Introduce CallsAccountOverview: A UI to allow managing VoIP accounts

CallsAccountOverview allows user to view, add and edit VoIP accounts
(currently SIP only).

Each CallsAccount is represented by a CallsAccountRow.

account-row: Staying alive

src/calls-account-overview.c

@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2021 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls 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.
+ *
+ * Calls 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 Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#define G_LOG_DOMAIN "CallsAccountOverview"
+
+#include "calls-account.h"
+#include "calls-account-overview.h"
+#include "calls-account-row.h"
+#include "calls-account-provider.h"
+
+
+/**
+ * Section:calls-account-overview
+ * short_description: A #HdyWindow to manage VoIP accounts
+ * @Title: CallsAccountOverview
+ *
+ * This is a #HdyWindow derived window to display and manage the
+ * VoIP accounts. Each available #CallsAccount from any #CallsAccountProvider
+ * will be listed as a #CallsAccountRow.
+ */
+
+typedef enum {
+  SHOW_INTRO = 0,
+  SHOW_OVERVIEW,
+} CallsAccountOverviewState;
+
+
+struct _CallsAccountOverview {
+  HdyWindow                  parent;
+
+  /* UI widgets */
+  GtkStack                  *stack;
+  GtkWidget                 *intro;
+  GtkWidget                 *overview;
+  GtkWidget                 *add_btn;
+  GtkWidget                 *add_row;
+
+  /* The window where we add the account providers widget */
+  GtkWindow                 *account_window;
+  GtkWidget                 *current_account_widget;
+
+  /* misc */
+  CallsAccountOverviewState  state;
+  GList                     *providers;
+};
+
+G_DEFINE_TYPE (CallsAccountOverview, calls_account_overview, HDY_TYPE_WINDOW)
+
+
+static void
+update_visibility (CallsAccountOverview *self)
+{
+  g_assert (CALLS_IS_ACCOUNT_OVERVIEW (self));
+
+  switch (self->state) {
+  case SHOW_INTRO:
+    gtk_stack_set_visible_child (self->stack, self->intro);
+    break;
+
+  case SHOW_OVERVIEW:
+    gtk_stack_set_visible_child (self->stack, self->overview);
+    break;
+
+  default:
+    g_warn_if_reached ();
+  }
+}
+
+
+static void
+update_state (CallsAccountOverview *self)
+{
+  guint n_origins = 0;
+
+  g_assert (CALLS_IS_ACCOUNT_OVERVIEW (self));
+
+  for (GList *node = self->providers; node != NULL; node = node->next) {
+    CallsProvider *provider = CALLS_PROVIDER (node->data);
+    GListModel *model = calls_provider_get_origins (provider);
+
+    n_origins += g_list_model_get_n_items (model);
+  }
+
+  if (n_origins > 0)
+    self->state = SHOW_OVERVIEW;
+  else
+    self->state = SHOW_INTRO;
+
+  update_visibility (self);
+}
+
+
+static void
+attach_account_widget (CallsAccountOverview *self,
+                       GtkWidget            *widget)
+{
+  g_assert (CALLS_IS_ACCOUNT_OVERVIEW (self));
+  g_assert (!widget || GTK_IS_WIDGET (widget));
+
+  if (widget == self->current_account_widget)
+    return;
+
+  if (self->current_account_widget)
+    gtk_container_remove (GTK_CONTAINER (self->account_window),
+                          self->current_account_widget);
+
+  self->current_account_widget = widget;
+  if (widget)
+    gtk_container_add (GTK_CONTAINER (self->account_window), widget);
+}
+
+
+static void
+on_add_account_clicked (CallsAccountOverview *self)
+{
+  CallsAccountProvider *provider;
+  GtkWidget *widget;
+
+  /* For now we only have a single AccountProvider */
+  provider = CALLS_ACCOUNT_PROVIDER (self->providers->data);
+
+  widget = calls_account_provider_get_account_widget (provider);
+  attach_account_widget (self, widget);
+
+  calls_account_provider_add_new_account (provider);
+
+  gtk_window_present (self->account_window);
+}
+
+
+static void
+calls_account_overview_class_init (CallsAccountOverviewClass *klass)
+{
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  gtk_widget_class_set_template_from_resource (widget_class, "/org/gnome/Calls/ui/account-overview.ui");
+
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, add_btn);
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, add_row);
+
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, stack);
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, intro);
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, overview);
+
+  gtk_widget_class_bind_template_child (widget_class, CallsAccountOverview, account_window);
+
+  gtk_widget_class_bind_template_callback (widget_class, on_add_account_clicked);
+}
+
+
+static void
+calls_account_overview_init (CallsAccountOverview *self)
+{
+  gtk_widget_init_template (GTK_WIDGET (self));
+
+  gtk_list_box_insert (GTK_LIST_BOX (self->overview),
+                       GTK_WIDGET (self->add_row),
+                       -1);
+  gtk_window_set_transient_for (self->account_window, GTK_WINDOW (self));
+
+  update_state (self);
+}
+
+
+CallsAccountOverview *
+calls_account_overview_new (void)
+{
+  return g_object_new (CALLS_TYPE_ACCOUNT_OVERVIEW,
+                       NULL);
+}