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BasicNetworking / src / com.example.android.common.logger /

LogFragment.java

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/*
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* Copyright 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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*     http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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 * Copyright 2013 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 *     http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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package com.example.android.common.logger;
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import android.graphics.Typeface;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.text.Editable;
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import android.text.TextWatcher;
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import android.view.Gravity;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ScrollView;
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/**
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 * Simple fraggment which contains a LogView and uses is to output log data it receives
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 * through the LogNode interface.
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 */
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public class LogFragment extends Fragment {
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    private LogView mLogView;
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    private ScrollView mScrollView;
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    public LogFragment() {}
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    public View inflateViews() {
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        mScrollView = new ScrollView(getActivity());
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        ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
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                ViewGroup.LayoutParams.MATCH_PARENT,
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                ViewGroup.LayoutParams.MATCH_PARENT);
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        mScrollView.setLayoutParams(scrollParams);
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        mLogView = new LogView(getActivity());
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        ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
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        logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
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        mLogView.setLayoutParams(logParams);
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        mLogView.setClickable(true);
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        mLogView.setFocusable(true);
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        mLogView.setTypeface(Typeface.MONOSPACE);
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        // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
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        int paddingDips = 16;
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        double scale = getResources().getDisplayMetrics().density;
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        int paddingPixels = (int) ((paddingDips * (scale)) + .5);
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        mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
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        mLogView.setCompoundDrawablePadding(paddingPixels);
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        mLogView.setGravity(Gravity.BOTTOM);
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        mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
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        mScrollView.addView(mLogView);
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        return mScrollView;
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    }
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    @Override
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    public View onCreateView(LayoutInflater inflater, ViewGroup container,
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                             Bundle savedInstanceState) {
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        View result = inflateViews();
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        mLogView.addTextChangedListener(new TextWatcher() {
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            @Override
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            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
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            @Override
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            public void onTextChanged(CharSequence s, int start, int before, int count) {}
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            @Override
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            public void afterTextChanged(Editable s) {
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                mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
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            }
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        });
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        return result;
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    }
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    public LogView getLogView() {
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        return mLogView;
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    }
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}