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platform_packages_apps_Launcher3
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Add LAUNCHER_FOLDER_LABEL_CHANGED events for folder label updates. 

Sample Logs for all update combinations: https://docs.google.com/document/d/1CBP2yTcXdFhPdNG5ZmWFKSgd8mDbMevY-akVlUXPLDo/edit#bookmark=id.7y1p8n2dz8ge

Bug: 155410872
Bug: 152978018
Change-Id: I296b124b16aa07878f2cf7b74ab91f13b8e6cfbf
This commit is contained in:
thiruram 2020-05-08 17:53:19 -07:00
parent 77f5efe1a3
commit f95f152971
7 changed files with 248 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
protos/launcher_atom.proto
View File

@ -99,13 +99,14 @@ message FolderIcon {
optional int32 cardinality = 1;
// State of the folder label before the event.
optional FromState from_state = 2;
optional FromState from_label_state = 2;
// State of the folder label after the event.
optional ToState to_state = 3;
optional ToState to_label_state = 3;
// Populated only when folder label was suggested.
optional string label = 4;
// Details about actual folder label.
// Populated when folder label is not a PII.
optional string label_info = 4;
}
//////////////////////////////////////////////
@ -131,70 +132,77 @@ message FolderContainer {
}
}
// Represents state of FolderLabel before editing.
// Represents state of EditText field before update.
enum FromState {
// Default value.
// Used when a FromState is not applicable, for example, during folder creation.
FROM_STATE_UNSPECIFIED = 0;
// FolderLabel was empty.
// EditText was empty.
// Eg: When a folder label is updated from empty string.
FROM_EMPTY = 1;
// FolderLabel was non-empty and manually entered by the user.
// EditText was non-empty and manually entered by the user.
// Eg: When a folder label is updated from a user-entered value.
FROM_CUSTOM = 2;
// FolderLabel was non-empty and one of the suggestions.
// EditText was non-empty and one of the suggestions.
// Eg: When a folder label is updated from a suggested value.
FROM_SUGGESTED = 3;
}
// Represents state of FolderLabel after editing.
// Represents state of EditText field after update.
enum ToState {
// Default value.
// Used when ToState is not applicable, for example, when folder label is updated to a different
// value when folder label suggestion feature is disabled.
TO_STATE_UNSPECIFIED = 0;
// User attempted to change the folder label, but was not changed.
// User attempted to change the EditText, but was not changed.
UNCHANGED = 1;
// New label matches with primary(aka top) suggestion.
TO_SUGGESTION0 = 2;
// New label matches with second top suggestion even though the top suggestion was non-empty.
// New value matches with second top suggestion even though the top suggestion was non-empty.
TO_SUGGESTION1_WITH_VALID_PRIMARY = 3;
// New label matches with second top suggestion given that top suggestion was empty.
// New value matches with second top suggestion given that top suggestion was empty.
TO_SUGGESTION1_WITH_EMPTY_PRIMARY = 4;
// New label matches with third top suggestion even though the top suggestion was non-empty.
// New value matches with third top suggestion even though the top suggestion was non-empty.
TO_SUGGESTION2_WITH_VALID_PRIMARY = 5;
// New label matches with third top suggestion given that top suggestion was empty.
// New value matches with third top suggestion given that top suggestion was empty.
TO_SUGGESTION2_WITH_EMPTY_PRIMARY = 6;
// New label matches with 4th top suggestion even though the top suggestion was non-empty.
// New value matches with 4th top suggestion even though the top suggestion was non-empty.
TO_SUGGESTION3_WITH_VALID_PRIMARY = 7;
// New label matches with 4th top suggestion given that top suggestion was empty.
// New value matches with 4th top suggestion given that top suggestion was empty.
TO_SUGGESTION3_WITH_EMPTY_PRIMARY = 8;
// New label is empty even though the top suggestion was non-empty.
// New value is empty even though the top suggestion was non-empty.
TO_EMPTY_WITH_VALID_PRIMARY = 9;
// New label is empty given that top suggestion was empty.
// New value is empty given that top suggestion was empty.
TO_EMPTY_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY = 10;
// New label is empty given that no suggestions were provided.
// New value is empty given that no suggestions were provided.
TO_EMPTY_WITH_EMPTY_SUGGESTIONS = 11;
// New label is empty given that suggestions feature was disabled.
// New value is empty given that suggestions feature was disabled.
TO_EMPTY_WITH_SUGGESTIONS_DISABLED = 12;
// New label is non-empty and does not match with any of the suggestions even though the top suggestion was non-empty.
// New value is non-empty and does not match with any of the suggestions even though the top suggestion was non-empty.
TO_CUSTOM_WITH_VALID_PRIMARY = 13;
// New label is non-empty and not match with any suggestions given that top suggestion was empty.
// New value is non-empty and not match with any suggestions given that top suggestion was empty.
TO_CUSTOM_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY = 14;
// New label is non-empty and also no suggestions were provided.
// New value is non-empty and also no suggestions were provided.
TO_CUSTOM_WITH_EMPTY_SUGGESTIONS = 15;
// New label is non-empty and also suggestions feature was disable.
// New value is non-empty and also suggestions feature was disable.
TO_CUSTOM_WITH_SUGGESTIONS_DISABLED = 16;
}

2
quickstep/recents_ui_overrides/src/com/android/launcher3/hybridhotseat/HotseatEduController.java
View File

@ -121,7 +121,7 @@ public class HotseatEduController {
if (!putIntoFolder.isEmpty()) {
ItemInfo firstItem = putIntoFolder.get(0);
FolderInfo folderInfo = new FolderInfo();
folderInfo.title = "";
folderInfo.setTitle("");
mLauncher.getModelWriter().addItemToDatabase(folderInfo, firstItem.container,
firstItem.screenId, firstItem.cellX, firstItem.cellY);
folderInfo.contents.addAll(putIntoFolder);

28
src/com/android/launcher3/folder/Folder.java
View File

@ -24,6 +24,8 @@ import static com.android.launcher3.LauncherState.NORMAL;
import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent;
import static com.android.launcher3.config.FeatureFlags.ALWAYS_USE_HARDWARE_OPTIMIZATION_FOR_FOLDER_ANIMATIONS;
import static com.android.launcher3.logging.LoggerUtils.newContainerTarget;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_LABEL_UPDATED;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ITEM_DROP_COMPLETED;
import static com.android.launcher3.model.data.FolderInfo.FLAG_MANUAL_FOLDER_NAME;
import static java.util.Arrays.asList;
@ -196,6 +198,7 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
@Thunk int mScrollHintDir = SCROLL_NONE;
@Thunk int mCurrentScrollDir = SCROLL_NONE;
private StatsLogManager mStatsLogManager;
/**
* Used to inflate the Workspace from XML.
@ -208,10 +211,12 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
setAlwaysDrawnWithCacheEnabled(false);
mLauncher = Launcher.getLauncher(context);
mStatsLogManager = StatsLogManager.newInstance(context);
// We need this view to be focusable in touch mode so that when text editing of the folder
// name is complete, we have something to focus on, thus hiding the cursor and giving
// reliable behavior when clicking the text field (since it will always gain focus on click).
setFocusableInTouchMode(true);
}
@Override
@ -329,8 +334,8 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
if (DEBUG) {
Log.d(TAG, "onBackKey newTitle=" + newTitle);
}
mInfo.previousTitle = mInfo.title;
mInfo.title = newTitle;
mInfo.setTitle(newTitle);
mInfo.fromCustom = mInfo.hasOption(FLAG_MANUAL_FOLDER_NAME);
mInfo.setOption(FLAG_MANUAL_FOLDER_NAME, !mInfo.getAcceptedSuggestionIndex().isPresent(),
mLauncher.getModelWriter());
mFolderIcon.onTitleChanged(newTitle);
@ -1326,10 +1331,8 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
if (d.stateAnnouncer != null) {
d.stateAnnouncer.completeAction(R.string.item_moved);
}
StatsLogManager.newInstance(getContext())
.log(StatsLogManager.LauncherEvent.LAUNCHER_ITEM_DROP_COMPLETED,
d.logInstanceId,
d.dragInfo.buildProto(mInfo));
mStatsLogManager
.log(LAUNCHER_ITEM_DROP_COMPLETED, d.logInstanceId, d.dragInfo.buildProto(mInfo));
}
// This is used so the item doesn't immediately appear in the folder when added. In one case
@ -1434,6 +1437,8 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
if (hasFocus) {
startEditingFolderName();
} else {
mStatsLogManager.log(LAUNCHER_FOLDER_LABEL_UPDATED, mInfo.buildProto());
logFolderLabelState();
mFolderName.dispatchBackKey();
}
}
@ -1631,4 +1636,15 @@ public class Folder extends AbstractFloatingView implements ClipPathView, DragSo
public FolderPagedView getContent() {
return mContent;
}
/**
* Logs current folder label info.
*
* @deprecated This method is only used for log validation and soon will be removed.
*/
@Deprecated
public void logFolderLabelState() {
mLauncher.getUserEventDispatcher()
.logLauncherEvent(mInfo.getFolderLabelStateLauncherEvent());
}
}

8
src/com/android/launcher3/folder/FolderIcon.java
View File

@ -20,7 +20,7 @@ import static android.text.TextUtils.isEmpty;
import static com.android.launcher3.folder.ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
import static com.android.launcher3.folder.PreviewItemManager.INITIAL_ITEM_ANIMATION_DURATION;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_LABEL_CHANGED;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_LABEL_UPDATED;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
@ -429,6 +429,7 @@ public class FolderIcon extends FrameLayout implements FolderListener, IconLabel
mPreviewItemManager.hidePreviewItem(finalIndex, false);
mFolder.showItem(item);
setLabelSuggestion(nameInfos, instanceId);
mFolder.logFolderLabelState();
invalidate();
}, DROP_IN_ANIMATION_DURATION);
}
@ -447,10 +448,9 @@ public class FolderIcon extends FrameLayout implements FolderListener, IconLabel
if (nameInfos == null || nameInfos[0] == null || isEmpty(nameInfos[0].getLabel())) {
return;
}
mInfo.previousTitle = mInfo.title;
mInfo.title = nameInfos[0].getLabel();
mInfo.setTitle(nameInfos[0].getLabel());
StatsLogManager.newInstance(getContext())
.log(LAUNCHER_FOLDER_LABEL_CHANGED, instanceId, mInfo.getFolderIconAtom());
.log(LAUNCHER_FOLDER_LABEL_UPDATED, instanceId, mInfo.buildProto());
onTitleChanged(mInfo.title);
mFolder.mFolderName.setText(mInfo.title);
mFolder.mLauncher.getModelWriter().updateItemInDatabase(mInfo);

6
src/com/android/launcher3/logging/StatsLogManager.java
View File

@ -57,9 +57,9 @@ public class StatsLogManager implements ResourceBasedOverride {
+ "resulting in a new folder creation")
LAUNCHER_ITEM_DROP_FOLDER_CREATED(386),
@LauncherUiEvent(doc = "A dragged launcher item is successfully dropped on another item "
+ "resulting in new folder creation")
LAUNCHER_FOLDER_LABEL_CHANGED(460),
@LauncherUiEvent(doc = "User action resulted in or manually updated the folder label to "
+ "new/same value.")
LAUNCHER_FOLDER_LABEL_UPDATED(460),
@LauncherUiEvent(doc = "A dragged item is dropped on 'Remove' button in the target bar")
LAUNCHER_ITEM_DROPPED_ON_REMOVE(465),

196
src/com/android/launcher3/model/data/FolderInfo.java
View File

@ -20,6 +20,13 @@ import static android.text.TextUtils.isEmpty;
import static androidx.core.util.Preconditions.checkNotNull;
import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_DESKTOP;
import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT;
import static com.android.launcher3.userevent.LauncherLogProto.Target.FromFolderLabelState.FROM_CUSTOM;
import static com.android.launcher3.userevent.LauncherLogProto.Target.FromFolderLabelState.FROM_EMPTY;
import static com.android.launcher3.userevent.LauncherLogProto.Target.FromFolderLabelState.FROM_FOLDER_LABEL_STATE_UNSPECIFIED;
import static com.android.launcher3.userevent.LauncherLogProto.Target.FromFolderLabelState.FROM_SUGGESTED;
import static java.util.Arrays.stream;
import static java.util.Optional.ofNullable;
@ -32,13 +39,20 @@ import com.android.launcher3.Utilities;
import com.android.launcher3.config.FeatureFlags;
import com.android.launcher3.folder.FolderNameInfo;
import com.android.launcher3.logger.LauncherAtom;
import com.android.launcher3.logger.LauncherAtom.FromState;
import com.android.launcher3.logger.LauncherAtom.ToState;
import com.android.launcher3.model.ModelWriter;
import com.android.launcher3.userevent.LauncherLogProto;
import com.android.launcher3.userevent.LauncherLogProto.Target;
import com.android.launcher3.userevent.LauncherLogProto.Target.FromFolderLabelState;
import com.android.launcher3.userevent.LauncherLogProto.Target.ToFolderLabelState;
import com.android.launcher3.util.ContentWriter;
import java.util.ArrayList;
import java.util.Objects;
import java.util.Optional;
import java.util.OptionalInt;
import java.util.StringJoiner;
import java.util.stream.IntStream;
@ -72,9 +86,19 @@ public class FolderInfo extends ItemInfo {
public Intent suggestedFolderNames;
// When title changes, previous title is stored.
// Represents the title before current.
// Primarily used for logging purpose.
public CharSequence previousTitle;
private CharSequence mPreviousTitle;
// True if the title before was manually entered, suggested otherwise.
// Primarily used for logging purpose.
public boolean fromCustom;
/**
* Used for separating {@link #mPreviousTitle} and {@link #title} when concatenating them
* for logging.
*/
private static final CharSequence FOLDER_LABEL_DELIMITER = "=>";
/**
* The apps and shortcuts
@ -179,9 +203,20 @@ public class FolderInfo extends ItemInfo {
@Override
public LauncherAtom.ItemInfo buildProto(FolderInfo fInfo) {
return getDefaultItemInfoBuilder()
.setFolderIcon(LauncherAtom.FolderIcon.newBuilder().setCardinality(contents.size()))
.setContainerInfo(getContainerInfo())
.build();
.setFolderIcon(LauncherAtom.FolderIcon.newBuilder().setCardinality(contents.size()))
.setRank(rank)
.setContainerInfo(getContainerInfo())
.build();
}
@Override
public void setTitle(CharSequence title) {
mPreviousTitle = this.title;
this.title = title;
}
public CharSequence getPreviousTitle() {
return mPreviousTitle;
}
@Override
@ -193,19 +228,30 @@ public class FolderInfo extends ItemInfo {
}
/**
* Returns {@link LauncherAtom.FolderIcon} wrapped as {@link LauncherAtom.ItemInfo} for logging
* into Westworld.
*
* Returns {@link LauncherAtom.FolderIcon} wrapped as {@link LauncherAtom.ItemInfo} for logging.
*/
public LauncherAtom.ItemInfo getFolderIconAtom() {
LauncherAtom.ToState toFolderLabelState = getToFolderLabelState();
@Override
public LauncherAtom.ItemInfo buildProto() {
FromState fromFolderLabelState = getFromFolderLabelState();
ToState toFolderLabelState = getToFolderLabelState();
LauncherAtom.FolderIcon.Builder folderIconBuilder = LauncherAtom.FolderIcon.newBuilder()
.setCardinality(contents.size())
.setFromState(getFromFolderLabelState())
.setToState(toFolderLabelState);
if (toFolderLabelState.toString().startsWith("TO_SUGGESTION")) {
folderIconBuilder.setLabel(title.toString());
.setFromLabelState(fromFolderLabelState)
.setToLabelState(toFolderLabelState);
// If the folder label is suggested, it is logged to improve prediction model.
// When both old and new labels are logged together delimiter is used.
StringJoiner labelInfoBuilder = new StringJoiner(FOLDER_LABEL_DELIMITER);
if (fromFolderLabelState.equals(FromState.FROM_SUGGESTED)) {
labelInfoBuilder.add(mPreviousTitle);
}
if (toFolderLabelState.toString().startsWith("TO_SUGGESTION")) {
labelInfoBuilder.add(title);
}
if (labelInfoBuilder.length() > 0) {
folderIconBuilder.setLabelInfo(labelInfoBuilder.toString());
}
return getDefaultItemInfoBuilder()
.setFolderIcon(folderIconBuilder)
.setContainerInfo(getContainerInfo())
@ -236,7 +282,7 @@ public class FolderInfo extends ItemInfo {
return LauncherAtom.ToState.TO_STATE_UNSPECIFIED;
}
if (title.equals(previousTitle)) {
if (title.equals(mPreviousTitle)) {
return LauncherAtom.ToState.UNCHANGED;
}
@ -290,13 +336,13 @@ public class FolderInfo extends ItemInfo {
}
private LauncherAtom.FromState getFromFolderLabelState() {
return previousTitle == null
return mPreviousTitle == null
? LauncherAtom.FromState.FROM_STATE_UNSPECIFIED
: previousTitle.toString().isEmpty()
? LauncherAtom.FromState.FROM_EMPTY
: hasOption(FLAG_MANUAL_FOLDER_NAME)
? LauncherAtom.FromState.FROM_CUSTOM
: LauncherAtom.FromState.FROM_SUGGESTED;
: mPreviousTitle.length() == 0
? LauncherAtom.FromState.FROM_EMPTY
: fromCustom
? LauncherAtom.FromState.FROM_CUSTOM
: LauncherAtom.FromState.FROM_SUGGESTED;
}
private Optional<String[]> getSuggestedLabels() {
@ -312,4 +358,112 @@ public class FolderInfo extends ItemInfo {
.map(CharSequence::toString)
.toArray(String[]::new));
}
/**
* Returns {@link LauncherLogProto.LauncherEvent} to log current folder label info.
*
* @deprecated This method is used only for validation purpose and soon will be removed.
*/
@Deprecated
public LauncherLogProto.LauncherEvent getFolderLabelStateLauncherEvent() {
return LauncherLogProto.LauncherEvent.newBuilder()
.setAction(LauncherLogProto.Action
.newBuilder()
.setType(LauncherLogProto.Action.Type.SOFT_KEYBOARD))
.addSrcTarget(Target
.newBuilder()
.setType(Target.Type.ITEM)
.setItemType(LauncherLogProto.ItemType.EDITTEXT)
.setFromFolderLabelState(convertFolderLabelState(getFromFolderLabelState()))
.setToFolderLabelState(convertFolderLabelState(getToFolderLabelState())))
.addSrcTarget(Target.newBuilder()
.setType(Target.Type.CONTAINER)
.setContainerType(LauncherLogProto.ContainerType.FOLDER)
.setPageIndex(screenId)
.setGridX(cellX)
.setGridY(cellY)
.setCardinality(contents.size()))
.addSrcTarget(newParentContainerTarget())
.build();
}
/**
* @deprecated This method is used only for validation purpose and soon will be removed.
*/
@Deprecated
private Target.Builder newParentContainerTarget() {
Target.Builder builder = Target.newBuilder().setType(Target.Type.CONTAINER);
switch (container) {
case CONTAINER_HOTSEAT:
return builder.setContainerType(LauncherLogProto.ContainerType.HOTSEAT);
case CONTAINER_DESKTOP:
return builder.setContainerType(LauncherLogProto.ContainerType.WORKSPACE);
default:
throw new AssertionError(String
.format("Expected container to be either %s or %s but found %s.",
CONTAINER_HOTSEAT,
CONTAINER_DESKTOP,
container));
}
}
/**
* @deprecated This method is used only for validation purpose and soon will be removed.
*/
@Deprecated
private static FromFolderLabelState convertFolderLabelState(FromState fromState) {
switch (fromState) {
case FROM_EMPTY:
return FROM_EMPTY;
case FROM_SUGGESTED:
return FROM_SUGGESTED;
case FROM_CUSTOM:
return FROM_CUSTOM;
default:
return FROM_FOLDER_LABEL_STATE_UNSPECIFIED;
}
}
/**
* @deprecated This method is used only for validation purpose and soon will be removed.
*/
@Deprecated
private static ToFolderLabelState convertFolderLabelState(ToState toState) {
switch (toState) {
case UNCHANGED:
return ToFolderLabelState.UNCHANGED;
case TO_SUGGESTION0:
return ToFolderLabelState.TO_SUGGESTION0_WITH_VALID_PRIMARY;
case TO_SUGGESTION1_WITH_VALID_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION1_WITH_VALID_PRIMARY;
case TO_SUGGESTION1_WITH_EMPTY_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION1_WITH_EMPTY_PRIMARY;
case TO_SUGGESTION2_WITH_VALID_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION2_WITH_VALID_PRIMARY;
case TO_SUGGESTION2_WITH_EMPTY_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION2_WITH_EMPTY_PRIMARY;
case TO_SUGGESTION3_WITH_VALID_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION3_WITH_VALID_PRIMARY;
case TO_SUGGESTION3_WITH_EMPTY_PRIMARY:
return ToFolderLabelState.TO_SUGGESTION3_WITH_EMPTY_PRIMARY;
case TO_EMPTY_WITH_VALID_PRIMARY:
return ToFolderLabelState.TO_EMPTY_WITH_VALID_PRIMARY;
case TO_EMPTY_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY:
return ToFolderLabelState.TO_EMPTY_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY;
case TO_EMPTY_WITH_EMPTY_SUGGESTIONS:
return ToFolderLabelState.TO_EMPTY_WITH_EMPTY_SUGGESTIONS;
case TO_EMPTY_WITH_SUGGESTIONS_DISABLED:
return ToFolderLabelState.TO_EMPTY_WITH_SUGGESTIONS_DISABLED;
case TO_CUSTOM_WITH_VALID_PRIMARY:
return ToFolderLabelState.TO_CUSTOM_WITH_VALID_PRIMARY;
case TO_CUSTOM_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY:
return ToFolderLabelState.TO_CUSTOM_WITH_VALID_SUGGESTIONS_AND_EMPTY_PRIMARY;
case TO_CUSTOM_WITH_EMPTY_SUGGESTIONS:
return ToFolderLabelState.TO_CUSTOM_WITH_EMPTY_SUGGESTIONS;
case TO_CUSTOM_WITH_SUGGESTIONS_DISABLED:
return ToFolderLabelState.TO_CUSTOM_WITH_SUGGESTIONS_DISABLED;
default:
return ToFolderLabelState.TO_FOLDER_LABEL_STATE_UNSPECIFIED;
}
}
}

11
src/com/android/launcher3/model/data/ItemInfo.java
View File

@ -249,6 +249,13 @@ public class ItemInfo {
public void setItemBuilder(LauncherAtom.ItemInfo.Builder builder) {
}
/**
* Creates {@link LauncherAtom.ItemInfo} with important fields and parent container info.
*/
public LauncherAtom.ItemInfo buildProto() {
return buildProto(null);
}
/**
* Creates {@link LauncherAtom.ItemInfo} with important fields and parent container info.
*/
@ -345,4 +352,8 @@ public class ItemInfo {
itemInfo.copyFrom(this);
return itemInfo;
}
public void setTitle(CharSequence title) {
this.title = title;
}
}