fix(input): fix tabbing between tappable inputs

src/components/checkbox/checkbox.ts

@@ -2,7 +2,7 @@ import { AfterContentInit, Component, ElementRef, EventEmitter, forwardRef, Host
 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
 
 import { Config } from '../../config/config';
-import { Form } from '../../util/form';
+import { Form, IonicTapInput } from '../../util/form';
 import { Ion } from '../ion';
 import { isTrueProperty } from '../../util/util';
 import { Item } from '../item/item';
@@ -72,7 +72,7 @@ export const CHECKBOX_VALUE_ACCESSOR: any = {
   providers: [CHECKBOX_VALUE_ACCESSOR],
   encapsulation: ViewEncapsulation.None,
 })
-export class Checkbox extends Ion implements AfterContentInit, ControlValueAccessor, OnDestroy {
+export class Checkbox extends Ion implements IonicTapInput, AfterContentInit, ControlValueAccessor, OnDestroy {
   /** @private */
   _checked: boolean = false;
   /** @private */
@@ -210,6 +210,13 @@ export class Checkbox extends Ion implements AfterContentInit, ControlValueAcces
     this.onTouched();
   }
 
+  /**
+   * @private
+   */
+  initFocus() {
+    this._elementRef.nativeElement.querySelector('button').focus();
+  }
+
   /**
    * @private
    */

src/components/radio/radio-button.ts

@@ -1,7 +1,7 @@
 import { Component, ElementRef, EventEmitter, HostListener, Input, OnInit, OnDestroy, Optional, Output, Renderer, ViewEncapsulation } from '@angular/core';
 
 import { Config } from '../../config/config';
-import { Form } from '../../util/form';
+import { Form, IonicTapInput } from '../../util/form';
 import { Ion } from '../ion';
 import { isBlank, isCheckedProperty, isPresent, isTrueProperty } from '../../util/util';
 import { Item } from '../item/item';
@@ -63,7 +63,7 @@ import { RadioGroup } from './radio-group';
   },
   encapsulation: ViewEncapsulation.None,
 })
-export class RadioButton extends Ion implements OnDestroy, OnInit {
+export class RadioButton extends Ion implements IonicTapInput, OnDestroy, OnInit {
 
   /**
    * @internal
@@ -180,6 +180,13 @@ export class RadioButton extends Ion implements OnDestroy, OnInit {
     this._item && this._item.setElementClass('item-radio-disabled', this._disabled);
   }
 
+  /**
+   * @private
+   */
+  initFocus() {
+    this._elementRef.nativeElement.querySelector('button').focus();
+  }
+
   /**
    * @internal
    */

src/components/toggle/toggle.ts

@@ -1,12 +1,13 @@
-import { AfterContentInit, Component, ElementRef, EventEmitter, forwardRef, Input, OnDestroy, Optional, Output, Renderer, ViewEncapsulation } from '@angular/core';
+import { AfterContentInit, Component, ElementRef, EventEmitter, forwardRef, HostListener, Input, OnDestroy, Optional, Output, Renderer, ViewEncapsulation } from '@angular/core';
 import { ControlValueAccessor, NG_VALUE_ACCESSOR } from '@angular/forms';
 
 import { Config } from '../../config/config';
-import { Form } from '../../util/form';
+import { Form, IonicTapInput } from '../../util/form';
 import { isTrueProperty } from '../../util/util';
 import { Ion } from '../ion';
 import { Item } from '../item/item';
 import { pointerCoord } from '../../util/dom';
+import { Key } from '../../util/key';
 import { Haptic } from '../../util/haptic';
 import { UIEventManager } from '../../util/ui-event-manager';
 
@@ -74,7 +75,7 @@ export const TOGGLE_VALUE_ACCESSOR: any = {
   providers: [TOGGLE_VALUE_ACCESSOR],
   encapsulation: ViewEncapsulation.None,
 })
-export class Toggle extends Ion implements AfterContentInit, ControlValueAccessor, OnDestroy  {
+export class Toggle extends Ion implements IonicTapInput, AfterContentInit, ControlValueAccessor, OnDestroy  {
   /** @private */
   _checked: boolean = false;
   /** @private */
@@ -285,6 +286,25 @@ export class Toggle extends Ion implements AfterContentInit, ControlValueAccesso
     });
   }
 
+  /**
+   * @private
+   */
+  @HostListener('keyup', ['$event']) _keyup(ev: KeyboardEvent) {
+    if (ev.keyCode === Key.SPACE || ev.keyCode === Key.ENTER) {
+      console.debug(`toggle, keyup: ${ev.keyCode}`);
+      ev.preventDefault();
+      ev.stopPropagation();
+      this.onChange(!this._checked);
+    }
+  }
+
+  /**
+   * @private
+   */
+  initFocus() {
+    this._elementRef.nativeElement.querySelector('button').focus();
+  }
+
   /**
    * @private
    */

src/util/form.ts

@@ -25,7 +25,7 @@ export class Form {
   }
 
   focusOut() {
-    let activeElement = <HTMLElement>document.activeElement;
+    const activeElement = <HTMLElement>document.activeElement;
     activeElement && activeElement.blur && activeElement.blur();
   }
 
@@ -61,3 +61,24 @@ export class Form {
   }
 
 }
+
+
+export abstract class IonicTapInput implements IonicFormInput {
+
+  abstract initFocus();
+
+  abstract get checked(): boolean;
+
+  abstract set checked(val: boolean);
+
+  abstract get disabled(): boolean;
+
+  abstract set disabled(val: boolean);
+
+}
+
+export abstract class IonicFormInput {
+
+  abstract initFocus();
+
+}

src/util/key.ts

@@ -1,5 +1,12 @@
+
 export enum Key {
-  ENTER = <any> 13,
+  LEFT = 37,
-  ESCAPE = <any> 27,
+  UP = 38,
-  TAB = <any> 9
+  RIGHT = 39,
-};
+  DOWN = 40,
+
+  ENTER = 13,
+  ESCAPE = 27,
+  SPACE = 32,
+  TAB = 9
+}