[gnome-builder/wip/gtk4-port: 225/343] libide/greeter: use signal to alter open-project handling

[Christian Hergert <chergert src gnome org>]

commit 94ae7010a16261cb5dc025368f5b864a693aa152
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 30 23:52:10 2022 -0700

    libide/greeter: use signal to alter open-project handling
    
    We will need a way for the vcsui to tweak the values of this as well,
    so we can use it internally as well. The signal will block when one of
    the handlers returns TRUE (to indicate to stop opening).

 src/libide/greeter/ide-greeter-workspace.c | 102 +++++++++++++++++++++++------
 1 file changed, 81 insertions(+), 21 deletions(-)
---
diff --git a/src/libide/greeter/ide-greeter-workspace.c b/src/libide/greeter/ide-greeter-workspace.c
index 70642dc6f..b45dbe54b 100644
--- a/src/libide/greeter/ide-greeter-workspace.c
+++ b/src/libide/greeter/ide-greeter-workspace.c
@@ -77,7 +77,13 @@ enum {
   N_PROPS
 };
 
+enum {
+  OPEN_PROJECT,
+  N_SIGNALS
+};
+
 static GParamSpec *properties [N_PROPS];
+static guint signals [N_SIGNALS];
 
 #define GET_PRIORITY(w)   GPOINTER_TO_INT(g_object_get_data(G_OBJECT(w),"PRIORITY"))
 #define SET_PRIORITY(w,i) g_object_set_data(G_OBJECT(w),"PRIORITY",GINT_TO_POINTER(i))
@@ -368,31 +374,43 @@ ide_greeter_workspace_open_project_cb (GObject      *object,
   IDE_EXIT;
 }
 
-/**
- * ide_greeter_workspace_open_project:
- * @self: an #IdeGreeterWorkspace
- * @project_info: an #IdeProjectInfo
- *
- * Opens the project described by @project_info.
- *
- * This is useful by greeter workspace extensions that add new pages
- * which may not have other means to activate a project.
- */
-void
-ide_greeter_workspace_open_project (IdeGreeterWorkspace *self,
-                                    IdeProjectInfo      *project_info)
+static gboolean
+ide_greeter_workspace_real_open_project (IdeGreeterWorkspace *self,
+                                         IdeProjectInfo      *project_info)
 {
-#if 0
-  IdeWorkbench *workbench;
   const gchar *vcs_uri = NULL;
-  GFile *file;
 
   IDE_ENTRY;
 
-  g_return_if_fail (IDE_IS_GREETER_WORKSPACE (self));
-  g_return_if_fail (IDE_IS_PROJECT_INFO (project_info));
+  g_assert (IDE_IS_GREETER_WORKSPACE (self));
+  g_assert (IDE_IS_PROJECT_INFO (project_info));
+
+  /* If there is a VCS Uri and no project file/directory, then we might
+   * be able to guess the directory based on the clone vcs uri directory
+   * name. Use that to see if we can skip cloning again.
+   */
+  if (!ide_project_info_get_file (project_info) &&
+      !ide_project_info_get_directory (project_info) &&
+      (vcs_uri = ide_project_info_get_vcs_uri (project_info)))
+    {
+      g_autoptr(IdeVcsUri) uri = ide_vcs_uri_new (vcs_uri);
+      g_autofree gchar *suggested = NULL;
+      g_autofree gchar *checkout = NULL;
+
+      if (uri != NULL &&
+          (suggested = ide_vcs_uri_get_clone_name (uri)) &&
+          (checkout = g_build_filename (ide_get_projects_dir (), suggested, NULL)) &&
+          g_file_test (checkout, G_FILE_TEST_IS_DIR))
+        {
+          g_autoptr(GFile) directory = g_file_new_for_path (checkout);
+          ide_project_info_set_directory (project_info, directory);
+        }
+    }
 
-  /* If there is a VCS Uri and no project file/directory, then we want
+  return FALSE;
+
+#if 0
+  /*
    * to switch to the clone dialog. However, we can use the VCS Uri to
    * determine what the check-out directory would be, and if so, we can
    * just open that directory.
@@ -420,13 +438,46 @@ ide_greeter_workspace_open_project (IdeGreeterWorkspace *self,
           return;
         }
     }
+#endif
 
-  workbench = ide_widget_get_workbench (GTK_WIDGET (self));
+  IDE_RETURN (FALSE);
+}
+
+/**
+ * ide_greeter_workspace_open_project:
+ * @self: an #IdeGreeterWorkspace
+ * @project_info: an #IdeProjectInfo
+ *
+ * Opens the project described by @project_info.
+ *
+ * This is useful by greeter workspace extensions that add new pages
+ * which may not have other means to activate a project.
+ */
+void
+ide_greeter_workspace_open_project (IdeGreeterWorkspace *self,
+                                    IdeProjectInfo      *project_info)
+{
+  IdeWorkbench *workbench;
+  gboolean ret = FALSE;
+
+  IDE_ENTRY;
+
+  g_return_if_fail (IDE_IS_GREETER_WORKSPACE (self));
+  g_return_if_fail (IDE_IS_PROJECT_INFO (project_info));
+
+  g_signal_emit (self, signals [OPEN_PROJECT], 0, project_info, &ret);
+
+  if (ret)
+    IDE_GOTO (not_ready);
+
+  workbench = ide_workspace_get_workbench (IDE_WORKSPACE (self));
 
   ide_greeter_workspace_begin (self);
 
   if (ide_project_info_get_directory (project_info) == NULL)
     {
+      GFile *file;
+
       if ((file = ide_project_info_get_file (project_info)))
         {
           g_autoptr(GFile) parent = g_file_get_parent (file);
@@ -446,8 +497,8 @@ ide_greeter_workspace_open_project (IdeGreeterWorkspace *self,
                                     ide_greeter_workspace_open_project_cb,
                                     g_object_ref (self));
 
+not_ready:
   IDE_EXIT;
-#endif
 }
 
 static void
@@ -642,6 +693,15 @@ ide_greeter_workspace_class_init (IdeGreeterWorkspaceClass *klass)
 
   g_object_class_install_properties (object_class, N_PROPS, properties);
 
+  signals [OPEN_PROJECT] =
+    g_signal_new_class_handler ("open-project",
+                                G_TYPE_FROM_CLASS (klass),
+                                G_SIGNAL_RUN_LAST,
+                                G_CALLBACK (ide_greeter_workspace_real_open_project),
+                                g_signal_accumulator_true_handled, NULL,
+                                NULL,
+                                G_TYPE_BOOLEAN, 1, IDE_TYPE_PROJECT_INFO);
+
   ide_workspace_class_set_kind (workspace_class, "greeter");
 
   gtk_widget_class_set_template_from_resource (widget_class, 
"/org/gnome/libide-greeter/ide-greeter-workspace.ui");