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Improve UI send latency

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// FREEBIE
This commit is contained in:
Moxie Marlinspike
2017-04-22 16:29:26 -07:00
parent 4d889a45e2
commit cb670d6783
30 changed files with 459 additions and 94 deletions
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40
src/org/thoughtcrime/securesms/database/CursorRecyclerViewAdapter.java
View File

@@ -115,6 +115,7 @@ public abstract class CursorRecyclerViewAdapter<VH extends RecyclerView.ViewHold
if (!isActiveCursor()) return 0;
return cursor.getCount()
+ getFastAccessSize()
+ (hasHeaderView() ? 1 : 0)
+ (hasFooterView() ? 1 : 0);
}
@@ -144,16 +145,22 @@ public abstract class CursorRecyclerViewAdapter<VH extends RecyclerView.ViewHold
@Override
public final void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
if (!isHeaderPosition(position) && !isFooterPosition(position)) {
onBindItemViewHolder((VH)viewHolder, getCursorAtPositionOrThrow(position));
if (isFastAccessPosition(position)) onBindFastAccessItemViewHolder((VH)viewHolder, position);
else onBindItemViewHolder((VH)viewHolder, getCursorAtPositionOrThrow(position));
}
}
public abstract void onBindItemViewHolder(VH viewHolder, @NonNull Cursor cursor);
protected void onBindFastAccessItemViewHolder(VH viewHolder, int position) {
}
@Override
public final int getItemViewType(int position) {
if (isHeaderPosition(position)) return HEADER_TYPE;
if (isFooterPosition(position)) return FOOTER_TYPE;
if (isHeaderPosition(position)) return HEADER_TYPE;
if (isFooterPosition(position)) return FOOTER_TYPE;
if (isFastAccessPosition(position)) return getFastAccessItemViewType(position);
return getItemViewType(getCursorAtPositionOrThrow(position));
}
@@ -163,8 +170,9 @@ public abstract class CursorRecyclerViewAdapter<VH extends RecyclerView.ViewHold
@Override
public final long getItemId(int position) {
if (isHeaderPosition(position)) return HEADER_ID;
if (isFooterPosition(position)) return FOOTER_ID;
if (isHeaderPosition(position)) return HEADER_ID;
if (isFooterPosition(position)) return FOOTER_ID;
if (isFastAccessPosition(position)) return getFastAccessItemId(position);
long itemId = getItemId(getCursorAtPositionOrThrow(position));
return itemId <= Long.MIN_VALUE + 1 ? itemId + 2 : itemId;
}
@@ -196,7 +204,27 @@ public abstract class CursorRecyclerViewAdapter<VH extends RecyclerView.ViewHold
}
private int getCursorPosition(int position) {
return hasHeaderView() ? position - 1 : position;
if (hasHeaderView()) {
position -= 1;
}
return position - getFastAccessSize();
}
protected int getFastAccessItemViewType(int position) {
return 0;
}
protected boolean isFastAccessPosition(int position) {
return false;
}
protected long getFastAccessItemId(int position) {
return 0;
}
protected int getFastAccessSize() {
return 0;
}
private class AdapterDataSetObserver extends DataSetObserver {