feat(button): strong decorator

src/components/button/button.ios.scss

@@ -312,3 +312,11 @@ $button-ios-round-border-radius:                    $button-round-border-radius
   @include ios-button-outline($color-name, $color-base, $color-contrast);
   @include ios-button-clear($color-name, $color-base, $color-contrast);
 }
+
+
+// iOS strong Button
+// --------------------------------------------------
+
+.button-strong-ios {
+  font-weight: bold;
+}

src/components/button/button.md.scss

@@ -424,3 +424,11 @@ $button-md-round-border-radius:                 $button-round-border-radius !def
   @include md-button-outline($color-name, $color-base, $color-contrast);
   @include md-button-clear($color-name, $color-base, $color-contrast);
 }
+
+
+// MD strong Button
+// --------------------------------------------------
+
+.button-strong-md {
+  font-weight: bold;
+}

src/components/button/button.ts

@@ -138,6 +138,9 @@ export class Button extends Ion {
   /** @private */
   _display: string; // block/full
 
+  /** @private */
+  _decorator: string; // strong
+
   /** @private */
   _init: boolean;
 
@@ -213,6 +216,14 @@ export class Button extends Ion {
     this._attr('_display', 'full', val);
   }
 
+  /**
+   * @input {boolean} A button that has strong importance, ie. it represents an important action.
+   */
+  @Input()
+  set strong(val: boolean) {
+    this._attr('_decorator', 'strong', val);
+  }
+
   /**
    * @input {string} The mode to apply to this component.
    */
@@ -301,6 +312,7 @@ export class Button extends Ion {
       this._setClass(this._shape, assignCssClass); // button-round
       this._setClass(this._display, assignCssClass); // button-full
       this._setClass(this._size, assignCssClass); // button-small
+      this._setClass(this._decorator, assignCssClass); // button-strong
       this._updateColor(this._color, assignCssClass); // button-secondary, bar-button-secondary
     }
   }

src/components/button/button.wp.scss

@@ -315,3 +315,11 @@ $button-wp-round-border-radius:                           $button-round-border-r
   @include wp-button-outline($color-name, $color-base, $color-contrast);
   @include wp-button-clear($color-name, $color-base, $color-contrast);
 }
+
+
+// WP strong Button
+// --------------------------------------------------
+
+.button-strong-wp {
+  font-weight: bold;
+}

src/components/button/test/decorator/app-module.ts

@@ -0,0 +1,32 @@
+import { Component, NgModule } from '@angular/core';
+import { IonicApp, IonicModule } from '../../../..';
+
+
+@Component({
+  templateUrl: 'main.html'
+})
+export class E2EPage {
+  strong = false;
+}
+
+@Component({
+  template: '<ion-nav [root]="rootPage"></ion-nav>'
+})
+export class E2EApp {
+  rootPage = E2EPage;
+}
+
+@NgModule({
+  declarations: [
+    E2EApp,
+    E2EPage
+  ],
+  imports: [
+    IonicModule.forRoot(E2EApp)
+  ],
+  bootstrap: [IonicApp],
+  entryComponents: [
+    E2EPage
+  ]
+})
+export class AppModule {}

src/components/button/test/decorator/e2e.ts

@@ -0,0 +1,4 @@
+
+it('should click edit button', function() {
+  element(by.css('.e2eButtonEdit')).click();
+});

src/components/button/test/decorator/main.html

@@ -0,0 +1,57 @@
+<ion-header>
+
+  <ion-toolbar>
+    <ion-title>Outline Buttons</ion-title>
+    <ion-buttons end>
+      <button ion-button [strong]="strong" (click)="strong = !strong" class="e2eButtonEdit">
+        {{strong ? 'Done' : 'Edit' }}
+      </button>
+    </ion-buttons>
+  </ion-toolbar>
+
+</ion-header>
+
+
+<ion-content padding style="text-align:center" class="outer-content">
+
+  <p>
+    <button ion-button [strong]="strong" small>Default (small)</button>
+    <button ion-button strong small>Default (small)</button>
+  </p>
+
+  <p>
+    <button ion-button outline [strong]="strong" color="secondary">Outline</button>
+    <button ion-button outline strong color="secondary">Outline</button>
+  </p>
+
+  <p>
+    <button ion-button block [strong]="strong" color="danger" large>Block (large)</button>
+    <button ion-button block strong color="danger" large>Block (large)</button>
+  </p>
+
+  <p>
+    <button ion-button full [strong]="strong" color="dark">Full</button>
+    <button ion-button full strong color="dark">Default</button>
+  </p>
+
+  <p>
+    <button ion-button raised [strong]="strong" color="light">Raised</button>
+    <button ion-button raised strong color="light">Raised</button>
+  </p>
+
+  <p>
+    <button ion-button round [strong]="strong">Round</button>
+    <button ion-button round strong>Round</button>
+  </p>
+
+  <p>
+    <button ion-button clear [strong]="strong">Clear</button>
+    <button ion-button clear strong>Clear</button>
+  </p>
+
+  <p>
+    <button ion-button clear [strong]="strong">Default</button>
+    <button ion-button clear strong>Default</button>
+  </p>
+
+</ion-content>