183: Implement new API from git plugin.

That allows hide checkbox for additional java to kotlin renames if there isn't any converted files

#KT-26073 Fixed

idea/idea-git/src/org/jetbrains/kotlin/git/KotlinExplicitMovementProvider.kt.183

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.git
+
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.util.Couple
+import com.intellij.openapi.util.registry.Registry
+import com.intellij.openapi.vcs.FilePath
+import git4idea.checkin.GitCheckinExplicitMovementProvider
+import org.jetbrains.kotlin.idea.actions.pathBeforeJ2K
+import java.util.*
+
+class KotlinExplicitMovementProvider : GitCheckinExplicitMovementProvider() {
+    init {
+        Registry.get("git.explicit.commit.renames.prohibit.multiple.calls").setValue(false)
+    }
+
+    override fun isEnabled(project: Project): Boolean {
+        return true
+    }
+
+    override fun getDescription(): String {
+        return "Extra commit for .java > .kt renames"
+    }
+
+    override fun getCommitMessage(oldCommitMessage: String): String {
+        return "Rename .java to .kt"
+    }
+
+    override fun collectExplicitMovements(
+        project: Project,
+        beforePaths: List<FilePath>,
+        afterPaths: List<FilePath>
+    ): Collection<GitCheckinExplicitMovementProvider.Movement> {
+        val movedChanges = ArrayList<GitCheckinExplicitMovementProvider.Movement>()
+        for (after in afterPaths) {
+            val pathBeforeJ2K = after.virtualFile?.pathBeforeJ2K
+            if (pathBeforeJ2K != null) {
+                val before = beforePaths.firstOrNull { it.path == pathBeforeJ2K }
+                if (before != null) {
+                    movedChanges.add(GitCheckinExplicitMovementProvider.Movement(before, after))
+                }
+            }
+        }
+
+        return movedChanges
+    }
+
+    override fun afterMovementsCommitted(project: Project, movedPaths: MutableList<Couple<FilePath>>) {
+        movedPaths.forEach { it.second.virtualFile?.pathBeforeJ2K = null }
+    }
+}