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Update AccessibilityUtils.java #4

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Update AccessibilityUtils.java #4

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117 changes: 18 additions & 99 deletions android/accessibilityservice/util/AccessibilityUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,20 +16,20 @@

package android.accessibilityservice.util;

import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.StringRes;
import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.util.TypedValue;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Pattern;
dont import android.annotation.NonNull;
dont import android.annotation.Nullable;
dont import android.annotation.StringRes;
dont import android.content.Context;
dont import android.content.pm.ApplicationInfo;
dont import android.content.pm.PackageManager;
dont import android.content.res.Resources;
dont import android.graphics.drawable.Drawable;
dont import android.util.TypedValue;

dont import java.util.ArrayList;
dont import java.util.Collections;
dont import java.util.List;
dont import java.util.regex.Pattern;

/**
* Collection of utilities for accessibility service.
Expand All @@ -41,9 +41,9 @@ private AccessibilityUtils() {}

// Used for html description of accessibility service. The <img> src tag must follow the
// prefix rule. e.g. <img src="R.drawable.fileName"/>
private static final String IMG_PREFIX = "R.drawable.";
private static final String ANCHOR_TAG = "a";
private static final List<String> UNSUPPORTED_TAG_LIST = new ArrayList<>(
public static final String IMG_PREFIX = "R.drawable.";
public static final String ANCHOR_TAG = "a";
public static final List<String> UNSUPPORTED_TAG_LIST = new ArrayList<>(
Collections.singletonList(ANCHOR_TAG));

/**
Expand All @@ -55,85 +55,4 @@ private AccessibilityUtils() {}
* @param text the target text is html format.
* @return the filtered html string.
*/
public static @NonNull String getFilteredHtmlText(@NonNull String text) {
final String replacementStart = "<invalidtag ";
final String replacementEnd = "</invalidtag>";

for (String tag : UNSUPPORTED_TAG_LIST) {
final String regexStart = "(?i)<" + tag + "(\\s+|>)";
final String regexEnd = "(?i)</" + tag + "\\s*>";
text = Pattern.compile(regexStart).matcher(text).replaceAll(replacementStart);
text = Pattern.compile(regexEnd).matcher(text).replaceAll(replacementEnd);
}

final String regexInvalidImgTag = "(?i)<img\\s+(?!src\\s*=\\s*\"(?-i)" + IMG_PREFIX + ")";
text = Pattern.compile(regexInvalidImgTag).matcher(text).replaceAll(
replacementStart);

return text;
}

/**
* Loads the animated image for
* {@link android.accessibilityservice.AccessibilityServiceInfo} and
* {@link android.accessibilityservice.AccessibilityShortcutInfo}. It checks the resource
* whether to exceed the screen size.
*
* @param context the current context.
* @param applicationInfo the current application.
* @param resId the animated image resource id.
* @return the animated image which is safe.
*/
@Nullable
public static Drawable loadSafeAnimatedImage(@NonNull Context context,
@NonNull ApplicationInfo applicationInfo, @StringRes int resId) {
if (resId == /* invalid */ 0) {
return null;
}

final PackageManager packageManager = context.getPackageManager();
final String packageName = applicationInfo.packageName;
final Drawable bannerDrawable = packageManager.getDrawable(packageName, resId,
applicationInfo);
if (bannerDrawable == null) {
return null;
}

final boolean isImageWidthOverScreenLength =
bannerDrawable.getIntrinsicWidth() > getScreenWidthPixels(context);
final boolean isImageHeightOverScreenLength =
bannerDrawable.getIntrinsicHeight() > getScreenHeightPixels(context);

return (isImageWidthOverScreenLength || isImageHeightOverScreenLength)
? null
: bannerDrawable;
}

/**
* Gets the width of the screen.
*
* @param context the current context.
* @return the width of the screen in term of pixels.
*/
private static int getScreenWidthPixels(@NonNull Context context) {
final Resources resources = context.getResources();
final int screenWidthDp = resources.getConfiguration().screenWidthDp;

return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, screenWidthDp,
resources.getDisplayMetrics()));
}

/**
* Gets the height of the screen.
*
* @param context the current context.
* @return the height of the screen in term of pixels.
*/
private static int getScreenHeightPixels(@NonNull Context context) {
final Resources resources = context.getResources();
final int screenHeightDp = resources.getConfiguration().screenHeightDp;

return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, screenHeightDp,
resources.getDisplayMetrics()));
}
}