[gnome-builder/wip/gtk4-port: 416/736] plugins/editorui: bring back --editor option

[Christian Hergert <chergert src gnome org>]

commit 127b2fe159d807366c3cbb23792b9fa859164b58
Author: Christian Hergert <chergert redhat com>
Date:   Tue Apr 5 17:32:02 2022 -0700

    plugins/editorui: bring back --editor option
    
    There is still some work to be done to get this to actually open files
    as that isn't working correctly yet.

 src/plugins/editorui/editorui-plugin.c             |   4 +
 .../editorui/gbp-editorui-application-addin.c      | 395 +++++++++++++++++++++
 .../editorui/gbp-editorui-application-addin.h      |  31 ++
 src/plugins/editorui/meson.build                   |   1 +
 4 files changed, 431 insertions(+)
---
diff --git a/src/plugins/editorui/editorui-plugin.c b/src/plugins/editorui/editorui-plugin.c
index 0679d36f1..b8edfbcd2 100644
--- a/src/plugins/editorui/editorui-plugin.c
+++ b/src/plugins/editorui/editorui-plugin.c
@@ -26,6 +26,7 @@
 
 #include <libide-gui.h>
 
+#include "gbp-editorui-application-addin.h"
 #include "gbp-editorui-preferences-addin.h"
 #include "gbp-editorui-workbench-addin.h"
 #include "gbp-editorui-workspace-addin.h"
@@ -36,6 +37,9 @@ _gbp_editorui_register_types (PeasObjectModule *module)
 {
   g_resources_register (gbp_editorui_get_resource ());
 
+  peas_object_module_register_extension_type (module,
+                                              IDE_TYPE_APPLICATION_ADDIN,
+                                              GBP_TYPE_EDITORUI_APPLICATION_ADDIN);
   peas_object_module_register_extension_type (module,
                                               IDE_TYPE_PREFERENCES_ADDIN,
                                               GBP_TYPE_EDITORUI_PREFERENCES_ADDIN);
diff --git a/src/plugins/editorui/gbp-editorui-application-addin.c 
b/src/plugins/editorui/gbp-editorui-application-addin.c
new file mode 100644
index 000000000..e42dde3de
--- /dev/null
+++ b/src/plugins/editorui/gbp-editorui-application-addin.c
@@ -0,0 +1,395 @@
+/* gbp-editorui-application-addin.c
+ *
+ * Copyright 2018-2019 Christian Hergert <chergert redhat 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 3 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#define G_LOG_DOMAIN "gbp-editorui-application-addin"
+
+#include "config.h"
+
+#include <glib/gi18n.h>
+#include <stdlib.h>
+
+#include <libide-editor.h>
+#include <libide-gui.h>
+
+#include "gbp-editorui-application-addin.h"
+
+struct _GbpEditoruiApplicationAddin
+{
+  GObject parent_instance;
+};
+
+static void
+find_workbench_for_dir_cb (IdeWorkbench *workbench,
+                           gpointer      user_data)
+{
+  g_autoptr(GFile) workdir = NULL;
+  IdeContext *context;
+  struct {
+    GFile        *workdir;
+    IdeWorkbench *workbench;
+  } *lookup = user_data;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_WORKBENCH (workbench));
+  g_assert (lookup != NULL);
+
+  if (lookup->workbench != NULL)
+    return;
+
+  context = ide_workbench_get_context (workbench);
+  workdir = ide_context_ref_workdir (context);
+
+  if (g_file_has_prefix (lookup->workdir, workdir) ||
+      g_file_equal (lookup->workdir, workdir))
+    lookup->workbench = workbench;
+}
+
+static IdeWorkbench *
+find_workbench_for_dir (IdeApplication *app,
+                        GFile          *workdir)
+{
+  struct {
+    GFile        *workdir;
+    IdeWorkbench *workbench;
+  } lookup = { workdir, NULL };
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_APPLICATION (app));
+  g_assert (G_IS_FILE (workdir));
+
+  ide_application_foreach_workbench (app,
+                                     (GFunc)find_workbench_for_dir_cb,
+                                     &lookup);
+
+  return lookup.workbench ? g_object_ref (lookup.workbench) : NULL;
+}
+
+static GFile *
+get_common_ancestor (GPtrArray *files)
+{
+  GFile *ancestor;
+
+  if (files->len == 0)
+    return NULL;
+
+  ancestor = g_file_get_parent (g_ptr_array_index (files, 0));
+
+  for (guint i = 1; i < files->len; i++)
+    {
+      GFile *file = g_ptr_array_index (files, i);
+
+      while (!g_file_has_prefix (file, ancestor))
+        {
+          GFile *old = ancestor;
+          ancestor = g_file_get_parent (old);
+          if (g_file_equal (ancestor, old))
+            break;
+          g_object_unref (old);
+        }
+    }
+
+  return g_steal_pointer (&ancestor);
+}
+
+static GFile *
+get_common_ancestor_array (GFile **files,
+                           gint    n_files)
+{
+  g_autoptr (GPtrArray) fileptrs = g_ptr_array_sized_new (n_files);
+
+  g_assert (files != NULL || n_files == 0);
+
+  for (guint i = 0; i < n_files; i++)
+    g_ptr_array_add (fileptrs, files[i]);
+
+  return get_common_ancestor (fileptrs);
+}
+
+static void
+gbp_editorui_application_addin_add_option_entries (IdeApplicationAddin *addin,
+                                                 IdeApplication      *app)
+{
+  g_assert (IDE_IS_APPLICATION_ADDIN (addin));
+  g_assert (G_IS_APPLICATION (app));
+
+  g_application_add_main_option (G_APPLICATION (app),
+                                 "editor",
+                                 'e',
+                                 G_OPTION_FLAG_IN_MAIN,
+                                 G_OPTION_ARG_NONE,
+                                 _("Use minimal editorui interface"),
+                                 NULL);
+}
+
+static void
+gbp_editorui_application_addin_open_all_cb (GObject      *object,
+                                          GAsyncResult *result,
+                                          gpointer      user_data)
+{
+  IdeWorkbench *workbench = (IdeWorkbench *) object;
+  g_autoptr(GApplicationCommandLine) cmdline = user_data;
+  g_autoptr(GError) error = NULL;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_WORKBENCH (workbench));
+  g_assert (G_IS_ASYNC_RESULT (result));
+  g_assert (!cmdline || G_IS_APPLICATION_COMMAND_LINE (cmdline));
+
+  if (!ide_workbench_open_finish (workbench, result, &error))
+    {
+      if (error != NULL && cmdline != NULL)
+        g_application_command_line_printerr (cmdline, "%s\n", error->message);
+    }
+
+  if (cmdline != NULL)
+    g_application_command_line_set_exit_status (cmdline, error == NULL ? EXIT_SUCCESS : EXIT_FAILURE);
+}
+
+static void
+gbp_editorui_application_addin_handle_command_line (IdeApplicationAddin     *addin,
+                                                  IdeApplication          *application,
+                                                  GApplicationCommandLine *cmdline)
+{
+  g_autoptr(IdeWorkbench) workbench = NULL;
+  IdeApplication *app = (IdeApplication *)application;
+  g_autoptr(GPtrArray) files = NULL;
+  g_autoptr(GFile) workdir = NULL;
+  g_auto(GStrv) argv = NULL;
+  GVariantDict *options;
+  gint argc;
+
+  g_assert (IDE_IS_APPLICATION_ADDIN (addin));
+  g_assert (IDE_IS_APPLICATION (app));
+  g_assert (G_IS_APPLICATION_COMMAND_LINE (cmdline));
+
+  argv = g_application_command_line_get_arguments (cmdline, &argc);
+
+  if ((options = g_application_command_line_get_options_dict (cmdline)) &&
+      g_variant_dict_contains (options, "editor"))
+    {
+      ide_application_set_workspace_type (application, IDE_TYPE_EDITOR_WORKSPACE);
+
+      /* Just open the editor workspace if no files were specified */
+      if (argc < 2)
+        {
+          IdeEditorWorkspace *workspace;
+          IdeContext *context;
+
+          workdir = g_application_command_line_create_file_for_arg (cmdline, ".");
+          ide_application_set_command_line_handled (application, cmdline, TRUE);
+
+          workbench = ide_workbench_new ();
+          ide_application_add_workbench (app, workbench);
+
+          context = ide_workbench_get_context (workbench);
+          ide_context_set_workdir (context, workdir);
+
+          workspace = ide_editor_workspace_new (application);
+          ide_workbench_add_workspace (workbench, IDE_WORKSPACE (workspace));
+
+          ide_workbench_focus_workspace (workbench, IDE_WORKSPACE (workspace));
+
+          return;
+        }
+    }
+
+  if (argc < 2)
+    return;
+
+  /*
+   * If the user is trying to open various files using the command line with
+   * something like "gnome-builder x.c y.c z.c" then instead of opening the
+   * full project system, we'll open a simplified editor workspace for just
+   * these files and avoid loading a project altogether. That means that they
+   * wont get all of the IDE experience, but its faster to get quick editing
+   * done and then exit.
+   */
+
+  files = g_ptr_array_new_with_free_func (g_object_unref);
+  for (guint i = 1; i < argc; i++)
+    g_ptr_array_add (files,
+                     g_application_command_line_create_file_for_arg (cmdline, argv[i]));
+
+  /* If we find an existing workbench that is an ancestor, or equal to the
+   * common ancestor, then we'll re-use it instead of creating a new one.
+   */
+  workdir = get_common_ancestor (files);
+  if (!(workbench = find_workbench_for_dir (application, workdir)))
+    {
+      IdeEditorWorkspace *workspace;
+      IdeContext *context;
+
+      workbench = ide_workbench_new ();
+      ide_application_add_workbench (app, workbench);
+
+      context = ide_workbench_get_context (workbench);
+
+      /* Setup the working directory to top-most common ancestor of the
+       * files. That way we can still get somewhat localized search results
+       * and other workspace features.
+       */
+      if (workdir != NULL)
+        ide_context_set_workdir (context, workdir);
+
+      workspace = ide_editor_workspace_new (app);
+      ide_workbench_add_workspace (workbench, IDE_WORKSPACE (workspace));
+
+      ide_workbench_focus_workspace (workbench, IDE_WORKSPACE (workspace));
+    }
+
+  g_assert (files->len > 0);
+
+  ide_workbench_open_all_async (workbench,
+                                (GFile **)(gpointer)files->pdata,
+                                files->len,
+                                "editor",
+                                NULL,
+                                gbp_editorui_application_addin_open_all_cb,
+                                g_object_ref (cmdline));
+}
+
+static void
+gbp_editorui_application_addin_open (IdeApplicationAddin  *addin,
+                                     IdeApplication       *application,
+                                     GFile               **files,
+                                     gint                  n_files,
+                                     const gchar          *hint)
+{
+  g_autoptr(IdeWorkbench) workbench = NULL;
+  g_autoptr(GFile) workdir = NULL;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_APPLICATION (application));
+  g_assert (files != NULL);
+  g_assert (n_files > 0);
+
+  workdir = get_common_ancestor_array (files, n_files);
+
+  if (!(workbench = find_workbench_for_dir (application, workdir)))
+    {
+      IdeEditorWorkspace *workspace;
+      IdeContext *context;
+
+      workbench = ide_workbench_new ();
+      ide_application_add_workbench (application, workbench);
+
+      context = ide_workbench_get_context (workbench);
+
+      /* Setup the working directory to top-most common ancestor of the
+       * files. That way we can still get somewhat localized search results
+       * and other workspace features.
+       */
+      if (workdir != NULL)
+        ide_context_set_workdir (context, workdir);
+
+      workspace = ide_editor_workspace_new (application);
+      ide_workbench_add_workspace (workbench, IDE_WORKSPACE (workspace));
+
+      ide_workbench_focus_workspace (workbench, IDE_WORKSPACE (workspace));
+    }
+
+  ide_workbench_open_all_async (workbench,
+                                files,
+                                n_files,
+                                "editor",
+                                NULL,
+                                gbp_editorui_application_addin_open_all_cb,
+                                NULL);
+
+}
+
+static void
+new_editor_workspace_action (GSimpleAction *action,
+                             GVariant      *param,
+                             gpointer       user_data)
+{
+  g_autoptr(IdeWorkbench) workbench = NULL;
+  g_autoptr(GFile) workdir = NULL;
+  IdeEditorWorkspace *workspace;
+  IdeContext *context;
+
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (GBP_IS_EDITORUI_APPLICATION_ADDIN (user_data));
+
+  workbench = ide_workbench_new ();
+  ide_application_add_workbench (IDE_APPLICATION_DEFAULT, workbench);
+
+  context = ide_workbench_get_context (workbench);
+  workdir = g_file_new_for_path (ide_get_projects_dir ());
+  ide_context_set_workdir (context, workdir);
+
+  workspace = ide_editor_workspace_new (IDE_APPLICATION_DEFAULT);
+  ide_workbench_add_workspace (workbench, IDE_WORKSPACE (workspace));
+
+  ide_workbench_focus_workspace (workbench, IDE_WORKSPACE (workspace));
+}
+
+static GActionEntry actions[] = {
+  { "new-editor-workspace", new_editor_workspace_action },
+};
+
+static void
+gbp_editorui_application_addin_load (IdeApplicationAddin *addin,
+                                     IdeApplication      *application)
+{
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_APPLICATION_ADDIN (addin));
+  g_assert (IDE_IS_APPLICATION (application));
+
+  g_action_map_add_action_entries (G_ACTION_MAP (application),
+                                   actions,
+                                   G_N_ELEMENTS (actions),
+                                   addin);
+}
+
+static void
+gbp_editorui_application_addin_unload (IdeApplicationAddin *addin,
+                                       IdeApplication      *application)
+{
+  g_assert (IDE_IS_MAIN_THREAD ());
+  g_assert (IDE_IS_APPLICATION_ADDIN (addin));
+  g_assert (IDE_IS_APPLICATION (application));
+
+  for (guint i = 0; i < G_N_ELEMENTS (actions); i++)
+    g_action_map_remove_action (G_ACTION_MAP (application), actions[i].name);
+}
+
+static void
+cmdline_addin_iface_init (IdeApplicationAddinInterface *iface)
+{
+  iface->add_option_entries = gbp_editorui_application_addin_add_option_entries;
+  iface->handle_command_line = gbp_editorui_application_addin_handle_command_line;
+  iface->open = gbp_editorui_application_addin_open;
+  iface->load = gbp_editorui_application_addin_load;
+  iface->unload = gbp_editorui_application_addin_unload;
+}
+
+G_DEFINE_FINAL_TYPE_WITH_CODE (GbpEditoruiApplicationAddin, gbp_editorui_application_addin, G_TYPE_OBJECT,
+                               G_IMPLEMENT_INTERFACE (IDE_TYPE_APPLICATION_ADDIN, cmdline_addin_iface_init))
+
+static void
+gbp_editorui_application_addin_class_init (GbpEditoruiApplicationAddinClass *klass)
+{
+}
+
+static void
+gbp_editorui_application_addin_init (GbpEditoruiApplicationAddin *self)
+{
+}
diff --git a/src/plugins/editorui/gbp-editorui-application-addin.h 
b/src/plugins/editorui/gbp-editorui-application-addin.h
new file mode 100644
index 000000000..bbd71f5ab
--- /dev/null
+++ b/src/plugins/editorui/gbp-editorui-application-addin.h
@@ -0,0 +1,31 @@
+/* gbp-editorui-application-addin.h
+ *
+ * Copyright 2018-2022 Christian Hergert <chergert redhat 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 3 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/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <libide-core.h>
+
+G_BEGIN_DECLS
+
+#define GBP_TYPE_EDITORUI_APPLICATION_ADDIN (gbp_editorui_application_addin_get_type())
+
+G_DECLARE_FINAL_TYPE (GbpEditoruiApplicationAddin, gbp_editorui_application_addin, GBP, 
EDITORUI_APPLICATION_ADDIN, GObject)
+
+G_END_DECLS
diff --git a/src/plugins/editorui/meson.build b/src/plugins/editorui/meson.build
index e1698fb0e..94ce0eee2 100644
--- a/src/plugins/editorui/meson.build
+++ b/src/plugins/editorui/meson.build
@@ -1,5 +1,6 @@
 plugins_sources += files([
   'editorui-plugin.c',
+  'gbp-editorui-application-addin.c',
   'gbp-editorui-position-label.c',
   'gbp-editorui-preferences-addin.c',
   'gbp-editorui-preview.c',