/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.folder;
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import static com.android.launcher3.folder.ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
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import static com.android.launcher3.folder.PreviewItemManager.INITIAL_ITEM_ANIMATION_DURATION;
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import android.animation.Animator;
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import android.animation.AnimatorListenerAdapter;
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import android.animation.ObjectAnimator;
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import android.content.Context;
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import android.graphics.Canvas;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.util.AttributeSet;
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import android.util.Property;
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import android.view.LayoutInflater;
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import android.view.MotionEvent;
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import android.view.View;
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import android.view.ViewConfiguration;
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import android.view.ViewDebug;
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import android.view.ViewGroup;
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import android.widget.FrameLayout;
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import androidx.annotation.NonNull;
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import com.android.launcher3.Alarm;
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import com.android.launcher3.AppInfo;
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import com.android.launcher3.BubbleTextView;
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import com.android.launcher3.CellLayout;
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import com.android.launcher3.CheckLongPressHelper;
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import com.android.launcher3.DeviceProfile;
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import com.android.launcher3.DropTarget.DragObject;
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import com.android.launcher3.FolderInfo;
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import com.android.launcher3.FolderInfo.FolderListener;
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import com.android.launcher3.ItemInfo;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.LauncherSettings;
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import com.android.launcher3.OnAlarmListener;
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import com.android.launcher3.R;
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import com.android.launcher3.SimpleOnStylusPressListener;
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import com.android.launcher3.StylusEventHelper;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.Workspace;
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import com.android.launcher3.WorkspaceItemInfo;
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import com.android.launcher3.anim.Interpolators;
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import com.android.launcher3.dot.FolderDotInfo;
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import com.android.launcher3.dragndrop.BaseItemDragListener;
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import com.android.launcher3.dragndrop.DragLayer;
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import com.android.launcher3.dragndrop.DragView;
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import com.android.launcher3.icons.DotRenderer;
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import com.android.launcher3.touch.ItemClickHandler;
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import com.android.launcher3.util.Thunk;
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import com.android.launcher3.widget.PendingAddShortcutInfo;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* An icon that can appear on in the workspace representing an {@link Folder}.
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*/
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public class FolderIcon extends FrameLayout implements FolderListener {
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@Thunk Launcher mLauncher;
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@Thunk Folder mFolder;
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private FolderInfo mInfo;
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private CheckLongPressHelper mLongPressHelper;
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private StylusEventHelper mStylusEventHelper;
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static final int DROP_IN_ANIMATION_DURATION = 400;
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// Flag whether the folder should open itself when an item is dragged over is enabled.
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public static final boolean SPRING_LOADING_ENABLED = true;
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// Delay when drag enters until the folder opens, in miliseconds.
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private static final int ON_OPEN_DELAY = 800;
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@Thunk BubbleTextView mFolderName;
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PreviewBackground mBackground = new PreviewBackground();
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private boolean mBackgroundIsVisible = true;
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FolderIconPreviewVerifier mPreviewVerifier;
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ClippedFolderIconLayoutRule mPreviewLayoutRule;
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private PreviewItemManager mPreviewItemManager;
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private PreviewItemDrawingParams mTmpParams = new PreviewItemDrawingParams(0, 0, 0, 0);
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private List<BubbleTextView> mCurrentPreviewItems = new ArrayList<>();
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boolean mAnimating = false;
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private float mSlop;
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private Alarm mOpenAlarm = new Alarm();
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@ViewDebug.ExportedProperty(category = "launcher", deepExport = true)
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private FolderDotInfo mDotInfo = new FolderDotInfo();
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private DotRenderer mDotRenderer;
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@ViewDebug.ExportedProperty(category = "launcher", deepExport = true)
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private DotRenderer.DrawParams mDotParams;
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private float mDotScale;
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private Animator mDotScaleAnim;
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private static final Property<FolderIcon, Float> DOT_SCALE_PROPERTY
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= new Property<FolderIcon, Float>(Float.TYPE, "dotScale") {
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@Override
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public Float get(FolderIcon folderIcon) {
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return folderIcon.mDotScale;
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}
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@Override
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public void set(FolderIcon folderIcon, Float value) {
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folderIcon.mDotScale = value;
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folderIcon.invalidate();
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}
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};
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public FolderIcon(Context context, AttributeSet attrs) {
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super(context, attrs);
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init();
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}
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public FolderIcon(Context context) {
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super(context);
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init();
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}
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private void init() {
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mLongPressHelper = new CheckLongPressHelper(this);
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mStylusEventHelper = new StylusEventHelper(new SimpleOnStylusPressListener(this), this);
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mPreviewLayoutRule = new ClippedFolderIconLayoutRule();
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mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
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mPreviewItemManager = new PreviewItemManager(this);
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mDotParams = new DotRenderer.DrawParams();
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}
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public static FolderIcon fromXml(int resId, Launcher launcher, ViewGroup group,
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FolderInfo folderInfo) {
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@SuppressWarnings("all") // suppress dead code warning
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final boolean error = INITIAL_ITEM_ANIMATION_DURATION >= DROP_IN_ANIMATION_DURATION;
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if (error) {
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throw new IllegalStateException("DROP_IN_ANIMATION_DURATION must be greater than " +
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"INITIAL_ITEM_ANIMATION_DURATION, as sequencing of adding first two items " +
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"is dependent on this");
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}
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DeviceProfile grid = launcher.getWallpaperDeviceProfile();
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FolderIcon icon = (FolderIcon) LayoutInflater.from(group.getContext())
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.inflate(resId, group, false);
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icon.setClipToPadding(false);
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icon.mFolderName = icon.findViewById(R.id.folder_icon_name);
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icon.mFolderName.setText(folderInfo.title);
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icon.mFolderName.setCompoundDrawablePadding(0);
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FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) icon.mFolderName.getLayoutParams();
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lp.topMargin = grid.iconSizePx + grid.iconDrawablePaddingPx;
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icon.setTag(folderInfo);
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icon.setOnClickListener(ItemClickHandler.INSTANCE);
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icon.mInfo = folderInfo;
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icon.mLauncher = launcher;
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icon.mDotRenderer = grid.mDotRenderer;
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icon.setContentDescription(launcher.getString(R.string.folder_name_format, folderInfo.title));
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Folder folder = Folder.fromXml(launcher);
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folder.setDragController(launcher.getDragController());
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folder.setFolderIcon(icon);
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folder.bind(folderInfo);
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icon.setFolder(folder);
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icon.setAccessibilityDelegate(launcher.getAccessibilityDelegate());
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folderInfo.addListener(icon);
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icon.setOnFocusChangeListener(launcher.mFocusHandler);
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return icon;
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}
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public void animateBgShadowAndStroke() {
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mBackground.fadeInBackgroundShadow();
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mBackground.animateBackgroundStroke();
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}
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public BubbleTextView getFolderName() {
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return mFolderName;
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}
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public void getPreviewBounds(Rect outBounds) {
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mPreviewItemManager.recomputePreviewDrawingParams();
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mBackground.getBounds(outBounds);
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}
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public float getBackgroundStrokeWidth() {
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return mBackground.getStrokeWidth();
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}
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public Folder getFolder() {
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return mFolder;
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}
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private void setFolder(Folder folder) {
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mFolder = folder;
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mPreviewVerifier = new FolderIconPreviewVerifier(mLauncher.getDeviceProfile().inv);
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mPreviewVerifier.setFolderInfo(mFolder.getInfo());
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updatePreviewItems(false);
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}
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private boolean willAcceptItem(ItemInfo item) {
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final int itemType = item.itemType;
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return ((itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
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itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT ||
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itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) &&
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item != mInfo && !mFolder.isOpen());
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}
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public boolean acceptDrop(ItemInfo dragInfo) {
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return !mFolder.isDestroyed() && willAcceptItem(dragInfo);
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}
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public void addItem(WorkspaceItemInfo item) {
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addItem(item, true);
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}
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public void addItem(WorkspaceItemInfo item, boolean animate) {
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mInfo.add(item, animate);
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}
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public void removeItem(WorkspaceItemInfo item, boolean animate) {
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mInfo.remove(item, animate);
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}
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public void onDragEnter(ItemInfo dragInfo) {
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if (mFolder.isDestroyed() || !willAcceptItem(dragInfo)) return;
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CellLayout.LayoutParams lp = (CellLayout.LayoutParams) getLayoutParams();
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CellLayout cl = (CellLayout) getParent().getParent();
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mBackground.animateToAccept(cl, lp.cellX, lp.cellY);
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mOpenAlarm.setOnAlarmListener(mOnOpenListener);
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if (SPRING_LOADING_ENABLED &&
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((dragInfo instanceof AppInfo)
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|| (dragInfo instanceof WorkspaceItemInfo)
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|| (dragInfo instanceof PendingAddShortcutInfo))) {
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mOpenAlarm.setAlarm(ON_OPEN_DELAY);
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}
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}
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OnAlarmListener mOnOpenListener = new OnAlarmListener() {
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public void onAlarm(Alarm alarm) {
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mFolder.beginExternalDrag();
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mFolder.animateOpen();
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}
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};
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public Drawable prepareCreateAnimation(final View destView) {
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return mPreviewItemManager.prepareCreateAnimation(destView);
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}
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public void performCreateAnimation(final WorkspaceItemInfo destInfo, final View destView,
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final WorkspaceItemInfo srcInfo, final DragView srcView, Rect dstRect,
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float scaleRelativeToDragLayer) {
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prepareCreateAnimation(destView);
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addItem(destInfo);
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// This will animate the first item from it's position as an icon into its
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// position as the first item in the preview
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mPreviewItemManager.createFirstItemAnimation(false /* reverse */, null)
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.start();
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// This will animate the dragView (srcView) into the new folder
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onDrop(srcInfo, srcView, dstRect, scaleRelativeToDragLayer, 1,
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false /* itemReturnedOnFailedDrop */);
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}
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public void performDestroyAnimation(Runnable onCompleteRunnable) {
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// This will animate the final item in the preview to be full size.
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mPreviewItemManager.createFirstItemAnimation(true /* reverse */, onCompleteRunnable)
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.start();
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}
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public void onDragExit() {
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mBackground.animateToRest();
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mOpenAlarm.cancelAlarm();
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}
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private void onDrop(final WorkspaceItemInfo item, DragView animateView, Rect finalRect,
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float scaleRelativeToDragLayer, int index,
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boolean itemReturnedOnFailedDrop) {
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item.cellX = -1;
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item.cellY = -1;
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// Typically, the animateView corresponds to the DragView; however, if this is being done
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// after a configuration activity (ie. for a Shortcut being dragged from AllApps) we
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// will not have a view to animate
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if (animateView != null) {
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DragLayer dragLayer = mLauncher.getDragLayer();
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Rect from = new Rect();
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dragLayer.getViewRectRelativeToSelf(animateView, from);
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Rect to = finalRect;
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if (to == null) {
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to = new Rect();
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Workspace workspace = mLauncher.getWorkspace();
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// Set cellLayout and this to it's final state to compute final animation locations
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workspace.setFinalTransitionTransform();
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float scaleX = getScaleX();
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float scaleY = getScaleY();
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setScaleX(1.0f);
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setScaleY(1.0f);
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scaleRelativeToDragLayer = dragLayer.getDescendantRectRelativeToSelf(this, to);
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// Finished computing final animation locations, restore current state
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setScaleX(scaleX);
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setScaleY(scaleY);
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workspace.resetTransitionTransform();
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}
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int numItemsInPreview = Math.min(MAX_NUM_ITEMS_IN_PREVIEW, index + 1);
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boolean itemAdded = false;
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if (itemReturnedOnFailedDrop || index >= MAX_NUM_ITEMS_IN_PREVIEW) {
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List<BubbleTextView> oldPreviewItems = new ArrayList<>(mCurrentPreviewItems);
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addItem(item, false);
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mCurrentPreviewItems.clear();
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mCurrentPreviewItems.addAll(getPreviewItems());
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if (!oldPreviewItems.equals(mCurrentPreviewItems)) {
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for (int i = 0; i < mCurrentPreviewItems.size(); ++i) {
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if (mCurrentPreviewItems.get(i).getTag().equals(item)) {
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// If the item dropped is going to be in the preview, we update the
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// index here to reflect its position in the preview.
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index = i;
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}
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}
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mPreviewItemManager.hidePreviewItem(index, true);
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mPreviewItemManager.onDrop(oldPreviewItems, mCurrentPreviewItems, item);
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itemAdded = true;
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} else {
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removeItem(item, false);
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}
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}
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if (!itemAdded) {
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addItem(item);
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}
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int[] center = new int[2];
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float scale = getLocalCenterForIndex(index, numItemsInPreview, center);
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center[0] = (int) Math.round(scaleRelativeToDragLayer * center[0]);
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center[1] = (int) Math.round(scaleRelativeToDragLayer * center[1]);
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to.offset(center[0] - animateView.getMeasuredWidth() / 2,
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center[1] - animateView.getMeasuredHeight() / 2);
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float finalAlpha = index < MAX_NUM_ITEMS_IN_PREVIEW ? 0.5f : 0f;
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float finalScale = scale * scaleRelativeToDragLayer;
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dragLayer.animateView(animateView, from, to, finalAlpha,
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1, 1, finalScale, finalScale, DROP_IN_ANIMATION_DURATION,
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Interpolators.DEACCEL_2, Interpolators.ACCEL_2,
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null, DragLayer.ANIMATION_END_DISAPPEAR, null);
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mFolder.hideItem(item);
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if (!itemAdded) mPreviewItemManager.hidePreviewItem(index, true);
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final int finalIndex = index;
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postDelayed(new Runnable() {
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public void run() {
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mPreviewItemManager.hidePreviewItem(finalIndex, false);
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mFolder.showItem(item);
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invalidate();
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}
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}, DROP_IN_ANIMATION_DURATION);
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} else {
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addItem(item);
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}
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}
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public void onDrop(DragObject d, boolean itemReturnedOnFailedDrop) {
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WorkspaceItemInfo item;
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if (d.dragInfo instanceof AppInfo) {
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// Came from all apps -- make a copy
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item = ((AppInfo) d.dragInfo).makeWorkspaceItem();
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} else if (d.dragSource instanceof BaseItemDragListener){
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// Came from a different window -- make a copy
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item = new WorkspaceItemInfo((WorkspaceItemInfo) d.dragInfo);
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} else {
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item = (WorkspaceItemInfo) d.dragInfo;
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}
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mFolder.notifyDrop();
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onDrop(item, d.dragView, null, 1.0f, mInfo.contents.size(),
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itemReturnedOnFailedDrop);
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}
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public void setDotInfo(FolderDotInfo dotInfo) {
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updateDotScale(mDotInfo.hasDot(), dotInfo.hasDot());
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mDotInfo = dotInfo;
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}
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public ClippedFolderIconLayoutRule getLayoutRule() {
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return mPreviewLayoutRule;
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}
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/**
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* Sets mDotScale to 1 or 0, animating if wasDotted or isDotted is false
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* (the dot is being added or removed).
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*/
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private void updateDotScale(boolean wasDotted, boolean isDotted) {
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float newDotScale = isDotted ? 1f : 0f;
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// Animate when a dot is first added or when it is removed.
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if ((wasDotted ^ isDotted) && isShown()) {
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animateDotScale(newDotScale);
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} else {
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cancelDotScaleAnim();
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mDotScale = newDotScale;
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invalidate();
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}
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}
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private void cancelDotScaleAnim() {
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if (mDotScaleAnim != null) {
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mDotScaleAnim.cancel();
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}
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}
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public void animateDotScale(float... dotScales) {
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cancelDotScaleAnim();
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mDotScaleAnim = ObjectAnimator.ofFloat(this, DOT_SCALE_PROPERTY, dotScales);
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mDotScaleAnim.addListener(new AnimatorListenerAdapter() {
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@Override
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public void onAnimationEnd(Animator animation) {
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mDotScaleAnim = null;
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}
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});
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mDotScaleAnim.start();
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}
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public boolean hasDot() {
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return mDotInfo != null && mDotInfo.hasDot();
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}
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private float getLocalCenterForIndex(int index, int curNumItems, int[] center) {
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mTmpParams = mPreviewItemManager.computePreviewItemDrawingParams(
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Math.min(MAX_NUM_ITEMS_IN_PREVIEW, index), curNumItems, mTmpParams);
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mTmpParams.transX += mBackground.basePreviewOffsetX;
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mTmpParams.transY += mBackground.basePreviewOffsetY;
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float intrinsicIconSize = mPreviewItemManager.getIntrinsicIconSize();
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float offsetX = mTmpParams.transX + (mTmpParams.scale * intrinsicIconSize) / 2;
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float offsetY = mTmpParams.transY + (mTmpParams.scale * intrinsicIconSize) / 2;
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center[0] = Math.round(offsetX);
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center[1] = Math.round(offsetY);
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return mTmpParams.scale;
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}
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public void setFolderBackground(PreviewBackground bg) {
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mBackground = bg;
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mBackground.setInvalidateDelegate(this);
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}
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public void setBackgroundVisible(boolean visible) {
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mBackgroundIsVisible = visible;
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invalidate();
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}
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public PreviewBackground getFolderBackground() {
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return mBackground;
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}
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public PreviewItemManager getPreviewItemManager() {
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return mPreviewItemManager;
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}
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@Override
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protected void dispatchDraw(Canvas canvas) {
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super.dispatchDraw(canvas);
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if (!mBackgroundIsVisible) return;
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mPreviewItemManager.recomputePreviewDrawingParams();
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if (!mBackground.drawingDelegated()) {
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mBackground.drawBackground(canvas);
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}
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if (mFolder == null) return;
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if (mFolder.getItemCount() == 0 && !mAnimating) return;
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final int saveCount = canvas.save();
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canvas.clipPath(mBackground.getClipPath());
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mPreviewItemManager.draw(canvas);
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canvas.restoreToCount(saveCount);
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if (!mBackground.drawingDelegated()) {
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mBackground.drawBackgroundStroke(canvas);
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}
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drawDot(canvas);
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}
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public void drawDot(Canvas canvas) {
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if ((mDotInfo != null && mDotInfo.hasDot()) || mDotScale > 0) {
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Rect iconBounds = mDotParams.iconBounds;
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BubbleTextView.getIconBounds(this, iconBounds,
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mLauncher.getWallpaperDeviceProfile().iconSizePx);
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float iconScale = (float) mBackground.previewSize / iconBounds.width();
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Utilities.scaleRectAboutCenter(iconBounds, iconScale);
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// If we are animating to the accepting state, animate the dot out.
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mDotParams.scale = Math.max(0, mDotScale - mBackground.getScaleProgress());
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mDotParams.color = mBackground.getDotColor();
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mDotRenderer.draw(canvas, mDotParams);
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}
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}
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public void setTextVisible(boolean visible) {
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if (visible) {
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mFolderName.setVisibility(VISIBLE);
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} else {
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mFolderName.setVisibility(INVISIBLE);
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}
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}
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public boolean getTextVisible() {
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return mFolderName.getVisibility() == VISIBLE;
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}
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/**
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* Returns the list of preview items displayed in the icon.
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*/
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public List<BubbleTextView> getPreviewItems() {
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return getPreviewItemsOnPage(0);
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}
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/**
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* Returns the list of "preview items" on {@param page}.
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*/
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public List<BubbleTextView> getPreviewItemsOnPage(int page) {
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mPreviewVerifier.setFolderInfo(mFolder.getInfo());
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List<BubbleTextView> itemsToDisplay = new ArrayList<>();
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List<BubbleTextView> itemsOnPage = mFolder.getItemsOnPage(page);
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int numItems = itemsOnPage.size();
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for (int rank = 0; rank < numItems; ++rank) {
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if (mPreviewVerifier.isItemInPreview(page, rank)) {
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itemsToDisplay.add(itemsOnPage.get(rank));
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}
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if (itemsToDisplay.size() == MAX_NUM_ITEMS_IN_PREVIEW) {
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break;
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}
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}
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return itemsToDisplay;
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}
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@Override
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protected boolean verifyDrawable(@NonNull Drawable who) {
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return mPreviewItemManager.verifyDrawable(who) || super.verifyDrawable(who);
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}
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@Override
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public void onItemsChanged(boolean animate) {
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updatePreviewItems(animate);
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invalidate();
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requestLayout();
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}
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private void updatePreviewItems(boolean animate) {
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mPreviewItemManager.updatePreviewItems(animate);
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mCurrentPreviewItems.clear();
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mCurrentPreviewItems.addAll(getPreviewItems());
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}
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@Override
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public void prepareAutoUpdate() {
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}
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@Override
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public void onAdd(WorkspaceItemInfo item, int rank) {
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boolean wasDotted = mDotInfo.hasDot();
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mDotInfo.addDotInfo(mLauncher.getDotInfoForItem(item));
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boolean isDotted = mDotInfo.hasDot();
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updateDotScale(wasDotted, isDotted);
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invalidate();
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requestLayout();
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}
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@Override
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public void onRemove(WorkspaceItemInfo item) {
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boolean wasDotted = mDotInfo.hasDot();
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mDotInfo.subtractDotInfo(mLauncher.getDotInfoForItem(item));
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boolean isDotted = mDotInfo.hasDot();
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updateDotScale(wasDotted, isDotted);
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invalidate();
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requestLayout();
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}
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@Override
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public void onTitleChanged(CharSequence title) {
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mFolderName.setText(title);
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setContentDescription(getContext().getString(R.string.folder_name_format, title));
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}
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@Override
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public boolean onTouchEvent(MotionEvent event) {
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// Call the superclass onTouchEvent first, because sometimes it changes the state to
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// isPressed() on an ACTION_UP
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boolean result = super.onTouchEvent(event);
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// Check for a stylus button press, if it occurs cancel any long press checks.
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if (mStylusEventHelper.onMotionEvent(event)) {
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mLongPressHelper.cancelLongPress();
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return true;
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}
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switch (event.getAction()) {
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case MotionEvent.ACTION_DOWN:
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mLongPressHelper.postCheckForLongPress();
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break;
|
case MotionEvent.ACTION_CANCEL:
|
case MotionEvent.ACTION_UP:
|
mLongPressHelper.cancelLongPress();
|
break;
|
case MotionEvent.ACTION_MOVE:
|
if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) {
|
mLongPressHelper.cancelLongPress();
|
}
|
break;
|
}
|
return result;
|
}
|
|
@Override
|
public void cancelLongPress() {
|
super.cancelLongPress();
|
mLongPressHelper.cancelLongPress();
|
}
|
|
public void removeListeners() {
|
mInfo.removeListener(this);
|
mInfo.removeListener(mFolder);
|
}
|
|
public void clearLeaveBehindIfExists() {
|
((CellLayout.LayoutParams) getLayoutParams()).canReorder = true;
|
if (mInfo.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
|
CellLayout cl = (CellLayout) getParent().getParent();
|
cl.clearFolderLeaveBehind();
|
}
|
}
|
|
public void drawLeaveBehindIfExists() {
|
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) getLayoutParams();
|
// While the folder is open, the position of the icon cannot change.
|
lp.canReorder = false;
|
if (mInfo.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
|
CellLayout cl = (CellLayout) getParent().getParent();
|
cl.setFolderLeaveBehindCell(lp.cellX, lp.cellY);
|
}
|
}
|
|
public void onFolderClose(int currentPage) {
|
mPreviewItemManager.onFolderClose(currentPage);
|
}
|
}
|
