Java tutorial
/* * Copyright (C) 2014 Dominik Schrmann <dominik@dominikschuermann.de> * Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.sufficientlysecure.keychain.ui; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.ListFragment; import android.util.TypedValue; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.ImageView; import android.widget.TextView; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.operations.results.OperationResult; import org.sufficientlysecure.keychain.operations.results.OperationResult.LogEntryParcel; import org.sufficientlysecure.keychain.operations.results.OperationResult.LogLevel; import org.sufficientlysecure.keychain.operations.results.OperationResult.SubLogEntryParcel; import org.sufficientlysecure.keychain.provider.TemporaryFileProvider; import org.sufficientlysecure.keychain.ui.dialog.ShareLogDialogFragment; import org.sufficientlysecure.keychain.ui.util.FormattingUtils; import org.sufficientlysecure.keychain.ui.util.Notify; import org.sufficientlysecure.keychain.ui.util.Notify.Style; import java.io.IOException; import java.io.OutputStream; public class LogDisplayFragment extends ListFragment implements OnItemClickListener { LogAdapter mAdapter; OperationResult mResult; public static final String EXTRA_RESULT = "log"; protected int mTextColor; private Uri mLogTempFile; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mTextColor = FormattingUtils.getColorFromAttr(getActivity(), R.attr.colorText); setHasOptionsMenu(true); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); Intent intent = getActivity().getIntent(); if (intent == null) { getActivity().finish(); return; } if (savedInstanceState != null) { mResult = savedInstanceState.getParcelable(EXTRA_RESULT); } else { mResult = intent.getParcelableExtra(EXTRA_RESULT); } if (mResult == null) { getActivity().finish(); return; } mAdapter = new LogAdapter(getActivity(), mResult.getLog()); setListAdapter(mAdapter); getListView().setOnItemClickListener(this); getListView().setFastScrollEnabled(true); getListView().setDividerHeight(0); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // need to parcel this again, logs are only single-instance parcelable outState.putParcelable(EXTRA_RESULT, mResult); } @Override public void onCreateOptionsMenu(final Menu menu, final MenuInflater inflater) { inflater.inflate(R.menu.log_display, menu); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_log_display_export_log: shareLog(); break; } return super.onOptionsItemSelected(item); } private void shareLog() { Activity activity = getActivity(); if (activity == null) { return; } String log = mResult.getLog().getPrintableOperationLog(getResources(), 0); // if there is no log temp file yet, create one if (mLogTempFile == null) { mLogTempFile = TemporaryFileProvider.createFile(getActivity(), "openkeychain_log.txt", "text/plain"); try { OutputStream outputStream = activity.getContentResolver().openOutputStream(mLogTempFile); outputStream.write(log.getBytes()); } catch (IOException e) { Notify.create(activity, R.string.error_log_share_internal, Style.ERROR).show(); return; } } ShareLogDialogFragment shareLogDialog = ShareLogDialogFragment.newInstance(mLogTempFile); shareLogDialog.show(getActivity().getSupportFragmentManager(), "shareLogDialog"); } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { LogEntryParcel parcel = mAdapter.getItem(position); if (!(parcel instanceof SubLogEntryParcel)) { return; } Intent intent = new Intent(getActivity(), LogDisplayActivity.class); intent.putExtra(LogDisplayFragment.EXTRA_RESULT, ((SubLogEntryParcel) parcel).getSubResult()); startActivity(intent); } private class LogAdapter extends ArrayAdapter<LogEntryParcel> { private LayoutInflater mInflater; private int dipFactor; public LogAdapter(Context context, OperationResult.OperationLog log) { super(context, R.layout.log_display_item, log.toList()); mInflater = LayoutInflater.from(getContext()); dipFactor = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, (float) 8, getResources().getDisplayMetrics()); } private class ItemHolder { final View mSecond; final TextView mText, mSecondText; final ImageView mImg, mSecondImg, mSub; public ItemHolder(TextView text, ImageView image, ImageView sub, View second, TextView secondText, ImageView secondImg) { mText = text; mImg = image; mSub = sub; mSecond = second; mSecondText = secondText; mSecondImg = secondImg; } } // Check if convertView.setPadding is redundant @Override public View getView(int position, View convertView, ViewGroup parent) { LogEntryParcel entry = getItem(position); ItemHolder ih; if (convertView == null) { convertView = mInflater.inflate(R.layout.log_display_item, parent, false); ih = new ItemHolder((TextView) convertView.findViewById(R.id.log_text), (ImageView) convertView.findViewById(R.id.log_img), (ImageView) convertView.findViewById(R.id.log_sub), convertView.findViewById(R.id.log_second), (TextView) convertView.findViewById(R.id.log_second_text), (ImageView) convertView.findViewById(R.id.log_second_img)); convertView.setTag(ih); } else { ih = (ItemHolder) convertView.getTag(); } if (entry instanceof SubLogEntryParcel) { ih.mSub.setVisibility(View.VISIBLE); convertView.setClickable(false); convertView.setPadding((entry.mIndent) * dipFactor, 0, 0, 0); OperationResult result = ((SubLogEntryParcel) entry).getSubResult(); LogEntryParcel subEntry = result.getLog().getLast(); if (subEntry != null) { ih.mSecond.setVisibility(View.VISIBLE); // special case: first parameter may be a quantity if (subEntry.mParameters != null && subEntry.mParameters.length > 0 && subEntry.mParameters[0] instanceof Integer) { ih.mSecondText.setText(getResources().getQuantityString(subEntry.mType.getMsgId(), (Integer) subEntry.mParameters[0], subEntry.mParameters)); } else { ih.mSecondText .setText(getResources().getString(subEntry.mType.getMsgId(), subEntry.mParameters)); } ih.mSecondText.setTextColor(subEntry.mType.mLevel == LogLevel.DEBUG ? Color.GRAY : mTextColor); switch (subEntry.mType.mLevel) { case DEBUG: ih.mSecondImg.setBackgroundColor(Color.GRAY); break; case INFO: ih.mSecondImg.setBackgroundColor(mTextColor); break; case WARN: ih.mSecondImg.setBackgroundColor(getResources().getColor(R.color.android_orange_light)); break; case ERROR: ih.mSecondImg.setBackgroundColor(getResources().getColor(R.color.android_red_light)); break; case START: ih.mSecondImg.setBackgroundColor(mTextColor); break; case OK: ih.mSecondImg.setBackgroundColor(getResources().getColor(R.color.android_green_light)); break; case CANCELLED: ih.mSecondImg.setBackgroundColor(getResources().getColor(R.color.android_red_light)); break; } } else { ih.mSecond.setVisibility(View.GONE); } } else { ih.mSub.setVisibility(View.GONE); ih.mSecond.setVisibility(View.GONE); convertView.setClickable(true); } // special case: first parameter may be a quantity if (entry.mParameters != null && entry.mParameters.length > 0 && entry.mParameters[0] instanceof Integer) { ih.mText.setText(getResources().getQuantityString(entry.mType.getMsgId(), (Integer) entry.mParameters[0], entry.mParameters)); } else { ih.mText.setText(getResources().getString(entry.mType.getMsgId(), entry.mParameters)); } convertView.setPadding((entry.mIndent) * dipFactor, 0, 0, 0); ih.mText.setTextColor(entry.mType.mLevel == LogLevel.DEBUG ? Color.GRAY : mTextColor); switch (entry.mType.mLevel) { case DEBUG: ih.mImg.setBackgroundColor(Color.GRAY); break; case INFO: ih.mImg.setBackgroundColor(mTextColor); break; case WARN: ih.mImg.setBackgroundColor(getResources().getColor(R.color.android_orange_light)); break; case ERROR: ih.mImg.setBackgroundColor(getResources().getColor(R.color.android_red_light)); break; case START: ih.mImg.setBackgroundColor(mTextColor); break; case OK: ih.mImg.setBackgroundColor(getResources().getColor(R.color.android_green_light)); break; case CANCELLED: ih.mImg.setBackgroundColor(getResources().getColor(R.color.android_red_light)); break; } return convertView; } } }