;
 
   g_assert (IDE_IS_GREETER_PERSPECTIVE (self));
   g_assert (GTK_IS_BUTTON (open_button));
@@ -338,6 +339,7 @@ ide_greeter_perspective_open_clicked (IdeGreeterPerspective *self,
       const gchar *pattern;
       const gchar *content_type;
       const gchar *name;
+      const gchar *priority;
       gchar **patterns;
       gchar **content_types;
       gint i;
@@ -351,6 +353,7 @@ ide_greeter_perspective_open_clicked (IdeGreeterPerspective *self,
 
       pattern = peas_plugin_info_get_external_data (plugin_info, "X-Project-File-Filter-Pattern");
       content_type = peas_plugin_info_get_external_data (plugin_info, "X-Project-File-Filter-Content-Type");
+      priority = peas_plugin_info_get_external_data (plugin_info, "X-Project-File-Filter-Priority");
 
       if (pattern == NULL && content_type == NULL)
         continue;
@@ -389,6 +392,18 @@ ide_greeter_perspective_open_clicked (IdeGreeterPerspective *self,
 
       gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
 
+      /* Look at the priority to set the default file filter. */
+      if (priority != NULL)
+        {
+          gint64 pval = g_ascii_strtoll (priority, NULL, 10);
+
+          if (pval < last_priority)
+            {
+              gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (dialog), filter);
+              last_priority = pval;
+            }
+        }
+
       g_strfreev (patterns);
       g_strfreev (content_types);
     }
@@ -399,7 +414,9 @@ ide_greeter_perspective_open_clicked (IdeGreeterPerspective *self,
                            self,
                            G_CONNECT_SWAPPED);
 
-  gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (dialog), all_filter);
+  /* If unset, set the default filter */
+  if (last_priority == G_MAXINT64)
+    gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (dialog), all_filter);
 
   settings = g_settings_new ("org.gnome.builder");
   projects_dir = g_settings_get_string (settings, "projects-directory");