[taler-anastasis-gtk] branch master updated: skeleton for popup menu

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grothoff pushed a commit to branch master
in repository anastasis-gtk.

The following commit(s) were added to refs/heads/master by this push:
     new 5af3179  skeleton for popup menu
5af3179 is described below

commit 5af31791b94bbd8752a01b588eba24a5c80d740d
Author: Christian Grothoff <christian@grothoff.org>
AuthorDate: Tue Jun 29 08:05:13 2021 +0200

    skeleton for popup menu
---
 src/anastasis/anastasis-gtk_handle-policy-meta.c | 170 +++++++++++++++++++++++
 1 file changed, 170 insertions(+)

diff --git a/src/anastasis/anastasis-gtk_handle-policy-meta.c 
b/src/anastasis/anastasis-gtk_handle-policy-meta.c
new file mode 100644
index 0000000..3b41ea4
--- /dev/null
+++ b/src/anastasis/anastasis-gtk_handle-policy-meta.c
@@ -0,0 +1,170 @@
+/*
+     This file is part of anastasis-gtk.
+     Copyright (C) 2021 Anastasis SARL
+
+     Anastasis 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, or (at your
+     option) any later version.
+
+     Anastasis 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 Anastasis; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+     Boston, MA 02110-1301, USA.
+*/
+
+/**
+ * @file src/anastasis/anastasis-gtk_handle-policy-meta.c
+ * @brief Handle right-click context menu in policy review
+ * @author Christian Grothoff
+ */
+#include <gnunet/platform.h>
+#include <gnunet/gnunet_util_lib.h>
+#include "anastasis-gtk_action.h"
+#include "anastasis-gtk_helper.h"
+#include <jansson.h>
+
+
+/**
+ * An item was selected from the context menu; destroy the menu shell.
+ *
+ * @param menushell menu to destroy
+ * @param user_data the 'XXX' of the menu
+ */
+static void
+context_popup_selection_done (GtkMenuShell *menushell,
+                              gpointer user_data)
+{
+  void *ctx = user_data;
+
+  gtk_widget_destroy (GTK_WIDGET (menushell));
+  gtk_tree_row_reference_free (ctx->rr);
+  GNUNET_free (ctx);
+}
+
+
+/**
+ * Context menu was requested for the policy.  Compute which menu
+ * items are applicable and display an appropriate menu.
+ *
+ * @param tm tree model underlying the tree view where the event happened
+ * @param iter location in the tree model selected at the time
+ * @return NULL if no menu could be created,
+ *         otherwise the a pop-up menu
+ */
+static GtkMenu *
+get_popup (GtkTreeModel *tm,
+           GtkTreeIter *iter)
+{
+  GtkMenu *menu;
+  GtkWidget *child;
+  GtkTreePath *path;
+  void *ctx = NULL;
+
+  path = gtk_tree_model_get_path (tm,
+                                  iter);
+  ctx->rr = gtk_tree_row_reference_new (tm,
+                                        path);
+  gtk_tree_path_free (path);
+  gtk_tree_model_get (tm,
+                      iter,
+                      FIXME,
+                      &FIXME,
+                      -1);
+  menu = GTK_MENU (gtk_menu_new ());
+  {
+    /* only display download menus if there is a URI */
+    child = gtk_menu_item_new_with_label (_ ("_Delete"));
+    g_signal_connect (child,
+                      "activate",
+                      G_CALLBACK (delete_ctx_menu),
+                      ctx);
+    gtk_label_set_use_underline (GTK_LABEL (
+                                            gtk_bin_get_child (GTK_BIN 
(child))),
+                                 TRUE);
+    gtk_widget_show (child);
+    gtk_menu_shell_append (GTK_MENU_SHELL (menu), child);
+  }
+
+  {
+  /* Insert a separator */
+  child = gtk_separator_menu_item_new ();
+  gtk_widget_show (child);
+  gtk_menu_shell_append (GTK_MENU_SHELL (menu), child);
+  }
+
+  /* check for embedded URIs */
+  {
+    child = gtk_menu_item_new_with_label (_ ("_Edit policy"));
+    g_signal_connect (child,
+                      "activate",
+                      G_CALLBACK (edit_ctx_menu),
+                      ctx);
+    gtk_label_set_use_underline (GTK_LABEL (
+                                   gtk_bin_get_child (GTK_BIN (child))),
+                                 TRUE);
+    gtk_widget_show (child);
+    gtk_menu_shell_append (GTK_MENU_SHELL (menu),
+                           child);
+  }
+  g_signal_connect (menu,
+                    "selection-done",
+                    G_CALLBACK (context_popup_selection_done),
+                    spc);
+  return menu;
+}
+
+
+/**
+ * We got a button-click on the policy treeview.  If it was a
+ * right-click, display the context menu.
+ *
+ * @param widget the GtkTreeView with the search result list
+ * @param event the event, we only care about button events
+ * @param user_data NULL
+ * @return FALSE to propagate the event further,
+ *         TRUE to stop the propagation
+ */
+gboolean
+anastasis_gtk_policy_treeview_button_press_event (GtkWidget *widget,
+                                                  GdkEvent *event,
+                                                  gpointer user_data)
+{
+  GtkTreeView *tv = GTK_TREE_VIEW (widget);
+  GdkEventButton *event_button = (GdkEventButton *) event;
+  GtkTreeModel *tm;
+  GtkTreePath *path;
+  GtkTreeIter iter;
+  GtkMenu *menu;
+
+  if ((GDK_BUTTON_PRESS != event->type) ||
+      (3 != event_button->button))
+    return FALSE; /* not a right-click */
+  if (! gtk_tree_view_get_path_at_pos (tv,
+                                       event_button->x,
+                                       event_button->y,
+                                       &path,
+                                       NULL,
+                                       NULL,
+                                       NULL))
+    return FALSE; /* click outside of area with values, ignore */
+  tm = gtk_tree_view_get_model (tv);
+  if (! gtk_tree_model_get_iter (tm,
+                                 &iter,
+                                 path))
+    return FALSE; /* not sure how we got a path but no iter... */
+  gtk_tree_path_free (path);
+
+  menu = get_popup (tm,
+                    &iter);
+  if (NULL == menu)
+    return FALSE;
+  gtk_menu_popup_at_pointer (menu,
+                             event);
+  return FALSE;
+}

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