| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.launcher3; |
| |
| import android.annotation.SuppressLint; |
| import android.annotation.TargetApi; |
| import android.content.ComponentName; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.graphics.drawable.InsetDrawable; |
| import android.os.Build; |
| import android.support.v7.widget.RecyclerView; |
| import android.text.Editable; |
| import android.text.TextWatcher; |
| import android.util.AttributeSet; |
| import android.view.KeyEvent; |
| import android.view.LayoutInflater; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.view.ViewGroup; |
| import android.view.inputmethod.EditorInfo; |
| import android.view.inputmethod.InputMethodManager; |
| import android.widget.FrameLayout; |
| import android.widget.TextView; |
| |
| import com.android.launcher3.util.Thunk; |
| |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| |
| /** |
| * The all apps view container. |
| */ |
| public class AppsContainerView extends BaseContainerView implements DragSource, Insettable, |
| TextWatcher, TextView.OnEditorActionListener, LauncherTransitionable, |
| AlphabeticalAppsList.FilterChangedCallback, AppsGridAdapter.PredictionBarSpacerCallbacks, |
| View.OnTouchListener, View.OnClickListener, View.OnLongClickListener { |
| |
| public static final boolean GRID_MERGE_SECTIONS = true; |
| |
| private static final boolean ALLOW_SINGLE_APP_LAUNCH = true; |
| private static final boolean DYNAMIC_HEADER_ELEVATION = true; |
| private static final boolean DISMISS_SEARCH_ON_BACK = true; |
| private static final float HEADER_ELEVATION_DP = 4; |
| // How far the user has to scroll in order to reach the full elevation |
| private static final float HEADER_SCROLL_TO_ELEVATION_DP = 16; |
| private static final int FADE_IN_DURATION = 175; |
| private static final int FADE_OUT_DURATION = 100; |
| private static final int SEARCH_TRANSLATION_X_DP = 18; |
| |
| private static final Pattern SPLIT_PATTERN = Pattern.compile("[\\s|\\p{javaSpaceChar}]+"); |
| |
| @Thunk Launcher mLauncher; |
| @Thunk AlphabeticalAppsList mApps; |
| private LayoutInflater mLayoutInflater; |
| private AppsGridAdapter mAdapter; |
| private RecyclerView.LayoutManager mLayoutManager; |
| private RecyclerView.ItemDecoration mItemDecoration; |
| |
| private FrameLayout mContentView; |
| @Thunk AppsContainerRecyclerView mAppsRecyclerView; |
| private ViewGroup mPredictionBarView; |
| private View mHeaderView; |
| private View mSearchBarContainerView; |
| private View mSearchButtonView; |
| private View mDismissSearchButtonView; |
| private AppsContainerSearchEditTextView mSearchBarEditView; |
| |
| private int mNumAppsPerRow; |
| private int mNumPredictedAppsPerRow; |
| // This coordinate is relative to this container view |
| private final Point mBoundsCheckLastTouchDownPos = new Point(-1, -1); |
| // This coordinate is relative to its parent |
| private final Point mIconLastTouchPos = new Point(); |
| // This coordinate is used to proxy click and long-click events to the prediction bar icons |
| private final Point mPredictionIconTouchDownPos = new Point(); |
| private int mContentMarginStart; |
| // Normal container insets |
| private int mContainerInset; |
| private int mPredictionBarHeight; |
| // RecyclerView scroll position |
| @Thunk int mRecyclerViewScrollY; |
| |
| private CheckLongPressHelper mPredictionIconCheckForLongPress; |
| private View mPredictionIconUnderTouch; |
| |
| public AppsContainerView(Context context) { |
| this(context, null); |
| } |
| |
| public AppsContainerView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public AppsContainerView(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| LauncherAppState app = LauncherAppState.getInstance(); |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| Resources res = context.getResources(); |
| |
| mContainerInset = context.getResources().getDimensionPixelSize( |
| R.dimen.apps_container_inset); |
| mPredictionBarHeight = grid.allAppsCellHeightPx + |
| 2 * res.getDimensionPixelSize(R.dimen.apps_prediction_icon_top_bottom_padding); |
| mLauncher = (Launcher) context; |
| mLayoutInflater = LayoutInflater.from(context); |
| mNumAppsPerRow = grid.appsViewNumCols; |
| mNumPredictedAppsPerRow = grid.appsViewNumPredictiveCols; |
| mApps = new AlphabeticalAppsList(context, this, mNumAppsPerRow, mNumPredictedAppsPerRow); |
| mAdapter = new AppsGridAdapter(context, mApps, mNumAppsPerRow, this, this, mLauncher, this); |
| mAdapter.setEmptySearchText(res.getString(R.string.loading_apps_message)); |
| mAdapter.setNumAppsPerRow(mNumAppsPerRow); |
| mAdapter.setPredictionRowHeight(mPredictionBarHeight); |
| mLayoutManager = mAdapter.getLayoutManager(); |
| mItemDecoration = mAdapter.getItemDecoration(); |
| mContentMarginStart = mAdapter.getContentMarginStart(); |
| mApps.setAdapter(mAdapter); |
| } |
| |
| /** |
| * Sets the current set of predicted apps. |
| */ |
| public void setPredictedApps(List<ComponentName> apps) { |
| mApps.setPredictedApps(apps); |
| } |
| |
| /** |
| * Sets the current set of apps. |
| */ |
| public void setApps(List<AppInfo> apps) { |
| mApps.setApps(apps); |
| } |
| |
| /** |
| * Adds new apps to the list. |
| */ |
| public void addApps(List<AppInfo> apps) { |
| mApps.addApps(apps); |
| } |
| |
| /** |
| * Updates existing apps in the list |
| */ |
| public void updateApps(List<AppInfo> apps) { |
| mApps.updateApps(apps); |
| } |
| |
| /** |
| * Removes some apps from the list. |
| */ |
| public void removeApps(List<AppInfo> apps) { |
| mApps.removeApps(apps); |
| } |
| |
| /** |
| * Hides the header bar |
| */ |
| public void hideHeaderBar() { |
| mHeaderView.setVisibility(View.GONE); |
| onUpdateBackgrounds(); |
| onUpdatePaddings(); |
| } |
| |
| /** |
| * Scrolls this list view to the top. |
| */ |
| public void scrollToTop() { |
| mAppsRecyclerView.scrollToTop(); |
| } |
| |
| /** |
| * Returns the content view used for the launcher transitions. |
| */ |
| public View getContentView() { |
| return mContentView; |
| } |
| |
| /** |
| * Returns the reveal view used for the launcher transitions. |
| */ |
| public View getRevealView() { |
| return findViewById(R.id.apps_view_transition_overlay); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| boolean isRtl = Utilities.isRtl(getResources()); |
| mAdapter.setRtl(isRtl); |
| |
| // Work around the search box getting first focus and showing the cursor by |
| // proxying the focus from the content view to the recycler view directly |
| mContentView = (FrameLayout) findViewById(R.id.apps_list); |
| mContentView.setOnFocusChangeListener(new View.OnFocusChangeListener() { |
| @Override |
| public void onFocusChange(View v, boolean hasFocus) { |
| if (v == mContentView && hasFocus) { |
| mAppsRecyclerView.requestFocus(); |
| } |
| } |
| }); |
| |
| // Fix the header view elevation if not dynamically calculating it |
| mHeaderView = findViewById(R.id.header); |
| mHeaderView.setOnClickListener(this); |
| if (Utilities.isLmpOrAbove() && !DYNAMIC_HEADER_ELEVATION) { |
| mHeaderView.setElevation(DynamicGrid.pxFromDp(HEADER_ELEVATION_DP, |
| getContext().getResources().getDisplayMetrics())); |
| } |
| |
| // Fix the prediction bar size |
| mPredictionBarView = (ViewGroup) findViewById(R.id.prediction_bar); |
| FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mPredictionBarView.getLayoutParams(); |
| lp.height = mPredictionBarHeight; |
| |
| mSearchButtonView = mHeaderView.findViewById(R.id.search_button); |
| mSearchBarContainerView = findViewById(R.id.app_search_container); |
| mDismissSearchButtonView = mSearchBarContainerView.findViewById(R.id.dismiss_search_button); |
| mDismissSearchButtonView.setOnClickListener(this); |
| mSearchBarEditView = (AppsContainerSearchEditTextView) findViewById(R.id.app_search_box); |
| if (mSearchBarEditView != null) { |
| mSearchBarEditView.addTextChangedListener(this); |
| mSearchBarEditView.setOnEditorActionListener(this); |
| if (DISMISS_SEARCH_ON_BACK) { |
| mSearchBarEditView.setOnBackKeyListener( |
| new AppsContainerSearchEditTextView.OnBackKeyListener() { |
| @Override |
| public void onBackKey() { |
| // Only hide the search field if there is no query, or if there |
| // are no filtered results |
| String query = Utilities.trim( |
| mSearchBarEditView.getEditableText().toString()); |
| if (query.isEmpty() || mApps.hasNoFilteredResults()) { |
| hideSearchField(true, true); |
| } |
| } |
| }); |
| } |
| } |
| mAppsRecyclerView = (AppsContainerRecyclerView) findViewById(R.id.apps_list_view); |
| mAppsRecyclerView.setApps(mApps); |
| mAppsRecyclerView.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow); |
| mAppsRecyclerView.setPredictionBarHeight(mPredictionBarHeight); |
| mAppsRecyclerView.setLayoutManager(mLayoutManager); |
| mAppsRecyclerView.setAdapter(mAdapter); |
| mAppsRecyclerView.setHasFixedSize(true); |
| mAppsRecyclerView.setOnScrollListenerProxy( |
| new BaseContainerRecyclerView.OnScrollToListener() { |
| @Override |
| public void onScrolledTo(int x, int y) { |
| mRecyclerViewScrollY = y; |
| onRecyclerViewScrolled(); |
| } |
| }); |
| if (mItemDecoration != null) { |
| mAppsRecyclerView.addItemDecoration(mItemDecoration); |
| } |
| onUpdateBackgrounds(); |
| onUpdatePaddings(); |
| } |
| |
| @Override |
| public void onBindPredictionBar() { |
| if (!updatePredictionBarVisibility()) { |
| return; |
| } |
| |
| List<AppInfo> predictedApps = mApps.getPredictedApps(); |
| int childCount = mPredictionBarView.getChildCount(); |
| for (int i = 0; i < mNumPredictedAppsPerRow; i++) { |
| BubbleTextView icon; |
| if (i < childCount) { |
| // If a child at that index exists, then get that child |
| icon = (BubbleTextView) mPredictionBarView.getChildAt(i); |
| } else { |
| // Otherwise, inflate a new icon |
| icon = (BubbleTextView) mLayoutInflater.inflate( |
| R.layout.apps_prediction_bar_icon_view, mPredictionBarView, false); |
| icon.setFocusable(true); |
| mPredictionBarView.addView(icon); |
| } |
| |
| // Either apply the app info to the child, or hide the view |
| if (i < predictedApps.size()) { |
| if (icon.getVisibility() != View.VISIBLE) { |
| icon.setVisibility(View.VISIBLE); |
| } |
| icon.applyFromApplicationInfo(predictedApps.get(i)); |
| } else { |
| icon.setVisibility(View.INVISIBLE); |
| } |
| } |
| } |
| |
| @Override |
| protected void onFixedBoundsUpdated() { |
| // Update the number of items in the grid |
| LauncherAppState app = LauncherAppState.getInstance(); |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| if (grid.updateAppsViewNumCols(getContext().getResources(), mFixedBounds.width())) { |
| mNumAppsPerRow = grid.appsViewNumCols; |
| mNumPredictedAppsPerRow = grid.appsViewNumPredictiveCols; |
| mAppsRecyclerView.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow); |
| mAdapter.setNumAppsPerRow(mNumAppsPerRow); |
| mApps.setNumAppsPerRow(mNumAppsPerRow, mNumPredictedAppsPerRow); |
| } |
| } |
| |
| /** |
| * Update the padding of the Apps view and children. To ensure that the RecyclerView has the |
| * full width to handle touches right to the edge of the screen, we only apply the top and |
| * bottom padding to the AppsContainerView and then the left/right padding on the RecyclerView |
| * itself. In particular, the left/right padding is applied to the background of the view, |
| * and then additionally inset by the start margin. |
| */ |
| @Override |
| protected void onUpdatePaddings() { |
| boolean isRtl = Utilities.isRtl(getResources()); |
| boolean hasSearchBar = (mSearchBarEditView != null) && |
| (mSearchBarEditView.getVisibility() == View.VISIBLE); |
| |
| if (mFixedBounds.isEmpty()) { |
| // If there are no fixed bounds, then use the default padding and insets |
| setPadding(mInsets.left, mContainerInset + mInsets.top, mInsets.right, |
| mContainerInset + mInsets.bottom); |
| } else { |
| // If there are fixed bounds, then we update the padding to reflect the fixed bounds. |
| setPadding(mFixedBounds.left, mFixedBounds.top, getMeasuredWidth() - mFixedBounds.right, |
| mFixedBounds.bottom); |
| } |
| |
| // Update the apps recycler view, inset it by the container inset as well |
| DeviceProfile grid = LauncherAppState.getInstance().getDynamicGrid().getDeviceProfile(); |
| int startMargin = grid.isPhone() ? mContentMarginStart : 0; |
| int inset = mFixedBounds.isEmpty() ? mContainerInset : mFixedBoundsContainerInset; |
| if (isRtl) { |
| mAppsRecyclerView.setPadding(inset + mAppsRecyclerView.getScrollbarWidth(), inset, |
| inset + startMargin, inset); |
| } else { |
| mAppsRecyclerView.setPadding(inset + startMargin, inset, |
| inset + mAppsRecyclerView.getScrollbarWidth(), inset); |
| } |
| |
| // Update the header bar |
| if (hasSearchBar) { |
| FrameLayout.LayoutParams lp = |
| (FrameLayout.LayoutParams) mHeaderView.getLayoutParams(); |
| lp.leftMargin = lp.rightMargin = inset; |
| mHeaderView.requestLayout(); |
| } |
| |
| FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mPredictionBarView.getLayoutParams(); |
| lp.leftMargin = inset + mAppsRecyclerView.getScrollbarWidth(); |
| lp.rightMargin = inset + mAppsRecyclerView.getScrollbarWidth(); |
| mPredictionBarView.requestLayout(); |
| } |
| |
| /** |
| * Update the background of the Apps view and children. |
| */ |
| @Override |
| protected void onUpdateBackgrounds() { |
| int inset = mFixedBounds.isEmpty() ? mContainerInset : mFixedBoundsContainerInset; |
| boolean hasSearchBar = (mSearchBarEditView != null) && |
| (mSearchBarEditView.getVisibility() == View.VISIBLE); |
| |
| // Update the background of the reveal view and list to be inset with the fixed bound |
| // insets instead of the default insets |
| // TODO: Use quantum_panel instead of quantum_panel_shape. |
| mAppsRecyclerView.setBackground(new InsetDrawable( |
| getContext().getResources().getDrawable( |
| hasSearchBar ? R.drawable.apps_list_search_bg : R.drawable.quantum_panel_shape), |
| inset, 0, inset, 0)); |
| getRevealView().setBackground(new InsetDrawable( |
| getContext().getResources().getDrawable(R.drawable.quantum_panel_shape), |
| inset, 0, inset, 0)); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| return handleTouchEvent(ev); |
| } |
| |
| @SuppressLint("ClickableViewAccessibility") |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| return handleTouchEvent(ev); |
| } |
| |
| @SuppressLint("ClickableViewAccessibility") |
| @Override |
| public boolean onTouch(View v, MotionEvent ev) { |
| switch (ev.getAction()) { |
| case MotionEvent.ACTION_DOWN: |
| case MotionEvent.ACTION_MOVE: |
| mIconLastTouchPos.set((int) ev.getX(), (int) ev.getY()); |
| break; |
| } |
| return false; |
| } |
| |
| @Override |
| public void onClick(View v) { |
| if (v == mHeaderView) { |
| showSearchField(); |
| } else if (v == mDismissSearchButtonView) { |
| hideSearchField(true, true); |
| } |
| } |
| |
| @Override |
| public boolean onLongClick(View v) { |
| // Return early if this is not initiated from a touch |
| if (!v.isInTouchMode()) return false; |
| // When we have exited all apps or are in transition, disregard long clicks |
| if (!mLauncher.isAppsViewVisible() || |
| mLauncher.getWorkspace().isSwitchingState()) return false; |
| // Return if global dragging is not enabled |
| if (!mLauncher.isDraggingEnabled()) return false; |
| |
| // Start the drag |
| mLauncher.getWorkspace().beginDragShared(v, mIconLastTouchPos, this, false); |
| // Enter spring loaded mode |
| mLauncher.enterSpringLoadedDragMode(); |
| |
| return false; |
| } |
| |
| @Override |
| public boolean supportsFlingToDelete() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsAppInfoDropTarget() { |
| return true; |
| } |
| |
| @Override |
| public boolean supportsDeleteDropTarget() { |
| return false; |
| } |
| |
| @Override |
| public float getIntrinsicIconScaleFactor() { |
| LauncherAppState app = LauncherAppState.getInstance(); |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| return (float) grid.allAppsIconSizePx / grid.iconSizePx; |
| } |
| |
| @Override |
| public void onFlingToDeleteCompleted() { |
| // We just dismiss the drag when we fling, so cleanup here |
| mLauncher.exitSpringLoadedDragModeDelayed(true, |
| Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); |
| mLauncher.unlockScreenOrientation(false); |
| } |
| |
| @Override |
| public void onDropCompleted(View target, DropTarget.DragObject d, boolean isFlingToDelete, |
| boolean success) { |
| if (isFlingToDelete || !success || (target != mLauncher.getWorkspace() && |
| !(target instanceof DeleteDropTarget) && !(target instanceof Folder))) { |
| // Exit spring loaded mode if we have not successfully dropped or have not handled the |
| // drop in Workspace |
| mLauncher.exitSpringLoadedDragModeDelayed(true, |
| Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null); |
| } |
| mLauncher.unlockScreenOrientation(false); |
| |
| // Display an error message if the drag failed due to there not being enough space on the |
| // target layout we were dropping on. |
| if (!success) { |
| boolean showOutOfSpaceMessage = false; |
| if (target instanceof Workspace) { |
| int currentScreen = mLauncher.getCurrentWorkspaceScreen(); |
| Workspace workspace = (Workspace) target; |
| CellLayout layout = (CellLayout) workspace.getChildAt(currentScreen); |
| ItemInfo itemInfo = (ItemInfo) d.dragInfo; |
| if (layout != null) { |
| layout.calculateSpans(itemInfo); |
| showOutOfSpaceMessage = |
| !layout.findCellForSpan(null, itemInfo.spanX, itemInfo.spanY); |
| } |
| } |
| if (showOutOfSpaceMessage) { |
| mLauncher.showOutOfSpaceMessage(false); |
| } |
| |
| d.deferDragViewCleanupPostAnimation = false; |
| } |
| } |
| |
| @Override |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| // Do nothing |
| } |
| |
| @Override |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| // Do nothing |
| } |
| |
| @Override |
| public void afterTextChanged(final Editable s) { |
| String queryText = s.toString(); |
| if (queryText.isEmpty()) { |
| mApps.setFilter(null); |
| } else { |
| String formatStr = getResources().getString(R.string.apps_view_no_search_results); |
| mAdapter.setEmptySearchText(String.format(formatStr, queryText)); |
| |
| // Do an intersection of the words in the query and each title, and filter out all the |
| // apps that don't match all of the words in the query. |
| final String queryTextLower = queryText.toLowerCase(); |
| final String[] queryWords = SPLIT_PATTERN.split(queryTextLower); |
| mApps.setFilter(new AlphabeticalAppsList.Filter() { |
| @Override |
| public boolean retainApp(AppInfo info, String sectionName) { |
| if (sectionName.toLowerCase().contains(queryTextLower)) { |
| return true; |
| } |
| String title = info.title.toString(); |
| String[] words = SPLIT_PATTERN.split(title.toLowerCase()); |
| for (int qi = 0; qi < queryWords.length; qi++) { |
| boolean foundMatch = false; |
| for (int i = 0; i < words.length; i++) { |
| if (words[i].startsWith(queryWords[qi])) { |
| foundMatch = true; |
| break; |
| } |
| } |
| if (!foundMatch) { |
| // If there is a word in the query that does not match any words in this |
| // title, so skip it. |
| return false; |
| } |
| } |
| return true; |
| } |
| }); |
| } |
| scrollToTop(); |
| } |
| |
| @Override |
| public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { |
| if (ALLOW_SINGLE_APP_LAUNCH && actionId == EditorInfo.IME_ACTION_DONE) { |
| // Skip the quick-launch if there isn't exactly one item |
| if (mApps.getSize() != 1) { |
| return false; |
| } |
| |
| List<AlphabeticalAppsList.AdapterItem> items = mApps.getAdapterItems(); |
| for (int i = 0; i < items.size(); i++) { |
| AlphabeticalAppsList.AdapterItem item = items.get(i); |
| if (item.viewType == AppsGridAdapter.ICON_VIEW_TYPE) { |
| mAppsRecyclerView.getChildAt(i).performClick(); |
| getInputMethodManager().hideSoftInputFromWindow(getWindowToken(), 0); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public void onFilterChanged() { |
| updatePredictionBarVisibility(); |
| } |
| |
| @Override |
| public View getContent() { |
| return null; |
| } |
| |
| @Override |
| public void onLauncherTransitionPrepare(Launcher l, boolean animated, boolean toWorkspace) { |
| // Do nothing |
| } |
| |
| @Override |
| public void onLauncherTransitionStart(Launcher l, boolean animated, boolean toWorkspace) { |
| // Do nothing |
| } |
| |
| @Override |
| public void onLauncherTransitionStep(Launcher l, float t) { |
| // Do nothing |
| } |
| |
| @Override |
| public void onLauncherTransitionEnd(Launcher l, boolean animated, boolean toWorkspace) { |
| if (mSearchBarEditView != null) { |
| if (toWorkspace) { |
| hideSearchField(false, false); |
| } |
| } |
| } |
| |
| /** |
| * Updates the container when the recycler view is scrolled. |
| */ |
| @TargetApi(Build.VERSION_CODES.LOLLIPOP) |
| private void onRecyclerViewScrolled() { |
| if (DYNAMIC_HEADER_ELEVATION && Utilities.isLmpOrAbove()) { |
| int elevation = DynamicGrid.pxFromDp(HEADER_ELEVATION_DP, |
| getContext().getResources().getDisplayMetrics()); |
| int scrollToElevation = DynamicGrid.pxFromDp(HEADER_SCROLL_TO_ELEVATION_DP, |
| getContext().getResources().getDisplayMetrics()); |
| float elevationPct = (float) Math.min(mRecyclerViewScrollY, scrollToElevation) / |
| scrollToElevation; |
| float newElevation = elevation * elevationPct; |
| if (Float.compare(mHeaderView.getElevation(), newElevation) != 0) { |
| mHeaderView.setElevation(newElevation); |
| } |
| } |
| |
| mPredictionBarView.setTranslationY(-mRecyclerViewScrollY + mAppsRecyclerView.getPaddingTop()); |
| } |
| |
| @Override |
| public void requestDisallowInterceptTouchEvent(boolean disallowIntercept) { |
| // If we were waiting for long-click, cancel the request once a child has started handling |
| // the scrolling |
| if (mPredictionIconCheckForLongPress != null) { |
| mPredictionIconCheckForLongPress.cancelLongPress(); |
| } |
| super.requestDisallowInterceptTouchEvent(disallowIntercept); |
| } |
| |
| /** |
| * Handles the touch events to dismiss all apps when clicking outside the bounds of the |
| * recycler view. |
| */ |
| private boolean handleTouchEvent(MotionEvent ev) { |
| LauncherAppState app = LauncherAppState.getInstance(); |
| DeviceProfile grid = app.getDynamicGrid().getDeviceProfile(); |
| int x = (int) ev.getX(); |
| int y = (int) ev.getY(); |
| |
| switch (ev.getAction()) { |
| case MotionEvent.ACTION_DOWN: |
| // We workaround the fact that the recycler view needs the touches for the scroll |
| // and we want to intercept it for clicks in the prediction bar by handling clicks |
| // and long clicks in the prediction bar ourselves. |
| mPredictionIconTouchDownPos.set(x, y); |
| mPredictionIconUnderTouch = findPredictedAppAtCoordinate(x, y); |
| if (mPredictionIconUnderTouch != null) { |
| mPredictionIconCheckForLongPress = |
| new CheckLongPressHelper(mPredictionIconUnderTouch, this); |
| mPredictionIconCheckForLongPress.postCheckForLongPress(); |
| } |
| |
| if (!mFixedBounds.isEmpty()) { |
| // Outset the fixed bounds and check if the touch is outside all apps |
| Rect tmpRect = new Rect(mFixedBounds); |
| tmpRect.inset(-grid.allAppsIconSizePx / 2, 0); |
| if (ev.getX() < tmpRect.left || ev.getX() > tmpRect.right) { |
| mBoundsCheckLastTouchDownPos.set(x, y); |
| return true; |
| } |
| } else { |
| // Check if the touch is outside all apps |
| if (ev.getX() < getPaddingLeft() || |
| ev.getX() > (getWidth() - getPaddingRight())) { |
| mBoundsCheckLastTouchDownPos.set(x, y); |
| return true; |
| } |
| } |
| break; |
| case MotionEvent.ACTION_UP: |
| if (mBoundsCheckLastTouchDownPos.x > -1) { |
| ViewConfiguration viewConfig = ViewConfiguration.get(getContext()); |
| float dx = ev.getX() - mBoundsCheckLastTouchDownPos.x; |
| float dy = ev.getY() - mBoundsCheckLastTouchDownPos.y; |
| float distance = (float) Math.hypot(dx, dy); |
| if (distance < viewConfig.getScaledTouchSlop()) { |
| // The background was clicked, so just go home |
| Launcher launcher = (Launcher) getContext(); |
| launcher.showWorkspace(true); |
| return true; |
| } |
| } |
| |
| // Trigger the click on the prediction bar icon if that's where we touched |
| if (mPredictionIconUnderTouch != null && |
| !mPredictionIconCheckForLongPress.hasPerformedLongPress()) { |
| mLauncher.onClick(mPredictionIconUnderTouch); |
| } |
| |
| // Fall through |
| case MotionEvent.ACTION_CANCEL: |
| mBoundsCheckLastTouchDownPos.set(-1, -1); |
| mPredictionIconTouchDownPos.set(-1, -1); |
| |
| // On touch up/cancel, cancel the long press on the prediction bar icon if it has |
| // not yet been performed |
| if (mPredictionIconCheckForLongPress != null) { |
| mPredictionIconCheckForLongPress.cancelLongPress(); |
| mPredictionIconCheckForLongPress = null; |
| } |
| mPredictionIconUnderTouch = null; |
| |
| break; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the predicted app in the prediction bar given a set of local coordinates. |
| */ |
| private View findPredictedAppAtCoordinate(int x, int y) { |
| int[] coord = {x, y}; |
| Rect hitRect = new Rect(); |
| Utilities.mapCoordInSelfToDescendent(mPredictionBarView, this, coord); |
| for (int i = 0; i < mPredictionBarView.getChildCount(); i++) { |
| View child = mPredictionBarView.getChildAt(i); |
| child.getHitRect(hitRect); |
| if (hitRect.contains(coord[0], coord[1])) { |
| return child; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Shows the search field. |
| */ |
| private void showSearchField() { |
| // Show the search bar and focus the search |
| final int translationX = DynamicGrid.pxFromDp(SEARCH_TRANSLATION_X_DP, |
| getContext().getResources().getDisplayMetrics()); |
| mSearchBarContainerView.setVisibility(View.VISIBLE); |
| mSearchBarContainerView.setAlpha(0f); |
| mSearchBarContainerView.setTranslationX(translationX); |
| mSearchBarContainerView.animate() |
| .alpha(1f) |
| .translationX(0) |
| .setDuration(FADE_IN_DURATION) |
| .withLayer() |
| .withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| mSearchBarEditView.requestFocus(); |
| getInputMethodManager().showSoftInput(mSearchBarEditView, |
| InputMethodManager.SHOW_IMPLICIT); |
| } |
| }); |
| mSearchButtonView.animate() |
| .alpha(0f) |
| .translationX(-translationX) |
| .setDuration(FADE_OUT_DURATION) |
| .withLayer(); |
| } |
| |
| /** |
| * Hides the search field. |
| */ |
| private void hideSearchField(boolean animated, final boolean returnFocusToRecyclerView) { |
| final boolean resetTextField = mSearchBarEditView.getText().toString().length() > 0; |
| final int translationX = DynamicGrid.pxFromDp(SEARCH_TRANSLATION_X_DP, |
| getContext().getResources().getDisplayMetrics()); |
| if (animated) { |
| // Hide the search bar and focus the recycler view |
| mSearchBarContainerView.animate() |
| .alpha(0f) |
| .translationX(0) |
| .setDuration(FADE_IN_DURATION) |
| .withLayer() |
| .withEndAction(new Runnable() { |
| @Override |
| public void run() { |
| mSearchBarContainerView.setVisibility(View.INVISIBLE); |
| if (resetTextField) { |
| mSearchBarEditView.setText(""); |
| } |
| mApps.setFilter(null); |
| if (returnFocusToRecyclerView) { |
| mAppsRecyclerView.requestFocus(); |
| } |
| } |
| }); |
| mSearchButtonView.setTranslationX(-translationX); |
| mSearchButtonView.animate() |
| .alpha(1f) |
| .translationX(0) |
| .setDuration(FADE_OUT_DURATION) |
| .withLayer(); |
| } else { |
| mSearchBarContainerView.setVisibility(View.INVISIBLE); |
| if (resetTextField) { |
| mSearchBarEditView.setText(""); |
| } |
| mApps.setFilter(null); |
| mSearchButtonView.setAlpha(1f); |
| mSearchButtonView.setTranslationX(0f); |
| if (returnFocusToRecyclerView) { |
| mAppsRecyclerView.requestFocus(); |
| } |
| } |
| getInputMethodManager().hideSoftInputFromWindow(getWindowToken(), 0); |
| } |
| |
| /** |
| * Updates the visibility of the prediction bar. |
| * @return whether the prediction bar is visible |
| */ |
| private boolean updatePredictionBarVisibility() { |
| boolean showPredictionBar = !mApps.getPredictedApps().isEmpty() && (!mApps.hasFilter() || |
| mSearchBarEditView.getEditableText().toString().isEmpty()); |
| if (showPredictionBar) { |
| mPredictionBarView.setVisibility(View.VISIBLE); |
| } else if (!showPredictionBar) { |
| mPredictionBarView.setVisibility(View.INVISIBLE); |
| } |
| return showPredictionBar; |
| } |
| |
| /** |
| * Returns an input method manager. |
| */ |
| private InputMethodManager getInputMethodManager() { |
| return (InputMethodManager) getContext().getSystemService(Context.INPUT_METHOD_SERVICE); |
| } |
| } |