gui/queue: Add a new gui_queue struct

This will be used to store queue state once I no longer support notebook
tabs.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

gui/queue.c

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <gui/queue.h>
+
+void *gui_queue_alloc(struct queue *queue)
+{
+	struct gui_queue *gq = g_malloc(sizeof(struct gui_queue));
+
+	gq->gq_queue = queue;
+	return gq;
+}
+
+void gui_queue_free(struct queue *queue)
+{
+	struct gui_queue *gq = gui_queue(queue);
+
+	queue->q_private = NULL;
+	g_free(gq);
+}

include/gui/queue.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#ifndef OCARINA_GUI_QUEUE_H
+#define OCARINA_GUI_QUEUE_H
+
+#include <core/queue.h>
+
+struct gui_queue {
+	struct queue *gq_queue;
+};
+
+
+/* Called to allocate a new struct gui_queue. */
+void *gui_queue_alloc(struct queue *);
+
+/* Called to free a struct gui_queue. */
+void gui_queue_free(struct queue *);
+
+/* Called to access a the struct gui_queue attached to a queue. */
+static inline struct gui_queue *gui_queue(struct queue *queue)
+{
+	return queue->q_private;
+}
+
+#endif /* OCARINA_GUI_QUEUE_H */

tests/gui/.gitignore

@@ -1,5 +1,6 @@
 builder
 settings
+queue
 window
 sidebar
 collection

tests/gui/Sconscript

@@ -26,6 +26,7 @@ def GuiTest(name):
 env.UsePackage("gmodule-export-2.0")
 res += [ GuiTest("builder")    ]
 res += [ GuiTest("settings")   ]
+res += [ GuiTest("queue")      ]
 res += [ GuiTest("window")     ]
 res += [ GuiTest("sidebar")    ]
 res += [ GuiTest("collection") ]

tests/gui/queue.c

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <gui/queue.h>
+#include <tests/test.h>
+
+void __test_queue_clear(struct queue *queue, unsigned int n) {}
+
+static const struct queue_ops test_ops = {
+	.qop_init    = gui_queue_alloc,
+	.qop_deinit  = gui_queue_free,
+	.qop_cleared = __test_queue_clear,
+};
+
+static void test_queue()
+{
+	struct gui_queue *gq;
+	struct queue q;
+
+	queue_init(&q, 0, &test_ops);
+	gq = gui_queue(&q);
+
+	test_not_equal((void *)gq, NULL);
+	test_equal((void *)gq->gq_queue, (void *)&q);
+
+	queue_deinit(&q);
+	test_equal((void *)gui_queue(&q), NULL);
+}
+
+DECLARE_UNIT_TESTS(
+	UNIT_TEST("Queue", test_queue),
+);