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Diffstat (limited to 'actionbarsherlock/src/com/actionbarsherlock/internal/nineoldandroids/animation/AnimatorSet.java')
| -rw-r--r-- | actionbarsherlock/src/com/actionbarsherlock/internal/nineoldandroids/animation/AnimatorSet.java | 1111 |
1 files changed, 0 insertions, 1111 deletions
diff --git a/actionbarsherlock/src/com/actionbarsherlock/internal/nineoldandroids/animation/AnimatorSet.java b/actionbarsherlock/src/com/actionbarsherlock/internal/nineoldandroids/animation/AnimatorSet.java deleted file mode 100644 index 3231080c4..000000000 --- a/actionbarsherlock/src/com/actionbarsherlock/internal/nineoldandroids/animation/AnimatorSet.java +++ /dev/null @@ -1,1111 +0,0 @@ -/* - * Copyright (C) 2010 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.actionbarsherlock.internal.nineoldandroids.animation; - -import java.util.ArrayList; -import java.util.Collection; -import java.util.HashMap; -import java.util.List; - -import android.view.animation.Interpolator; - -/** - * This class plays a set of {@link Animator} objects in the specified order. Animations - * can be set up to play together, in sequence, or after a specified delay. - * - * <p>There are two different approaches to adding animations to a <code>AnimatorSet</code>: - * either the {@link AnimatorSet#playTogether(Animator[]) playTogether()} or - * {@link AnimatorSet#playSequentially(Animator[]) playSequentially()} methods can be called to add - * a set of animations all at once, or the {@link AnimatorSet#play(Animator)} can be - * used in conjunction with methods in the {@link AnimatorSet.Builder Builder} - * class to add animations - * one by one.</p> - * - * <p>It is possible to set up a <code>AnimatorSet</code> with circular dependencies between - * its animations. For example, an animation a1 could be set up to start before animation a2, a2 - * before a3, and a3 before a1. The results of this configuration are undefined, but will typically - * result in none of the affected animations being played. Because of this (and because - * circular dependencies do not make logical sense anyway), circular dependencies - * should be avoided, and the dependency flow of animations should only be in one direction. - */ -@SuppressWarnings("unchecked") -public final class AnimatorSet extends Animator { - - /** - * Internal variables - * NOTE: This object implements the clone() method, making a deep copy of any referenced - * objects. As other non-trivial fields are added to this class, make sure to add logic - * to clone() to make deep copies of them. - */ - - /** - * Tracks animations currently being played, so that we know what to - * cancel or end when cancel() or end() is called on this AnimatorSet - */ - private ArrayList<Animator> mPlayingSet = new ArrayList<Animator>(); - - /** - * Contains all nodes, mapped to their respective Animators. When new - * dependency information is added for an Animator, we want to add it - * to a single node representing that Animator, not create a new Node - * if one already exists. - */ - private HashMap<Animator, Node> mNodeMap = new HashMap<Animator, Node>(); - - /** - * Set of all nodes created for this AnimatorSet. This list is used upon - * starting the set, and the nodes are placed in sorted order into the - * sortedNodes collection. - */ - private ArrayList<Node> mNodes = new ArrayList<Node>(); - - /** - * The sorted list of nodes. This is the order in which the animations will - * be played. The details about when exactly they will be played depend - * on the dependency relationships of the nodes. - */ - private ArrayList<Node> mSortedNodes = new ArrayList<Node>(); - - /** - * Flag indicating whether the nodes should be sorted prior to playing. This - * flag allows us to cache the previous sorted nodes so that if the sequence - * is replayed with no changes, it does not have to re-sort the nodes again. - */ - private boolean mNeedsSort = true; - - private AnimatorSetListener mSetListener = null; - - /** - * Flag indicating that the AnimatorSet has been manually - * terminated (by calling cancel() or end()). - * This flag is used to avoid starting other animations when currently-playing - * child animations of this AnimatorSet end. It also determines whether cancel/end - * notifications are sent out via the normal AnimatorSetListener mechanism. - */ - boolean mTerminated = false; - - /** - * Indicates whether an AnimatorSet has been start()'d, whether or - * not there is a nonzero startDelay. - */ - private boolean mStarted = false; - - // The amount of time in ms to delay starting the animation after start() is called - private long mStartDelay = 0; - - // Animator used for a nonzero startDelay - private ValueAnimator mDelayAnim = null; - - - // How long the child animations should last in ms. The default value is negative, which - // simply means that there is no duration set on the AnimatorSet. When a real duration is - // set, it is passed along to the child animations. - private long mDuration = -1; - - - /** - * Sets up this AnimatorSet to play all of the supplied animations at the same time. - * - * @param items The animations that will be started simultaneously. - */ - public void playTogether(Animator... items) { - if (items != null) { - mNeedsSort = true; - Builder builder = play(items[0]); - for (int i = 1; i < items.length; ++i) { - builder.with(items[i]); - } - } - } - - /** - * Sets up this AnimatorSet to play all of the supplied animations at the same time. - * - * @param items The animations that will be started simultaneously. - */ - public void playTogether(Collection<Animator> items) { - if (items != null && items.size() > 0) { - mNeedsSort = true; - Builder builder = null; - for (Animator anim : items) { - if (builder == null) { - builder = play(anim); - } else { - builder.with(anim); - } - } - } - } - - /** - * Sets up this AnimatorSet to play each of the supplied animations when the - * previous animation ends. - * - * @param items The animations that will be started one after another. - */ - public void playSequentially(Animator... items) { - if (items != null) { - mNeedsSort = true; - if (items.length == 1) { - play(items[0]); - } else { - for (int i = 0; i < items.length - 1; ++i) { - play(items[i]).before(items[i+1]); - } - } - } - } - - /** - * Sets up this AnimatorSet to play each of the supplied animations when the - * previous animation ends. - * - * @param items The animations that will be started one after another. - */ - public void playSequentially(List<Animator> items) { - if (items != null && items.size() > 0) { - mNeedsSort = true; - if (items.size() == 1) { - play(items.get(0)); - } else { - for (int i = 0; i < items.size() - 1; ++i) { - play(items.get(i)).before(items.get(i+1)); - } - } - } - } - - /** - * Returns the current list of child Animator objects controlled by this - * AnimatorSet. This is a copy of the internal list; modifications to the returned list - * will not affect the AnimatorSet, although changes to the underlying Animator objects - * will affect those objects being managed by the AnimatorSet. - * - * @return ArrayList<Animator> The list of child animations of this AnimatorSet. - */ - public ArrayList<Animator> getChildAnimations() { - ArrayList<Animator> childList = new ArrayList<Animator>(); - for (Node node : mNodes) { - childList.add(node.animation); - } - return childList; - } - - /** - * Sets the target object for all current {@link #getChildAnimations() child animations} - * of this AnimatorSet that take targets ({@link ObjectAnimator} and - * AnimatorSet). - * - * @param target The object being animated - */ - @Override - public void setTarget(Object target) { - for (Node node : mNodes) { - Animator animation = node.animation; - if (animation instanceof AnimatorSet) { - ((AnimatorSet)animation).setTarget(target); - } else if (animation instanceof ObjectAnimator) { - ((ObjectAnimator)animation).setTarget(target); - } - } - } - - /** - * Sets the TimeInterpolator for all current {@link #getChildAnimations() child animations} - * of this AnimatorSet. - * - * @param interpolator the interpolator to be used by each child animation of this AnimatorSet - */ - @Override - public void setInterpolator(/*Time*/Interpolator interpolator) { - for (Node node : mNodes) { - node.animation.setInterpolator(interpolator); - } - } - - /** - * This method creates a <code>Builder</code> object, which is used to - * set up playing constraints. This initial <code>play()</code> method - * tells the <code>Builder</code> the animation that is the dependency for - * the succeeding commands to the <code>Builder</code>. For example, - * calling <code>play(a1).with(a2)</code> sets up the AnimatorSet to play - * <code>a1</code> and <code>a2</code> at the same time, - * <code>play(a1).before(a2)</code> sets up the AnimatorSet to play - * <code>a1</code> first, followed by <code>a2</code>, and - * <code>play(a1).after(a2)</code> sets up the AnimatorSet to play - * <code>a2</code> first, followed by <code>a1</code>. - * - * <p>Note that <code>play()</code> is the only way to tell the - * <code>Builder</code> the animation upon which the dependency is created, - * so successive calls to the various functions in <code>Builder</code> - * will all refer to the initial parameter supplied in <code>play()</code> - * as the dependency of the other animations. For example, calling - * <code>play(a1).before(a2).before(a3)</code> will play both <code>a2</code> - * and <code>a3</code> when a1 ends; it does not set up a dependency between - * <code>a2</code> and <code>a3</code>.</p> - * - * @param anim The animation that is the dependency used in later calls to the - * methods in the returned <code>Builder</code> object. A null parameter will result - * in a null <code>Builder</code> return value. - * @return Builder The object that constructs the AnimatorSet based on the dependencies - * outlined in the calls to <code>play</code> and the other methods in the - * <code>Builder</code object. - */ - public Builder play(Animator anim) { - if (anim != null) { - mNeedsSort = true; - return new Builder(anim); - } - return null; - } - - /** - * {@inheritDoc} - * - * <p>Note that canceling a <code>AnimatorSet</code> also cancels all of the animations that it - * is responsible for.</p> - */ - @Override - public void cancel() { - mTerminated = true; - if (isStarted()) { - ArrayList<AnimatorListener> tmpListeners = null; - if (mListeners != null) { - tmpListeners = (ArrayList<AnimatorListener>) mListeners.clone(); - for (AnimatorListener listener : tmpListeners) { - listener.onAnimationCancel(this); - } - } - if (mDelayAnim != null && mDelayAnim.isRunning()) { - // If we're currently in the startDelay period, just cancel that animator and - // send out the end event to all listeners - mDelayAnim.cancel(); - } else if (mSortedNodes.size() > 0) { - for (Node node : mSortedNodes) { - node.animation.cancel(); - } - } - if (tmpListeners != null) { - for (AnimatorListener listener : tmpListeners) { - listener.onAnimationEnd(this); - } - } - mStarted = false; - } - } - - /** - * {@inheritDoc} - * - * <p>Note that ending a <code>AnimatorSet</code> also ends all of the animations that it is - * responsible for.</p> - */ - @Override - public void end() { - mTerminated = true; - if (isStarted()) { - if (mSortedNodes.size() != mNodes.size()) { - // hasn't been started yet - sort the nodes now, then end them - sortNodes(); - for (Node node : mSortedNodes) { - if (mSetListener == null) { - mSetListener = new AnimatorSetListener(this); - } - node.animation.addListener(mSetListener); - } - } - if (mDelayAnim != null) { - mDelayAnim.cancel(); - } - if (mSortedNodes.size() > 0) { - for (Node node : mSortedNodes) { - node.animation.end(); - } - } - if (mListeners != null) { - ArrayList<AnimatorListener> tmpListeners = - (ArrayList<AnimatorListener>) mListeners.clone(); - for (AnimatorListener listener : tmpListeners) { - listener.onAnimationEnd(this); - } - } - mStarted = false; - } - } - - /** - * Returns true if any of the child animations of this AnimatorSet have been started and have - * not yet ended. - * @return Whether this AnimatorSet has been started and has not yet ended. - */ - @Override - public boolean isRunning() { - for (Node node : mNodes) { - if (node.animation.isRunning()) { - return true; - } - } - return false; - } - - @Override - public boolean isStarted() { - return mStarted; - } - - /** - * The amount of time, in milliseconds, to delay starting the animation after - * {@link #start()} is called. - * - * @return the number of milliseconds to delay running the animation - */ - @Override - public long getStartDelay() { - return mStartDelay; - } - - /** - * The amount of time, in milliseconds, to delay starting the animation after - * {@link #start()} is called. - - * @param startDelay The amount of the delay, in milliseconds - */ - @Override - public void setStartDelay(long startDelay) { - mStartDelay = startDelay; - } - - /** - * Gets the length of each of the child animations of this AnimatorSet. This value may - * be less than 0, which indicates that no duration has been set on this AnimatorSet - * and each of the child animations will use their own duration. - * - * @return The length of the animation, in milliseconds, of each of the child - * animations of this AnimatorSet. - */ - @Override - public long getDuration() { - return mDuration; - } - - /** - * Sets the length of each of the current child animations of this AnimatorSet. By default, - * each child animation will use its own duration. If the duration is set on the AnimatorSet, - * then each child animation inherits this duration. - * - * @param duration The length of the animation, in milliseconds, of each of the child - * animations of this AnimatorSet. - */ - @Override - public AnimatorSet setDuration(long duration) { - if (duration < 0) { - throw new IllegalArgumentException("duration must be a value of zero or greater"); - } - for (Node node : mNodes) { - // TODO: don't set the duration of the timing-only nodes created by AnimatorSet to - // insert "play-after" delays - node.animation.setDuration(duration); - } - mDuration = duration; - return this; - } - - @Override - public void setupStartValues() { - for (Node node : mNodes) { - node.animation.setupStartValues(); - } - } - - @Override - public void setupEndValues() { - for (Node node : mNodes) { - node.animation.setupEndValues(); - } - } - - /** - * {@inheritDoc} - * - * <p>Starting this <code>AnimatorSet</code> will, in turn, start the animations for which - * it is responsible. The details of when exactly those animations are started depends on - * the dependency relationships that have been set up between the animations. - */ - @Override - public void start() { - mTerminated = false; - mStarted = true; - - // First, sort the nodes (if necessary). This will ensure that sortedNodes - // contains the animation nodes in the correct order. - sortNodes(); - - int numSortedNodes = mSortedNodes.size(); - for (int i = 0; i < numSortedNodes; ++i) { - Node node = mSortedNodes.get(i); - // First, clear out the old listeners - ArrayList<AnimatorListener> oldListeners = node.animation.getListeners(); - if (oldListeners != null && oldListeners.size() > 0) { - final ArrayList<AnimatorListener> clonedListeners = new - ArrayList<AnimatorListener>(oldListeners); - - for (AnimatorListener listener : clonedListeners) { - if (listener instanceof DependencyListener || - listener instanceof AnimatorSetListener) { - node.animation.removeListener(listener); - } - } - } - } - - // nodesToStart holds the list of nodes to be started immediately. We don't want to - // start the animations in the loop directly because we first need to set up - // dependencies on all of the nodes. For example, we don't want to start an animation - // when some other animation also wants to start when the first animation begins. - final ArrayList<Node> nodesToStart = new ArrayList<Node>(); - for (int i = 0; i < numSortedNodes; ++i) { - Node node = mSortedNodes.get(i); - if (mSetListener == null) { - mSetListener = new AnimatorSetListener(this); - } - if (node.dependencies == null || node.dependencies.size() == 0) { - nodesToStart.add(node); - } else { - int numDependencies = node.dependencies.size(); - for (int j = 0; j < numDependencies; ++j) { - Dependency dependency = node.dependencies.get(j); - dependency.node.animation.addListener( - new DependencyListener(this, node, dependency.rule)); - } - node.tmpDependencies = (ArrayList<Dependency>) node.dependencies.clone(); - } - node.animation.addListener(mSetListener); - } - // Now that all dependencies are set up, start the animations that should be started. - if (mStartDelay <= 0) { - for (Node node : nodesToStart) { - node.animation.start(); - mPlayingSet.add(node.animation); - } - } else { - mDelayAnim = ValueAnimator.ofFloat(0f, 1f); - mDelayAnim.setDuration(mStartDelay); - mDelayAnim.addListener(new AnimatorListenerAdapter() { - boolean canceled = false; - public void onAnimationCancel(Animator anim) { - canceled = true; - } - public void onAnimationEnd(Animator anim) { - if (!canceled) { - int numNodes = nodesToStart.size(); - for (int i = 0; i < numNodes; ++i) { - Node node = nodesToStart.get(i); - node.animation.start(); - mPlayingSet.add(node.animation); - } - } - } - }); - mDelayAnim.start(); - } - if (mListeners != null) { - ArrayList<AnimatorListener> tmpListeners = - (ArrayList<AnimatorListener>) mListeners.clone(); - int numListeners = tmpListeners.size(); - for (int i = 0; i < numListeners; ++i) { - tmpListeners.get(i).onAnimationStart(this); - } - } - if (mNodes.size() == 0 && mStartDelay == 0) { - // Handle unusual case where empty AnimatorSet is started - should send out - // end event immediately since the event will not be sent out at all otherwise - mStarted = false; - if (mListeners != null) { - ArrayList<AnimatorListener> tmpListeners = - (ArrayList<AnimatorListener>) mListeners.clone(); - int numListeners = tmpListeners.size(); - for (int i = 0; i < numListeners; ++i) { - tmpListeners.get(i).onAnimationEnd(this); - } - } - } - } - - @Override - public AnimatorSet clone() { - final AnimatorSet anim = (AnimatorSet) super.clone(); - /* - * The basic clone() operation copies all items. This doesn't work very well for - * AnimatorSet, because it will copy references that need to be recreated and state - * that may not apply. What we need to do now is put the clone in an uninitialized - * state, with fresh, empty data structures. Then we will build up the nodes list - * manually, as we clone each Node (and its animation). The clone will then be sorted, - * and will populate any appropriate lists, when it is started. - */ - anim.mNeedsSort = true; - anim.mTerminated = false; - anim.mStarted = false; - anim.mPlayingSet = new ArrayList<Animator>(); - anim.mNodeMap = new HashMap<Animator, Node>(); - anim.mNodes = new ArrayList<Node>(); - anim.mSortedNodes = new ArrayList<Node>(); - - // Walk through the old nodes list, cloning each node and adding it to the new nodemap. - // One problem is that the old node dependencies point to nodes in the old AnimatorSet. - // We need to track the old/new nodes in order to reconstruct the dependencies in the clone. - HashMap<Node, Node> nodeCloneMap = new HashMap<Node, Node>(); // <old, new> - for (Node node : mNodes) { - Node nodeClone = node.clone(); - nodeCloneMap.put(node, nodeClone); - anim.mNodes.add(nodeClone); - anim.mNodeMap.put(nodeClone.animation, nodeClone); - // Clear out the dependencies in the clone; we'll set these up manually later - nodeClone.dependencies = null; - nodeClone.tmpDependencies = null; - nodeClone.nodeDependents = null; - nodeClone.nodeDependencies = null; - // clear out any listeners that were set up by the AnimatorSet; these will - // be set up when the clone's nodes are sorted - ArrayList<AnimatorListener> cloneListeners = nodeClone.animation.getListeners(); - if (cloneListeners != null) { - ArrayList<AnimatorListener> listenersToRemove = null; - for (AnimatorListener listener : cloneListeners) { - if (listener instanceof AnimatorSetListener) { - if (listenersToRemove == null) { - listenersToRemove = new ArrayList<AnimatorListener>(); - } - listenersToRemove.add(listener); - } - } - if (listenersToRemove != null) { - for (AnimatorListener listener : listenersToRemove) { - cloneListeners.remove(listener); - } - } - } - } - // Now that we've cloned all of the nodes, we're ready to walk through their - // dependencies, mapping the old dependencies to the new nodes - for (Node node : mNodes) { - Node nodeClone = nodeCloneMap.get(node); - if (node.dependencies != null) { - for (Dependency dependency : node.dependencies) { - Node clonedDependencyNode = nodeCloneMap.get(dependency.node); - Dependency cloneDependency = new Dependency(clonedDependencyNode, - dependency.rule); - nodeClone.addDependency(cloneDependency); - } - } - } - - return anim; - } - - /** - * This class is the mechanism by which animations are started based on events in other - * animations. If an animation has multiple dependencies on other animations, then - * all dependencies must be satisfied before the animation is started. - */ - private static class DependencyListener implements AnimatorListener { - - private AnimatorSet mAnimatorSet; - - // The node upon which the dependency is based. - private Node mNode; - - // The Dependency rule (WITH or AFTER) that the listener should wait for on - // the node - private int mRule; - - public DependencyListener(AnimatorSet animatorSet, Node node, int rule) { - this.mAnimatorSet = animatorSet; - this.mNode = node; - this.mRule = rule; - } - - /** - * Ignore cancel events for now. We may want to handle this eventually, - * to prevent follow-on animations from running when some dependency - * animation is canceled. - */ - public void onAnimationCancel(Animator animation) { - } - - /** - * An end event is received - see if this is an event we are listening for - */ - public void onAnimationEnd(Animator animation) { - if (mRule == Dependency.AFTER) { - startIfReady(animation); - } - } - - /** - * Ignore repeat events for now - */ - public void onAnimationRepeat(Animator animation) { - } - - /** - * A start event is received - see if this is an event we are listening for - */ - public void onAnimationStart(Animator animation) { - if (mRule == Dependency.WITH) { - startIfReady(animation); - } - } - - /** - * Check whether the event received is one that the node was waiting for. - * If so, mark it as complete and see whether it's time to start - * the animation. - * @param dependencyAnimation the animation that sent the event. - */ - private void startIfReady(Animator dependencyAnimation) { - if (mAnimatorSet.mTerminated) { - // if the parent AnimatorSet was canceled, then don't start any dependent anims - return; - } - Dependency dependencyToRemove = null; - int numDependencies = mNode.tmpDependencies.size(); - for (int i = 0; i < numDependencies; ++i) { - Dependency dependency = mNode.tmpDependencies.get(i); - if (dependency.rule == mRule && - dependency.node.animation == dependencyAnimation) { - // rule fired - remove the dependency and listener and check to - // see whether it's time to start the animation - dependencyToRemove = dependency; - dependencyAnimation.removeListener(this); - break; - } - } - mNode.tmpDependencies.remove(dependencyToRemove); - if (mNode.tmpDependencies.size() == 0) { - // all dependencies satisfied: start the animation - mNode.animation.start(); - mAnimatorSet.mPlayingSet.add(mNode.animation); - } - } - - } - - private class AnimatorSetListener implements AnimatorListener { - - private AnimatorSet mAnimatorSet; - - AnimatorSetListener(AnimatorSet animatorSet) { - mAnimatorSet = animatorSet; - } - - public void onAnimationCancel(Animator animation) { - if (!mTerminated) { - // Listeners are already notified of the AnimatorSet canceling in cancel(). - // The logic below only kicks in when animations end normally - if (mPlayingSet.size() == 0) { - if (mListeners != null) { - int numListeners = mListeners.size(); - for (int i = 0; i < numListeners; ++i) { - mListeners.get(i).onAnimationCancel(mAnimatorSet); - } - } - } - } - } - - public void onAnimationEnd(Animator animation) { - animation.removeListener(this); - mPlayingSet.remove(animation); - Node animNode = mAnimatorSet.mNodeMap.get(animation); - animNode.done = true; - if (!mTerminated) { - // Listeners are already notified of the AnimatorSet ending in cancel() or - // end(); the logic below only kicks in when animations end normally - ArrayList<Node> sortedNodes = mAnimatorSet.mSortedNodes; - boolean allDone = true; - int numSortedNodes = sortedNodes.size(); - for (int i = 0; i < numSortedNodes; ++i) { - if (!sortedNodes.get(i).done) { - allDone = false; - break; - } - } - if (allDone) { - // If this was the last child animation to end, then notify listeners that this - // AnimatorSet has ended - if (mListeners != null) { - ArrayList<AnimatorListener> tmpListeners = - (ArrayList<AnimatorListener>) mListeners.clone(); - int numListeners = tmpListeners.size(); - for (int i = 0; i < numListeners; ++i) { - tmpListeners.get(i).onAnimationEnd(mAnimatorSet); - } - } - mAnimatorSet.mStarted = false; - } - } - } - - // Nothing to do - public void onAnimationRepeat(Animator animation) { - } - - // Nothing to do - public void onAnimationStart(Animator animation) { - } - - } - - /** - * This method sorts the current set of nodes, if needed. The sort is a simple - * DependencyGraph sort, which goes like this: - * - All nodes without dependencies become 'roots' - * - while roots list is not null - * - for each root r - * - add r to sorted list - * - remove r as a dependency from any other node - * - any nodes with no dependencies are added to the roots list - */ - private void sortNodes() { - if (mNeedsSort) { - mSortedNodes.clear(); - ArrayList<Node> roots = new ArrayList<Node>(); - int numNodes = mNodes.size(); - for (int i = 0; i < numNodes; ++i) { - Node node = mNodes.get(i); - if (node.dependencies == null || node.dependencies.size() == 0) { - roots.add(node); - } - } - ArrayList<Node> tmpRoots = new ArrayList<Node>(); - while (roots.size() > 0) { - int numRoots = roots.size(); - for (int i = 0; i < numRoots; ++i) { - Node root = roots.get(i); - mSortedNodes.add(root); - if (root.nodeDependents != null) { - int numDependents = root.nodeDependents.size(); - for (int j = 0; j < numDependents; ++j) { - Node node = root.nodeDependents.get(j); - node.nodeDependencies.remove(root); - if (node.nodeDependencies.size() == 0) { - tmpRoots.add(node); - } - } - } - } - roots.clear(); - roots.addAll(tmpRoots); - tmpRoots.clear(); - } - mNeedsSort = false; - if (mSortedNodes.size() != mNodes.size()) { - throw new IllegalStateException("Circular dependencies cannot exist" - + " in AnimatorSet"); - } - } else { - // Doesn't need sorting, but still need to add in the nodeDependencies list - // because these get removed as the event listeners fire and the dependencies - // are satisfied - int numNodes = mNodes.size(); - for (int i = 0; i < numNodes; ++i) { - Node node = mNodes.get(i); - if (node.dependencies != null && node.dependencies.size() > 0) { - int numDependencies = node.dependencies.size(); - for (int j = 0; j < numDependencies; ++j) { - Dependency dependency = node.dependencies.get(j); - if (node.nodeDependencies == null) { - node.nodeDependencies = new ArrayList<Node>(); - } - if (!node.nodeDependencies.contains(dependency.node)) { - node.nodeDependencies.add(dependency.node); - } - } - } - // nodes are 'done' by default; they become un-done when started, and done - // again when ended - node.done = false; - } - } - } - - /** - * Dependency holds information about the node that some other node is - * dependent upon and the nature of that dependency. - * - */ - private static class Dependency { - static final int WITH = 0; // dependent node must start with this dependency node - static final int AFTER = 1; // dependent node must start when this dependency node finishes - - // The node that the other node with this Dependency is dependent upon - public Node node; - - // The nature of the dependency (WITH or AFTER) - public int rule; - - public Dependency(Node node, int rule) { - this.node = node; - this.rule = rule; - } - } - - /** - * A Node is an embodiment of both the Animator that it wraps as well as - * any dependencies that are associated with that Animation. This includes - * both dependencies upon other nodes (in the dependencies list) as - * well as dependencies of other nodes upon this (in the nodeDependents list). - */ - private static class Node implements Cloneable { - public Animator animation; - - /** - * These are the dependencies that this node's animation has on other - * nodes. For example, if this node's animation should begin with some - * other animation ends, then there will be an item in this node's - * dependencies list for that other animation's node. - */ - public ArrayList<Dependency> dependencies = null; - - /** - * tmpDependencies is a runtime detail. We use the dependencies list for sorting. - * But we also use the list to keep track of when multiple dependencies are satisfied, - * but removing each dependency as it is satisfied. We do not want to remove - * the dependency itself from the list, because we need to retain that information - * if the AnimatorSet is launched in the future. So we create a copy of the dependency - * list when the AnimatorSet starts and use this tmpDependencies list to track the - * list of satisfied dependencies. - */ - public ArrayList<Dependency> tmpDependencies = null; - - /** - * nodeDependencies is just a list of the nodes that this Node is dependent upon. - * This information is used in sortNodes(), to determine when a node is a root. - */ - public ArrayList<Node> nodeDependencies = null; - - /** - * nodeDepdendents is the list of nodes that have this node as a dependency. This - * is a utility field used in sortNodes to facilitate removing this node as a - * dependency when it is a root node. - */ - public ArrayList<Node> nodeDependents = null; - - /** - * Flag indicating whether the animation in this node is finished. This flag - * is used by AnimatorSet to check, as each animation ends, whether all child animations - * are done and it's time to send out an end event for the entire AnimatorSet. - */ - public boolean done = false; - - /** - * Constructs the Node with the animation that it encapsulates. A Node has no - * dependencies by default; dependencies are added via the addDependency() - * method. - * - * @param animation The animation that the Node encapsulates. - */ - public Node(Animator animation) { - this.animation = animation; - } - - /** - * Add a dependency to this Node. The dependency includes information about the - * node that this node is dependency upon and the nature of the dependency. - * @param dependency - */ - public void addDependency(Dependency dependency) { - if (dependencies == null) { - dependencies = new ArrayList<Dependency>(); - nodeDependencies = new ArrayList<Node>(); - } - dependencies.add(dependency); - if (!nodeDependencies.contains(dependency.node)) { - nodeDependencies.add(dependency.node); - } - Node dependencyNode = dependency.node; - if (dependencyNode.nodeDependents == null) { - dependencyNode.nodeDependents = new ArrayList<Node>(); - } - dependencyNode.nodeDependents.add(this); - } - - @Override - public Node clone() { - try { - Node node = (Node) super.clone(); - node.animation = animation.clone(); - return node; - } catch (CloneNotSupportedException e) { - throw new AssertionError(); - } - } - } - - /** - * The <code>Builder</code> object is a utility class to facilitate adding animations to a - * <code>AnimatorSet</code> along with the relationships between the various animations. The - * intention of the <code>Builder</code> methods, along with the {@link - * AnimatorSet#play(Animator) play()} method of <code>AnimatorSet</code> is to make it possible - * to express the dependency relationships of animations in a natural way. Developers can also - * use the {@link AnimatorSet#playTogether(Animator[]) playTogether()} and {@link - * AnimatorSet#playSequentially(Animator[]) playSequentially()} methods if these suit the need, - * but it might be easier in some situations to express the AnimatorSet of animations in pairs. - * <p/> - * <p>The <code>Builder</code> object cannot be constructed directly, but is rather constructed - * internally via a call to {@link AnimatorSet#play(Animator)}.</p> - * <p/> - * <p>For example, this sets up a AnimatorSet to play anim1 and anim2 at the same time, anim3 to - * play when anim2 finishes, and anim4 to play when anim3 finishes:</p> - * <pre> - * AnimatorSet s = new AnimatorSet(); - * s.play(anim1).with(anim2); - * s.play(anim2).before(anim3); - * s.play(anim4).after(anim3); - * </pre> - * <p/> - * <p>Note in the example that both {@link Builder#before(Animator)} and {@link - * Builder#after(Animator)} are used. These are just different ways of expressing the same - * relationship and are provided to make it easier to say things in a way that is more natural, - * depending on the situation.</p> - * <p/> - * <p>It is possible to make several calls into the same <code>Builder</code> object to express - * multiple relationships. However, note that it is only the animation passed into the initial - * {@link AnimatorSet#play(Animator)} method that is the dependency in any of the successive - * calls to the <code>Builder</code> object. For example, the following code starts both anim2 - * and anim3 when anim1 ends; there is no direct dependency relationship between anim2 and - * anim3: - * <pre> - * AnimatorSet s = new AnimatorSet(); - * s.play(anim1).before(anim2).before(anim3); - * </pre> - * If the desired result is to play anim1 then anim2 then anim3, this code expresses the - * relationship correctly:</p> - * <pre> - * AnimatorSet s = new AnimatorSet(); - * s.play(anim1).before(anim2); - * s.play(anim2).before(anim3); - * </pre> - * <p/> - * <p>Note that it is possible to express relationships that cannot be resolved and will not - * result in sensible results. For example, <code>play(anim1).after(anim1)</code> makes no - * sense. In general, circular dependencies like this one (or more indirect ones where a depends - * on b, which depends on c, which depends on a) should be avoided. Only create AnimatorSets - * that can boil down to a simple, one-way relationship of animations starting with, before, and - * after other, different, animations.</p> - */ - public class Builder { - - /** - * This tracks the current node being processed. It is supplied to the play() method - * of AnimatorSet and passed into the constructor of Builder. - */ - private Node mCurrentNode; - - /** - * package-private constructor. Builders are only constructed by AnimatorSet, when the - * play() method is called. - * - * @param anim The animation that is the dependency for the other animations passed into - * the other methods of this Builder object. - */ - Builder(Animator anim) { - mCurrentNode = mNodeMap.get(anim); - if (mCurrentNode == null) { - mCurrentNode = new Node(anim); - mNodeMap.put(anim, mCurrentNode); - mNodes.add(mCurrentNode); - } - } - - /** - * Sets up the given animation to play at the same time as the animation supplied in the - * {@link AnimatorSet#play(Animator)} call that created this <code>Builder</code> object. - * - * @param anim The animation that will play when the animation supplied to the - * {@link AnimatorSet#play(Animator)} method starts. - */ - public Builder with(Animator anim) { - Node node = mNodeMap.get(anim); - if (node == null) { - node = new Node(anim); - mNodeMap.put(anim, node); - mNodes.add(node); - } - Dependency dependency = new Dependency(mCurrentNode, Dependency.WITH); - node.addDependency(dependency); - return this; - } - - /** - * Sets up the given animation to play when the animation supplied in the - * {@link AnimatorSet#play(Animator)} call that created this <code>Builder</code> object - * ends. - * - * @param anim The animation that will play when the animation supplied to the - * {@link AnimatorSet#play(Animator)} method ends. - */ - public Builder before(Animator anim) { - Node node = mNodeMap.get(anim); - if (node == null) { - node = new Node(anim); - mNodeMap.put(anim, node); - mNodes.add(node); - } - Dependency dependency = new Dependency(mCurrentNode, Dependency.AFTER); - node.addDependency(dependency); - return this; - } - - /** - * Sets up the given animation to play when the animation supplied in the - * {@link AnimatorSet#play(Animator)} call that created this <code>Builder</code> object - * to start when the animation supplied in this method call ends. - * - * @param anim The animation whose end will cause the animation supplied to the - * {@link AnimatorSet#play(Animator)} method to play. - */ - public Builder after(Animator anim) { - Node node = mNodeMap.get(anim); - if (node == null) { - node = new Node(anim); - mNodeMap.put(anim, node); - mNodes.add(node); - } - Dependency dependency = new Dependency(node, Dependency.AFTER); - mCurrentNode.addDependency(dependency); - return this; - } - - /** - * Sets up the animation supplied in the - * {@link AnimatorSet#play(Animator)} call that created this <code>Builder</code> object - * to play when the given amount of time elapses. - * - * @param delay The number of milliseconds that should elapse before the - * animation starts. - */ - public Builder after(long delay) { - // setup dummy ValueAnimator just to run the clock - ValueAnimator anim = ValueAnimator.ofFloat(0f, 1f); - anim.setDuration(delay); - after(anim); - return this; - } - - } - -} |