add a couple things related to file copying

app/src/main/java/com/simplemobiletools/gallery/Utils.kt

@@ -21,6 +21,7 @@ import android.webkit.MimeTypeMap
 import android.widget.Toast
 import com.simplemobiletools.filepicker.extensions.getSDCardPath
 import com.simplemobiletools.gallery.dialogs.WritePermissionDialog
+import com.simplemobiletools.gallery.extensions.scanFile
 import com.simplemobiletools.gallery.models.Medium
 import java.io.File
 
@@ -182,5 +183,9 @@ class Utils {
                 false
             }
         }
+
+        fun scanFiles(context: Context, paths: Array<String>) {
+            context.scanFile(paths)
+        }
     }
 }

app/src/main/java/com/simplemobiletools/gallery/activities/MediaActivity.java

@@ -167,7 +167,8 @@ public class MediaActivity extends SimpleActivity
                 rescanDirectory(files[i]);
             }
         }
-        MediaScannerConnection.scanFile(getApplicationContext(), paths, null, null);
+
+        Utils.Companion.scanFiles(getApplicationContext(), paths);
     }
 
     private void showSortingDialog() {

app/src/main/java/com/simplemobiletools/gallery/activities/ViewPagerActivity.java

@@ -151,6 +151,9 @@ public class ViewPagerActivity extends SimpleActivity
             case R.id.menu_set_as_wallpaper:
                 setAsWallpaper();
                 return true;
+            case R.id.menu_copy:
+                displayCopyDialog();
+                return true;
             case R.id.menu_open_with:
                 openWith();
                 return true;
@@ -181,6 +184,10 @@ public class ViewPagerActivity extends SimpleActivity
         adapter.updateItems(mPos);
     }
 
+    private void displayCopyDialog() {
+
+    }
+
     private void openEditor() {
         final Intent intent = new Intent(Intent.ACTION_EDIT);
         intent.setDataAndType(Uri.fromFile(getCurrentFile()), "image/*");

app/src/main/kotlin/com/simplemobiletools/gallery/activities/PickAlbumActivity.kt

@@ -7,6 +7,7 @@ import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.Utils
 import com.simplemobiletools.gallery.adapters.DirectoryAdapter
 import com.simplemobiletools.gallery.asynctasks.GetDirectoriesAsynctask
+import com.simplemobiletools.gallery.extensions.toast
 import com.simplemobiletools.gallery.models.Directory
 import kotlinx.android.synthetic.main.activity_main.*
 import java.util.*
@@ -27,7 +28,7 @@ class PickAlbumActivity : SimpleActivity(), AdapterView.OnItemClickListener, Get
         if (Utils.hasStoragePermission(applicationContext)) {
             getDirectories()
         } else {
-            Utils.showToast(applicationContext, R.string.no_permissions)
+            toast(R.string.no_permissions)
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/gallery/asynctasks/CopyTask.kt

@@ -0,0 +1,119 @@
+package com.simplemobiletools.gallery.asynctasks
+
+import android.content.Context
+import android.os.AsyncTask
+import android.support.v4.util.Pair
+import android.util.Log
+import com.simplemobiletools.gallery.Utils
+import java.io.*
+import java.lang.ref.WeakReference
+
+class CopyTask(listener: CopyTask.CopyListener, val context: Context) : AsyncTask<Pair<List<File>, File>, Void, Boolean>() {
+    private val TAG = CopyTask::class.java.simpleName
+    private var mListener: WeakReference<CopyListener>? = null
+    private var destinationDir: File? = null
+
+    init {
+        mListener = WeakReference(listener)
+    }
+
+    override fun doInBackground(vararg params: Pair<List<File>, File>): Boolean? {
+        val pair = params[0]
+        val files = pair.first
+        for (file in files) {
+            try {
+                destinationDir = File(pair.second, file.name)
+                copy(file, destinationDir!!)
+            } catch (e: Exception) {
+                Log.e(TAG, "copy " + e)
+                return false
+            }
+        }
+        return true
+    }
+
+    @Throws(Exception::class)
+    private fun copy(source: File, destination: File) {
+        if (source.isDirectory) {
+            copyDirectory(source, destination)
+        } else {
+            copyFile(source, destination)
+        }
+    }
+
+    private fun copyDirectory(source: File, destination: File) {
+        if (!destination.exists()) {
+            if (Utils.needsStupidWritePermissions(context, destination.absolutePath)) {
+                val document = Utils.getFileDocument(context, destination.absolutePath)
+                document.createDirectory(destination.name)
+            } else if (!destination.mkdirs()) {
+                throw IOException("Could not create dir " + destination.absolutePath)
+            }
+        }
+
+        val children = source.list()
+        for (child in children) {
+            val newFile = File(source, child)
+            if (Utils.needsStupidWritePermissions(context, destination.absolutePath)) {
+                if (newFile.isDirectory) {
+                    copyDirectory(newFile, File(destination, child))
+                } else {
+                    var document = Utils.getFileDocument(context, destination.absolutePath)
+                    document = document.createFile("", child)
+
+                    val inputStream = FileInputStream(newFile)
+                    val out = context.contentResolver.openOutputStream(document.uri)
+                    copyStream(inputStream, out)
+                }
+            } else {
+                copy(newFile, File(destination, child))
+            }
+        }
+    }
+
+    private fun copyFile(source: File, destination: File) {
+        val directory = destination.parentFile
+        if (!directory.exists() && !directory.mkdirs()) {
+            throw IOException("Could not create dir " + directory.absolutePath)
+        }
+
+        val inputStream = FileInputStream(source)
+        val out: OutputStream?
+        if (Utils.needsStupidWritePermissions(context, destination.absolutePath)) {
+            var document = Utils.getFileDocument(context, destination.absolutePath)
+            document = document.createFile("", destination.name)
+            out = context.contentResolver.openOutputStream(document.uri)
+        } else {
+            out = FileOutputStream(destination)
+        }
+
+        copyStream(inputStream, out)
+    }
+
+    private fun copyStream(inputStream: InputStream, out: OutputStream?) {
+        val buf = ByteArray(1024)
+        var len: Int
+        while (true) {
+            len = inputStream.read(buf)
+            if (len <= 0)
+                break
+            out?.write(buf, 0, len)
+        }
+    }
+
+    override fun onPostExecute(success: Boolean) {
+        val listener = mListener?.get() ?: return
+
+        if (success) {
+            listener.copySucceeded(destinationDir!!)
+        } else {
+            listener.copyFailed()
+        }
+    }
+
+    interface CopyListener {
+        fun copySucceeded(destinationDir: File)
+
+        fun copyFailed()
+    }
+}

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

@@ -0,0 +1,98 @@
+package com.simplemobiletools.gallery.dialogs
+
+import android.app.Activity
+import android.support.v4.util.Pair
+import android.support.v7.app.AlertDialog
+import android.view.LayoutInflater
+import android.view.WindowManager
+import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.Utils
+import com.simplemobiletools.gallery.asynctasks.CopyTask
+import com.simplemobiletools.gallery.extensions.scanFile
+import com.simplemobiletools.gallery.extensions.toast
+import com.simplemobiletools.gallery.extensions.value
+import kotlinx.android.synthetic.main.copy_item.view.*
+import java.io.File
+import java.util.*
+
+class CopyDialog(val activity: Activity, val files: List<File>, val path: String, val copyListener: CopyTask.CopyListener, val listener: OnCopyListener) {
+
+    init {
+        val context = activity
+        val view = LayoutInflater.from(context).inflate(R.layout.copy_item, null)
+        view.source.text = "${path.trimEnd('/')}/"
+
+        view.destination.setOnClickListener {
+
+        }
+
+        AlertDialog.Builder(context)
+                .setTitle(context.resources.getString(if (files.size == 1) R.string.copy_item else R.string.copy_items))
+                .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 destinationPath = view.destination.value
+                if (destinationPath == context.resources.getString(R.string.select_destination)) {
+                    context.toast(R.string.please_select_destination)
+                    return@setOnClickListener
+                }
+
+                if (view.source.text.trimEnd('/') == destinationPath.trimEnd('/')) {
+                    context.toast(R.string.source_and_destination_same)
+                    return@setOnClickListener
+                }
+
+                val destinationDir = File(destinationPath)
+                if (!destinationDir.exists()) {
+                    context.toast(R.string.invalid_destination)
+                    return@setOnClickListener
+                }
+
+                if (files.size == 1) {
+                    val newFile = File(files[0].path)
+                    if (File(destinationPath, newFile.name).exists()) {
+                        context.toast(R.string.already_exists)
+                        return@setOnClickListener
+                    }
+                }
+
+                if (Utils.isShowingWritePermissions(context, destinationDir)) {
+                    return@setOnClickListener
+                }
+
+                if (view.dialog_radio_group.checkedRadioButtonId == R.id.dialog_radio_copy) {
+                    context.toast(R.string.copying)
+                    val pair = Pair<List<File>, File>(files, destinationDir)
+                    CopyTask(copyListener, context).execute(pair)
+                    dismiss()
+                } else {
+                    if (Utils.isPathOnSD(context, view.source.value) && Utils.isPathOnSD(context, destinationPath)) {
+                        val paths = ArrayList<String>()
+                        for (f in files) {
+                            val destination = File(destinationDir, f.name)
+                            f.renameTo(destination)
+                            paths.add(destination.absolutePath)
+                        }
+
+                        context.scanFile(paths.toTypedArray())
+
+                        dismiss()
+                        listener.onSuccess()
+                    } else {
+                        val pair = Pair<List<File>, File>(files, destinationDir)
+                        CopyTask(copyListener, context).execute(pair)
+                        dismiss()
+                    }
+                }
+            })
+        }
+    }
+
+    interface OnCopyListener {
+        fun onSuccess()
+    }
+}

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

@@ -1,8 +1,11 @@
 package com.simplemobiletools.gallery.extensions
 
 import android.content.Context
+import android.media.MediaScannerConnection
 import android.widget.Toast
 
 fun Context.toast(msg: String, duration: Int = Toast.LENGTH_SHORT) = Toast.makeText(this, msg, duration).show()
 
 fun Context.toast(msgId: Int, duration: Int = Toast.LENGTH_SHORT) = Toast.makeText(this, resources.getString(msgId), duration).show()
+
+fun Context.scanFile(paths: Array<String>) = MediaScannerConnection.scanFile(this, paths, null, null)

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

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

app/src/main/res/layout/copy_item.xml

@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/dialog_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingLeft="@dimen/activity_margin"
+    android:paddingRight="@dimen/activity_margin"
+    android:paddingTop="@dimen/activity_margin">
+
+    <TextView
+        android:id="@+id/source_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/source"
+        android:textSize="@dimen/details_text_size"/>
+
+    <TextView
+        android:id="@+id/source"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/activity_margin"
+        android:layout_marginLeft="@dimen/activity_margin"
+        android:paddingRight="@dimen/small_padding"
+        android:paddingTop="@dimen/small_padding"
+        android:text="source"/>
+
+    <TextView
+        android:id="@+id/destination_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/destination"
+        android:textSize="@dimen/details_text_size"/>
+
+    <TextView
+        android:id="@+id/destination"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="@dimen/activity_margin"
+        android:layout_marginLeft="@dimen/activity_margin"
+        android:paddingBottom="@dimen/small_padding"
+        android:paddingRight="@dimen/small_padding"
+        android:paddingTop="@dimen/small_padding"
+        android:text="@string/select_destination"/>
+
+    <RadioGroup
+        android:id="@+id/dialog_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:checkedButton="@+id/dialog_radio_copy">
+
+        <RadioButton
+            android:id="@+id/dialog_radio_copy"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="@dimen/medium_padding"
+            android:text="@string/copy"/>
+
+        <RadioButton
+            android:id="@+id/dialog_radio_move"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/move"/>
+    </RadioGroup>
+</LinearLayout>

app/src/main/res/menu/viewpager_menu.xml

@@ -5,6 +5,10 @@
         android:id="@+id/menu_set_as_wallpaper"
         android:title="@string/set_as_wallpaper"
         app:showAsAction="never"/>
+    <item
+        android:id="@+id/menu_copy"
+        android:title="@string/copy_move"
+        app:showAsAction="never"/>
     <item
         android:id="@+id/menu_open_with"
         android:title="@string/open_with"

app/src/main/res/values-de/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">Kopieren</string>
+    <string name="move">Verschieben</string>
+    <string name="copy_move">Kopieren/Verschieben</string>
+    <string name="copy_item">Datei/Ordner kopieren</string>
+    <string name="copy_items">Dateien/Ordner kopieren</string>
+    <string name="source">Quelle</string>
+    <string name="destination">Ziel</string>
+    <string name="select_destination">Ziel auswählen</string>
+    <string name="invalid_destination">Konnte nicht an ausgewähltes Ziel schreiben</string>
+    <string name="please_select_destination">Bitte wähle ein Ziel</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Konnte die Datei nicht kopieren</string>
+    <string name="copying">Kopiere</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 Ordner gelöscht</item>

app/src/main/res/values-es/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Salvar como</string>
     <string name="file_saved">Archivo guardado con éxito</string>
+    <string name="copy">Copy</string>
+    <string name="move">Move</string>
+    <string name="copy_move">Copy/Move to</string>
+    <string name="copy_item">Copy item</string>
+    <string name="copy_items">Copy items</string>
+    <string name="source">Source</string>
+    <string name="destination">Destination</string>
+    <string name="select_destination">Select destination</string>
+    <string name="invalid_destination">Could not write to the selected destination</string>
+    <string name="please_select_destination">Please select a destination</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Could not copy the files</string>
+    <string name="copying">Copying</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 carpeta eliminada</item>

app/src/main/res/values-it/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">Copia</string>
+    <string name="move">Sposta</string>
+    <string name="copy_move">Copia/Sposta</string>
+    <string name="copy_item">Copia elemento</string>
+    <string name="copy_items">Copia elementi</string>
+    <string name="source">Fonte</string>
+    <string name="destination">Destinazione</string>
+    <string name="select_destination">Seleziona destinazione</string>
+    <string name="invalid_destination">Impossibile scrivere nella destinazione selezionata</string>
+    <string name="please_select_destination">Seleziona una destinazione</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Impossibile copiare i file</string>
+    <string name="copying">Copia in corso</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 cartella eliminata</item>

app/src/main/res/values-ja/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">コピー</string>
+    <string name="move">移動</string>
+    <string name="copy_move">Copy/Move to</string>
+    <string name="copy_item">アイテムをコピー</string>
+    <string name="copy_items">アイテムをコピー</string>
+    <string name="source">元</string>
+    <string name="destination">先</string>
+    <string name="select_destination">宛先を選択</string>
+    <string name="invalid_destination">選択した宛先に書き込みできませんでした</string>
+    <string name="please_select_destination">宛先を選択してください</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">ファイルをコピーできませんでした</string>
+    <string name="copying">コピー中</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 フォルダーを削除しました</item>

app/src/main/res/values-pt-rPT/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">Copiar</string>
+    <string name="move">Mover</string>
+    <string name="copy_move">Copiar/Mover</string>
+    <string name="copy_item">Copiar item</string>
+    <string name="copy_items">Copiar itens</string>
+    <string name="source">Origem</string>
+    <string name="destination">Destino</string>
+    <string name="select_destination">Selecionar destino</string>
+    <string name="invalid_destination">Não foi possível escrever no destino selecionado</string>
+    <string name="please_select_destination">Por favor selecione um destino</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Não foi possível copiar os ficheiros</string>
+    <string name="copying">A copiar</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 pasta eliminada</item>

app/src/main/res/values-sv/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">Kopiera</string>
+    <string name="move">Flytta</string>
+    <string name="copy_move">Copy/Move to</string>
+    <string name="copy_item">Kopiera objekt</string>
+    <string name="copy_items">Kopiera objekt</string>
+    <string name="source">Källa</string>
+    <string name="destination">Mål</string>
+    <string name="select_destination">Välj mål</string>
+    <string name="invalid_destination">Det gick inte att skriva till målet</string>
+    <string name="please_select_destination">Please select a destination</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Kunde inte kopiera filen</string>
+    <string name="copying">Kopierar</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 mapp borttagen</item>

app/src/main/res/values/dimens.xml

@@ -14,5 +14,6 @@
     <dimen name="undo_size">56dp</dimen>
     <dimen name="settings_padding">8dp</dimen>
 
+    <dimen name="details_text_size">12sp</dimen>
     <dimen name="normal_text_size">14sp</dimen>
 </resources>

app/src/main/res/values/strings.xml

@@ -40,6 +40,20 @@
     <string name="confirm_storage_access_text">Please choose the root folder of the SD card to grant write access on the next screen</string>
     <string name="save_as">Save as</string>
     <string name="file_saved">File saved successfully</string>
+    <string name="copy">Copy</string>
+    <string name="move">Move</string>
+    <string name="copy_move">Copy/Move to</string>
+    <string name="copy_item">Copy item</string>
+    <string name="copy_items">Copy items</string>
+    <string name="source">Source</string>
+    <string name="destination">Destination</string>
+    <string name="select_destination">Select destination</string>
+    <string name="invalid_destination">Could not write to the selected destination</string>
+    <string name="please_select_destination">Please select a destination</string>
+    <string name="source_and_destination_same">Source and destination cannot be the same</string>
+    <string name="copy_failed">Could not copy the files</string>
+    <string name="copying">Copying</string>
+    <string name="already_exists">A file with that name already exists</string>
 
     <plurals name="folders_deleted">
         <item quantity="one">1 folder deleted</item>