From 11b14e3996d3602155d6a61afb286e5bc0941a1f Mon Sep 17 00:00:00 2001
From: Deepanshu Gupta <deepanshu@google.com>
Date: Sat, 2 Aug 2014 13:16:24 -0700
Subject: [PATCH] LayoutLib: Use ICU's line break algo. [DO NOT MERGE]

Change-Id: I7e5b0ab7423a72f5a4b0e1163d0a537f0b03ba07
(cherry picked from commit 760f6394d0f65fbb5365186e8e068d53c506b653)
---
 .../android/text/StaticLayout_Delegate.java   | 55 +++++++++++++++++++
 .../tools/layoutlib/create/CreateInfo.java    |  1 +
 2 files changed, 56 insertions(+)
 create mode 100644 tools/layoutlib/bridge/src/android/text/StaticLayout_Delegate.java

diff --git a/tools/layoutlib/bridge/src/android/text/StaticLayout_Delegate.java b/tools/layoutlib/bridge/src/android/text/StaticLayout_Delegate.java
new file mode 100644
index 0000000000000..5a467b20cdd3d
--- /dev/null
+++ b/tools/layoutlib/bridge/src/android/text/StaticLayout_Delegate.java
@@ -0,0 +1,55 @@
+package android.text;
+
+import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
+
+import java.text.CharacterIterator;
+import java.util.Arrays;
+import java.util.Locale;
+
+import com.ibm.icu.lang.UCharacter;
+import com.ibm.icu.text.BreakIterator;
+import com.ibm.icu.util.ULocale;
+import javax.swing.text.Segment;
+
+/**
+ * Delegate that provides implementation for native methods in {@link android.text.StaticLayout}
+ *
+ * Through the layoutlib_create tool, selected methods of Handler have been replaced
+ * by calls to methods of the same name in this delegate class.
+ *
+ */
+public class StaticLayout_Delegate {
+
+    /**
+     * Fills the recycle array with positions that are suitable to break the text at. The array
+     * must be terminated by '-1'.
+     */
+    @LayoutlibDelegate
+    /*package*/ static int[] nLineBreakOpportunities(String locale, char[] text, int length,
+            int[] recycle) {
+        BreakIterator iterator = BreakIterator.getLineInstance(new ULocale(locale));
+        Segment segment = new Segment(text, 0, length);
+        iterator.setText(segment);
+        if (recycle == null) {
+            // Because 42 is the answer to everything.
+            recycle = new int[42];
+        }
+        int breakOpp = iterator.first();
+        recycle[0] = breakOpp;
+        //noinspection ConstantConditions
+        assert BreakIterator.DONE == -1;
+        for (int i = 1; breakOpp != BreakIterator.DONE; ++i) {
+            if (i >= recycle.length) {
+                recycle = doubleSize(recycle);
+            }
+            assert (i < recycle.length);
+            breakOpp = iterator.next();
+            recycle[i] = breakOpp;
+        }
+        return recycle;
+    }
+
+    private static int[] doubleSize(int[] array) {
+        return Arrays.copyOf(array, array.length * 2);
+    }
+}
diff --git a/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java b/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
index 4705dec8fed9f..515efd4850fb3 100644
--- a/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
+++ b/tools/layoutlib/create/src/com/android/tools/layoutlib/create/CreateInfo.java
@@ -193,6 +193,7 @@ public final class CreateInfo implements ICreateInfo {
         "android.os.SystemClock",
         "android.os.SystemProperties",
         "android.text.AndroidBidi",
+        "android.text.StaticLayout",
         "android.text.format.Time",
         "android.util.FloatMath",
         "android.view.Display",