[lvcs] extract local history isEnabled API (IJPL-161713)

GitOrigin-RevId: 18a6bbdf87ff7b1919fdd745870820c5fa4c1826

platform/lvcs-api/api-dump.txt

@@ -27,6 +27,7 @@ a:com.intellij.history.LocalHistory
 - <init>():V
 - a:getByteContent(com.intellij.openapi.vfs.VirtualFile,com.intellij.history.FileRevisionTimestampComparator):B[]
 - sf:getInstance():com.intellij.history.LocalHistory
+- a:isEnabled():Z
 - a:isUnderControl(com.intellij.openapi.vfs.VirtualFile):Z
 - a:putEventLabel(com.intellij.openapi.project.Project,java.lang.String,com.intellij.history.ActivityId):com.intellij.history.Label
 - f:putSystemLabel(com.intellij.openapi.project.Project,java.lang.String):com.intellij.history.Label

platform/lvcs-api/src/com/intellij/history/LocalHistory.kt

@@ -1,4 +1,4 @@
-// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.history
 
 import com.intellij.openapi.application.ApplicationManager
@@ -37,6 +37,12 @@ import org.jetbrains.annotations.ApiStatus
  * @see [ActivityId]
  */
 abstract class LocalHistory {
+
+  /**
+   * Is Local History enabled for all projects.
+   */
+  abstract val isEnabled: Boolean
+
   /**
    * Starts an action in the local history with the given name and [ActivityId] to indicate the start of file changes.
    * Call [LocalHistoryAction.finish] after the changes were performed.
@@ -120,6 +126,8 @@ abstract class LocalHistory {
   abstract fun isUnderControl(file: VirtualFile): Boolean
 
   private class Dummy : LocalHistory() {
+    override val isEnabled: Boolean = true
+
     override fun startAction(name: @NlsContexts.Label String?, activityId: ActivityId?): LocalHistoryAction = LocalHistoryAction.NULL
     override fun putEventLabel(project: Project, name: String, activityId: ActivityId): Label = Label.NULL_INSTANCE
     override fun putSystemLabel(project: Project, name: @NlsContexts.Label String, color: Int): Label = Label.NULL_INSTANCE

platform/lvcs-impl/src/com/intellij/history/integration/LocalHistoryImpl.kt

@@ -49,8 +49,10 @@ class LocalHistoryImpl(private val coroutineScope: CoroutineScope) : LocalHistor
 
   private var daysToKeep = getInt(DAYS_TO_KEEP)
 
-  var isDisabled: Boolean = false
-    private set
+  override val isEnabled: Boolean
+    get() = !isDisabled
+
+  private var isDisabled: Boolean = false
 
   var facade: LocalHistoryFacade? = null
     private set

platform/lvcs-impl/src/com/intellij/history/integration/ui/actions/LocalHistoryAction.java

@@ -2,6 +2,7 @@
 
 package com.intellij.history.integration.ui.actions;
 
+import com.intellij.history.LocalHistory;
 import com.intellij.history.core.LocalHistoryFacade;
 import com.intellij.history.integration.IdeaGateway;
 import com.intellij.history.integration.LocalHistoryImpl;
@@ -19,7 +20,7 @@ import org.jetbrains.annotations.Nullable;
 public abstract class LocalHistoryAction extends AnAction implements DumbAware {
   @Override
   public void update(@NotNull AnActionEvent e) {
-    if (LocalHistoryImpl.getInstanceImpl().isDisabled()) {
+    if (!LocalHistory.getInstance().isEnabled()) {
       e.getPresentation().setEnabledAndVisible(false);
       return;
     }

platform/xdebugger-impl/testSrc/com/intellij/xdebugger/impl/hotswap/SourceFileChangesCollectorImplTest.kt

@@ -1,11 +1,7 @@
 // Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package com.intellij.xdebugger.impl.hotswap
 
-import com.intellij.history.ActivityId
-import com.intellij.history.FileRevisionTimestampComparator
-import com.intellij.history.Label
-import com.intellij.history.LocalHistory
-import com.intellij.history.LocalHistoryAction
+import com.intellij.history.*
 import com.intellij.openapi.command.writeCommandAction
 import com.intellij.openapi.editor.Document
 import com.intellij.openapi.project.Project
@@ -142,6 +138,8 @@ private class MockListener(private val scope: CoroutineScope, private val channe
 }
 
 private class MockLocalHistory(val bytes: ByteArray) : LocalHistory() {
+  override val isEnabled: Boolean = true
+
   override fun getByteContent(file: VirtualFile, condition: FileRevisionTimestampComparator): ByteArray? = bytes
   override fun startAction(name: @NlsContexts.Label String?, activityId: ActivityId?): LocalHistoryAction = LocalHistoryAction.NULL
   override fun putEventLabel(project: Project, name: String, activityId: ActivityId): Label = Label.NULL_INSTANCE