com.android.tools.idea.run.DeviceStateAtLaunch.java Source code

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Here is the source code for com.android.tools.idea.run.DeviceStateAtLaunch.java

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/*
 * 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.tools.idea.run;

import com.android.ddmlib.IDevice;
import com.google.common.collect.Sets;
import org.jetbrains.annotations.NotNull;

import java.util.Collection;
import java.util.Set;

/** A simple container that maintains the state of devices at the time of a particular launch. */
public class DeviceStateAtLaunch {
    /** devices used in a particular launch. */
    private final Set<String> myDevicesUsedInLaunch;

    /** all the devices available at the time of the launch. */
    private final Set<String> myDevicesAvailableAtLaunch;

    public DeviceStateAtLaunch(@NotNull Collection<IDevice> usedDevices, @NotNull Collection<IDevice> allDevices) {
        myDevicesUsedInLaunch = serialize(usedDevices);
        myDevicesAvailableAtLaunch = serialize(allDevices);
    }

    /** Filters the given set of devices by only selecting those devices that were actually used in this launch. */
    public Collection<IDevice> filterByUsed(@NotNull Collection<IDevice> devices) {
        Set<IDevice> used = Sets.newHashSetWithExpectedSize(myDevicesUsedInLaunch.size());

        for (IDevice d : devices) {
            if (myDevicesUsedInLaunch.contains(d.getSerialNumber())) {
                used.add(d);
            }
        }

        return used;
    }

    /** Whether the devices available now were the same set of devices available at the time of this launch. */
    public boolean matchesCurrentAvailableDevices(@NotNull Collection<IDevice> devices) {
        if (myDevicesAvailableAtLaunch.size() != devices.size()) {
            return false;
        }

        for (IDevice d : devices) {
            if (!myDevicesAvailableAtLaunch.contains(d.getSerialNumber())) {
                return false;
            }
        }

        return true;
    }

    /** Whether the given device was used in this launch. */
    public boolean usedDevice(@NotNull IDevice device) {
        return myDevicesUsedInLaunch.contains(device.getSerialNumber());
    }

    private static Set<String> serialize(Collection<IDevice> usedDevices) {
        Set<String> s = Sets.newHashSetWithExpectedSize(usedDevices.size());
        for (IDevice d : usedDevices) {
            s.add(d.getSerialNumber());
        }
        return s;
    }
}