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Move change image source's methods inside viewer

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Added the methods inside the extend function, so that they appear
as properties. Since we cannot reference properties of an object inside
said object, we extract them as properties when needed.
This commit is contained in:
Luis Nieto 2021-07-09 16:09:46 -05:00
parent 5889f34695
commit 1f73dde983
1 changed files with 38 additions and 23 deletions
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59
src/viewer.js
View File

@ -1646,8 +1646,8 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
//////////////////////////////////////////////////////////////////////////
var onFocusHandler = $.delegate( this, onFocus ),
onBlurHandler = $.delegate( this, onBlur ),
onNextHandler = $.delegate( this, onNext ),
onPreviousHandler = $.delegate( this, onPrevious ),
onNextHandler = $.delegate( this, this['goToNextPage'] ),
onPreviousHandler = $.delegate( this, this['goToPreviousPage'] ),
navImages = this.navImages,
useGroup = true;
@ -2316,7 +2316,40 @@ $.extend( $.Viewer.prototype, $.EventSource.prototype, $.ControlDock.prototype,
this.world.resetItems();
this.forceRedraw();
}
},
/**
* Sets the image source to the source with index equal to
* currentIndex - 1. Changes current image in sequence mode.
* If specified, wraps around (see navPrevNextWrap in
* {@link OpenSeadragon.Options})
*
* @method
*/
goToPreviousPage: function () {
var previous = this._sequenceIndex - 1;
if(this.navPrevNextWrap && previous < 0){
previous += this.tileSources.length;
}
this.goToPage( previous );
},
/**
* Sets the image source to the source with index equal to
* currentIndex + 1. Changes current image in sequence mode.
* If specified, wraps around (see navPrevNextWrap in
* {@link OpenSeadragon.Options})
*
* @method
*/
goToNextPage: function () {
var next = this._sequenceIndex + 1;
if(this.navPrevNextWrap && next >= this.tileSources.length){
next = 0;
}
this.goToPage( next );
},
});
@ -2783,10 +2816,10 @@ function onCanvasKeyPress( event ) {
event.preventDefault = true;
break;
case 106: //j - previous image source
onPrevious.bind(this)();
this.goToPreviousPage();
break;
case 107: //k - next image source
onNext.bind(this)();
this.goToNextPage();
break;
default:
// console.log( 'navigator keycode %s', event.keyCode );
@ -3677,22 +3710,4 @@ function onFlip() {
this.viewport.toggleFlip();
}
function onPrevious(){
var previous = this._sequenceIndex - 1;
if(this.navPrevNextWrap && previous < 0){
previous += this.tileSources.length;
}
this.goToPage( previous );
}
function onNext(){
var next = this._sequenceIndex + 1;
if(this.navPrevNextWrap && next >= this.tileSources.length){
next = 0;
}
this.goToPage( next );
}
}( OpenSeadragon ));