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Add shadow under compose view on scroll

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Fixes #5098
Closes #5796
// FREEBIE
This commit is contained in:
mateoeh
2016-10-19 22:08:00 -05:00
committed by Moxie Marlinspike
parent b8d938a020
commit 0a72f6b32e
4 changed files with 64 additions and 9 deletions
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39
src/org/thoughtcrime/securesms/ConversationFragment.java
View File

@@ -33,6 +33,7 @@ import android.support.v7.view.ActionMode;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.RecyclerView.ItemAnimator.ItemAnimatorFinishedListener;
import android.support.v7.widget.RecyclerView.OnScrollListener;
import android.text.ClipboardManager;
import android.text.TextUtils;
import android.util.Log;
@@ -78,6 +79,7 @@ public class ConversationFragment extends Fragment
private final ActionModeCallback actionModeCallback = new ActionModeCallback();
private final ItemClickListener selectionClickListener = new ConversationFragmentItemClickListener();
private final OnScrollListener scrollListener = new ConversationScrollListener();
private ConversationFragmentListener listener;
@@ -88,6 +90,7 @@ public class ConversationFragment extends Fragment
private Locale locale;
private RecyclerView list;
private View loadMoreView;
private View composeDivider;
@Override
public void onCreate(Bundle icicle) {
@@ -99,10 +102,13 @@ public class ConversationFragment extends Fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle bundle) {
final View view = inflater.inflate(R.layout.conversation_fragment, container, false);
list = ViewUtil.findById(view, android.R.id.list);
list = ViewUtil.findById(view, android.R.id.list);
composeDivider = ViewUtil.findById(view, R.id.compose_divider);
final LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, true);
list.setHasFixedSize(false);
list.setLayoutManager(layoutManager);
list.addOnScrollListener(scrollListener);
loadMoreView = inflater.inflate(R.layout.load_more_header, container, false);
loadMoreView.setOnClickListener(new OnClickListener() {
@@ -395,6 +401,37 @@ public class ConversationFragment extends Fragment
void setThreadId(long threadId);
}
private class ConversationScrollListener extends OnScrollListener {
private boolean wasAtBottom = true;
@Override
public void onScrolled(final RecyclerView rv, final int dx, final int dy) {
boolean currentlyAtBottom = isAtBottom();
if (wasAtBottom != currentlyAtBottom) {
composeDivider.setVisibility(currentlyAtBottom ? View.INVISIBLE : View.VISIBLE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR1) {
composeDivider.animate().alpha(currentlyAtBottom ? 0 : 1);
} else if (Build.VERSION.SDK_INT > Build.VERSION_CODES.HONEYCOMB) {
composeDivider.setAlpha(currentlyAtBottom ? 0 : 1);
}
wasAtBottom = currentlyAtBottom;
}
}
private boolean isAtBottom() {
if (list.getChildCount() == 0) return true;
View bottomView = list.getChildAt(0);
int firstVisibleItem = ((LinearLayoutManager) list.getLayoutManager()).findFirstVisibleItemPosition();
boolean isAtBottom = (firstVisibleItem == 0);
return isAtBottom && bottomView.getBottom() <= list.getHeight();
}
}
private class ConversationFragmentItemClickListener implements ItemClickListener {
@Override