From 011fffcedfa2845179355052f69a2f0ceabd5852 Mon Sep 17 00:00:00 2001
From: Matt Watson <mattdangerw@gmail.com>
Date: Mon, 13 Jan 2014 15:39:25 -0800
Subject: Added EosCustomContainer C class for gjs containers

forall cannot be overridden in gjs. There's an upstream bug here
https://bugzilla.gnome.org/show_bug.cgi?id=701567
but that does not look like it will be fixed soon. So for now
added a small c class that take care of GtkContainers add, remove
and forall methods. This makes it possible to write generic containers
in gjs. See docs for an example
[endlessm/eos-sdk#481]
---
 endless/eoscustomcontainer.c | 114 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 endless/eoscustomcontainer.c

(limited to 'endless/eoscustomcontainer.c')

diff --git a/endless/eoscustomcontainer.c b/endless/eoscustomcontainer.c
new file mode 100644
index 0000000..a68745b
--- /dev/null
+++ b/endless/eoscustomcontainer.c
@@ -0,0 +1,114 @@
+/* Copyright 2014 Endless Mobile, Inc. */
+
+#include "config.h"
+#include "eoscustomcontainer.h"
+
+#include <gtk/gtk.h>
+
+/**
+ * SECTION:custom-container
+ * @short_description: For gjs container implementations
+ * @title: Custom Container
+ *
+ * This container allows for implementing a custom size allocate routine in
+ * gjs. This container implements the bare minimum of virtual functions from
+ * GtkContainer, add, remove and forall. Add and remove simply append to and
+ * remove from an internal list, and forall iterates over that list. Forall
+ * cannot be implemented in gjs, it's not supported by gobject-introspection,
+ * so this is needed for custom gjs containers. This class will not
+ * size_allocate any children or ever queue_resize, so that is up to
+ * subclasses in gjs.
+ *
+ * Here's an example gjs program which allocates a GtkFrame the top right
+ * quarter of it's allocation.
+ * |[
+ * const TestContainer = Lang.Class({
+ *   Name: 'TestContainer',
+ *   Extends: Endless.CustomContainer,
+ *
+ *   _init: function() {
+ *     this.parent();
+ *
+ *     this._frame = new Gtk.Frame();
+ *     this.add(this._frame);
+ *   },
+ *
+ *   vfunc_size_allocate: function (alloc) {
+ *     this.parent(alloc);
+ *     alloc.width = alloc.width / 2;
+ *     alloc.height = alloc.height / 2;
+ *     this._frame.size_allocate(alloc);
+ *   }
+ * });
+ * ]|
+ */
+
+typedef struct {
+  GList *children;
+} EosCustomContainerPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (EosCustomContainer, eos_custom_container, GTK_TYPE_CONTAINER)
+
+static void
+eos_custom_container_add (GtkContainer *container,
+                          GtkWidget    *child)
+{
+  EosCustomContainer *self = EOS_CUSTOM_CONTAINER (container);
+  EosCustomContainerPrivate *priv = eos_custom_container_get_instance_private (self);
+
+  priv->children = g_list_prepend (priv->children, child);
+  gtk_widget_set_parent (child, GTK_WIDGET (container));
+}
+
+static void
+eos_custom_container_remove (GtkContainer *container,
+                             GtkWidget    *child)
+{
+  EosCustomContainer *self = EOS_CUSTOM_CONTAINER (container);
+  EosCustomContainerPrivate *priv = eos_custom_container_get_instance_private (self);
+
+  priv->children = g_list_remove (priv->children, child);
+  gtk_widget_unparent (child);
+}
+
+static void
+eos_custom_container_forall (GtkContainer *container,
+                             gboolean      include_internals,
+                             GtkCallback   callback,
+                             gpointer      callback_data)
+{
+  EosCustomContainer *self = EOS_CUSTOM_CONTAINER (container);
+  EosCustomContainerPrivate *priv = eos_custom_container_get_instance_private (self);
+
+  g_list_foreach (priv->children, (GFunc)callback, callback_data);
+}
+
+static void
+eos_custom_container_class_init (EosCustomContainerClass *klass)
+{
+  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
+
+  container_class->add = eos_custom_container_add;
+  container_class->remove = eos_custom_container_remove;
+  container_class->forall = eos_custom_container_forall;
+}
+
+static void
+eos_custom_container_init (EosCustomContainer *self)
+{
+  GtkWidget *widget = GTK_WIDGET (self);
+  gtk_widget_set_has_window (widget, FALSE);
+}
+
+/**
+ * eos_custom_container_new:
+ *
+ * Creates a new custom container.
+ *
+ * Returns: the custom container.
+ */
+GtkWidget *
+eos_custom_container_new (void)
+{
+  return g_object_new (EOS_TYPE_CUSTOM_CONTAINER, NULL);
+}
-- 
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