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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 android.content.Context;
import android.support.annotation.IntDef;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
import com.android.launcher3.dragndrop.DragLayer;
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 {
@IntDef(flag = true, value = {TYPE_FOLDER, TYPE_DEEPSHORTCUT_CONTAINER})
@Retention(RetentionPolicy.SOURCE)
public @interface FloatingViewType {}
public static final int TYPE_FOLDER = 1 << 0;
public static final int TYPE_DEEPSHORTCUT_CONTAINER = 1 << 1;
protected boolean mIsOpen;
public AbstractFloatingView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public AbstractFloatingView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
public final void close(boolean animate) {
animate &= !Utilities.isPowerSaverOn(getContext());
handleClose(animate);
Launcher.getLauncher(getContext()).getUserEventDispatcher().resetElapsedContainerMillis();
}
protected abstract void handleClose(boolean animate);
/**
* If the view is current handling keyboard, return the active target, null otherwise
*/
public ExtendedEditText getActiveTextView() {
return null;
}
/**
* Any additional view (outside of this container) where touch should be allowed while this
* view is visible.
*/
public View getExtendedTouchView() {
return null;
}
public final boolean isOpen() {
return mIsOpen;
}
protected abstract boolean isOfType(@FloatingViewType int type);
protected static <T extends AbstractFloatingView> T getOpenView(
Launcher launcher, @FloatingViewType int type) {
DragLayer dragLayer = launcher.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;
}
protected static void closeOpenContainer(Launcher launcher, @FloatingViewType int type) {
AbstractFloatingView view = getOpenView(launcher, type);
if (view != null) {
view.close(true);
}
}
public static void closeAllOpenViews(Launcher launcher, boolean animate) {
DragLayer dragLayer = launcher.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) child).close(animate);
}
}
}
public static void closeAllOpenViews(Launcher launcher) {
closeAllOpenViews(launcher, true);
}
public static AbstractFloatingView getTopOpenView(Launcher launcher) {
return getOpenView(launcher, TYPE_FOLDER | TYPE_DEEPSHORTCUT_CONTAINER);
}
}
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