Java tutorial
/* * Catroid: An on-device visual programming system for Android devices * Copyright (C) 2010-2016 The Catrobat Team * (<http://developer.catrobat.org/credits>) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * An additional term exception under section 7 of the GNU Affero * General Public License, version 3, is available at * http://developer.catrobat.org/license_additional_term * * 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.catrobat.catroid.ui; import android.app.ActionBar; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.PreferenceManager; import android.speech.RecognizerIntent; import android.support.v4.content.ContextCompat; import android.text.Spannable; import android.text.SpannableString; import android.text.style.ForegroundColorSpan; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import com.sothree.slidinguppanel.SlidingUpPanelLayout; import org.catrobat.catroid.R; import org.catrobat.catroid.common.Constants; import org.catrobat.catroid.common.ScratchProgramData; import org.catrobat.catroid.scratchconverter.Client; import org.catrobat.catroid.scratchconverter.ConversionManager; import org.catrobat.catroid.scratchconverter.ScratchConversionManager; import org.catrobat.catroid.scratchconverter.WebSocketClient; import org.catrobat.catroid.scratchconverter.protocol.WebSocketMessageListener; import org.catrobat.catroid.ui.fragment.ScratchConverterSlidingUpPanelFragment; import org.catrobat.catroid.ui.fragment.SearchScratchSearchProjectsListFragment; import org.catrobat.catroid.utils.ToastUtil; import org.catrobat.catroid.utils.Utils; import org.catrobat.catroid.web.ScratchDataFetcher; import org.catrobat.catroid.web.ServerCalls; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Locale; public class ScratchConverterActivity extends BaseActivity implements SlidingUpPanelLayout.PanelSlideListener { private static final String TAG = ScratchConverterActivity.class.getSimpleName(); // to avoid using singleton in fragment private static Client client = null; private static ScratchDataFetcher dataFetcher = ServerCalls.getInstance(); private SearchScratchSearchProjectsListFragment searchProjectsListFragment; private ScratchConverterSlidingUpPanelFragment converterSlidingUpPanelFragment; private SlidingUpPanelLayout slidingLayout; private ConversionManager conversionManager; // dependency-injection for testing with mock object public static void setDataFetcher(final ScratchDataFetcher fetcher) { dataFetcher = fetcher; } public static void setClient(final Client converterClient) { client = converterClient; } public ScratchConverterSlidingUpPanelFragment getConverterSlidingUpPanelFragment() { return converterSlidingUpPanelFragment; } public SearchScratchSearchProjectsListFragment getSearchProjectsListFragment() { return searchProjectsListFragment; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_scratch_converter); setUpActionBar(); setReturnByPressingBackButton(true); searchProjectsListFragment = (SearchScratchSearchProjectsListFragment) getFragmentManager() .findFragmentById(R.id.fragment_scratch_search_projects_list); searchProjectsListFragment.setDataFetcher(dataFetcher); converterSlidingUpPanelFragment = (ScratchConverterSlidingUpPanelFragment) getFragmentManager() .findFragmentById(R.id.fragment_scratch_converter_sliding_up_panel); SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); final long clientID = settings.getLong(Constants.SCRATCH_CONVERTER_CLIENT_ID_SHARED_PREFERENCE_NAME, Client.INVALID_CLIENT_ID); if (client == null) { client = new WebSocketClient(clientID, new WebSocketMessageListener()); } conversionManager = new ScratchConversionManager(this, client, false); conversionManager.setCurrentActivity(this); conversionManager.addGlobalDownloadCallback(converterSlidingUpPanelFragment); conversionManager.addBaseInfoViewListener(converterSlidingUpPanelFragment); conversionManager.addGlobalJobViewListener(converterSlidingUpPanelFragment); searchProjectsListFragment.setConversionManager(conversionManager); slidingLayout = (SlidingUpPanelLayout) findViewById(R.id.sliding_layout); slidingLayout.addPanelSlideListener(this); final int betaLabelColor = ContextCompat.getColor(this, R.color.beta_label_color); appendColoredBetaLabelToTitle(betaLabelColor); hideSlideUpPanelBar(); Log.i(TAG, "Scratch Converter Activity created"); } @Override protected void onStart() { super.onStart(); conversionManager.setCurrentActivity(this); if (!client.isAuthenticated()) { conversionManager.connectAndAuthenticate(); } } @Override protected void onDestroy() { super.onDestroy(); Log.d(TAG, "Destroyed: " + TAG); conversionManager.shutdown(); conversionManager.removeGlobalDownloadCallback(converterSlidingUpPanelFragment); conversionManager.removeBaseInfoViewListener(converterSlidingUpPanelFragment); conversionManager.removeGlobalJobViewListener(converterSlidingUpPanelFragment); client = null; } private void setUpActionBar() { final ActionBar actionBar = getActionBar(); actionBar.setTitle(R.string.title_activity_scratch_converter); actionBar.setHomeButtonEnabled(true); } private void appendColoredBetaLabelToTitle(final int color) { final String title = getString(R.string.title_activity_scratch_converter); final String beta = getString(R.string.beta).toUpperCase(Locale.getDefault()); final SpannableString spanTitle = new SpannableString(title + " " + beta); final int begin = title.length() + 1; final int end = begin + beta.length(); spanTitle.setSpan(new ForegroundColorSpan(color), begin, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); getActionBar().setTitle(spanTitle); } public void convertProjects(List<ScratchProgramData> programList) { final int numberOfJobsInProgress = conversionManager.getNumberOfJobsInProgress(); if (numberOfJobsInProgress + programList.size() > Constants.SCRATCH_CONVERTER_MAX_NUMBER_OF_JOBS_PER_CLIENT) { ToastUtil.showError(this, getResources().getQuantityString(R.plurals.error_cannot_convert_more_than_x_programs, Constants.SCRATCH_CONVERTER_MAX_NUMBER_OF_JOBS_PER_CLIENT, Constants.SCRATCH_CONVERTER_MAX_NUMBER_OF_JOBS_PER_CLIENT)); return; } int counter = 0; for (ScratchProgramData programData : programList) { if (Utils.isDeprecatedScratchProgram(programData)) { final Date releasePublishedDate = Utils.getScratchSecondReleasePublishedDate(); java.text.DateFormat dateFormat = android.text.format.DateFormat.getMediumDateFormat(this); ToastUtil.showError(this, getString(R.string.error_cannot_convert_deprecated_scratch_program_x_x, programData.getTitle(), dateFormat.format(releasePublishedDate))); continue; } if (conversionManager.isJobInProgress(programData.getId())) { continue; } Log.i(TAG, "Converting program: " + programData.getTitle()); conversionManager.convertProgram(programData.getId(), programData.getTitle(), programData.getImage(), false); counter++; } if (counter > 0) { ToastUtil.showSuccess(this, getResources().getQuantityString(R.plurals.scratch_conversion_scheduled_x, counter, counter)); } } public boolean isSlideUpPanelEmpty() { return !converterSlidingUpPanelFragment.hasVisibleJobs(); } public void showSlideUpPanelBar(final long delayMillis) { final int marginTop = getResources() .getDimensionPixelSize(R.dimen.scratch_project_search_list_view_margin_top); final int marginBottom = getResources() .getDimensionPixelSize(R.dimen.scratch_project_search_list_view_margin_bottom); if (delayMillis > 0) { slidingLayout.postDelayed(new Runnable() { public void run() { slidingLayout.setPanelState(SlidingUpPanelLayout.PanelState.COLLAPSED); searchProjectsListFragment.setSearchResultsListViewMargin(0, marginTop, 0, marginBottom); } }, delayMillis); } else { slidingLayout.setPanelState(SlidingUpPanelLayout.PanelState.COLLAPSED); searchProjectsListFragment.setSearchResultsListViewMargin(0, marginTop, 0, marginBottom); } } public void hideSlideUpPanelBar() { int marginTop = getResources().getDimensionPixelSize(R.dimen.scratch_project_search_list_view_margin_top); searchProjectsListFragment.setSearchResultsListViewMargin(0, marginTop, 0, 0); slidingLayout.setPanelState(SlidingUpPanelLayout.PanelState.HIDDEN); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.menu_scratch_projects, menu); return super.onCreateOptionsMenu(menu); } @Override public boolean onPrepareOptionsMenu(Menu menu) { handleShowDetails(searchProjectsListFragment.getShowDetails(), menu.findItem(R.id.menu_scratch_projects_show_details)); return super.onPrepareOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_scratch_projects_convert: Log.d(TAG, "Selected menu item 'convert'"); searchProjectsListFragment.startConvertActionMode(); break; case R.id.menu_scratch_projects_show_details: Log.d(TAG, "Selected menu item 'Show/Hide details'"); handleShowDetails(!searchProjectsListFragment.getShowDetails(), item); break; } return super.onOptionsItemSelected(item); } private void handleShowDetails(boolean showDetails, MenuItem item) { searchProjectsListFragment.setShowDetails(showDetails); item.setTitle(showDetails ? R.string.hide_details : R.string.show_details); } public void displaySpeechRecognizer() { Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH); intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM); startActivityForResult(intent, Constants.INTENT_REQUEST_CODE_SPEECH); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == Constants.INTENT_REQUEST_CODE_SPEECH && resultCode == RESULT_OK) { List<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS); String spokenText = results.get(0); searchProjectsListFragment.searchAndUpdateText(spokenText); } else if (requestCode == Constants.INTENT_REQUEST_CODE_CONVERT && resultCode == RESULT_OK) { if (!data.hasExtra(Constants.INTENT_SCRATCH_PROGRAM_DATA)) { super.onActivityResult(requestCode, resultCode, data); return; } final ScratchProgramData projectData = data.getParcelableExtra(Constants.INTENT_SCRATCH_PROGRAM_DATA); final List<ScratchProgramData> projectList = new ArrayList<>(); projectList.add(projectData); convertProjects(projectList); } super.onActivityResult(requestCode, resultCode, data); } @Override public void onPanelSlide(View panel, float slideOffset) { converterSlidingUpPanelFragment.rotateImageButton(slideOffset * 180.0f); } @Override public void onPanelStateChanged(View panel, SlidingUpPanelLayout.PanelState previousState, SlidingUpPanelLayout.PanelState newState) { Log.d(TAG, "SlidingUpPanel state changed: " + newState.toString()); switch (newState) { case EXPANDED: converterSlidingUpPanelFragment.rotateImageButton(180); converterSlidingUpPanelFragment.scrollUpPanelScrollView(); break; case COLLAPSED: converterSlidingUpPanelFragment.rotateImageButton(0); converterSlidingUpPanelFragment.scrollUpPanelScrollView(); break; } } }