Files
Lawnchair/src/com/android/launcher3/folder/Folder.java
T
Jon Miranda 447ea429cd Fix folder crash where view is added when it already has a parent.
The fix is to prevent re-arrangement if the views are already unbound.

This is caused when:
- Folder is open
- Item has deep shortcuts
- Long press on deep shortcut to create DragView that could land in the
  folder if the folder did not auto close. This is important because it
  starts a drag within the folder

The folder unbinds all views as part of the Folder close complete callback.
And then the folder exit alarm gets triggered (because we drag DragView
outside of the folder) which causes the folder items to get
rearranged and added back to the folder's CellLayout.

Bug: 161559911
Change-Id: I142589b2c541dc21c47a67c20a93e627732107ef
2020-07-20 16:54:17 -07:00

1681 lines
62 KiB
Java

/*
* Copyright (C) 2008 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.folder;
import static android.text.TextUtils.isEmpty;
import static com.android.launcher3.LauncherAnimUtils.SPRING_LOADED_EXIT_DELAY;
import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT;
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 android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.annotation.SuppressLint;
import android.appwidget.AppWidgetHostView;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Path;
import android.graphics.Rect;
import android.text.InputType;
import android.text.Selection;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Pair;
import android.view.FocusFinder;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.EditorInfo;
import android.widget.TextView;
import com.android.launcher3.AbstractFloatingView;
import com.android.launcher3.Alarm;
import com.android.launcher3.BubbleTextView;
import com.android.launcher3.CellLayout;
import com.android.launcher3.DeviceProfile;
import com.android.launcher3.DragSource;
import com.android.launcher3.DropTarget;
import com.android.launcher3.ExtendedEditText;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherSettings;
import com.android.launcher3.OnAlarmListener;
import com.android.launcher3.PagedView;
import com.android.launcher3.R;
import com.android.launcher3.ShortcutAndWidgetContainer;
import com.android.launcher3.Utilities;
import com.android.launcher3.Workspace;
import com.android.launcher3.Workspace.ItemOperator;
import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
import com.android.launcher3.accessibility.FolderAccessibilityHelper;
import com.android.launcher3.config.FeatureFlags;
import com.android.launcher3.dragndrop.DragController;
import com.android.launcher3.dragndrop.DragController.DragListener;
import com.android.launcher3.dragndrop.DragLayer;
import com.android.launcher3.dragndrop.DragOptions;
import com.android.launcher3.logger.LauncherAtom.FromState;
import com.android.launcher3.logger.LauncherAtom.ToState;
import com.android.launcher3.logging.StatsLogManager;
import com.android.launcher3.logging.StatsLogManager.StatsLogger;
import com.android.launcher3.model.data.AppInfo;
import com.android.launcher3.model.data.FolderInfo;
import com.android.launcher3.model.data.FolderInfo.FolderListener;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.model.data.WorkspaceItemInfo;
import com.android.launcher3.pageindicators.PageIndicatorDots;
import com.android.launcher3.userevent.nano.LauncherLogProto;
import com.android.launcher3.util.Executors;
import com.android.launcher3.util.Thunk;
import com.android.launcher3.views.ClipPathView;
import com.android.launcher3.widget.PendingAddShortcutInfo;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Objects;
import java.util.StringJoiner;
import java.util.stream.Collectors;
import java.util.stream.Stream;
/**
* Represents a set of icons chosen by the user or generated by the system.
*/
public class Folder extends AbstractFloatingView implements ClipPathView, DragSource,
View.OnLongClickListener, DropTarget, FolderListener, TextView.OnEditorActionListener,
View.OnFocusChangeListener, DragListener, ExtendedEditText.OnBackKeyListener {
private static final String TAG = "Launcher.Folder";
private static final boolean DEBUG = false;
/**
* Used for separating folder title when logging together.
*/
private static final CharSequence FOLDER_LABEL_DELIMITER = "~";
/**
* We avoid measuring {@link #mContent} with a 0 width or height, as this
* results in CellLayout being measured as UNSPECIFIED, which it does not support.
*/
private static final int MIN_CONTENT_DIMEN = 5;
static final int STATE_NONE = -1;
static final int STATE_SMALL = 0;
static final int STATE_ANIMATING = 1;
static final int STATE_OPEN = 2;
/**
* Time for which the scroll hint is shown before automatically changing page.
*/
public static final int SCROLL_HINT_DURATION = 500;
public static final int RESCROLL_DELAY = PagedView.PAGE_SNAP_ANIMATION_DURATION + 150;
public static final int SCROLL_NONE = -1;
public static final int SCROLL_LEFT = 0;
public static final int SCROLL_RIGHT = 1;
/**
* Fraction of icon width which behave as scroll region.
*/
private static final float ICON_OVERSCROLL_WIDTH_FACTOR = 0.45f;
private static final int FOLDER_NAME_ANIMATION_DURATION = 633;
private static final int REORDER_DELAY = 250;
private static final int ON_EXIT_CLOSE_DELAY = 400;
private static final Rect sTempRect = new Rect();
private static final int MIN_FOLDERS_FOR_HARDWARE_OPTIMIZATION = 10;
private final Alarm mReorderAlarm = new Alarm();
private final Alarm mOnExitAlarm = new Alarm();
private final Alarm mOnScrollHintAlarm = new Alarm();
@Thunk final Alarm mScrollPauseAlarm = new Alarm();
@Thunk final ArrayList<View> mItemsInReadingOrder = new ArrayList<View>();
private AnimatorSet mCurrentAnimator;
private boolean mIsAnimatingClosed = false;
protected final Launcher mLauncher;
protected DragController mDragController;
public FolderInfo mInfo;
private CharSequence mFromTitle;
private FromState mFromLabelState;
@Thunk FolderIcon mFolderIcon;
@Thunk FolderPagedView mContent;
public FolderNameEditText mFolderName;
private PageIndicatorDots mPageIndicator;
protected View mFooter;
private int mFooterHeight;
// Cell ranks used for drag and drop
@Thunk int mTargetRank, mPrevTargetRank, mEmptyCellRank;
private Path mClipPath;
@ViewDebug.ExportedProperty(category = "launcher",
mapping = {
@ViewDebug.IntToString(from = STATE_NONE, to = "STATE_NONE"),
@ViewDebug.IntToString(from = STATE_SMALL, to = "STATE_SMALL"),
@ViewDebug.IntToString(from = STATE_ANIMATING, to = "STATE_ANIMATING"),
@ViewDebug.IntToString(from = STATE_OPEN, to = "STATE_OPEN"),
})
@Thunk int mState = STATE_NONE;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mRearrangeOnClose = false;
boolean mItemsInvalidated = false;
private View mCurrentDragView;
private boolean mIsExternalDrag;
private boolean mDragInProgress = false;
private boolean mDeleteFolderOnDropCompleted = false;
private boolean mSuppressFolderDeletion = false;
private boolean mItemAddedBackToSelfViaIcon = false;
private boolean mIsEditingName = false;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mDestroyed;
// Folder scrolling
private int mScrollAreaOffset;
@Thunk int mScrollHintDir = SCROLL_NONE;
@Thunk int mCurrentScrollDir = SCROLL_NONE;
private StatsLogManager mStatsLogManager;
/**
* Used to inflate the Workspace from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
*/
public Folder(Context context, AttributeSet attrs) {
super(context, attrs);
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
protected void onFinishInflate() {
super.onFinishInflate();
mContent = findViewById(R.id.folder_content);
mContent.setFolder(this);
mPageIndicator = findViewById(R.id.folder_page_indicator);
mFolderName = findViewById(R.id.folder_name);
mFolderName.setOnBackKeyListener(this);
mFolderName.setOnFocusChangeListener(this);
mFolderName.setOnEditorActionListener(this);
mFolderName.setSelectAllOnFocus(true);
mFolderName.setInputType(mFolderName.getInputType()
& ~InputType.TYPE_TEXT_FLAG_AUTO_CORRECT
| InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS
| InputType.TYPE_TEXT_FLAG_CAP_WORDS);
mFolderName.forceDisableSuggestions(true);
mFooter = findViewById(R.id.folder_footer);
// We find out how tall footer wants to be (it is set to wrap_content), so that
// we can allocate the appropriate amount of space for it.
int measureSpec = MeasureSpec.UNSPECIFIED;
mFooter.measure(measureSpec, measureSpec);
mFooterHeight = mFooter.getMeasuredHeight();
}
public boolean onLongClick(View v) {
// Return if global dragging is not enabled
if (!mLauncher.isDraggingEnabled()) return true;
return startDrag(v, new DragOptions());
}
public boolean startDrag(View v, DragOptions options) {
Object tag = v.getTag();
if (tag instanceof WorkspaceItemInfo) {
WorkspaceItemInfo item = (WorkspaceItemInfo) tag;
mEmptyCellRank = item.rank;
mCurrentDragView = v;
mDragController.addDragListener(this);
if (options.isAccessibleDrag) {
mDragController.addDragListener(new AccessibleDragListenerAdapter(
mContent, FolderAccessibilityHelper::new) {
@Override
protected void enableAccessibleDrag(boolean enable) {
super.enableAccessibleDrag(enable);
mFooter.setImportantForAccessibility(enable
? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
: IMPORTANT_FOR_ACCESSIBILITY_AUTO);
}
});
}
mLauncher.getWorkspace().beginDragShared(v, this, options);
}
return true;
}
@Override
public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) {
if (dragObject.dragSource != this) {
return;
}
mContent.removeItem(mCurrentDragView);
if (dragObject.dragInfo instanceof WorkspaceItemInfo) {
mItemsInvalidated = true;
// We do not want to get events for the item being removed, as they will get handled
// when the drop completes
try (SuppressInfoChanges s = new SuppressInfoChanges()) {
mInfo.remove((WorkspaceItemInfo) dragObject.dragInfo, true);
}
}
mDragInProgress = true;
mItemAddedBackToSelfViaIcon = false;
}
@Override
public void onDragEnd() {
if (mIsExternalDrag && mDragInProgress) {
completeDragExit();
}
mDragInProgress = false;
mDragController.removeDragListener(this);
}
public boolean isEditingName() {
return mIsEditingName;
}
public void startEditingFolderName() {
post(() -> {
if (FeatureFlags.FOLDER_NAME_SUGGEST.get()) {
showLabelSuggestions();
}
mFolderName.setHint("");
mIsEditingName = true;
});
}
@Override
public boolean onBackKey() {
// Convert to a string here to ensure that no other state associated with the text field
// gets saved.
String newTitle = mFolderName.getText().toString();
if (DEBUG) {
Log.d(TAG, "onBackKey newTitle=" + newTitle);
}
mInfo.setTitle(newTitle, mLauncher.getModelWriter());
mFolderIcon.onTitleChanged(newTitle);
if (TextUtils.isEmpty(mInfo.title)) {
mFolderName.setHint(R.string.folder_hint_text);
mFolderName.setText("");
} else {
mFolderName.setHint(null);
}
sendCustomAccessibilityEvent(
this, AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED,
getContext().getString(R.string.folder_renamed, newTitle));
// This ensures that focus is gained every time the field is clicked, which selects all
// the text and brings up the soft keyboard if necessary.
mFolderName.clearFocus();
Selection.setSelection(mFolderName.getText(), 0, 0);
mIsEditingName = false;
return true;
}
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (DEBUG) {
Log.d(TAG, "onEditorAction actionId=" + actionId + " key="
+ (event != null ? event.getKeyCode() : "null event"));
}
if (actionId == EditorInfo.IME_ACTION_DONE) {
mFolderName.dispatchBackKey();
return true;
}
return false;
}
public FolderIcon getFolderIcon() {
return mFolderIcon;
}
public void setDragController(DragController dragController) {
mDragController = dragController;
}
public void setFolderIcon(FolderIcon icon) {
mFolderIcon = icon;
}
@Override
protected void onAttachedToWindow() {
// requestFocus() causes the focus onto the folder itself, which doesn't cause visual
// effect but the next arrow key can start the keyboard focus inside of the folder, not
// the folder itself.
requestFocus();
super.onAttachedToWindow();
}
@Override
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
// When the folder gets focus, we don't want to announce the list of items.
return true;
}
@Override
public View focusSearch(int direction) {
// When the folder is focused, further focus search should be within the folder contents.
return FocusFinder.getInstance().findNextFocus(this, null, direction);
}
/**
* @return the FolderInfo object associated with this folder
*/
public FolderInfo getInfo() {
return mInfo;
}
void bind(FolderInfo info) {
mInfo = info;
mFromTitle = info.title;
mFromLabelState = info.getFromLabelState();
ArrayList<WorkspaceItemInfo> children = info.contents;
Collections.sort(children, ITEM_POS_COMPARATOR);
updateItemLocationsInDatabaseBatch(true);
DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams();
if (lp == null) {
lp = new DragLayer.LayoutParams(0, 0);
lp.customPosition = true;
setLayoutParams(lp);
}
mItemsInvalidated = true;
mInfo.addListener(this);
if (!isEmpty(mInfo.title)) {
mFolderName.setText(mInfo.title);
mFolderName.setHint(null);
} else {
mFolderName.setText("");
mFolderName.setHint(R.string.folder_hint_text);
}
// In case any children didn't come across during loading, clean up the folder accordingly
mFolderIcon.post(() -> {
if (getItemCount() <= 1) {
replaceFolderWithFinalItem();
}
});
}
/**
* Show suggested folder title in FolderEditText if the first suggestion is non-empty, push
* rest of the suggestions to InputMethodManager.
*/
private void showLabelSuggestions() {
if (mInfo.suggestedFolderNames == null) {
return;
}
if (mInfo.suggestedFolderNames.hasSuggestions()) {
// update the primary suggestion if the folder name is empty.
if (isEmpty(mFolderName.getText())) {
if (mInfo.suggestedFolderNames.hasPrimary()) {
mFolderName.setHint("");
mFolderName.setText(mInfo.suggestedFolderNames.getLabels()[0]);
mFolderName.selectAll();
}
}
mFolderName.showKeyboard();
mFolderName.displayCompletions(
Stream.of(mInfo.suggestedFolderNames.getLabels())
.filter(Objects::nonNull)
.map(Object::toString)
.filter(s -> !s.isEmpty())
.filter(s -> !s.equalsIgnoreCase(mFolderName.getText().toString()))
.collect(Collectors.toList()));
}
}
/**
* Creates a new UserFolder, inflated from R.layout.user_folder.
*
* @param launcher The main activity.
*
* @return A new UserFolder.
*/
@SuppressLint("InflateParams")
static Folder fromXml(Launcher launcher) {
return (Folder) launcher.getLayoutInflater()
.inflate(R.layout.user_folder_icon_normalized, null);
}
private void startAnimation(final AnimatorSet a) {
final Workspace workspace = mLauncher.getWorkspace();
final CellLayout currentCellLayout =
(CellLayout) workspace.getChildAt(workspace.getCurrentPage());
final boolean useHardware = shouldUseHardwareLayerForAnimation(currentCellLayout);
final boolean wasHardwareAccelerated = currentCellLayout.isHardwareLayerEnabled();
a.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
if (useHardware) {
currentCellLayout.enableHardwareLayer(true);
}
mState = STATE_ANIMATING;
mCurrentAnimator = a;
}
@Override
public void onAnimationEnd(Animator animation) {
if (useHardware) {
currentCellLayout.enableHardwareLayer(wasHardwareAccelerated);
}
mCurrentAnimator = null;
}
});
a.start();
}
private boolean shouldUseHardwareLayerForAnimation(CellLayout currentCellLayout) {
if (ALWAYS_USE_HARDWARE_OPTIMIZATION_FOR_FOLDER_ANIMATIONS.get()) return true;
int folderCount = 0;
final ShortcutAndWidgetContainer container = currentCellLayout.getShortcutsAndWidgets();
for (int i = container.getChildCount() - 1; i >= 0; --i) {
final View child = container.getChildAt(i);
if (child instanceof AppWidgetHostView) return false;
if (child instanceof FolderIcon) ++folderCount;
}
return folderCount >= MIN_FOLDERS_FOR_HARDWARE_OPTIMIZATION;
}
/**
* Opens the folder as part of a drag operation
*/
public void beginExternalDrag() {
mIsExternalDrag = true;
mDragInProgress = true;
// Since this folder opened by another controller, it might not get onDrop or
// onDropComplete. Perform cleanup once drag-n-drop ends.
mDragController.addDragListener(this);
ArrayList<WorkspaceItemInfo> items = new ArrayList<>(mInfo.contents);
mEmptyCellRank = items.size();
items.add(null); // Add an empty spot at the end
animateOpen(items, mEmptyCellRank / mContent.itemsPerPage());
}
/**
* Opens the user folder described by the specified tag. The opening of the folder
* is animated relative to the specified View. If the View is null, no animation
* is played.
*/
public void animateOpen() {
animateOpen(mInfo.contents, 0);
}
/**
* Opens the user folder described by the specified tag. The opening of the folder
* is animated relative to the specified View. If the View is null, no animation
* is played.
*/
private void animateOpen(List<WorkspaceItemInfo> items, int pageNo) {
animateOpen(items, pageNo, false);
}
/**
* Opens the user folder described by the specified tag. The opening of the folder
* is animated relative to the specified View. If the View is null, no animation
* is played.
*/
private void animateOpen(List<WorkspaceItemInfo> items, int pageNo, boolean skipUserEventLog) {
Folder openFolder = getOpen(mLauncher);
if (openFolder != null && openFolder != this) {
// Close any open folder before opening a folder.
openFolder.close(true);
}
mContent.bindItems(items);
centerAboutIcon();
mItemsInvalidated = true;
updateTextViewFocus();
mIsOpen = true;
DragLayer dragLayer = mLauncher.getDragLayer();
// Just verify that the folder hasn't already been added to the DragLayer.
// There was a one-off crash where the folder had a parent already.
if (getParent() == null) {
dragLayer.addView(this);
mDragController.addDropTarget(this);
} else {
if (FeatureFlags.IS_STUDIO_BUILD) {
Log.e(TAG, "Opening folder (" + this + ") which already has a parent:"
+ getParent());
}
}
mContent.completePendingPageChanges();
mContent.snapToPageImmediately(pageNo);
// This is set to true in close(), but isn't reset to false until onDropCompleted(). This
// leads to an inconsistent state if you drag out of the folder and drag back in without
// dropping. One resulting issue is that replaceFolderWithFinalItem() can be called twice.
mDeleteFolderOnDropCompleted = false;
if (mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
mCurrentAnimator.cancel();
}
AnimatorSet anim = new FolderAnimationManager(this, true /* isOpening */).getAnimator();
anim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
mFolderIcon.setIconVisible(false);
mFolderIcon.drawLeaveBehindIfExists();
}
@Override
public void onAnimationEnd(Animator animation) {
mState = STATE_OPEN;
announceAccessibilityChanges();
if (!skipUserEventLog) {
mLauncher.getUserEventDispatcher().logActionOnItem(
LauncherLogProto.Action.Touch.TAP,
LauncherLogProto.Action.Direction.NONE,
LauncherLogProto.ItemType.FOLDER_ICON, mInfo.cellX, mInfo.cellY);
}
mContent.setFocusOnFirstChild();
}
});
// Footer animation
if (mContent.getPageCount() > 1 && !mInfo.hasOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION)) {
int footerWidth = mContent.getDesiredWidth()
- mFooter.getPaddingLeft() - mFooter.getPaddingRight();
float textWidth = mFolderName.getPaint().measureText(mFolderName.getText().toString());
float translation = (footerWidth - textWidth) / 2;
mFolderName.setTranslationX(mContent.mIsRtl ? -translation : translation);
mPageIndicator.prepareEntryAnimation();
// Do not update the flag if we are in drag mode. The flag will be updated, when we
// actually drop the icon.
final boolean updateAnimationFlag = !mDragInProgress;
anim.addListener(new AnimatorListenerAdapter() {
@SuppressLint("InlinedApi")
@Override
public void onAnimationEnd(Animator animation) {
mFolderName.animate().setDuration(FOLDER_NAME_ANIMATION_DURATION)
.translationX(0)
.setInterpolator(AnimationUtils.loadInterpolator(
mLauncher, android.R.interpolator.fast_out_slow_in));
mPageIndicator.playEntryAnimation();
if (updateAnimationFlag) {
mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true,
mLauncher.getModelWriter());
}
}
});
} else {
mFolderName.setTranslationX(0);
}
mPageIndicator.stopAllAnimations();
startAnimation(anim);
// Make sure the folder picks up the last drag move even if the finger doesn't move.
if (mDragController.isDragging()) {
mDragController.forceTouchMove();
}
mContent.verifyVisibleHighResIcons(mContent.getNextPage());
}
@Override
protected boolean isOfType(int type) {
return (type & TYPE_FOLDER) != 0;
}
@Override
protected void handleClose(boolean animate) {
mIsOpen = false;
if (!animate && mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
mCurrentAnimator.cancel();
}
if (isEditingName()) {
mFolderName.dispatchBackKey();
}
if (mFolderIcon != null) {
mFolderIcon.clearLeaveBehindIfExists();
}
if (animate) {
animateClosed();
} else {
closeComplete(false);
post(this::announceAccessibilityChanges);
}
// Notify the accessibility manager that this folder "window" has disappeared and no
// longer occludes the workspace items
mLauncher.getDragLayer().sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
private void animateClosed() {
if (mIsAnimatingClosed) {
return;
}
if (mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
mCurrentAnimator.cancel();
}
AnimatorSet a = new FolderAnimationManager(this, false /* isOpening */).getAnimator();
a.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
mIsAnimatingClosed = true;
}
@Override
public void onAnimationEnd(Animator animation) {
closeComplete(true);
announceAccessibilityChanges();
mIsAnimatingClosed = false;
}
});
startAnimation(a);
}
@Override
protected Pair<View, String> getAccessibilityTarget() {
return Pair.create(mContent, mIsOpen ? mContent.getAccessibilityDescription()
: getContext().getString(R.string.folder_closed));
}
@Override
protected View getAccessibilityInitialFocusView() {
View firstItem = mContent.getFirstItem();
return firstItem != null ? firstItem : super.getAccessibilityInitialFocusView();
}
private void closeComplete(boolean wasAnimated) {
// TODO: Clear all active animations.
DragLayer parent = (DragLayer) getParent();
if (parent != null) {
parent.removeView(this);
}
mDragController.removeDropTarget(this);
clearFocus();
if (mFolderIcon != null) {
mFolderIcon.setVisibility(View.VISIBLE);
mFolderIcon.setIconVisible(true);
mFolderIcon.mFolderName.setTextVisibility(true);
if (wasAnimated) {
mFolderIcon.animateBgShadowAndStroke();
mFolderIcon.onFolderClose(mContent.getCurrentPage());
if (mFolderIcon.hasDot()) {
mFolderIcon.animateDotScale(0f, 1f);
}
mFolderIcon.requestFocus();
}
}
if (mRearrangeOnClose) {
rearrangeChildren();
mRearrangeOnClose = false;
}
if (getItemCount() <= 1) {
if (!mDragInProgress && !mSuppressFolderDeletion) {
replaceFolderWithFinalItem();
} else if (mDragInProgress) {
mDeleteFolderOnDropCompleted = true;
}
} else if (!mDragInProgress) {
mContent.unbindItems();
}
mSuppressFolderDeletion = false;
clearDragInfo();
mState = STATE_SMALL;
mContent.setCurrentPage(0);
}
@Override
public boolean acceptDrop(DragObject d) {
final ItemInfo item = d.dragInfo;
final int itemType = item.itemType;
return ((itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT ||
itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT));
}
public void onDragEnter(DragObject d) {
mPrevTargetRank = -1;
mOnExitAlarm.cancelAlarm();
// Get the area offset such that the folder only closes if half the drag icon width
// is outside the folder area
mScrollAreaOffset = d.dragView.getDragRegionWidth() / 2 - d.xOffset;
}
OnAlarmListener mReorderAlarmListener = new OnAlarmListener() {
public void onAlarm(Alarm alarm) {
mContent.realTimeReorder(mEmptyCellRank, mTargetRank);
mEmptyCellRank = mTargetRank;
}
};
public boolean isLayoutRtl() {
return (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
}
private int getTargetRank(DragObject d, float[] recycle) {
recycle = d.getVisualCenter(recycle);
return mContent.findNearestArea(
(int) recycle[0] - getPaddingLeft(), (int) recycle[1] - getPaddingTop());
}
@Override
public void onDragOver(DragObject d) {
if (mScrollPauseAlarm.alarmPending()) {
return;
}
final float[] r = new float[2];
mTargetRank = getTargetRank(d, r);
if (mTargetRank != mPrevTargetRank) {
mReorderAlarm.cancelAlarm();
mReorderAlarm.setOnAlarmListener(mReorderAlarmListener);
mReorderAlarm.setAlarm(REORDER_DELAY);
mPrevTargetRank = mTargetRank;
if (d.stateAnnouncer != null) {
d.stateAnnouncer.announce(getContext().getString(R.string.move_to_position,
mTargetRank + 1));
}
}
float x = r[0];
int currentPage = mContent.getNextPage();
float cellOverlap = mContent.getCurrentCellLayout().getCellWidth()
* ICON_OVERSCROLL_WIDTH_FACTOR;
boolean isOutsideLeftEdge = x < cellOverlap;
boolean isOutsideRightEdge = x > (getWidth() - cellOverlap);
if (currentPage > 0 && (mContent.mIsRtl ? isOutsideRightEdge : isOutsideLeftEdge)) {
showScrollHint(SCROLL_LEFT, d);
} else if (currentPage < (mContent.getPageCount() - 1)
&& (mContent.mIsRtl ? isOutsideLeftEdge : isOutsideRightEdge)) {
showScrollHint(SCROLL_RIGHT, d);
} else {
mOnScrollHintAlarm.cancelAlarm();
if (mScrollHintDir != SCROLL_NONE) {
mContent.clearScrollHint();
mScrollHintDir = SCROLL_NONE;
}
}
}
private void showScrollHint(int direction, DragObject d) {
// Show scroll hint on the right
if (mScrollHintDir != direction) {
mContent.showScrollHint(direction);
mScrollHintDir = direction;
}
// Set alarm for when the hint is complete
if (!mOnScrollHintAlarm.alarmPending() || mCurrentScrollDir != direction) {
mCurrentScrollDir = direction;
mOnScrollHintAlarm.cancelAlarm();
mOnScrollHintAlarm.setOnAlarmListener(new OnScrollHintListener(d));
mOnScrollHintAlarm.setAlarm(SCROLL_HINT_DURATION);
mReorderAlarm.cancelAlarm();
mTargetRank = mEmptyCellRank;
}
}
OnAlarmListener mOnExitAlarmListener = new OnAlarmListener() {
public void onAlarm(Alarm alarm) {
completeDragExit();
}
};
public void completeDragExit() {
if (mIsOpen) {
close(true);
mRearrangeOnClose = true;
} else if (mState == STATE_ANIMATING) {
mRearrangeOnClose = true;
} else {
rearrangeChildren();
clearDragInfo();
}
}
private void clearDragInfo() {
mCurrentDragView = null;
mIsExternalDrag = false;
}
public void onDragExit(DragObject d) {
// We only close the folder if this is a true drag exit, ie. not because
// a drop has occurred above the folder.
if (!d.dragComplete) {
mOnExitAlarm.setOnAlarmListener(mOnExitAlarmListener);
mOnExitAlarm.setAlarm(ON_EXIT_CLOSE_DELAY);
}
mReorderAlarm.cancelAlarm();
mOnScrollHintAlarm.cancelAlarm();
mScrollPauseAlarm.cancelAlarm();
if (mScrollHintDir != SCROLL_NONE) {
mContent.clearScrollHint();
mScrollHintDir = SCROLL_NONE;
}
}
/**
* When performing an accessibility drop, onDrop is sent immediately after onDragEnter. So we
* need to complete all transient states based on timers.
*/
@Override
public void prepareAccessibilityDrop() {
if (mReorderAlarm.alarmPending()) {
mReorderAlarm.cancelAlarm();
mReorderAlarmListener.onAlarm(mReorderAlarm);
}
}
@Override
public void onDropCompleted(final View target, final DragObject d,
final boolean success) {
if (success) {
if (mDeleteFolderOnDropCompleted && !mItemAddedBackToSelfViaIcon && target != this) {
replaceFolderWithFinalItem();
}
} else {
// The drag failed, we need to return the item to the folder
WorkspaceItemInfo info = (WorkspaceItemInfo) d.dragInfo;
View icon = (mCurrentDragView != null && mCurrentDragView.getTag() == info)
? mCurrentDragView : mContent.createNewView(info);
ArrayList<View> views = getIconsInReadingOrder();
info.rank = Utilities.boundToRange(info.rank, 0, views.size());
views.add(info.rank, icon);
mContent.arrangeChildren(views);
mItemsInvalidated = true;
try (SuppressInfoChanges s = new SuppressInfoChanges()) {
mFolderIcon.onDrop(d, true /* itemReturnedOnFailedDrop */);
}
}
if (target != this) {
if (mOnExitAlarm.alarmPending()) {
mOnExitAlarm.cancelAlarm();
if (!success) {
mSuppressFolderDeletion = true;
}
mScrollPauseAlarm.cancelAlarm();
completeDragExit();
}
}
mDeleteFolderOnDropCompleted = false;
mDragInProgress = false;
mItemAddedBackToSelfViaIcon = false;
mCurrentDragView = null;
// Reordering may have occured, and we need to save the new item locations. We do this once
// at the end to prevent unnecessary database operations.
updateItemLocationsInDatabaseBatch(false);
// Use the item count to check for multi-page as the folder UI may not have
// been refreshed yet.
if (getItemCount() <= mContent.itemsPerPage()) {
// Show the animation, next time something is added to the folder.
mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, false,
mLauncher.getModelWriter());
}
}
private void updateItemLocationsInDatabaseBatch(boolean isBind) {
FolderGridOrganizer verifier = new FolderGridOrganizer(
mLauncher.getDeviceProfile().inv).setFolderInfo(mInfo);
ArrayList<ItemInfo> items = new ArrayList<>();
int total = mInfo.contents.size();
for (int i = 0; i < total; i++) {
WorkspaceItemInfo itemInfo = mInfo.contents.get(i);
if (verifier.updateRankAndPos(itemInfo, i)) {
items.add(itemInfo);
}
}
if (!items.isEmpty()) {
mLauncher.getModelWriter().moveItemsInDatabase(items, mInfo.id, 0);
}
if (FeatureFlags.FOLDER_NAME_SUGGEST.get() && !isBind
&& total > 1 /* no need to update if there's one icon */) {
Executors.MODEL_EXECUTOR.post(() -> {
FolderNameInfos nameInfos = new FolderNameInfos();
FolderNameProvider fnp = FolderNameProvider.newInstance(getContext());
fnp.getSuggestedFolderName(
getContext(), mInfo.contents, nameInfos);
mInfo.suggestedFolderNames = nameInfos;
});
}
}
public void notifyDrop() {
if (mDragInProgress) {
mItemAddedBackToSelfViaIcon = true;
}
}
public boolean isDropEnabled() {
return mState != STATE_ANIMATING;
}
private void centerAboutIcon() {
DeviceProfile grid = mLauncher.getDeviceProfile();
DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams();
DragLayer parent = mLauncher.getDragLayer();
int width = getFolderWidth();
int height = getFolderHeight();
parent.getDescendantRectRelativeToSelf(mFolderIcon, sTempRect);
int centerX = sTempRect.centerX();
int centerY = sTempRect.centerY();
int centeredLeft = centerX - width / 2;
int centeredTop = centerY - height / 2;
// We need to bound the folder to the currently visible workspace area
if (mLauncher.getStateManager().getState().overviewUi) {
parent.getDescendantRectRelativeToSelf(mLauncher.getOverviewPanel(), sTempRect);
} else {
mLauncher.getWorkspace().getPageAreaRelativeToDragLayer(sTempRect);
}
int left = Math.min(Math.max(sTempRect.left, centeredLeft),
sTempRect.right- width);
int top = Math.min(Math.max(sTempRect.top, centeredTop),
sTempRect.bottom - height);
int distFromEdgeOfScreen = mLauncher.getWorkspace().getPaddingLeft() + getPaddingLeft();
if (grid.isPhone && (grid.availableWidthPx - width) < 4 * distFromEdgeOfScreen) {
// Center the folder if it is very close to being centered anyway, by virtue of
// filling the majority of the viewport. ie. remove it from the uncanny valley
// of centeredness.
left = (grid.availableWidthPx - width) / 2;
} else if (width >= sTempRect.width()) {
// If the folder doesn't fit within the bounds, center it about the desired bounds
left = sTempRect.left + (sTempRect.width() - width) / 2;
}
if (height >= sTempRect.height()) {
// Folder height is greater than page height, center on page
top = sTempRect.top + (sTempRect.height() - height) / 2;
} else {
// Folder height is less than page height, so bound it to the absolute open folder
// bounds if necessary
Rect folderBounds = grid.getAbsoluteOpenFolderBounds();
left = Math.max(folderBounds.left, Math.min(left, folderBounds.right - width));
top = Math.max(folderBounds.top, Math.min(top, folderBounds.bottom - height));
}
int folderPivotX = width / 2 + (centeredLeft - left);
int folderPivotY = height / 2 + (centeredTop - top);
setPivotX(folderPivotX);
setPivotY(folderPivotY);
lp.width = width;
lp.height = height;
lp.x = left;
lp.y = top;
}
protected int getContentAreaHeight() {
DeviceProfile grid = mLauncher.getDeviceProfile();
int maxContentAreaHeight = grid.availableHeightPx - grid.getTotalWorkspacePadding().y
- mFooterHeight;
int height = Math.min(maxContentAreaHeight,
mContent.getDesiredHeight());
return Math.max(height, MIN_CONTENT_DIMEN);
}
private int getContentAreaWidth() {
return Math.max(mContent.getDesiredWidth(), MIN_CONTENT_DIMEN);
}
private int getFolderWidth() {
return getPaddingLeft() + getPaddingRight() + mContent.getDesiredWidth();
}
private int getFolderHeight() {
return getFolderHeight(getContentAreaHeight());
}
private int getFolderHeight(int contentAreaHeight) {
return getPaddingTop() + getPaddingBottom() + contentAreaHeight + mFooterHeight;
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int contentWidth = getContentAreaWidth();
int contentHeight = getContentAreaHeight();
int contentAreaWidthSpec = MeasureSpec.makeMeasureSpec(contentWidth, MeasureSpec.EXACTLY);
int contentAreaHeightSpec = MeasureSpec.makeMeasureSpec(contentHeight, MeasureSpec.EXACTLY);
mContent.setFixedSize(contentWidth, contentHeight);
mContent.measure(contentAreaWidthSpec, contentAreaHeightSpec);
if (mContent.getChildCount() > 0) {
int cellIconGap = (mContent.getPageAt(0).getCellWidth()
- mLauncher.getDeviceProfile().iconSizePx) / 2;
mFooter.setPadding(mContent.getPaddingLeft() + cellIconGap,
mFooter.getPaddingTop(),
mContent.getPaddingRight() + cellIconGap,
mFooter.getPaddingBottom());
}
mFooter.measure(contentAreaWidthSpec,
MeasureSpec.makeMeasureSpec(mFooterHeight, MeasureSpec.EXACTLY));
int folderWidth = getPaddingLeft() + getPaddingRight() + contentWidth;
int folderHeight = getFolderHeight(contentHeight);
setMeasuredDimension(folderWidth, folderHeight);
}
/**
* Rearranges the children based on their rank.
*/
public void rearrangeChildren() {
if (!mContent.areViewsBound()) {
return;
}
mContent.arrangeChildren(getIconsInReadingOrder());
mItemsInvalidated = true;
}
public int getItemCount() {
return mInfo.contents.size();
}
@Thunk void replaceFolderWithFinalItem() {
// Add the last remaining child to the workspace in place of the folder
Runnable onCompleteRunnable = new Runnable() {
@Override
public void run() {
int itemCount = getItemCount();
if (itemCount <= 1) {
View newIcon = null;
WorkspaceItemInfo finalItem = null;
if (itemCount == 1) {
// Move the item from the folder to the workspace, in the position of the
// folder
CellLayout cellLayout = mLauncher.getCellLayout(mInfo.container,
mInfo.screenId);
finalItem = mInfo.contents.remove(0);
newIcon = mLauncher.createShortcut(cellLayout, finalItem);
mLauncher.getModelWriter().addOrMoveItemInDatabase(finalItem,
mInfo.container, mInfo.screenId, mInfo.cellX, mInfo.cellY);
}
// Remove the folder
mLauncher.removeItem(mFolderIcon, mInfo, true /* deleteFromDb */);
if (mFolderIcon instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) mFolderIcon);
}
if (newIcon != null) {
// We add the child after removing the folder to prevent both from existing
// at the same time in the CellLayout. We need to add the new item with
// addInScreenFromBind() to ensure that hotseat items are placed correctly.
mLauncher.getWorkspace().addInScreenFromBind(newIcon, mInfo);
// Focus the newly created child
newIcon.requestFocus();
}
if (finalItem != null) {
mLauncher.folderConvertedToItem(mFolderIcon.getFolder(), finalItem);
}
}
}
};
View finalChild = mContent.getLastItem();
if (finalChild != null) {
mFolderIcon.performDestroyAnimation(onCompleteRunnable);
} else {
onCompleteRunnable.run();
}
mDestroyed = true;
}
public boolean isDestroyed() {
return mDestroyed;
}
// This method keeps track of the first and last item in the folder for the purposes
// of keyboard focus
public void updateTextViewFocus() {
final View firstChild = mContent.getFirstItem();
final View lastChild = mContent.getLastItem();
if (firstChild != null && lastChild != null) {
mFolderName.setNextFocusDownId(lastChild.getId());
mFolderName.setNextFocusRightId(lastChild.getId());
mFolderName.setNextFocusLeftId(lastChild.getId());
mFolderName.setNextFocusUpId(lastChild.getId());
// Hitting TAB from the folder name wraps around to the first item on the current
// folder page, and hitting SHIFT+TAB from that item wraps back to the folder name.
mFolderName.setNextFocusForwardId(firstChild.getId());
// When clicking off the folder when editing the name, this Folder gains focus. When
// pressing an arrow key from that state, give the focus to the first item.
this.setNextFocusDownId(firstChild.getId());
this.setNextFocusRightId(firstChild.getId());
this.setNextFocusLeftId(firstChild.getId());
this.setNextFocusUpId(firstChild.getId());
// When pressing shift+tab in the above state, give the focus to the last item.
setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
boolean isShiftPlusTab = keyCode == KeyEvent.KEYCODE_TAB &&
event.hasModifiers(KeyEvent.META_SHIFT_ON);
if (isShiftPlusTab && Folder.this.isFocused()) {
return lastChild.requestFocus();
}
return false;
}
});
} else {
setOnKeyListener(null);
}
}
@Override
public void onDrop(DragObject d, DragOptions options) {
// If the icon was dropped while the page was being scrolled, we need to compute
// the target location again such that the icon is placed of the final page.
if (!mContent.rankOnCurrentPage(mEmptyCellRank)) {
// Reorder again.
mTargetRank = getTargetRank(d, null);
// Rearrange items immediately.
mReorderAlarmListener.onAlarm(mReorderAlarm);
mOnScrollHintAlarm.cancelAlarm();
mScrollPauseAlarm.cancelAlarm();
}
mContent.completePendingPageChanges();
PendingAddShortcutInfo pasi = d.dragInfo instanceof PendingAddShortcutInfo
? (PendingAddShortcutInfo) d.dragInfo : null;
WorkspaceItemInfo pasiSi = pasi != null ? pasi.activityInfo.createWorkspaceItemInfo() : null;
if (pasi != null && pasiSi == null) {
// There is no WorkspaceItemInfo, so we have to go through a configuration activity.
pasi.container = mInfo.id;
pasi.rank = mEmptyCellRank;
mLauncher.addPendingItem(pasi, pasi.container, pasi.screenId, null, pasi.spanX,
pasi.spanY);
d.deferDragViewCleanupPostAnimation = false;
mRearrangeOnClose = true;
} else {
final WorkspaceItemInfo si;
if (pasiSi != null) {
si = pasiSi;
} else if (d.dragInfo instanceof AppInfo) {
// Came from all apps -- make a copy.
si = ((AppInfo) d.dragInfo).makeWorkspaceItem();
} else {
// WorkspaceItemInfo
si = (WorkspaceItemInfo) d.dragInfo;
}
View currentDragView;
if (mIsExternalDrag) {
currentDragView = mContent.createAndAddViewForRank(si, mEmptyCellRank);
// Actually move the item in the database if it was an external drag. Call this
// before creating the view, so that WorkspaceItemInfo is updated appropriately.
mLauncher.getModelWriter().addOrMoveItemInDatabase(
si, mInfo.id, 0, si.cellX, si.cellY);
mIsExternalDrag = false;
} else {
currentDragView = mCurrentDragView;
mContent.addViewForRank(currentDragView, si, mEmptyCellRank);
}
if (d.dragView.hasDrawn()) {
// Temporarily reset the scale such that the animation target gets calculated
// correctly.
float scaleX = getScaleX();
float scaleY = getScaleY();
setScaleX(1.0f);
setScaleY(1.0f);
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, currentDragView, null);
setScaleX(scaleX);
setScaleY(scaleY);
} else {
d.deferDragViewCleanupPostAnimation = false;
currentDragView.setVisibility(VISIBLE);
}
mItemsInvalidated = true;
rearrangeChildren();
// Temporarily suppress the listener, as we did all the work already here.
try (SuppressInfoChanges s = new SuppressInfoChanges()) {
mInfo.add(si, mEmptyCellRank, false);
}
// We only need to update the locations if it doesn't get handled in
// #onDropCompleted.
if (d.dragSource != this) {
updateItemLocationsInDatabaseBatch(false);
}
}
// Clear the drag info, as it is no longer being dragged.
mDragInProgress = false;
if (mContent.getPageCount() > 1) {
// The animation has already been shown while opening the folder.
mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true, mLauncher.getModelWriter());
}
mLauncher.getStateManager().goToState(NORMAL, SPRING_LOADED_EXIT_DELAY);
if (d.stateAnnouncer != null) {
d.stateAnnouncer.completeAction(R.string.item_moved);
}
mStatsLogManager.logger().withItemInfo(d.dragInfo).withInstanceId(d.logInstanceId)
.log(LAUNCHER_ITEM_DROP_COMPLETED);
}
// This is used so the item doesn't immediately appear in the folder when added. In one case
// we need to create the illusion that the item isn't added back to the folder yet, to
// to correspond to the animation of the icon back into the folder. This is
public void hideItem(WorkspaceItemInfo info) {
View v = getViewForInfo(info);
if (v != null) {
v.setVisibility(INVISIBLE);
}
}
public void showItem(WorkspaceItemInfo info) {
View v = getViewForInfo(info);
if (v != null) {
v.setVisibility(VISIBLE);
}
}
@Override
public void onAdd(WorkspaceItemInfo item, int rank) {
FolderGridOrganizer verifier = new FolderGridOrganizer(
mLauncher.getDeviceProfile().inv).setFolderInfo(mInfo);
verifier.updateRankAndPos(item, rank);
mLauncher.getModelWriter().addOrMoveItemInDatabase(item, mInfo.id, 0, item.cellX,
item.cellY);
updateItemLocationsInDatabaseBatch(false);
if (mContent.areViewsBound()) {
mContent.createAndAddViewForRank(item, rank);
}
mItemsInvalidated = true;
}
public void onRemove(WorkspaceItemInfo item) {
mItemsInvalidated = true;
View v = getViewForInfo(item);
mContent.removeItem(v);
if (mState == STATE_ANIMATING) {
mRearrangeOnClose = true;
} else {
rearrangeChildren();
}
if (getItemCount() <= 1) {
if (mIsOpen) {
close(true);
} else {
replaceFolderWithFinalItem();
}
}
}
private View getViewForInfo(final WorkspaceItemInfo item) {
return mContent.iterateOverItems((info, view) -> info == item);
}
@Override
public void onItemsChanged(boolean animate) {
updateTextViewFocus();
}
/**
* Utility methods to iterate over items of the view
*/
public void iterateOverItems(ItemOperator op) {
mContent.iterateOverItems(op);
}
/**
* Returns the sorted list of all the icons in the folder
*/
public ArrayList<View> getIconsInReadingOrder() {
if (mItemsInvalidated) {
mItemsInReadingOrder.clear();
mContent.iterateOverItems((i, v) -> !mItemsInReadingOrder.add(v));
mItemsInvalidated = false;
}
return mItemsInReadingOrder;
}
public List<BubbleTextView> getItemsOnPage(int page) {
ArrayList<View> allItems = getIconsInReadingOrder();
int lastPage = mContent.getPageCount() - 1;
int totalItemsInFolder = allItems.size();
int itemsPerPage = mContent.itemsPerPage();
int numItemsOnCurrentPage = page == lastPage
? totalItemsInFolder - (itemsPerPage * page)
: itemsPerPage;
int startIndex = page * itemsPerPage;
int endIndex = Math.min(startIndex + numItemsOnCurrentPage, allItems.size());
List<BubbleTextView> itemsOnCurrentPage = new ArrayList<>(numItemsOnCurrentPage);
for (int i = startIndex; i < endIndex; ++i) {
itemsOnCurrentPage.add((BubbleTextView) allItems.get(i));
}
return itemsOnCurrentPage;
}
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (v == mFolderName) {
if (hasFocus) {
mFromLabelState = mInfo.getFromLabelState();
mFromTitle = mInfo.title;
startEditingFolderName();
} else {
StatsLogger statsLogger = mStatsLogManager.logger()
.withItemInfo(mInfo)
.withFromState(mFromLabelState);
// 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 (mFromLabelState.equals(FromState.FROM_SUGGESTED)) {
labelInfoBuilder.add(mFromTitle);
}
ToState toLabelState;
if (mFromTitle != null && mFromTitle.equals(mInfo.title)) {
toLabelState = ToState.UNCHANGED;
} else {
toLabelState = mInfo.getToLabelState();
if (toLabelState.toString().startsWith("TO_SUGGESTION")) {
labelInfoBuilder.add(mInfo.title);
}
}
statsLogger.withToState(toLabelState);
if (labelInfoBuilder.length() > 0) {
statsLogger.withEditText(labelInfoBuilder.toString());
}
statsLogger.log(LAUNCHER_FOLDER_LABEL_UPDATED);
logFolderLabelState(mFromLabelState, toLabelState);
mFolderName.dispatchBackKey();
}
}
}
@Override
public void getHitRectRelativeToDragLayer(Rect outRect) {
getHitRect(outRect);
outRect.left -= mScrollAreaOffset;
outRect.right += mScrollAreaOffset;
}
@Override
public void fillInLogContainerData(ItemInfo childInfo, LauncherLogProto.Target child,
ArrayList<LauncherLogProto.Target> targets) {
child.gridX = childInfo.cellX;
child.gridY = childInfo.cellY;
child.pageIndex = mContent.getCurrentPage();
LauncherLogProto.Target target = newContainerTarget(LauncherLogProto.ContainerType.FOLDER);
target.pageIndex = mInfo.screenId;
target.gridX = mInfo.cellX;
target.gridY = mInfo.cellY;
targets.add(target);
// continue to parent
if (mInfo.container == CONTAINER_HOTSEAT) {
mLauncher.getHotseat().fillInLogContainerData(mInfo, target, targets);
} else {
mLauncher.getWorkspace().fillInLogContainerData(mInfo, target, targets);
}
}
private class OnScrollHintListener implements OnAlarmListener {
private final DragObject mDragObject;
OnScrollHintListener(DragObject object) {
mDragObject = object;
}
/**
* Scroll hint has been shown long enough. Now scroll to appropriate page.
*/
@Override
public void onAlarm(Alarm alarm) {
if (mCurrentScrollDir == SCROLL_LEFT) {
mContent.scrollLeft();
mScrollHintDir = SCROLL_NONE;
} else if (mCurrentScrollDir == SCROLL_RIGHT) {
mContent.scrollRight();
mScrollHintDir = SCROLL_NONE;
} else {
// This should not happen
return;
}
mCurrentScrollDir = SCROLL_NONE;
// Pause drag event until the scrolling is finished
mScrollPauseAlarm.setOnAlarmListener(new OnScrollFinishedListener(mDragObject));
mScrollPauseAlarm.setAlarm(RESCROLL_DELAY);
}
}
private class OnScrollFinishedListener implements OnAlarmListener {
private final DragObject mDragObject;
OnScrollFinishedListener(DragObject object) {
mDragObject = object;
}
/**
* Page scroll is complete.
*/
@Override
public void onAlarm(Alarm alarm) {
// Reorder immediately on page change.
onDragOver(mDragObject);
}
}
// Compares item position based on rank and position giving priority to the rank.
public static final Comparator<ItemInfo> ITEM_POS_COMPARATOR = new Comparator<ItemInfo>() {
@Override
public int compare(ItemInfo lhs, ItemInfo rhs) {
if (lhs.rank != rhs.rank) {
return lhs.rank - rhs.rank;
} else if (lhs.cellY != rhs.cellY) {
return lhs.cellY - rhs.cellY;
} else {
return lhs.cellX - rhs.cellX;
}
}
};
/**
* Temporary resource held while we don't want to handle info changes
*/
private class SuppressInfoChanges implements AutoCloseable {
SuppressInfoChanges() {
mInfo.removeListener(Folder.this);
}
@Override
public void close() {
mInfo.addListener(Folder.this);
updateTextViewFocus();
}
}
/**
* Returns a folder which is already open or null
*/
public static Folder getOpen(Launcher launcher) {
return getOpenView(launcher, TYPE_FOLDER);
}
@Override
public void logActionCommand(int command) {
mLauncher.getUserEventDispatcher().logActionCommand(
command, getFolderIcon(), getLogContainerType());
}
@Override
public int getLogContainerType() {
return LauncherLogProto.ContainerType.FOLDER;
}
/**
* Navigation bar back key or hardware input back key has been issued.
*/
@Override
public boolean onBackPressed() {
if (isEditingName()) {
mFolderName.dispatchBackKey();
} else {
super.onBackPressed();
}
return true;
}
@Override
public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
DragLayer dl = mLauncher.getDragLayer();
if (isEditingName()) {
if (!dl.isEventOverView(mFolderName, ev)) {
mFolderName.dispatchBackKey();
return true;
}
return false;
} else if (!dl.isEventOverView(this, ev)) {
if (mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) {
// Do not close the container if in drag and drop.
if (!dl.isEventOverView(mLauncher.getDropTargetBar(), ev)) {
return true;
}
} else {
mLauncher.getUserEventDispatcher().logActionTapOutside(
newContainerTarget(LauncherLogProto.ContainerType.FOLDER));
close(true);
return true;
}
}
}
return false;
}
/**
* Alternative to using {@link #getClipToOutline()} as it only works with derivatives of
* rounded rect.
*/
@Override
public void setClipPath(Path clipPath) {
mClipPath = clipPath;
invalidate();
}
@Override
public void draw(Canvas canvas) {
if (mClipPath != null) {
int count = canvas.save();
canvas.clipPath(mClipPath);
super.draw(canvas);
canvas.restoreToCount(count);
} else {
super.draw(canvas);
}
}
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(FromState fromState, ToState toState) {
mLauncher.getUserEventDispatcher()
.logLauncherEvent(mInfo.getFolderLabelStateLauncherEvent(fromState, toState));
}
}