Add optional Word Count to Note

- Setting included (default: deactived)
- Translation for en/de

refs #40

app/src/main/kotlin/com/simplemobiletools/notes/activities/SettingsActivity.kt

@@ -35,6 +35,7 @@ class SettingsActivity : SimpleActivity() {
         setupClickableLinks()
         setupMonospacedFont()
         setupShowKeyboard()
+        setupShowWordCount()
         setupFontSize()
         setupGravity()
         setupWidgetNote()
@@ -90,6 +91,14 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupShowWordCount() {
+        settings_show_word_count.isChecked = config.showWordCount
+        settings_show_word_count_holder.setOnClickListener {
+            settings_show_word_count.toggle()
+            config.showWordCount = settings_show_word_count.isChecked
+        }
+    }
+
     private fun setupFontSize() {
         settings_font_size.text = getFontSizeText()
         settings_font_size_holder.setOnClickListener {

app/src/main/kotlin/com/simplemobiletools/notes/fragments/NoteFragment.kt

@@ -3,6 +3,8 @@ package com.simplemobiletools.notes.fragments
 import android.graphics.Typeface
 import android.os.Bundle
 import android.support.v4.app.Fragment
+import android.text.Editable
+import android.text.TextWatcher
 import android.text.method.LinkMovementMethod
 import android.text.util.Linkify
 import android.util.TypedValue
@@ -95,6 +97,7 @@ class NoteFragment : Fragment() {
         super.onResume()
 
         val config = context!!.config
+
         view.notes_view.apply {
             typeface = if (config.monospacedFont) Typeface.MONOSPACE else Typeface.DEFAULT
 
@@ -113,10 +116,45 @@ class NoteFragment : Fragment() {
                 setSelection(if (config.placeCursorToEnd) text.length else 0)
             }
         }
+
+        if (config.showWordCount) {
+            view.notes_view.addTextChangedListener(textWatcher)
+            view.notes_counter.visibility = View.VISIBLE
+            setWordCounter(view.notes_view.text)
+        }
+        else {
+            view.notes_counter.visibility = View.GONE
+        }
     }
 
     override fun onPause() {
         super.onPause()
         saveText()
+
+        removeTextWatcher()
+    }
+
+    private fun removeTextWatcher() {
+        //Avoid memory leak
+        view.notes_view.removeTextChangedListener(textWatcher)
+    }
+
+    private fun setWordCounter(text: Editable) {
+        //Replace new lines with space
+        val wordArray = text.toString().replace("\n", " ").split(" ")
+        //Count only items which are not empty
+        notes_counter.text = wordArray.count { it.isNotEmpty() }.toString()
+    }
+
+    private var textWatcher: TextWatcher = object : TextWatcher {
+        override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {
+        }
+
+        override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {
+        }
+
+        override fun afterTextChanged(editable: Editable) {
+            setWordCounter(editable)
+        }
     }
 }

app/src/main/kotlin/com/simplemobiletools/notes/helpers/Config.kt

@@ -24,6 +24,10 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getBoolean(SHOW_KEYBOARD, true)
         set(showKeyboard) = prefs.edit().putBoolean(SHOW_KEYBOARD, showKeyboard).apply()
 
+    var showWordCount: Boolean
+        get() = prefs.getBoolean(SHOW_WORDCOUNT, false)
+        set(showWordCount) = prefs.edit().putBoolean(SHOW_WORDCOUNT, showWordCount).apply()
+
     var fontSize: Int
         get() = prefs.getInt(FONT_SIZE, FONT_SIZE_MEDIUM)
         set(size) = prefs.edit().putInt(FONT_SIZE, size).apply()

app/src/main/kotlin/com/simplemobiletools/notes/helpers/Constants.kt

@@ -10,6 +10,7 @@ val CLICKABLE_LINKS = "clickable_links"
 val WIDGET_NOTE_ID = "widget_note_id"
 val MONOSPACED_FONT = "monospaced_font"
 val SHOW_KEYBOARD = "show_keyboard"
+val SHOW_WORDCOUNT = "show_word_count"
 val FONT_SIZE = "font_size"
 val GRAVITY = "gravity"
 val CURSOR_PLACEMENT = "cursor_placement"