Java tutorial
/* * 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.kogitune.launcher3; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.animation.ObjectAnimator; import android.animation.PropertyValuesHolder; import android.content.Context; import android.content.res.Resources; import android.graphics.PointF; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.os.SystemClock; import android.support.v4.widget.AutoScrollHelper; import android.text.InputType; import android.text.Selection; import android.text.Spannable; import android.util.AttributeSet; import android.util.Log; import android.view.ActionMode; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.accessibility.AccessibilityEvent; import android.view.accessibility.AccessibilityManager; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputMethodManager; import android.widget.LinearLayout; import android.widget.ScrollView; import android.widget.TextView; import com.kogitune.launcher3.FolderInfo.FolderListener; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; /** * Represents a set of icons chosen by the user or generated by the system. */ public class Folder extends LinearLayout implements DragSource, View.OnClickListener, View.OnLongClickListener, DropTarget, FolderListener, TextView.OnEditorActionListener, View.OnFocusChangeListener { private static final String TAG = "Launcher.Folder"; protected DragController mDragController; protected Launcher mLauncher; protected FolderInfo mInfo; static final int STATE_NONE = -1; static final int STATE_SMALL = 0; static final int STATE_ANIMATING = 1; static final int STATE_OPEN = 2; private int mExpandDuration; protected CellLayout mContent; private ScrollView mScrollView; private final LayoutInflater mInflater; private final IconCache mIconCache; private int mState = STATE_NONE; private static final int REORDER_ANIMATION_DURATION = 230; private static final int REORDER_DELAY = 250; private static final int ON_EXIT_CLOSE_DELAY = 800; private boolean mRearrangeOnClose = false; private FolderIcon mFolderIcon; private int mMaxCountX; private int mMaxCountY; private int mMaxNumItems; private ArrayList<View> mItemsInReadingOrder = new ArrayList<View>(); private Drawable mIconDrawable; boolean mItemsInvalidated = false; private ShortcutInfo mCurrentDragInfo; private View mCurrentDragView; boolean mSuppressOnAdd = false; private int[] mTargetCell = new int[2]; private int[] mPreviousTargetCell = new int[2]; private int[] mEmptyCell = new int[2]; private Alarm mReorderAlarm = new Alarm(); private Alarm mOnExitAlarm = new Alarm(); private int mFolderNameHeight; private Rect mTempRect = new Rect(); private boolean mDragInProgress = false; private boolean mDeleteFolderOnDropCompleted = false; private boolean mSuppressFolderDeletion = false; private boolean mItemAddedBackToSelfViaIcon = false; FolderEditText mFolderName; private float mFolderIconPivotX; private float mFolderIconPivotY; private boolean mIsEditingName = false; private InputMethodManager mInputMethodManager; private static String sDefaultFolderName; private static String sHintText; private int DRAG_MODE_NONE = 0; private int DRAG_MODE_REORDER = 1; private int mDragMode = DRAG_MODE_NONE; private boolean mDestroyed; private AutoScrollHelper mAutoScrollHelper; private Runnable mDeferredAction; private boolean mDeferDropAfterUninstall; private boolean mUninstallSuccessful; /** * 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 Folder(Context context, AttributeSet attrs) { super(context, attrs); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); setAlwaysDrawnWithCacheEnabled(false); mInflater = LayoutInflater.from(context); mIconCache = app.getIconCache(); Resources res = getResources(); mMaxCountX = (int) grid.numColumns; mMaxCountY = (int) grid.numRows; mMaxNumItems = mMaxCountX * mMaxCountY; mInputMethodManager = (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE); mExpandDuration = res.getInteger(R.integer.config_folderAnimDuration); if (sDefaultFolderName == null) { sDefaultFolderName = res.getString(R.string.folder_name); } if (sHintText == null) { sHintText = res.getString(R.string.folder_hint_text); } mLauncher = (Launcher) context; // We need this view to be focusable in touch mode so that when text editing of the folder // name is complete, we have something to focus on, thus hiding the cursor and giving // reliable behvior when clicking the text field (since it will always gain focus on click). setFocusableInTouchMode(true); } @Override protected void onFinishInflate() { super.onFinishInflate(); mScrollView = (ScrollView) findViewById(R.id.scroll_view); mContent = (CellLayout) findViewById(R.id.folder_content); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); mContent.setCellDimensions(grid.folderCellWidthPx, grid.folderCellHeightPx); mContent.setGridSize(0, 0); mContent.getShortcutsAndWidgets().setMotionEventSplittingEnabled(false); mContent.setInvertIfRtl(true); mFolderName = (FolderEditText) findViewById(R.id.folder_name); mFolderName.setFolder(this); mFolderName.setOnFocusChangeListener(this); // We find out how tall the text view wants to be (it is set to wrap_content), so that // we can allocate the appropriate amount of space for it. int measureSpec = MeasureSpec.UNSPECIFIED; mFolderName.measure(measureSpec, measureSpec); mFolderNameHeight = mFolderName.getMeasuredHeight(); // We disable action mode for now since it messes up the view on phones mFolderName.setCustomSelectionActionModeCallback(mActionModeCallback); mFolderName.setOnEditorActionListener(this); mFolderName.setSelectAllOnFocus(true); mFolderName.setInputType(mFolderName.getInputType() | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS | InputType.TYPE_TEXT_FLAG_CAP_WORDS); mAutoScrollHelper = new FolderAutoScrollHelper(mScrollView); } private ActionMode.Callback mActionModeCallback = new ActionMode.Callback() { public boolean onActionItemClicked(ActionMode mode, MenuItem item) { return false; } public boolean onCreateActionMode(ActionMode mode, Menu menu) { return false; } public void onDestroyActionMode(ActionMode mode) { } public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } }; public void onClick(View v) { Object tag = v.getTag(); if (tag instanceof ShortcutInfo) { mLauncher.onClick(v); } } public boolean onLongClick(View v) { // Return if global dragging is not enabled if (!mLauncher.isDraggingEnabled()) return true; Object tag = v.getTag(); if (tag instanceof ShortcutInfo) { ShortcutInfo item = (ShortcutInfo) tag; if (!v.isInTouchMode()) { return false; } mLauncher.dismissFolderCling(null); mLauncher.getWorkspace().onDragStartedWithItem(v); mLauncher.getWorkspace().beginDragShared(v, this); mIconDrawable = ((TextView) v).getCompoundDrawables()[1]; mCurrentDragInfo = item; mEmptyCell[0] = item.cellX; mEmptyCell[1] = item.cellY; mCurrentDragView = v; mContent.removeView(mCurrentDragView); mInfo.remove(mCurrentDragInfo); mDragInProgress = true; mItemAddedBackToSelfViaIcon = false; } return true; } public boolean isEditingName() { return mIsEditingName; } public void startEditingFolderName() { mFolderName.setHint(""); mIsEditingName = true; } public void dismissEditingName() { mInputMethodManager.hideSoftInputFromWindow(getWindowToken(), 0); doneEditingFolderName(true); } public void doneEditingFolderName(boolean commit) { mFolderName.setHint(sHintText); // Convert to a string here to ensure that no other state associated with the text field // gets saved. String newTitle = mFolderName.getText().toString(); mInfo.setTitle(newTitle); LauncherModel.updateItemInDatabase(mLauncher, mInfo); if (commit) { sendCustomAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, String.format(getContext().getString(R.string.folder_renamed), newTitle)); } // In order to clear the focus from the text field, we set the focus on ourself. This // ensures that every time the field is clicked, focus is gained, giving reliable behavior. requestFocus(); Selection.setSelection((Spannable) mFolderName.getText(), 0, 0); mIsEditingName = false; } public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { if (actionId == EditorInfo.IME_ACTION_DONE) { dismissEditingName(); return true; } return false; } public View getEditTextRegion() { return mFolderName; } public Drawable getDragDrawable() { return mIconDrawable; } /** * We need to handle touch events to prevent them from falling through to the workspace below. */ @Override public boolean onTouchEvent(MotionEvent ev) { return true; } public void setDragController(DragController dragController) { mDragController = dragController; } void setFolderIcon(FolderIcon icon) { mFolderIcon = icon; } @Override public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { // When the folder gets focus, we don't want to announce the list of items. return true; } /** * @return the FolderInfo object associated with this folder */ FolderInfo getInfo() { return mInfo; } private class GridComparator implements Comparator<ShortcutInfo> { int mNumCols; public GridComparator(int numCols) { mNumCols = numCols; } @Override public int compare(ShortcutInfo lhs, ShortcutInfo rhs) { int lhIndex = lhs.cellY * mNumCols + lhs.cellX; int rhIndex = rhs.cellY * mNumCols + rhs.cellX; return (lhIndex - rhIndex); } } private void placeInReadingOrder(ArrayList<ShortcutInfo> items) { int maxX = 0; int count = items.size(); for (int i = 0; i < count; i++) { ShortcutInfo item = items.get(i); if (item.cellX > maxX) { maxX = item.cellX; } } GridComparator gridComparator = new GridComparator(maxX + 1); Collections.sort(items, gridComparator); final int countX = mContent.getCountX(); for (int i = 0; i < count; i++) { int x = i % countX; int y = i / countX; ShortcutInfo item = items.get(i); item.cellX = x; item.cellY = y; } } void bind(FolderInfo info) { mInfo = info; ArrayList<ShortcutInfo> children = info.contents; ArrayList<ShortcutInfo> overflow = new ArrayList<ShortcutInfo>(); setupContentForNumItems(children.size()); placeInReadingOrder(children); int count = 0; for (int i = 0; i < children.size(); i++) { ShortcutInfo child = (ShortcutInfo) children.get(i); if (!createAndAddShortcut(child)) { overflow.add(child); } else { count++; } } // We rearrange the items in case there are any empty gaps setupContentForNumItems(count); // If our folder has too many items we prune them from the list. This is an issue // when upgrading from the old Folders implementation which could contain an unlimited // number of items. for (ShortcutInfo item : overflow) { mInfo.remove(item); LauncherModel.deleteItemFromDatabase(mLauncher, item); } mItemsInvalidated = true; updateTextViewFocus(); mInfo.addListener(this); if (!sDefaultFolderName.contentEquals(mInfo.title)) { mFolderName.setText(mInfo.title); } else { mFolderName.setText(""); } updateItemLocationsInDatabase(); } /** * Creates a new UserFolder, inflated from R.layout.user_folder. * * @param context The application's context. * * @return A new UserFolder. */ static Folder fromXml(Context context) { return (Folder) LayoutInflater.from(context).inflate(R.layout.user_folder, null); } /** * This method is intended to make the UserFolder to be visually identical in size and position * to its associated FolderIcon. This allows for a seamless transition into the expanded state. */ private void positionAndSizeAsIcon() { if (!(getParent() instanceof DragLayer)) return; setScaleX(0.8f); setScaleY(0.8f); setAlpha(0f); mState = STATE_SMALL; } public void animateOpen() { positionAndSizeAsIcon(); if (!(getParent() instanceof DragLayer)) return; centerAboutIcon(); PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 1); PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f); PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f); final ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(this, alpha, scaleX, scaleY); oa.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationStart(Animator animation) { sendCustomAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, String.format(getContext().getString(R.string.folder_opened), mContent.getCountX(), mContent.getCountY())); mState = STATE_ANIMATING; } @Override public void onAnimationEnd(Animator animation) { mState = STATE_OPEN; setLayerType(LAYER_TYPE_NONE, null); Cling cling = mLauncher.showFirstRunFoldersCling(); if (cling != null) { cling.bringScrimToFront(); bringToFront(); cling.bringToFront(); } setFocusOnFirstChild(); } }); oa.setDuration(mExpandDuration); setLayerType(LAYER_TYPE_HARDWARE, null); oa.start(); } private void sendCustomAccessibilityEvent(int type, String text) { AccessibilityManager accessibilityManager = (AccessibilityManager) getContext() .getSystemService(Context.ACCESSIBILITY_SERVICE); if (accessibilityManager.isEnabled()) { AccessibilityEvent event = AccessibilityEvent.obtain(type); onInitializeAccessibilityEvent(event); event.getText().add(text); accessibilityManager.sendAccessibilityEvent(event); } } private void setFocusOnFirstChild() { View firstChild = mContent.getChildAt(0, 0); if (firstChild != null) { firstChild.requestFocus(); } } public void animateClosed() { if (!(getParent() instanceof DragLayer)) return; PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0); PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 0.9f); PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 0.9f); final ObjectAnimator oa = LauncherAnimUtils.ofPropertyValuesHolder(this, alpha, scaleX, scaleY); oa.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { onCloseComplete(); setLayerType(LAYER_TYPE_NONE, null); mState = STATE_SMALL; } @Override public void onAnimationStart(Animator animation) { sendCustomAccessibilityEvent(AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, getContext().getString(R.string.folder_closed)); mState = STATE_ANIMATING; } }); oa.setDuration(mExpandDuration); setLayerType(LAYER_TYPE_HARDWARE, null); oa.start(); } public boolean acceptDrop(DragObject d) { final ItemInfo item = (ItemInfo) d.dragInfo; final int itemType = item.itemType; return ((itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION || itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) && !isFull()); } protected boolean findAndSetEmptyCells(ShortcutInfo item) { int[] emptyCell = new int[2]; if (mContent.findCellForSpan(emptyCell, item.spanX, item.spanY)) { item.cellX = emptyCell[0]; item.cellY = emptyCell[1]; return true; } else { return false; } } protected boolean createAndAddShortcut(ShortcutInfo item) { final BubbleTextView textView = (BubbleTextView) mInflater.inflate(R.layout.application, this, false); textView.setCompoundDrawables(null, Utilities.createIconDrawable(item.getIcon(mIconCache)), null, null); textView.setText(item.title); textView.setTag(item); textView.setTextColor(getResources().getColor(R.color.folder_items_text_color)); textView.setShadowsEnabled(false); textView.setOnClickListener(this); textView.setOnLongClickListener(this); // We need to check here to verify that the given item's location isn't already occupied // by another item. if (mContent.getChildAt(item.cellX, item.cellY) != null || item.cellX < 0 || item.cellY < 0 || item.cellX >= mContent.getCountX() || item.cellY >= mContent.getCountY()) { // This shouldn't happen, log it. Log.e(TAG, "Folder order not properly persisted during bind"); if (!findAndSetEmptyCells(item)) { return false; } } CellLayout.LayoutParams lp = new CellLayout.LayoutParams(item.cellX, item.cellY, item.spanX, item.spanY); boolean insert = false; textView.setOnKeyListener(new FolderKeyEventListener()); mContent.addViewToCellLayout(textView, insert ? 0 : -1, (int) item.id, lp, true); return true; } public void onDragEnter(DragObject d) { mPreviousTargetCell[0] = -1; mPreviousTargetCell[1] = -1; mOnExitAlarm.cancelAlarm(); } OnAlarmListener mReorderAlarmListener = new OnAlarmListener() { public void onAlarm(Alarm alarm) { realTimeReorder(mEmptyCell, mTargetCell); } }; boolean readingOrderGreaterThan(int[] v1, int[] v2) { if (v1[1] > v2[1] || (v1[1] == v2[1] && v1[0] > v2[0])) { return true; } else { return false; } } private void realTimeReorder(int[] empty, int[] target) { boolean wrap; int startX; int endX; int startY; int delay = 0; float delayAmount = 30; if (readingOrderGreaterThan(target, empty)) { wrap = empty[0] >= mContent.getCountX() - 1; startY = wrap ? empty[1] + 1 : empty[1]; for (int y = startY; y <= target[1]; y++) { startX = y == empty[1] ? empty[0] + 1 : 0; endX = y < target[1] ? mContent.getCountX() - 1 : target[0]; for (int x = startX; x <= endX; x++) { View v = mContent.getChildAt(x, y); if (mContent.animateChildToPosition(v, empty[0], empty[1], REORDER_ANIMATION_DURATION, delay, true, true)) { empty[0] = x; empty[1] = y; delay += delayAmount; delayAmount *= 0.9; } } } } else { wrap = empty[0] == 0; startY = wrap ? empty[1] - 1 : empty[1]; for (int y = startY; y >= target[1]; y--) { startX = y == empty[1] ? empty[0] - 1 : mContent.getCountX() - 1; endX = y > target[1] ? 0 : target[0]; for (int x = startX; x >= endX; x--) { View v = mContent.getChildAt(x, y); if (mContent.animateChildToPosition(v, empty[0], empty[1], REORDER_ANIMATION_DURATION, delay, true, true)) { empty[0] = x; empty[1] = y; delay += delayAmount; delayAmount *= 0.9; } } } } } public boolean isLayoutRtl() { return (getLayoutDirection() == LAYOUT_DIRECTION_RTL); } public void onDragOver(DragObject d) { final DragView dragView = d.dragView; final int scrollOffset = mScrollView.getScrollY(); final float[] r = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, dragView, null); r[0] -= getPaddingLeft(); r[1] -= getPaddingTop(); final long downTime = SystemClock.uptimeMillis(); final MotionEvent translatedEv = MotionEvent.obtain(downTime, downTime, MotionEvent.ACTION_MOVE, d.x, d.y, 0); if (!mAutoScrollHelper.isEnabled()) { mAutoScrollHelper.setEnabled(true); } final boolean handled = mAutoScrollHelper.onTouch(this, translatedEv); translatedEv.recycle(); if (handled) { mReorderAlarm.cancelAlarm(); } else { mTargetCell = mContent.findNearestArea((int) r[0], (int) r[1] + scrollOffset, 1, 1, mTargetCell); if (isLayoutRtl()) { mTargetCell[0] = mContent.getCountX() - mTargetCell[0] - 1; } if (mTargetCell[0] != mPreviousTargetCell[0] || mTargetCell[1] != mPreviousTargetCell[1]) { mReorderAlarm.cancelAlarm(); mReorderAlarm.setOnAlarmListener(mReorderAlarmListener); mReorderAlarm.setAlarm(REORDER_DELAY); mPreviousTargetCell[0] = mTargetCell[0]; mPreviousTargetCell[1] = mTargetCell[1]; mDragMode = DRAG_MODE_REORDER; } else { mDragMode = DRAG_MODE_NONE; } } } // This is used to compute the visual center of the dragView. The idea is that // the visual center represents the user's interpretation of where the item is, and hence // is the appropriate point to use when determining drop location. private float[] getDragViewVisualCenter(int x, int y, int xOffset, int yOffset, DragView dragView, float[] recycle) { float res[]; if (recycle == null) { res = new float[2]; } else { res = recycle; } // These represent the visual top and left of drag view if a dragRect was provided. // If a dragRect was not provided, then they correspond to the actual view left and // top, as the dragRect is in that case taken to be the entire dragView. // R.dimen.dragViewOffsetY. int left = x - xOffset; int top = y - yOffset; // In order to find the visual center, we shift by half the dragRect res[0] = left + dragView.getDragRegion().width() / 2; res[1] = top + dragView.getDragRegion().height() / 2; return res; } OnAlarmListener mOnExitAlarmListener = new OnAlarmListener() { public void onAlarm(Alarm alarm) { completeDragExit(); } }; public void completeDragExit() { mLauncher.closeFolder(); mCurrentDragInfo = null; mCurrentDragView = null; mSuppressOnAdd = false; mRearrangeOnClose = true; } public void onDragExit(DragObject d) { // Exiting folder; stop the auto scroller. mAutoScrollHelper.setEnabled(false); // We only close the folder if this is a true drag exit, ie. not because // a drop has occurred above the folder. if (!d.dragComplete) { mOnExitAlarm.setOnAlarmListener(mOnExitAlarmListener); mOnExitAlarm.setAlarm(ON_EXIT_CLOSE_DELAY); } mReorderAlarm.cancelAlarm(); mDragMode = DRAG_MODE_NONE; } public void onDropCompleted(final View target, final DragObject d, final boolean isFlingToDelete, final boolean success) { if (mDeferDropAfterUninstall) { Log.d(TAG, "Deferred handling drop because waiting for uninstall."); mDeferredAction = new Runnable() { public void run() { onDropCompleted(target, d, isFlingToDelete, success); mDeferredAction = null; } }; return; } boolean beingCalledAfterUninstall = mDeferredAction != null; boolean successfulDrop = success && (!beingCalledAfterUninstall || mUninstallSuccessful); if (successfulDrop) { if (mDeleteFolderOnDropCompleted && !mItemAddedBackToSelfViaIcon) { replaceFolderWithFinalItem(); } } else { setupContentForNumItems(getItemCount()); // The drag failed, we need to return the item to the folder mFolderIcon.onDrop(d); } if (target != this) { if (mOnExitAlarm.alarmPending()) { mOnExitAlarm.cancelAlarm(); if (!successfulDrop) { mSuppressFolderDeletion = true; } completeDragExit(); } } mDeleteFolderOnDropCompleted = false; mDragInProgress = false; mItemAddedBackToSelfViaIcon = false; mCurrentDragInfo = null; mCurrentDragView = null; mSuppressOnAdd = false; // Reordering may have occured, and we need to save the new item locations. We do this once // at the end to prevent unnecessary database operations. updateItemLocationsInDatabaseBatch(); } public void deferCompleteDropAfterUninstallActivity() { mDeferDropAfterUninstall = true; } public void onUninstallActivityReturned(boolean success) { mDeferDropAfterUninstall = false; mUninstallSuccessful = success; if (mDeferredAction != null) { mDeferredAction.run(); } } @Override public boolean supportsFlingToDelete() { return true; } public void onFlingToDelete(DragObject d, int x, int y, PointF vec) { // Do nothing } @Override public void onFlingToDeleteCompleted() { // Do nothing } private void updateItemLocationsInDatabase() { ArrayList<View> list = getItemsInReadingOrder(); for (int i = 0; i < list.size(); i++) { View v = list.get(i); ItemInfo info = (ItemInfo) v.getTag(); LauncherModel.moveItemInDatabase(mLauncher, info, mInfo.id, 0, info.cellX, info.cellY); } } private void updateItemLocationsInDatabaseBatch() { ArrayList<View> list = getItemsInReadingOrder(); ArrayList<ItemInfo> items = new ArrayList<ItemInfo>(); for (int i = 0; i < list.size(); i++) { View v = list.get(i); ItemInfo info = (ItemInfo) v.getTag(); items.add(info); } LauncherModel.moveItemsInDatabase(mLauncher, items, mInfo.id, 0); } public void addItemLocationsInDatabase() { ArrayList<View> list = getItemsInReadingOrder(); for (int i = 0; i < list.size(); i++) { View v = list.get(i); ItemInfo info = (ItemInfo) v.getTag(); LauncherModel.addItemToDatabase(mLauncher, info, mInfo.id, 0, info.cellX, info.cellY, false); } } public void notifyDrop() { if (mDragInProgress) { mItemAddedBackToSelfViaIcon = true; } } public boolean isDropEnabled() { return true; } private void setupContentDimensions(int count) { ArrayList<View> list = getItemsInReadingOrder(); int countX = mContent.getCountX(); int countY = mContent.getCountY(); boolean done = false; while (!done) { int oldCountX = countX; int oldCountY = countY; if (countX * countY < count) { // Current grid is too small, expand it if ((countX <= countY || countY == mMaxCountY) && countX < mMaxCountX) { countX++; } else if (countY < mMaxCountY) { countY++; } if (countY == 0) countY++; } else if ((countY - 1) * countX >= count && countY >= countX) { countY = Math.max(0, countY - 1); } else if ((countX - 1) * countY >= count) { countX = Math.max(0, countX - 1); } done = countX == oldCountX && countY == oldCountY; } mContent.setGridSize(countX, countY); arrangeChildren(list); } public boolean isFull() { return getItemCount() >= mMaxNumItems; } private void centerAboutIcon() { DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams(); DragLayer parent = (DragLayer) mLauncher.findViewById(R.id.drag_layer); int width = getPaddingLeft() + getPaddingRight() + mContent.getDesiredWidth(); int height = getFolderHeight(); float scale = parent.getDescendantRectRelativeToSelf(mFolderIcon, mTempRect); LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); int centerX = (int) (mTempRect.left + mTempRect.width() * scale / 2); int centerY = (int) (mTempRect.top + mTempRect.height() * scale / 2); int centeredLeft = centerX - width / 2; int centeredTop = centerY - height / 2; int currentPage = mLauncher.getWorkspace().getNextPage(); // In case the workspace is scrolling, we need to use the final scroll to compute // the folders bounds. mLauncher.getWorkspace().setFinalScrollForPageChange(currentPage); // We first fetch the currently visible CellLayoutChildren CellLayout currentLayout = (CellLayout) mLauncher.getWorkspace().getChildAt(currentPage); ShortcutAndWidgetContainer boundingLayout = currentLayout.getShortcutsAndWidgets(); Rect bounds = new Rect(); parent.getDescendantRectRelativeToSelf(boundingLayout, bounds); // We reset the workspaces scroll mLauncher.getWorkspace().resetFinalScrollForPageChange(currentPage); // We need to bound the folder to the currently visible CellLayoutChildren int left = Math.min(Math.max(bounds.left, centeredLeft), bounds.left + bounds.width() - width); int top = Math.min(Math.max(bounds.top, centeredTop), bounds.top + bounds.height() - height); if (grid.isPhone() && (grid.availableWidthPx - width) < grid.iconSizePx) { // Center the folder if it is full (on phones only) left = (grid.availableWidthPx - width) / 2; } else if (width >= bounds.width()) { // If the folder doesn't fit within the bounds, center it about the desired bounds left = bounds.left + (bounds.width() - width) / 2; } if (height >= bounds.height()) { top = bounds.top + (bounds.height() - height) / 2; } int folderPivotX = width / 2 + (centeredLeft - left); int folderPivotY = height / 2 + (centeredTop - top); setPivotX(folderPivotX); setPivotY(folderPivotY); mFolderIconPivotX = (int) (mFolderIcon.getMeasuredWidth() * (1.0f * folderPivotX / width)); mFolderIconPivotY = (int) (mFolderIcon.getMeasuredHeight() * (1.0f * folderPivotY / height)); lp.width = width; lp.height = height; lp.x = left; lp.y = top; } float getPivotXForIconAnimation() { return mFolderIconPivotX; } float getPivotYForIconAnimation() { return mFolderIconPivotY; } private void setupContentForNumItems(int count) { setupContentDimensions(count); DragLayer.LayoutParams lp = (DragLayer.LayoutParams) getLayoutParams(); if (lp == null) { lp = new DragLayer.LayoutParams(0, 0); lp.customPosition = true; setLayoutParams(lp); } centerAboutIcon(); } private int getContentAreaHeight() { LauncherAppState app = LauncherAppState.getInstance(); DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); Rect workspacePadding = grid .getWorkspacePadding(grid.isLandscape ? CellLayout.LANDSCAPE : CellLayout.PORTRAIT); int maxContentAreaHeight = grid.availableHeightPx - 4 * grid.edgeMarginPx - workspacePadding.top - workspacePadding.bottom - getPaddingTop() - getPaddingBottom() - mFolderNameHeight; return Math.min(maxContentAreaHeight, mContent.getDesiredHeight()); } private int getFolderHeight() { int height = getPaddingTop() + getPaddingBottom() + getContentAreaHeight() + mFolderNameHeight; return height; } protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int width = getPaddingLeft() + getPaddingRight() + mContent.getDesiredWidth(); int height = getFolderHeight(); int contentAreaWidthSpec = MeasureSpec.makeMeasureSpec(mContent.getDesiredWidth(), MeasureSpec.EXACTLY); int contentAreaHeightSpec = MeasureSpec.makeMeasureSpec(getContentAreaHeight(), MeasureSpec.EXACTLY); mContent.setFixedSize(mContent.getDesiredWidth(), mContent.getDesiredHeight()); mScrollView.measure(contentAreaWidthSpec, contentAreaHeightSpec); mFolderName.measure(contentAreaWidthSpec, MeasureSpec.makeMeasureSpec(mFolderNameHeight, MeasureSpec.EXACTLY)); setMeasuredDimension(width, height); } private void arrangeChildren(ArrayList<View> list) { int[] vacant = new int[2]; if (list == null) { list = getItemsInReadingOrder(); } mContent.removeAllViews(); for (int i = 0; i < list.size(); i++) { View v = list.get(i); mContent.getVacantCell(vacant, 1, 1); CellLayout.LayoutParams lp = (CellLayout.LayoutParams) v.getLayoutParams(); lp.cellX = vacant[0]; lp.cellY = vacant[1]; ItemInfo info = (ItemInfo) v.getTag(); if (info.cellX != vacant[0] || info.cellY != vacant[1]) { info.cellX = vacant[0]; info.cellY = vacant[1]; LauncherModel.addOrMoveItemInDatabase(mLauncher, info, mInfo.id, 0, info.cellX, info.cellY); } boolean insert = false; mContent.addViewToCellLayout(v, insert ? 0 : -1, (int) info.id, lp, true); } mItemsInvalidated = true; } public int getItemCount() { return mContent.getShortcutsAndWidgets().getChildCount(); } public View getItemAt(int index) { return mContent.getShortcutsAndWidgets().getChildAt(index); } private void onCloseComplete() { DragLayer parent = (DragLayer) getParent(); if (parent != null) { parent.removeView(this); } mDragController.removeDropTarget((DropTarget) this); clearFocus(); mFolderIcon.requestFocus(); if (mRearrangeOnClose) { setupContentForNumItems(getItemCount()); mRearrangeOnClose = false; } if (getItemCount() <= 1) { if (!mDragInProgress && !mSuppressFolderDeletion) { replaceFolderWithFinalItem(); } else if (mDragInProgress) { mDeleteFolderOnDropCompleted = true; } } mSuppressFolderDeletion = false; } private void replaceFolderWithFinalItem() { // Add the last remaining child to the workspace in place of the folder Runnable onCompleteRunnable = new Runnable() { @Override public void run() { CellLayout cellLayout = mLauncher.getCellLayout(mInfo.container, mInfo.screenId); View child = null; // Move the item from the folder to the workspace, in the position of the folder if (getItemCount() == 1) { ShortcutInfo finalItem = mInfo.contents.get(0); child = mLauncher.createShortcut(R.layout.application, cellLayout, finalItem); LauncherModel.addOrMoveItemInDatabase(mLauncher, finalItem, mInfo.container, mInfo.screenId, mInfo.cellX, mInfo.cellY); } if (getItemCount() <= 1) { // Remove the folder LauncherModel.deleteItemFromDatabase(mLauncher, mInfo); cellLayout.removeView(mFolderIcon); if (mFolderIcon instanceof DropTarget) { mDragController.removeDropTarget((DropTarget) mFolderIcon); } mLauncher.removeFolder(mInfo); } // We add the child after removing the folder to prevent both from existing at // the same time in the CellLayout. We need to add the new item with addInScreenFromBind() // to ensure that hotseat items are placed correctly. if (child != null) { mLauncher.getWorkspace().addInScreenFromBind(child, mInfo.container, mInfo.screenId, mInfo.cellX, mInfo.cellY, mInfo.spanX, mInfo.spanY); } } }; View finalChild = getItemAt(0); if (finalChild != null) { mFolderIcon.performDestroyAnimation(finalChild, onCompleteRunnable); } mDestroyed = true; } boolean isDestroyed() { return mDestroyed; } // This method keeps track of the last item in the folder for the purposes // of keyboard focus private void updateTextViewFocus() { View lastChild = getItemAt(getItemCount() - 1); getItemAt(getItemCount() - 1); if (lastChild != null) { mFolderName.setNextFocusDownId(lastChild.getId()); mFolderName.setNextFocusRightId(lastChild.getId()); mFolderName.setNextFocusLeftId(lastChild.getId()); mFolderName.setNextFocusUpId(lastChild.getId()); } } public void onDrop(DragObject d) { ShortcutInfo item; if (d.dragInfo instanceof AppInfo) { // Came from all apps -- make a copy item = ((AppInfo) d.dragInfo).makeShortcut(); item.spanX = 1; item.spanY = 1; } else { item = (ShortcutInfo) d.dragInfo; } // Dragged from self onto self, currently this is the only path possible, however // we keep this as a distinct code path. if (item == mCurrentDragInfo) { ShortcutInfo si = (ShortcutInfo) mCurrentDragView.getTag(); CellLayout.LayoutParams lp = (CellLayout.LayoutParams) mCurrentDragView.getLayoutParams(); si.cellX = lp.cellX = mEmptyCell[0]; si.cellX = lp.cellY = mEmptyCell[1]; mContent.addViewToCellLayout(mCurrentDragView, -1, (int) item.id, lp, true); if (d.dragView.hasDrawn()) { mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, mCurrentDragView); } else { d.deferDragViewCleanupPostAnimation = false; mCurrentDragView.setVisibility(VISIBLE); } mItemsInvalidated = true; setupContentDimensions(getItemCount()); mSuppressOnAdd = true; } mInfo.add(item); } // This is used so the item doesn't immediately appear in the folder when added. In one case // we need to create the illusion that the item isn't added back to the folder yet, to // to correspond to the animation of the icon back into the folder. This is public void hideItem(ShortcutInfo info) { View v = getViewForInfo(info); v.setVisibility(INVISIBLE); } public void showItem(ShortcutInfo info) { View v = getViewForInfo(info); v.setVisibility(VISIBLE); } public void onAdd(ShortcutInfo item) { mItemsInvalidated = true; // If the item was dropped onto this open folder, we have done the work associated // with adding the item to the folder, as indicated by mSuppressOnAdd being set if (mSuppressOnAdd) return; if (!findAndSetEmptyCells(item)) { // The current layout is full, can we expand it? setupContentForNumItems(getItemCount() + 1); findAndSetEmptyCells(item); } createAndAddShortcut(item); LauncherModel.addOrMoveItemInDatabase(mLauncher, item, mInfo.id, 0, item.cellX, item.cellY); } public void onRemove(ShortcutInfo item) { mItemsInvalidated = true; // If this item is being dragged from this open folder, we have already handled // the work associated with removing the item, so we don't have to do anything here. if (item == mCurrentDragInfo) return; View v = getViewForInfo(item); mContent.removeView(v); if (mState == STATE_ANIMATING) { mRearrangeOnClose = true; } else { setupContentForNumItems(getItemCount()); } if (getItemCount() <= 1) { replaceFolderWithFinalItem(); } } private View getViewForInfo(ShortcutInfo item) { for (int j = 0; j < mContent.getCountY(); j++) { for (int i = 0; i < mContent.getCountX(); i++) { View v = mContent.getChildAt(i, j); if (v.getTag() == item) { return v; } } } return null; } public void onItemsChanged() { updateTextViewFocus(); } public void onTitleChanged(CharSequence title) { } public ArrayList<View> getItemsInReadingOrder() { if (mItemsInvalidated) { mItemsInReadingOrder.clear(); for (int j = 0; j < mContent.getCountY(); j++) { for (int i = 0; i < mContent.getCountX(); i++) { View v = mContent.getChildAt(i, j); if (v != null) { mItemsInReadingOrder.add(v); } } } mItemsInvalidated = false; } return mItemsInReadingOrder; } public void getLocationInDragLayer(int[] loc) { mLauncher.getDragLayer().getLocationInDragLayer(this, loc); } public void onFocusChange(View v, boolean hasFocus) { if (v == mFolderName && hasFocus) { startEditingFolderName(); } } @Override public void getHitRectRelativeToDragLayer(Rect outRect) { getHitRect(outRect); } }