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Use interface ComponentWithExpandableItems instead of concrete class

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GitOrigin-RevId: 5d848c6ccd73a160dd6dd89271dcf0858a6f027f
This commit is contained in:
Sergey Malenkov
2020-01-30 08:32:31 +00:00
committed by intellij-monorepo-bot
parent 3961c1d8ac
commit 37fa35d8f0
1 changed files with 6 additions and 5 deletions
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platform/platform-impl/src/com/intellij/ui/tree/ui/DefaultTreeUI.java
+6 -5
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@@ -9,10 +9,10 @@ import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.ui.BackgroundSupplier;
import com.intellij.ui.ComponentUtil;
import com.intellij.ui.ComponentWithExpandableItems;
import com.intellij.ui.components.JBScrollPane;
import com.intellij.ui.tree.AsyncTreeModel;
import com.intellij.ui.tree.TreePathBackgroundSupplier;
import com.intellij.ui.treeStructure.Tree;
import com.intellij.util.ui.MouseEventAdapter;
import com.intellij.util.ui.UIUtil;
import com.intellij.util.ui.tree.TreeUtil;
@@ -109,10 +109,11 @@ public final class DefaultTreeUI extends BasicTreeUI {
}
private static int getExpandedRow(@NotNull JTree tree) {
if (tree instanceof Tree) {
Tree custom = (Tree)tree;
Collection<Integer> items = custom.getExpandableItemsHandler().getExpandedItems();
if (!items.isEmpty()) return items.iterator().next();
if (tree instanceof ComponentWithExpandableItems) {
ComponentWithExpandableItems<?> component = (ComponentWithExpandableItems<?>)tree;
Collection<?> items = component.getExpandableItemsHandler().getExpandedItems();
Object item = items.isEmpty() ? null : items.iterator().next();
if (item instanceof Integer) return (Integer)item;
}
return -1;
}