gui/treeview: Add a function for accessing the treeview

And rename the widget from "o_treeview" to just "treeview".

I wanted to rename gui/view.c to gui/treeview.c at some point.  I
decided to gradually rework things into a new file to make it easier to
track progress.

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

gui/view.c

@@ -7,6 +7,7 @@
 #include <gui/builder.h>
 #include <gui/filter.h>
 #include <gui/queue.h>
+#include <gui/treeview.h>
 #include <gui/view.h>
 #include <gui/window.h>
 #include <glib/gi18n.h>
@@ -293,7 +294,7 @@ void __view_rc_add_new(GtkMenuItem *item, gpointer data)
 
 static void __view_rc_add_other(GtkWidget *item, gpointer data)
 {
-	GtkTreeView      *treeview  = GTK_TREE_VIEW(gui_builder_widget("o_treeview"));
+	GtkTreeView      *treeview  = gui_treeview();
 	GtkTreeSelection *selection = gtk_tree_view_get_selection(treeview);
 	struct playlist  *playlist  = (struct playlist *)data;
 	struct view_add_data vad_data = {
@@ -381,7 +382,7 @@ void gui_view_init()
 	GtkTreeViewColumn *col;
 	int i, pos;
 
-	view_treeview = GTK_TREE_VIEW(gui_builder_widget("o_treeview"));
+	view_treeview = gui_treeview();
 
 	for (i = 0; i < GUI_MODEL_N_COLUMNS; i++) {
 		col = gtk_tree_view_get_column(view_treeview, i);

include/gui/treeview.h

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#ifndef OCARINA_GUI_TREEVIEW_H
+#define OCARINA_GUI_TREEVIEW_H
+
+/* Called to access the treeview widget. */
+static inline GtkTreeView *gui_treeview()
+{
+	return GTK_TREE_VIEW(gui_builder_widget("treeview"));
+}
+
+#endif /* OCARINA_GUI_TREEVIEW_H */

share/ocarina/ocarina.ui

@@ -876,7 +876,7 @@ audio-volume-medium</property>
                     <property name="vexpand">True</property>
                     <property name="shadow_type">in</property>
                     <child>
-                      <object class="GtkTreeView" id="o_treeview">
+                      <object class="GtkTreeView" id="treeview">
                         <property name="visible">True</property>
                         <property name="can_focus">True</property>
                         <property name="enable_search">False</property>

tests/gui/.gitignore

@@ -3,6 +3,7 @@ window
 idle
 model
 filter
+treeview
 view
 queue
 sidebar

tests/gui/CMakeLists.txt

@@ -9,6 +9,7 @@ gui_unit_test(Window)
 gui_unit_test(Idle)
 gui_unit_test(Model)
 gui_unit_test(Filter)
+gui_unit_test(Treeview)
 gui_unit_test(View)
 gui_unit_test(Queue)
 gui_unit_test(Sidebar)

tests/gui/treeview.c

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <core/core.h>
+#include <core/idle.h>
+#include <gui/filter.h>
+#include <gui/model.h>
+#include <gui/treeview.h>
+#include <tests/test.h>
+
+struct core_init_data init_data = {};
+
+void test_treeview()
+{
+	g_assert_nonnull(gui_treeview());
+	g_assert_true(GTK_IS_TREE_VIEW(gui_treeview()));
+}
+
+int main(int argc, char **argv)
+{
+	int ret;
+
+	gtk_init(&argc, NULL);
+	core_init(&argc, NULL, &init_data);
+	gui_builder_init("share/ocarina/ocarina.ui");
+	gui_model_init();
+	gui_filter_init();
+	while (idle_run_task()) {}
+
+	g_test_init(&argc, &argv, NULL);
+	g_test_add_func("/Gui/Treeview", test_treeview);
+	ret = g_test_run();
+
+	core_deinit();
+	gui_filter_deinit();
+	gui_model_deinit();
+	return ret;
+}

tests/gui/view.c

@@ -9,6 +9,7 @@
 #include <gui/builder.h>
 #include <gui/filter.h>
 #include <gui/model.h>
+#include <gui/treeview.h>
 #include <gui/view.h>
 #include <tests/test.h>
 #include <tests/gui.h>
@@ -57,7 +58,7 @@ static void test_treeview()
 	gui_filter_set_playlist(playlist_get(PL_SYSTEM, "Collection"));
 	filter = GTK_TREE_MODEL(gui_filter_get());
 
-	treeview  = GTK_TREE_VIEW(gui_builder_widget("o_treeview"));
+	treeview  = gui_treeview();
 
 	for (i = 0; i < GUI_MODEL_N_COLUMNS; i++)
 		g_assert_false(settings_has(QUEUE_SETTINGS[i]));