packages/SystemUI/src/com/android/systemui/recents/RecentsDebugFlags.java

/*
 * Copyright (C) 2014 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.recents;

import android.content.Context;

import com.android.systemui.recents.events.EventBus;
import com.android.systemui.recents.events.activity.DebugFlagsChangedEvent;
import com.android.systemui.recents.misc.SystemServicesProxy;
import com.android.systemui.tuner.TunerService;

/**
 * Tunable debug flags
 */
public class RecentsDebugFlags implements TunerService.Tunable {

    public static class Static {
        // Enables debug drawing for the transition thumbnail
        public static final boolean EnableTransitionThumbnailDebugMode = false;
        // This enables the search bar integration
        public static final boolean EnableSearchBar = false;
        // This disables the bitmap and icon caches
        public static final boolean DisableBackgroundCache = false;
        // Enables the task affiliations
        public static final boolean EnableAffiliatedTaskGroups = true;
        // Enables the history
        public static final boolean EnableHistory = false;
        // Overrides the Tuner flags and enables the fast toggle and timeout
        public static final boolean EnableFastToggleTimeoutOverride = true;

        // Enables us to create mock recents tasks
        public static final boolean EnableMockTasks = false;
        // Defines the number of mock recents packages to create
        public static final int MockTasksPackageCount = 3;
        // Defines the number of mock recents tasks to create
        public static final int MockTaskCount = 100;
        // Enables the simulated task affiliations
        public static final boolean EnableMockTaskGroups = false;
        // Defines the number of mock task affiliations per group
        public static final int MockTaskGroupsTaskCount = 12;
    }

    private static final String KEY_DISABLE_FAST_TOGGLE = "overview_disable_fast_toggle_via_button";

    private boolean mDisableFastToggleRecents;

    /**
     * We read the prefs once when we start the activity, then update them as the tuner changes
     * the flags.
     */
    public RecentsDebugFlags(Context context) {
        // Register all our flags, this will also call onTuningChanged() for each key, which will
        // initialize the current state of each flag
        TunerService.get(context).addTunable(this, KEY_DISABLE_FAST_TOGGLE);
    }

    /**
     * @return whether we are enabling fast toggling.
     */
    public boolean isFastToggleRecentsEnabled() {
        // These checks EnableFastToggleTimeoutOverride
        SystemServicesProxy ssp = Recents.getSystemServices();
        if (mDisableFastToggleRecents || ssp.hasFreeformWorkspaceSupport() || ssp.hasDockedTask()
                || ssp.isTouchExplorationEnabled()) {
            return false;
        }
        if (Static.EnableFastToggleTimeoutOverride) {
            return true;
        }
        return true;
    }

    @Override
    public void onTuningChanged(String key, String newValue) {
        switch (key) {
            case KEY_DISABLE_FAST_TOGGLE:
                mDisableFastToggleRecents = (newValue != null) &&
                        (Integer.parseInt(newValue) != 0);
                break;
        }
        EventBus.getDefault().send(new DebugFlagsChangedEvent());
    }
}