public static AdapterItem asSectionBreak(int pos, SectionInfo section) {
AdapterItem item = new AdapterItem();
item.viewType = AllAppsGridAdapter.SECTION_BREAK_VIEW_TYPE;
item.position = pos;
item.sectionInfo = section;
section.sectionBreakItem = item;
return item;
}
/** Merges multiple sections to reduce visual raggedness. */
private void mergeSections() {
// Ignore merging until we have an algorithm and a valid row size
if (mMergeAlgorithm == null || mNumAppsPerRow == 0) {
return;
}
// Go through each section and try and merge some of the sections
if (!hasFilter()) {
int sectionAppCount = 0;
for (int i = 0; i < mSections.size() - 1; i++) {
SectionInfo section = mSections.get(i);
sectionAppCount = section.numApps;
int mergeCount = 1;
// Merge rows based on the current strategy
while (i < (mSections.size() - 1)
&& mMergeAlgorithm.continueMerging(
section, mSections.get(i + 1), sectionAppCount, mNumAppsPerRow, mergeCount)) {
SectionInfo nextSection = mSections.remove(i + 1);
// Remove the next section break
mAdapterItems.remove(nextSection.sectionBreakItem);
int pos = mAdapterItems.indexOf(section.firstAppItem);
// Point the section for these new apps to the merged section
int nextPos = pos + section.numApps;
for (int j = nextPos; j < (nextPos + nextSection.numApps); j++) {
AdapterItem item = mAdapterItems.get(j);
item.sectionInfo = section;
item.sectionAppIndex += section.numApps;
}
// Update the following adapter items of the removed section item
pos = mAdapterItems.indexOf(nextSection.firstAppItem);
for (int j = pos; j < mAdapterItems.size(); j++) {
AdapterItem item = mAdapterItems.get(j);
item.position--;
}
section.numApps += nextSection.numApps;
sectionAppCount += nextSection.numApps;
if (DEBUG) {
Log.d(
TAG,
"Merging: "
+ nextSection.firstAppItem.sectionName
+ " to "
+ section.firstAppItem.sectionName
+ " mergedNumRows: "
+ (sectionAppCount / mNumAppsPerRow));
}
mergeCount++;
}
}
}
}
public static AdapterItem asPredictedApp(
int pos,
SectionInfo section,
String sectionName,
int sectionAppIndex,
AppInfo appInfo,
int appIndex) {
AdapterItem item = asApp(pos, section, sectionName, sectionAppIndex, appInfo, appIndex);
item.viewType = AllAppsGridAdapter.PREDICTION_ICON_VIEW_TYPE;
return item;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// Log.d("ddd", "getView");
if (mInflater == null) {
mInflater = LayoutInflater.from(parent.getContext());
}
AdapterItem<T> item;
if (convertView == null) {
item = getItemView(mType);
convertView = mInflater.inflate(item.getLayoutResId(), parent, false);
convertView.setTag(R.id.tag_item, item);
item.onBindViews(convertView);
item.onSetViews();
if (DEBUG) convertView.setBackgroundColor(0xffff0000);
} else {
item = (AdapterItem<T>) convertView.getTag(R.id.tag_item);
if (DEBUG) convertView.setBackgroundColor(0xff00ff00);
}
item.onUpdateViews(mDataList.get(position), position);
return convertView;
}
public static AdapterItem asApp(
int pos,
SectionInfo section,
String sectionName,
int sectionAppIndex,
AppInfo appInfo,
int appIndex) {
AdapterItem item = new AdapterItem();
item.viewType = AllAppsGridAdapter.ICON_VIEW_TYPE;
item.position = pos;
item.sectionInfo = section;
item.sectionName = sectionName;
item.sectionAppIndex = sectionAppIndex;
item.appInfo = appInfo;
item.appIndex = appIndex;
return item;
}
/**
* 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();
}
}
public static AdapterItem asMarketSearch(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = AllAppsGridAdapter.SEARCH_MARKET_VIEW_TYPE;
item.position = pos;
return item;
}
public static AdapterItem asDivider(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = AllAppsGridAdapter.SEARCH_MARKET_DIVIDER_VIEW_TYPE;
item.position = pos;
return item;
}
public static AdapterItem asEmptySearch(int pos) {
AdapterItem item = new AdapterItem();
item.viewType = AllAppsGridAdapter.EMPTY_SEARCH_VIEW_TYPE;
item.position = pos;
return item;
}
