Import Android SDK Platform P [4386628]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4386628 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4386628.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: I9b8400ac92116cae4f033d173f7a5682b26ccba9

1 files changed, 138 insertions, 0 deletions

diff --git a/android/text/NonEditableTextGenerator.java b/android/text/NonEditableTextGenerator.java
new file mode 100644
index 00000000..7c0cf0ee
--- /dev/null
+++ b/android/text/NonEditableTextGenerator.java
@@ -0,0 +1,138 @@
+package android.text;
+
+import static android.text.Spanned.SPAN_INCLUSIVE_INCLUSIVE;
+
+import android.text.style.BulletSpan;
+
+import java.util.Random;
+
+/**
+ *
+ */
+public class NonEditableTextGenerator {
+
+    enum TextType {
+        STRING,
+        SPANNED,
+        SPANNABLE_BUILDER
+    }
+
+    private boolean mCreateBoring;
+    private TextType mTextType;
+    private int mSequenceLength;
+    private final Random mRandom;
+
+    public NonEditableTextGenerator(Random random) {
+        mRandom = random;
+    }
+
+    public NonEditableTextGenerator setCreateBoring(boolean createBoring) {
+        mCreateBoring = createBoring;
+        return this;
+    }
+
+    public NonEditableTextGenerator setTextType(TextType textType) {
+        mTextType = textType;
+        return this;
+    }
+
+    public NonEditableTextGenerator setSequenceLength(int sequenceLength) {
+        mSequenceLength = sequenceLength;
+        return this;
+    }
+
+    /**
+     * Sample charSequence generated:
+     * NRjPzjvUadHmH ExoEoTqfx pCLw qtndsqfpk AqajVCbgjGZ igIeC dfnXRgA
+     */
+    public CharSequence build() {
+        final RandomCharSequenceGenerator sequenceGenerator = new RandomCharSequenceGenerator(
+                mRandom);
+        if (mSequenceLength > 0) {
+            sequenceGenerator.setSequenceLength(mSequenceLength);
+        }
+
+        final CharSequence charSequence = sequenceGenerator.buildLatinSequence();
+
+        switch (mTextType) {
+            case SPANNED:
+            case SPANNABLE_BUILDER:
+                return createSpannable(charSequence);
+            case STRING:
+            default:
+                return createString(charSequence);
+        }
+    }
+
+    private Spannable createSpannable(CharSequence charSequence) {
+        final Spannable spannable = (mTextType == TextType.SPANNABLE_BUILDER) ?
+                new SpannableStringBuilder(charSequence) : new SpannableString(charSequence);
+
+        if (!mCreateBoring) {
+            // add a paragraph style to make it non boring
+            spannable.setSpan(new BulletSpan(), 0, spannable.length(), SPAN_INCLUSIVE_INCLUSIVE);
+        }
+
+        spannable.setSpan(new Object(), 0, spannable.length(), SPAN_INCLUSIVE_INCLUSIVE);
+        spannable.setSpan(new Object(), 0, 1, SPAN_INCLUSIVE_INCLUSIVE);
+
+        return spannable;
+    }
+
+    private String createString(CharSequence charSequence) {
+        if (mCreateBoring) {
+            return charSequence.toString();
+        } else {
+            // BoringLayout checks to see if there is a surrogate pair and if so tells that
+            // the charSequence is not suitable for boring. Add an emoji to make it non boring.
+            // Emoji is added instead of RTL, since emoji stays in the same run and is a more
+            // common case.
+            return charSequence.toString() + "\uD83D\uDC68\uD83C\uDFFF";
+        }
+    }
+
+    public static class RandomCharSequenceGenerator {
+
+        private static final int DEFAULT_MIN_WORD_LENGTH = 3;
+        private static final int DEFAULT_MAX_WORD_LENGTH = 15;
+        private static final int DEFAULT_SEQUENCE_LENGTH = 256;
+
+        private int mMinWordLength = DEFAULT_MIN_WORD_LENGTH;
+        private int mMaxWordLength = DEFAULT_MAX_WORD_LENGTH;
+        private int mSequenceLength = DEFAULT_SEQUENCE_LENGTH;
+        private final Random mRandom;
+
+        public RandomCharSequenceGenerator(Random random) {
+            mRandom = random;
+        }
+
+        public RandomCharSequenceGenerator setSequenceLength(int sequenceLength) {
+            mSequenceLength = sequenceLength;
+            return this;
+        }
+
+        public CharSequence buildLatinSequence() {
+            final StringBuilder result = new StringBuilder();
+            while (result.length() < mSequenceLength) {
+                // add random word
+                result.append(buildLatinWord());
+                result.append(' ');
+            }
+            return result.substring(0, mSequenceLength);
+        }
+
+        public CharSequence buildLatinWord() {
+            final StringBuilder result = new StringBuilder();
+            // create a random length that is (mMinWordLength + random amount of chars) where
+            // total size is less than mMaxWordLength
+            final int length = mRandom.nextInt(mMaxWordLength - mMinWordLength) + mMinWordLength;
+            while (result.length() < length) {
+                // add random letter
+                int base = mRandom.nextInt(2) == 0 ? 'A' : 'a';
+                result.append(Character.toChars(mRandom.nextInt(26) + base));
+            }
+            return result.toString();
+        }
+    }
+
+}