| /* |
| * Copyright (C) 2008-2009 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 android.gesture; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * The abstract class of a gesture learner |
| */ |
| abstract class Learner { |
| private final ArrayList<Instance> mInstances = new ArrayList<Instance>(); |
| |
| /** |
| * Add an instance to the learner |
| * |
| * @param instance |
| */ |
| void addInstance(Instance instance) { |
| mInstances.add(instance); |
| } |
| |
| /** |
| * Retrieve all the instances |
| * |
| * @return instances |
| */ |
| ArrayList<Instance> getInstances() { |
| return mInstances; |
| } |
| |
| /** |
| * Remove an instance based on its id |
| * |
| * @param id |
| */ |
| void removeInstance(long id) { |
| ArrayList<Instance> instances = mInstances; |
| int count = instances.size(); |
| for (int i = 0; i < count; i++) { |
| Instance instance = instances.get(i); |
| if (id == instance.id) { |
| instances.remove(instance); |
| return; |
| } |
| } |
| } |
| |
| /** |
| * Remove all the instances of a category |
| * |
| * @param name the category name |
| */ |
| void removeInstances(String name) { |
| final ArrayList<Instance> toDelete = new ArrayList<Instance>(); |
| final ArrayList<Instance> instances = mInstances; |
| final int count = instances.size(); |
| |
| for (int i = 0; i < count; i++) { |
| final Instance instance = instances.get(i); |
| // the label can be null, as specified in Instance |
| if ((instance.label == null && name == null) |
| || (instance.label != null && instance.label.equals(name))) { |
| toDelete.add(instance); |
| } |
| } |
| instances.removeAll(toDelete); |
| } |
| |
| abstract ArrayList<Prediction> classify(int sequenceType, int orientationType, float[] vector); |
| } |