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      1 /*
      2 * Copyright 2013 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 *     http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License.
     15 */
     16 /*
     17  * Copyright 2013 The Android Open Source Project
     18  *
     19  * Licensed under the Apache License, Version 2.0 (the "License");
     20  * you may not use this file except in compliance with the License.
     21  * You may obtain a copy of the License at
     22  *
     23  *     http://www.apache.org/licenses/LICENSE-2.0
     24  *
     25  * Unless required by applicable law or agreed to in writing, software
     26  * distributed under the License is distributed on an "AS IS" BASIS,
     27  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     28  * See the License for the specific language governing permissions and
     29  * limitations under the License.
     30  */
     31 
     32 package com.example.android.common.logger;
     33 
     34 import android.graphics.Typeface;
     35 import android.os.Bundle;
     36 import android.support.v4.app.Fragment;
     37 import android.text.Editable;
     38 import android.text.TextWatcher;
     39 import android.view.Gravity;
     40 import android.view.LayoutInflater;
     41 import android.view.View;
     42 import android.view.ViewGroup;
     43 import android.widget.ScrollView;
     44 
     45 /**
     46  * Simple fraggment which contains a LogView and uses is to output log data it receives
     47  * through the LogNode interface.
     48  */
     49 public class LogFragment extends Fragment {
     50 
     51     private LogView mLogView;
     52     private ScrollView mScrollView;
     53 
     54     public LogFragment() {}
     55 
     56     public View inflateViews() {
     57         mScrollView = new ScrollView(getActivity());
     58         ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
     59                 ViewGroup.LayoutParams.MATCH_PARENT,
     60                 ViewGroup.LayoutParams.MATCH_PARENT);
     61         mScrollView.setLayoutParams(scrollParams);
     62 
     63         mLogView = new LogView(getActivity());
     64         ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
     65         logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
     66         mLogView.setLayoutParams(logParams);
     67         mLogView.setClickable(true);
     68         mLogView.setFocusable(true);
     69         mLogView.setTypeface(Typeface.MONOSPACE);
     70 
     71         // Want to set padding as 16 dips, setPadding takes pixels.  Hooray math!
     72         int paddingDips = 16;
     73         double scale = getResources().getDisplayMetrics().density;
     74         int paddingPixels = (int) ((paddingDips * (scale)) + .5);
     75         mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
     76         mLogView.setCompoundDrawablePadding(paddingPixels);
     77 
     78         mLogView.setGravity(Gravity.BOTTOM);
     79         mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
     80 
     81         mScrollView.addView(mLogView);
     82         return mScrollView;
     83     }
     84 
     85     @Override
     86     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     87                              Bundle savedInstanceState) {
     88 
     89         View result = inflateViews();
     90 
     91         mLogView.addTextChangedListener(new TextWatcher() {
     92             @Override
     93             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
     94 
     95             @Override
     96             public void onTextChanged(CharSequence s, int start, int before, int count) {}
     97 
     98             @Override
     99             public void afterTextChanged(Editable s) {
    100                 mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
    101             }
    102         });
    103         return result;
    104     }
    105 
    106     public LogView getLogView() {
    107         return mLogView;
    108     }
    109 }