| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.launcher2; |
| |
| import android.app.WallpaperManager; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ComponentName; |
| import android.content.res.TypedArray; |
| import android.content.pm.PackageManager; |
| import android.graphics.Canvas; |
| import android.graphics.RectF; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.util.AttributeSet; |
| import android.view.MotionEvent; |
| import android.view.VelocityTracker; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.view.ViewGroup; |
| import android.view.ViewParent; |
| import android.widget.Scroller; |
| import android.widget.TextView; |
| import android.os.Parcelable; |
| import android.os.Parcel; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * The workspace is a wide area with a wallpaper and a finite number of screens. Each |
| * screen contains a number of icons, folders or widgets the user can interact with. |
| * A workspace is meant to be used with a fixed width only. |
| */ |
| public class Workspace extends ViewGroup implements DropTarget, DragSource, DragScroller { |
| private static final String TAG = "Launcher.Workspace"; |
| private static final int INVALID_SCREEN = -1; |
| |
| /** |
| * The velocity at which a fling gesture will cause us to snap to the next screen |
| */ |
| private static final int SNAP_VELOCITY = 1000; |
| |
| private final WallpaperManager mWallpaperManager; |
| |
| private int mDefaultScreen; |
| |
| private boolean mFirstLayout = true; |
| |
| private int mCurrentScreen; |
| private int mNextScreen = INVALID_SCREEN; |
| private Scroller mScroller; |
| private VelocityTracker mVelocityTracker; |
| |
| /** |
| * CellInfo for the cell that is currently being dragged |
| */ |
| private CellLayout.CellInfo mDragInfo; |
| |
| /** |
| * Target drop area calculated during last acceptDrop call. |
| */ |
| private int[] mTargetCell = null; |
| |
| private float mLastMotionX; |
| private float mLastMotionY; |
| |
| private final static int TOUCH_STATE_REST = 0; |
| private final static int TOUCH_STATE_SCROLLING = 1; |
| |
| private int mTouchState = TOUCH_STATE_REST; |
| |
| private OnLongClickListener mLongClickListener; |
| |
| private Launcher mLauncher; |
| private DragController mDragController; |
| |
| /** |
| * Cache of vacant cells, used during drag events and invalidated as needed. |
| */ |
| private CellLayout.CellInfo mVacantCache = null; |
| |
| private int[] mTempCell = new int[2]; |
| private int[] mTempEstimate = new int[2]; |
| |
| private boolean mAllowLongPress = true; |
| |
| private int mTouchSlop; |
| private int mMaximumVelocity; |
| |
| final Rect mDrawerBounds = new Rect(); |
| final Rect mClipBounds = new Rect(); |
| int mDrawerContentHeight; |
| int mDrawerContentWidth; |
| |
| /** |
| * Used to inflate the Workspace from XML. |
| * |
| * @param context The application's context. |
| * @param attrs The attribtues set containing the Workspace's customization values. |
| */ |
| public Workspace(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| /** |
| * Used to inflate the Workspace from XML. |
| * |
| * @param context The application's context. |
| * @param attrs The attribtues set containing the Workspace's customization values. |
| * @param defStyle Unused. |
| */ |
| public Workspace(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| |
| mWallpaperManager = WallpaperManager.getInstance(context); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.Workspace, defStyle, 0); |
| mDefaultScreen = a.getInt(R.styleable.Workspace_defaultScreen, 1); |
| a.recycle(); |
| |
| initWorkspace(); |
| } |
| |
| /** |
| * Initializes various states for this workspace. |
| */ |
| private void initWorkspace() { |
| mScroller = new Scroller(getContext()); |
| mCurrentScreen = mDefaultScreen; |
| Launcher.setScreen(mCurrentScreen); |
| |
| final ViewConfiguration configuration = ViewConfiguration.get(getContext()); |
| mTouchSlop = configuration.getScaledTouchSlop(); |
| mMaximumVelocity = configuration.getScaledMaximumFlingVelocity(); |
| } |
| |
| @Override |
| public void addView(View child, int index, LayoutParams params) { |
| if (!(child instanceof CellLayout)) { |
| throw new IllegalArgumentException("A Workspace can only have CellLayout children."); |
| } |
| super.addView(child, index, params); |
| } |
| |
| @Override |
| public void addView(View child) { |
| if (!(child instanceof CellLayout)) { |
| throw new IllegalArgumentException("A Workspace can only have CellLayout children."); |
| } |
| super.addView(child); |
| } |
| |
| @Override |
| public void addView(View child, int index) { |
| if (!(child instanceof CellLayout)) { |
| throw new IllegalArgumentException("A Workspace can only have CellLayout children."); |
| } |
| super.addView(child, index); |
| } |
| |
| @Override |
| public void addView(View child, int width, int height) { |
| if (!(child instanceof CellLayout)) { |
| throw new IllegalArgumentException("A Workspace can only have CellLayout children."); |
| } |
| super.addView(child, width, height); |
| } |
| |
| @Override |
| public void addView(View child, LayoutParams params) { |
| if (!(child instanceof CellLayout)) { |
| throw new IllegalArgumentException("A Workspace can only have CellLayout children."); |
| } |
| super.addView(child, params); |
| } |
| |
| /** |
| * @return The open folder on the current screen, or null if there is none |
| */ |
| Folder getOpenFolder() { |
| CellLayout currentScreen = (CellLayout) getChildAt(mCurrentScreen); |
| int count = currentScreen.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| View child = currentScreen.getChildAt(i); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); |
| if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { |
| return (Folder) child; |
| } |
| } |
| return null; |
| } |
| |
| ArrayList<Folder> getOpenFolders() { |
| final int screens = getChildCount(); |
| ArrayList<Folder> folders = new ArrayList<Folder>(screens); |
| |
| for (int screen = 0; screen < screens; screen++) { |
| CellLayout currentScreen = (CellLayout) getChildAt(screen); |
| int count = currentScreen.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| View child = currentScreen.getChildAt(i); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); |
| if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { |
| folders.add((Folder) child); |
| break; |
| } |
| } |
| } |
| |
| return folders; |
| } |
| |
| boolean isDefaultScreenShowing() { |
| return mCurrentScreen == mDefaultScreen; |
| } |
| |
| /** |
| * Returns the index of the currently displayed screen. |
| * |
| * @return The index of the currently displayed screen. |
| */ |
| int getCurrentScreen() { |
| return mCurrentScreen; |
| } |
| |
| /** |
| * Returns how many screens there are. |
| */ |
| int getScreenCount() { |
| return getChildCount(); |
| } |
| |
| /** |
| * Computes a bounding rectangle for a range of cells |
| * |
| * @param cellX X coordinate of upper left corner expressed as a cell position |
| * @param cellY Y coordinate of upper left corner expressed as a cell position |
| * @param cellHSpan Width in cells |
| * @param cellVSpan Height in cells |
| * @param rect Rectnagle into which to put the results |
| */ |
| public void cellToRect(int cellX, int cellY, int cellHSpan, int cellVSpan, RectF rect) { |
| ((CellLayout)getChildAt(mCurrentScreen)).cellToRect(cellX, cellY, |
| cellHSpan, cellVSpan, rect); |
| } |
| |
| /** |
| * Sets the current screen. |
| * |
| * @param currentScreen |
| */ |
| void setCurrentScreen(int currentScreen) { |
| clearVacantCache(); |
| mCurrentScreen = Math.max(0, Math.min(currentScreen, getChildCount() - 1)); |
| scrollTo(mCurrentScreen * getWidth(), 0); |
| invalidate(); |
| } |
| |
| /** |
| * Adds the specified child in the current screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param x The X position of the child in the screen's grid. |
| * @param y The Y position of the child in the screen's grid. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| */ |
| void addInCurrentScreen(View child, int x, int y, int spanX, int spanY) { |
| addInScreen(child, mCurrentScreen, x, y, spanX, spanY, false); |
| } |
| |
| /** |
| * Adds the specified child in the current screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param x The X position of the child in the screen's grid. |
| * @param y The Y position of the child in the screen's grid. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| * @param insert When true, the child is inserted at the beginning of the children list. |
| */ |
| void addInCurrentScreen(View child, int x, int y, int spanX, int spanY, boolean insert) { |
| addInScreen(child, mCurrentScreen, x, y, spanX, spanY, insert); |
| } |
| |
| /** |
| * Adds the specified child in the specified screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param screen The screen in which to add the child. |
| * @param x The X position of the child in the screen's grid. |
| * @param y The Y position of the child in the screen's grid. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| */ |
| void addInScreen(View child, int screen, int x, int y, int spanX, int spanY) { |
| addInScreen(child, screen, x, y, spanX, spanY, false); |
| } |
| |
| /** |
| * Adds the specified child in the specified screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param screen The screen in which to add the child. |
| * @param x The X position of the child in the screen's grid. |
| * @param y The Y position of the child in the screen's grid. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| * @param insert When true, the child is inserted at the beginning of the children list. |
| */ |
| void addInScreen(View child, int screen, int x, int y, int spanX, int spanY, boolean insert) { |
| if (screen < 0 || screen >= getChildCount()) { |
| throw new IllegalStateException("The screen must be >= 0 and < " + getChildCount()); |
| } |
| |
| clearVacantCache(); |
| |
| final CellLayout group = (CellLayout) getChildAt(screen); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); |
| if (lp == null) { |
| lp = new CellLayout.LayoutParams(x, y, spanX, spanY); |
| } else { |
| lp.cellX = x; |
| lp.cellY = y; |
| lp.cellHSpan = spanX; |
| lp.cellVSpan = spanY; |
| } |
| group.addView(child, insert ? 0 : -1, lp); |
| if (!(child instanceof Folder)) { |
| child.setOnLongClickListener(mLongClickListener); |
| } |
| if (child instanceof DropTarget) { |
| mDragController.addDropTarget((DropTarget)child); |
| } |
| } |
| |
| void addWidget(View view, Widget widget) { |
| addInScreen(view, widget.screen, widget.cellX, widget.cellY, widget.spanX, |
| widget.spanY, false); |
| } |
| |
| void addWidget(View view, Widget widget, boolean insert) { |
| addInScreen(view, widget.screen, widget.cellX, widget.cellY, widget.spanX, |
| widget.spanY, insert); |
| } |
| |
| CellLayout.CellInfo findAllVacantCells(boolean[] occupied) { |
| CellLayout group = (CellLayout) getChildAt(mCurrentScreen); |
| if (group != null) { |
| return group.findAllVacantCells(occupied, null); |
| } |
| return null; |
| } |
| |
| private void clearVacantCache() { |
| if (mVacantCache != null) { |
| mVacantCache.clearVacantCells(); |
| mVacantCache = null; |
| } |
| } |
| |
| /** |
| * Returns the coordinate of a vacant cell for the current screen. |
| */ |
| boolean getVacantCell(int[] vacant, int spanX, int spanY) { |
| CellLayout group = (CellLayout) getChildAt(mCurrentScreen); |
| if (group != null) { |
| return group.getVacantCell(vacant, spanX, spanY); |
| } |
| return false; |
| } |
| |
| /** |
| * Adds the specified child in the current screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| */ |
| void fitInCurrentScreen(View child, int spanX, int spanY) { |
| fitInScreen(child, mCurrentScreen, spanX, spanY); |
| } |
| |
| /** |
| * Adds the specified child in the specified screen. The position and dimension of |
| * the child are defined by x, y, spanX and spanY. |
| * |
| * @param child The child to add in one of the workspace's screens. |
| * @param screen The screen in which to add the child. |
| * @param spanX The number of cells spanned horizontally by the child. |
| * @param spanY The number of cells spanned vertically by the child. |
| */ |
| void fitInScreen(View child, int screen, int spanX, int spanY) { |
| if (screen < 0 || screen >= getChildCount()) { |
| throw new IllegalStateException("The screen must be >= 0 and < " + getChildCount()); |
| } |
| |
| final CellLayout group = (CellLayout) getChildAt(screen); |
| boolean vacant = group.getVacantCell(mTempCell, spanX, spanY); |
| if (vacant) { |
| group.addView(child, |
| new CellLayout.LayoutParams(mTempCell[0], mTempCell[1], spanX, spanY)); |
| child.setOnLongClickListener(mLongClickListener); |
| if (!(child instanceof Folder)) { |
| child.setOnLongClickListener(mLongClickListener); |
| } |
| if (child instanceof DropTarget) { |
| mDragController.addDropTarget((DropTarget)child); |
| } |
| } |
| } |
| |
| /** |
| * Registers the specified listener on each screen contained in this workspace. |
| * |
| * @param l The listener used to respond to long clicks. |
| */ |
| @Override |
| public void setOnLongClickListener(OnLongClickListener l) { |
| mLongClickListener = l; |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| getChildAt(i).setOnLongClickListener(l); |
| } |
| } |
| |
| private void updateWallpaperOffset() { |
| updateWallpaperOffset(getChildAt(getChildCount() - 1).getRight() - (mRight - mLeft)); |
| } |
| |
| private void updateWallpaperOffset(int scrollRange) { |
| mWallpaperManager.setWallpaperOffsets(getWindowToken(), mScrollX / (float) scrollRange, 0); |
| } |
| |
| @Override |
| public void computeScroll() { |
| if (mScroller.computeScrollOffset()) { |
| mScrollX = mScroller.getCurrX(); |
| mScrollY = mScroller.getCurrY(); |
| updateWallpaperOffset(); |
| postInvalidate(); |
| } else if (mNextScreen != INVALID_SCREEN) { |
| mCurrentScreen = Math.max(0, Math.min(mNextScreen, getChildCount() - 1)); |
| Launcher.setScreen(mCurrentScreen); |
| mNextScreen = INVALID_SCREEN; |
| clearChildrenCache(); |
| } |
| } |
| |
| @Override |
| protected void dispatchDraw(Canvas canvas) { |
| boolean restore = false; |
| int restoreCount = 0; |
| |
| // For the fade. If view gets setAlpha(), use that instead. |
| float scale = mScale; |
| if (scale < 0.999f) { |
| int sx = mScrollX; |
| |
| int alpha = (scale < 0.5f) ? (int)(255 * 2 * scale) : 255; |
| |
| restoreCount = canvas.saveLayerAlpha(sx, 0, sx+getWidth(), getHeight(), alpha, |
| Canvas.HAS_ALPHA_LAYER_SAVE_FLAG | Canvas.CLIP_TO_LAYER_SAVE_FLAG); |
| restore = true; |
| |
| if (scale < 0.999f) { |
| int w = getWidth(); |
| w += 2 * mCurrentScreen * w; |
| int dx = w/2; |
| int h = getHeight(); |
| int dy = (h/2) - (h/4); |
| canvas.translate(dx, dy); |
| canvas.scale(scale, scale); |
| canvas.translate(-dx, -dy); |
| } |
| } |
| |
| // ViewGroup.dispatchDraw() supports many features we don't need: |
| // clip to padding, layout animation, animation listener, disappearing |
| // children, etc. The following implementation attempts to fast-track |
| // the drawing dispatch by drawing only what we know needs to be drawn. |
| |
| boolean fastDraw = mTouchState != TOUCH_STATE_SCROLLING && mNextScreen == INVALID_SCREEN |
| && scale > 0.999f; |
| // If we are not scrolling or flinging, draw only the current screen |
| if (fastDraw) { |
| drawChild(canvas, getChildAt(mCurrentScreen), getDrawingTime()); |
| } else { |
| final long drawingTime = getDrawingTime(); |
| // If we are flinging, draw only the current screen and the target screen |
| if (mNextScreen >= 0 && mNextScreen < getChildCount() && |
| Math.abs(mCurrentScreen - mNextScreen) == 1) { |
| drawChild(canvas, getChildAt(mCurrentScreen), drawingTime); |
| drawChild(canvas, getChildAt(mNextScreen), drawingTime); |
| } else { |
| // If we are scrolling, draw all of our children |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| drawChild(canvas, getChildAt(i), drawingTime); |
| } |
| } |
| } |
| |
| if (restore) { |
| canvas.restoreToCount(restoreCount); |
| } |
| } |
| |
| private float mScale = 1.0f; |
| public void setScale(float scale) { |
| mScale = scale; |
| invalidate(); |
| } |
| |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| mDragController.setWindowToken(getWindowToken()); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| |
| final int width = MeasureSpec.getSize(widthMeasureSpec); |
| final int widthMode = MeasureSpec.getMode(widthMeasureSpec); |
| if (widthMode != MeasureSpec.EXACTLY) { |
| throw new IllegalStateException("Workspace can only be used in EXACTLY mode."); |
| } |
| |
| final int heightMode = MeasureSpec.getMode(heightMeasureSpec); |
| if (heightMode != MeasureSpec.EXACTLY) { |
| throw new IllegalStateException("Workspace can only be used in EXACTLY mode."); |
| } |
| |
| // The children are given the same width and height as the workspace |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec); |
| } |
| |
| if (mFirstLayout) { |
| scrollTo(mCurrentScreen * width, 0); |
| updateWallpaperOffset(width * (getChildCount() - 1)); |
| mFirstLayout = false; |
| } |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| int childLeft = 0; |
| |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE) { |
| final int childWidth = child.getMeasuredWidth(); |
| child.layout(childLeft, 0, childLeft + childWidth, child.getMeasuredHeight()); |
| childLeft += childWidth; |
| } |
| } |
| } |
| |
| @Override |
| public boolean requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate) { |
| int screen = indexOfChild(child); |
| if (screen != mCurrentScreen || !mScroller.isFinished()) { |
| if (!mLauncher.isWorkspaceLocked()) { |
| snapToScreen(screen); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) { |
| if (!mLauncher.isAllAppsVisible()) { |
| final Folder openFolder = getOpenFolder(); |
| if (openFolder != null) { |
| return openFolder.requestFocus(direction, previouslyFocusedRect); |
| } else { |
| int focusableScreen; |
| if (mNextScreen != INVALID_SCREEN) { |
| focusableScreen = mNextScreen; |
| } else { |
| focusableScreen = mCurrentScreen; |
| } |
| getChildAt(focusableScreen).requestFocus(direction, previouslyFocusedRect); |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean dispatchUnhandledMove(View focused, int direction) { |
| if (direction == View.FOCUS_LEFT) { |
| if (getCurrentScreen() > 0) { |
| snapToScreen(getCurrentScreen() - 1); |
| return true; |
| } |
| } else if (direction == View.FOCUS_RIGHT) { |
| if (getCurrentScreen() < getChildCount() - 1) { |
| snapToScreen(getCurrentScreen() + 1); |
| return true; |
| } |
| } |
| return super.dispatchUnhandledMove(focused, direction); |
| } |
| |
| @Override |
| public void addFocusables(ArrayList<View> views, int direction, int focusableMode) { |
| if (!mLauncher.isAllAppsVisible()) { |
| final Folder openFolder = getOpenFolder(); |
| if (openFolder == null) { |
| getChildAt(mCurrentScreen).addFocusables(views, direction); |
| if (direction == View.FOCUS_LEFT) { |
| if (mCurrentScreen > 0) { |
| getChildAt(mCurrentScreen - 1).addFocusables(views, direction); |
| } |
| } else if (direction == View.FOCUS_RIGHT){ |
| if (mCurrentScreen < getChildCount() - 1) { |
| getChildAt(mCurrentScreen + 1).addFocusables(views, direction); |
| } |
| } |
| } else { |
| openFolder.addFocusables(views, direction); |
| } |
| } |
| } |
| |
| @Override |
| public boolean dispatchTouchEvent(MotionEvent ev) { |
| if (ev.getAction() == MotionEvent.ACTION_DOWN) { |
| if (mLauncher.isWorkspaceLocked() || mLauncher.isAllAppsVisible()) { |
| return false; |
| } |
| } |
| return super.dispatchTouchEvent(ev); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| if (mLauncher.isWorkspaceLocked() || mLauncher.isAllAppsVisible()) { |
| return false; // We don't want the events. Let them fall through to the all apps view. |
| } |
| |
| /* |
| * This method JUST determines whether we want to intercept the motion. |
| * If we return true, onTouchEvent will be called and we do the actual |
| * scrolling there. |
| */ |
| |
| /* |
| * Shortcut the most recurring case: the user is in the dragging |
| * state and he is moving his finger. We want to intercept this |
| * motion. |
| */ |
| final int action = ev.getAction(); |
| if ((action == MotionEvent.ACTION_MOVE) && (mTouchState != TOUCH_STATE_REST)) { |
| return true; |
| } |
| |
| final float x = ev.getX(); |
| final float y = ev.getY(); |
| |
| switch (action) { |
| case MotionEvent.ACTION_MOVE: |
| /* |
| * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check |
| * whether the user has moved far enough from his original down touch. |
| */ |
| |
| /* |
| * Locally do absolute value. mLastMotionX is set to the y value |
| * of the down event. |
| */ |
| final int xDiff = (int) Math.abs(x - mLastMotionX); |
| final int yDiff = (int) Math.abs(y - mLastMotionY); |
| |
| final int touchSlop = mTouchSlop; |
| boolean xMoved = xDiff > touchSlop; |
| boolean yMoved = yDiff > touchSlop; |
| |
| if (xMoved || yMoved) { |
| |
| if (xMoved) { |
| // Scroll if the user moved far enough along the X axis |
| mTouchState = TOUCH_STATE_SCROLLING; |
| enableChildrenCache(); |
| } |
| // Either way, cancel any pending longpress |
| if (mAllowLongPress) { |
| mAllowLongPress = false; |
| // Try canceling the long press. It could also have been scheduled |
| // by a distant descendant, so use the mAllowLongPress flag to block |
| // everything |
| final View currentScreen = getChildAt(mCurrentScreen); |
| currentScreen.cancelLongPress(); |
| } |
| } |
| break; |
| |
| case MotionEvent.ACTION_DOWN: |
| // Remember location of down touch |
| mLastMotionX = x; |
| mLastMotionY = y; |
| mAllowLongPress = true; |
| |
| /* |
| * If being flinged and user touches the screen, initiate drag; |
| * otherwise don't. mScroller.isFinished should be false when |
| * being flinged. |
| */ |
| mTouchState = mScroller.isFinished() ? TOUCH_STATE_REST : TOUCH_STATE_SCROLLING; |
| break; |
| |
| case MotionEvent.ACTION_CANCEL: |
| case MotionEvent.ACTION_UP: |
| // Release the drag |
| clearChildrenCache(); |
| mTouchState = TOUCH_STATE_REST; |
| mAllowLongPress = false; |
| break; |
| } |
| |
| /* |
| * The only time we want to intercept motion events is if we are in the |
| * drag mode. |
| */ |
| return mTouchState != TOUCH_STATE_REST; |
| } |
| |
| void enableChildrenCache() { |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final CellLayout layout = (CellLayout) getChildAt(i); |
| layout.setChildrenDrawnWithCacheEnabled(true); |
| layout.setChildrenDrawingCacheEnabled(true); |
| } |
| } |
| |
| void clearChildrenCache() { |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final CellLayout layout = (CellLayout) getChildAt(i); |
| layout.setChildrenDrawnWithCacheEnabled(false); |
| } |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| |
| if (mLauncher.isWorkspaceLocked()) { |
| return false; // We don't want the events. Let them fall through to the all apps view. |
| } |
| if (mLauncher.isAllAppsVisible()) { |
| // Cancel any scrolling that is in progress. |
| if (!mScroller.isFinished()) { |
| mScroller.abortAnimation(); |
| } |
| snapToScreen(mCurrentScreen); |
| return false; // We don't want the events. Let them fall through to the all apps view. |
| } |
| |
| if (mVelocityTracker == null) { |
| mVelocityTracker = VelocityTracker.obtain(); |
| } |
| mVelocityTracker.addMovement(ev); |
| |
| final int action = ev.getAction(); |
| final float x = ev.getX(); |
| |
| switch (action) { |
| case MotionEvent.ACTION_DOWN: |
| /* |
| * If being flinged and user touches, stop the fling. isFinished |
| * will be false if being flinged. |
| */ |
| if (!mScroller.isFinished()) { |
| mScroller.abortAnimation(); |
| } |
| |
| // Remember where the motion event started |
| mLastMotionX = x; |
| break; |
| case MotionEvent.ACTION_MOVE: |
| if (mTouchState == TOUCH_STATE_SCROLLING) { |
| // Scroll to follow the motion event |
| final int deltaX = (int) (mLastMotionX - x); |
| mLastMotionX = x; |
| |
| if (deltaX < 0) { |
| if (mScrollX > 0) { |
| scrollBy(Math.max(-mScrollX, deltaX), 0); |
| updateWallpaperOffset(); |
| } |
| } else if (deltaX > 0) { |
| final int availableToScroll = getChildAt(getChildCount() - 1).getRight() - |
| mScrollX - getWidth(); |
| if (availableToScroll > 0) { |
| scrollBy(Math.min(availableToScroll, deltaX), 0); |
| updateWallpaperOffset(); |
| } |
| } |
| } |
| break; |
| case MotionEvent.ACTION_UP: |
| if (mTouchState == TOUCH_STATE_SCROLLING) { |
| final VelocityTracker velocityTracker = mVelocityTracker; |
| velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); |
| int velocityX = (int) velocityTracker.getXVelocity(); |
| |
| if (velocityX > SNAP_VELOCITY && mCurrentScreen > 0) { |
| // Fling hard enough to move left |
| snapToScreen(mCurrentScreen - 1); |
| } else if (velocityX < -SNAP_VELOCITY && mCurrentScreen < getChildCount() - 1) { |
| // Fling hard enough to move right |
| snapToScreen(mCurrentScreen + 1); |
| } else { |
| snapToDestination(); |
| } |
| |
| if (mVelocityTracker != null) { |
| mVelocityTracker.recycle(); |
| mVelocityTracker = null; |
| } |
| } |
| mTouchState = TOUCH_STATE_REST; |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| mTouchState = TOUCH_STATE_REST; |
| } |
| |
| return true; |
| } |
| |
| private void snapToDestination() { |
| final int screenWidth = getWidth(); |
| final int whichScreen = (mScrollX + (screenWidth / 2)) / screenWidth; |
| |
| snapToScreen(whichScreen); |
| } |
| |
| void snapToScreen(int whichScreen) { |
| if (!mScroller.isFinished()) return; |
| |
| clearVacantCache(); |
| enableChildrenCache(); |
| |
| whichScreen = Math.max(0, Math.min(whichScreen, getChildCount() - 1)); |
| boolean changingScreens = whichScreen != mCurrentScreen; |
| |
| mNextScreen = whichScreen; |
| |
| View focusedChild = getFocusedChild(); |
| if (focusedChild != null && changingScreens && focusedChild == getChildAt(mCurrentScreen)) { |
| focusedChild.clearFocus(); |
| } |
| |
| final int newX = whichScreen * getWidth(); |
| final int delta = newX - mScrollX; |
| mScroller.startScroll(mScrollX, 0, delta, 0, Math.abs(delta) * 2); |
| invalidate(); |
| } |
| |
| void startDrag(CellLayout.CellInfo cellInfo) { |
| View child = cellInfo.cell; |
| |
| // Make sure the drag was started by a long press as opposed to a long click. |
| // Note that Search takes focus when clicked rather than entering touch mode |
| if (!child.isInTouchMode() && !(child instanceof Search)) { |
| return; |
| } |
| |
| mDragInfo = cellInfo; |
| mDragInfo.screen = mCurrentScreen; |
| |
| CellLayout current = ((CellLayout) getChildAt(mCurrentScreen)); |
| |
| current.onDragChild(child); |
| mDragController.startDrag(child, this, child.getTag(), DragController.DRAG_ACTION_MOVE); |
| invalidate(); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| final SavedState state = new SavedState(super.onSaveInstanceState()); |
| state.currentScreen = mCurrentScreen; |
| return state; |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Parcelable state) { |
| SavedState savedState = (SavedState) state; |
| super.onRestoreInstanceState(savedState.getSuperState()); |
| if (savedState.currentScreen != -1) { |
| mCurrentScreen = savedState.currentScreen; |
| Launcher.setScreen(mCurrentScreen); |
| } |
| } |
| |
| void addApplicationShortcut(ApplicationInfo info, CellLayout.CellInfo cellInfo) { |
| addApplicationShortcut(info, cellInfo, false); |
| } |
| |
| void addApplicationShortcut(ApplicationInfo info, CellLayout.CellInfo cellInfo, |
| boolean insertAtFirst) { |
| final CellLayout layout = (CellLayout) getChildAt(cellInfo.screen); |
| final int[] result = new int[2]; |
| |
| layout.cellToPoint(cellInfo.cellX, cellInfo.cellY, result); |
| onDropExternal(result[0], result[1], info, layout, insertAtFirst); |
| } |
| |
| public void onDrop(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| final CellLayout cellLayout = getCurrentDropLayout(); |
| if (source != this) { |
| onDropExternal(x - xOffset, y - yOffset, dragInfo, cellLayout); |
| } else { |
| // Move internally |
| if (mDragInfo != null) { |
| final View cell = mDragInfo.cell; |
| int index = mScroller.isFinished() ? mCurrentScreen : mNextScreen; |
| if (index != mDragInfo.screen) { |
| final CellLayout originalCellLayout = (CellLayout) getChildAt(mDragInfo.screen); |
| originalCellLayout.removeView(cell); |
| cellLayout.addView(cell); |
| } |
| mTargetCell = estimateDropCell(x - xOffset, y - yOffset, |
| mDragInfo.spanX, mDragInfo.spanY, cell, cellLayout, mTargetCell); |
| cellLayout.onDropChild(cell, mTargetCell); |
| |
| final ItemInfo info = (ItemInfo)cell.getTag(); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams(); |
| LauncherModel.moveItemInDatabase(mLauncher, info, |
| LauncherSettings.Favorites.CONTAINER_DESKTOP, index, lp.cellX, lp.cellY); |
| } |
| } |
| } |
| |
| public void onDragEnter(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| clearVacantCache(); |
| } |
| |
| public void onDragOver(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| } |
| |
| public void onDragExit(DragSource source, int x, int y, int xOffset, int yOffset, |
| DragView dragView, Object dragInfo) { |
| clearVacantCache(); |
| } |
| |
| private void onDropExternal(int x, int y, Object dragInfo, CellLayout cellLayout) { |
| onDropExternal(x, y, dragInfo, cellLayout, false); |
| } |
| |
| private void onDropExternal(int x, int y, Object dragInfo, CellLayout cellLayout, |
| boolean insertAtFirst) { |
| // Drag from somewhere else |
| ItemInfo info = (ItemInfo) dragInfo; |
| |
| View view; |
| |
| switch (info.itemType) { |
| case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION: |
| case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT: |
| if (info.container == NO_ID) { |
| // Came from all apps -- make a copy |
| info = new ApplicationInfo((ApplicationInfo) info); |
| } |
| view = mLauncher.createShortcut(R.layout.application, cellLayout, |
| (ApplicationInfo) info); |
| break; |
| case LauncherSettings.Favorites.ITEM_TYPE_USER_FOLDER: |
| view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, |
| (ViewGroup) getChildAt(mCurrentScreen), ((UserFolderInfo) info)); |
| break; |
| default: |
| throw new IllegalStateException("Unknown item type: " + info.itemType); |
| } |
| |
| cellLayout.addView(view, insertAtFirst ? 0 : -1); |
| view.setOnLongClickListener(mLongClickListener); |
| if (view instanceof DropTarget) { |
| mDragController.addDropTarget((DropTarget) view); |
| } |
| |
| mTargetCell = estimateDropCell(x, y, 1, 1, view, cellLayout, mTargetCell); |
| cellLayout.onDropChild(view, mTargetCell); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) view.getLayoutParams(); |
| |
| LauncherModel.addOrMoveItemInDatabase(mLauncher, info, |
| LauncherSettings.Favorites.CONTAINER_DESKTOP, mCurrentScreen, lp.cellX, lp.cellY); |
| } |
| |
| /** |
| * Return the current {@link CellLayout}, correctly picking the destination |
| * screen while a scroll is in progress. |
| */ |
| private CellLayout getCurrentDropLayout() { |
| int index = mScroller.isFinished() ? mCurrentScreen : mNextScreen; |
| return (CellLayout) getChildAt(index); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean acceptDrop(DragSource source, int x, int y, |
| int xOffset, int yOffset, DragView dragView, Object dragInfo) { |
| final CellLayout layout = getCurrentDropLayout(); |
| final CellLayout.CellInfo cellInfo = mDragInfo; |
| final int spanX = cellInfo == null ? 1 : cellInfo.spanX; |
| final int spanY = cellInfo == null ? 1 : cellInfo.spanY; |
| |
| if (mVacantCache == null) { |
| final View ignoreView = cellInfo == null ? null : cellInfo.cell; |
| mVacantCache = layout.findAllVacantCells(null, ignoreView); |
| } |
| |
| return mVacantCache.findCellForSpan(mTempEstimate, spanX, spanY, false); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public Rect estimateDropLocation(DragSource source, int x, int y, |
| int xOffset, int yOffset, DragView dragView, Object dragInfo, Rect recycle) { |
| final CellLayout layout = getCurrentDropLayout(); |
| |
| final CellLayout.CellInfo cellInfo = mDragInfo; |
| final int spanX = cellInfo == null ? 1 : cellInfo.spanX; |
| final int spanY = cellInfo == null ? 1 : cellInfo.spanY; |
| final View ignoreView = cellInfo == null ? null : cellInfo.cell; |
| |
| final Rect location = recycle != null ? recycle : new Rect(); |
| |
| // Find drop cell and convert into rectangle |
| int[] dropCell = estimateDropCell(x - xOffset, y - yOffset, |
| spanX, spanY, ignoreView, layout, mTempCell); |
| |
| if (dropCell == null) { |
| return null; |
| } |
| |
| layout.cellToPoint(dropCell[0], dropCell[1], mTempEstimate); |
| location.left = mTempEstimate[0]; |
| location.top = mTempEstimate[1]; |
| |
| layout.cellToPoint(dropCell[0] + spanX, dropCell[1] + spanY, mTempEstimate); |
| location.right = mTempEstimate[0]; |
| location.bottom = mTempEstimate[1]; |
| |
| return location; |
| } |
| |
| /** |
| * Calculate the nearest cell where the given object would be dropped. |
| */ |
| private int[] estimateDropCell(int pixelX, int pixelY, |
| int spanX, int spanY, View ignoreView, CellLayout layout, int[] recycle) { |
| // Create vacant cell cache if none exists |
| if (mVacantCache == null) { |
| mVacantCache = layout.findAllVacantCells(null, ignoreView); |
| } |
| |
| // Find the best target drop location |
| return layout.findNearestVacantArea(pixelX, pixelY, |
| spanX, spanY, mVacantCache, recycle); |
| } |
| |
| void setLauncher(Launcher launcher) { |
| mLauncher = launcher; |
| } |
| |
| public void setDragController(DragController dragController) { |
| mDragController = dragController; |
| } |
| |
| public void onDropCompleted(View target, boolean success) { |
| clearVacantCache(); |
| |
| if (success){ |
| if (target != this && mDragInfo != null) { |
| final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); |
| cellLayout.removeView(mDragInfo.cell); |
| if (mDragInfo.cell instanceof DropTarget) { |
| mDragController.removeDropTarget((DropTarget)mDragInfo.cell); |
| } |
| //final Object tag = mDragInfo.cell.getTag(); |
| } |
| } else { |
| if (mDragInfo != null) { |
| final CellLayout cellLayout = (CellLayout) getChildAt(mDragInfo.screen); |
| cellLayout.onDropAborted(mDragInfo.cell); |
| } |
| } |
| |
| mDragInfo = null; |
| } |
| |
| public void scrollLeft() { |
| clearVacantCache(); |
| if (mNextScreen == INVALID_SCREEN && mCurrentScreen > 0 && mScroller.isFinished()) { |
| snapToScreen(mCurrentScreen - 1); |
| } |
| } |
| |
| public void scrollRight() { |
| clearVacantCache(); |
| if (mNextScreen == INVALID_SCREEN && mCurrentScreen < getChildCount() -1 && |
| mScroller.isFinished()) { |
| snapToScreen(mCurrentScreen + 1); |
| } |
| } |
| |
| public int getScreenForView(View v) { |
| int result = -1; |
| if (v != null) { |
| ViewParent vp = v.getParent(); |
| int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| if (vp == getChildAt(i)) { |
| return i; |
| } |
| } |
| } |
| return result; |
| } |
| |
| /** |
| * Find a search widget on the given screen |
| */ |
| private Search findSearchWidget(CellLayout screen) { |
| final int count = screen.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| View v = screen.getChildAt(i); |
| if (v instanceof Search) { |
| return (Search) v; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Gets the first search widget on the current screen, if there is one. |
| * Returns <code>null</code> otherwise. |
| */ |
| public Search findSearchWidgetOnCurrentScreen() { |
| CellLayout currentScreen = (CellLayout)getChildAt(mCurrentScreen); |
| return findSearchWidget(currentScreen); |
| } |
| |
| public Folder getFolderForTag(Object tag) { |
| int screenCount = getChildCount(); |
| for (int screen = 0; screen < screenCount; screen++) { |
| CellLayout currentScreen = ((CellLayout) getChildAt(screen)); |
| int count = currentScreen.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| View child = currentScreen.getChildAt(i); |
| CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams(); |
| if (lp.cellHSpan == 4 && lp.cellVSpan == 4 && child instanceof Folder) { |
| Folder f = (Folder) child; |
| if (f.getInfo() == tag) { |
| return f; |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| public View getViewForTag(Object tag) { |
| int screenCount = getChildCount(); |
| for (int screen = 0; screen < screenCount; screen++) { |
| CellLayout currentScreen = ((CellLayout) getChildAt(screen)); |
| int count = currentScreen.getChildCount(); |
| for (int i = 0; i < count; i++) { |
| View child = currentScreen.getChildAt(i); |
| if (child.getTag() == tag) { |
| return child; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @return True is long presses are still allowed for the current touch |
| */ |
| public boolean allowLongPress() { |
| return mAllowLongPress; |
| } |
| |
| /** |
| * Set true to allow long-press events to be triggered, usually checked by |
| * {@link Launcher} to accept or block dpad-initiated long-presses. |
| */ |
| public void setAllowLongPress(boolean allowLongPress) { |
| mAllowLongPress = allowLongPress; |
| } |
| |
| void removeShortcutsForPackage(String packageName) { |
| final ArrayList<View> childrenToRemove = new ArrayList<View>(); |
| final int count = getChildCount(); |
| |
| for (int i = 0; i < count; i++) { |
| final CellLayout layout = (CellLayout) getChildAt(i); |
| int childCount = layout.getChildCount(); |
| |
| childrenToRemove.clear(); |
| |
| for (int j = 0; j < childCount; j++) { |
| final View view = layout.getChildAt(j); |
| Object tag = view.getTag(); |
| |
| if (tag instanceof ApplicationInfo) { |
| final ApplicationInfo info = (ApplicationInfo) tag; |
| // We need to check for ACTION_MAIN otherwise getComponent() might |
| // return null for some shortcuts (for instance, for shortcuts to |
| // web pages.) |
| final Intent intent = info.intent; |
| final ComponentName name = intent.getComponent(); |
| |
| if (Intent.ACTION_MAIN.equals(intent.getAction()) && |
| name != null && packageName.equals(name.getPackageName())) { |
| LauncherModel.deleteItemFromDatabase(mLauncher, info); |
| childrenToRemove.add(view); |
| } |
| } else if (tag instanceof UserFolderInfo) { |
| final UserFolderInfo info = (UserFolderInfo) tag; |
| final ArrayList<ApplicationInfo> contents = info.contents; |
| final ArrayList<ApplicationInfo> toRemove = new ArrayList<ApplicationInfo>(1); |
| final int contentsCount = contents.size(); |
| boolean removedFromFolder = false; |
| |
| for (int k = 0; k < contentsCount; k++) { |
| final ApplicationInfo appInfo = contents.get(k); |
| final Intent intent = appInfo.intent; |
| final ComponentName name = intent.getComponent(); |
| |
| if (Intent.ACTION_MAIN.equals(intent.getAction()) && |
| name != null && packageName.equals(name.getPackageName())) { |
| toRemove.add(appInfo); |
| LauncherModel.deleteItemFromDatabase(mLauncher, appInfo); |
| removedFromFolder = true; |
| } |
| } |
| |
| contents.removeAll(toRemove); |
| if (removedFromFolder) { |
| final Folder folder = getOpenFolder(); |
| if (folder != null) folder.notifyDataSetChanged(); |
| } |
| } |
| } |
| |
| childCount = childrenToRemove.size(); |
| for (int j = 0; j < childCount; j++) { |
| View child = childrenToRemove.get(j); |
| layout.removeViewInLayout(child); |
| if (child instanceof DropTarget) { |
| mDragController.removeDropTarget((DropTarget)child); |
| } |
| } |
| |
| if (childCount > 0) { |
| layout.requestLayout(); |
| layout.invalidate(); |
| } |
| } |
| } |
| |
| void updateShortcutsForPackage(String packageName) { |
| final PackageManager pm = mLauncher.getPackageManager(); |
| |
| final int count = getChildCount(); |
| for (int i = 0; i < count; i++) { |
| final CellLayout layout = (CellLayout) getChildAt(i); |
| int childCount = layout.getChildCount(); |
| for (int j = 0; j < childCount; j++) { |
| final View view = layout.getChildAt(j); |
| Object tag = view.getTag(); |
| if (tag instanceof ApplicationInfo) { |
| ApplicationInfo info = (ApplicationInfo) tag; |
| // We need to check for ACTION_MAIN otherwise getComponent() might |
| // return null for some shortcuts (for instance, for shortcuts to |
| // web pages.) |
| final Intent intent = info.intent; |
| final ComponentName name = intent.getComponent(); |
| if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION && |
| Intent.ACTION_MAIN.equals(intent.getAction()) && name != null && |
| packageName.equals(name.getPackageName())) { |
| |
| final Drawable icon = AppInfoCache.getIconDrawable(pm, info); |
| if (icon != null && icon != info.icon) { |
| info.icon.setCallback(null); |
| info.icon = Utilities.createIconThumbnail(icon, mContext); |
| info.filtered = true; |
| ((TextView) view).setCompoundDrawablesWithIntrinsicBounds(null, |
| info.icon, null, null); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| void moveToDefaultScreen() { |
| snapToScreen(mDefaultScreen); |
| getChildAt(mDefaultScreen).requestFocus(); |
| } |
| |
| public static class SavedState extends BaseSavedState { |
| int currentScreen = -1; |
| |
| SavedState(Parcelable superState) { |
| super(superState); |
| } |
| |
| private SavedState(Parcel in) { |
| super(in); |
| currentScreen = in.readInt(); |
| } |
| |
| @Override |
| public void writeToParcel(Parcel out, int flags) { |
| super.writeToParcel(out, flags); |
| out.writeInt(currentScreen); |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR = |
| new Parcelable.Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| |
| void show() { |
| setVisibility(VISIBLE); |
| } |
| |
| void hide() { |
| } |
| } |
