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Tree: add expand_all and collapse_all methods #22728

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Tree: add expand_all and collapse_all methods #22728

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14 changes: 14 additions & 0 deletions doc/classes/Tree.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -218,6 +218,20 @@
If [code]true[/code] column titles are visible.
</description>
</method>
<method name="expand_all">
<return type="void">
</return>
<description>
Expand all the children recursively.
</description>
</method>
<method name="collapse_all">
<return type="void">
</return>
<description>
Collapse all the children recursively.
</description>
</method>
</methods>
<members>
<member name="allow_reselect" type="bool" setter="set_allow_reselect" getter="get_allow_reselect">
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29 changes: 29 additions & 0 deletions scene/gui/tree.cpp
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Expand Up @@ -3102,6 +3102,32 @@ bool Tree::is_anything_selected() {
return (selected_item != NULL);
}

void recursive_collapsed(TreeItem *p_item, bool p_collapsed) {

if (!p_item) {
return;
}

p_item->set_collapsed(p_collapsed);
TreeItem *c = p_item->get_children();

while (c) {

recursive_collapsed(c, p_collapsed);
c = c->get_next();
}
}

void Tree::expand_all() {

recursive_collapsed(root, false);
}

void Tree::collapse_all() {

recursive_collapsed(root, true);
}

void Tree::clear() {

if (blocked > 0) {
Expand Down Expand Up @@ -3765,6 +3791,9 @@ void Tree::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_select_mode", "mode"), &Tree::set_select_mode);
ClassDB::bind_method(D_METHOD("get_select_mode"), &Tree::get_select_mode);

ClassDB::bind_method(D_METHOD("expand_all"), &Tree::expand_all);
ClassDB::bind_method(D_METHOD("collapse_all"), &Tree::collapse_all);

ClassDB::bind_method(D_METHOD("set_columns", "amount"), &Tree::set_columns);
ClassDB::bind_method(D_METHOD("get_columns"), &Tree::get_columns);

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3 changes: 3 additions & 0 deletions scene/gui/tree.h
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Expand Up @@ -553,6 +553,9 @@ class Tree : public Control {
void deselect_all();
bool is_anything_selected();

void expand_all();
void collapse_all();

void set_columns(int p_columns);
int get_columns() const;

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