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Code Issues Releases Wiki Activity

[broken] Convert RefreshManager to Rx

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Bradlee Speice
2014-06-10 22:04:53 -04:00
parent 5770e8dd74
commit ca1ccd9942
1 changed files with 36 additions and 28 deletions
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64
MinimalBible/src/main/java/org/bspeice/minimalbible/activities/downloader/manager/RefreshManager.java
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@ -1,5 +1,7 @@
package org.bspeice.minimalbible.activities.downloader.manager;
import android.os.Handler;
import org.bspeice.minimalbible.MinimalBible;
import org.crosswire.jsword.book.Book;
import org.crosswire.jsword.book.install.Installer;
@ -12,7 +14,8 @@ import java.util.Map;
import javax.inject.Inject;
import javax.inject.Singleton;
import de.greenrobot.event.EventBus;
import rx.Observable;
import rx.android.schedulers.AndroidSchedulers;
/**
* Handle refreshing the list of books available as needed
@ -25,11 +28,11 @@ public class RefreshManager {
/**
* Cached copy of modules that are available so we don't refresh for everyone who requests it.
*/
private Map<Installer, List<Book>> availableModules;
private Observable<Map<Installer, List<Book>>> availableModules;
private boolean refreshComplete;
public RefreshManager() {
MinimalBible.getApplication().inject(this);
availableModules = new HashMap<Installer, List<Book>>();
refreshModules();
}
@ -38,18 +41,20 @@ public class RefreshManager {
* when it's done.
*/
private void refreshModules() {
EventBus refreshBus = downloadManager.getDownloadBus();
refreshBus.register(this);
new BookRefreshTask().execute(downloadManager.getInstallersArray());
}
if (availableModules == null) {
Handler backgroundHandler = new Handler();
availableModules = Observable.from(downloadManager.getInstallers().values())
.map(installer -> {
Map<Installer, List<Book>> map = new HashMap<Installer, List<Book>>();
map.put(installer, installer.getBooks());
return map;
}).observeOn(AndroidSchedulers.handlerThread(backgroundHandler))
.cache();
/**
* When book refresh is done, cache the list so we can give that to someone else
* @param event A POJO wrapper around the Book list
*/
@SuppressWarnings("unused")
public void onEvent(EventBookList event) {
this.availableModules = event.getInstallerMapping();
// Set refresh complete when it is.
availableModules.subscribeOn(AndroidSchedulers.handlerThread(backgroundHandler))
.subscribe(null, null, () -> refreshComplete = true);
}
}
/**
@ -57,15 +62,14 @@ public class RefreshManager {
* @return The cached book list, or null
*/
public List<Book> getBookList() {
if (availableModules.values().size() == 0) {
return null;
} else {
List<Book> bookList = new ArrayList<Book>();
for (List<Book> l : availableModules.values()) {
bookList.addAll(l);
List<Book> availableList = new ArrayList<>();
availableModules.reduce(availableList, (books, installerListMap) -> {
for (List<Book> l : installerListMap.values()) {
books.addAll(l);
}
return bookList;
}
return books;
});
return availableList;
}
/**
@ -73,12 +77,16 @@ public class RefreshManager {
* @param b The book to search for
* @return The Installer that should be used for this book.
*/
public Installer installerFromBook(Book b) {
for (Map.Entry<Installer, List<Book>> entry : availableModules.entrySet()) {
if (entry.getValue().contains(b)) {
return entry.getKey();
public Observable<Installer> installerFromBook(Book b) {
return availableModules.filter(installerListMap -> {
for (List<Book> element : installerListMap.values()) {
if (element.contains(b)) {
return true;
}
}
}
return null;
return false;
})
.take(1)
.map(element -> element.entrySet().iterator().next().getKey());
}
}