mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/RevisionSlider
synced 2024-11-16 12:00:12 +00:00
c57fe0f2b6
… and replace them with more trivial `function …() {}`. I
believe this does not make any difference. But I feel this
makes the code a little more straightforward.
The motivation for this patch is because a few other patches
change some of these function declarations, leaving a (in my
opinion) confusing mixture of styles behind.
Change-Id: Ib8928c4176a963afcf1fee1c785dd7bdc86c9706
130 lines
2.8 KiB
JavaScript
130 lines
2.8 KiB
JavaScript
/**
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* @external RevisionList
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* @external SliderView
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*/
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( function () {
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/**
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* Module handling the slider logic of the RevisionSlider
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*
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* @class Slider
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* @param {RevisionList} revisions
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* @constructor
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*/
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function Slider( revisions ) {
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this.revisions = revisions;
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this.view = new mw.libs.revisionSlider.SliderView( this );
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}
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/**
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* @class mw.libs.revisionSlider.Slider
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*/
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$.extend( Slider.prototype, {
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/**
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* @type {RevisionList}
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*/
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revisions: null,
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/**
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* @type {number}
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*/
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oldestVisibleRevisionIndex: 0,
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/**
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* @type {number}
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*/
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revisionsPerWindow: 0,
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/**
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* @type {SliderView}
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*/
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view: null,
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/**
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* @return {RevisionList}
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*/
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getRevisionList: function () {
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return this.revisions;
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},
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/**
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* @return {SliderView}
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*/
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getView: function () {
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return this.view;
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},
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/**
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* Sets the number of revisions that are visible at once (depending on browser window size)
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*
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* @param {number} n
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*/
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setRevisionsPerWindow: function ( n ) {
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this.revisionsPerWindow = n;
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},
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/**
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* @return {number}
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*/
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getRevisionsPerWindow: function () {
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return this.revisionsPerWindow;
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},
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/**
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* Returns the index of the oldest revision that is visible in the current window
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*
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* @return {number}
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*/
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getOldestVisibleRevisionIndex: function () {
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return this.oldestVisibleRevisionIndex;
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},
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/**
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* Returns the index of the newest revision that is visible in the current window
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*
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* @return {number}
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*/
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getNewestVisibleRevisionIndex: function () {
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return this.oldestVisibleRevisionIndex + this.revisionsPerWindow - 1;
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},
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/**
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* @return {boolean}
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*/
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isAtStart: function () {
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return this.getOldestVisibleRevisionIndex() === 0 || this.revisions.getLength() <= this.revisionsPerWindow;
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},
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/**
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* @return {boolean}
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*/
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isAtEnd: function () {
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return this.getNewestVisibleRevisionIndex() === this.revisions.getLength() - 1 || this.revisions.getLength() <= this.revisionsPerWindow;
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},
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/**
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* Sets the index of the first revision that is visible in the current window
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*
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* @param {number} value
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*/
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setFirstVisibleRevisionIndex: function ( value ) {
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this.oldestVisibleRevisionIndex = value;
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},
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/**
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* Sets the new oldestVisibleRevisionIndex after sliding in a direction
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*
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* @param {number} direction - Either -1, 0 or 1
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*/
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slide: function ( direction ) {
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var highestPossibleFirstRev = this.revisions.getLength() - this.revisionsPerWindow;
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this.oldestVisibleRevisionIndex += direction * this.revisionsPerWindow;
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this.oldestVisibleRevisionIndex = Math.min( this.oldestVisibleRevisionIndex, highestPossibleFirstRev );
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this.oldestVisibleRevisionIndex = Math.max( 0, this.oldestVisibleRevisionIndex );
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}
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} );
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mw.libs.revisionSlider = mw.libs.revisionSlider || {};
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mw.libs.revisionSlider.Slider = Slider;
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}() );
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