/*
* 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.enrico.launcher3.folder;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Rect;
import android.support.v4.content.ContextCompat;
import android.text.InputType;
import android.text.Selection;
import android.util.AttributeSet;
import android.view.ActionMode;
import android.view.FocusFinder;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewDebug;
import android.view.accessibility.AccessibilityEvent;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.AnimationUtils;
import android.view.inputmethod.EditorInfo;
import android.widget.TextView;
import com.enrico.launcher3.AbstractFloatingView;
import com.enrico.launcher3.Alarm;
import com.enrico.launcher3.AndroidVersion;
import com.enrico.launcher3.AppInfo;
import com.enrico.launcher3.CellLayout;
import com.enrico.launcher3.DeviceProfile;
import com.enrico.launcher3.DragSource;
import com.enrico.launcher3.DropTarget;
import com.enrico.launcher3.ExtendedEditText;
import com.enrico.launcher3.FolderInfo;
import com.enrico.launcher3.FolderInfo.FolderListener;
import com.enrico.launcher3.ItemInfo;
import com.enrico.launcher3.Launcher;
import com.enrico.launcher3.LauncherAnimUtils;
import com.enrico.launcher3.LauncherSettings;
import com.enrico.launcher3.LogDecelerateInterpolator;
import com.enrico.launcher3.OnAlarmListener;
import com.enrico.launcher3.PagedView;
import com.enrico.launcher3.R;
import com.enrico.launcher3.ShortcutInfo;
import com.enrico.launcher3.UninstallDropTarget.DropTargetSource;
import com.enrico.launcher3.Utilities;
import com.enrico.launcher3.Workspace.ItemOperator;
import com.enrico.launcher3.accessibility.AccessibleDragListenerAdapter;
import com.enrico.launcher3.dragndrop.DragController;
import com.enrico.launcher3.dragndrop.DragController.DragListener;
import com.enrico.launcher3.dragndrop.DragLayer;
import com.enrico.launcher3.dragndrop.DragOptions;
import com.enrico.launcher3.pageindicators.PageIndicatorDots;
import com.enrico.launcher3.settings.PreferencesState;
import com.enrico.launcher3.theme.ThemeUtils;
import com.enrico.launcher3.util.CircleRevealOutlineProvider;
import com.enrico.launcher3.util.Thunk;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
/**
* Represents a set of icons chosen by the user or generated by the system.
*/
public class Folder extends AbstractFloatingView implements DragSource, View.OnClickListener,
View.OnLongClickListener, DropTarget, FolderListener, TextView.OnEditorActionListener,
View.OnFocusChangeListener, DragListener, DropTargetSource,
ExtendedEditText.OnBackKeyListener {
/**
* 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 String sDefaultFolderName;
private static String sHintText;
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 final int mExpandDuration;
private final int mMaterialExpandDuration;
private final int mMaterialExpandStagger;
protected final Launcher mLauncher;
protected DragController mDragController;
public FolderInfo mInfo;
@Thunk FolderIcon mFolderIcon;
@Thunk FolderPagedView mContent;
public ExtendedEditText mFolderName;
private PageIndicatorDots mPageIndicator;
private View mFooter;
private int mFooterHeight;
// Cell ranks used for drag and drop
@Thunk int mTargetRank, mPrevTargetRank, mEmptyCellRank;
@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;
@Thunk float mFolderIconPivotX;
@Thunk float mFolderIconPivotY;
private boolean mIsEditingName = false;
@ViewDebug.ExportedProperty(category = "launcher")
private boolean mDestroyed;
@Thunk Runnable mDeferredAction;
private boolean mDeferDropAfterUninstall;
private boolean mUninstallSuccessful;
// Folder scrolling
private int mScrollAreaOffset;
@Thunk int mScrollHintDir = SCROLL_NONE;
@Thunk int mCurrentScrollDir = SCROLL_NONE;
/**
* 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);
Resources res = getResources();
mExpandDuration = res.getInteger(R.integer.config_folderExpandDuration);
mMaterialExpandDuration = res.getInteger(R.integer.config_materialFolderExpandDuration);
mMaterialExpandStagger = res.getInteger(R.integer.config_materialFolderExpandStagger);
if (sDefaultFolderName == null) {
sDefaultFolderName = res.getString(R.string.folder_name);
}
if (sHintText == null) {
sHintText = res.getString(R.string.folder_hint_text);
}
mLauncher = Launcher.getLauncher(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 = (FolderPagedView) findViewById(R.id.folder_content);
mContent.setFolder(this);
mPageIndicator = (PageIndicatorDots) findViewById(R.id.folder_page_indicator);
mFolderName = (ExtendedEditText) findViewById(R.id.folder_name);
mFolderName.setOnBackKeyListener(this);
mFolderName.setOnFocusChangeListener(this);
if (!AndroidVersion.isAtLeastMarshmallow) {
// We disable action mode in older OSes where floating selection menu is not yet
// available.
mFolderName.setCustomSelectionActionModeCallback(new ActionMode.Callback() {
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return false;
}
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return false;
}
public void onDestroyActionMode(ActionMode mode) {
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
});
}
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);
//set theme attributes for footer and text color
int defaultColor = PreferencesState.isDarkThemeEnabled(mLauncher)? ContextCompat.getColor(mLauncher, R.color.material_dark) : ContextCompat.getColor(mLauncher, R.color.material_light_o);
int color = PreferencesState.areColoredFoldersEnabled(mLauncher)? ThemeUtils.getColorAccent(mLauncher): defaultColor;
mFooter.setBackgroundColor(color);
int textDefaultColor = PreferencesState.isDarkThemeEnabled(mLauncher)? ContextCompat.getColor(mLauncher, R.color.material_light) : ContextCompat.getColor(mLauncher, R.color.material_dark);
int textColor = PreferencesState.areColoredFoldersEnabled(mLauncher)? defaultColor : textDefaultColor;
mFolderName.setTextColor(textColor);
// 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 void onClick(View v) {
Object tag = v.getTag();
if (tag instanceof ShortcutInfo) {
mLauncher.onClick(v);
}
}
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 ShortcutInfo) {
ShortcutInfo item = (ShortcutInfo) tag;
if (!v.isInTouchMode()) {
return false;
}
mEmptyCellRank = item.rank;
mCurrentDragView = v;
mDragController.addDragListener(this);
if (options.isAccessibleDrag) {
mDragController.addDragListener(new AccessibleDragListenerAdapter(
mContent, CellLayout.FOLDER_ACCESSIBILITY_DRAG) {
@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 ShortcutInfo) {
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((ShortcutInfo) dragObject.dragInfo, true);
}
}
mDragInProgress = true;
mItemAddedBackToSelfViaIcon = false;
}
@Override
public void onDragEnd() {
if (mIsExternalDrag && mDragInProgress) {
completeDragExit();
}
mDragController.removeDragListener(this);
}
public boolean isEditingName() {
return mIsEditingName;
}
public void startEditingFolderName() {
post(new Runnable() {
@Override
public void run() {
mFolderName.setHint("");
mIsEditingName = true;
}
});
}
@Override
public boolean onBackKey() {
mFolderName.setHint(sHintText);
// Convert to a string here to ensure that no other state associated with the text field
// gets saved.
String newTitle = mFolderName.getText().toString();
mInfo.setTitle(newTitle);
mLauncher.getModelWriter().updateItemInDatabase(mInfo);
Utilities.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 (actionId == EditorInfo.IME_ACTION_DONE) {
mFolderName.dispatchBackKey();
return true;
}
return false;
}
@Override
public ExtendedEditText getActiveTextView() {
return isEditingName() ? mFolderName : null;
}
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;
ArrayList<ShortcutInfo> children = info.contents;
Collections.sort(children, ITEM_POS_COMPARATOR);
ArrayList<ShortcutInfo> overflow = mContent.bindItems(children);
// If our folder has too many items we prune them from the list. This is an issue
// when upgrading from the old Folders implementation which could contain an unlimited
// number of items.
// TODO: Remove this, as with multi-page folders, there will never be any overflow
for (ShortcutInfo item: overflow) {
mInfo.remove(item, false);
mLauncher.getModelWriter().deleteItemFromDatabase(item);
}
DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams();
if (lp == null) {
lp = new DragLayer.LayoutParams(0, 0);
lp.customPosition = true;
setLayoutParams(lp);
}
centerAboutIcon();
mItemsInvalidated = true;
updateTextViewFocus();
mInfo.addListener(this);
if (!sDefaultFolderName.contentEquals(mInfo.title)) {
mFolderName.setText(mInfo.title);
} else {
mFolderName.setText("");
}
// In case any children didn't come across during loading, clean up the folder accordingly
mFolderIcon.post(new Runnable() {
public void run() {
if (getItemCount() <= 1) {
replaceFolderWithFinalItem();
}
}
});
}
/**
* 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);
}
/**
* This method is intended to make the UserFolder to be visually identical in size and position
* to its associated FolderIcon. This allows for a seamless transition into the expanded state.
*/
private void positionAndSizeAsIcon() {
if (!(getParent() instanceof DragLayer)) return;
setScaleX(0.8f);
setScaleY(0.8f);
setAlpha(0f);
mState = STATE_SMALL;
}
private void prepareReveal() {
setScaleX(1f);
setScaleY(1f);
setAlpha(1f);
mState = STATE_SMALL;
}
/**
* 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() {
Folder openFolder = getOpen(mLauncher);
if (openFolder != null && openFolder != this) {
// Close any open folder before opening a folder.
openFolder.close(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);
}
mIsOpen = true;
mContent.completePendingPageChanges();
if (!mDragInProgress) {
// Open on the first page.
mContent.snapToPageImmediately(0);
}
// 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;
final Runnable onCompleteRunnable;
prepareReveal();
centerAboutIcon();
mFolderIcon.growAndFadeOut();
AnimatorSet anim = LauncherAnimUtils.createAnimatorSet();
int width = getFolderWidth();
int height = getFolderHeight();
float transX = - 0.075f * (width / 2 - getPivotX());
float transY = - 0.075f * (height / 2 - getPivotY());
setTranslationX(transX);
setTranslationY(transY);
PropertyValuesHolder tx = PropertyValuesHolder.ofFloat(TRANSLATION_X, transX, 0);
PropertyValuesHolder ty = PropertyValuesHolder.ofFloat(TRANSLATION_Y, transY, 0);
Animator drift = ObjectAnimator.ofPropertyValuesHolder(this, tx, ty);
drift.setDuration(mMaterialExpandDuration);
drift.setStartDelay(mMaterialExpandStagger);
drift.setInterpolator(new LogDecelerateInterpolator(100, 0));
int rx = (int) Math.max(Math.max(width - getPivotX(), 0), getPivotX());
int ry = (int) Math.max(Math.max(height - getPivotY(), 0), getPivotY());
float radius = (float) Math.hypot(rx, ry);
Animator reveal = new CircleRevealOutlineProvider((int) getPivotX(),
(int) getPivotY(), 0, radius).createRevealAnimator(this);
reveal.setDuration(mMaterialExpandDuration);
reveal.setInterpolator(new LogDecelerateInterpolator(100, 0));
mContent.setAlpha(0f);
Animator iconsAlpha = ObjectAnimator.ofFloat(mContent, "alpha", 0f, 1f);
iconsAlpha.setDuration(mMaterialExpandDuration);
iconsAlpha.setStartDelay(mMaterialExpandStagger);
iconsAlpha.setInterpolator(new AccelerateInterpolator(1.5f));
mFooter.setAlpha(0f);
Animator textAlpha = ObjectAnimator.ofFloat(mFooter, "alpha", 0f, 1f);
textAlpha.setDuration(mMaterialExpandDuration);
textAlpha.setStartDelay(mMaterialExpandStagger);
textAlpha.setInterpolator(new AccelerateInterpolator(1.5f));
anim.play(drift);
anim.play(iconsAlpha);
anim.play(textAlpha);
anim.play(reveal);
mContent.setLayerType(LAYER_TYPE_HARDWARE, null);
mFooter.setLayerType(LAYER_TYPE_HARDWARE, null);
onCompleteRunnable = new Runnable() {
@Override
public void run() {
mContent.setLayerType(LAYER_TYPE_NONE, null);
mFooter.setLayerType(LAYER_TYPE_NONE, null);
}
};
anim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationStart(Animator animation) {
Utilities.sendCustomAccessibilityEvent(
Folder.this,
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED,
mContent.getAccessibilityDescription());
mState = STATE_ANIMATING;
}
@Override
public void onAnimationEnd(Animator animation) {
mState = STATE_OPEN;
onCompleteRunnable.run();
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();
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());
// Notify the accessibility manager that this folder "window" has appeared and occluded
// the workspace items
sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
dragLayer.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
}
public void beginExternalDrag() {
mEmptyCellRank = mContent.allocateRankForNewItem();
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);
}
@Override
protected boolean isOfType(int type) {
return (type & TYPE_FOLDER) != 0;
}
@Override
protected void handleClose(boolean animate) {
mIsOpen = false;
if (isEditingName()) {
mFolderName.dispatchBackKey();
}
if (mFolderIcon != null) {
mFolderIcon.shrinkAndFadeIn(animate);
}
if (!(getParent() instanceof DragLayer)) return;
DragLayer parent = (DragLayer) getParent();
if (animate) {
animateClosed();
} else {
closeComplete(false);
}
// Notify the accessibility manager that this folder "window" has disappeared and no
// longer occludes the workspace items
parent.sendAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED);
}
private void animateClosed() {
final ObjectAnimator oa = LauncherAnimUtils.ofViewAlphaAndScale(this, 0, 0.9f, 0.9f);
oa.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
setLayerType(LAYER_TYPE_NONE, null);
closeComplete(true);
}
@Override
public void onAnimationStart(Animator animation) {
Utilities.sendCustomAccessibilityEvent(
Folder.this,
AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED,
getContext().getString(R.string.folder_closed));
mState = STATE_ANIMATING;
}
});
oa.setDuration(mExpandDuration);
setLayerType(LAYER_TYPE_HARDWARE, null);
oa.start();
}
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 (wasAnimated) {
mFolderIcon.requestFocus();
}
if (mRearrangeOnClose) {
rearrangeChildren();
mRearrangeOnClose = false;
}
if (getItemCount() <= 1) {
if (!mDragInProgress && !mSuppressFolderDeletion) {
replaceFolderWithFinalItem();
} else if (mDragInProgress) {
mDeleteFolderOnDropCompleted = true;
}
}
mSuppressFolderDeletion = false;
clearDragInfo();
mState = STATE_SMALL;
}
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) &&
!isFull());
}
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);
}
@Override
public void onDragOver(DragObject d) {
onDragOver(d, REORDER_DELAY);
}
private int getTargetRank(DragObject d, float[] recycle) {
recycle = d.getVisualCenter(recycle);
return mContent.findNearestArea(
(int) recycle[0] - getPaddingLeft(), (int) recycle[1] - getPaddingTop());
}
@Thunk void onDragOver(DragObject d, int reorderDelay) {
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);
}
}
public void onDropCompleted(final View target, final DragObject d,
final boolean isFlingToDelete, final boolean success) {
if (mDeferDropAfterUninstall) {
mDeferredAction = new Runnable() {
public void run() {
onDropCompleted(target, d, isFlingToDelete, success);
mDeferredAction = null;
}
};
return;
}
boolean beingCalledAfterUninstall = mDeferredAction != null;
boolean successfulDrop =
success && (!beingCalledAfterUninstall || mUninstallSuccessful);
if (successfulDrop) {
if (mDeleteFolderOnDropCompleted && !mItemAddedBackToSelfViaIcon && target != this) {
replaceFolderWithFinalItem();
}
} else {
// The drag failed, we need to return the item to the folder
ShortcutInfo info = (ShortcutInfo) d.dragInfo;
View icon = (mCurrentDragView != null && mCurrentDragView.getTag() == info)
? mCurrentDragView : mContent.createNewView(info);
ArrayList<View> views = getItemsInReadingOrder();
views.add(info.rank, icon);
mContent.arrangeChildren(views, views.size());
mItemsInvalidated = true;
try (SuppressInfoChanges s = new SuppressInfoChanges()) {
mFolderIcon.onDrop(d);
}
}
if (target != this) {
if (mOnExitAlarm.alarmPending()) {
mOnExitAlarm.cancelAlarm();
if (!successfulDrop) {
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();
// 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());
}
if (!isFlingToDelete) {
// Fling to delete already exits spring loaded mode after the animation finishes.
mLauncher.exitSpringLoadedDragModeDelayed(successfulDrop,
Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
}
}
@Override
public void deferCompleteDropAfterUninstallActivity() {
mDeferDropAfterUninstall = true;
}
@Override
public void onDragObjectRemoved(boolean success) {
mDeferDropAfterUninstall = false;
mUninstallSuccessful = success;
if (mDeferredAction != null) {
mDeferredAction.run();
}
}
@Override
public float getIntrinsicIconScaleFactor() {
return 1f;
}
@Override
public boolean supportsDeleteDropTarget() {
return true;
}
private void updateItemLocationsInDatabaseBatch() {
ArrayList<View> list = getItemsInReadingOrder();
ArrayList<ItemInfo> items = new ArrayList<ItemInfo>();
for (int i = 0; i < list.size(); i++) {
View v = list.get(i);
ItemInfo info = (ItemInfo) v.getTag();
info.rank = i;
items.add(info);
}
mLauncher.getModelWriter().moveItemsInDatabase(items, mInfo.id, 0);
}
public void notifyDrop() {
if (mDragInProgress) {
mItemAddedBackToSelfViaIcon = true;
}
}
public boolean isDropEnabled() {
return true;
}
public boolean isFull() {
return mContent.isFull();
}
private void centerAboutIcon() {
DeviceProfile grid = mLauncher.getDeviceProfile();
DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams();
DragLayer parent = (DragLayer) mLauncher.findViewById(R.id.drag_layer);
int width = getFolderWidth();
int height = getFolderHeight();
float scale = 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
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);
mFolderIconPivotX = (int) (mFolderIcon.getMeasuredWidth() *
(1.0f * folderPivotX / width));
mFolderIconPivotY = (int) (mFolderIcon.getMeasuredHeight() *
(1.0f * folderPivotY / height));
lp.width = width;
lp.height = height;
lp.x = left;
lp.y = top;
}
public float getPivotXForIconAnimation() {
return mFolderIconPivotX;
}
public float getPivotYForIconAnimation() {
return mFolderIconPivotY;
}
private 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() {
rearrangeChildren(-1);
}
/**
* Rearranges the children based on their rank.
* @param itemCount if greater than the total children count, empty spaces are left at the end,
* otherwise it is ignored.
*/
public void rearrangeChildren(int itemCount) {
ArrayList<View> views = getItemsInReadingOrder();
mContent.arrangeChildren(views, Math.max(itemCount, views.size()));
mItemsInvalidated = true;
}
public int getItemCount() {
return mContent.getItemCount();
}
@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 = mInfo.contents.size();
if (itemCount <= 1) {
View newIcon = 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);
ShortcutInfo 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();
}
}
}
};
View finalChild = mContent.getLastItem();
if (finalChild != null) {
mFolderIcon.performDestroyAnimation(finalChild, 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;
}
});
}
}
public void onDrop(DragObject d) {
Runnable cleanUpRunnable = null;
// If we are coming from All Apps space, we defer removing the extra empty screen
// until the folder closes
if (d.dragSource != mLauncher.getWorkspace() && !(d.dragSource instanceof Folder)) {
cleanUpRunnable = new Runnable() {
@Override
public void run() {
mLauncher.exitSpringLoadedDragModeDelayed(true,
Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT,
null);
}
};
}
// 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();
View currentDragView;
final ShortcutInfo si;
if (d.dragInfo instanceof AppInfo) {
// Came from all apps -- make a copy.
si = ((AppInfo) d.dragInfo).makeShortcut();
} else {
// ShortcutInfo
si = (ShortcutInfo) d.dragInfo;
}
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 ShortcutInfo is updated appropriately.
mLauncher.getModelWriter().addOrMoveItemInDatabase(
si, mInfo.id, 0, si.cellX, si.cellY);
// We only need to update the locations if it doesn't get handled in #onDropCompleted.
if (d.dragSource != this) {
updateItemLocationsInDatabaseBatch();
}
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,
cleanUpRunnable, 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, 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());
}
if (d.stateAnnouncer != null) {
d.stateAnnouncer.completeAction(R.string.item_moved);
}
}
// 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(ShortcutInfo info) {
View v = getViewForInfo(info);
v.setVisibility(INVISIBLE);
}
public void showItem(ShortcutInfo info) {
View v = getViewForInfo(info);
v.setVisibility(VISIBLE);
}
@Override
public void onAdd(ShortcutInfo item) {
mContent.createAndAddViewForRank(item, mContent.allocateRankForNewItem());
mItemsInvalidated = true;
mLauncher.getModelWriter().addOrMoveItemInDatabase(
item, mInfo.id, 0, item.cellX, item.cellY);
}
public void onRemove(ShortcutInfo 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 ShortcutInfo item) {
return mContent.iterateOverItems(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View view) {
return info == item;
}
});
}
@Override
public void onItemsChanged(boolean animate) {
updateTextViewFocus();
}
@Override
public void prepareAutoUpdate() {
close(false);
}
public void onTitleChanged(CharSequence title) {
}
public ArrayList<View> getItemsInReadingOrder() {
if (mItemsInvalidated) {
mItemsInReadingOrder.clear();
mContent.iterateOverItems(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View view) {
mItemsInReadingOrder.add(view);
return false;
}
});
mItemsInvalidated = false;
}
return mItemsInReadingOrder;
}
public void onFocusChange(View v, boolean hasFocus) {
if (v == mFolderName) {
if (hasFocus) {
startEditingFolderName();
} else {
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));
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, 1);
}
}
// 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);
}
}
