/* * 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 android.support.transition; import android.view.View; import java.util.HashMap; import java.util.Map; /** * Data structure which holds cached values for the transition. * The view field is the target which all of the values pertain to. * The values field is a map which holds information for fields * according to names selected by the transitions. These names should * be unique to avoid clobbering values stored by other transitions, * such as the convention project:transition_name:property_name. For * example, the platform might store a property "alpha" in a transition * "Fader" as "android:fader:alpha". * *

These values are cached during the * {@link android.support.transition.Transition#captureStartValues(TransitionValues)} * capture} phases of a scene change, once when the start values are captured * and again when the end values are captured. These start/end values are then * passed into the transitions via the * for {@link android.support.transition.Transition#createAnimator(android.view.ViewGroup, * TransitionValues, TransitionValues)} method.

*/ public class TransitionValues { /** * The set of values tracked by transitions for this scene */ public final Map values = new HashMap<>(); /** * The View with these values */ public View view; @Override public boolean equals(Object other) { if (other instanceof TransitionValues) { if (view == ((TransitionValues) other).view) { if (values.equals(((TransitionValues) other).values)) { return true; } } } return false; } @Override public int hashCode() { return 31 * view.hashCode() + values.hashCode(); } @Override public String toString() { String returnValue = "TransitionValues@" + Integer.toHexString(hashCode()) + ":\n"; returnValue += " view = " + view + "\n"; returnValue += " values:"; for (String s : values.keySet()) { returnValue += " " + s + ": " + values.get(s) + "\n"; } return returnValue; } }