/*
 * Copyright 2026 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
// Generated by the protocol buffer compiler.  DO NOT EDIT!
// NO CHECKED-IN PROTOBUF GENCODE
// source: google/apps/card/v1/card.proto
// Protobuf Java Version: 4.33.2

package com.google.apps.card.v1;

/**
 *
 *
 * <pre>
 * A text, icon, or text and icon button that users can click. For an example in
 * Google Chat apps, see
 * [Add a
 * button](https://developers.google.com/workspace/chat/design-interactive-card-dialog#add_a_button).
 *
 * To make an image a clickable button, specify an
 * [`Image`][google.apps.card.v1.Image] (not an
 * [`ImageComponent`][google.apps.card.v1.ImageComponent]) and set an
 * `onClick` action.
 *
 * [Google Workspace
 * add-ons and Chat apps](https://developers.google.com/workspace/extend):
 * </pre>
 *
 * Protobuf type {@code google.apps.card.v1.Button}
 */
@com.google.protobuf.Generated
public final class Button extends com.google.protobuf.GeneratedMessage
    implements
    // @@protoc_insertion_point(message_implements:google.apps.card.v1.Button)
    ButtonOrBuilder {
  private static final long serialVersionUID = 0L;

  static {
    com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
        com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
        /* major= */ 4,
        /* minor= */ 33,
        /* patch= */ 2,
        /* suffix= */ "",
        "Button");
  }

  // Use Button.newBuilder() to construct.
  private Button(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
    super(builder);
  }

  private Button() {
    text_ = "";
    altText_ = "";
    type_ = 0;
  }

  public static final com.google.protobuf.Descriptors.Descriptor getDescriptor() {
    return com.google.apps.card.v1.CardProto.internal_static_google_apps_card_v1_Button_descriptor;
  }

  @java.lang.Override
  protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
      internalGetFieldAccessorTable() {
    return com.google.apps.card.v1.CardProto
        .internal_static_google_apps_card_v1_Button_fieldAccessorTable
        .ensureFieldAccessorsInitialized(
            com.google.apps.card.v1.Button.class, com.google.apps.card.v1.Button.Builder.class);
  }

  /**
   *
   *
   * <pre>
   * Optional. The
   * [type](https://m3.material.io/components/all-buttons#9134ac95-678e-49ae-a50a-e71948011b05)
   * of a button. If `color` field is set, the `type` is forced to `FILLED`.
   *
   * [Google Chat apps](https://developers.google.com/workspace/chat):
   * </pre>
   *
   * Protobuf enum {@code google.apps.card.v1.Button.Type}
   */
  public enum Type implements com.google.protobuf.ProtocolMessageEnum {
    /**
     *
     *
     * <pre>
     * Don't use. Unspecified.
     * </pre>
     *
     * <code>TYPE_UNSPECIFIED = 0;</code>
     */
    TYPE_UNSPECIFIED(0),
    /**
     *
     *
     * <pre>
     * Outlined buttons are medium-emphasis buttons. They usually contain
     * actions that are important, but aren’t the primary action in a Chat app
     * or an add-on.
     * </pre>
     *
     * <code>OUTLINED = 1;</code>
     */
    OUTLINED(1),
    /**
     *
     *
     * <pre>
     * A filled button has a container with a solid color. It has the most
     * visual impact and is recommended for the important and primary action in
     * a Chat app or an add-on.
     * </pre>
     *
     * <code>FILLED = 2;</code>
     */
    FILLED(2),
    /**
     *
     *
     * <pre>
     * A filled tonal button is an alternative middle ground between filled and
     * outlined buttons. They’re useful in contexts where a lower-priority
     * button requires slightly more emphasis than an outline button would give.
     * </pre>
     *
     * <code>FILLED_TONAL = 3;</code>
     */
    FILLED_TONAL(3),
    /**
     *
     *
     * <pre>
     * A button does not have an invisible container in its default state. It is
     * often used for the lowest priority actions, especially when presenting
     * multiple options.
     * </pre>
     *
     * <code>BORDERLESS = 4;</code>
     */
    BORDERLESS(4),
    UNRECOGNIZED(-1),
    ;

    static {
      com.google.protobuf.RuntimeVersion.validateProtobufGencodeVersion(
          com.google.protobuf.RuntimeVersion.RuntimeDomain.PUBLIC,
          /* major= */ 4,
          /* minor= */ 33,
          /* patch= */ 2,
          /* suffix= */ "",
          "Type");
    }

    /**
     *
     *
     * <pre>
     * Don't use. Unspecified.
     * </pre>
     *
     * <code>TYPE_UNSPECIFIED = 0;</code>
     */
    public static final int TYPE_UNSPECIFIED_VALUE = 0;

    /**
     *
     *
     * <pre>
     * Outlined buttons are medium-emphasis buttons. They usually contain
     * actions that are important, but aren’t the primary action in a Chat app
     * or an add-on.
     * </pre>
     *
     * <code>OUTLINED = 1;</code>
     */
    public static final int OUTLINED_VALUE = 1;

    /**
     *
     *
     * <pre>
     * A filled button has a container with a solid color. It has the most
     * visual impact and is recommended for the important and primary action in
     * a Chat app or an add-on.
     * </pre>
     *
     * <code>FILLED = 2;</code>
     */
    public static final int FILLED_VALUE = 2;

    /**
     *
     *
     * <pre>
     * A filled tonal button is an alternative middle ground between filled and
     * outlined buttons. They’re useful in contexts where a lower-priority
     * button requires slightly more emphasis than an outline button would give.
     * </pre>
     *
     * <code>FILLED_TONAL = 3;</code>
     */
    public static final int FILLED_TONAL_VALUE = 3;

    /**
     *
     *
     * <pre>
     * A button does not have an invisible container in its default state. It is
     * often used for the lowest priority actions, especially when presenting
     * multiple options.
     * </pre>
     *
     * <code>BORDERLESS = 4;</code>
     */
    public static final int BORDERLESS_VALUE = 4;

    public final int getNumber() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalArgumentException(
            "Can't get the number of an unknown enum value.");
      }
      return value;
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     * @deprecated Use {@link #forNumber(int)} instead.
     */
    @java.lang.Deprecated
    public static Type valueOf(int value) {
      return forNumber(value);
    }

    /**
     * @param value The numeric wire value of the corresponding enum entry.
     * @return The enum associated with the given numeric wire value.
     */
    public static Type forNumber(int value) {
      switch (value) {
        case 0:
          return TYPE_UNSPECIFIED;
        case 1:
          return OUTLINED;
        case 2:
          return FILLED;
        case 3:
          return FILLED_TONAL;
        case 4:
          return BORDERLESS;
        default:
          return null;
      }
    }

    public static com.google.protobuf.Internal.EnumLiteMap<Type> internalGetValueMap() {
      return internalValueMap;
    }

    private static final com.google.protobuf.Internal.EnumLiteMap<Type> internalValueMap =
        new com.google.protobuf.Internal.EnumLiteMap<Type>() {
          public Type findValueByNumber(int number) {
            return Type.forNumber(number);
          }
        };

    public final com.google.protobuf.Descriptors.EnumValueDescriptor getValueDescriptor() {
      if (this == UNRECOGNIZED) {
        throw new java.lang.IllegalStateException(
            "Can't get the descriptor of an unrecognized enum value.");
      }
      return getDescriptor().getValues().get(ordinal());
    }

    public final com.google.protobuf.Descriptors.EnumDescriptor getDescriptorForType() {
      return getDescriptor();
    }

    public static com.google.protobuf.Descriptors.EnumDescriptor getDescriptor() {
      return com.google.apps.card.v1.Button.getDescriptor().getEnumTypes().get(0);
    }

    private static final Type[] VALUES = values();

    public static Type valueOf(com.google.protobuf.Descriptors.EnumValueDescriptor desc) {
      if (desc.getType() != getDescriptor()) {
        throw new java.lang.IllegalArgumentException("EnumValueDescriptor is not for this type.");
      }
      if (desc.getIndex() == -1) {
        return UNRECOGNIZED;
      }
      return VALUES[desc.getIndex()];
    }

    private final int value;

    private Type(int value) {
      this.value = value;
    }

    // @@protoc_insertion_point(enum_scope:google.apps.card.v1.Button.Type)
  }

  private int bitField0_;
  public static final int TEXT_FIELD_NUMBER = 1;

  @SuppressWarnings("serial")
  private volatile java.lang.Object text_ = "";

  /**
   *
   *
   * <pre>
   * The text displayed inside the button.
   * </pre>
   *
   * <code>string text = 1;</code>
   *
   * @return The text.
   */
  @java.lang.Override
  public java.lang.String getText() {
    java.lang.Object ref = text_;
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      java.lang.String s = bs.toStringUtf8();
      text_ = s;
      return s;
    }
  }

  /**
   *
   *
   * <pre>
   * The text displayed inside the button.
   * </pre>
   *
   * <code>string text = 1;</code>
   *
   * @return The bytes for text.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getTextBytes() {
    java.lang.Object ref = text_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      text_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int ICON_FIELD_NUMBER = 2;
  private com.google.apps.card.v1.Icon icon_;

  /**
   *
   *
   * <pre>
   * An icon displayed inside the button. If both `icon` and `text` are set,
   * then the icon appears before the text.
   * </pre>
   *
   * <code>.google.apps.card.v1.Icon icon = 2;</code>
   *
   * @return Whether the icon field is set.
   */
  @java.lang.Override
  public boolean hasIcon() {
    return ((bitField0_ & 0x00000001) != 0);
  }

  /**
   *
   *
   * <pre>
   * An icon displayed inside the button. If both `icon` and `text` are set,
   * then the icon appears before the text.
   * </pre>
   *
   * <code>.google.apps.card.v1.Icon icon = 2;</code>
   *
   * @return The icon.
   */
  @java.lang.Override
  public com.google.apps.card.v1.Icon getIcon() {
    return icon_ == null ? com.google.apps.card.v1.Icon.getDefaultInstance() : icon_;
  }

  /**
   *
   *
   * <pre>
   * An icon displayed inside the button. If both `icon` and `text` are set,
   * then the icon appears before the text.
   * </pre>
   *
   * <code>.google.apps.card.v1.Icon icon = 2;</code>
   */
  @java.lang.Override
  public com.google.apps.card.v1.IconOrBuilder getIconOrBuilder() {
    return icon_ == null ? com.google.apps.card.v1.Icon.getDefaultInstance() : icon_;
  }

  public static final int COLOR_FIELD_NUMBER = 3;
  private com.google.type.Color color_;

  /**
   *
   *
   * <pre>
   * Optional. The color of the button. If set, the button `type` is set to
   * `FILLED` and the color of `text` and `icon` fields are set to a
   * contrasting color for readability. For example, if the button color is
   * set to blue, any text or icons in the button are set to white.
   *
   * To set the button color, specify a value for the `red`, `green`, and `blue`
   * fields.
   * The value must be a float number between 0 and 1 based on the RGB color
   * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
   * represents the maximum intensity of the color.
   *
   * For example, the following sets the color to red at its maximum intensity:
   *
   * ```
   * "color": {
   * "red": 1,
   * "green": 0,
   * "blue": 0,
   * }
   * ```
   *
   * The `alpha` field is unavailable for button color. If specified, this field
   * is ignored.
   * </pre>
   *
   * <code>.google.type.Color color = 3;</code>
   *
   * @return Whether the color field is set.
   */
  @java.lang.Override
  public boolean hasColor() {
    return ((bitField0_ & 0x00000002) != 0);
  }

  /**
   *
   *
   * <pre>
   * Optional. The color of the button. If set, the button `type` is set to
   * `FILLED` and the color of `text` and `icon` fields are set to a
   * contrasting color for readability. For example, if the button color is
   * set to blue, any text or icons in the button are set to white.
   *
   * To set the button color, specify a value for the `red`, `green`, and `blue`
   * fields.
   * The value must be a float number between 0 and 1 based on the RGB color
   * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
   * represents the maximum intensity of the color.
   *
   * For example, the following sets the color to red at its maximum intensity:
   *
   * ```
   * "color": {
   * "red": 1,
   * "green": 0,
   * "blue": 0,
   * }
   * ```
   *
   * The `alpha` field is unavailable for button color. If specified, this field
   * is ignored.
   * </pre>
   *
   * <code>.google.type.Color color = 3;</code>
   *
   * @return The color.
   */
  @java.lang.Override
  public com.google.type.Color getColor() {
    return color_ == null ? com.google.type.Color.getDefaultInstance() : color_;
  }

  /**
   *
   *
   * <pre>
   * Optional. The color of the button. If set, the button `type` is set to
   * `FILLED` and the color of `text` and `icon` fields are set to a
   * contrasting color for readability. For example, if the button color is
   * set to blue, any text or icons in the button are set to white.
   *
   * To set the button color, specify a value for the `red`, `green`, and `blue`
   * fields.
   * The value must be a float number between 0 and 1 based on the RGB color
   * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
   * represents the maximum intensity of the color.
   *
   * For example, the following sets the color to red at its maximum intensity:
   *
   * ```
   * "color": {
   * "red": 1,
   * "green": 0,
   * "blue": 0,
   * }
   * ```
   *
   * The `alpha` field is unavailable for button color. If specified, this field
   * is ignored.
   * </pre>
   *
   * <code>.google.type.Color color = 3;</code>
   */
  @java.lang.Override
  public com.google.type.ColorOrBuilder getColorOrBuilder() {
    return color_ == null ? com.google.type.Color.getDefaultInstance() : color_;
  }

  public static final int ON_CLICK_FIELD_NUMBER = 4;
  private com.google.apps.card.v1.OnClick onClick_;

  /**
   *
   *
   * <pre>
   * Required. The action to perform when a user clicks the button, such as
   * opening a hyperlink or running a custom function.
   * </pre>
   *
   * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
   *
   * @return Whether the onClick field is set.
   */
  @java.lang.Override
  public boolean hasOnClick() {
    return ((bitField0_ & 0x00000004) != 0);
  }

  /**
   *
   *
   * <pre>
   * Required. The action to perform when a user clicks the button, such as
   * opening a hyperlink or running a custom function.
   * </pre>
   *
   * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
   *
   * @return The onClick.
   */
  @java.lang.Override
  public com.google.apps.card.v1.OnClick getOnClick() {
    return onClick_ == null ? com.google.apps.card.v1.OnClick.getDefaultInstance() : onClick_;
  }

  /**
   *
   *
   * <pre>
   * Required. The action to perform when a user clicks the button, such as
   * opening a hyperlink or running a custom function.
   * </pre>
   *
   * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
   */
  @java.lang.Override
  public com.google.apps.card.v1.OnClickOrBuilder getOnClickOrBuilder() {
    return onClick_ == null ? com.google.apps.card.v1.OnClick.getDefaultInstance() : onClick_;
  }

  public static final int DISABLED_FIELD_NUMBER = 5;
  private boolean disabled_ = false;

  /**
   *
   *
   * <pre>
   * If `true`, the button is displayed in an inactive state and doesn't respond
   * to user actions.
   * </pre>
   *
   * <code>bool disabled = 5;</code>
   *
   * @return The disabled.
   */
  @java.lang.Override
  public boolean getDisabled() {
    return disabled_;
  }

  public static final int ALT_TEXT_FIELD_NUMBER = 6;

  @SuppressWarnings("serial")
  private volatile java.lang.Object altText_ = "";

  /**
   *
   *
   * <pre>
   * The alternative text that's used for accessibility.
   *
   * Set descriptive text that lets users know what the button does. For
   * example, if a button opens a hyperlink, you might write: "Opens a new
   * browser tab and navigates to the Google Chat developer documentation at
   * https://developers.google.com/workspace/chat".
   * </pre>
   *
   * <code>string alt_text = 6;</code>
   *
   * @return The altText.
   */
  @java.lang.Override
  public java.lang.String getAltText() {
    java.lang.Object ref = altText_;
    if (ref instanceof java.lang.String) {
      return (java.lang.String) ref;
    } else {
      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
      java.lang.String s = bs.toStringUtf8();
      altText_ = s;
      return s;
    }
  }

  /**
   *
   *
   * <pre>
   * The alternative text that's used for accessibility.
   *
   * Set descriptive text that lets users know what the button does. For
   * example, if a button opens a hyperlink, you might write: "Opens a new
   * browser tab and navigates to the Google Chat developer documentation at
   * https://developers.google.com/workspace/chat".
   * </pre>
   *
   * <code>string alt_text = 6;</code>
   *
   * @return The bytes for altText.
   */
  @java.lang.Override
  public com.google.protobuf.ByteString getAltTextBytes() {
    java.lang.Object ref = altText_;
    if (ref instanceof java.lang.String) {
      com.google.protobuf.ByteString b =
          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
      altText_ = b;
      return b;
    } else {
      return (com.google.protobuf.ByteString) ref;
    }
  }

  public static final int TYPE_FIELD_NUMBER = 7;
  private int type_ = 0;

  /**
   *
   *
   * <pre>
   * Optional. The type of a button. If unset, button type defaults to
   * `OUTLINED`. If the `color` field is set, the button type is forced to
   * `FILLED` and any value set for this field is ignored.
   * </pre>
   *
   * <code>.google.apps.card.v1.Button.Type type = 7;</code>
   *
   * @return The enum numeric value on the wire for type.
   */
  @java.lang.Override
  public int getTypeValue() {
    return type_;
  }

  /**
   *
   *
   * <pre>
   * Optional. The type of a button. If unset, button type defaults to
   * `OUTLINED`. If the `color` field is set, the button type is forced to
   * `FILLED` and any value set for this field is ignored.
   * </pre>
   *
   * <code>.google.apps.card.v1.Button.Type type = 7;</code>
   *
   * @return The type.
   */
  @java.lang.Override
  public com.google.apps.card.v1.Button.Type getType() {
    com.google.apps.card.v1.Button.Type result =
        com.google.apps.card.v1.Button.Type.forNumber(type_);
    return result == null ? com.google.apps.card.v1.Button.Type.UNRECOGNIZED : result;
  }

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  @java.lang.Override
  public final boolean isInitialized() {
    byte isInitialized = memoizedIsInitialized;
    if (isInitialized == 1) return true;
    if (isInitialized == 0) return false;

    memoizedIsInitialized = 1;
    return true;
  }

  @java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(text_)) {
      com.google.protobuf.GeneratedMessage.writeString(output, 1, text_);
    }
    if (((bitField0_ & 0x00000001) != 0)) {
      output.writeMessage(2, getIcon());
    }
    if (((bitField0_ & 0x00000002) != 0)) {
      output.writeMessage(3, getColor());
    }
    if (((bitField0_ & 0x00000004) != 0)) {
      output.writeMessage(4, getOnClick());
    }
    if (disabled_ != false) {
      output.writeBool(5, disabled_);
    }
    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(altText_)) {
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      output.writeEnum(7, type_);
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    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessage.isStringEmpty(text_)) {
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    if (((bitField0_ & 0x00000001) != 0)) {
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    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
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  @java.lang.Override
  public boolean equals(final java.lang.Object obj) {
    if (obj == this) {
      return true;
    }
    if (!(obj instanceof com.google.apps.card.v1.Button)) {
      return super.equals(obj);
    }
    com.google.apps.card.v1.Button other = (com.google.apps.card.v1.Button) obj;

    if (!getText().equals(other.getText())) return false;
    if (hasIcon() != other.hasIcon()) return false;
    if (hasIcon()) {
      if (!getIcon().equals(other.getIcon())) return false;
    }
    if (hasColor() != other.hasColor()) return false;
    if (hasColor()) {
      if (!getColor().equals(other.getColor())) return false;
    }
    if (hasOnClick() != other.hasOnClick()) return false;
    if (hasOnClick()) {
      if (!getOnClick().equals(other.getOnClick())) return false;
    }
    if (getDisabled() != other.getDisabled()) return false;
    if (!getAltText().equals(other.getAltText())) return false;
    if (type_ != other.type_) return false;
    if (!getUnknownFields().equals(other.getUnknownFields())) return false;
    return true;
  }

  @java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
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  /**
   *
   *
   * <pre>
   * A text, icon, or text and icon button that users can click. For an example in
   * Google Chat apps, see
   * [Add a
   * button](https://developers.google.com/workspace/chat/design-interactive-card-dialog#add_a_button).
   *
   * To make an image a clickable button, specify an
   * [`Image`][google.apps.card.v1.Image] (not an
   * [`ImageComponent`][google.apps.card.v1.ImageComponent]) and set an
   * `onClick` action.
   *
   * [Google Workspace
   * add-ons and Chat apps](https://developers.google.com/workspace/extend):
   * </pre>
   *
   * Protobuf type {@code google.apps.card.v1.Button}
   */
  public static final class Builder extends com.google.protobuf.GeneratedMessage.Builder<Builder>
      implements
      // @@protoc_insertion_point(builder_implements:google.apps.card.v1.Button)
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      text_ = "";
      icon_ = null;
      if (iconBuilder_ != null) {
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        iconBuilder_ = null;
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      color_ = null;
      if (colorBuilder_ != null) {
        colorBuilder_.dispose();
        colorBuilder_ = null;
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      onClick_ = null;
      if (onClickBuilder_ != null) {
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      disabled_ = false;
      altText_ = "";
      type_ = 0;
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    @java.lang.Override
    public com.google.protobuf.Descriptors.Descriptor getDescriptorForType() {
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          .internal_static_google_apps_card_v1_Button_descriptor;
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    @java.lang.Override
    public com.google.apps.card.v1.Button getDefaultInstanceForType() {
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    @java.lang.Override
    public com.google.apps.card.v1.Button build() {
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      if (!result.isInitialized()) {
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    @java.lang.Override
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      if (other.hasIcon()) {
        mergeIcon(other.getIcon());
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        mergeColor(other.getColor());
      }
      if (other.hasOnClick()) {
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      if (other.getDisabled() != false) {
        setDisabled(other.getDisabled());
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            case 26:
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            default:
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        } // while (!done)
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        onChanged();
      } // finally
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    private int bitField0_;

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    /**
     *
     *
     * <pre>
     * The text displayed inside the button.
     * </pre>
     *
     * <code>string text = 1;</code>
     *
     * @return The text.
     */
    public java.lang.String getText() {
      java.lang.Object ref = text_;
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        java.lang.String s = bs.toStringUtf8();
        text_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }

    /**
     *
     *
     * <pre>
     * The text displayed inside the button.
     * </pre>
     *
     * <code>string text = 1;</code>
     *
     * @return The bytes for text.
     */
    public com.google.protobuf.ByteString getTextBytes() {
      java.lang.Object ref = text_;
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        return b;
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        return (com.google.protobuf.ByteString) ref;
      }
    }

    /**
     *
     *
     * <pre>
     * The text displayed inside the button.
     * </pre>
     *
     * <code>string text = 1;</code>
     *
     * @param value The text to set.
     * @return This builder for chaining.
     */
    public Builder setText(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      text_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The text displayed inside the button.
     * </pre>
     *
     * <code>string text = 1;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearText() {
      text_ = getDefaultInstance().getText();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The text displayed inside the button.
     * </pre>
     *
     * <code>string text = 1;</code>
     *
     * @param value The bytes for text to set.
     * @return This builder for chaining.
     */
    public Builder setTextBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      text_ = value;
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }

    private com.google.apps.card.v1.Icon icon_;
    private com.google.protobuf.SingleFieldBuilder<
            com.google.apps.card.v1.Icon,
            com.google.apps.card.v1.Icon.Builder,
            com.google.apps.card.v1.IconOrBuilder>
        iconBuilder_;

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     *
     * @return Whether the icon field is set.
     */
    public boolean hasIcon() {
      return ((bitField0_ & 0x00000002) != 0);
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     *
     * @return The icon.
     */
    public com.google.apps.card.v1.Icon getIcon() {
      if (iconBuilder_ == null) {
        return icon_ == null ? com.google.apps.card.v1.Icon.getDefaultInstance() : icon_;
      } else {
        return iconBuilder_.getMessage();
      }
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public Builder setIcon(com.google.apps.card.v1.Icon value) {
      if (iconBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        icon_ = value;
      } else {
        iconBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public Builder setIcon(com.google.apps.card.v1.Icon.Builder builderForValue) {
      if (iconBuilder_ == null) {
        icon_ = builderForValue.build();
      } else {
        iconBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public Builder mergeIcon(com.google.apps.card.v1.Icon value) {
      if (iconBuilder_ == null) {
        if (((bitField0_ & 0x00000002) != 0)
            && icon_ != null
            && icon_ != com.google.apps.card.v1.Icon.getDefaultInstance()) {
          getIconBuilder().mergeFrom(value);
        } else {
          icon_ = value;
        }
      } else {
        iconBuilder_.mergeFrom(value);
      }
      if (icon_ != null) {
        bitField0_ |= 0x00000002;
        onChanged();
      }
      return this;
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public Builder clearIcon() {
      bitField0_ = (bitField0_ & ~0x00000002);
      icon_ = null;
      if (iconBuilder_ != null) {
        iconBuilder_.dispose();
        iconBuilder_ = null;
      }
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public com.google.apps.card.v1.Icon.Builder getIconBuilder() {
      bitField0_ |= 0x00000002;
      onChanged();
      return internalGetIconFieldBuilder().getBuilder();
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    public com.google.apps.card.v1.IconOrBuilder getIconOrBuilder() {
      if (iconBuilder_ != null) {
        return iconBuilder_.getMessageOrBuilder();
      } else {
        return icon_ == null ? com.google.apps.card.v1.Icon.getDefaultInstance() : icon_;
      }
    }

    /**
     *
     *
     * <pre>
     * An icon displayed inside the button. If both `icon` and `text` are set,
     * then the icon appears before the text.
     * </pre>
     *
     * <code>.google.apps.card.v1.Icon icon = 2;</code>
     */
    private com.google.protobuf.SingleFieldBuilder<
            com.google.apps.card.v1.Icon,
            com.google.apps.card.v1.Icon.Builder,
            com.google.apps.card.v1.IconOrBuilder>
        internalGetIconFieldBuilder() {
      if (iconBuilder_ == null) {
        iconBuilder_ =
            new com.google.protobuf.SingleFieldBuilder<
                com.google.apps.card.v1.Icon,
                com.google.apps.card.v1.Icon.Builder,
                com.google.apps.card.v1.IconOrBuilder>(
                getIcon(), getParentForChildren(), isClean());
        icon_ = null;
      }
      return iconBuilder_;
    }

    private com.google.type.Color color_;
    private com.google.protobuf.SingleFieldBuilder<
            com.google.type.Color, com.google.type.Color.Builder, com.google.type.ColorOrBuilder>
        colorBuilder_;

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     *
     * @return Whether the color field is set.
     */
    public boolean hasColor() {
      return ((bitField0_ & 0x00000004) != 0);
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     *
     * @return The color.
     */
    public com.google.type.Color getColor() {
      if (colorBuilder_ == null) {
        return color_ == null ? com.google.type.Color.getDefaultInstance() : color_;
      } else {
        return colorBuilder_.getMessage();
      }
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public Builder setColor(com.google.type.Color value) {
      if (colorBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        color_ = value;
      } else {
        colorBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public Builder setColor(com.google.type.Color.Builder builderForValue) {
      if (colorBuilder_ == null) {
        color_ = builderForValue.build();
      } else {
        colorBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000004;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public Builder mergeColor(com.google.type.Color value) {
      if (colorBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && color_ != null
            && color_ != com.google.type.Color.getDefaultInstance()) {
          getColorBuilder().mergeFrom(value);
        } else {
          color_ = value;
        }
      } else {
        colorBuilder_.mergeFrom(value);
      }
      if (color_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public Builder clearColor() {
      bitField0_ = (bitField0_ & ~0x00000004);
      color_ = null;
      if (colorBuilder_ != null) {
        colorBuilder_.dispose();
        colorBuilder_ = null;
      }
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public com.google.type.Color.Builder getColorBuilder() {
      bitField0_ |= 0x00000004;
      onChanged();
      return internalGetColorFieldBuilder().getBuilder();
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    public com.google.type.ColorOrBuilder getColorOrBuilder() {
      if (colorBuilder_ != null) {
        return colorBuilder_.getMessageOrBuilder();
      } else {
        return color_ == null ? com.google.type.Color.getDefaultInstance() : color_;
      }
    }

    /**
     *
     *
     * <pre>
     * Optional. The color of the button. If set, the button `type` is set to
     * `FILLED` and the color of `text` and `icon` fields are set to a
     * contrasting color for readability. For example, if the button color is
     * set to blue, any text or icons in the button are set to white.
     *
     * To set the button color, specify a value for the `red`, `green`, and `blue`
     * fields.
     * The value must be a float number between 0 and 1 based on the RGB color
     * value, where `0` (0/255) represents the absence of color  and `1` (255/255)
     * represents the maximum intensity of the color.
     *
     * For example, the following sets the color to red at its maximum intensity:
     *
     * ```
     * "color": {
     * "red": 1,
     * "green": 0,
     * "blue": 0,
     * }
     * ```
     *
     * The `alpha` field is unavailable for button color. If specified, this field
     * is ignored.
     * </pre>
     *
     * <code>.google.type.Color color = 3;</code>
     */
    private com.google.protobuf.SingleFieldBuilder<
            com.google.type.Color, com.google.type.Color.Builder, com.google.type.ColorOrBuilder>
        internalGetColorFieldBuilder() {
      if (colorBuilder_ == null) {
        colorBuilder_ =
            new com.google.protobuf.SingleFieldBuilder<
                com.google.type.Color,
                com.google.type.Color.Builder,
                com.google.type.ColorOrBuilder>(getColor(), getParentForChildren(), isClean());
        color_ = null;
      }
      return colorBuilder_;
    }

    private com.google.apps.card.v1.OnClick onClick_;
    private com.google.protobuf.SingleFieldBuilder<
            com.google.apps.card.v1.OnClick,
            com.google.apps.card.v1.OnClick.Builder,
            com.google.apps.card.v1.OnClickOrBuilder>
        onClickBuilder_;

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     *
     * @return Whether the onClick field is set.
     */
    public boolean hasOnClick() {
      return ((bitField0_ & 0x00000008) != 0);
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     *
     * @return The onClick.
     */
    public com.google.apps.card.v1.OnClick getOnClick() {
      if (onClickBuilder_ == null) {
        return onClick_ == null ? com.google.apps.card.v1.OnClick.getDefaultInstance() : onClick_;
      } else {
        return onClickBuilder_.getMessage();
      }
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public Builder setOnClick(com.google.apps.card.v1.OnClick value) {
      if (onClickBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        onClick_ = value;
      } else {
        onClickBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public Builder setOnClick(com.google.apps.card.v1.OnClick.Builder builderForValue) {
      if (onClickBuilder_ == null) {
        onClick_ = builderForValue.build();
      } else {
        onClickBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public Builder mergeOnClick(com.google.apps.card.v1.OnClick value) {
      if (onClickBuilder_ == null) {
        if (((bitField0_ & 0x00000008) != 0)
            && onClick_ != null
            && onClick_ != com.google.apps.card.v1.OnClick.getDefaultInstance()) {
          getOnClickBuilder().mergeFrom(value);
        } else {
          onClick_ = value;
        }
      } else {
        onClickBuilder_.mergeFrom(value);
      }
      if (onClick_ != null) {
        bitField0_ |= 0x00000008;
        onChanged();
      }
      return this;
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public Builder clearOnClick() {
      bitField0_ = (bitField0_ & ~0x00000008);
      onClick_ = null;
      if (onClickBuilder_ != null) {
        onClickBuilder_.dispose();
        onClickBuilder_ = null;
      }
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public com.google.apps.card.v1.OnClick.Builder getOnClickBuilder() {
      bitField0_ |= 0x00000008;
      onChanged();
      return internalGetOnClickFieldBuilder().getBuilder();
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    public com.google.apps.card.v1.OnClickOrBuilder getOnClickOrBuilder() {
      if (onClickBuilder_ != null) {
        return onClickBuilder_.getMessageOrBuilder();
      } else {
        return onClick_ == null ? com.google.apps.card.v1.OnClick.getDefaultInstance() : onClick_;
      }
    }

    /**
     *
     *
     * <pre>
     * Required. The action to perform when a user clicks the button, such as
     * opening a hyperlink or running a custom function.
     * </pre>
     *
     * <code>.google.apps.card.v1.OnClick on_click = 4;</code>
     */
    private com.google.protobuf.SingleFieldBuilder<
            com.google.apps.card.v1.OnClick,
            com.google.apps.card.v1.OnClick.Builder,
            com.google.apps.card.v1.OnClickOrBuilder>
        internalGetOnClickFieldBuilder() {
      if (onClickBuilder_ == null) {
        onClickBuilder_ =
            new com.google.protobuf.SingleFieldBuilder<
                com.google.apps.card.v1.OnClick,
                com.google.apps.card.v1.OnClick.Builder,
                com.google.apps.card.v1.OnClickOrBuilder>(
                getOnClick(), getParentForChildren(), isClean());
        onClick_ = null;
      }
      return onClickBuilder_;
    }

    private boolean disabled_;

    /**
     *
     *
     * <pre>
     * If `true`, the button is displayed in an inactive state and doesn't respond
     * to user actions.
     * </pre>
     *
     * <code>bool disabled = 5;</code>
     *
     * @return The disabled.
     */
    @java.lang.Override
    public boolean getDisabled() {
      return disabled_;
    }

    /**
     *
     *
     * <pre>
     * If `true`, the button is displayed in an inactive state and doesn't respond
     * to user actions.
     * </pre>
     *
     * <code>bool disabled = 5;</code>
     *
     * @param value The disabled to set.
     * @return This builder for chaining.
     */
    public Builder setDisabled(boolean value) {

      disabled_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * If `true`, the button is displayed in an inactive state and doesn't respond
     * to user actions.
     * </pre>
     *
     * <code>bool disabled = 5;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearDisabled() {
      bitField0_ = (bitField0_ & ~0x00000010);
      disabled_ = false;
      onChanged();
      return this;
    }

    private java.lang.Object altText_ = "";

    /**
     *
     *
     * <pre>
     * The alternative text that's used for accessibility.
     *
     * Set descriptive text that lets users know what the button does. For
     * example, if a button opens a hyperlink, you might write: "Opens a new
     * browser tab and navigates to the Google Chat developer documentation at
     * https://developers.google.com/workspace/chat".
     * </pre>
     *
     * <code>string alt_text = 6;</code>
     *
     * @return The altText.
     */
    public java.lang.String getAltText() {
      java.lang.Object ref = altText_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        altText_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }

    /**
     *
     *
     * <pre>
     * The alternative text that's used for accessibility.
     *
     * Set descriptive text that lets users know what the button does. For
     * example, if a button opens a hyperlink, you might write: "Opens a new
     * browser tab and navigates to the Google Chat developer documentation at
     * https://developers.google.com/workspace/chat".
     * </pre>
     *
     * <code>string alt_text = 6;</code>
     *
     * @return The bytes for altText.
     */
    public com.google.protobuf.ByteString getAltTextBytes() {
      java.lang.Object ref = altText_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        altText_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }

    /**
     *
     *
     * <pre>
     * The alternative text that's used for accessibility.
     *
     * Set descriptive text that lets users know what the button does. For
     * example, if a button opens a hyperlink, you might write: "Opens a new
     * browser tab and navigates to the Google Chat developer documentation at
     * https://developers.google.com/workspace/chat".
     * </pre>
     *
     * <code>string alt_text = 6;</code>
     *
     * @param value The altText to set.
     * @return This builder for chaining.
     */
    public Builder setAltText(java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      altText_ = value;
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The alternative text that's used for accessibility.
     *
     * Set descriptive text that lets users know what the button does. For
     * example, if a button opens a hyperlink, you might write: "Opens a new
     * browser tab and navigates to the Google Chat developer documentation at
     * https://developers.google.com/workspace/chat".
     * </pre>
     *
     * <code>string alt_text = 6;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearAltText() {
      altText_ = getDefaultInstance().getAltText();
      bitField0_ = (bitField0_ & ~0x00000020);
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * The alternative text that's used for accessibility.
     *
     * Set descriptive text that lets users know what the button does. For
     * example, if a button opens a hyperlink, you might write: "Opens a new
     * browser tab and navigates to the Google Chat developer documentation at
     * https://developers.google.com/workspace/chat".
     * </pre>
     *
     * <code>string alt_text = 6;</code>
     *
     * @param value The bytes for altText to set.
     * @return This builder for chaining.
     */
    public Builder setAltTextBytes(com.google.protobuf.ByteString value) {
      if (value == null) {
        throw new NullPointerException();
      }
      checkByteStringIsUtf8(value);
      altText_ = value;
      bitField0_ |= 0x00000020;
      onChanged();
      return this;
    }

    private int type_ = 0;

    /**
     *
     *
     * <pre>
     * Optional. The type of a button. If unset, button type defaults to
     * `OUTLINED`. If the `color` field is set, the button type is forced to
     * `FILLED` and any value set for this field is ignored.
     * </pre>
     *
     * <code>.google.apps.card.v1.Button.Type type = 7;</code>
     *
     * @return The enum numeric value on the wire for type.
     */
    @java.lang.Override
    public int getTypeValue() {
      return type_;
    }

    /**
     *
     *
     * <pre>
     * Optional. The type of a button. If unset, button type defaults to
     * `OUTLINED`. If the `color` field is set, the button type is forced to
     * `FILLED` and any value set for this field is ignored.
     * </pre>
     *
     * <code>.google.apps.card.v1.Button.Type type = 7;</code>
     *
     * @param value The enum numeric value on the wire for type to set.
     * @return This builder for chaining.
     */
    public Builder setTypeValue(int value) {
      type_ = value;
      bitField0_ |= 0x00000040;
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The type of a button. If unset, button type defaults to
     * `OUTLINED`. If the `color` field is set, the button type is forced to
     * `FILLED` and any value set for this field is ignored.
     * </pre>
     *
     * <code>.google.apps.card.v1.Button.Type type = 7;</code>
     *
     * @return The type.
     */
    @java.lang.Override
    public com.google.apps.card.v1.Button.Type getType() {
      com.google.apps.card.v1.Button.Type result =
          com.google.apps.card.v1.Button.Type.forNumber(type_);
      return result == null ? com.google.apps.card.v1.Button.Type.UNRECOGNIZED : result;
    }

    /**
     *
     *
     * <pre>
     * Optional. The type of a button. If unset, button type defaults to
     * `OUTLINED`. If the `color` field is set, the button type is forced to
     * `FILLED` and any value set for this field is ignored.
     * </pre>
     *
     * <code>.google.apps.card.v1.Button.Type type = 7;</code>
     *
     * @param value The type to set.
     * @return This builder for chaining.
     */
    public Builder setType(com.google.apps.card.v1.Button.Type value) {
      if (value == null) {
        throw new NullPointerException();
      }
      bitField0_ |= 0x00000040;
      type_ = value.getNumber();
      onChanged();
      return this;
    }

    /**
     *
     *
     * <pre>
     * Optional. The type of a button. If unset, button type defaults to
     * `OUTLINED`. If the `color` field is set, the button type is forced to
     * `FILLED` and any value set for this field is ignored.
     * </pre>
     *
     * <code>.google.apps.card.v1.Button.Type type = 7;</code>
     *
     * @return This builder for chaining.
     */
    public Builder clearType() {
      bitField0_ = (bitField0_ & ~0x00000040);
      type_ = 0;
      onChanged();
      return this;
    }

    // @@protoc_insertion_point(builder_scope:google.apps.card.v1.Button)
  }

  // @@protoc_insertion_point(class_scope:google.apps.card.v1.Button)
  private static final com.google.apps.card.v1.Button DEFAULT_INSTANCE;

  static {
    DEFAULT_INSTANCE = new com.google.apps.card.v1.Button();
  }

  public static com.google.apps.card.v1.Button getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }

  private static final com.google.protobuf.Parser<Button> PARSER =
      new com.google.protobuf.AbstractParser<Button>() {
        @java.lang.Override
        public Button parsePartialFrom(
            com.google.protobuf.CodedInputStream input,
            com.google.protobuf.ExtensionRegistryLite extensionRegistry)
            throws com.google.protobuf.InvalidProtocolBufferException {
          Builder builder = newBuilder();
          try {
            builder.mergeFrom(input, extensionRegistry);
          } catch (com.google.protobuf.InvalidProtocolBufferException e) {
            throw e.setUnfinishedMessage(builder.buildPartial());
          } catch (com.google.protobuf.UninitializedMessageException e) {
            throw e.asInvalidProtocolBufferException().setUnfinishedMessage(builder.buildPartial());
          } catch (java.io.IOException e) {
            throw new com.google.protobuf.InvalidProtocolBufferException(e)
                .setUnfinishedMessage(builder.buildPartial());
          }
          return builder.buildPartial();
        }
      };

  public static com.google.protobuf.Parser<Button> parser() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.protobuf.Parser<Button> getParserForType() {
    return PARSER;
  }

  @java.lang.Override
  public com.google.apps.card.v1.Button getDefaultInstanceForType() {
    return DEFAULT_INSTANCE;
  }
}
