Signal-Android/src/org/thoughtcrime/securesms/components/emoji/EmojiEditText.java

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package org.thoughtcrime.securesms.components.emoji;
import android.content.Context;
import android.support.v7.widget.AppCompatEditText;
import android.util.AttributeSet;
public class EmojiEditText extends AppCompatEditText {
public EmojiEditText(Context context) {
super(context);
init();
}
public EmojiEditText(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public EmojiEditText(Context context, AttributeSet attrs,
int defStyleAttr)
{
super(context, attrs, defStyleAttr);
init();
}
private void init() {
setTransformationMethod(new EmojiTransformationMethod());
}
public void insertEmoji(int codePoint) {
final char[] chars = Character.toChars(codePoint);
final String text = new String(chars);
final int start = getSelectionStart();
final int end = getSelectionEnd();
getText().replace(Math.min(start, end), Math.max(start, end), text, 0, text.length());
setSelection(end + chars.length);
}
}