close #44, add "Save as" to the editor

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

@@ -10,6 +10,7 @@ import android.view.Menu
 import android.view.MenuItem
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.Utils
+import com.simplemobiletools.gallery.dialogs.SaveAsDialog
 import com.simplemobiletools.gallery.extensions.toast
 import com.theartofdev.edmodo.cropper.CropImageView
 import kotlinx.android.synthetic.main.activity_edit.*
@@ -20,6 +21,8 @@ import java.io.OutputStream
 
 class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener {
     val TAG: String = EditActivity::class.java.simpleName
+
+    var overrideOriginal = false
     lateinit var uri: Uri
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -54,6 +57,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         return when (item.itemId) {
             R.id.save -> {
+                overrideOriginal = true
                 crop_image_view.getCroppedImageAsync()
                 true
             }
@@ -70,17 +74,38 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     }
 
     private fun saveAs() {
-
+        overrideOriginal = false
+        crop_image_view.getCroppedImageAsync()
     }
 
     override fun onCropImageComplete(view: CropImageView, result: CropImageView.CropResult) {
         if (result.error == null) {
             if (uri.scheme == "file") {
-                saveBitmapToFile(result.bitmap, uri.path)
+                if (overrideOriginal)
+                    saveBitmapToFile(result.bitmap, uri.path)
+                else {
+                    SaveAsDialog(this, uri.path, object : SaveAsDialog.OnSaveAsListener {
+                        override fun onSaveAsSuccess(filename: String) {
+                            val parent = File(uri.path).parent
+                            val path = File(parent, filename).absolutePath
+                            saveBitmapToFile(result.bitmap, path)
+                        }
+                    })
+                }
             } else if (uri.scheme == "content") {
                 val newPath = Utils.getRealPathFromURI(applicationContext, uri) ?: ""
                 if (!newPath.isEmpty()) {
-                    saveBitmapToFile(result.bitmap, newPath)
+                    if (overrideOriginal) {
+                        saveBitmapToFile(result.bitmap, newPath)
+                    } else {
+                        SaveAsDialog(this, newPath, object : SaveAsDialog.OnSaveAsListener {
+                            override fun onSaveAsSuccess(filename: String) {
+                                val parent = File(uri.path).parent
+                                val path = File(parent, filename).absolutePath
+                                saveBitmapToFile(result.bitmap, path)
+                            }
+                        })
+                    }
                 } else {
                     toast(R.string.image_editing_failed)
                     finish()
@@ -96,7 +121,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
     private fun saveBitmapToFile(bitmap: Bitmap, path: String) {
         val file = File(path)
-        if (!file.exists()) {
+        if (overrideOriginal && !file.exists()) {
             toast(R.string.error_saving_file)
             finish()
             return
@@ -108,7 +133,10 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
                 if (Utils.isShowingWritePermissions(this, file))
                     return
 
-                val document = Utils.getFileDocument(this, path)
+                var document = Utils.getFileDocument(this, path)
+                if (!file.exists()) {
+                    document = document.createFile("", file.name)
+                }
                 out = contentResolver.openOutputStream(document.uri)
             } else {
                 out = FileOutputStream(file)
@@ -117,7 +145,7 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
             bitmap.compress(getCompressionFormat(file), 90, out)
             setResult(Activity.RESULT_OK, intent)
         } catch (e: Exception) {
-            Log.e(TAG, "Crop compressing failed $e")
+            Log.e(TAG, "Crop compressing failed $path $e")
             toast(R.string.image_editing_failed)
             finish()
         } finally {
@@ -130,7 +158,12 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
 
         MediaScannerConnection.scanFile(applicationContext, arrayOf(path), null, { path: String, uri: Uri ->
             setResult(Activity.RESULT_OK, intent)
-            finish()
+            runOnUiThread {
+                toast(R.string.file_saved)
+            }
+
+            if (overrideOriginal)
+                finish()
         })
     }
 

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

@@ -43,7 +43,7 @@ class RenameFileDialog(val activity: Activity, val file: File, val listener: OnR
                 val extension = view.file_extension.value
 
                 if (fileName.isEmpty() || extension.isEmpty()) {
-                    context.toast(R.string.rename_file_empty)
+                    context.toast(R.string.filename_cannot_be_empty)
                     return@setOnClickListener
                 }
 

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

@@ -0,0 +1,51 @@
+package com.simplemobiletools.gallery.dialogs
+
+import android.app.Activity
+import android.support.v7.app.AlertDialog
+import android.view.LayoutInflater
+import android.view.WindowManager
+import com.simplemobiletools.filepicker.extensions.getFilenameFromPath
+import com.simplemobiletools.gallery.R
+import com.simplemobiletools.gallery.extensions.isNameValid
+import com.simplemobiletools.gallery.extensions.toast
+import com.simplemobiletools.gallery.extensions.value
+import kotlinx.android.synthetic.main.rename_file.view.*
+
+class SaveAsDialog(val activity: Activity, val path: String, val listener: OnSaveAsListener) {
+
+    init {
+        val context = activity
+        val view = LayoutInflater.from(context).inflate(R.layout.dialog_save_as, null)
+        view.file_name.setText(path.getFilenameFromPath())
+
+        AlertDialog.Builder(context)
+                .setTitle(context.resources.getString(R.string.save_as))
+                .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
+
+                if (filename.isEmpty()) {
+                    context.toast(R.string.filename_cannot_be_empty)
+                    return@setOnClickListener
+                }
+
+                if (!filename.isNameValid()) {
+                    context.toast(R.string.filename_invalid_characters)
+                    return@setOnClickListener
+                }
+
+                listener.onSaveAsSuccess(filename)
+                dismiss()
+            })
+        }
+    }
+
+    interface OnSaveAsListener {
+        fun onSaveAsSuccess(filename: String)
+    }
+}

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

@@ -0,0 +1,9 @@
+package com.simplemobiletools.gallery.extensions
+
+import java.util.regex.Pattern
+
+fun String.isNameValid(): Boolean {
+    val pattern = Pattern.compile("^[-_.A-Za-z0-9()#& ]+$")
+    val matcher = pattern.matcher(this)
+    return matcher.matches()
+}