From a54361cf2e7bb5ca778475466328b8266790bf2b Mon Sep 17 00:00:00 2001
From: Brandy Carney <brandyscarney@gmail.com>
Date: Tue, 19 Apr 2016 20:07:21 -0400
Subject: [PATCH] feat(slides): add method to get previous index

Slides added method wrapper: `getPreviousIndex()`

references #5508
---
 ionic/components/slides/slides.ts                 | 9 +++++++++
 ionic/components/slides/swiper-widget.d.ts        | 1 +
 ionic/components/slides/test/controller/index.ts  | 7 ++++---
 ionic/components/slides/test/controller/main.html | 7 +++++++
 4 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/ionic/components/slides/slides.ts b/ionic/components/slides/slides.ts
index 174616cc2d8..59e166d26cb 100644
--- a/ionic/components/slides/slides.ts
+++ b/ionic/components/slides/slides.ts
@@ -827,6 +827,15 @@ export class Slides extends Ion {
     return this.slider.activeIndex;
   }
 
+  /**
+   * Get the index of the previous slide.
+   *
+   * @returns {number} The index number of the previous slide.
+   */
+  getPreviousIndex(): number {
+    return this.slider.previousIndex;
+  }
+
   /**
    * Get the total number of slides.
    *
diff --git a/ionic/components/slides/swiper-widget.d.ts b/ionic/components/slides/swiper-widget.d.ts
index ca0f3cdc49a..054b6491c95 100644
--- a/ionic/components/slides/swiper-widget.d.ts
+++ b/ionic/components/slides/swiper-widget.d.ts
@@ -3,6 +3,7 @@ export declare class Swiper {
   constructor(container: HTMLElement, params: any);
   slides: Array<HTMLElement>;
   activeIndex: number;
+  previousIndex: number;
   isEnd: boolean;
   isBeginning: boolean;
   update(): any;
diff --git a/ionic/components/slides/test/controller/index.ts b/ionic/components/slides/test/controller/index.ts
index d7ea2bd5219..01cfd5a43c3 100644
--- a/ionic/components/slides/test/controller/index.ts
+++ b/ionic/components/slides/test/controller/index.ts
@@ -9,7 +9,7 @@ class MyPage {
   @ViewChild('mySlider') slider: Slides;
   mySlideOptions = {
     initialSlide: 1,
-    loop: true
+    loop: false
   };
 
   ngAfterViewInit() {
@@ -17,8 +17,9 @@ class MyPage {
   }
 
   onSlideChanged() {
+    let previousIndex = this.slider.getPreviousIndex();
     let currentIndex = this.slider.getActiveIndex();
-    console.log("Current index is", currentIndex);
+    console.log("Previous index is", previousIndex, "Current index is", currentIndex);
   }
 
   goToPrevSlide() {
@@ -30,7 +31,7 @@ class MyPage {
   }
 
   goToSlide(index) {
-    this.slider.slideTo(index, 500, false);
+    this.slider.slideTo(index);
   }
 
   getIndex() {
diff --git a/ionic/components/slides/test/controller/main.html b/ionic/components/slides/test/controller/main.html
index 05bc1727ed6..1ec9978f978 100644
--- a/ionic/components/slides/test/controller/main.html
+++ b/ionic/components/slides/test/controller/main.html
@@ -1,16 +1,23 @@
 <ion-slides #mySlider [options]="mySlideOptions" (didChange)="onSlideChanged()">
   <ion-slide padding>
     <h1>Slide 1</h1>
+    <button block (click)="goToPrevSlide()">Navigate Back</button>
+    <button block (click)="goToNextSlide()">Navigate Forward</button>
     <button block (click)="goToSlide(2)">Navigate to 3rd Slide</button>
     <button block (click)="getLength()">Get Slide Length</button>
+    <button block (click)="getIndex()">Get Index</button>
   </ion-slide>
   <ion-slide padding>
     <h1>Slide 2</h1>
     <button block (click)="goToPrevSlide()">Navigate Back</button>
     <button block (click)="goToNextSlide()">Navigate Forward</button>
+    <button block (click)="goToSlide(2)">Navigate to 3rd Slide</button>
+    <button block (click)="getIndex()">Get Index</button>
   </ion-slide>
   <ion-slide padding>
     <h1>Slide 3</h1>
+    <button block (click)="goToPrevSlide()">Navigate Back</button>
+    <button block (click)="goToNextSlide()">Navigate Forward</button>
     <button block (click)="getIndex()">Get Index</button>
   </ion-slide>
 </ion-slides>