move RenameItemDialog in a separate file

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/RenameItemDialog.kt

@@ -0,0 +1,89 @@
+package com.simplemobiletools.gallery.dialogs
+
+import android.app.Activity
+import android.content.Intent
+import android.media.MediaScannerConnection
+import android.support.v7.app.AlertDialog
+import android.view.LayoutInflater
+import android.view.WindowManager
+import com.simplemobiletools.gallery.Config
+import com.simplemobiletools.gallery.Constants
+import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.Utils
+import com.simplemobiletools.gallery.extensions.toast
+import com.simplemobiletools.gallery.extensions.value
+import kotlinx.android.synthetic.main.rename_file.view.*
+import java.io.File
+
+class RenameItemDialog(val activity: Activity, val file: File, val listener: OnRenameItemListener) {
+
+    init {
+        val context = activity
+        val view = LayoutInflater.from(context).inflate(R.layout.rename_file, null)
+        val fullName = file.name
+        val dotAt = fullName.lastIndexOf(".")
+        var name = fullName
+
+        if (dotAt > 0) {
+            name = fullName.substring(0, dotAt)
+            val extension = fullName.substring(dotAt + 1)
+            view.file_extension.setText(extension)
+        }
+
+        view.file_name.setText(name)
+        view.file_path.text = "${file.parent}/"
+
+        AlertDialog.Builder(context)
+                .setTitle(context.resources.getString(R.string.rename_file))
+                .setView(view)
+                .setPositiveButton(R.string.ok, null)
+                .setNegativeButton(R.string.cancel, null)
+                .create().apply {
+            window!!.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE)
+            show()
+            getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener({
+                val fileName = view.file_name.value
+                val extension = view.file_extension.value
+
+                if (fileName.isEmpty() || extension.isEmpty()) {
+                    context.toast(R.string.rename_file_empty)
+                    return@setOnClickListener
+                }
+
+                val newFile = File(file.parent, "$fileName.$extension")
+
+                if (Utils.needsStupidWritePermissions(context, file.absolutePath)) {
+                    if (!file.canWrite() && Config.newInstance(context).treeUri.isEmpty()) {
+                        WritePermissionDialog(activity, object : WritePermissionDialog.OnWritePermissionListener {
+                            override fun onConfirmed() {
+                                val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+                                activity.startActivityForResult(intent, Constants.OPEN_DOCUMENT_TREE)
+                            }
+                        })
+                        return@setOnClickListener
+                    }
+                    val document = Utils.Companion.getFileDocument(context, file.absolutePath)
+                    if (document.canWrite())
+                        document.renameTo(newFile.name)
+                    sendSuccess(file, newFile)
+                    dismiss()
+                } else if (file.renameTo(newFile)) {
+                    sendSuccess(file, newFile)
+                    dismiss()
+                } else {
+                    context.toast(R.string.rename_file_error)
+                }
+            })
+        }
+    }
+
+    private fun sendSuccess(currFile: File, newFile: File) {
+        val changedFiles = arrayOf(currFile.absolutePath, newFile.absolutePath)
+        MediaScannerConnection.scanFile(activity.applicationContext, changedFiles, null, null)
+        listener.onRenameSuccess(newFile)
+    }
+
+    interface OnRenameItemListener {
+        fun onRenameSuccess(newFile: File)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/editText.kt

@@ -0,0 +1,5 @@
+package com.simplemobiletools.gallery.extensions
+
+import android.widget.EditText
+
+val EditText.value: String get() = this.text.toString().trim()