/* * Copyright 2016 nekocode * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package cn.nekocode.emojix; import android.text.Editable; import android.text.SpannableString; import android.text.TextUtils; import android.text.TextWatcher; import android.text.style.DynamicDrawableSpan; import android.widget.EditText; import android.widget.TextView; /** * @author nekocode ([email protected]) */ class EmojixTextWatcher implements TextWatcher { private TextView textView; private int start = -1; private int count = -1; public EmojixTextWatcher(TextView textView) { this.textView = textView; SpannableString s = new SpannableString(textView.getText()); if (!TextUtils.isEmpty(s)) { float textSize = textView.getTextSize(); EmojiconHandler.addEmojis(textView.getContext(), s, (int) textSize, DynamicDrawableSpan.ALIGN_BASELINE, (int) textSize, 0, -1); textView.setText(s, TextView.BufferType.EDITABLE); if (textView instanceof EditText) { EditText editText = (EditText) textView; editText.setSelection(s.length()); } } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { if (this.start == -2) return; if (this.start == -1 && count > 0) { // When text is added this.start = start; this.count = count; } } @Override public void afterTextChanged(Editable s) { if (start >= 0) { float textSize = textView.getTextSize(); int pos = start; start = -2; EmojiconHandler.addEmojis(textView.getContext(), s, (int) textSize, DynamicDrawableSpan.ALIGN_BASELINE, (int) textSize, pos, count); start = -1; } } }