package com.mm.android.deviceaddmodule.mobilecommon.widget;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.Color;
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import android.graphics.Typeface;
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import android.graphics.drawable.ShapeDrawable;
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import android.graphics.drawable.shapes.RoundRectShape;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.view.Gravity;
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import android.view.View;
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import android.view.ViewGroup;
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import android.view.ViewGroup.LayoutParams;
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import android.view.ViewParent;
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import android.view.animation.AccelerateInterpolator;
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import android.view.animation.AlphaAnimation;
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import android.view.animation.Animation;
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import android.view.animation.DecelerateInterpolator;
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import android.widget.FrameLayout;
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import android.widget.TabWidget;
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/**
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* A simple text label view that can be applied as a "badge" to any given {@link View}.
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* This class is intended to be instantiated at runtime rather than included in XML layouts.
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*
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*/
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public class BadgeView extends android.support.v7.widget.AppCompatTextView {
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private final static int POSITION_TOP_LEFT = 1;
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private final static int POSITION_TOP_RIGHT = 2;
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private final static int POSITION_BOTTOM_LEFT = 3;
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private final static int POSITION_BOTTOM_RIGHT = 4;
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private final static int POSITION_CENTER = 5;
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private final static int DEFAULT_MARGIN_DIP = 5;
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private final static int DEFAULT_LR_PADDING_DIP = 5;
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private final static int DEFAULT_CORNER_RADIUS_DIP = 9;
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private final static int DEFAULT_POSITION = POSITION_TOP_RIGHT;
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private final static int DEFAULT_BADGE_COLOR = Color.parseColor("#CCFF0000"); // Color.RED;
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private final static int DEFAULT_TEXT_COLOR = Color.WHITE;
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private static Animation fadeIn;
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private static Animation fadeOut;
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private Context context;
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private View target;
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private int badgePosition;
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private int badgeMarginH;
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private int badgeMarginV;
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private int badgeColor;
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private boolean isShown;
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private ShapeDrawable badgeBg;
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private int targetTabIndex;
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public BadgeView(Context context) {
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this(context, (AttributeSet) null, android.R.attr.textViewStyle);
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}
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public BadgeView(Context context, AttributeSet attrs) {
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this(context, attrs, android.R.attr.textViewStyle);
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}
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/**
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* Constructor -
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*
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* create a new BadgeView instance attached to a target {@link View}.
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*
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* @param context context for this view.
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* @param target the View to attach the badge to.
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*/
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public BadgeView(Context context, View target) {
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this(context, null, android.R.attr.textViewStyle, target, 0);
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}
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/**
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* Constructor -
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*
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* create a new BadgeView instance attached to a target {@link TabWidget}
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* tab at a given index.
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*
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* @param context context for this view.
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* @param target the TabWidget to attach the badge to.
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* @param index the position of the tab within the target.
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*/
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public BadgeView(Context context, TabWidget target, int index) {
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this(context, null, android.R.attr.textViewStyle, target, index);
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}
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public BadgeView(Context context, AttributeSet attrs, int defStyle) {
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this(context, attrs, defStyle, null, 0);
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}
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public BadgeView(Context context, AttributeSet attrs, int defStyle, View target, int tabIndex) {
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super(context, attrs, defStyle);
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init(context, target, tabIndex);
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}
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private void init(Context context, View target, int tabIndex) {
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this.context = context;
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this.target = target;
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this.targetTabIndex = tabIndex;
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// apply defaults
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badgePosition = DEFAULT_POSITION;
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badgeMarginH = dipToPixels(DEFAULT_MARGIN_DIP);
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badgeMarginV = badgeMarginH;
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badgeColor = DEFAULT_BADGE_COLOR;
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setTypeface(Typeface.DEFAULT_BOLD);
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int paddingPixels = dipToPixels(DEFAULT_LR_PADDING_DIP);
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setPadding(paddingPixels, 0, paddingPixels, 0);
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setTextColor(DEFAULT_TEXT_COLOR);
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fadeIn = new AlphaAnimation(0, 1);
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fadeIn.setInterpolator(new DecelerateInterpolator());
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fadeIn.setDuration(200);
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fadeOut = new AlphaAnimation(1, 0);
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fadeOut.setInterpolator(new AccelerateInterpolator());
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fadeOut.setDuration(200);
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isShown = false;
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if (this.target != null) {
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applyTo(this.target);
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} else {
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show();
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}
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}
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private void applyTo(View target) {
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LayoutParams lp = target.getLayoutParams();
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ViewParent parent = target.getParent();
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FrameLayout container = new FrameLayout(context);
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if (target instanceof TabWidget) {
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// set target to the relevant tab child container
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target = ((TabWidget) target).getChildTabViewAt(targetTabIndex);
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this.target = target;
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if(target != null){
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((ViewGroup) target).addView(container, new LayoutParams(LayoutParams.MATCH_PARENT,
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LayoutParams.MATCH_PARENT));
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this.setVisibility(View.GONE);
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container.addView(this);
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}
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} else {
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// TODO verify that parent is indeed a ViewGroup
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ViewGroup group = (ViewGroup) parent;
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int index = group.indexOfChild(target);
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group.removeView(target);
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group.addView(container, index, lp);
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container.addView(target);
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this.setVisibility(View.GONE);
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container.addView(this);
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group.invalidate();
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}
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}
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/**
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* Make the badge visible in the UI.
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*
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*/
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public void show() {
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show(false, null);
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}
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/**
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* Make the badge visible in the UI.
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*
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* @param animate flag to apply the default fade-in animation.
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*/
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public void show(boolean animate) {
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show(animate, fadeIn);
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}
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/**
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* Make the badge visible in the UI.
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*
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* @param anim Animation to apply to the view when made visible.
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*/
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public void show(Animation anim) {
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show(true, anim);
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}
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/**
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* Make the badge non-visible in the UI.
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*
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*/
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public void hide() {
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hide(false, null);
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}
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/**
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* Make the badge non-visible in the UI.
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*
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* @param animate flag to apply the default fade-out animation.
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*/
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public void hide(boolean animate) {
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hide(animate, fadeOut);
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}
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/**
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* Make the badge non-visible in the UI.
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*
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* @param anim Animation to apply to the view when made non-visible.
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*/
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public void hide(Animation anim) {
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hide(true, anim);
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}
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/**
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* Toggle the badge visibility in the UI.
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*
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*/
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public void toggle() {
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toggle(false, null, null);
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}
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/**
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* Toggle the badge visibility in the UI.
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*
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* @param animate flag to apply the default fade-in/out animation.
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*/
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public void toggle(boolean animate) {
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toggle(animate, fadeIn, fadeOut);
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}
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/**
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* Toggle the badge visibility in the UI.
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*
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* @param animIn Animation to apply to the view when made visible.
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* @param animOut Animation to apply to the view when made non-visible.
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*/
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public void toggle(Animation animIn, Animation animOut) {
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toggle(true, animIn, animOut);
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}
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private void show(boolean animate, Animation anim) {
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if (getBackground() == null) {
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if (badgeBg == null) {
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badgeBg = getDefaultBackground();
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}
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setBackgroundDrawable(badgeBg);
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}
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applyLayoutParams();
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if (animate) {
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this.startAnimation(anim);
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}
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this.setVisibility(View.VISIBLE);
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isShown = true;
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}
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private void hide(boolean animate, Animation anim) {
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this.setVisibility(View.GONE);
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if (animate) {
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this.startAnimation(anim);
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}
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isShown = false;
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}
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private void toggle(boolean animate, Animation animIn, Animation animOut) {
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if (isShown) {
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hide(animate && (animOut != null), animOut);
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} else {
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show(animate && (animIn != null), animIn);
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}
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}
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/**
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* Increment the numeric badge label. If the current badge label cannot be converted to
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* an integer value, its label will be set to "0".
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*
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* @param offset the increment offset.
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*/
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public int increment(int offset) {
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CharSequence txt = getText();
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int i;
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if (txt != null) {
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try {
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i = Integer.parseInt(txt.toString());
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} catch (NumberFormatException e) {
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i = 0;
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}
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} else {
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i = 0;
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}
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i = i + offset;
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setText(String.valueOf(i));
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return i;
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}
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/**
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* Decrement the numeric badge label. If the current badge label cannot be converted to
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* an integer value, its label will be set to "0".
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*
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* @param offset the decrement offset.
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*/
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public int decrement(int offset) {
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return increment(-offset);
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}
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private ShapeDrawable getDefaultBackground() {
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int r = dipToPixels(DEFAULT_CORNER_RADIUS_DIP);
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float[] outerR = new float[] {r, r, r, r, r, r, r, r};
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RoundRectShape rr = new RoundRectShape(outerR, null, null);
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ShapeDrawable drawable = new ShapeDrawable(rr);
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drawable.getPaint().setColor(badgeColor);
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return drawable;
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}
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private void applyLayoutParams() {
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FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
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switch (badgePosition) {
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case POSITION_TOP_LEFT:
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lp.gravity = Gravity.LEFT | Gravity.TOP;
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lp.setMargins(badgeMarginH, badgeMarginV, 0, 0);
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break;
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case POSITION_TOP_RIGHT:
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lp.gravity = Gravity.RIGHT | Gravity.TOP;
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lp.setMargins(0, badgeMarginV, badgeMarginH, 0);
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break;
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case POSITION_BOTTOM_LEFT:
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lp.gravity = Gravity.LEFT | Gravity.BOTTOM;
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lp.setMargins(badgeMarginH, 0, 0, badgeMarginV);
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break;
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case POSITION_BOTTOM_RIGHT:
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lp.gravity = Gravity.RIGHT | Gravity.BOTTOM;
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lp.setMargins(0, 0, badgeMarginH, badgeMarginV);
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break;
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case POSITION_CENTER:
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lp.gravity = Gravity.CENTER;
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lp.setMargins(0, 0, 0, 0);
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break;
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default:
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break;
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}
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setLayoutParams(lp);
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}
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/**
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* Returns the target View this badge has been attached to.
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*
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*/
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public View getTarget() {
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return target;
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}
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/**
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* Is this badge currently visible in the UI?
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*
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*/
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@Override
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public boolean isShown() {
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return isShown;
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}
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/**
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* Returns the positioning of this badge.
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*
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* one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
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*
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*/
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public int getBadgePosition() {
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return badgePosition;
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}
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/**
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* Set the positioning of this badge.
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*
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* @param layoutPosition one of POSITION_TOP_LEFT, POSITION_TOP_RIGHT, POSITION_BOTTOM_LEFT, POSITION_BOTTOM_RIGHT, POSTION_CENTER.
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*
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*/
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public void setBadgePosition(int layoutPosition) {
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this.badgePosition = layoutPosition;
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}
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/**
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* Returns the horizontal margin from the target View that is applied to this badge.
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*
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*/
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public int getHorizontalBadgeMargin() {
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return badgeMarginH;
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}
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/**
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* Returns the vertical margin from the target View that is applied to this badge.
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*
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*/
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public int getVerticalBadgeMargin() {
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return badgeMarginV;
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}
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/**
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* Set the horizontal/vertical margin from the target View that is applied to this badge.
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*
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* @param badgeMargin the margin in pixels.
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*/
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public void setBadgeMargin(int badgeMargin) {
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this.badgeMarginH = badgeMargin;
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this.badgeMarginV = badgeMargin;
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}
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/**
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* Set the horizontal/vertical margin from the target View that is applied to this badge.
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*
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* @param horizontal margin in pixels.
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* @param vertical margin in pixels.
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*/
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public void setBadgeMargin(int horizontal, int vertical) {
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this.badgeMarginH = horizontal;
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this.badgeMarginV = vertical;
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}
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/**
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* Returns the color value of the badge background.
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*
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*/
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public int getBadgeBackgroundColor() {
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return badgeColor;
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}
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/**
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* Set the color value of the badge background.
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*
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* @param badgeColor the badge background color.
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*/
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public void setBadgeBackgroundColor(int badgeColor) {
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this.badgeColor = badgeColor;
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badgeBg = getDefaultBackground();
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}
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private int dipToPixels(int dip) {
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Resources r = getResources();
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float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics());
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return (int) px;
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}
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}
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