From 5a38a9f9cc0d839d1eef9ff95d9f813601902607 Mon Sep 17 00:00:00 2001
From: Paul Gschwendtner <paulgschwendtner@gmail.com>
Date: Fri, 23 Jun 2017 00:29:03 +0200
Subject: [PATCH] refactor(button, chips): use toString method for
 aria-disabled (#5278)

For buttons and chips the value of the aria-disabled host binding is resolved from a extra method on the class instance.

As already done in other components, the button and chips should just use `boolean.toString()` which is less payload and also makes the code more readable.
---
 src/lib/button/button.ts | 6 +-----
 src/lib/chips/chip.ts    | 7 +------
 2 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/src/lib/button/button.ts b/src/lib/button/button.ts
index 22a0f6b0078..c29acbd8bea 100644
--- a/src/lib/button/button.ts
+++ b/src/lib/button/button.ts
@@ -193,7 +193,7 @@ export class MdButton extends _MdButtonMixinBase implements OnDestroy, CanDisabl
              a[mat-button], a[mat-raised-button], a[mat-icon-button], a[mat-fab], a[mat-mini-fab]`,
   host: {
     '[attr.disabled]': 'disabled || null',
-    '[attr.aria-disabled]': '_isAriaDisabled',
+    '[attr.aria-disabled]': 'disabled.toString()',
     '(click)': '_haltDisabledEvents($event)',
   },
   inputs: ['disabled', 'color'],
@@ -216,10 +216,6 @@ export class MdAnchor extends MdButton {
     return this.disabled ? -1 : 0;
   }
 
-  get _isAriaDisabled(): string {
-    return this.disabled ? 'true' : 'false';
-  }
-
   _haltDisabledEvents(event: Event) {
     // A disabled button shouldn't apply any actions
     if (this.disabled) {
diff --git a/src/lib/chips/chip.ts b/src/lib/chips/chip.ts
index 3ab000852f3..fc9cf1818a7 100644
--- a/src/lib/chips/chip.ts
+++ b/src/lib/chips/chip.ts
@@ -55,7 +55,7 @@ export class MdBasicChip { }
     'role': 'option',
     '[class.mat-chip-selected]': 'selected',
     '[attr.disabled]': 'disabled || null',
-    '[attr.aria-disabled]': '_isAriaDisabled()',
+    '[attr.aria-disabled]': 'disabled.toString()',
     '(click)': '_handleClick($event)',
     '(focus)': '_hasFocus = true',
     '(blur)': '_hasFocus = false',
@@ -109,11 +109,6 @@ export class MdChip extends _MdChipMixinBase implements Focusable, OnDestroy, Ca
     this.onFocus.emit({chip: this});
   }
 
-  /** The aria-disabled state for the chip */
-  _isAriaDisabled(): string {
-    return String(this.disabled);
-  }
-
   /** Ensures events fire properly upon click. */
   _handleClick(event: Event) {
     // Check disabled