diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/ui/listeners/ConversationMoreMessagesLoadedListener.java')
-rw-r--r-- | src/main/java/eu/siacs/conversations/ui/listeners/ConversationMoreMessagesLoadedListener.java | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/ui/listeners/ConversationMoreMessagesLoadedListener.java b/src/main/java/eu/siacs/conversations/ui/listeners/ConversationMoreMessagesLoadedListener.java new file mode 100644 index 00000000..08916206 --- /dev/null +++ b/src/main/java/eu/siacs/conversations/ui/listeners/ConversationMoreMessagesLoadedListener.java @@ -0,0 +1,143 @@ +package eu.siacs.conversations.ui.listeners; + +import android.view.View; +import android.widget.ListView; +import android.widget.Toast; + +import com.orangegangsters.github.swipyrefreshlayout.library.SwipyRefreshLayout; + +import java.util.List; + +import eu.siacs.conversations.entities.Conversation; +import eu.siacs.conversations.entities.Message; +import eu.siacs.conversations.services.XmppConnectionService; +import eu.siacs.conversations.ui.ConversationActivity; +import eu.siacs.conversations.ui.ConversationFragment; +import eu.siacs.conversations.ui.adapter.MessageAdapter; + +/** + * This listener updates the UI when messages are loaded from the server. + */ +public class ConversationMoreMessagesLoadedListener implements XmppConnectionService.OnMoreMessagesLoaded { + private SwipyRefreshLayout swipeLayout; + private List<Message> messageList; + private ConversationFragment fragment; + private ListView messagesView; + private MessageAdapter messageListAdapter; + private Toast messageLoaderToast; + /* + The current loading status + */ + private boolean loadingMessages = false; + /** + * Whether the user is loading only history messages or not. + * History messages are messages which are older than the oldest in the database. + */ + private boolean loadHistory = true; + + public ConversationMoreMessagesLoadedListener(SwipyRefreshLayout swipeLayout, List<Message> messageList, ConversationFragment fragment, ListView messagesView, MessageAdapter messageListAdapter) { + this.swipeLayout = swipeLayout; + this.messageList = messageList; + this.fragment = fragment; + this.messagesView = messagesView; + this.messageListAdapter = messageListAdapter; + } + + public void setLoadHistory(boolean value) { + this.loadHistory = value; + } + + public void setLoadingInProgress() { + this.loadingMessages = true; + } + + public boolean isLoadingInProgress() { + return this.loadingMessages; + } + + @Override + public void onMoreMessagesLoaded(final int c, final Conversation conversation) { + ConversationActivity activity = (ConversationActivity) fragment.getActivity(); + // Current selected conversation is not the same the messages are loaded - skip updating message view and hide loading graphic + if (activity.getSelectedConversation() != conversation) { + activity.runOnUiThread(new Runnable() { + @Override + public void run() { + swipeLayout.setRefreshing(false); + } + }); + return; + } + // No new messages are loaded + if (0 == c) { + if (this.loadHistory) { + conversation.setHasMessagesLeftOnServer(false); + } + activity.runOnUiThread(new Runnable() { + @Override + public void run() { + swipeLayout.setRefreshing(false); + } + }); + } + activity.runOnUiThread(new Runnable() { + @Override + public void run() { + final int oldPosition = messagesView.getFirstVisiblePosition(); // Always 0 - because loading starts always when hitting the top + String uuid = null; + boolean oldMessageListWasEmpty = messageList.isEmpty(); + if (-1 < oldPosition && messageList.size() > oldPosition) { + Message message = messageList.get(oldPosition); + uuid = message != null ? message.getUuid() : null; + } + View v = messagesView.getChildAt(0); + final int pxOffset = (v == null) ? 0 : v.getTop(); + + conversation.populateWithMessages(messageList); // This overrides the old message list + fragment.updateStatusMessages(); // This adds "messages" to the list for the status + messageListAdapter.notifyDataSetChanged(); + loadingMessages = false; // Loading of messages is finished - next query can be loaded + + int pos = getIndexOf(uuid, messageList); + + if (!oldMessageListWasEmpty) { + messagesView.setSelectionFromTop(pos, pxOffset); + } + + if (messageLoaderToast != null) { + messageLoaderToast.cancel(); + } + swipeLayout.setRefreshing(false); + } + }); + } + + @Override + public void informUser(final int resId) { + final ConversationActivity activity = (ConversationActivity) fragment.getActivity(); + + activity.runOnUiThread(new Runnable() { + @Override + public void run() { + if (messageLoaderToast != null) { + messageLoaderToast.cancel(); + } + messageLoaderToast = Toast.makeText(activity, resId, Toast.LENGTH_LONG); + messageLoaderToast.show(); + } + }); + + } + + private int getIndexOf(String uuid, List<Message> messages) { + if (uuid == null) { + return 0; + } + for (int i = 0; i < messages.size(); ++i) { + if (uuid.equals(messages.get(i).getUuid())) { + return i; + } + } + return 0; + } +} |