input/gestures/BasicGestureDetect/BasicGestureDetect/src/main/java/com/example/android/basicgesturedetect/LogFragment.java

// Copyright 2013 Google Inc. All Rights Reserved.

package com.example.android.basicgesturedetect;

import com.example.android.common.logger.LogView;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.TextWatcher;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ScrollView;

/**
 * Simple fraggment which contains a LogView and uses is to output log data it receives
 * through the LogNode interface.
 */
public class LogFragment extends Fragment {

    private LogView mLogView;

    public LogFragment() {}

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View result = inflater.inflate(R.layout.log_fragment, container, false);

        mLogView = (LogView) result.findViewById(R.id.sample_output);

        // Wire up so when the text changes, the view scrolls down.
        final ScrollView scrollView =
                ((ScrollView) result.findViewById(R.id.log_scroll));

        mLogView.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {}

            @Override
            public void afterTextChanged(Editable s) {
                scrollView.fullScroll(ScrollView.FOCUS_DOWN);
            }
        });

        return result;
    }

    public LogView getLogView() {
        return mLogView;
    }
}