Merge "Make text optional for InsertGesture"

import android.graphics.PointF;

import android.os.Parcel;

import android.os.Parcelable;

import android.text.TextUtils;

import android.widget.TextView;

import androidx.annotation.Nullable;

        mPoint = source.readTypedObject(PointF.CREATOR);

    }

    /** Returns the text that will be inserted at {@link #getInsertionPoint()} **/

    /** Returns the text that will be inserted at {@link #getInsertionPoint()}. When text is

     * empty, cursor should be moved the insertion point. **/

    @NonNull

    public String getTextToInsert() {

        return mTextToInsert;

        private PointF mPoint;

        private String mFallbackText;

        /** set the text that will be inserted at {@link #setInsertionPoint(PointF)} **/

        /**

         * Set the text that will be inserted at {@link #setInsertionPoint(PointF)}. When set with

         * an empty string, cursor will be moved to {@link #getInsertionPoint()} and no text

         * would be inserted.

         */

        @NonNull

        @SuppressLint("MissingGetterMatchingBuilder")

        public Builder setTextToInsert(@NonNull String text) {

            if (mPoint == null) {

                throw new IllegalArgumentException("Insertion point must be set.");

            }

            if (TextUtils.isEmpty(mText)) {

                throw new IllegalArgumentException("Text to insert must be non-empty.");

            if (mText == null) {

                throw new IllegalArgumentException("Text to insert must be set.");

            }

            return new InsertGesture(mText, mPoint, mFallbackText);

        }