Add some helper methods for extended functionality

Author: hitherejoe

buffertextinputlayout/src/main/java/org/buffer/android/buffertextinputlayout/BufferTextInputLayout.java

@@ -141,6 +141,7 @@ public class BufferTextInputLayout extends LinearLayout {
 
     private int charactersRemainingUntilCounterDisplay;
     private CounterMode counterMode;
+    private TextInputListener textInputListener;
 
     public BufferTextInputLayout(Context context) {
         this(context, null);
@@ -229,6 +230,28 @@ public void addView(View child, int index, final ViewGroup.LayoutParams params)
         }
     }
 
+    /**
+     * Manually update the enabled state of the input label
+     */
+    public void updateEnabledState(int contentLength) {
+        setCounterEnabled(contentLength >= (getCounterMaxLength() -
+                charactersRemainingUntilCounterDisplay));
+    }
+
+    /**
+     * Set a listener for when text changes in the edit text
+     */
+    public void setTextInputListener(TextInputListener textInputListener) {
+        this.textInputListener = textInputListener;
+    }
+
+    /**
+     * Manually set the counter length for the label
+     */
+    public void setCounterLength(int length) {
+        updateCounter(length);
+    }
+
     /**
      * Set the count value that the counter labvel should be hidden until.
      */
@@ -311,6 +334,7 @@ public void afterTextChanged(Editable s) {
                 if (counterEnabled) {
                     updateCounter(s.length());
                 }
+                if (textInputListener != null) textInputListener.onTextChanged(s.toString());
             }
 
             @Override

buffertextinputlayout/src/main/java/org/buffer/android/buffertextinputlayout/TextInputListener.java

@@ -0,0 +1,5 @@
+package org.buffer.android.buffertextinputlayout;
+
+public interface TextInputListener {
+    void onTextChanged(String text);
+}