Remove preRender input

Cleanup unused pre-render input. We've no plans to enable it.
It adds unnecessary complexity.

Bug: 159201509
Bug: 167948123
Bug: 118599175

Test: atest CtsInputMethodTestCases

Change-Id: I32fe3759b9aeb56c868f9abf42bab124b9b83374

core/java/android/inputmethodservice/IInputMethodWrapper.java

@@ -213,8 +213,7 @@ class IInputMethodWrapper extends IInputMethod.Stub
                         ic,
                         info,
                         moreArgs.argi1 == 1 /* restarting */,
-                        startInputToken,
-                        moreArgs.argi2 == 1 /* shouldPreRenderIme */);
+                        startInputToken);
                 args.recycle();
                 moreArgs.recycle();
                 return;
@@ -340,14 +339,13 @@ class IInputMethodWrapper extends IInputMethod.Stub
     @Override
     public void startInput(IBinder startInputToken, IInputContext inputContext,
             @InputConnectionInspector.MissingMethodFlags final int missingMethods,
-            EditorInfo attribute, boolean restarting, boolean shouldPreRenderIme) {
+            EditorInfo attribute, boolean restarting) {
         if (mCancellationGroup == null) {
             Log.e(TAG, "startInput must be called after bindInput.");
             mCancellationGroup = new CancellationGroup();
         }
         SomeArgs args = SomeArgs.obtain();
         args.argi1 = restarting ? 1 : 0;
-        args.argi2 = shouldPreRenderIme ? 1 : 0;
         args.argi3 = missingMethods;
         mCaller.executeOrSendMessage(mCaller.obtainMessageOOOOO(DO_START_INPUT, startInputToken,
                 inputContext, attribute, mCancellationGroup, args));

core/java/android/inputmethodservice/InputMethodService.java

@@ -19,7 +19,6 @@ package android.inputmethodservice;
 import static android.graphics.Color.TRANSPARENT;
 import static android.inputmethodservice.InputMethodServiceProto.CANDIDATES_VIEW_STARTED;
 import static android.inputmethodservice.InputMethodServiceProto.CANDIDATES_VISIBILITY;
-import static android.inputmethodservice.InputMethodServiceProto.CAN_PRE_RENDER;
 import static android.inputmethodservice.InputMethodServiceProto.CONFIGURATION;
 import static android.inputmethodservice.InputMethodServiceProto.DECOR_VIEW_VISIBLE;
 import static android.inputmethodservice.InputMethodServiceProto.DECOR_VIEW_WAS_VISIBLE;
@@ -33,7 +32,6 @@ import static android.inputmethodservice.InputMethodServiceProto.INPUT_VIEW_STAR
 import static android.inputmethodservice.InputMethodServiceProto.IN_SHOW_WINDOW;
 import static android.inputmethodservice.InputMethodServiceProto.IS_FULLSCREEN;
 import static android.inputmethodservice.InputMethodServiceProto.IS_INPUT_VIEW_SHOWN;
-import static android.inputmethodservice.InputMethodServiceProto.IS_PRE_RENDERED;
 import static android.inputmethodservice.InputMethodServiceProto.InsetsProto.CONTENT_TOP_INSETS;
 import static android.inputmethodservice.InputMethodServiceProto.InsetsProto.TOUCHABLE_INSETS;
 import static android.inputmethodservice.InputMethodServiceProto.InsetsProto.TOUCHABLE_REGION;
@@ -420,10 +418,6 @@ public class InputMethodService extends AbstractInputMethodService {
     boolean mDecorViewVisible;
     boolean mDecorViewWasVisible;
     boolean mInShowWindow;
-    // True if pre-rendering of IME views/window is supported.
-    boolean mCanPreRender;
-    // If IME is pre-rendered.
-    boolean mIsPreRendered;
     // IME window visibility.
     // Use (mDecorViewVisible && mWindowVisible) to check if IME is visible to the user.
     boolean mWindowVisible;
@@ -671,10 +665,8 @@ public class InputMethodService extends AbstractInputMethodService {
         @Override
         public final void dispatchStartInputWithToken(@Nullable InputConnection inputConnection,
                 @NonNull EditorInfo editorInfo, boolean restarting,
-                @NonNull IBinder startInputToken, boolean shouldPreRenderIme) {
+                @NonNull IBinder startInputToken) {
             mPrivOps.reportStartInput(startInputToken);
-            mCanPreRender = shouldPreRenderIme;
-            if (DEBUG) Log.v(TAG, "Will Pre-render IME: " + mCanPreRender);
 
             if (restarting) {
                 restartInput(inputConnection, editorInfo);
@@ -711,22 +703,12 @@ public class InputMethodService extends AbstractInputMethodService {
                         + " Use requestHideSelf(int) itself");
                 return;
             }
-            final boolean wasVisible = mIsPreRendered
-                    ? mDecorViewVisible && mWindowVisible : isInputViewShown();
+            final boolean wasVisible = isInputViewShown();
             applyVisibilityInInsetsConsumerIfNecessary(false /* setVisible */);
-            if (mIsPreRendered) {
-                if (DEBUG) {
-                    Log.v(TAG, "Making IME window invisible");
-                }
-                setImeWindowStatus(IME_ACTIVE | IME_INVISIBLE, mBackDisposition);
-                onPreRenderedWindowVisibilityChanged(false /* setVisible */);
-            } else {
-                mShowInputFlags = 0;
-                mShowInputRequested = false;
-                doHideWindow();
-            }
-            final boolean isVisible = mIsPreRendered
-                    ? mDecorViewVisible && mWindowVisible : isInputViewShown();
+            mShowInputFlags = 0;
+            mShowInputRequested = false;
+            doHideWindow();
+            final boolean isVisible = isInputViewShown();
             final boolean visibilityChanged = isVisible != wasVisible;
             if (resultReceiver != null) {
                 resultReceiver.send(visibilityChanged
@@ -765,23 +747,15 @@ public class InputMethodService extends AbstractInputMethodService {
                         + " Use requestShowSelf(int) itself");
                 return;
             }
-            final boolean wasVisible = mIsPreRendered
-                    ? mDecorViewVisible && mWindowVisible : isInputViewShown();
+            final boolean wasVisible = isInputViewShown();
             if (dispatchOnShowInputRequested(flags, false)) {
-                if (mIsPreRendered) {
-                    if (DEBUG) {
-                        Log.v(TAG, "Making IME window visible");
-                    }
-                    onPreRenderedWindowVisibilityChanged(true /* setVisible */);
-                } else {
-                    showWindow(true);
-                }
+
+                showWindow(true);
                 applyVisibilityInInsetsConsumerIfNecessary(true /* setVisible */);
             }
             // If user uses hard keyboard, IME button should always be shown.
             setImeWindowStatus(mapToImeWindowStatus(), mBackDisposition);
-            final boolean isVisible = mIsPreRendered
-                    ? mDecorViewVisible && mWindowVisible : isInputViewShown();
+            final boolean isVisible = isInputViewShown();
             final boolean visibilityChanged = isVisible != wasVisible;
             if (resultReceiver != null) {
                 resultReceiver.send(visibilityChanged
@@ -1788,7 +1762,7 @@ public class InputMethodService extends AbstractInputMethodService {
      * applied by {@link #updateInputViewShown()}.
      */
     public boolean isInputViewShown() {
-        return mCanPreRender ? mWindowVisible : mIsInputViewShown && mDecorViewVisible;
+        return mDecorViewVisible;
     }
 
     /**
@@ -2141,10 +2115,9 @@ public class InputMethodService extends AbstractInputMethodService {
 
         mDecorViewWasVisible = mDecorViewVisible;
         mInShowWindow = true;
-        boolean isPreRenderedAndInvisible = mIsPreRendered && !mWindowVisible;
         final int previousImeWindowStatus =
                 (mDecorViewVisible ? IME_ACTIVE : 0) | (isInputViewShown()
-                        ? (isPreRenderedAndInvisible ? IME_INVISIBLE : IME_VISIBLE) : 0);
+                        ? (!mWindowVisible ? IME_INVISIBLE : IME_VISIBLE) : 0);
         startViews(prepareWindow(showInput));
         final int nextImeWindowStatus = mapToImeWindowStatus();
         if (previousImeWindowStatus != nextImeWindowStatus) {
@@ -2153,14 +2126,7 @@ public class InputMethodService extends AbstractInputMethodService {
 
         // compute visibility
         onWindowShown();
-        mIsPreRendered = mCanPreRender;
-        if (mIsPreRendered) {
-            onPreRenderedWindowVisibilityChanged(true /* setVisible */);
-        } else {
-            // Pre-rendering not supported.
-            if (DEBUG) Log.d(TAG, "No pre-rendering supported");
-            mWindowVisible = true;
-        }
+        mWindowVisible = true;
 
         // request draw for the IME surface.
         // When IME is not pre-rendered, this will actually show the IME.
@@ -2168,22 +2134,10 @@ public class InputMethodService extends AbstractInputMethodService {
             if (DEBUG) Log.v(TAG, "showWindow: draw decorView!");
             mWindow.show();
         }
-        maybeNotifyPreRendered();
         mDecorViewWasVisible = true;
         mInShowWindow = false;
     }
 
-    /**
-     * Notify {@link android.view.ImeInsetsSourceConsumer} if IME has been pre-rendered
-     * for current EditorInfo, when pre-rendering is enabled.
-     */
-    private void maybeNotifyPreRendered() {
-        if (!mCanPreRender || !mIsPreRendered) {
-            return;
-        }
-        mPrivOps.reportPreRendered(getCurrentInputEditorInfo());
-    }
-
 
     private boolean prepareWindow(boolean showInput) {
         boolean doShowInput = false;
@@ -2227,16 +2181,6 @@ public class InputMethodService extends AbstractInputMethodService {
         if (doShowInput) startExtractingText(false);
     }
 
-    private void onPreRenderedWindowVisibilityChanged(boolean setVisible) {
-        mWindowVisible = setVisible;
-        mShowInputFlags = setVisible ? mShowInputFlags : 0;
-        mShowInputRequested = setVisible;
-        mDecorViewVisible = setVisible;
-        if (setVisible) {
-            onWindowShown();
-        }
-    }
-
     /**
      * Applies the IME visibility in {@link android.view.ImeInsetsSourceConsumer}.
      *
@@ -2267,7 +2211,6 @@ public class InputMethodService extends AbstractInputMethodService {
 
     public void hideWindow() {
         if (DEBUG) Log.v(TAG, "CALL: hideWindow");
-        mIsPreRendered = false;
         mWindowVisible = false;
         finishViews(false /* finishingInput */);
         if (mDecorViewVisible) {
@@ -2374,32 +2317,6 @@ public class InputMethodService extends AbstractInputMethodService {
                 mCandidatesViewStarted = true;
                 onStartCandidatesView(mInputEditorInfo, restarting);
             }
-        } else if (mCanPreRender && mInputEditorInfo != null && mStartedInputConnection != null) {
-            // Pre-render IME views and window when real EditorInfo is available.
-            // pre-render IME window and keep it invisible.
-            if (DEBUG) Log.v(TAG, "Pre-Render IME for " + mInputEditorInfo.fieldName);
-            if (mInShowWindow) {
-                Log.w(TAG, "Re-entrance in to showWindow");
-                return;
-            }
-
-            mDecorViewWasVisible = mDecorViewVisible;
-            mInShowWindow = true;
-            startViews(prepareWindow(true /* showInput */));
-
-            // compute visibility
-            mIsPreRendered = true;
-            onPreRenderedWindowVisibilityChanged(false /* setVisible */);
-
-            // request draw for the IME surface.
-            // When IME is not pre-rendered, this will actually show the IME.
-            if (DEBUG) Log.v(TAG, "showWindow: draw decorView!");
-            mWindow.show();
-            maybeNotifyPreRendered();
-            mDecorViewWasVisible = true;
-            mInShowWindow = false;
-        } else {
-            mIsPreRendered = false;
         }
     }
     
@@ -3299,9 +3216,7 @@ public class InputMethodService extends AbstractInputMethodService {
 
     private int mapToImeWindowStatus() {
         return IME_ACTIVE
-                | (isInputViewShown()
-                        ? (mCanPreRender ? (mWindowVisible ? IME_VISIBLE : IME_INVISIBLE)
-                        : IME_VISIBLE) : 0);
+                | (isInputViewShown() ? IME_VISIBLE : 0);
     }
 
     private boolean isAutomotive() {
@@ -3339,8 +3254,6 @@ public class InputMethodService extends AbstractInputMethodService {
 
         p.println("  mShowInputRequested=" + mShowInputRequested
                 + " mLastShowInputRequested=" + mLastShowInputRequested
-                + " mCanPreRender=" + mCanPreRender
-                + " mIsPreRendered=" + mIsPreRendered
                 + " mShowInputFlags=0x" + Integer.toHexString(mShowInputFlags));
         p.println("  mCandidatesVisibility=" + mCandidatesVisibility
                 + " mFullscreenApplied=" + mFullscreenApplied
@@ -3391,8 +3304,6 @@ public class InputMethodService extends AbstractInputMethodService {
         }
         proto.write(SHOW_INPUT_REQUESTED, mShowInputRequested);
         proto.write(LAST_SHOW_INPUT_REQUESTED, mLastShowInputRequested);
-        proto.write(CAN_PRE_RENDER, mCanPreRender);
-        proto.write(IS_PRE_RENDERED, mIsPreRendered);
         proto.write(SHOW_INPUT_FLAGS, mShowInputFlags);
         proto.write(CANDIDATES_VISIBILITY, mCandidatesVisibility);
         proto.write(FULLSCREEN_APPLIED, mFullscreenApplied);