MinecraftTreeStructureProvider.kt

/*
 * Minecraft Development for IntelliJ
 *
 * https://mcdev.io/
 *
 * Copyright (C) 2025 minecraft-dev
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, version 3.0 only.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.demonwav.mcdev

import com.demonwav.mcdev.region.RegionFileType
import com.demonwav.mcdev.region.RegionPsiFileNode
import com.intellij.ide.projectView.TreeStructureProvider
import com.intellij.ide.projectView.ViewSettings
import com.intellij.ide.projectView.impl.nodes.PsiFileNode
import com.intellij.ide.util.treeView.AbstractTreeNode

private fun mapMcaNode(node: AbstractTreeNode<*>): AbstractTreeNode<*> {
    if (node is PsiFileNode) {
        val value = node.value
        if (value?.fileType is RegionFileType) {
            return RegionPsiFileNode(node.project, value, node.settings)
        }
    }

    return node
}

class MinecraftTreeStructureProvider : TreeStructureProvider {
    override fun modify(
        parent: AbstractTreeNode<*>,
        children: MutableCollection<AbstractTreeNode<*>>,
        settings: ViewSettings?
    ) = children.mapTo(ArrayList(children.size), ::mapMcaNode)
}