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/*
* 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.LauncherState.EDIT_MODE;
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.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_LABEL_UPDATED;
import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_ITEM_DROP_COMPLETED;
import static com.android.launcher3.testing.shared.TestProtocol.FOLDER_OPENED_MESSAGE;
import static com.android.launcher3.util.window.RefreshRateTracker.getSingleFrameMs;
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.Insets;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.os.Looper;
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.util.TypedValue;
import android.view.FocusFinder;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.view.WindowInsets;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.EditorInfo;
import android.widget.TextView;
import androidx.annotation.IntDef;
import androidx.annotation.Nullable;
import androidx.core.content.res.ResourcesCompat;
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.R;
import com.android.launcher3.ShortcutAndWidgetContainer;
import com.android.launcher3.Utilities;
import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
import com.android.launcher3.accessibility.FolderAccessibilityHelper;
import com.android.launcher3.anim.KeyboardInsetAnimationCallback;
import com.android.launcher3.compat.AccessibilityManagerCompat;
import com.android.launcher3.config.FeatureFlags;
import com.android.launcher3.dragndrop.DragController;
import com.android.launcher3.dragndrop.DragController.DragListener;
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.FolderInfo;
import com.android.launcher3.model.data.FolderInfo.FolderListener;
import com.android.launcher3.model.data.ItemInfo;
import com.android.launcher3.model.data.WorkspaceItemFactory;
import com.android.launcher3.model.data.WorkspaceItemInfo;
import com.android.launcher3.pageindicators.PageIndicatorDots;
import com.android.launcher3.util.Executors;
import com.android.launcher3.util.LauncherBindableItemsContainer.ItemOperator;
import com.android.launcher3.util.Thunk;
import com.android.launcher3.views.ActivityContext;
import com.android.launcher3.views.BaseDragLayer;
import com.android.launcher3.views.ClipPathView;
import com.android.launcher3.widget.PendingAddShortcutInfo;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
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;
public static final int STATE_CLOSED = 0;
public static final int STATE_ANIMATING = 1;
public static final int STATE_OPEN = 2;
@Retention(RetentionPolicy.SOURCE)
@IntDef({STATE_CLOSED, STATE_ANIMATING, STATE_OPEN})
public @interface FolderState {}
/**
* Time for which the scroll hint is shown before automatically changing page.
*/
public static final int SCROLL_HINT_DURATION = 500;
private static final int RESCROLL_EXTRA_DELAY = 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 FOLDER_COLOR_ANIMATION_DURATION = 200;
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(Looper.getMainLooper());
private final Alarm mOnExitAlarm = new Alarm(Looper.getMainLooper());
private final Alarm mOnScrollHintAlarm = new Alarm(Looper.getMainLooper());
final Alarm mScrollPauseAlarm = new Alarm(Looper.getMainLooper());
final ArrayList<View> mItemsInReadingOrder = new ArrayList<View>();
private AnimatorSet mCurrentAnimator;
private boolean mIsAnimatingClosed = false;
// Folder can be displayed in Launcher's activity or a separate window (e.g. Taskbar).
// Anything specific to Launcher should use mLauncherDelegate, otherwise should
// use mActivityContext.
protected final LauncherDelegate mLauncherDelegate;
protected final ActivityContext mActivityContext;
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_CLOSED, to = "STATE_CLOSED"),
@ViewDebug.IntToString(from = STATE_ANIMATING, to = "STATE_ANIMATING"),
@ViewDebug.IntToString(from = STATE_OPEN, to = "STATE_OPEN"),
})
private int mState = STATE_CLOSED;
private final List<OnFolderStateChangedListener> mOnFolderStateChangedListeners =
new ArrayList<>();
private OnFolderStateChangedListener mPriorityOnFolderStateChangedListener;
@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;
@Nullable
private KeyboardInsetAnimationCallback mKeyboardInsetAnimationCallback;
private GradientDrawable mBackground;
/**
* 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);
mActivityContext = ActivityContext.lookupContext(context);
mLauncherDelegate = LauncherDelegate.from(mActivityContext);
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
public Drawable getBackground() {
return mBackground;
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
final DeviceProfile dp = mActivityContext.getDeviceProfile();
final int paddingLeftRight = dp.folderContentPaddingLeftRight;
mBackground = (GradientDrawable) ResourcesCompat.getDrawable(getResources(),
R.drawable.round_rect_folder, getContext().getTheme());
mContent = findViewById(R.id.folder_content);
mContent.setPadding(paddingLeftRight, dp.folderContentPaddingTop, paddingLeftRight, 0);
mContent.setFolder(this);
mPageIndicator = findViewById(R.id.folder_page_indicator);
mFolderName = findViewById(R.id.folder_name);
mFolderName.setTextSize(TypedValue.COMPLEX_UNIT_PX, dp.folderLabelTextSizePx);
mFolderName.setOnBackKeyListener(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);
mFooterHeight = dp.folderFooterHeightPx;
mKeyboardInsetAnimationCallback = new KeyboardInsetAnimationCallback(this);
setWindowInsetsAnimationCallback(mKeyboardInsetAnimationCallback);
}
public boolean onLongClick(View v) {
// Return if global dragging is not enabled
if (!mLauncherDelegate.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,
@Nullable DragObject dragObject) {
super.enableAccessibleDrag(enable, dragObject);
mFooter.setImportantForAccessibility(enable
? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
: IMPORTANT_FOR_ACCESSIBILITY_AUTO);
}
});
}
mLauncherDelegate.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(() -> {
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, mLauncherDelegate.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;
}
@Override
public WindowInsets onApplyWindowInsets(WindowInsets windowInsets) {
this.setTranslationY(0);
if (windowInsets.isVisible(WindowInsets.Type.ime())) {
Insets keyboardInsets = windowInsets.getInsets(WindowInsets.Type.ime());
int folderHeightFromBottom = getHeightFromBottom();
if (keyboardInsets.bottom > folderHeightFromBottom) {
// Translate this folder above the keyboard, then add the folder name's padding
this.setTranslationY(folderHeightFromBottom - keyboardInsets.bottom
- mFolderName.getPaddingBottom());
}
}
return windowInsets;
}
public FolderIcon getFolderIcon() {
return mFolderIcon;
}
public void setDragController(DragController dragController) {
mDragController = dragController;
}
public void setFolderIcon(FolderIcon icon) {
mFolderIcon = icon;
mLauncherDelegate.init(this, 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();
mFolderName.addOnFocusChangeListener(this);
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
mFolderName.removeOnFocusChangeListener(this);
}
@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);
BaseDragLayer.LayoutParams lp = (BaseDragLayer.LayoutParams) getLayoutParams();
if (lp == null) {
lp = new BaseDragLayer.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 activityContext The main ActivityContext in which to inflate this Folder. It must also
* be an instance or ContextWrapper around the Launcher activity context.
* @return A new UserFolder.
*/
@SuppressLint("InflateParams")
static <T extends Context & ActivityContext> Folder fromXml(T activityContext) {
return (Folder) LayoutInflater.from(activityContext).cloneInContext(activityContext)
.inflate(R.layout.user_folder_icon_normalized, null);
}
private void addAnimationStartListeners(AnimatorSet a) {
mLauncherDelegate.forEachVisibleWorkspacePage(
visiblePage -> addAnimatorListenerForPage(a, (CellLayout) visiblePage));
a.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
setState(STATE_ANIMATING);
mCurrentAnimator = a;
}
@Override
public void onAnimationEnd(Animator animation) {
mCurrentAnimator = null;
}
});
}
private void addAnimatorListenerForPage(AnimatorSet a, CellLayout currentCellLayout) {
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);
}
}
@Override
public void onAnimationEnd(Animator animation) {
if (useHardware) {
currentCellLayout.enableHardwareLayer(wasHardwareAccelerated);
}
}
});
}
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) {
if (items == null || items.size() <= 1) {
Log.d(TAG, "Couldn't animate folder open because items is: " + items);
return;
}
Folder openFolder = getOpen(mActivityContext);
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;
BaseDragLayer dragLayer = mActivityContext.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.setCurrentPage(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;
cancelRunningAnimations();
FolderAnimationManager fam = new FolderAnimationManager(this, true /* isOpening */);
AnimatorSet anim = fam.getAnimator();
anim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
mFolderIcon.setIconVisible(false);
mFolderIcon.drawLeaveBehindIfExists();
}
@Override
public void onAnimationEnd(Animator animation) {
setState(STATE_OPEN);
announceAccessibilityChanges();
AccessibilityManagerCompat.sendTestProtocolEventToTest(getContext(),
FOLDER_OPENED_MESSAGE);
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(
getContext(), android.R.interpolator.fast_out_slow_in));
mPageIndicator.playEntryAnimation();
if (updateAnimationFlag) {
mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true,
mLauncherDelegate.getModelWriter());
}
}
});
} else {
mFolderName.setTranslationX(0);
}
mPageIndicator.stopAllAnimations();
// b/282158620 because setCurrentPlayTime() below will start animator, we need to register
// {@link AnimatorListener} before it so that {@link AnimatorListener#onAnimationStart} can
// be called to register mCurrentAnimator, which will be used to cancel animator
addAnimationStartListeners(anim);
// Because t=0 has the folder match the folder icon, we can skip the
// first frame and have the same movement one frame earlier.
anim.setCurrentPlayTime(Math.min(getSingleFrameMs(getContext()), anim.getTotalDuration()));
anim.start();
// 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
mActivityContext.getDragLayer().sendAccessibilityEvent(
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
private void cancelRunningAnimations() {
if (mCurrentAnimator != null && mCurrentAnimator.isRunning()) {
mCurrentAnimator.cancel();
}
}
private void animateClosed() {
if (mIsAnimatingClosed) {
return;
}
int size = getIconsInReadingOrder().size();
if (size <= 1) {
Log.d(TAG, "Couldn't animate folder closed because there's " + size + " icons");
closeComplete(false);
post(this::announceAccessibilityChanges);
return;
}
mContent.completePendingPageChanges();
mContent.snapToPageImmediately(mContent.getDestinationPage());
cancelRunningAnimations();
AnimatorSet a = new FolderAnimationManager(this, false /* isOpening */).getAnimator();
a.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
setWindowInsetsAnimationCallback(null);
mIsAnimatingClosed = true;
}
@Override
public void onAnimationEnd(Animator animation) {
if (mKeyboardInsetAnimationCallback != null) {
setWindowInsetsAnimationCallback(mKeyboardInsetAnimationCallback);
}
closeComplete(true);
announceAccessibilityChanges();
mIsAnimatingClosed = false;
}
});
addAnimationStartListeners(a);
a.start();
}
@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.
BaseDragLayer parent = (BaseDragLayer) 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();
setState(STATE_CLOSED);
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_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 (getItemCount() <= 1) {
mDeleteFolderOnDropCompleted = true;
}
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,
mLauncherDelegate.getModelWriter());
}
}
private void updateItemLocationsInDatabaseBatch(boolean isBind) {
FolderGridOrganizer verifier = new FolderGridOrganizer(
mActivityContext.getDeviceProfile()).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()) {
mLauncherDelegate.getModelWriter().moveItemsInDatabase(items, mInfo.id, 0);
}
if (!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() {
BaseDragLayer.LayoutParams lp = (BaseDragLayer.LayoutParams) getLayoutParams();
BaseDragLayer parent = mActivityContext.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;
sTempRect.set(mActivityContext.getFolderBoundingBox());
int left = Utilities.boundToRange(centeredLeft, sTempRect.left, sTempRect.right - width);
int top = Utilities.boundToRange(centeredTop, sTempRect.top, sTempRect.bottom - height);
int[] inOutPosition = new int[]{left, top};
mActivityContext.updateOpenFolderPosition(inOutPosition, sTempRect, width, height);
left = inOutPosition[0];
top = inOutPosition[1];
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;
mBackground.setBounds(0, 0, width, height);
}
protected int getContentAreaHeight() {
DeviceProfile grid = mActivityContext.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);
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();
}
void replaceFolderWithFinalItem() {
mDestroyed = mLauncherDelegate.replaceFolderWithFinalItem(this);
}
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();
Launcher launcher = mLauncherDelegate.getLauncher();
if (launcher == null) {
return;
}
PendingAddShortcutInfo pasi = d.dragInfo instanceof PendingAddShortcutInfo
? (PendingAddShortcutInfo) d.dragInfo : null;
WorkspaceItemInfo pasiSi =
pasi != null ? pasi.getActivityInfo(launcher).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;
launcher.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 WorkspaceItemFactory) {
// Came from all apps -- make a copy.
si = ((WorkspaceItemFactory) d.dragInfo).makeWorkspaceItem(launcher);
} 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.
mLauncherDelegate.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);
launcher.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,
mLauncherDelegate.getModelWriter());
}
if (!launcher.isInState(EDIT_MODE)) {
launcher.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(
mActivityContext.getDeviceProfile()).setFolderInfo(mInfo);
verifier.updateRankAndPos(item, rank);
mLauncherDelegate.getModelWriter().addOrMoveItemInDatabase(item, mInfo.id, 0, item.cellX,
item.cellY);
updateItemLocationsInDatabaseBatch(false);
if (mContent.areViewsBound()) {
mContent.createAndAddViewForRank(item, rank);
}
mItemsInvalidated = true;
}
@Override
public void onRemove(List<WorkspaceItemInfo> items) {
mItemsInvalidated = true;
items.stream().map(this::getViewForInfo).forEach(mContent::removeItem);
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);
mFolderName.dispatchBackKey();
}
}
}
@Override
public void getHitRectRelativeToDragLayer(Rect outRect) {
getHitRect(outRect);
outRect.left -= mScrollAreaOffset;
outRect.right += mScrollAreaOffset;
}
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));
int rescrollDelay = getResources().getInteger(
R.integer.config_pageSnapAnimationDuration) + RESCROLL_EXTRA_DELAY;
mScrollPauseAlarm.setAlarm(rescrollDelay);
}
}
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(ActivityContext activityContext) {
return getOpenView(activityContext, TYPE_FOLDER);
}
/** Navigation bar back key or hardware input back key has been issued. */
@Override
public void onBackInvoked() {
if (isEditingName()) {
mFolderName.dispatchBackKey();
} else {
super.onBackInvoked();
}
}
@Override
public boolean onControllerInterceptTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
BaseDragLayer dl = (BaseDragLayer) getParent();
if (isEditingName()) {
if (!dl.isEventOverView(mFolderName, ev)) {
mFolderName.dispatchBackKey();
return true;
}
return false;
} else if (!dl.isEventOverView(this, ev)
&& mLauncherDelegate.interceptOutsideTouch(ev, dl, this)) {
return true;
}
}
return false;
}
@Override
public boolean canInterceptEventsInSystemGestureRegion() {
return true;
}
/**
* Alternative to using {@link #getClipToOutline()} as it only works with derivatives of
* rounded rect.
*/
@Override
public void setClipPath(Path clipPath) {
mClipPath = clipPath;
invalidate();
}
@Override
protected void dispatchDraw(Canvas canvas) {
if (mClipPath != null) {
int count = canvas.save();
canvas.clipPath(mClipPath);
mBackground.draw(canvas);
canvas.restoreToCount(count);
super.dispatchDraw(canvas);
} else {
mBackground.draw(canvas);
super.dispatchDraw(canvas);
}
}
public FolderPagedView getContent() {
return mContent;
}
/** Returns the height of the current folder's bottom edge from the bottom of the screen. */
private int getHeightFromBottom() {
BaseDragLayer.LayoutParams layoutParams = (BaseDragLayer.LayoutParams) getLayoutParams();
int folderBottomPx = layoutParams.y + layoutParams.height;
int windowBottomPx = mActivityContext.getDeviceProfile().heightPx;
return windowBottomPx - folderBottomPx;
}
/**
* Save this listener for the special case of when we update the state and concurrently
* add another listener to {@link #mOnFolderStateChangedListeners} to avoid a
* ConcurrentModificationException
*/
public void setPriorityOnFolderStateChangedListener(OnFolderStateChangedListener listener) {
mPriorityOnFolderStateChangedListener = listener;
}
private void setState(@FolderState int newState) {
mState = newState;
if (mPriorityOnFolderStateChangedListener != null) {
mPriorityOnFolderStateChangedListener.onFolderStateChanged(mState);
}
for (OnFolderStateChangedListener listener : mOnFolderStateChangedListeners) {
if (listener != null) {
listener.onFolderStateChanged(mState);
}
}
}
/**
* Adds the provided listener to the running list of Folder listeners
* {@link #mOnFolderStateChangedListeners}
*/
public void addOnFolderStateChangedListener(@Nullable OnFolderStateChangedListener listener) {
if (listener != null) {
mOnFolderStateChangedListeners.add(listener);
}
}
/** Removes the provided listener from the running list of Folder listeners */
public void removeOnFolderStateChangedListener(OnFolderStateChangedListener listener) {
mOnFolderStateChangedListeners.remove(listener);
}
/** Listener that can be registered via {@link #addOnFolderStateChangedListener} */
public interface OnFolderStateChangedListener {
/** See {@link Folder.FolderState} */
void onFolderStateChanged(@FolderState int newState);
}
}