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/*
* Copyright (C) 2016 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 static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_FOCUSED;
import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED;
import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent;
import android.annotation.SuppressLint;
import android.content.Context;
import android.support.annotation.IntDef;
import android.util.AttributeSet;
import android.util.Pair;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
import com.android.launcher3.util.TouchController;
import com.android.launcher3.views.BaseDragLayer;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* Base class for a View which shows a floating UI on top of the launcher UI.
*/
public abstract class AbstractFloatingView extends LinearLayout implements TouchController {
@IntDef(flag = true, value = {
TYPE_FOLDER,
TYPE_ACTION_POPUP,
TYPE_WIDGETS_BOTTOM_SHEET,
TYPE_WIDGET_RESIZE_FRAME,
TYPE_WIDGETS_FULL_SHEET,
TYPE_ON_BOARD_POPUP,
TYPE_QUICKSTEP_PREVIEW,
TYPE_TASK_MENU,
TYPE_OPTIONS_POPUP
})
@Retention(RetentionPolicy.SOURCE)
public @interface FloatingViewType {}
public static final int TYPE_FOLDER = 1 << 0;
public static final int TYPE_ACTION_POPUP = 1 << 1;
public static final int TYPE_WIDGETS_BOTTOM_SHEET = 1 << 2;
public static final int TYPE_WIDGET_RESIZE_FRAME = 1 << 3;
public static final int TYPE_WIDGETS_FULL_SHEET = 1 << 4;
public static final int TYPE_ON_BOARD_POPUP = 1 << 5;
// Popups related to quickstep UI
public static final int TYPE_QUICKSTEP_PREVIEW = 1 << 6;
public static final int TYPE_TASK_MENU = 1 << 7;
public static final int TYPE_OPTIONS_POPUP = 1 << 8;
public static final int TYPE_ALL = TYPE_FOLDER | TYPE_ACTION_POPUP
| TYPE_WIDGETS_BOTTOM_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_WIDGETS_FULL_SHEET
| TYPE_QUICKSTEP_PREVIEW | TYPE_ON_BOARD_POPUP | TYPE_TASK_MENU | TYPE_OPTIONS_POPUP;
// Type of popups which should be kept open during launcher rebind
public static final int TYPE_REBIND_SAFE = TYPE_WIDGETS_FULL_SHEET
| TYPE_QUICKSTEP_PREVIEW | TYPE_ON_BOARD_POPUP;
// Usually we show the back button when a floating view is open. Instead, hide for these types.
public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP;
protected boolean mIsOpen;
public AbstractFloatingView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public AbstractFloatingView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
/**
* We need to handle touch events to prevent them from falling through to the workspace below.
*/
@SuppressLint("ClickableViewAccessibility")
@Override
public boolean onTouchEvent(MotionEvent ev) {
return true;
}
public final void close(boolean animate) {
animate &= !Utilities.isPowerSaverPreventingAnimation(getContext());
if (mIsOpen) {
BaseActivity.fromContext(getContext()).getUserEventDispatcher()
.resetElapsedContainerMillis("container closed");
}
handleClose(animate);
mIsOpen = false;
}
protected abstract void handleClose(boolean animate);
public abstract void logActionCommand(int command);
public final boolean isOpen() {
return mIsOpen;
}
protected void onWidgetsBound() {
}
protected abstract boolean isOfType(@FloatingViewType int type);
/** @return Whether the back is consumed. If false, Launcher will handle the back as well. */
public boolean onBackPressed() {
logActionCommand(Action.Command.BACK);
close(true);
return true;
}
@Override
public boolean onControllerTouchEvent(MotionEvent ev) {
return false;
}
protected void announceAccessibilityChanges() {
Pair<View, String> targetInfo = getAccessibilityTarget();
if (targetInfo == null || !isAccessibilityEnabled(getContext())) {
return;
}
sendCustomAccessibilityEvent(
targetInfo.first, TYPE_WINDOW_STATE_CHANGED, targetInfo.second);
if (mIsOpen) {
sendAccessibilityEvent(TYPE_VIEW_FOCUSED);
}
BaseDraggingActivity.fromContext(getContext()).getDragLayer()
.sendAccessibilityEvent(TYPE_WINDOW_CONTENT_CHANGED);
}
protected Pair<View, String> getAccessibilityTarget() {
return null;
}
protected static <T extends AbstractFloatingView> T getOpenView(
BaseDraggingActivity activity, @FloatingViewType int type) {
BaseDragLayer dragLayer = activity.getDragLayer();
// Iterate in reverse order. AbstractFloatingView is added later to the dragLayer,
// and will be one of the last views.
for (int i = dragLayer.getChildCount() - 1; i >= 0; i--) {
View child = dragLayer.getChildAt(i);
if (child instanceof AbstractFloatingView) {
AbstractFloatingView view = (AbstractFloatingView) child;
if (view.isOfType(type) && view.isOpen()) {
return (T) view;
}
}
}
return null;
}
public static void closeOpenContainer(BaseDraggingActivity activity,
@FloatingViewType int type) {
AbstractFloatingView view = getOpenView(activity, type);
if (view != null) {
view.close(true);
}
}
public static void closeOpenViews(BaseDraggingActivity activity, boolean animate,
@FloatingViewType int type) {
BaseDragLayer dragLayer = activity.getDragLayer();
// Iterate in reverse order. AbstractFloatingView is added later to the dragLayer,
// and will be one of the last views.
for (int i = dragLayer.getChildCount() - 1; i >= 0; i--) {
View child = dragLayer.getChildAt(i);
if (child instanceof AbstractFloatingView) {
AbstractFloatingView abs = (AbstractFloatingView) child;
if (abs.isOfType(type)) {
abs.close(animate);
}
}
}
}
public static void closeAllOpenViews(BaseDraggingActivity activity, boolean animate) {
closeOpenViews(activity, animate, TYPE_ALL);
activity.finishAutoCancelActionMode();
}
public static void closeAllOpenViews(BaseDraggingActivity activity) {
closeAllOpenViews(activity, true);
}
public static AbstractFloatingView getTopOpenView(BaseDraggingActivity activity) {
return getTopOpenViewWithType(activity, TYPE_ALL);
}
public static AbstractFloatingView getTopOpenViewWithType(BaseDraggingActivity activity,
@FloatingViewType int type) {
return getOpenView(activity, type);
}
}
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