113 lines
4.1 KiB
Java
113 lines
4.1 KiB
Java
package net.simonvt.menudrawer.compat;
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import android.app.ActionBar;
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import android.app.Activity;
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import android.content.res.TypedArray;
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import android.graphics.drawable.Drawable;
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import timber.log.Timber;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ImageView;
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import java.lang.reflect.Method;
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final class ActionBarHelperNative {
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private ActionBarHelperNative() {
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}
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private static final int[] THEME_ATTRS = new int[] {
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android.R.attr.homeAsUpIndicator
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};
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public static void setActionBarUpIndicator(Object info, Activity activity, Drawable drawable, int contentDescRes) {
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final SetIndicatorInfo sii = (SetIndicatorInfo) info;
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if (sii.setHomeAsUpIndicator != null) {
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try {
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final ActionBar actionBar = activity.getActionBar();
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sii.setHomeAsUpIndicator.invoke(actionBar, drawable);
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sii.setHomeActionContentDescription.invoke(actionBar, contentDescRes);
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} catch (Throwable t) {
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if (ActionBarHelper.DEBUG) Timber.e(t, "Couldn't set home-as-up indicator via JB-MR2 API");
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}
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} else if (sii.upIndicatorView != null) {
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sii.upIndicatorView.setImageDrawable(drawable);
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} else {
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if (ActionBarHelper.DEBUG) Timber.e("Couldn't set home-as-up indicator");
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}
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}
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public static void setActionBarDescription(Object info, Activity activity, int contentDescRes) {
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final SetIndicatorInfo sii = (SetIndicatorInfo) info;
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if (sii.setHomeAsUpIndicator != null) {
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try {
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final ActionBar actionBar = activity.getActionBar();
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sii.setHomeActionContentDescription.invoke(actionBar, contentDescRes);
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} catch (Throwable t) {
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if (ActionBarHelper.DEBUG) Timber.e(t, "Couldn't set content description via JB-MR2 API");
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}
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}
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}
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public static Drawable getThemeUpIndicator(Object info, Activity activity) {
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final TypedArray a = activity.obtainStyledAttributes(THEME_ATTRS);
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final Drawable result = a.getDrawable(0);
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a.recycle();
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return result;
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}
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public static Object getIndicatorInfo(Activity activity) {
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return new SetIndicatorInfo(activity);
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}
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public static void setDisplayHomeAsUpEnabled(Activity activity, boolean b) {
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ActionBar actionBar = activity.getActionBar();
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if (actionBar != null) {
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actionBar.setDisplayHomeAsUpEnabled(b);
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}
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}
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private static class SetIndicatorInfo {
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public Method setHomeAsUpIndicator;
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public Method setHomeActionContentDescription;
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public ImageView upIndicatorView;
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SetIndicatorInfo(Activity activity) {
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try {
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setHomeAsUpIndicator = ActionBar.class.getDeclaredMethod("setHomeAsUpIndicator", Drawable.class);
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setHomeActionContentDescription = ActionBar.class.getDeclaredMethod(
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"setHomeActionContentDescription", Integer.TYPE);
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// If we got the method we won't need the stuff below.
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return;
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} catch (Throwable t) {
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// Oh well. We'll use the other mechanism below instead.
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}
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final View home = activity.findViewById(android.R.id.home);
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if (home == null) {
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// Action bar doesn't have a known configuration, an OEM messed with things.
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return;
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}
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final ViewGroup parent = (ViewGroup) home.getParent();
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final int childCount = parent.getChildCount();
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if (childCount != 2) {
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// No idea which one will be the right one, an OEM messed with things.
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return;
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}
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final View first = parent.getChildAt(0);
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final View second = parent.getChildAt(1);
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final View up = first.getId() == android.R.id.home ? second : first;
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if (up instanceof ImageView) {
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// Jackpot! (Probably...)
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upIndicatorView = (ImageView) up;
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}
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}
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}
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}
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