mirror of
https://github.com/mozilla/gecko-dev.git
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106 lines
4.0 KiB
Java
106 lines
4.0 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko;
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import android.content.Context;
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import android.os.Build;
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import android.view.accessibility.AccessibilityNodeInfo;
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import android.view.animation.Animation;
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import android.view.animation.AnimationSet;
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import android.view.animation.AlphaAnimation;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.util.AttributeSet;
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import android.widget.ViewSwitcher;
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public class TabCounter extends GeckoTextSwitcher
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implements ViewSwitcher.ViewFactory {
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private static final float CENTER_X = 0.5f;
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private static final float CENTER_Y = 1.25f;
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private static final int DURATION = 300;
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private static final float Z_DISTANCE = 200;
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private final AnimationSet mFlipInForward;
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private final AnimationSet mFlipInBackward;
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private final AnimationSet mFlipOutForward;
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private final AnimationSet mFlipOutBackward;
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private final LayoutInflater mInflater;
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private int mCount = 0;
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private enum FadeMode {
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FADE_IN,
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FADE_OUT
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}
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public TabCounter(Context context, AttributeSet attrs) {
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super(context, attrs);
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mInflater = LayoutInflater.from(context);
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mFlipInForward = createAnimation(-90, 0, FadeMode.FADE_IN, -1 * Z_DISTANCE, false);
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mFlipInBackward = createAnimation(90, 0, FadeMode.FADE_IN, Z_DISTANCE, false);
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mFlipOutForward = createAnimation(0, -90, FadeMode.FADE_OUT, -1 * Z_DISTANCE, true);
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mFlipOutBackward = createAnimation(0, 90, FadeMode.FADE_OUT, Z_DISTANCE, true);
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removeAllViews();
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setFactory(this);
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setCount(0, false);
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if (Build.VERSION.SDK_INT >= 16) {
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// This adds the TextSwitcher to the a11y node tree, where we in turn
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// could make it return an empty info node. If we don't do this the
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// TextSwitcher's child TextViews get picked up, and we don't want
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// that since the tabs ImageButton is already properly labeled for
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// accessibility.
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setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
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setAccessibilityDelegate(new View.AccessibilityDelegate() {
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@Override
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public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {}
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});
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}
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}
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public void setCount(int count, boolean doAnimation) {
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if (!doAnimation) {
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setInAnimation(null);
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setOutAnimation(null);
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} else {
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if (mCount > count) {
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setInAnimation(mFlipInBackward);
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setOutAnimation(mFlipOutForward);
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} else if (mCount < count) {
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setInAnimation(mFlipInForward);
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setOutAnimation(mFlipOutBackward);
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} else {
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return;
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}
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}
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setText(String.valueOf(count));
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mCount = count;
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}
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private AnimationSet createAnimation(float startAngle, float endAngle,
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FadeMode fadeMode,
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float zEnd, boolean reverse) {
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final Context context = getContext();
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AnimationSet set = new AnimationSet(context, null);
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set.addAnimation(new Rotate3DAnimation(startAngle, endAngle, CENTER_X, CENTER_Y, zEnd, reverse));
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set.addAnimation(fadeMode == FadeMode.FADE_IN ? new AlphaAnimation(0.0f, 1.0f) :
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new AlphaAnimation(1.0f, 0.0f));
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set.setDuration(DURATION);
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set.setInterpolator(context, android.R.anim.accelerate_interpolator);
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return set;
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}
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@Override
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public View makeView() {
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return mInflater.inflate(R.layout.tabs_counter, null);
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}
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}
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