From f40be8b5b6227775901a99946779661d0b4439e6 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 1 Nov 2020 12:35:00 +0100
Subject: Added files demo and needed functions

---
 libgui/gui.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)

(limited to 'libgui/gui.c')

diff --git a/libgui/gui.c b/libgui/gui.c
index db7845a..7a47bc9 100644
--- a/libgui/gui.c
+++ b/libgui/gui.c
@@ -67,6 +67,38 @@ static void merge_elements(struct element *container)
 	}
 }
 
+static void remove_childs(struct element *elem);
+static void remove_element(struct element *elem)
+{
+	if (!elem)
+		return;
+
+	remove_childs(elem);
+	free(elem->ctx->fb);
+	elem->ctx->fb = NULL;
+	free(elem->ctx);
+	elem->ctx = NULL;
+	free(elem->data);
+	elem->data = NULL;
+	free(elem);
+	elem = NULL;
+}
+
+static void remove_childs(struct element *elem)
+{
+	if (!elem || !elem->childs || !elem->childs->head)
+		return;
+
+	struct node *iterator = elem->childs->head;
+	while (iterator != NULL) {
+		struct element *child = iterator->data;
+		remove_element(child);
+		iterator = iterator->next;
+	}
+
+	list_destroy(elem->childs);
+}
+
 static struct element *element_at(struct element *container, int x, int y)
 {
 	if (!container || !container->childs || !container->childs->head)
@@ -250,6 +282,31 @@ struct element *gui_add_container(struct element *container, int x, int y, u32 w
 	return new_container;
 }
 
+void gui_remove_childs(struct element *elem)
+{
+	remove_childs(elem);
+	elem->childs = list_new();
+	gui_sync_container(elem);
+	merge_elements(get_root(elem->window_id));
+	gfx_redraw_focused();
+}
+
+void gui_remove_element(struct element *elem)
+{
+	if (!elem)
+		return;
+
+	u32 id = elem->window_id;
+	struct element *root = get_root(id);
+	u8 is_root = root == elem;
+	remove_element(elem);
+	elem = NULL;
+	if (!is_root) {
+		merge_elements(get_root(id));
+		gfx_redraw_focused();
+	}
+}
+
 // TODO: Split into small functions
 void gui_event_loop(struct element *container)
 {
-- 
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