Show toast when handwriting in unsupported view (bb225ec3) · Commits · e / os / android_frameworks_base

core/java/android/text/flags/flags.aconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -126,3 +126,10 @@ flag {
		description: "When handwriting is initiated in an unfocused TextView, cursor is placed at the end of the closest paragraph."
		bug: "323376217"
		}

		flag {
		name: "handwriting_unsupported_message"
		namespace: "text"
		description: "Feature flag for showing error message when user tries stylus handwriting on a text field which doesn't support it"
		bug: "297962571"
		}

core/java/android/view/HandwritingInitiator.java

+35 −6

Original line number	Diff line number	Diff line
		@@ -34,7 +34,9 @@ import android.view.inputmethod.InputMethodManager;
		import android.widget.EditText;
		import android.widget.Editor;
		import android.widget.TextView;
		import android.widget.Toast;

		import com.android.internal.R;
		import com.android.internal.annotations.VisibleForTesting;

		import java.lang.ref.WeakReference;
		@@ -223,7 +225,24 @@ public class HandwritingInitiator {
		View candidateView = findBestCandidateView(mState.mStylusDownX,
		mState.mStylusDownY, /* isHover */ false);
		if (candidateView != null && candidateView.isEnabled()) {
		if (candidateView == getConnectedOrFocusedView()) {
		if (shouldShowHandwritingUnavailableMessageForView(candidateView)) {
		int messagesResId = (candidateView instanceof TextView tv
		&& tv.isAnyPasswordInputType())
		? R.string.error_handwriting_unsupported_password
		: R.string.error_handwriting_unsupported;
		Toast.makeText(candidateView.getContext(), messagesResId,
		Toast.LENGTH_SHORT).show();
		if (!candidateView.hasFocus()) {
		requestFocusWithoutReveal(candidateView);
		}
		mImm.showSoftInput(candidateView, 0);
		mState.mHandled = true;
		mState.mShouldInitHandwriting = false;
		motionEvent.setAction((motionEvent.getAction()
		& MotionEvent.ACTION_POINTER_INDEX_MASK)
		\| MotionEvent.ACTION_CANCEL);
		candidateView.getRootView().dispatchTouchEvent(motionEvent);
		} else if (candidateView == getConnectedOrFocusedView()) {
		if (!mInitiateWithoutConnection && !candidateView.hasFocus()) {
		requestFocusWithoutReveal(candidateView);
		}
		@@ -484,6 +503,15 @@ public class HandwritingInitiator {
		return view.isStylusHandwritingAvailable();
		}

		private static boolean shouldShowHandwritingUnavailableMessageForView(@NonNull View view) {
		return (view instanceof TextView) && !shouldTriggerStylusHandwritingForView(view);
		}

		private static boolean shouldTriggerHandwritingOrShowUnavailableMessageForView(
		@NonNull View view) {
		return (view instanceof TextView) \|\| shouldTriggerStylusHandwritingForView(view);
		}

		/**
		* Returns the pointer icon for the motion event, or null if it doesn't specify the icon.
		* This gives HandwritingInitiator a chance to show the stylus handwriting icon over a
		@@ -491,7 +519,7 @@ public class HandwritingInitiator {
		*/
		public PointerIcon onResolvePointerIcon(Context context, MotionEvent event) {
		final View hoverView = findHoverView(event);
		if (hoverView == null) {
		if (hoverView == null \|\| !shouldTriggerStylusHandwritingForView(hoverView)) {
		return null;
		}

		@@ -594,7 +622,7 @@ public class HandwritingInitiator {

		/**
		* Given the location of the stylus event, return the best candidate view to initialize
		* handwriting mode.
		* handwriting mode or show the handwriting unavailable error message.
		*
		* @param x the x coordinates of the stylus event, in the coordinates of the window.
		* @param y the y coordinates of the stylus event, in the coordinates of the window.
		@@ -610,7 +638,8 @@ public class HandwritingInitiator {
		Rect handwritingArea = mTempRect;
		if (getViewHandwritingArea(connectedOrFocusedView, handwritingArea)
		&& isInHandwritingArea(handwritingArea, x, y, connectedOrFocusedView, isHover)
		&& shouldTriggerStylusHandwritingForView(connectedOrFocusedView)) {
		&& shouldTriggerHandwritingOrShowUnavailableMessageForView(
		connectedOrFocusedView)) {
		if (!isHover && mState != null) {
		mState.mStylusDownWithinEditorBounds =
		contains(handwritingArea, x, y, 0f, 0f, 0f, 0f);
		@@ -628,7 +657,7 @@ public class HandwritingInitiator {
		final View view = viewInfo.getView();
		final Rect handwritingArea = viewInfo.getHandwritingArea();
		if (!isInHandwritingArea(handwritingArea, x, y, view, isHover)
		\|\| !shouldTriggerStylusHandwritingForView(view)) {
		\|\| !shouldTriggerHandwritingOrShowUnavailableMessageForView(view)) {
		continue;
		}

		@@ -856,7 +885,7 @@ public class HandwritingInitiator {
		/** The helper method to check if the given view is still active for handwriting. */
		private static boolean isViewActive(@Nullable View view) {
		return view != null && view.isAttachedToWindow() && view.isAggregatedVisible()
		&& view.shouldInitiateHandwriting();
		&& view.shouldTrackHandwritingArea();
		}

		private CursorAnchorInfo getCursorAnchorInfoForConnectionless(View view) {

core/java/android/view/View.java

+12 −2

Original line number	Diff line number	Diff line
		@@ -12673,7 +12673,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		if (getSystemGestureExclusionRects().isEmpty()
		&& collectPreferKeepClearRects().isEmpty()
		&& collectUnrestrictedPreferKeepClearRects().isEmpty()
		&& (info.mHandwritingArea == null \|\| !shouldInitiateHandwriting())) {
		&& (info.mHandwritingArea == null \|\| !shouldTrackHandwritingArea())) {
		if (info.mPositionUpdateListener != null) {
		mRenderNode.removePositionUpdateListener(info.mPositionUpdateListener);
		info.mPositionUpdateListener = null;
		@@ -13040,7 +13040,7 @@ public class View implements Drawable.Callback, KeyEvent.Callback,

		void updateHandwritingArea() {
		// If autoHandwritingArea is not enabled, do nothing.
		if (!shouldInitiateHandwriting()) return;
		if (!shouldTrackHandwritingArea()) return;
		final AttachInfo ai = mAttachInfo;
		if (ai != null) {
		ai.mViewRootImpl.getHandwritingInitiator().updateHandwritingAreasForView(this);
		@@ -13057,6 +13057,16 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		return isAutoHandwritingEnabled() \|\| getHandwritingDelegatorCallback() != null;
		}

		/**
		* Returns whether the handwriting initiator should track the handwriting area for this view,
		* either to initiate handwriting mode, or to prepare handwriting delegation, or to show the
		* handwriting unsupported message.
		* @hide
		*/
		public boolean shouldTrackHandwritingArea() {
		return shouldInitiateHandwriting();
		}

		/**
		* Sets a callback which should be called when a stylus {@link MotionEvent} occurs within this
		* view's bounds. The callback will be called from the UI thread.

core/java/android/widget/TextView.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -13563,6 +13563,15 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		return super.isAutoHandwritingEnabled() && !isAnyPasswordInputType();
		}

		/** @hide */
		@Override
		public boolean shouldTrackHandwritingArea() {
		// The handwriting initiator tracks all editable TextViews regardless of whether handwriting
		// is supported, so that it can show an error message for unsupported editable TextViews.
		return super.shouldTrackHandwritingArea()
		\|\| (Flags.handwritingUnsupportedMessage() && onCheckIsTextEditor());
		}

		/** @hide */
		@Override
		public boolean isStylusHandwritingAvailable() {

core/res/res/values/strings.xml

+6 −0

Original line number	Diff line number	Diff line
		@@ -3244,6 +3244,12 @@
		<!-- Title for EditText context menu [CHAR LIMIT=20] -->
		<string name="editTextMenuTitle">Text actions</string>

		<!-- Error shown when a user uses a stylus to try handwriting on a text field which doesn't support stylus handwriting. [CHAR LIMIT=TOAST] -->
		<string name="error_handwriting_unsupported">Handwriting is not supported in this field</string>

		<!-- Error shown when a user uses a stylus to try handwriting on a password text field which doesn't support stylus handwriting. [CHAR LIMIT=TOAST] -->
		<string name="error_handwriting_unsupported_password">Handwriting is not supported in password fields</string>

		<!-- Content description of the back button for accessibility (not shown on the screen). [CHAR LIMIT=NONE] -->
		<string name="input_method_nav_back_button_desc">Back</string>
		<!-- Content description of the switch input method button for accessibility (not shown on the screen). [CHAR LIMIT=NONE] -->