text: import { r as registerInstance, h, H as Host, i as getElement } from './index-7a8b7a1c.js';
  import { c as config, b as getIonMode } from './ionic-global-63a97a32.js';
  import { o as openURL, c as createColorClasses, h as hostContext } from './theme-ff3fc52f.js';
  
  const backButtonIosCss = ":host{--background:transparent;--color-focused:currentColor;--color-hover:currentColor;--icon-margin-top:0;--icon-margin-bottom:0;--icon-padding-top:0;--icon-padding-end:0;--icon-padding-bottom:0;--icon-padding-start:0;--margin-top:0;--margin-end:0;--margin-bottom:0;--margin-start:0;--min-width:auto;--min-height:auto;--padding-top:0;--padding-end:0;--padding-bottom:0;--padding-start:0;--opacity:1;--ripple-color:currentColor;--transition:background-color, opacity 100ms linear;display:none;min-width:var(--min-width);min-height:var(--min-height);color:var(--color);font-family:var(--ion-font-family, inherit);text-align:center;text-decoration:none;text-overflow:ellipsis;text-transform:none;white-space:nowrap;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-font-kerning:none;font-kerning:none}ion-ripple-effect{color:var(--ripple-color)}:host(.ion-color) .button-native{color:var(--ion-color-base)}:host(.show-back-button){display:block}:host(.back-button-disabled){cursor:default;opacity:0.5;pointer-events:none}.button-native{border-radius:var(--border-radius);-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased;margin-left:var(--margin-start);margin-right:var(--margin-end);margin-top:var(--margin-top);margin-bottom:var(--margin-bottom);padding-left:var(--padding-start);padding-right:var(--padding-end);padding-top:var(--padding-top);padding-bottom:var(--padding-bottom);font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;letter-spacing:inherit;text-decoration:inherit;text-indent:inherit;text-overflow:inherit;text-transform:inherit;text-align:inherit;white-space:inherit;color:inherit;display:block;position:relative;width:100%;height:100%;min-height:inherit;-webkit-transition:var(--transition);transition:var(--transition);border:0;outline:none;background:var(--background);line-height:1;cursor:pointer;opacity:var(--opacity);overflow:hidden;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;z-index:0;-webkit-appearance:none;-moz-appearance:none;appearance:none}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){.button-native{margin-left:unset;margin-right:unset;-webkit-margin-start:var(--margin-start);margin-inline-start:var(--margin-start);-webkit-margin-end:var(--margin-end);margin-inline-end:var(--margin-end)}}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){.button-native{padding-left:unset;padding-right:unset;-webkit-padding-start:var(--padding-start);padding-inline-start:var(--padding-start);-webkit-padding-end:var(--padding-end);padding-inline-end:var(--padding-end)}}.button-inner{display:-ms-flexbox;display:flex;position:relative;-ms-flex-flow:row nowrap;flex-flow:row nowrap;-ms-flex-negative:0;flex-shrink:0;-ms-flex-align:center;align-items:center;-ms-flex-pack:center;justify-content:center;width:100%;height:100%;z-index:1}ion-icon{padding-left:var(--icon-padding-start);padding-right:var(--icon-padding-end);padding-top:var(--icon-padding-top);padding-bottom:var(--icon-padding-bottom);margin-left:var(--icon-margin-start);margin-right:var(--icon-margin-end);margin-top:var(--icon-margin-top);margin-bottom:var(--icon-margin-bottom);display:inherit;font-size:var(--icon-font-size);font-weight:var(--icon-font-weight);pointer-events:none}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){ion-icon{padding-left:unset;padding-right:unset;-webkit-padding-start:var(--icon-padding-start);padding-inline-start:var(--icon-padding-start);-webkit-padding-end:var(--icon-padding-end);padding-inline-end:var(--icon-padding-end)}}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){ion-icon{margin-left:unset;margin-right:unset;-webkit-margin-start:var(--icon-margin-start);margin-inline-start:var(--icon-margin-start);-webkit-margin-end:var(--icon-margin-end);margin-inline-end:var(--icon-margin-end)}}:host(.ion-focused) .button-native{color:var(--color-focused)}:host(.ion-focused) .button-native::after{background:var(--background-focused);opacity:var(--background-focused-opacity)}.button-native::after{left:0;right:0;top:0;bottom:0;position:absolute;content:\"\";opacity:0}@media (any-hover: hover){:host(:hover) .button-native{color:var(--color-hover)}:host(:hover) .button-native::after{background:var(--background-hover);opacity:var(--background-hover-opacity)}}:host(.ion-color.ion-focused) .button-native{color:var(--ion-color-base)}@media (any-hover: hover){:host(.ion-color:hover) .button-native{color:var(--ion-color-base)}}:host(.in-toolbar:not(.in-toolbar-color)){color:var(--ion-toolbar-color, var(--color))}:host{--background-hover:transparent;--background-hover-opacity:1;--background-focused:currentColor;--background-focused-opacity:.1;--border-radius:4px;--color:var(--ion-color-primary, #3880ff);--icon-margin-end:-5px;--icon-margin-start:-4px;--icon-font-size:1.85em;--min-height:32px;font-size:17px}.button-native{-webkit-transform:translateZ(0);transform:translateZ(0);overflow:visible;z-index:99}:host(.ion-activated) .button-native{opacity:0.4}@media (any-hover: hover){:host(:hover){opacity:0.6}}:host(.ion-color.ion-focused) .button-native::after{background:var(--ion-color-base)}";
  
  const backButtonMdCss = ":host{--background:transparent;--color-focused:currentColor;--color-hover:currentColor;--icon-margin-top:0;--icon-margin-bottom:0;--icon-padding-top:0;--icon-padding-end:0;--icon-padding-bottom:0;--icon-padding-start:0;--margin-top:0;--margin-end:0;--margin-bottom:0;--margin-start:0;--min-width:auto;--min-height:auto;--padding-top:0;--padding-end:0;--padding-bottom:0;--padding-start:0;--opacity:1;--ripple-color:currentColor;--transition:background-color, opacity 100ms linear;display:none;min-width:var(--min-width);min-height:var(--min-height);color:var(--color);font-family:var(--ion-font-family, inherit);text-align:center;text-decoration:none;text-overflow:ellipsis;text-transform:none;white-space:nowrap;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-font-kerning:none;font-kerning:none}ion-ripple-effect{color:var(--ripple-color)}:host(.ion-color) .button-native{color:var(--ion-color-base)}:host(.show-back-button){display:block}:host(.back-button-disabled){cursor:default;opacity:0.5;pointer-events:none}.button-native{border-radius:var(--border-radius);-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased;margin-left:var(--margin-start);margin-right:var(--margin-end);margin-top:var(--margin-top);margin-bottom:var(--margin-bottom);padding-left:var(--padding-start);padding-right:var(--padding-end);padding-top:var(--padding-top);padding-bottom:var(--padding-bottom);font-family:inherit;font-size:inherit;font-style:inherit;font-weight:inherit;letter-spacing:inherit;text-decoration:inherit;text-indent:inherit;text-overflow:inherit;text-transform:inherit;text-align:inherit;white-space:inherit;color:inherit;display:block;position:relative;width:100%;height:100%;min-height:inherit;-webkit-transition:var(--transition);transition:var(--transition);border:0;outline:none;background:var(--background);line-height:1;cursor:pointer;opacity:var(--opacity);overflow:hidden;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;z-index:0;-webkit-appearance:none;-moz-appearance:none;appearance:none}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){.button-native{margin-left:unset;margin-right:unset;-webkit-margin-start:var(--margin-start);margin-inline-start:var(--margin-start);-webkit-margin-end:var(--margin-end);margin-inline-end:var(--margin-end)}}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){.button-native{padding-left:unset;padding-right:unset;-webkit-padding-start:var(--padding-start);padding-inline-start:var(--padding-start);-webkit-padding-end:var(--padding-end);padding-inline-end:var(--padding-end)}}.button-inner{display:-ms-flexbox;display:flex;position:relative;-ms-flex-flow:row nowrap;flex-flow:row nowrap;-ms-flex-negative:0;flex-shrink:0;-ms-flex-align:center;align-items:center;-ms-flex-pack:center;justify-content:center;width:100%;height:100%;z-index:1}ion-icon{padding-left:var(--icon-padding-start);padding-right:var(--icon-padding-end);padding-top:var(--icon-padding-top);padding-bottom:var(--icon-padding-bottom);margin-left:var(--icon-margin-start);margin-right:var(--icon-margin-end);margin-top:var(--icon-margin-top);margin-bottom:var(--icon-margin-bottom);display:inherit;font-size:var(--icon-font-size);font-weight:var(--icon-font-weight);pointer-events:none}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){ion-icon{padding-left:unset;padding-right:unset;-webkit-padding-start:var(--icon-padding-start);padding-inline-start:var(--icon-padding-start);-webkit-padding-end:var(--icon-padding-end);padding-inline-end:var(--icon-padding-end)}}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){ion-icon{margin-left:unset;margin-right:unset;-webkit-margin-start:var(--icon-margin-start);margin-inline-start:var(--icon-margin-start);-webkit-margin-end:var(--icon-margin-end);margin-inline-end:var(--icon-margin-end)}}:host(.ion-focused) .button-native{color:var(--color-focused)}:host(.ion-focused) .button-native::after{background:var(--background-focused);opacity:var(--background-focused-opacity)}.button-native::after{left:0;right:0;top:0;bottom:0;position:absolute;content:\"\";opacity:0}@media (any-hover: hover){:host(:hover) .button-native{color:var(--color-hover)}:host(:hover) .button-native::after{background:var(--background-hover);opacity:var(--background-hover-opacity)}}:host(.ion-color.ion-focused) .button-native{color:var(--ion-color-base)}@media (any-hover: hover){:host(.ion-color:hover) .button-native{color:var(--ion-color-base)}}:host(.in-toolbar:not(.in-toolbar-color)){color:var(--ion-toolbar-color, var(--color))}:host{--border-radius:4px;--background-focused:currentColor;--background-focused-opacity:.12;--background-hover:currentColor;--background-hover-opacity:0.04;--color:currentColor;--icon-margin-end:0;--icon-margin-start:0;--icon-font-size:24px;--icon-font-weight:normal;--min-height:32px;--min-width:44px;--padding-start:12px;--padding-end:12px;font-size:14px;font-weight:500;text-transform:uppercase}:host(.back-button-has-icon-only){--border-radius:50%;min-width:48px;height:48px}.button-native{-webkit-box-shadow:none;box-shadow:none}.button-text{padding-left:4px;padding-right:4px;padding-top:0;padding-bottom:0}@supports ((-webkit-margin-start: 0) or (margin-inline-start: 0)) or (-webkit-margin-start: 0){.button-text{padding-left:unset;padding-right:unset;-webkit-padding-start:4px;padding-inline-start:4px;-webkit-padding-end:4px;padding-inline-end:4px}}ion-icon{line-height:0.67;text-align:start}@media (any-hover: hover){:host(.ion-color:hover) .button-native::after{background:var(--ion-color-base)}}:host(.ion-color.ion-focused) .button-native::after{background:var(--ion-color-base)}";
  
  const BackButton = class {
    constructor(hostRef) {
      registerInstance(this, hostRef);
      /**
       * If `true`, the user cannot interact with the button.
       */
      this.disabled = false;
      /**
       * The type of the button.
       */
      this.type = 'button';
      this.onClick = async (ev) => {
        const nav = this.el.closest('ion-nav');
        ev.preventDefault();
        if (nav && await nav.canGoBack()) {
          return nav.pop({ animationBuilder: this.routerAnimation, skipIfBusy: true });
        }
        return openURL(this.defaultHref, ev, 'back', this.routerAnimation);
      };
    }
    componentWillLoad() {
      if (this.defaultHref === undefined) {
        this.defaultHref = config.get('backButtonDefaultHref');
      }
    }
    get backButtonIcon() {
      const icon = this.icon;
      if (icon != null) {
        // icon is set on the component or by the config
        return icon;
      }
      if (getIonMode(this) === 'ios') {
        // default ios back button icon
        return config.get('backButtonIcon', 'chevron-back');
      }
      // default md back button icon
      return config.get('backButtonIcon', 'arrow-back-sharp');
    }
    get backButtonText() {
      const defaultBackButtonText = getIonMode(this) === 'ios' ? 'Back' : null;
      return this.text != null ? this.text : config.get('backButtonText', defaultBackButtonText);
    }
    get hasIconOnly() {
      return this.backButtonIcon && !this.backButtonText;
    }
    get rippleType() {
      // If the button only has an icon we use the unbounded
      // "circular" ripple effect
      if (this.hasIconOnly) {
        return 'unbounded';
      }
      return 'bounded';
    }
    render() {
      const { color, defaultHref, disabled, type, hasIconOnly, backButtonIcon, backButtonText } = this;
      const showBackButton = defaultHref !== undefined;
      const mode = getIonMode(this);
      return (h(Host, { onClick: this.onClick, class: createColorClasses(color, {
          [mode]: true,
          'button': true,
          'back-button-disabled': disabled,
          'back-button-has-icon-only': hasIconOnly,
          'in-toolbar': hostContext('ion-toolbar', this.el),
          'in-toolbar-color': hostContext('ion-toolbar[color]', this.el),
          'ion-activatable': true,
          'ion-focusable': true,
          'show-back-button': showBackButton
        }) }, h("button", { type: type, disabled: disabled, class: "button-native", part: "native", "aria-label": backButtonText || 'back' }, h("span", { class: "button-inner" }, backButtonIcon && h("ion-icon", { part: "icon", icon: backButtonIcon, "aria-hidden": "true", lazy: false }), backButtonText && h("span", { part: "text", "aria-hidden": "true", class: "button-text" }, backButtonText)), mode === 'md' && h("ion-ripple-effect", { type: this.rippleType }))));
    }
    get el() { return getElement(this); }
  };
  BackButton.style = {
    ios: backButtonIosCss,
    md: backButtonMdCss
  };
  
  export { BackButton as ion_back_button };
  