[UI/Event] Add Sync text to manual event dialog.

app/src/main/java/pl/szczodrzynski/edziennik/utils/TextInputKeyboardEdit.kt

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2019-11-22.
+ */
+
+package pl.szczodrzynski.edziennik.utils
+
+import android.content.Context
+import android.graphics.Rect
+import android.util.AttributeSet
+import android.view.KeyEvent
+import android.view.KeyEvent.KEYCODE_BACK
+import androidx.annotation.NonNull
+import com.google.android.material.textfield.TextInputEditText
+
+class TextInputKeyboardEdit : TextInputEditText {
+
+    /**
+     * Keyboard Listener
+     */
+    internal var listener: KeyboardListener? = null
+
+    constructor(context: Context) : super(context)
+
+    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
+
+    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int) : super(context, attrs, defStyleAttr)
+
+    override fun onFocusChanged(focused: Boolean, direction: Int, previouslyFocusedRect: Rect?) {
+        super.onFocusChanged(focused, direction, previouslyFocusedRect)
+        if (listener != null)
+            listener!!.onStateChanged(this, true)
+    }
+
+    override fun onKeyPreIme(keyCode: Int, @NonNull event: KeyEvent): Boolean {
+        if (event.keyCode == KEYCODE_BACK && event.action == KeyEvent.ACTION_UP) {
+            if (listener != null)
+                listener!!.onStateChanged(this, false)
+
+            // Hide cursor
+            isFocusable = false
+
+            // Set EditText to be focusable again
+            isFocusable = true
+            isFocusableInTouchMode = true
+        }
+        return super.onKeyPreIme(keyCode, event)
+    }
+
+    fun setOnKeyboardListener(listener: KeyboardListener) {
+        this.listener = listener
+    }
+
+    interface KeyboardListener {
+        fun onStateChanged(keyboardEditText: TextInputKeyboardEdit, showing: Boolean)
+    }
+}