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/*
* Copyright (C) 2017 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.View.IMPORTANT_FOR_ACCESSIBILITY_AUTO;
import static android.view.View.IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
import android.view.View;
import com.android.launcher3.states.AllAppsState;
import com.android.launcher3.states.OverviewState;
import com.android.launcher3.states.SpringLoadedState;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
import java.util.Arrays;
/**
* Base state for various states used for the Launcher
*/
public class LauncherState {
protected static final int FLAG_SHOW_SCRIM = 1 << 0;
protected static final int FLAG_MULTI_PAGE = 1 << 1;
protected static final int FLAG_HIDE_HOTSEAT = 1 << 2;
protected static final int FLAG_DISABLE_ACCESSIBILITY = 1 << 3;
protected static final int FLAG_DO_NOT_RESTORE = 1 << 4;
protected static final int FLAG_HAS_SPRING = 1 << 5;
private static final LauncherState[] sAllStates = new LauncherState[4];
public static final LauncherState NORMAL = new LauncherState(0, ContainerType.WORKSPACE,
0, 1f, FLAG_DO_NOT_RESTORE);
public static final LauncherState ALL_APPS = new AllAppsState(1);
public static final LauncherState SPRING_LOADED = new SpringLoadedState(2);
public static final LauncherState OVERVIEW = new OverviewState(3);
public final int ordinal;
/**
* Used for containerType in {@link com.android.launcher3.logging.UserEventDispatcher}
*/
public final int containerType;
/**
* True if the state can be persisted across activity restarts.
*/
public final boolean doNotRestore;
/**
* True if workspace has multiple pages visible.
*/
public final boolean hasMultipleVisiblePages;
/**
* Accessibility flag for workspace and its pages.
* @see android.view.View#setImportantForAccessibility(int)
*/
public final int workspaceAccessibilityFlag;
/**
* Properties related to state transition animation
*
* @see WorkspaceStateTransitionAnimation
*/
public final boolean hasScrim;
public final boolean hideHotseat;
public final int transitionDuration;
/**
* Fraction shift in the vertical translation UI and related properties
*
* @see com.android.launcher3.allapps.AllAppsTransitionController
*/
public final float verticalProgress;
public final boolean hasVerticalSpring;
public LauncherState(int id, int containerType, int transitionDuration, float verticalProgress,
int flags) {
this.containerType = containerType;
this.transitionDuration = transitionDuration;
this.hasScrim = (flags & FLAG_SHOW_SCRIM) != 0;
this.hasMultipleVisiblePages = (flags & FLAG_MULTI_PAGE) != 0;
this.hideHotseat = (flags & FLAG_HIDE_HOTSEAT) != 0;
this.workspaceAccessibilityFlag = (flags & FLAG_DISABLE_ACCESSIBILITY) != 0
? IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS
: IMPORTANT_FOR_ACCESSIBILITY_AUTO;
this.doNotRestore = (flags & FLAG_DO_NOT_RESTORE) != 0;
this.verticalProgress = verticalProgress;
this.hasVerticalSpring = (flags & FLAG_HAS_SPRING) != 0;
this.ordinal = id;
sAllStates[id] = this;
}
public static LauncherState[] values() {
return Arrays.copyOf(sAllStates, sAllStates.length);
}
public float[] getWorkspaceScaleAndTranslation(Launcher launcher) {
return new float[] {1, 0};
}
public void onStateEnabled(Launcher launcher) {
dispatchWindowStateChanged(launcher);
}
public void onStateDisabled(Launcher launcher) { }
public View getFinalFocus(Launcher launcher) {
return launcher.getWorkspace();
}
public String getDescription(Launcher launcher) {
return launcher.getWorkspace().getCurrentPageDescription();
}
protected static void dispatchWindowStateChanged(Launcher launcher) {
launcher.getWindow().getDecorView().sendAccessibilityEvent(TYPE_WINDOW_STATE_CHANGED);
}
}
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