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Diffstat (limited to 'java/com/android/incallui/incall/impl/MappedButtonConfig.java')
-rw-r--r-- | java/com/android/incallui/incall/impl/MappedButtonConfig.java | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/java/com/android/incallui/incall/impl/MappedButtonConfig.java b/java/com/android/incallui/incall/impl/MappedButtonConfig.java new file mode 100644 index 000000000..ecdb5dfea --- /dev/null +++ b/java/com/android/incallui/incall/impl/MappedButtonConfig.java @@ -0,0 +1,193 @@ +/* + * 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.incallui.incall.impl; + +import android.support.annotation.NonNull; +import android.support.v4.util.ArrayMap; +import android.util.ArraySet; +import com.android.dialer.common.Assert; +import com.android.incallui.incall.protocol.InCallButtonIds; +import com.android.incallui.incall.protocol.InCallButtonIdsExtension; + +import java.util.ArrayList; +import java.util.Collections; +import java.util.Comparator; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; +import javax.annotation.concurrent.Immutable; + +/** + * Determines logical button slot and ordering based on a provided mapping. + * + * <p>The provided mapping is declared with the following pieces of information: key, the {@link + * InCallButtonIds} for which the mapping applies; {@link MappingInfo#getSlot()}, the arbitrarily + * indexed slot into which the InCallButtonId desires to be placed; {@link + * MappingInfo#getSlotOrder()}, the slotOrder, used to choose the correct InCallButtonId when + * multiple desire to be placed in the same slot; and {@link MappingInfo#getConflictOrder()}, the + * conflictOrder, used to determine the overall order for InCallButtonIds that weren't chosen for + * their desired slot. + */ +@Immutable +final class MappedButtonConfig { + + @NonNull private final Map<Integer, MappingInfo> mapping; + @NonNull private final List<Integer> orderedMappedSlots; + + /** + * Creates this MappedButtonConfig with the given mapping of {@link InCallButtonIds} to their + * corresponding slots and order. + * + * @param mapping the mapping. + */ + public MappedButtonConfig(@NonNull Map<Integer, MappingInfo> mapping) { + this.mapping = new ArrayMap<>(); + this.mapping.putAll(Assert.isNotNull(mapping)); + this.orderedMappedSlots = findOrderedMappedSlots(); + } + + private List<Integer> findOrderedMappedSlots() { + Set<Integer> slots = new ArraySet<>(); + for (Entry<Integer, MappingInfo> entry : mapping.entrySet()) { + slots.add(entry.getValue().getSlot()); + } + List<Integer> orderedSlots = new ArrayList<>(slots); + Collections.sort(orderedSlots); + return orderedSlots; + } + + /** Returns an immutable list of the slots for which this class has button mapping. */ + @NonNull + public List<Integer> getOrderedMappedSlots() { + if (mapping.isEmpty()) { + return Collections.emptyList(); + } + return Collections.unmodifiableList(orderedMappedSlots); + } + + /** + * Returns a list of {@link InCallButtonIds} that are configured to be placed in the given ui + * slot. The slot can be based from any index, as long as it matches the provided mapping. + */ + @NonNull + public List<Integer> getButtonsForSlot(int slot) { + List<Integer> buttons = new ArrayList<>(); + for (Entry<Integer, MappingInfo> entry : mapping.entrySet()) { + if (entry.getValue().getSlot() == slot) { + buttons.add(entry.getKey()); + } + } + return buttons; + } + + /** + * Returns a {@link Comparator} capable of ordering {@link InCallButtonIds} that are configured to + * be placed in the same slot. InCallButtonIds are sorted based on the natural ordering of {@link + * MappingInfo#getSlotOrder()}. + * + * <p>Note: the returned Comparator's compare method will throw an {@link + * IllegalArgumentException} if called with InCallButtonIds that have no configuration or are not + * to be placed in the same slot. + */ + @NonNull + public Comparator<Integer> getSlotComparator() { + return new Comparator<Integer>() { + @Override + public int compare(Integer lhs, Integer rhs) { + MappingInfo lhsInfo = lookupMappingInfo(lhs); + MappingInfo rhsInfo = lookupMappingInfo(rhs); + if (lhsInfo.getSlot() != rhsInfo.getSlot()) { + throw new IllegalArgumentException("lhs and rhs don't go in the same slot"); + } + return lhsInfo.getSlotOrder() - rhsInfo.getSlotOrder(); + } + }; + } + + /** + * Returns a {@link Comparator} capable of ordering {@link InCallButtonIds} by their conflict + * score. This comparator should be used when multiple InCallButtonIds could have been shown in + * the same slot. InCallButtonIds are sorted based on the natural ordering of {@link + * MappingInfo#getConflictOrder()}. + * + * <p>Note: the returned Comparator's compare method will throw an {@link + * IllegalArgumentException} if called with InCallButtonIds that have no configuration. + */ + @NonNull + public Comparator<Integer> getConflictComparator() { + return new Comparator<Integer>() { + @Override + public int compare(Integer lhs, Integer rhs) { + MappingInfo lhsInfo = lookupMappingInfo(lhs); + MappingInfo rhsInfo = lookupMappingInfo(rhs); + return lhsInfo.getConflictOrder() - rhsInfo.getConflictOrder(); + } + }; + } + + @NonNull + private MappingInfo lookupMappingInfo(@InCallButtonIds int button) { + MappingInfo info = mapping.get(button); + if (info == null) { + throw new IllegalArgumentException( + "Unknown InCallButtonId: " + InCallButtonIdsExtension.toString(button)); + } + return info; + } + + /** Holds information about button mapping. */ + + abstract static class MappingInfo { + + /** The Ui slot into which a given button desires to be placed. */ + public abstract int getSlot(); + + /** + * Returns an integer used to determine which button is chosen for a slot when multiple buttons + * desire to be placed in the same slot. Follows from the natural ordering of integers, i.e. a + * lower slotOrder results in the button being chosen. + */ + public abstract int getSlotOrder(); + + /** + * Returns an integer used to determine the order in which buttons that weren't chosen for their + * desired slot are placed into the Ui. Follows from the natural ordering of integers, i.e. a + * lower conflictOrder results in the button being chosen. + */ + public abstract int getConflictOrder(); + + static Builder builder(int slot) { + return new AutoValue_MappedButtonConfig_MappingInfo.Builder() + .setSlot(slot) + .setSlotOrder(Integer.MAX_VALUE) + .setConflictOrder(Integer.MAX_VALUE); + } + + /** Class used to build instances of {@link MappingInfo}. */ + + abstract static class Builder { + public abstract Builder setSlot(int slot); + + public abstract Builder setSlotOrder(int slotOrder); + + public abstract Builder setConflictOrder(int conflictOrder); + + public abstract MappingInfo build(); + } + } +} |