Java tutorial
/* * Copyright 2010-2013 Eric Kok et al. * * Transdroid 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. * * Transdroid 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 Transdroid. If not, see <http://www.gnu.org/licenses/>. */ package org.transdroid.core.gui.search; import android.annotation.TargetApi; import android.app.SearchManager; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.provider.SearchRecentSuggestions; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.SearchView; import android.widget.Spinner; import android.widget.TextView; import org.androidannotations.annotations.AfterViews; import org.androidannotations.annotations.Bean; import org.androidannotations.annotations.EActivity; import org.androidannotations.annotations.FragmentById; import org.androidannotations.annotations.OptionsItem; import org.androidannotations.annotations.SystemService; import org.androidannotations.annotations.ViewById; import org.transdroid.R; import org.transdroid.core.app.search.SearchHelper; import org.transdroid.core.app.search.SearchSite; import org.transdroid.core.app.settings.ApplicationSettings; import org.transdroid.core.app.settings.SystemSettings_; import org.transdroid.core.app.settings.WebsearchSetting; import org.transdroid.core.gui.TorrentsActivity_; import org.transdroid.core.gui.navigation.NavigationHelper; import java.util.List; /** * An activity that shows search results to the user (after a query was supplied by the standard Android search manager) and either shows the list of * search sites on the left (e.g. on tablets) or allows switching between search sites via the action bar spinner. * @author Eric Kok */ @EActivity(R.layout.activity_search) public class SearchActivity extends AppCompatActivity { @ViewById protected Toolbar searchToolbar; @ViewById protected Spinner sitesSpinner; @FragmentById(R.id.searchresults_fragment) protected SearchResultsFragment fragmentResults; @ViewById protected ListView searchsitesList; @ViewById protected TextView installmoduleText; @Bean protected ApplicationSettings applicationSettings; @Bean protected SearchHelper searchHelper; @SystemService protected SearchManager searchManager; private MenuItem searchMenu = null; private SearchRecentSuggestions suggestions = new SearchRecentSuggestions(this, SearchHistoryProvider.AUTHORITY, SearchHistoryProvider.MODE); private List<SearchSetting> searchSites; private SearchSetting lastUsedSite; private String lastUsedQuery; @Override public void onCreate(Bundle savedInstanceState) { // Set the theme according to the user preference if (SystemSettings_.getInstance_(this).useDarkTheme()) { setTheme(R.style.TransdroidTheme_Dark); } super.onCreate(savedInstanceState); } @AfterViews protected void init() { searchToolbar.setNavigationIcon(R.drawable.abc_ic_ab_back_mtrl_am_alpha); searchToolbar.setNavigationOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { TorrentsActivity_.intent(SearchActivity.this).flags(Intent.FLAG_ACTIVITY_CLEAR_TOP).start(); } }); setSupportActionBar(searchToolbar); // Get the user query, as coming from the standard SearchManager handleIntent(getIntent()); if (!searchHelper.isTorrentSearchInstalled()) { // The module install text will be shown instead (in onPrepareOptionsMenu) return; } // Load sites and find the last used (or set as default) search site searchSites = applicationSettings.getSearchSettings(); lastUsedSite = applicationSettings.getLastUsedSearchSite(); int lastUsedPosition = -1; if (lastUsedSite != null) { for (int i = 0; i < searchSites.size(); i++) { if (searchSites.get(i).getKey().equals(lastUsedSite.getKey())) { lastUsedPosition = i; break; } } } // Allow site selection via list (on large screens) or action bar spinner if (searchsitesList != null) { // The current layout has a dedicated list view to select the search site SearchSitesAdapter searchSitesAdapter = SearchSitesAdapter_.getInstance_(this); searchSitesAdapter.update(searchSites); searchsitesList.setAdapter(searchSitesAdapter); searchsitesList.setOnItemClickListener(onSearchSiteClicked); // Select the last used site and start the search if (lastUsedPosition >= 0) { searchsitesList.setItemChecked(lastUsedPosition, true); lastUsedSite = searchSites.get(lastUsedPosition); refreshSearch(); } } else { // Use the action bar spinner to select sites sitesSpinner.setVisibility(View.VISIBLE); sitesSpinner.setAdapter(new SearchSettingsDropDownAdapter(searchToolbar.getContext(), searchSites)); sitesSpinner.setOnItemSelectedListener(onSearchSiteSelected); // Select the last used site; this also starts the search! if (lastUsedPosition >= 0) { sitesSpinner.setSelection(lastUsedPosition); lastUsedSite = searchSites.get(lastUsedPosition); refreshSearch(); } } invalidateOptionsMenu(); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Manually insert the actions into the main torrent and secondary actions toolbars searchToolbar.inflateMenu(R.menu.activity_search); // Add an expandable SearchView to the action bar MenuItem item = menu.findItem(R.id.action_search); final SearchView searchView = new SearchView(getSupportActionBar().getThemedContext()); searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); searchView.setQueryRefinementEnabled(true); searchView.setIconified(false); searchView.setIconifiedByDefault(false); MenuItemCompat.setActionView(item, searchView); searchMenu = item; return true; } @Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); boolean searchInstalled = searchHelper.isTorrentSearchInstalled(); searchToolbar.getMenu().findItem(R.id.action_search).setVisible(searchInstalled); searchToolbar.getMenu().findItem(R.id.action_refresh).setVisible(searchInstalled); searchToolbar.getMenu().findItem(R.id.action_downloadsearch).setVisible(!searchInstalled); if (searchsitesList != null) { searchsitesList.setVisibility(searchInstalled ? View.VISIBLE : View.GONE); } if (searchInstalled) { getFragmentManager().beginTransaction().show(fragmentResults).commit(); } else { getFragmentManager().beginTransaction().hide(fragmentResults).commit(); } installmoduleText.setVisibility(searchInstalled ? View.GONE : View.VISIBLE); return true; } @Override protected void onNewIntent(Intent intent) { handleIntent(intent); refreshSearch(); } private void handleIntent(Intent intent) { lastUsedQuery = parseQuery(intent); // Is this actually a full HTTP URL? Then redirect this request to add the URL directly if (lastUsedQuery != null && (lastUsedQuery.startsWith("http") || lastUsedQuery.startsWith("https") || lastUsedQuery.startsWith("magnet") || lastUsedQuery.startsWith("file"))) { // Don't broadcast this intent; we can safely assume this is intended for Transdroid only Intent i = TorrentsActivity_.intent(this).get(); i.setData(Uri.parse(lastUsedQuery)); startActivity(i); finish(); } } @Override public boolean onSearchRequested() { if (searchMenu != null) { searchMenu.expandActionView(); } return true; } private OnItemClickListener onSearchSiteClicked = new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { lastUsedSite = searchSites.get(position); refreshSearch(); } }; private AdapterView.OnItemSelectedListener onSearchSiteSelected = new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { lastUsedSite = searchSites.get(position); refreshSearch(); } @Override public void onNothingSelected(AdapterView<?> parent) { } }; /** * Extracts the query string from the search {@link Intent} * @return The query string that was entered by the user */ private String parseQuery(Intent intent) { String query = null; if (intent.getAction().equals(Intent.ACTION_SEARCH)) { query = intent.getStringExtra(SearchManager.QUERY).trim(); } else if (intent.getAction().equals(Intent.ACTION_SEND)) { query = SendIntentHelper.cleanUpText(intent).trim(); } if (query != null && query.length() > 0) { // Remember this search query to later show as a suggestion suggestions.saveRecentQuery(query, null); return query; } return null; } @TargetApi(Build.VERSION_CODES.HONEYCOMB) @OptionsItem(android.R.id.home) protected void navigateUp() { TorrentsActivity_.intent(this).flags(Intent.FLAG_ACTIVITY_CLEAR_TOP).start(); } @OptionsItem(R.id.action_refresh) protected void refreshSearch() { if (searchMenu != null) { // Close the search view in the ation bar searchMenu.collapseActionView(); } if (lastUsedSite instanceof WebsearchSetting) { // Start a browser page directly to the requested search results WebsearchSetting websearch = (WebsearchSetting) lastUsedSite; startActivity( new Intent(Intent.ACTION_VIEW, Uri.parse(websearch.getBaseUrl().replace("%s", lastUsedQuery)))); finish(); } else if (lastUsedSite instanceof SearchSite) { // Save the search site currently used to search for future usage applicationSettings.setLastUsedSearchSite(lastUsedSite); // Update the activity title (only shown on large devices) if (sitesSpinner != null) searchToolbar.setTitle(NavigationHelper.buildCondensedFontString( getString(R.string.search_queryonsite, lastUsedQuery, lastUsedSite.getName()))); // Ask the results fragment to start a search for the specified query fragmentResults.startSearch(lastUsedQuery, (SearchSite) lastUsedSite); } } @OptionsItem(R.id.action_downloadsearch) protected void downloadSearchModule() { startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.transdroid.org/latest-search"))); } }