/**
* Updates the set of filtered apps with the current filter. At this point, we expect
* mCachedSectionNames to have been calculated for the set of all apps in mApps.
*/
private void updateAdapterItems() {
SectionInfo lastSectionInfo = null;
String lastSectionName = null;
FastScrollSectionInfo lastFastScrollerSectionInfo = null;
int position = 0;
int appIndex = 0;
// Prepare to update the list of sections, filtered apps, etc.
mFilteredApps.clear();
mFastScrollerSections.clear();
mAdapterItems.clear();
mSections.clear();
if (DEBUG_PREDICTIONS) {
if (mPredictedAppComponents.isEmpty() && !mApps.isEmpty()) {
mPredictedAppComponents.add(
new ComponentKey(mApps.get(0).componentName, UserHandleCompat.myUserHandle()));
mPredictedAppComponents.add(
new ComponentKey(mApps.get(0).componentName, UserHandleCompat.myUserHandle()));
mPredictedAppComponents.add(
new ComponentKey(mApps.get(0).componentName, UserHandleCompat.myUserHandle()));
mPredictedAppComponents.add(
new ComponentKey(mApps.get(0).componentName, UserHandleCompat.myUserHandle()));
}
}
// Process the predicted app components
mPredictedApps.clear();
if (mPredictedAppComponents != null && !mPredictedAppComponents.isEmpty() && !hasFilter()) {
for (ComponentKey ck : mPredictedAppComponents) {
AppInfo info = mComponentToAppMap.get(ck);
if (info != null) {
mPredictedApps.add(info);
} else {
if (LauncherAppState.isDogfoodBuild()) {
Log.e(TAG, "Predicted app not found: " + ck.flattenToString(mLauncher));
}
}
// Stop at the number of predicted apps
if (mPredictedApps.size() == mNumPredictedAppsPerRow) {
break;
}
}
if (!mPredictedApps.isEmpty()) {
// Add a section for the predictions
lastSectionInfo = new SectionInfo();
lastFastScrollerSectionInfo = new FastScrollSectionInfo("");
AdapterItem sectionItem = AdapterItem.asSectionBreak(position++, lastSectionInfo);
mSections.add(lastSectionInfo);
mFastScrollerSections.add(lastFastScrollerSectionInfo);
mAdapterItems.add(sectionItem);
// Add the predicted app items
for (AppInfo info : mPredictedApps) {
AdapterItem appItem =
AdapterItem.asPredictedApp(
position++, lastSectionInfo, "", lastSectionInfo.numApps++, info, appIndex++);
if (lastSectionInfo.firstAppItem == null) {
lastSectionInfo.firstAppItem = appItem;
lastFastScrollerSectionInfo.fastScrollToItem = appItem;
}
mAdapterItems.add(appItem);
mFilteredApps.add(info);
}
}
}
// Recreate the filtered and sectioned apps (for convenience for the grid layout) from the
// ordered set of sections
for (AppInfo info : getFiltersAppInfos()) {
String sectionName = getAndUpdateCachedSectionName(info.title);
// Create a new section if the section names do not match
if (lastSectionInfo == null || !sectionName.equals(lastSectionName)) {
lastSectionName = sectionName;
lastSectionInfo = new SectionInfo();
lastFastScrollerSectionInfo = new FastScrollSectionInfo(sectionName);
mSections.add(lastSectionInfo);
mFastScrollerSections.add(lastFastScrollerSectionInfo);
// Create a new section item to break the flow of items in the list
if (!hasFilter()) {
AdapterItem sectionItem = AdapterItem.asSectionBreak(position++, lastSectionInfo);
mAdapterItems.add(sectionItem);
}
}
// Create an app item
AdapterItem appItem =
AdapterItem.asApp(
position++,
lastSectionInfo,
sectionName,
lastSectionInfo.numApps++,
info,
appIndex++);
if (lastSectionInfo.firstAppItem == null) {
lastSectionInfo.firstAppItem = appItem;
lastFastScrollerSectionInfo.fastScrollToItem = appItem;
}
mAdapterItems.add(appItem);
mFilteredApps.add(info);
}
// Append the search market item if we are currently searching
if (hasFilter()) {
if (hasNoFilteredResults()) {
mAdapterItems.add(AdapterItem.asEmptySearch(position++));
} else {
mAdapterItems.add(AdapterItem.asDivider(position++));
}
mAdapterItems.add(AdapterItem.asMarketSearch(position++));
}
// Merge multiple sections together as requested by the merge strategy for this device
mergeSections();
if (mNumAppsPerRow != 0) {
// Update the number of rows in the adapter after we do all the merging (otherwise, we
// would have to shift the values again)
int numAppsInSection = 0;
int numAppsInRow = 0;
int rowIndex = -1;
for (AdapterItem item : mAdapterItems) {
item.rowIndex = 0;
if (item.viewType == AllAppsGridAdapter.SECTION_BREAK_VIEW_TYPE) {
numAppsInSection = 0;
} else if (item.viewType == AllAppsGridAdapter.ICON_VIEW_TYPE
|| item.viewType == AllAppsGridAdapter.PREDICTION_ICON_VIEW_TYPE) {
if (numAppsInSection % mNumAppsPerRow == 0) {
numAppsInRow = 0;
rowIndex++;
}
item.rowIndex = rowIndex;
item.rowAppIndex = numAppsInRow;
numAppsInSection++;
numAppsInRow++;
}
}
mNumAppRowsInAdapter = rowIndex + 1;
// Pre-calculate all the fast scroller fractions
switch (mFastScrollDistributionMode) {
case FAST_SCROLL_FRACTION_DISTRIBUTE_BY_ROWS_FRACTION:
float rowFraction = 1f / mNumAppRowsInAdapter;
for (FastScrollSectionInfo info : mFastScrollerSections) {
AdapterItem item = info.fastScrollToItem;
if (item.viewType != AllAppsGridAdapter.ICON_VIEW_TYPE
&& item.viewType != AllAppsGridAdapter.PREDICTION_ICON_VIEW_TYPE) {
info.touchFraction = 0f;
continue;
}
float subRowFraction = item.rowAppIndex * (rowFraction / mNumAppsPerRow);
info.touchFraction = item.rowIndex * rowFraction + subRowFraction;
}
break;
case FAST_SCROLL_FRACTION_DISTRIBUTE_BY_NUM_SECTIONS:
float perSectionTouchFraction = 1f / mFastScrollerSections.size();
float cumulativeTouchFraction = 0f;
for (FastScrollSectionInfo info : mFastScrollerSections) {
AdapterItem item = info.fastScrollToItem;
if (item.viewType != AllAppsGridAdapter.ICON_VIEW_TYPE
&& item.viewType != AllAppsGridAdapter.PREDICTION_ICON_VIEW_TYPE) {
info.touchFraction = 0f;
continue;
}
info.touchFraction = cumulativeTouchFraction;
cumulativeTouchFraction += perSectionTouchFraction;
}
break;
}
}
// Refresh the recycler view
if (mAdapter != null) {
mAdapter.notifyDataSetChanged();
}
}
