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Code Issues Releases Wiki Activity

Make next/prev buttons track their state again.

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This commit is contained in:
Danny Baumann 2013-02-05 16:06:36 +01:00
parent 5c779f05ab
commit 499e20ef76
2 changed files with 32 additions and 5 deletions
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13
src/com/fsck/k9/activity/MessageList.java
View File

@ -921,6 +921,18 @@ public class MessageList extends K9FragmentActivity implements MessageListFragme
if (mDisplayMode != DisplayMode.MESSAGE_VIEW) {
menu.findItem(R.id.next_message).setVisible(false);
menu.findItem(R.id.previous_message).setVisible(false);
} else {
final MessageReference ref = mMessageViewFragment.getMessageReference();
final boolean canDoPrev = mMessageListFragment != null && !mMessageListFragment.isFirst(ref);
final boolean canDoNext = mMessageListFragment != null && !mMessageListFragment.isLast(ref);
final MenuItem prev = menu.findItem(R.id.previous_message);
prev.setEnabled(canDoPrev);
prev.getIcon().setAlpha(canDoPrev ? 255 : 127);
final MenuItem next = menu.findItem(R.id.next_message);
next.setEnabled(canDoNext);
next.getIcon().setAlpha(canDoNext ? 255 : 127);
}
// Set title of menu item to switch to dark/light theme
MenuItem toggleTheme = menu.findItem(R.id.toggle_message_view_theme);
@ -1063,6 +1075,7 @@ public class MessageList extends K9FragmentActivity implements MessageListFragme
showMessageView();
}
}
invalidateOptionsMenu();
}
@Override

24
src/com/fsck/k9/fragment/MessageListFragment.java
View File

@ -2838,6 +2838,24 @@ public class MessageListFragment extends SherlockFragment implements OnItemClick
openMessageAtPosition(position + 1);
}
public boolean isFirst(MessageReference messageReference) {
return messageReference.equals(getReferenceForPosition(0));
}
public boolean isLast(MessageReference messageReference) {
return messageReference.equals(getReferenceForPosition(mAdapter.getCount() - 1));
}
private MessageReference getReferenceForPosition(int position) {
Cursor cursor = (Cursor) mAdapter.getItem(position);
MessageReference ref = new MessageReference();
ref.accountUuid = cursor.getString(ACCOUNT_UUID_COLUMN);
ref.folderName = cursor.getString(FOLDER_NAME_COLUMN);
ref.uid = cursor.getString(UID_COLUMN);
return ref;
}
private void openMessageAtPosition(int position) {
// Scroll message into view if necessary
int listViewPosition = adapterToListViewPosition(position);
@ -2847,11 +2865,7 @@ public class MessageListFragment extends SherlockFragment implements OnItemClick
mListView.setSelection(listViewPosition);
}
Cursor cursor = (Cursor) mAdapter.getItem(position);
MessageReference ref = new MessageReference();
ref.accountUuid = cursor.getString(ACCOUNT_UUID_COLUMN);
ref.folderName = cursor.getString(FOLDER_NAME_COLUMN);
ref.uid = cursor.getString(UID_COLUMN);
MessageReference ref = getReferenceForPosition(position);
// For some reason the mListView.setSelection() above won't do anything when we call
// onOpenMessage() (and consequently mAdapter.notifyDataSetChanged()) right away. So we