From 69da2690e5a990987adba8f68dcf3d8a17d1a0fc Mon Sep 17 00:00:00 2001
From: Satoshi Kataoka <satok@google.com>
Date: Thu, 15 Aug 2013 15:36:44 +0900
Subject: [PATCH] Add an API supportsSwitchingToNextInput

To let the system know an IME supports switching to a next input method

Bug: 8364845
Change-Id: Iabf4f106893ee6a262ad0cd44dbec0c661bf0ff2
---
 api/current.txt                               |  1 +
 .../view/inputmethod/InputMethodInfo.java     | 23 ++++++++++++++++++-
 core/res/res/values/attrs.xml                 |  3 +++
 core/res/res/values/public.xml                |  1 +
 4 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/api/current.txt b/api/current.txt
index 394369511e31e..c6e782a5653ab 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -1015,6 +1015,7 @@ package android {
     field public static final int summaryOff = 16843248; // 0x10101f0
     field public static final int summaryOn = 16843247; // 0x10101ef
     field public static final int supportsRtl = 16843695; // 0x10103af
+    field public static final int supportsSwitchingToNextInputMethod = 16843753; // 0x10103e9
     field public static final int supportsUploading = 16843419; // 0x101029b
     field public static final int switchMinWidth = 16843632; // 0x1010370
     field public static final int switchPadding = 16843633; // 0x1010371
diff --git a/core/java/android/view/inputmethod/InputMethodInfo.java b/core/java/android/view/inputmethod/InputMethodInfo.java
index feaab3ea036a1..c440c7bd40c2e 100644
--- a/core/java/android/view/inputmethod/InputMethodInfo.java
+++ b/core/java/android/view/inputmethod/InputMethodInfo.java
@@ -82,10 +82,15 @@ public final class InputMethodInfo implements Parcelable {
     private final boolean mIsAuxIme;
 
     /**
-     * Cavert: mForceDefault must be false for production. This flag is only for test.
+     * Caveat: mForceDefault must be false for production. This flag is only for test.
      */
     private final boolean mForceDefault;
 
+    /**
+     * The flag whether this IME supports ways to switch to a next input method (e.g. globe key.)
+     */
+    private final boolean mSupportsSwitchingToNextInputMethod;
+
     /**
      * Constructor.
      *
@@ -114,6 +119,7 @@ public final class InputMethodInfo implements Parcelable {
         ServiceInfo si = service.serviceInfo;
         mId = new ComponentName(si.packageName, si.name).flattenToShortString();
         boolean isAuxIme = true;
+        boolean supportsSwitchingToNextInputMethod = false; // false as default
         mForceDefault = false;
 
         PackageManager pm = context.getPackageManager();
@@ -149,6 +155,9 @@ public final class InputMethodInfo implements Parcelable {
                     com.android.internal.R.styleable.InputMethod_settingsActivity);
             isDefaultResId = sa.getResourceId(
                     com.android.internal.R.styleable.InputMethod_isDefault, 0);
+            supportsSwitchingToNextInputMethod = sa.getBoolean(
+                    com.android.internal.R.styleable.InputMethod_supportsSwitchingToNextInputMethod,
+                    false);
             sa.recycle();
 
             final int depth = parser.getDepth();
@@ -216,6 +225,7 @@ public final class InputMethodInfo implements Parcelable {
         mSettingsActivityName = settingsActivityComponent;
         mIsDefaultResId = isDefaultResId;
         mIsAuxIme = isAuxIme;
+        mSupportsSwitchingToNextInputMethod = supportsSwitchingToNextInputMethod;
     }
 
     InputMethodInfo(Parcel source) {
@@ -223,6 +233,7 @@ public final class InputMethodInfo implements Parcelable {
         mSettingsActivityName = source.readString();
         mIsDefaultResId = source.readInt();
         mIsAuxIme = source.readInt() == 1;
+        mSupportsSwitchingToNextInputMethod = source.readInt() == 1;
         mService = ResolveInfo.CREATOR.createFromParcel(source);
         source.readTypedList(mSubtypes, InputMethodSubtype.CREATOR);
         mForceDefault = false;
@@ -254,6 +265,7 @@ public final class InputMethodInfo implements Parcelable {
             mSubtypes.addAll(subtypes);
         }
         mForceDefault = forceDefault;
+        mSupportsSwitchingToNextInputMethod = true;
     }
 
     private static ResolveInfo buildDummyResolveInfo(String packageName, String className,
@@ -434,6 +446,14 @@ public final class InputMethodInfo implements Parcelable {
         return mIsAuxIme;
     }
 
+    /**
+     * @return true if this input method supports ways to switch to a next input method.
+     * @hide
+     */
+    public boolean supportsSwitchingToNextInputMethod() {
+        return mSupportsSwitchingToNextInputMethod;
+    }
+
     /**
      * Used to package this object into a {@link Parcel}.
      * 
@@ -446,6 +466,7 @@ public final class InputMethodInfo implements Parcelable {
         dest.writeString(mSettingsActivityName);
         dest.writeInt(mIsDefaultResId);
         dest.writeInt(mIsAuxIme ? 1 : 0);
+        dest.writeInt(mSupportsSwitchingToNextInputMethod ? 1 : 0);
         mService.writeToParcel(dest, flags);
         dest.writeTypedList(mSubtypes);
     }
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 03e9045680315..50ea08b4cdf0b 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -2378,6 +2378,9 @@
         <!-- Set to true in all of the configurations for which this input
              method should be considered an option as the default. -->
         <attr name="isDefault" format="boolean" />
+        <!-- Set to true if this input method supports ways to switch to
+             a next input method (e.g. a globe key.). -->
+        <attr name="supportsSwitchingToNextInputMethod" format="boolean" />
     </declare-styleable>
 
     <!-- This is the subtype of InputMethod. Subtype can describe locales (e.g. en_US, fr_FR...)
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 80c91849103da..f2ec04fa39856 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -2072,5 +2072,6 @@
   <public type="attr" name="isAsciiCapable" />
   <public type="attr" name="customRoots" />
   <public type="attr" name="autoMirrored" />
+  <public type="attr" name="supportsSwitchingToNextInputMethod" />
 
 </resources>