1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/toolbar/TabCounter.java Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,133 @@
1.4 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +package org.mozilla.gecko.toolbar;
1.10 +
1.11 +import org.mozilla.gecko.animation.Rotate3DAnimation;
1.12 +import org.mozilla.gecko.R;
1.13 +import org.mozilla.gecko.widget.ThemedTextSwitcher;
1.14 +
1.15 +import android.content.Context;
1.16 +import android.os.Build;
1.17 +import android.view.accessibility.AccessibilityNodeInfo;
1.18 +import android.view.animation.Animation;
1.19 +import android.view.animation.AnimationSet;
1.20 +import android.view.animation.AlphaAnimation;
1.21 +import android.view.LayoutInflater;
1.22 +import android.view.View;
1.23 +import android.util.AttributeSet;
1.24 +import android.widget.ViewSwitcher;
1.25 +
1.26 +public class TabCounter extends ThemedTextSwitcher
1.27 + implements ViewSwitcher.ViewFactory {
1.28 +
1.29 + private static final float CENTER_X = 0.5f;
1.30 + private static final float CENTER_Y = 1.25f;
1.31 + private static final int DURATION = 500;
1.32 + private static final float Z_DISTANCE = 200;
1.33 +
1.34 + private final AnimationSet mFlipInForward;
1.35 + private final AnimationSet mFlipInBackward;
1.36 + private final AnimationSet mFlipOutForward;
1.37 + private final AnimationSet mFlipOutBackward;
1.38 + private final LayoutInflater mInflater;
1.39 +
1.40 + private int mCount = 0;
1.41 +
1.42 + private enum FadeMode {
1.43 + FADE_IN,
1.44 + FADE_OUT
1.45 + }
1.46 +
1.47 + public TabCounter(Context context, AttributeSet attrs) {
1.48 + super(context, attrs);
1.49 + mInflater = LayoutInflater.from(context);
1.50 +
1.51 + mFlipInForward = createAnimation(-90, 0, FadeMode.FADE_IN, -1 * Z_DISTANCE, false);
1.52 + mFlipInBackward = createAnimation(90, 0, FadeMode.FADE_IN, Z_DISTANCE, false);
1.53 + mFlipOutForward = createAnimation(0, -90, FadeMode.FADE_OUT, -1 * Z_DISTANCE, true);
1.54 + mFlipOutBackward = createAnimation(0, 90, FadeMode.FADE_OUT, Z_DISTANCE, true);
1.55 +
1.56 + removeAllViews();
1.57 + setFactory(this);
1.58 +
1.59 + if (Build.VERSION.SDK_INT >= 16) {
1.60 + // This adds the TextSwitcher to the a11y node tree, where we in turn
1.61 + // could make it return an empty info node. If we don't do this the
1.62 + // TextSwitcher's child TextViews get picked up, and we don't want
1.63 + // that since the tabs ImageButton is already properly labeled for
1.64 + // accessibility.
1.65 + setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
1.66 + setAccessibilityDelegate(new View.AccessibilityDelegate() {
1.67 + @Override
1.68 + public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {}
1.69 + });
1.70 + }
1.71 + }
1.72 +
1.73 + void setCountWithAnimation(int count) {
1.74 + // Don't animate from initial state
1.75 + if (mCount == 0) {
1.76 + setCount(count);
1.77 + return;
1.78 + }
1.79 +
1.80 + if (mCount == count) {
1.81 + return;
1.82 + }
1.83 +
1.84 + if (count < mCount) {
1.85 + setInAnimation(mFlipInBackward);
1.86 + setOutAnimation(mFlipOutForward);
1.87 + } else {
1.88 + setInAnimation(mFlipInForward);
1.89 + setOutAnimation(mFlipOutBackward);
1.90 + }
1.91 +
1.92 + // Eliminate screen artifact. Set explicit In/Out animation pair order. This will always
1.93 + // animate pair in In->Out child order, prevent alternating use of the Out->In case.
1.94 + setDisplayedChild(0);
1.95 +
1.96 + // Set In value, trigger animation to Out value
1.97 + setCurrentText(String.valueOf(mCount));
1.98 + setText(String.valueOf(count));
1.99 +
1.100 + mCount = count;
1.101 + }
1.102 +
1.103 + void setCount(int count) {
1.104 + setCurrentText(String.valueOf(count));
1.105 + mCount = count;
1.106 + }
1.107 +
1.108 + // Alpha animations in editing mode cause action bar corruption on the
1.109 + // Nexus 7 (bug 961749). As a workaround, skip these animations in editing
1.110 + // mode.
1.111 + void onEnterEditingMode() {
1.112 + final int childCount = getChildCount();
1.113 + for (int i = 0; i < childCount; i++) {
1.114 + getChildAt(i).clearAnimation();
1.115 + }
1.116 + }
1.117 +
1.118 + private AnimationSet createAnimation(float startAngle, float endAngle,
1.119 + FadeMode fadeMode,
1.120 + float zEnd, boolean reverse) {
1.121 + final Context context = getContext();
1.122 + AnimationSet set = new AnimationSet(context, null);
1.123 + set.addAnimation(new Rotate3DAnimation(startAngle, endAngle, CENTER_X, CENTER_Y, zEnd, reverse));
1.124 + set.addAnimation(fadeMode == FadeMode.FADE_IN ? new AlphaAnimation(0.0f, 1.0f) :
1.125 + new AlphaAnimation(1.0f, 0.0f));
1.126 + set.setDuration(DURATION);
1.127 + set.setInterpolator(context, android.R.anim.accelerate_interpolator);
1.128 + return set;
1.129 + }
1.130 +
1.131 + @Override
1.132 + public View makeView() {
1.133 + return mInflater.inflate(R.layout.tabs_counter, null);
1.134 + }
1.135 +
1.136 +}
