diff options
Diffstat (limited to 'src/com/android/launcher3/allapps/AlphabeticalAppsList.java')
| -rw-r--r-- | src/com/android/launcher3/allapps/AlphabeticalAppsList.java | 590 |
1 files changed, 590 insertions, 0 deletions
diff --git a/src/com/android/launcher3/allapps/AlphabeticalAppsList.java b/src/com/android/launcher3/allapps/AlphabeticalAppsList.java new file mode 100644 index 000000000..47241ce5d --- /dev/null +++ b/src/com/android/launcher3/allapps/AlphabeticalAppsList.java @@ -0,0 +1,590 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.android.launcher3.allapps; + +import android.content.Context; +import android.support.v7.widget.RecyclerView; +import android.util.Log; +import com.android.launcher3.AppInfo; +import com.android.launcher3.Launcher; +import com.android.launcher3.LauncherAppState; +import com.android.launcher3.compat.AlphabeticIndexCompat; +import com.android.launcher3.compat.UserHandleCompat; +import com.android.launcher3.model.AppNameComparator; +import com.android.launcher3.util.ComponentKey; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Locale; +import java.util.Map; +import java.util.TreeMap; + +/** + * The alphabetically sorted list of applications. + */ +public class AlphabeticalAppsList { + + public static final String TAG = "AlphabeticalAppsList"; + private static final boolean DEBUG = false; + private static final boolean DEBUG_PREDICTIONS = false; + + /** + * Info about a section in the alphabetic list + */ + public static class SectionInfo { + // The number of applications in this section + public int numApps; + // The section break AdapterItem for this section + public AdapterItem sectionBreakItem; + // The first app AdapterItem for this section + public AdapterItem firstAppItem; + } + + /** + * Info about a fast scroller section, depending if sections are merged, the fast scroller + * sections will not be the same set as the section headers. + */ + public static class FastScrollSectionInfo { + // The section name + public String sectionName; + // The AdapterItem to scroll to for this section + public AdapterItem fastScrollToItem; + // The touch fraction that should map to this fast scroll section info + public float touchFraction; + + public FastScrollSectionInfo(String sectionName) { + this.sectionName = sectionName; + } + } + + /** + * Info about a particular adapter item (can be either section or app) + */ + public static class AdapterItem { + /** Common properties */ + // The index of this adapter item in the list + public int position; + // The type of this item + public int viewType; + // The row that this item shows up on + public int rowIndex; + + /** Section & App properties */ + // The section for this item + public SectionInfo sectionInfo; + + /** App-only properties */ + // The section name of this app. Note that there can be multiple items with different + // sectionNames in the same section + public String sectionName = null; + // The index of this app in the section + public int sectionAppIndex = -1; + // The index of this app in the row + public int rowAppIndex; + // The associated AppInfo for the app + public AppInfo appInfo = null; + // The index of this app not including sections + public int appIndex = -1; + + 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; + } + + 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; + } + + 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; + } + } + + /** + * Common interface for different merging strategies. + */ + public interface MergeAlgorithm { + boolean continueMerging(SectionInfo section, SectionInfo withSection, + int sectionAppCount, int numAppsPerRow, int mergeCount); + } + + private Launcher mLauncher; + + // The set of apps from the system not including predictions + private final List<AppInfo> mApps = new ArrayList<>(); + private final HashMap<ComponentKey, AppInfo> mComponentToAppMap = new HashMap<>(); + + // The set of filtered apps with the current filter + private List<AppInfo> mFilteredApps = new ArrayList<>(); + // The current set of adapter items + private List<AdapterItem> mAdapterItems = new ArrayList<>(); + // The set of sections for the apps with the current filter + private List<SectionInfo> mSections = new ArrayList<>(); + // The set of sections that we allow fast-scrolling to (includes non-merged sections) + private List<FastScrollSectionInfo> mFastScrollerSections = new ArrayList<>(); + // The set of predicted app component names + private List<ComponentKey> mPredictedAppComponents = new ArrayList<>(); + // The set of predicted apps resolved from the component names and the current set of apps + private List<AppInfo> mPredictedApps = new ArrayList<>(); + // The of ordered component names as a result of a search query + private ArrayList<ComponentKey> mSearchResults; + private HashMap<CharSequence, String> mCachedSectionNames = new HashMap<>(); + private RecyclerView.Adapter mAdapter; + private AlphabeticIndexCompat mIndexer; + private AppNameComparator mAppNameComparator; + private MergeAlgorithm mMergeAlgorithm; + private int mNumAppsPerRow; + private int mNumPredictedAppsPerRow; + private int mNumAppRowsInAdapter; + + public AlphabeticalAppsList(Context context) { + mLauncher = (Launcher) context; + mIndexer = new AlphabeticIndexCompat(context); + mAppNameComparator = new AppNameComparator(context); + } + + /** + * Sets the number of apps per row. + */ + public void setNumAppsPerRow(int numAppsPerRow, int numPredictedAppsPerRow, + MergeAlgorithm mergeAlgorithm) { + mNumAppsPerRow = numAppsPerRow; + mNumPredictedAppsPerRow = numPredictedAppsPerRow; + mMergeAlgorithm = mergeAlgorithm; + + updateAdapterItems(); + } + + /** + * Sets the adapter to notify when this dataset changes. + */ + public void setAdapter(RecyclerView.Adapter adapter) { + mAdapter = adapter; + } + + /** + * Returns all the apps. + */ + public List<AppInfo> getApps() { + return mApps; + } + + /** + * Returns sections of all the current filtered applications. + */ + public List<SectionInfo> getSections() { + return mSections; + } + + /** + * Returns fast scroller sections of all the current filtered applications. + */ + public List<FastScrollSectionInfo> getFastScrollerSections() { + return mFastScrollerSections; + } + + /** + * Returns the current filtered list of applications broken down into their sections. + */ + public List<AdapterItem> getAdapterItems() { + return mAdapterItems; + } + + /** + * Returns the number of applications in this list. + */ + public int getSize() { + return mFilteredApps.size(); + } + + /** + * Returns the number of rows of applications (not including predictions) + */ + public int getNumAppRows() { + return mNumAppRowsInAdapter; + } + + /** + * Returns whether there are is a filter set. + */ + public boolean hasFilter() { + return (mSearchResults != null); + } + + /** + * Returns whether there are no filtered results. + */ + public boolean hasNoFilteredResults() { + return (mSearchResults != null) && mFilteredApps.isEmpty(); + } + + /** + * Sets the sorted list of filtered components. + */ + public void setOrderedFilter(ArrayList<ComponentKey> f) { + if (mSearchResults != f) { + mSearchResults = f; + updateAdapterItems(); + } + } + + /** + * Sets the current set of predicted apps. Since this can be called before we get the full set + * of applications, we should merge the results only in onAppsUpdated() which is idempotent. + */ + public void setPredictedApps(List<ComponentKey> apps) { + mPredictedAppComponents.clear(); + mPredictedAppComponents.addAll(apps); + onAppsUpdated(); + } + + /** + * Sets the current set of apps. + */ + public void setApps(List<AppInfo> apps) { + mComponentToAppMap.clear(); + addApps(apps); + } + + /** + * Adds new apps to the list. + */ + public void addApps(List<AppInfo> apps) { + updateApps(apps); + } + + /** + * Updates existing apps in the list + */ + public void updateApps(List<AppInfo> apps) { + for (AppInfo app : apps) { + mComponentToAppMap.put(app.toComponentKey(), app); + } + onAppsUpdated(); + } + + /** + * Removes some apps from the list. + */ + public void removeApps(List<AppInfo> apps) { + for (AppInfo app : apps) { + mComponentToAppMap.remove(app.toComponentKey()); + } + onAppsUpdated(); + } + + /** + * Updates internals when the set of apps are updated. + */ + private void onAppsUpdated() { + // Sort the list of apps + mApps.clear(); + mApps.addAll(mComponentToAppMap.values()); + Collections.sort(mApps, mAppNameComparator.getAppInfoComparator()); + + // As a special case for some languages (currently only Simplified Chinese), we may need to + // coalesce sections + Locale curLocale = mLauncher.getResources().getConfiguration().locale; + TreeMap<String, ArrayList<AppInfo>> sectionMap = null; + boolean localeRequiresSectionSorting = curLocale.equals(Locale.SIMPLIFIED_CHINESE); + if (localeRequiresSectionSorting) { + // Compute the section headers. We use a TreeMap with the section name comparator to + // ensure that the sections are ordered when we iterate over it later + sectionMap = new TreeMap<>(mAppNameComparator.getSectionNameComparator()); + for (AppInfo info : mApps) { + // Add the section to the cache + String sectionName = getAndUpdateCachedSectionName(info.title); + + // Add it to the mapping + ArrayList<AppInfo> sectionApps = sectionMap.get(sectionName); + if (sectionApps == null) { + sectionApps = new ArrayList<>(); + sectionMap.put(sectionName, sectionApps); + } + sectionApps.add(info); + } + + // Add each of the section apps to the list in order + List<AppInfo> allApps = new ArrayList<>(mApps.size()); + for (Map.Entry<String, ArrayList<AppInfo>> entry : sectionMap.entrySet()) { + allApps.addAll(entry.getValue()); + } + + mApps.clear(); + mApps.addAll(allApps); + } else { + // Just compute the section headers for use below + for (AppInfo info : mApps) { + // Add the section to the cache + getAndUpdateCachedSectionName(info.title); + } + } + + // Recompose the set of adapter items from the current set of apps + updateAdapterItems(); + } + + /** + * 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); + } + + // 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 based on the number of rows + 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; + } + } + + // Refresh the recycler view + if (mAdapter != null) { + mAdapter.notifyDataSetChanged(); + } + } + + private List<AppInfo> getFiltersAppInfos() { + if (mSearchResults == null) { + return mApps; + } + + ArrayList<AppInfo> result = new ArrayList<>(); + for (ComponentKey key : mSearchResults) { + AppInfo match = mComponentToAppMap.get(key); + if (match != null) { + result.add(match); + } + } + return result; + } + + /** + * 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++; + } + } + } + } + + /** + * Returns the cached section name for the given title, recomputing and updating the cache if + * the title has no cached section name. + */ + private String getAndUpdateCachedSectionName(CharSequence title) { + String sectionName = mCachedSectionNames.get(title); + if (sectionName == null) { + sectionName = mIndexer.computeSectionName(title); + mCachedSectionNames.put(title, sectionName); + } + return sectionName; + } +} |