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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (C) 2020 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.systemui.navigationbar;
import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_3BUTTON;
import android.annotation.Nullable;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.drawable.Icon;
import android.util.AttributeSet;
import android.util.Log;
import android.util.SparseArray;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.Space;
import com.android.internal.annotations.VisibleForTesting;
import com.android.systemui.Dependency;
import com.android.systemui.R;
import com.android.systemui.navigationbar.buttons.ButtonDispatcher;
import com.android.systemui.navigationbar.buttons.KeyButtonView;
import com.android.systemui.navigationbar.buttons.ReverseLinearLayout;
import com.android.systemui.navigationbar.buttons.ReverseLinearLayout.ReverseRelativeLayout;
import com.android.systemui.recents.OverviewProxyService;
import com.android.systemui.shared.system.QuickStepContract;
import java.io.PrintWriter;
import java.util.Objects;
public class NavigationBarInflaterView extends FrameLayout
implements NavigationModeController.ModeChangedListener {
private static final String TAG = "NavBarInflater";
public static final String NAV_BAR_VIEWS = "sysui_nav_bar";
public static final String NAV_BAR_LEFT = "sysui_nav_bar_left";
public static final String NAV_BAR_RIGHT = "sysui_nav_bar_right";
public static final String MENU_IME_ROTATE = "menu_ime";
public static final String BACK = "back";
public static final String HOME = "home";
public static final String RECENT = "recent";
public static final String NAVSPACE = "space";
public static final String CLIPBOARD = "clipboard";
public static final String HOME_HANDLE = "home_handle";
public static final String KEY = "key";
public static final String LEFT = "left";
public static final String RIGHT = "right";
public static final String CONTEXTUAL = "contextual";
public static final String IME_SWITCHER = "ime_switcher";
public static final String GRAVITY_SEPARATOR = ";";
public static final String BUTTON_SEPARATOR = ",";
public static final String SIZE_MOD_START = "[";
public static final String SIZE_MOD_END = "]";
public static final String KEY_CODE_START = "(";
public static final String KEY_IMAGE_DELIM = ":";
public static final String KEY_CODE_END = ")";
private static final String WEIGHT_SUFFIX = "W";
private static final String WEIGHT_CENTERED_SUFFIX = "WC";
private static final String ABSOLUTE_SUFFIX = "A";
private static final String ABSOLUTE_VERTICAL_CENTERED_SUFFIX = "C";
protected LayoutInflater mLayoutInflater;
protected LayoutInflater mLandscapeInflater;
protected FrameLayout mHorizontal;
protected FrameLayout mVertical;
@VisibleForTesting
SparseArray mButtonDispatchers;
private String mCurrentLayout;
private View mLastPortrait;
private View mLastLandscape;
private boolean mIsVertical;
private boolean mAlternativeOrder;
private OverviewProxyService mOverviewProxyService;
private int mNavBarMode = NAV_BAR_MODE_3BUTTON;
public NavigationBarInflaterView(Context context, AttributeSet attrs) {
super(context, attrs);
createInflaters();
mOverviewProxyService = Dependency.get(OverviewProxyService.class);
mNavBarMode = Dependency.get(NavigationModeController.class).addListener(this);
}
@VisibleForTesting
void createInflaters() {
mLayoutInflater = LayoutInflater.from(mContext);
Configuration landscape = new Configuration();
landscape.setTo(mContext.getResources().getConfiguration());
landscape.orientation = Configuration.ORIENTATION_LANDSCAPE;
mLandscapeInflater = LayoutInflater.from(mContext.createConfigurationContext(landscape));
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
inflateChildren();
clearViews();
inflateLayout(getDefaultLayout());
}
private void inflateChildren() {
removeAllViews();
mHorizontal = (FrameLayout) mLayoutInflater.inflate(R.layout.navigation_layout,
this /* root */, false /* attachToRoot */);
addView(mHorizontal);
mVertical = (FrameLayout) mLayoutInflater.inflate(R.layout.navigation_layout_vertical,
this /* root */, false /* attachToRoot */);
addView(mVertical);
updateAlternativeOrder();
}
protected String getDefaultLayout() {
final int defaultResource = QuickStepContract.isGesturalMode(mNavBarMode)
? R.string.config_navBarLayoutHandle
: mOverviewProxyService.shouldShowSwipeUpUI()
? R.string.config_navBarLayoutQuickstep
: R.string.config_navBarLayout;
return getContext().getString(defaultResource);
}
@Override
public void onNavigationModeChanged(int mode) {
mNavBarMode = mode;
}
@Override
protected void onDetachedFromWindow() {
Dependency.get(NavigationModeController.class).removeListener(this);
super.onDetachedFromWindow();
}
public void onLikelyDefaultLayoutChange() {
// Reevaluate new layout
final String newValue = getDefaultLayout();
if (!Objects.equals(mCurrentLayout, newValue)) {
clearViews();
inflateLayout(newValue);
}
}
public void setButtonDispatchers(SparseArray buttonDispatchers) {
mButtonDispatchers = buttonDispatchers;
for (int i = 0; i < buttonDispatchers.size(); i++) {
initiallyFill(buttonDispatchers.valueAt(i));
}
}
void updateButtonDispatchersCurrentView() {
if (mButtonDispatchers != null) {
View view = mIsVertical ? mVertical : mHorizontal;
for (int i = 0; i < mButtonDispatchers.size(); i++) {
final ButtonDispatcher dispatcher = mButtonDispatchers.valueAt(i);
dispatcher.setCurrentView(view);
}
}
}
void setVertical(boolean vertical) {
if (vertical != mIsVertical) {
mIsVertical = vertical;
}
}
void setAlternativeOrder(boolean alternativeOrder) {
if (alternativeOrder != mAlternativeOrder) {
mAlternativeOrder = alternativeOrder;
updateAlternativeOrder();
}
}
private void updateAlternativeOrder() {
updateAlternativeOrder(mHorizontal.findViewById(R.id.ends_group));
updateAlternativeOrder(mHorizontal.findViewById(R.id.center_group));
updateAlternativeOrder(mVertical.findViewById(R.id.ends_group));
updateAlternativeOrder(mVertical.findViewById(R.id.center_group));
}
private void updateAlternativeOrder(View v) {
if (v instanceof ReverseLinearLayout) {
((ReverseLinearLayout) v).setAlternativeOrder(mAlternativeOrder);
}
}
private void initiallyFill(ButtonDispatcher buttonDispatcher) {
addAll(buttonDispatcher, mHorizontal.findViewById(R.id.ends_group));
addAll(buttonDispatcher, mHorizontal.findViewById(R.id.center_group));
addAll(buttonDispatcher, mVertical.findViewById(R.id.ends_group));
addAll(buttonDispatcher, mVertical.findViewById(R.id.center_group));
}
private void addAll(ButtonDispatcher buttonDispatcher, ViewGroup parent) {
for (int i = 0; i < parent.getChildCount(); i++) {
// Need to manually search for each id, just in case each group has more than one
// of a single id. It probably mostly a waste of time, but shouldn't take long
// and will only happen once.
if (parent.getChildAt(i).getId() == buttonDispatcher.getId()) {
buttonDispatcher.addView(parent.getChildAt(i));
}
if (parent.getChildAt(i) instanceof ViewGroup) {
addAll(buttonDispatcher, (ViewGroup) parent.getChildAt(i));
}
}
}
protected void inflateLayout(String newLayout) {
mCurrentLayout = newLayout;
if (newLayout == null) {
newLayout = getDefaultLayout();
}
String[] sets = newLayout.split(GRAVITY_SEPARATOR, 3);
if (sets.length != 3) {
Log.d(TAG, "Invalid layout.");
newLayout = getDefaultLayout();
sets = newLayout.split(GRAVITY_SEPARATOR, 3);
}
String[] start = sets[0].split(BUTTON_SEPARATOR);
String[] center = sets[1].split(BUTTON_SEPARATOR);
String[] end = sets[2].split(BUTTON_SEPARATOR);
// Inflate these in start to end order or accessibility traversal will be messed up.
inflateButtons(start, mHorizontal.findViewById(R.id.ends_group),
false /* landscape */, true /* start */);
inflateButtons(start, mVertical.findViewById(R.id.ends_group),
true /* landscape */, true /* start */);
inflateButtons(center, mHorizontal.findViewById(R.id.center_group),
false /* landscape */, false /* start */);
inflateButtons(center, mVertical.findViewById(R.id.center_group),
true /* landscape */, false /* start */);
addGravitySpacer(mHorizontal.findViewById(R.id.ends_group));
addGravitySpacer(mVertical.findViewById(R.id.ends_group));
inflateButtons(end, mHorizontal.findViewById(R.id.ends_group),
false /* landscape */, false /* start */);
inflateButtons(end, mVertical.findViewById(R.id.ends_group),
true /* landscape */, false /* start */);
updateButtonDispatchersCurrentView();
}
private void addGravitySpacer(LinearLayout layout) {
layout.addView(new Space(mContext), new LinearLayout.LayoutParams(0, 0, 1));
}
private void inflateButtons(String[] buttons, ViewGroup parent, boolean landscape,
boolean start) {
for (int i = 0; i < buttons.length; i++) {
inflateButton(buttons[i], parent, landscape, start);
}
}
private ViewGroup.LayoutParams copy(ViewGroup.LayoutParams layoutParams) {
if (layoutParams instanceof LinearLayout.LayoutParams) {
return new LinearLayout.LayoutParams(layoutParams.width, layoutParams.height,
((LinearLayout.LayoutParams) layoutParams).weight);
}
return new LayoutParams(layoutParams.width, layoutParams.height);
}
@Nullable
protected View inflateButton(String buttonSpec, ViewGroup parent, boolean landscape,
boolean start) {
LayoutInflater inflater = landscape ? mLandscapeInflater : mLayoutInflater;
View v = createView(buttonSpec, parent, inflater);
if (v == null) return null;
v = applySize(v, buttonSpec, landscape, start);
parent.addView(v);
addToDispatchers(v);
View lastView = landscape ? mLastLandscape : mLastPortrait;
View accessibilityView = v;
if (v instanceof ReverseRelativeLayout) {
accessibilityView = ((ReverseRelativeLayout) v).getChildAt(0);
}
if (lastView != null) {
accessibilityView.setAccessibilityTraversalAfter(lastView.getId());
}
if (landscape) {
mLastLandscape = accessibilityView;
} else {
mLastPortrait = accessibilityView;
}
return v;
}
private View applySize(View v, String buttonSpec, boolean landscape, boolean start) {
String sizeStr = extractSize(buttonSpec);
if (sizeStr == null) return v;
if (sizeStr.contains(WEIGHT_SUFFIX) || sizeStr.contains(ABSOLUTE_SUFFIX)) {
// To support gravity, wrap in RelativeLayout and apply gravity to it.
// Children wanting to use gravity must be smaller then the frame.
ReverseRelativeLayout frame = new ReverseRelativeLayout(mContext);
LayoutParams childParams = new LayoutParams(v.getLayoutParams());
// Compute gravity to apply
int gravity = (landscape) ? (start ? Gravity.TOP : Gravity.BOTTOM)
: (start ? Gravity.START : Gravity.END);
if (sizeStr.endsWith(WEIGHT_CENTERED_SUFFIX)) {
gravity = Gravity.CENTER;
} else if (sizeStr.endsWith(ABSOLUTE_VERTICAL_CENTERED_SUFFIX)) {
gravity = Gravity.CENTER_VERTICAL;
}
// Set default gravity, flipped if needed in reversed layouts (270 RTL and 90 LTR)
frame.setDefaultGravity(gravity);
frame.setGravity(gravity); // Apply gravity to root
frame.addView(v, childParams);
if (sizeStr.contains(WEIGHT_SUFFIX)) {
// Use weighting to set the width of the frame
float weight = Float.parseFloat(
sizeStr.substring(0, sizeStr.indexOf(WEIGHT_SUFFIX)));
frame.setLayoutParams(new LinearLayout.LayoutParams(0, MATCH_PARENT, weight));
} else {
int width = (int) convertDpToPx(mContext,
Float.parseFloat(sizeStr.substring(0, sizeStr.indexOf(ABSOLUTE_SUFFIX))));
frame.setLayoutParams(new LinearLayout.LayoutParams(width, MATCH_PARENT));
}
// Ensure ripples can be drawn outside bounds
frame.setClipChildren(false);
frame.setClipToPadding(false);
return frame;
}
float size = Float.parseFloat(sizeStr);
ViewGroup.LayoutParams params = v.getLayoutParams();
params.width = (int) (params.width * size);
return v;
}
View createView(String buttonSpec, ViewGroup parent, LayoutInflater inflater) {
View v = null;
String button = extractButton(buttonSpec);
if (LEFT.equals(button)) {
button = extractButton(NAVSPACE);
} else if (RIGHT.equals(button)) {
button = extractButton(MENU_IME_ROTATE);
}
if (HOME.equals(button)) {
v = inflater.inflate(R.layout.home, parent, false);
} else if (BACK.equals(button)) {
v = inflater.inflate(R.layout.back, parent, false);
} else if (RECENT.equals(button)) {
v = inflater.inflate(R.layout.recent_apps, parent, false);
} else if (MENU_IME_ROTATE.equals(button)) {
v = inflater.inflate(R.layout.menu_ime, parent, false);
} else if (NAVSPACE.equals(button)) {
v = inflater.inflate(R.layout.nav_key_space, parent, false);
} else if (CLIPBOARD.equals(button)) {
v = inflater.inflate(R.layout.clipboard, parent, false);
} else if (CONTEXTUAL.equals(button)) {
v = inflater.inflate(R.layout.contextual, parent, false);
} else if (HOME_HANDLE.equals(button)) {
v = inflater.inflate(R.layout.home_handle, parent, false);
} else if (IME_SWITCHER.equals(button)) {
v = inflater.inflate(R.layout.ime_switcher, parent, false);
} else if (button.startsWith(KEY)) {
String uri = extractImage(button);
int code = extractKeycode(button);
v = inflater.inflate(R.layout.custom_key, parent, false);
((KeyButtonView) v).setCode(code);
if (uri != null) {
if (uri.contains(":")) {
((KeyButtonView) v).loadAsync(Icon.createWithContentUri(uri));
} else if (uri.contains("/")) {
int index = uri.indexOf('/');
String pkg = uri.substring(0, index);
int id = Integer.parseInt(uri.substring(index + 1));
((KeyButtonView) v).loadAsync(Icon.createWithResource(pkg, id));
}
}
}
return v;
}
public static String extractImage(String buttonSpec) {
if (!buttonSpec.contains(KEY_IMAGE_DELIM)) {
return null;
}
final int start = buttonSpec.indexOf(KEY_IMAGE_DELIM);
String subStr = buttonSpec.substring(start + 1, buttonSpec.indexOf(KEY_CODE_END));
return subStr;
}
public static int extractKeycode(String buttonSpec) {
if (!buttonSpec.contains(KEY_CODE_START)) {
return 1;
}
final int start = buttonSpec.indexOf(KEY_CODE_START);
String subStr = buttonSpec.substring(start + 1, buttonSpec.indexOf(KEY_IMAGE_DELIM));
return Integer.parseInt(subStr);
}
public static String extractSize(String buttonSpec) {
if (!buttonSpec.contains(SIZE_MOD_START)) {
return null;
}
final int sizeStart = buttonSpec.indexOf(SIZE_MOD_START);
return buttonSpec.substring(sizeStart + 1, buttonSpec.indexOf(SIZE_MOD_END));
}
public static String extractButton(String buttonSpec) {
if (!buttonSpec.contains(SIZE_MOD_START)) {
return buttonSpec;
}
return buttonSpec.substring(0, buttonSpec.indexOf(SIZE_MOD_START));
}
private void addToDispatchers(View v) {
if (mButtonDispatchers != null) {
final int indexOfKey = mButtonDispatchers.indexOfKey(v.getId());
if (indexOfKey >= 0) {
mButtonDispatchers.valueAt(indexOfKey).addView(v);
}
if (v instanceof ViewGroup) {
final ViewGroup viewGroup = (ViewGroup)v;
final int N = viewGroup.getChildCount();
for (int i = 0; i < N; i++) {
addToDispatchers(viewGroup.getChildAt(i));
}
}
}
}
private void clearViews() {
if (mButtonDispatchers != null) {
for (int i = 0; i < mButtonDispatchers.size(); i++) {
mButtonDispatchers.valueAt(i).clear();
}
}
clearAllChildren(mHorizontal.findViewById(R.id.nav_buttons));
clearAllChildren(mVertical.findViewById(R.id.nav_buttons));
}
private void clearAllChildren(ViewGroup group) {
for (int i = 0; i < group.getChildCount(); i++) {
((ViewGroup) group.getChildAt(i)).removeAllViews();
}
}
private static float convertDpToPx(Context context, float dp) {
return dp * context.getResources().getDisplayMetrics().density;
}
public void dump(PrintWriter pw) {
pw.println("NavigationBarInflaterView");
pw.println(" mCurrentLayout: " + mCurrentLayout);
}
}
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