fully functional selection logic

cidr/src/main/kotlin/com/falsepattern/zigbrains/debugger/toolchain/ZigDebuggerToolchainService.kt

@@ -35,6 +35,7 @@ import com.intellij.openapi.project.Project
 import com.intellij.openapi.ui.DialogBuilder
 import com.intellij.openapi.util.SystemInfo
 import com.intellij.openapi.util.io.toNioPathOrNull
+import com.intellij.platform.util.progress.reportSequentialProgress
 import com.intellij.ui.BrowserHyperlinkListener
 import com.intellij.ui.HyperlinkLabel
 import com.intellij.ui.components.JBPanel
@@ -47,6 +48,7 @@ import com.jetbrains.cidr.execution.debugger.CidrDebuggerPathManager
 import com.jetbrains.cidr.execution.debugger.backend.bin.UrlProvider
 import com.jetbrains.cidr.execution.debugger.backend.lldb.LLDBDriverConfiguration
 import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.runInterruptible
 import kotlinx.coroutines.withContext
 import java.io.IOException
 import java.net.URL
@@ -167,7 +169,9 @@ class ZigDebuggerToolchainService {
         }
 
         try {
+            withContext(Dispatchers.IO) {
                 downloadAndUnArchive(baseDir, downloadableBinaries)
+            }
             return DownloadResult.Ok(baseDir)
         } catch (e: IOException) {
             //TODO logging
@@ -206,6 +210,7 @@ class ZigDebuggerToolchainService {
     @Throws(IOException::class)
     @RequiresEdt
     private suspend fun downloadAndUnArchive(baseDir: Path, binariesToDownload: List<DownloadableDebuggerBinary>) {
+        reportSequentialProgress { reporter ->
             val service = DownloadableFileService.getInstance()
 
             val downloadDir = baseDir.toFile()
@@ -217,7 +222,7 @@ class ZigDebuggerToolchainService {
 
             val downloader = service.createDownloader(descriptions, "Debugger downloading")
             val downloadDirectory = downloadPath().toFile()
-        val downloadResults = withContext(Dispatchers.IO) {
+            val downloadResults = reporter.sizedStep(100) {
                 coroutineToIndicator {
                     downloader.download(downloadDirectory)
                 }
@@ -228,13 +233,18 @@ class ZigDebuggerToolchainService {
                 val binaryToDownload = binariesToDownload.first { it.url == downloadUrl }
                 val propertyName = binaryToDownload.propertyName
                 val archiveFile = result.first
+                reporter.indeterminateStep {
+                    coroutineToIndicator {
                         Unarchiver.unarchive(archiveFile.toPath(), baseDir, binaryToDownload.prefix)
+                    }
+                }
                 archiveFile.delete()
                 versions[propertyName] = binaryToDownload.version
             }
 
             saveVersionsFile(baseDir, versions)
         }
+    }
 
     private fun lldbUrls(): Pair<URL, URL>? {
         val lldb = UrlProvider.lldb(OS.CURRENT, CpuArch.CURRENT) ?: return null

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ZigToolchainListService.kt

@@ -25,7 +25,9 @@ package com.falsepattern.zigbrains.project.toolchain
 import com.falsepattern.zigbrains.project.toolchain.base.ZigToolchain
 import com.falsepattern.zigbrains.project.toolchain.base.resolve
 import com.falsepattern.zigbrains.project.toolchain.base.toRef
+import com.falsepattern.zigbrains.shared.zigCoroutineScope
 import com.intellij.openapi.components.*
+import kotlinx.coroutines.launch
 import java.lang.ref.WeakReference
 import java.util.UUID
 
@@ -37,19 +39,43 @@ import java.util.UUID
 class ZigToolchainListService: SerializablePersistentStateComponent<ZigToolchainListService.State>(State()) {
     private val changeListeners = ArrayList<WeakReference<ToolchainListChangeListener>>()
     fun setToolchain(uuid: UUID, toolchain: ZigToolchain) {
+        val str = uuid.toString()
+        val ref = toolchain.toRef()
         updateState {
             val newMap = HashMap<String, ZigToolchain.Ref>()
             newMap.putAll(it.toolchains)
-            newMap[uuid.toString()] = toolchain.toRef()
+            newMap[str] = ref
             it.copy(toolchains = newMap)
         }
         notifyChanged()
     }
 
+    fun registerNewToolchain(toolchain: ZigToolchain): UUID {
+        val ref = toolchain.toRef()
+        var uuid = UUID.randomUUID()
+        updateState {
+            val newMap = HashMap<String, ZigToolchain.Ref>()
+            newMap.putAll(it.toolchains)
+            var uuidStr = uuid.toString()
+            while (newMap.containsKey(uuidStr)) {
+                uuid = UUID.randomUUID()
+                uuidStr = uuid.toString()
+            }
+            newMap[uuidStr] = ref
+            it.copy(toolchains = newMap)
+        }
+        notifyChanged()
+        return uuid
+    }
+
     fun getToolchain(uuid: UUID): ZigToolchain? {
         return state.toolchains[uuid.toString()]?.resolve()
     }
 
+    fun hasToolchain(uuid: UUID): Boolean {
+        return state.toolchains.containsKey(uuid.toString())
+    }
+
     fun removeToolchain(uuid: UUID) {
         val str = uuid.toString()
         updateState {
@@ -67,7 +93,9 @@ class ZigToolchainListService: SerializablePersistentStateComponent<ZigToolchain
                     changeListeners.removeAt(i)
                     continue
                 }
+                zigCoroutineScope.launch {
                     v.toolchainListChanged()
+                }
                 i++
             }
         }
@@ -88,6 +116,7 @@ class ZigToolchainListService: SerializablePersistentStateComponent<ZigToolchain
         }
     }
 
+
     val toolchains: Sequence<Pair<UUID, ZigToolchain>>
         get() = state.toolchains
             .asSequence()
@@ -109,6 +138,6 @@ class ZigToolchainListService: SerializablePersistentStateComponent<ZigToolchain
 
     @FunctionalInterface
     interface ToolchainListChangeListener {
-        fun toolchainListChanged()
+        suspend fun toolchainListChanged()
     }
 }

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ZigToolchainService.kt

@@ -39,7 +39,16 @@ import java.util.UUID
 )
 class ZigToolchainService: SerializablePersistentStateComponent<ZigToolchainService.State>(State()) {
     var toolchainUUID: UUID?
-        get() = state.toolchain.ifBlank { null }?.let { UUID.fromString(it) }
+        get() = state.toolchain.ifBlank { null }?.let { UUID.fromString(it) }?.takeIf {
+            if (ZigToolchainListService.getInstance().hasToolchain(it)) {
+                true
+            } else {
+                updateState {
+                    it.copy(toolchain = "")
+                }
+                false
+            }
+        }
         set(value) {
             updateState {
                 it.copy(toolchain = value?.toString() ?: "")
@@ -49,11 +58,10 @@ class ZigToolchainService: SerializablePersistentStateComponent<ZigToolchainServ
     val toolchain: ZigToolchain?
         get() = toolchainUUID?.let { ZigToolchainListService.getInstance().getToolchain(it) }
 
-    @JvmRecord
     data class State(
         @JvmField
         @Attribute
-        val toolchain: String = ""
+        var toolchain: String = ""
     )
 
     companion object {

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/downloader/DirectoryState.kt

@@ -0,0 +1,57 @@
+package com.falsepattern.zigbrains.project.toolchain.downloader
+
+import java.nio.file.Files
+import java.nio.file.Path
+import kotlin.contracts.ExperimentalContracts
+import kotlin.io.path.exists
+import kotlin.io.path.isDirectory
+
+enum class DirectoryState {
+    Invalid,
+    NotAbsolute,
+    NotDirectory,
+    NotEmpty,
+    CreateNew,
+    Ok;
+
+    fun isValid(): Boolean {
+        return when(this) {
+            Invalid, NotAbsolute, NotDirectory, NotEmpty -> false
+            CreateNew, Ok -> true
+        }
+    }
+
+    companion object {
+        @JvmStatic
+        fun determine(path: Path?): DirectoryState {
+            if (path == null) {
+                return Invalid
+            }
+            if (!path.isAbsolute) {
+                return NotAbsolute
+            }
+            if (!path.exists()) {
+                var parent: Path? = path.parent
+                while(parent != null) {
+                    if (!parent.exists()) {
+                        parent = parent.parent
+                        continue
+                    }
+                    if (!parent.isDirectory()) {
+                        return NotDirectory
+                    }
+                    return CreateNew
+                }
+                return Invalid
+            }
+            if (!path.isDirectory()) {
+                return NotDirectory
+            }
+            val isEmpty = Files.newDirectoryStream(path).use { !it.iterator().hasNext() }
+            if (!isEmpty) {
+                return NotEmpty
+            }
+            return Ok
+        }
+    }
+}

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/downloader/Downloader.kt

@@ -20,14 +20,16 @@
  * along with ZigBrains. If not, see <https://www.gnu.org/licenses/>.
  */
 
-package com.falsepattern.zigbrains.project.toolchain.ui
+package com.falsepattern.zigbrains.project.toolchain.downloader
 
 import com.falsepattern.zigbrains.ZigBrainsBundle
-import com.falsepattern.zigbrains.project.toolchain.downloader.ZigVersionInfo
+import com.falsepattern.zigbrains.project.toolchain.base.ZigToolchain
+import com.falsepattern.zigbrains.project.toolchain.local.LocalZigToolchain
 import com.falsepattern.zigbrains.shared.coroutine.asContextElement
 import com.falsepattern.zigbrains.shared.coroutine.runInterruptibleEDT
 import com.intellij.icons.AllIcons
 import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory
+import com.intellij.openapi.observable.util.whenFocusGained
 import com.intellij.openapi.ui.ComboBox
 import com.intellij.openapi.ui.DialogBuilder
 import com.intellij.openapi.util.Disposer
@@ -43,95 +45,38 @@ import com.intellij.ui.dsl.builder.AlignX
 import com.intellij.ui.dsl.builder.Cell
 import com.intellij.ui.dsl.builder.panel
 import com.intellij.util.asSafely
-import kotlinx.coroutines.Dispatchers
+import com.intellij.util.concurrency.annotations.RequiresEdt
-import kotlinx.coroutines.withContext
 import java.awt.Component
-import java.nio.file.Files
 import java.nio.file.Path
-import java.util.UUID
+import java.util.*
 import javax.swing.DefaultComboBoxModel
 import javax.swing.JList
 import javax.swing.event.DocumentEvent
-import kotlin.contracts.ExperimentalContracts
-import kotlin.io.path.exists
-import kotlin.io.path.isDirectory
 
 //TODO lang
 object Downloader {
-    suspend fun downloadToolchain(component: Component): UUID? {
+    suspend fun downloadToolchain(component: Component): ZigToolchain? {
         val info = withModalProgress(
             ModalTaskOwner.component(component),
             "Fetching zig version information",
-            TaskCancellation.cancellable()) {
+            TaskCancellation.cancellable()
-            withContext(Dispatchers.IO) {
+        ) {
             ZigVersionInfo.downloadVersionList()
         }
-        }
         val (downloadPath, version) = runInterruptibleEDT(component.asContextElement()) {
             selectToolchain(info)
         } ?: return null
         withModalProgress(
             ModalTaskOwner.component(component),
-            "Downloading zig tarball",
+            "Installing Zig ${version.version}",
-            TaskCancellation.cancellable()) {
+            TaskCancellation.cancellable()
-            withContext(Dispatchers.IO) {
+        ) {
             version.downloadAndUnpack(downloadPath)
         }
-        }
+        return LocalZigToolchain.tryFromPath(downloadPath)
-        return null
-    }
-
-    private enum class DirectoryState {
-        Invalid,
-        NotAbsolute,
-        NotDirectory,
-        NotEmpty,
-        CreateNew,
-        Ok;
-
-        fun isValid(): Boolean {
-            return when(this) {
-                Invalid, NotAbsolute, NotDirectory, NotEmpty -> false
-                CreateNew, Ok -> true
-            }
-        }
-
-        companion object {
-            @OptIn(ExperimentalContracts::class)
-            @JvmStatic
-            fun determine(path: Path?): DirectoryState {
-                if (path == null) {
-                    return Invalid
-                }
-                if (!path.isAbsolute) {
-                    return NotAbsolute
-                }
-                if (!path.exists()) {
-                    var parent: Path? = path.parent
-                    while(parent != null) {
-                        if (!parent.exists()) {
-                            parent = parent.parent
-                            continue
-                        }
-                        if (!parent.isDirectory()) {
-                            return NotDirectory
-                        }
-                        return CreateNew
-                    }
-                    return Invalid
-                }
-                if (!path.isDirectory()) {
-                    return NotDirectory
-                }
-                val isEmpty = Files.newDirectoryStream(path).use { !it.iterator().hasNext() }
-                if (!isEmpty) {
-                    return NotEmpty
-                }
-                return Ok
-            }
-        }
     }
 
+    @RequiresEdt
     private fun selectToolchain(info: List<ZigVersionInfo>): Pair<Path, ZigVersionInfo>? {
         val dialog = DialogBuilder()
         val theList = ComboBox(DefaultComboBoxModel(info.toTypedArray()))
@@ -148,14 +93,14 @@ object Downloader {
         }
         val outputPath = textFieldWithBrowseButton(
             null,
-            FileChooserDescriptorFactory.createSingleFolderDescriptor().withTitle(ZigBrainsBundle.message("dialog.title.zig-toolchain"))
+            FileChooserDescriptorFactory.createSingleFolderDescriptor()
+                .withTitle(ZigBrainsBundle.message("dialog.title.zig-toolchain"))
         )
         Disposer.register(dialog, outputPath)
         outputPath.textField.columns = 50
 
         lateinit var errorMessageBox: JBLabel
-        outputPath.addDocumentListener(object: DocumentAdapter() {
+        fun onChanged() {
-            override fun textChanged(e: DocumentEvent) {
             val path = outputPath.text.ifBlank { null }?.toNioPathOrNull()
             val state = DirectoryState.determine(path)
             if (state.isValid()) {
@@ -175,6 +120,13 @@ object Downloader {
             }
             dialog.window.repaint()
         }
+        outputPath.whenFocusGained {
+            onChanged()
+        }
+        outputPath.addDocumentListener(object: DocumentAdapter() {
+            override fun textChanged(e: DocumentEvent) {
+                onChanged()
+            }
         })
         var archiveSizeCell: Cell<*>? = null
         fun detect(item: ZigVersionInfo) {
@@ -200,7 +152,7 @@ object Downloader {
         }
         detect(info[0])
         dialog.centerPanel(center)
-        dialog.setTitle("Version Selector")
+        dialog.setTitle("Zig Downloader")
         dialog.addCancelAction()
         dialog.addOkAction().also { it.setText("Download") }
         if (!dialog.showAndGet()) {
@@ -216,8 +168,4 @@ object Downloader {
 
         return path to version
     }
-
-    private suspend fun installToolchain(path: Path, version: ZigVersionInfo): Boolean {
-        TODO("Not yet implemented")
-    }
 }

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/downloader/LocalSelector.kt

@@ -0,0 +1,104 @@
+/*
+ * This file is part of ZigBrains.
+ *
+ * Copyright (C) 2023-2025 FalsePattern
+ * All Rights Reserved
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * ZigBrains 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, only version 3 of the License.
+ *
+ * ZigBrains 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ZigBrains. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.falsepattern.zigbrains.project.toolchain.downloader
+
+import com.falsepattern.zigbrains.Icons
+import com.falsepattern.zigbrains.ZigBrainsBundle
+import com.falsepattern.zigbrains.project.toolchain.ZigToolchainListService
+import com.falsepattern.zigbrains.project.toolchain.base.ZigToolchain
+import com.falsepattern.zigbrains.project.toolchain.local.LocalZigToolchain
+import com.falsepattern.zigbrains.shared.coroutine.asContextElement
+import com.falsepattern.zigbrains.shared.coroutine.runInterruptibleEDT
+import com.intellij.icons.AllIcons
+import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory
+import com.intellij.openapi.ui.DialogBuilder
+import com.intellij.openapi.util.Disposer
+import com.intellij.ui.DocumentAdapter
+import com.intellij.ui.components.JBLabel
+import com.intellij.ui.components.textFieldWithBrowseButton
+import com.intellij.ui.dsl.builder.AlignX
+import com.intellij.ui.dsl.builder.panel
+import com.intellij.util.concurrency.annotations.RequiresEdt
+import java.awt.Component
+import javax.swing.event.DocumentEvent
+
+object LocalSelector {
+    suspend fun browseFromDisk(component: Component): ZigToolchain? {
+        return runInterruptibleEDT(component.asContextElement()) {
+            doBrowseFromDisk()
+        }
+    }
+
+    @RequiresEdt
+    private fun doBrowseFromDisk(): ZigToolchain? {
+        val dialog = DialogBuilder()
+        val path = textFieldWithBrowseButton(
+            null,
+            FileChooserDescriptorFactory.createSingleFolderDescriptor()
+                .withTitle(ZigBrainsBundle.message("dialog.title.zig-toolchain"))
+        )
+        Disposer.register(dialog, path)
+        path.textField.columns = 50
+        lateinit var errorMessageBox: JBLabel
+        path.addDocumentListener(object: DocumentAdapter() {
+            override fun textChanged(e: DocumentEvent) {
+                val tc = LocalZigToolchain.tryFromPathString(path.text)
+                if (tc == null) {
+                    errorMessageBox.icon = AllIcons.General.Error
+                    errorMessageBox.text = "Invalid toolchain path"
+                    dialog.setOkActionEnabled(false)
+                } else if (ZigToolchainListService
+                        .getInstance()
+                        .toolchains
+                        .mapNotNull { it.second as? LocalZigToolchain }
+                        .any { it.location == tc.location }
+                ) {
+                    errorMessageBox.icon = AllIcons.General.Warning
+                    errorMessageBox.text = tc.name?.let { "Toolchain already exists as \"$it\"" } ?: "Toolchain already exists"
+                    dialog.setOkActionEnabled(true)
+                } else {
+                    errorMessageBox.icon = Icons.Zig
+                    errorMessageBox.text = tc.name ?: "OK"
+                    dialog.setOkActionEnabled(true)
+                }
+            }
+        })
+        val center = panel {
+            row("Path:") {
+                cell(path).resizableColumn().align(AlignX.FILL)
+            }
+            row {
+                errorMessageBox = JBLabel()
+                cell(errorMessageBox)
+            }
+        }
+        dialog.centerPanel(center)
+        dialog.setTitle("Zig Browser")
+        dialog.addCancelAction()
+        dialog.addOkAction().also { it.setText("Add") }
+        if (!dialog.showAndGet()) {
+            return null
+        }
+        return LocalZigToolchain.tryFromPathString(path.text)
+    }
+}

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/downloader/ZigVersionInfo.kt

@@ -24,12 +24,12 @@ package com.falsepattern.zigbrains.project.toolchain.downloader
 
 import com.falsepattern.zigbrains.shared.Unarchiver
 import com.intellij.openapi.application.PathManager
+import com.intellij.openapi.progress.EmptyProgressIndicator
+import com.intellij.openapi.progress.ProgressManager
 import com.intellij.openapi.progress.coroutineToIndicator
 import com.intellij.openapi.util.io.FileUtil
 import com.intellij.openapi.util.io.toNioPathOrNull
-import com.intellij.platform.util.progress.reportProgress
+import com.intellij.platform.util.progress.*
-import com.intellij.platform.util.progress.reportSequentialProgress
-import com.intellij.platform.util.progress.withProgressText
 import com.intellij.util.asSafely
 import com.intellij.util.download.DownloadableFileService
 import com.intellij.util.io.createDirectories
@@ -38,6 +38,8 @@ import com.intellij.util.io.move
 import com.intellij.util.system.CpuArch
 import com.intellij.util.system.OS
 import com.intellij.util.text.SemVer
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
@@ -47,9 +49,14 @@ import kotlinx.serialization.json.JsonPrimitive
 import kotlinx.serialization.json.decodeFromJsonElement
 import kotlinx.serialization.json.decodeFromStream
 import java.io.File
+import java.lang.IllegalStateException
 import java.nio.file.Files
 import java.nio.file.Path
+import java.util.*
+import kotlin.io.path.ExperimentalPathApi
+import kotlin.io.path.deleteRecursively
 import kotlin.io.path.isDirectory
+import kotlin.io.path.name
 
 @JvmRecord
 data class ZigVersionInfo(
@@ -60,62 +67,105 @@ data class ZigVersionInfo(
     val src: Tarball?,
     val dist: Tarball
 ) {
-    suspend fun downloadAndUnpack(into: Path): Boolean {
+    @Throws(Exception::class)
-        return reportProgress { reporter ->
+    suspend fun downloadAndUnpack(into: Path) {
-            try {
+        reportProgress { reporter ->
             into.createDirectories()
-            } catch (e: Exception) {
+            val tarball = downloadTarball(dist, into, reporter)
-                return@reportProgress false
+            unpackTarball(tarball, into, reporter)
+            tarball.delete()
+            flattenDownloadDir(into, reporter)
         }
+    }
+
+    companion object {
+        @OptIn(ExperimentalSerializationApi::class)
+        suspend fun downloadVersionList(): List<ZigVersionInfo> {
+            return withContext(Dispatchers.IO) {
+                val service = DownloadableFileService.getInstance()
+                val tempFile = FileUtil.createTempFile(tempPluginDir, "index", ".json", false, false)
+                val desc = service.createFileDescription("https://ziglang.org/download/index.json", tempFile.name)
+                val downloader = service.createDownloader(listOf(desc), "Zig version information")
+                val downloadResults = coroutineToIndicator {
+                    downloader.download(tempPluginDir)
+                }
+                if (downloadResults.isEmpty())
+                    return@withContext emptyList()
+                val index = downloadResults[0].first
+                val info = index.inputStream().use { Json.decodeFromStream<JsonObject>(it) }
+                index.delete()
+                return@withContext info.mapNotNull { (version, data) -> parseVersion(version, data) }.toList()
+            }
+        }
+    }
+
+    @JvmRecord
+    @Serializable
+    data class Tarball(val tarball: String, val shasum: String, val size: Int)
+}
+
+private suspend fun downloadTarball(dist: ZigVersionInfo.Tarball, into: Path, reporter: ProgressReporter): Path {
+    return withContext(Dispatchers.IO) {
         val service = DownloadableFileService.getInstance()
         val fileName = dist.tarball.substringAfterLast('/')
         val tempFile = FileUtil.createTempFile(into.toFile(), "tarball", fileName, false, false)
         val desc = service.createFileDescription(dist.tarball, tempFile.name)
-            val downloader = service.createDownloader(listOf(desc), "Zig version information downloading")
+        val downloader = service.createDownloader(listOf(desc), "Zig tarball")
         val downloadResults = reporter.sizedStep(100) {
             coroutineToIndicator {
                 downloader.download(into.toFile())
             }
         }
         if (downloadResults.isEmpty())
-                return@reportProgress false
+            throw IllegalStateException("No file downloaded")
-            val tarball = downloadResults[0].first
+        return@withContext downloadResults[0].first.toPath()
-            reporter.indeterminateStep("Extracting tarball") {
+    }
-                Unarchiver.unarchive(tarball.toPath(), into)
+}
-                tarball.delete()
+
-                val contents = Files.newDirectoryStream(into).use { it.toList() }
+private suspend fun flattenDownloadDir(dir: Path, reporter: ProgressReporter) {
+    withContext(Dispatchers.IO) {
+        val contents = Files.newDirectoryStream(dir).use { it.toList() }
         if (contents.size == 1 && contents[0].isDirectory()) {
             val src = contents[0]
+            reporter.indeterminateStep {
+                coroutineToIndicator {
+                    val indicator = ProgressManager.getInstance().progressIndicator ?: EmptyProgressIndicator()
+                    indicator.isIndeterminate = true
+                    indicator.text = "Flattening directory"
                     Files.newDirectoryStream(src).use { stream ->
                         stream.forEach {
-                            it.move(into.resolve(src.relativize(it)))
+                            indicator.text2 = it.name
+                            it.move(dir.resolve(src.relativize(it)))
+                        }
+                    }
                 }
             }
             src.delete()
         }
     }
-            return@reportProgress true
+}
-        }
-    }
-    companion object {
-        @OptIn(ExperimentalSerializationApi::class)
-        suspend fun downloadVersionList(): List<ZigVersionInfo> {
-            val service = DownloadableFileService.getInstance()
-            val tempFile = FileUtil.createTempFile(tempPluginDir, "index", ".json", false, false)
-            val desc = service.createFileDescription("https://ziglang.org/download/index.json", tempFile.name)
-            val downloader = service.createDownloader(listOf(desc), "Zig version information downloading")
-            val downloadResults = coroutineToIndicator {
-                downloader.download(tempPluginDir)
-            }
-            if (downloadResults.isEmpty())
-                return emptyList()
-            val index = downloadResults[0].first
-            val info = index.inputStream().use { Json.decodeFromStream<JsonObject>(it) }
-            index.delete()
-            return info.mapNotNull { (version, data) -> parseVersion(version, data) }.toList()
-        }
 
-        private fun parseVersion(versionKey: String, data: JsonElement): ZigVersionInfo? {
+@OptIn(ExperimentalPathApi::class)
+private suspend fun unpackTarball(tarball: Path, into: Path, reporter: ProgressReporter) {
+    withContext(Dispatchers.IO) {
+        try {
+            reporter.indeterminateStep {
+                coroutineToIndicator {
+                    Unarchiver.unarchive(tarball, into)
+                }
+            }
+        } catch (e: Throwable) {
+            tarball.delete()
+            val contents = Files.newDirectoryStream(into).use { it.toList() }
+            if (contents.size == 1 && contents[0].isDirectory()) {
+                contents[0].deleteRecursively()
+            }
+            throw e
+        }
+    }
+}
+
+private fun parseVersion(versionKey: String, data: JsonElement): ZigVersionInfo? {
     if (data !is JsonObject)
         return null
 
@@ -125,16 +175,16 @@ data class ZigVersionInfo(
                   ?: return null
     val date = data["date"]?.asSafely<JsonPrimitive>()?.content ?: ""
     val docs = data["docs"]?.asSafely<JsonPrimitive>()?.content ?: ""
-            val notes = data["notes"]?.asSafely<JsonPrimitive>()?.content?: ""
+    val notes = data["notes"]?.asSafely<JsonPrimitive>()?.content ?: ""
-            val src = data["src"]?.asSafely<JsonObject>()?.let { Json.decodeFromJsonElement<Tarball>(it) }
+    val src = data["src"]?.asSafely<JsonObject>()?.let { Json.decodeFromJsonElement<ZigVersionInfo.Tarball>(it) }
     val dist = data.firstNotNullOfOrNull { (dist, tb) -> getTarballIfCompatible(dist, tb) }
                ?: return null
 
 
     return ZigVersionInfo(version, date, docs, notes, src, dist)
-        }
+}
 
-        private fun getTarballIfCompatible(dist: String, tb: JsonElement): Tarball? {
+private fun getTarballIfCompatible(dist: String, tb: JsonElement): ZigVersionInfo.Tarball? {
     if (!dist.contains('-'))
         return null
     val (arch, os) = dist.split('-', limit = 2)
@@ -155,13 +205,7 @@ data class ZigVersionInfo(
     if (theArch != CpuArch.CURRENT || theOS != OS.CURRENT) {
         return null
     }
-            return Json.decodeFromJsonElement<Tarball>(tb)
+    return Json.decodeFromJsonElement<ZigVersionInfo.Tarball>(tb)
-        }
-    }
 }
 
-@JvmRecord
-@Serializable
-data class Tarball(val tarball: String, val shasum: String, val size: Int)
-
 private val tempPluginDir get(): File = PathManager.getTempPath().toNioPathOrNull()!!.resolve("zigbrains").toFile()

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/local/LocalZigToolchain.kt

@@ -65,8 +65,8 @@ data class LocalZigToolchain(val location: Path, val std: Path? = null, override
             }
         }
 
-        fun tryFromPathString(pathStr: String): LocalZigToolchain? {
+        fun tryFromPathString(pathStr: String?): LocalZigToolchain? {
-            return pathStr.toNioPathOrNull()?.let(::tryFromPath)
+            return pathStr?.ifBlank { null }?.toNioPathOrNull()?.let(::tryFromPath)
         }
 
         fun tryFromPath(path: Path): LocalZigToolchain? {

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ui/ZigToolchainComboBoxHandler.kt

@@ -0,0 +1,39 @@
+/*
+ * This file is part of ZigBrains.
+ *
+ * Copyright (C) 2023-2025 FalsePattern
+ * All Rights Reserved
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * ZigBrains 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, only version 3 of the License.
+ *
+ * ZigBrains 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with ZigBrains. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.falsepattern.zigbrains.project.toolchain.ui
+
+import com.falsepattern.zigbrains.project.toolchain.ZigToolchainListService
+import com.falsepattern.zigbrains.project.toolchain.downloader.Downloader
+import com.falsepattern.zigbrains.project.toolchain.downloader.LocalSelector
+import com.intellij.util.concurrency.annotations.RequiresBackgroundThread
+import java.awt.Component
+import java.util.UUID
+
+internal object ZigToolchainComboBoxHandler {
+    @RequiresBackgroundThread
+    suspend fun onItemSelected(context: Component, elem: TCListElem.Pseudo): UUID? = when(elem) {
+        is TCListElem.Toolchain.Suggested -> elem.toolchain
+        is TCListElem.Download -> Downloader.downloadToolchain(context)
+        is TCListElem.FromDisk -> LocalSelector.browseFromDisk(context)
+    }?.let { ZigToolchainListService.getInstance().registerNewToolchain(it) }
+}

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ui/ZigToolchainEditor.kt

@@ -25,15 +25,33 @@ package com.falsepattern.zigbrains.project.toolchain.ui
 import com.falsepattern.zigbrains.project.toolchain.ZigToolchainListService
 import com.falsepattern.zigbrains.project.toolchain.ZigToolchainService
 import com.falsepattern.zigbrains.project.toolchain.base.suggestZigToolchains
+import com.falsepattern.zigbrains.shared.coroutine.asContextElement
+import com.falsepattern.zigbrains.shared.coroutine.launchWithEDT
+import com.falsepattern.zigbrains.shared.coroutine.withEDTContext
+import com.falsepattern.zigbrains.shared.zigCoroutineScope
 import com.intellij.openapi.Disposable
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.application.EDT
 import com.intellij.openapi.options.Configurable
+import com.intellij.openapi.options.ShowSettingsUtil
+import com.intellij.openapi.options.newEditor.SettingsDialog
+import com.intellij.openapi.options.newEditor.SettingsTreeView
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.ui.DialogWrapper
 import com.intellij.openapi.util.Disposer
 import com.intellij.openapi.util.NlsContexts
 import com.intellij.ui.dsl.builder.AlignX
 import com.intellij.ui.dsl.builder.Panel
 import com.intellij.ui.dsl.builder.panel
+import com.intellij.util.concurrency.annotations.RequiresEdt
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.withContext
 import java.awt.event.ItemEvent
+import java.lang.reflect.Field
+import java.lang.reflect.Method
+import java.util.UUID
 import javax.swing.JComponent
 import kotlin.collections.addAll
 
@@ -74,7 +92,7 @@ class ZigToolchainEditor(private val project: Project): Configurable {
 
     inner class UI(): Disposable, ZigToolchainListService.ToolchainListChangeListener {
         private val toolchainBox: TCComboBox
-        private var oldSelectionIndex: Int = 0
+        private var selectOnNextReload: UUID? = null
         private val model: TCModel
         init {
             model = TCModel(getModelList())
@@ -89,27 +107,44 @@ class ZigToolchainEditor(private val project: Project): Configurable {
                 return
             }
             val item = event.item
-            if (item !is TCListElem) {
+            if (item !is TCListElem.Pseudo)
-                toolchainBox.selectedIndex = oldSelectionIndex
                 return
-            }
+            zigCoroutineScope.launch(toolchainBox.asContextElement()) {
-            when(item) {
+                val uuid = ZigToolchainComboBoxHandler.onItemSelected(toolchainBox, item)
-                is TCListElem.None, is TCListElem.Toolchain.Actual -> {
+                withEDTContext(toolchainBox.asContextElement()) {
-                    oldSelectionIndex = toolchainBox.selectedIndex
+                    applyUUIDNowOrOnReload(uuid)
-                }
-                else -> {
-                    toolchainBox.selectedIndex = oldSelectionIndex
                 }
             }
         }
 
-        override fun toolchainListChanged() {
+        override suspend fun toolchainListChanged() {
-            val selected = model.selected
+            withContext(Dispatchers.EDT + toolchainBox.asContextElement()) {
                 val list = getModelList()
                 model.updateContents(list)
+                val onReload = selectOnNextReload
+                selectOnNextReload = null
+                if (onReload != null) {
+                    val element = list.firstOrNull { when(it) {
+                        is TCListElem.Toolchain.Actual -> it.uuid == onReload
+                        else -> false
+                    } }
+                    model.selectedItem = element
+                    return@withContext
+                }
+                val selected = model.selected
                 if (selected != null && list.contains(selected)) {
                     model.selectedItem = selected
-            } else {
+                    return@withContext
+                }
+                if (selected is TCListElem.Toolchain.Actual) {
+                    val uuid = selected.uuid
+                    val element = list.firstOrNull { when(it) {
+                        is TCListElem.Toolchain.Actual -> it.uuid == uuid
+                        else -> false
+                    } }
+                    model.selectedItem = element
+                    return@withContext
+                }
                 model.selectedItem = TCListElem.None
             }
         }
@@ -117,6 +152,35 @@ class ZigToolchainEditor(private val project: Project): Configurable {
         fun attach(p: Panel): Unit = with(p) {
             row("Toolchain") {
                 cell(toolchainBox).resizableColumn().align(AlignX.FILL)
+                button("Funny") { e ->
+                    zigCoroutineScope.launchWithEDT(toolchainBox.asContextElement()) {
+                        val config = ZigToolchainListEditor()
+                        var inited = false
+                        var selectedUUID: UUID? = toolchainBox.selectedToolchain
+                        config.addItemSelectedListener {
+                            if (inited) {
+                                selectedUUID = it
+                            }
+                        }
+                        val apply = ShowSettingsUtil.getInstance().editConfigurable(DialogWrapper.findInstance(toolchainBox)?.contentPane, config) {
+                            config.selectNodeInTree(selectedUUID)
+                            inited = true
+                        }
+                        if (apply) {
+                            applyUUIDNowOrOnReload(selectedUUID)
+                        }
+                    }
+                }
+            }
+        }
+
+        @RequiresEdt
+        private fun applyUUIDNowOrOnReload(uuid: UUID?) {
+            toolchainBox.selectedToolchain = uuid
+            if (uuid != null && toolchainBox.selectedToolchain == null) {
+                selectOnNextReload = uuid
+            } else {
+                selectOnNextReload = null
             }
         }
 
@@ -130,9 +194,10 @@ class ZigToolchainEditor(private val project: Project): Configurable {
 
         fun reset() {
             toolchainBox.selectedToolchain = ZigToolchainService.getInstance(project).toolchainUUID
-            oldSelectionIndex = toolchainBox.selectedIndex
         }
 
+
+
         override fun dispose() {
             ZigToolchainListService.getInstance().removeChangeListener(this)
         }

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ui/ZigToolchainListEditor.kt

@@ -22,27 +22,56 @@
 
 package com.falsepattern.zigbrains.project.toolchain.ui
 
+import com.falsepattern.zigbrains.Icons
 import com.falsepattern.zigbrains.ZigBrainsBundle
 import com.falsepattern.zigbrains.project.toolchain.ZigToolchainListService
 import com.falsepattern.zigbrains.project.toolchain.base.ZigToolchain
 import com.falsepattern.zigbrains.project.toolchain.base.createNamedConfigurable
 import com.falsepattern.zigbrains.project.toolchain.base.suggestZigToolchains
+import com.falsepattern.zigbrains.project.toolchain.downloader.Downloader
+import com.falsepattern.zigbrains.project.toolchain.local.LocalZigToolchain
 import com.falsepattern.zigbrains.shared.coroutine.asContextElement
+import com.falsepattern.zigbrains.shared.coroutine.withEDTContext
 import com.falsepattern.zigbrains.shared.zigCoroutineScope
+import com.intellij.icons.AllIcons
 import com.intellij.openapi.actionSystem.AnAction
 import com.intellij.openapi.actionSystem.AnActionEvent
 import com.intellij.openapi.actionSystem.Presentation
+import com.intellij.openapi.application.EDT
+import com.intellij.openapi.components.Service
+import com.intellij.openapi.fileChooser.FileChooserDescriptorFactory
 import com.intellij.openapi.project.DumbAwareAction
+import com.intellij.openapi.ui.DialogBuilder
 import com.intellij.openapi.ui.MasterDetailsComponent
+import com.intellij.openapi.ui.NamedConfigurable
+import com.intellij.openapi.util.Disposer
+import com.intellij.openapi.util.io.toNioPathOrNull
+import com.intellij.ui.DocumentAdapter
+import com.intellij.ui.components.JBLabel
+import com.intellij.ui.components.textFieldWithBrowseButton
+import com.intellij.ui.dsl.builder.AlignX
+import com.intellij.ui.dsl.builder.panel
+import com.intellij.util.Consumer
 import com.intellij.util.IconUtil
+import com.intellij.util.asSafely
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.util.UUID
 import javax.swing.JComponent
+import javax.swing.event.DocumentEvent
 import javax.swing.tree.DefaultTreeModel
 
-class ZigToolchainListEditor() : MasterDetailsComponent(), ZigToolchainListService.ToolchainListChangeListener {
+class ZigToolchainListEditor : MasterDetailsComponent(), ZigToolchainListService.ToolchainListChangeListener {
     private var isTreeInitialized = false
     private var registered: Boolean = false
+    private var itemSelectedListeners = ArrayList<Consumer<UUID?>>()
+
+    fun addItemSelectedListener(c: Consumer<UUID?>) {
+        synchronized(itemSelectedListeners) {
+            itemSelectedListeners.add(c)
+        }
+    }
 
     override fun createComponent(): JComponent {
         if (!isTreeInitialized) {
@@ -72,6 +101,14 @@ class ZigToolchainListEditor() : MasterDetailsComponent(), ZigToolchainListServi
         return listOf(add, MyDeleteAction())
     }
 
+    override fun updateSelection(configurable: NamedConfigurable<*>?) {
+        super.updateSelection(configurable)
+        val uuid = configurable?.editableObject as? UUID
+        synchronized(itemSelectedListeners) {
+            itemSelectedListeners.forEach { it.consume(uuid) }
+        }
+    }
+
     override fun onItemDeleted(item: Any?) {
         if (item is UUID) {
             ZigToolchainListService.getInstance().removeToolchain(item)
@@ -80,18 +117,15 @@ class ZigToolchainListEditor() : MasterDetailsComponent(), ZigToolchainListServi
     }
 
     private fun onItemSelected(elem: TCListElem) {
-        when (elem) {
+        if (elem !is TCListElem.Pseudo)
-            is TCListElem.Toolchain -> {
+            return
-                val uuid = UUID.randomUUID()
-                ZigToolchainListService.getInstance().setToolchain(uuid, elem.toolchain)
-            }
-            is TCListElem.Download -> {
         zigCoroutineScope.launch(myWholePanel.asContextElement()) {
-                    Downloader.downloadToolchain(myWholePanel)
+            val uuid = ZigToolchainComboBoxHandler.onItemSelected(myWholePanel, elem)
+            if (uuid != null) {
+                withEDTContext(myWholePanel.asContextElement()) {
+                    selectNodeInTree(uuid)
                 }
             }
-            is TCListElem.FromDisk -> {}
-            is TCListElem.None -> {}
         }
     }
 
@@ -110,11 +144,15 @@ class ZigToolchainListEditor() : MasterDetailsComponent(), ZigToolchainListServi
     }
 
     private fun reloadTree() {
+        val currentSelection = selectedObject?.asSafely<UUID>()
         myRoot.removeAllChildren()
         ZigToolchainListService.getInstance().toolchains.forEach { (uuid, toolchain) ->
             addToolchain(uuid, toolchain)
         }
         (myTree.model as DefaultTreeModel).reload()
+        currentSelection?.let {
+            selectNodeInTree(it)
+        }
     }
 
     override fun disposeUIResources() {
@@ -124,7 +162,9 @@ class ZigToolchainListEditor() : MasterDetailsComponent(), ZigToolchainListServi
         }
     }
 
-    override fun toolchainListChanged() {
+    override suspend fun toolchainListChanged() {
+        withEDTContext(myWholePanel.asContextElement()) {
             reloadTree()
         }
+    }
 }

core/src/main/kotlin/com/falsepattern/zigbrains/project/toolchain/ui/elements.kt

@@ -27,20 +27,20 @@ import java.util.UUID
 
 
 internal sealed interface TCListElemIn
-
 internal sealed interface TCListElem : TCListElemIn {
+    sealed interface Pseudo: TCListElem
     sealed interface Toolchain : TCListElem {
         val toolchain: ZigToolchain
 
         @JvmRecord
-        data class Suggested(override val toolchain: ZigToolchain): Toolchain
+        data class Suggested(override val toolchain: ZigToolchain): Toolchain, Pseudo
 
         @JvmRecord
         data class Actual(val uuid: UUID, override val toolchain: ZigToolchain): Toolchain
     }
     object None: TCListElem
-    object Download : TCListElem
+    object Download : TCListElem, Pseudo
-    object FromDisk : TCListElem
+    object FromDisk : TCListElem, Pseudo
 
     companion object {
         val fetchGroup get() = listOf(Download, FromDisk)

core/src/main/kotlin/com/falsepattern/zigbrains/shared/Unarchiver.kt

@@ -22,8 +22,9 @@
 
 package com.falsepattern.zigbrains.shared
 
+import com.intellij.openapi.progress.EmptyProgressIndicator
+import com.intellij.openapi.progress.ProgressManager
 import com.intellij.util.io.Decompressor
-import kotlinx.coroutines.runInterruptible
 import java.io.IOException
 import java.nio.file.Path
 import kotlin.io.path.name
@@ -51,16 +52,22 @@ enum class Unarchiver {
 
     companion object {
         @Throws(IOException::class)
-        suspend fun unarchive(archivePath: Path, dst: Path, prefix: String? = null) {
+        fun unarchive(archivePath: Path, dst: Path, prefix: String? = null) {
-            runInterruptible {
             val unarchiver = entries.find { archivePath.name.endsWith(it.extension) }
                              ?: error("Unexpected archive type: $archivePath")
             val dec = unarchiver.createDecompressor(archivePath)
+            val indicator = ProgressManager.getInstance().progressIndicator ?: EmptyProgressIndicator()
+            indicator.isIndeterminate = true
+            indicator.text = "Extracting archive"
+            dec.filter {
+                indicator.text2 = it
+                indicator.checkCanceled()
+                true
+            }
             if (prefix != null) {
                 dec.removePrefixPath(prefix)
             }
             dec.extract(dst)
         }
     }
-    }
 }

core/src/main/kotlin/com/falsepattern/zigbrains/shared/coroutine/CoroutinesUtil.kt

@@ -63,7 +63,10 @@ suspend inline fun <T> runInterruptibleEDT(context: CoroutineContext, noinline t
 }
 
 fun CoroutineScope.launchWithEDT(state: ModalityState, block: suspend CoroutineScope.() -> Unit): Job {
-    return launch(Dispatchers.EDT + state.asContextElement(), block = block)
+    return launchWithEDT(state.asContextElement(), block = block)
+}
+fun CoroutineScope.launchWithEDT(context: CoroutineContext, block: suspend CoroutineScope.() -> Unit): Job {
+    return launch(Dispatchers.EDT + context, block = block)
 }
 
 fun Component.asContextElement(): CoroutineContext {