Port Signal's emoji implementation to Briar

Add functionality to save and restore recently used Emojis

Update emoji and add new categories based on AOSP's XML file

briar-android/src/org/briarproject/android/view/TextInputView.java

@@ -0,0 +1,171 @@
+package org.briarproject.android.view;
+
+import android.content.Context;
+import android.os.IBinder;
+import android.support.annotation.Nullable;
+import android.support.annotation.StringRes;
+import android.support.annotation.UiThread;
+import android.util.AttributeSet;
+import android.view.KeyEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+
+import org.briarproject.R;
+import org.thoughtcrime.securesms.components.KeyboardAwareRelativeLayout;
+import org.thoughtcrime.securesms.components.emoji.EmojiDrawer;
+import org.thoughtcrime.securesms.components.emoji.EmojiDrawer.EmojiEventListener;
+import org.thoughtcrime.securesms.components.emoji.EmojiEditText;
+import org.thoughtcrime.securesms.components.emoji.EmojiToggle;
+
+import java.util.logging.Logger;
+
+import static android.content.Context.INPUT_METHOD_SERVICE;
+
+@UiThread
+public class TextInputView extends KeyboardAwareRelativeLayout
+		implements EmojiEventListener {
+
+	private static final String TAG = TextInputView.class.getName();
+	private static final Logger LOG = Logger.getLogger(TAG);
+
+	private EmojiEditText editText;
+	private View sendButton;
+	private EmojiDrawer emojiDrawer;
+
+	private TextInputListener listener;
+
+	public TextInputView(Context context) {
+		this(context, null);
+	}
+
+	public TextInputView(Context context, @Nullable AttributeSet attrs) {
+		this(context, attrs, 0);
+	}
+
+	public TextInputView(Context context, @Nullable AttributeSet attrs,
+			int defStyleAttr) {
+		super(context, attrs, defStyleAttr);
+
+		LayoutInflater inflater = (LayoutInflater) context
+				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+		inflater.inflate(R.layout.text_input_view, this, true);
+
+		// find views
+		EmojiToggle emojiToggle = (EmojiToggle) findViewById(R.id.emoji_toggle);
+		editText = (EmojiEditText) findViewById(R.id.input_text);
+		emojiDrawer = (EmojiDrawer) findViewById(R.id.emoji_drawer);
+		sendButton = findViewById(R.id.btn_send);
+
+		emojiToggle.attach(emojiDrawer);
+		emojiToggle.setOnClickListener(new OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				onEmojiToggleClicked();
+			}
+		});
+		editText.setOnClickListener(new OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				showSoftKeyboard();
+			}
+		});
+		sendButton.setOnClickListener(new OnClickListener() {
+			@Override
+			public void onClick(View v) {
+				if (listener != null) {
+					listener.onSendClick(editText.getText().toString());
+					editText.setText("");
+				}
+			}
+		});
+		emojiDrawer.setEmojiEventListener(this);
+	}
+
+	@Override
+	public void onKeyEvent(KeyEvent keyEvent) {
+		editText.dispatchKeyEvent(keyEvent);
+	}
+
+	@Override
+	public void onEmojiSelected(String emoji) {
+		editText.insertEmoji(emoji);
+	}
+
+	private void onEmojiToggleClicked() {
+		if (isEmojiDrawerOpen()) {
+			showSoftKeyboard();
+		} else {
+			showEmojiDrawer();
+		}
+	}
+
+	public void setText(String text) {
+		editText.setText(text);
+	}
+
+	public void setHint(@StringRes int res) {
+		editText.setHint(res);
+	}
+
+	public void setSendButtonEnabled(boolean enabled) {
+		sendButton.setEnabled(enabled);
+	}
+
+	public void setListener(TextInputListener listener) {
+		this.listener = listener;
+	}
+
+	public interface TextInputListener {
+		void onSendClick(String text);
+	}
+
+	public void showSoftKeyboard() {
+		if (isKeyboardOpen()) return;
+
+		if (emojiDrawer.isShowing()) {
+			postOnKeyboardOpen(new Runnable() {
+				@Override
+				public void run() {
+					hideEmojiDrawer();
+				}
+			});
+		}
+		editText.post(new Runnable() {
+			@Override
+			public void run() {
+				editText.requestFocus();
+				Object o = getContext().getSystemService(INPUT_METHOD_SERVICE);
+				((InputMethodManager) o).showSoftInput(editText, 0);
+			}
+		});
+	}
+
+	public void hideSoftKeyboard() {
+		IBinder token = editText.getWindowToken();
+		Object o = getContext().getSystemService(INPUT_METHOD_SERVICE);
+		((InputMethodManager) o).hideSoftInputFromWindow(token, 0);
+	}
+
+	public void showEmojiDrawer() {
+		if (isKeyboardOpen()) {
+			postOnKeyboardClose(new Runnable() {
+				@Override public void run() {
+					emojiDrawer.show(getKeyboardHeight());
+				}
+			});
+			hideSoftKeyboard();
+		} else {
+			emojiDrawer.show(getKeyboardHeight());
+		}
+	}
+
+	public void hideEmojiDrawer() {
+		emojiDrawer.hide();
+	}
+
+	public boolean isEmojiDrawerOpen() {
+		return emojiDrawer.isShowing();
+	}
+
+}