[git] remove the custom action group for the "Edit Commit Message" dialog toolbar

Use the "Vcs.MessageActionGroup" group in the "Edit Commit Message" dialog and hide unavailable LLM actions based on the context.

GitOrigin-RevId: 658acd9e85c98f4c0de91af3a9b9547cf96e3476

platform/vcs-impl/api-dump-unreviewed.txt

@@ -7643,6 +7643,7 @@ c:com.intellij.openapi.vcs.ui.CommitMessage
 - <init>(com.intellij.openapi.project.Project):V
 - <init>(com.intellij.openapi.project.Project,Z,Z,Z):V
 - <init>(com.intellij.openapi.project.Project,Z,Z,Z,java.lang.String):V
+- createToolbar(Z):javax.swing.JComponent
 - dispose():V
 - focus():V
 - getComment():java.lang.String

platform/vcs-impl/src/com/intellij/openapi/vcs/ui/CommitMessage.java

@@ -172,7 +172,7 @@ public class CommitMessage extends JPanel implements Disposable, DataProvider, C
   }
 
   @NotNull
-  private JComponent createToolbar(boolean horizontal) {
+  public JComponent createToolbar(boolean horizontal) {
     ActionToolbar toolbar = ActionManager.getInstance().createActionToolbar("CommitMessage", getToolbarActions(), horizontal);
     toolbar.setReservePlaceAutoPopupIcon(false);
     toolbar.getComponent().setBorder(createEmptyBorder());

plugins/git4idea/resources/META-INF/plugin.xml

@@ -51,9 +51,6 @@
     <action id="Git.Revert.In.Log" class="git4idea.revert.GitRevertAction"/>
     <action id="Git.Uncommit" class="git4idea.reset.GitUncommitAction"/>
     <action id="Git.Reword.Commit" class="git4idea.rebase.GitRewordAction"/>
-    <group id="Git.Reword.ToolbarActions">
-      <reference ref="Vcs.ShowMessageHistory" />
-    </group>
     <action id="Git.Squash.Commits" class="git4idea.rebase.log.squash.GitSquashLogAction"/>
     <action id="Git.Drop.Commits" class="git4idea.rebase.log.drop.GitDropLogAction"/>
     <action id="Git.Rename.Local.Branch" class="git4idea.ui.branch.dashboard.BranchesDashboardActions$RenameLocalBranch"/>

plugins/git4idea/src/git4idea/rebase/log/GitNewCommitMessageActionDialog.kt

@@ -1,8 +1,6 @@
 // Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
 package git4idea.rebase.log
 
-import com.intellij.openapi.actionSystem.ActionGroup
-import com.intellij.openapi.actionSystem.ActionManager
 import com.intellij.openapi.ui.DialogWrapper
 import com.intellij.openapi.ui.ValidationInfo
 import com.intellij.openapi.util.Disposer
@@ -10,7 +8,6 @@ import com.intellij.openapi.vcs.VcsConfiguration
 import com.intellij.openapi.vcs.ui.CommitMessage
 import com.intellij.ui.dsl.builder.Align
 import com.intellij.ui.dsl.builder.panel
-import com.intellij.util.ui.JBDimension
 import com.intellij.util.ui.JBUI
 import com.intellij.vcs.log.VcsLogDataKeys
 import com.intellij.vcs.log.ui.VcsLogInternalDataKeys
@@ -18,8 +15,6 @@ import git4idea.findProtectedRemoteBranch
 import git4idea.i18n.GitBundle
 import git4idea.rebase.log.GitCommitEditingActionBase.Companion.findContainingBranches
 import org.jetbrains.annotations.Nls
-import java.awt.Dimension
-import javax.swing.BorderFactory
 import javax.swing.JComponent
 
 internal class GitNewCommitMessageActionDialog<T : GitCommitEditingActionBase.MultipleCommitEditingData>(
@@ -71,7 +66,7 @@ internal class GitNewCommitMessageActionDialog<T : GitCommitEditingActionBase.Mu
         label(dialogLabel)
           .resizableColumn()
           .align(Align.FILL)
-        cell(createToolbar())
+        cell(commitEditor.createToolbar(true))
       }
       row {
         cell(commitEditor)
@@ -84,15 +79,6 @@ internal class GitNewCommitMessageActionDialog<T : GitCommitEditingActionBase.Mu
     }
   }
 
-  private fun createToolbar(): JComponent {
-    val actionGroup = ActionManager.getInstance().getAction("Git.Reword.ToolbarActions") as ActionGroup
-    val toolbar = ActionManager.getInstance().createActionToolbar("GitNewCommitMessageActionDialog", actionGroup, true)
-    toolbar.setReservePlaceAutoPopupIcon(false)
-    toolbar.getComponent().setBorder(BorderFactory.createEmptyBorder())
-    toolbar.setTargetComponent(commitEditor)
-    return toolbar.getComponent()
-  }
-
   override fun getPreferredFocusedComponent() = commitEditor.editorField
 
   override fun getDimensionServiceKey() = "Git.Rebase.Log.Action.NewCommitMessage.Dialog"