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Add functionality to insert tree item.

This commit is contained in:
Ray Koopa 2017-12-14 22:13:48 +01:00
parent d9f7fa4557
commit a08c5d73a5
2 changed files with 30 additions and 22 deletions
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44
scene/gui/tree.cpp
View File

@ -2950,43 +2950,51 @@ Size2 Tree::get_minimum_size() const {
return Size2(1, 1);
}
TreeItem *Tree::create_item(TreeItem *p_parent) {
TreeItem *Tree::create_item(TreeItem *p_parent, int p_idx) {
ERR_FAIL_COND_V(blocked > 0, NULL);
TreeItem *ti = memnew(TreeItem(this));
ERR_FAIL_COND_V(!ti, NULL);
ti->cells.resize(columns.size());
TreeItem *ti = NULL;
if (p_parent) {
/* Always append at the end */
// Append or insert a new item to the given parent.
ti = memnew(TreeItem(this));
ERR_FAIL_COND_V(!ti, NULL);
ti->cells.resize(columns.size());
TreeItem *last = 0;
TreeItem *prev = NULL;
TreeItem *c = p_parent->childs;
int idx = 0;
while (c) {
last = c;
if (idx++ == p_idx) {
ti->next = c;
break;
}
prev = c;
c = c->next;
}
if (last) {
last->next = ti;
} else {
if (prev)
prev->next = ti;
else
p_parent->childs = ti;
}
ti->parent = p_parent;
} else {
if (root)
ti->childs = root;
if (!root) {
// No root exists, make the given item the new root.
ti = memnew(TreeItem(this));
ERR_FAIL_COND_V(!ti, NULL);
ti->cells.resize(columns.size());
root = ti;
} else {
// Root exists, append or insert to root.
ti = create_item(root, p_idx);
}
}
return ti;
@ -3723,7 +3731,7 @@ void Tree::_bind_methods() {
ClassDB::bind_method(D_METHOD("_scroll_moved"), &Tree::_scroll_moved);
ClassDB::bind_method(D_METHOD("clear"), &Tree::clear);
ClassDB::bind_method(D_METHOD("create_item", "parent"), &Tree::_create_item, DEFVAL(Variant()));
ClassDB::bind_method(D_METHOD("create_item", "parent", "idx"), &Tree::_create_item, DEFVAL(Variant()), DEFVAL(-1));
ClassDB::bind_method(D_METHOD("get_root"), &Tree::get_root);
ClassDB::bind_method(D_METHOD("set_column_min_width", "column", "min_width"), &Tree::set_column_min_width);

6
scene/gui/tree.h
View File

@ -511,8 +511,8 @@ protected:
static void _bind_methods();
//bind helpers
Object *_create_item(Object *p_parent) {
return create_item(Object::cast_to<TreeItem>(p_parent));
Object *_create_item(Object *p_parent, int p_idx = -1) {
return create_item(Object::cast_to<TreeItem>(p_parent), p_idx);
}
TreeItem *_get_next_selected(Object *p_item) {
@ -532,7 +532,7 @@ public:
void clear();
TreeItem *create_item(TreeItem *p_parent = 0);
TreeItem *create_item(TreeItem *p_parent = 0, int p_idx = -1);
TreeItem *get_root();
TreeItem *get_last_item();