Add initial shell based on GNOME Control Center code.

Author: TheWiseNoob

.gitignore

@@ -8,4 +8,5 @@ compile_commands.json
 omp
 PKGBUILD
 TODO
+/src/clang-format
 /subprojects/blueprint-compiler

src/meson.build

@@ -31,6 +31,8 @@ executable(
         'app.c',
         'sidebar.c',
         'content.c',
+        'panel.c',
+        'shell.c',
         'appwin.c',
         'main.c',
         omp_resources,

src/panel.c

@@ -0,0 +1,202 @@
+#include "panel.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+typedef struct {
+    OMPShell* shell;
+    GCancellable* cancellable;
+
+    gchar* subpage;
+} OMPPanelPrivate;
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (
+    OMPPanel, omp_panel, ADW_TYPE_NAVIGATION_PAGE, G_ADD_PRIVATE (OMPPanel)
+)
+
+enum { PROP_0, PROP_SHELL, PROP_PARAMETERS, PROP_SUBPAGE, N_PROPS };
+
+static GParamSpec* properties[N_PROPS];
+
+/* GtkBuildable interface */
+
+/* GObject overrides */
+
+static void
+omp_panel_set_property (
+    GObject* object, guint prop_id, const GValue* value, GParamSpec* pspec
+)
+{
+    OMPPanelPrivate* priv = omp_panel_get_instance_private (OMP_PANEL (object));
+
+    switch (prop_id) {
+        case PROP_SHELL:
+            /* construct only property */
+            priv->shell = g_value_get_object (value);
+            break;
+
+        case PROP_PARAMETERS: {
+            g_autoptr (GVariant) v = NULL;
+            GVariant* parameters;
+            gsize n_parameters;
+
+            parameters = g_value_get_variant (value);
+
+            if (parameters == NULL)
+                return;
+
+            n_parameters = g_variant_n_children (parameters);
+            if (n_parameters == 0)
+                return;
+
+            g_variant_get_child (parameters, 0, "v", &v);
+
+            if (g_variant_is_of_type (v, G_VARIANT_TYPE_STRING)) {
+                g_set_str (&priv->subpage, g_variant_get_string (v, NULL));
+                g_object_notify_by_pspec (object, properties[PROP_SUBPAGE]);
+            }
+            else if (!g_variant_is_of_type (v, G_VARIANT_TYPE_DICTIONARY))
+                g_warning (
+                    "Wrong type for the first argument GVariant, expected "
+                    "'a{sv}' but got '%s'",
+                    (gchar*)g_variant_get_type (v)
+                );
+            else if (g_variant_n_children (v) > 0)
+                g_warning ("Ignoring additional flags");
+
+            if (n_parameters > 1)
+                g_warning ("Ignoring additional parameters");
+
+            break;
+        }
+
+        default:
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+            break;
+    }
+}
+
+static void
+omp_panel_get_property (
+    GObject* object, guint prop_id, GValue* value, GParamSpec* pspec
+)
+{
+    OMPPanelPrivate* priv = omp_panel_get_instance_private (OMP_PANEL (object));
+
+    switch (prop_id) {
+        case PROP_SHELL:
+            g_value_set_object (value, priv->shell);
+            break;
+
+        case PROP_SUBPAGE:
+            g_value_set_string (value, priv->subpage);
+            break;
+
+        default:
+            G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+            break;
+    }
+}
+
+static void
+omp_panel_finalize (GObject* object)
+{
+    OMPPanelPrivate* priv = omp_panel_get_instance_private (OMP_PANEL (object));
+
+    g_cancellable_cancel (priv->cancellable);
+    g_clear_object (&priv->cancellable);
+    g_clear_pointer (&priv->subpage, g_free);
+
+    G_OBJECT_CLASS (omp_panel_parent_class)->finalize (object);
+}
+
+static void
+omp_panel_class_init (OMPPanelClass* klass)
+{
+    GObjectClass* object_class = G_OBJECT_CLASS (klass);
+
+    object_class->get_property = omp_panel_get_property;
+    object_class->set_property = omp_panel_set_property;
+    object_class->finalize = omp_panel_finalize;
+
+    properties[PROP_SHELL] = g_param_spec_object (
+        "shell", "Shell", "Shell the Panel resides in", OMP_TYPE_SHELL,
+        G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS
+    );
+
+    properties[PROP_PARAMETERS] = g_param_spec_variant (
+        "parameters", "Structured parameters",
+        "Additional parameters passed externally (ie. command line, D-Bus "
+        "activation)",
+        G_VARIANT_TYPE ("av"), NULL, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS
+    );
+
+    properties[PROP_SUBPAGE] = g_param_spec_string (
+        "subpage", "Subpage parameters",
+        "Additional parameter extracted from the parameters property to launch "
+        "a panel subpage",
+        NULL, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS
+    );
+
+    g_object_class_install_properties (object_class, N_PROPS, properties);
+}
+
+static void
+omp_panel_init (OMPPanel* panel)
+{
+}
+
+/**
+ * omp_panel_get_shell:
+ * @panel: A #OMPPanel
+ *
+ * Get the shell that the panel resides in
+ *
+ * Returns: a #OMPShell
+ */
+OMPShell*
+omp_panel_get_shell (OMPPanel* panel)
+{
+    OMPPanelPrivate* priv;
+
+    g_return_val_if_fail (OMP_IS_PANEL (panel), NULL);
+
+    priv = omp_panel_get_instance_private (panel);
+
+    return priv->shell;
+}
+
+const gchar*
+omp_panel_get_help_uri (OMPPanel* panel)
+{
+    OMPPanelClass* class = OMP_PANEL_GET_CLASS (panel);
+
+    if (class->get_help_uri)
+        return class->get_help_uri (panel);
+
+    return NULL;
+}
+
+GCancellable*
+omp_panel_get_cancellable (OMPPanel* panel)
+{
+    OMPPanelPrivate* priv = omp_panel_get_instance_private (panel);
+
+    g_return_val_if_fail (OMP_IS_PANEL (panel), NULL);
+
+    if (priv->cancellable == NULL)
+        priv->cancellable = g_cancellable_new ();
+
+    return priv->cancellable;
+}
+
+void
+omp_panel_deactivate (OMPPanel* panel)
+{
+    OMPPanelPrivate* priv = omp_panel_get_instance_private (panel);
+
+    g_cancellable_cancel (priv->cancellable);
+}

src/panel.h

@@ -0,0 +1,71 @@
+#pragma once
+
+#include <adwaita.h>
+
+/**
+ * Utility macro used to register panels
+ *
+ * use: OMP_PANEL_REGISTER (PluginName, plugin_name)
+ */
+#define OMP_PANEL_REGISTER(PluginName, plugin_name)                            \
+    G_DEFINE_TYPE (PluginName, plugin_name, OMP_TYPE_PANEL)
+
+/**
+ * OMPPanelStaticInitFunc:
+ *
+ * Function that statically allocates resources and initializes
+ * any data that the panel will make use of during runtime.
+ *
+ * If panels represent hardware that can potentially not exist,
+ * e.g. the Wi-Fi panel, these panels can use this function to
+ * show or hide themselves without needing to have an instance
+ * created and running.
+ */
+typedef void (*OMPPanelStaticInitFunc) (void);
+
+#define OMP_TYPE_PANEL (omp_panel_get_type ())
+G_DECLARE_DERIVABLE_TYPE (OMPPanel, omp_panel, OMP, PANEL, AdwNavigationPage)
+
+/**
+ * OMPPanelVisibility:
+ *
+ * @OMP_PANEL_HIDDEN: Panel is hidden from search and sidebar, and not
+ * reachable.
+ * @OMP_PANEL_VISIBLE_IN_SEARCH: Panel is hidden from main view, but can be
+ * aompessed from search.
+ * @OMP_PANEL_VISIBLE: Panel is visible everywhere.
+ */
+typedef enum {
+    OMP_PANEL_HIDDEN,
+    OMP_PANEL_VISIBLE_IN_SEARCH,
+    OMP_PANEL_VISIBLE,
+} OMPPanelVisibility;
+
+/* omp-shell.h requires OMPPanel, so make sure it is defined first */
+#include "shell.h"
+
+G_BEGIN_DECLS
+
+/**
+ * OMPPanelClass:
+ *
+ * The contents of this struct are private and should not be aompessed directly.
+ */
+struct _OMPPanelClass {
+    /*< private >*/
+    AdwNavigationPageClass parent_class;
+
+    const gchar* (*get_help_uri) (OMPPanel* panel);
+};
+
+OMPShell* omp_panel_get_shell (OMPPanel* panel);
+
+GPermission* omp_panel_get_permission (OMPPanel* panel);
+
+const gchar* omp_panel_get_help_uri (OMPPanel* panel);
+
+GCancellable* omp_panel_get_cancellable (OMPPanel* panel);
+
+void omp_panel_deactivate (OMPPanel* panel);
+
+G_END_DECLS