mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/RevisionSlider
synced 2024-11-15 11:40:43 +00:00
894 lines
29 KiB
JavaScript
894 lines
29 KiB
JavaScript
( function ( mw, $ ) {
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/**
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* Module handling the view logic of the RevisionSlider slider
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*
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* @param {Slider} slider
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* @constructor
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*/
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var SliderView = function ( slider ) {
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this.slider = slider;
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this.diffPage = new mw.libs.revisionSlider.DiffPage( this.slider.getRevisions() );
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};
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$.extend( SliderView.prototype, {
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revisionWidth: 16,
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containerMargin: 140,
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outerMargin: 20,
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/**
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* @type {jQuery}
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*/
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$element: null,
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/**
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* @type {DiffPage}
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*/
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diffPage: null,
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/**
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* @type {Slider}
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*/
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slider: null,
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/**
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* @type {Pointer}
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*/
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pointerOlder: null,
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/**
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* @type {Pointer}
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*/
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pointerNewer: null,
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/**
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* @type {OO.ui.ButtonWidget}
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*/
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backwardArrowButton: null,
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/**
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* @type {OO.ui.ButtonWidget}
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*/
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forwardArrowButton: null,
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/**
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* @type {string}
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*
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* Value of scrollLeft property when in RTL mode varies between browser. This identifies
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* an implementation used by user's browser:
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* - 'default': 0 is the left-most position, values increase when scrolling right (same as scrolling from left to right in LTR mode)
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* - 'negative': 0 is right-most position, values decrease when scrolling left (ie. all values except 0 are negative)
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* - 'reverse': 0 is right-most position, values incrase when scrolling left
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*/
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rtlScrollLeftType: 'default',
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/**
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* @type {boolean}
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*/
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noMoreNewerRevisions: false,
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/**
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* @type {boolean}
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*/
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noMoreOlderRevisions: false,
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/**
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* @type {string}
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*/
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dir: null,
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render: function ( $container ) {
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var containerWidth = this.calculateSliderContainerWidth(),
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$revisions = this.slider.getRevisions().getView().render( this.revisionWidth ),
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sliderArrowView = new mw.libs.revisionSlider.SliderArrowView( this ),
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self = this;
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this.dir = $container.css( 'direction' ) || 'ltr';
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if ( this.dir === 'rtl' ) {
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this.rtlScrollLeftType = this.determineRtlScrollType();
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}
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this.pointerOlder = this.pointerOlder || new mw.libs.revisionSlider.Pointer( 'mw-revslider-pointer-older' );
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this.pointerNewer = this.pointerNewer || new mw.libs.revisionSlider.Pointer( 'mw-revslider-pointer-newer' );
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this.backwardArrowButton = sliderArrowView.renderBackwardArrow();
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this.forwardArrowButton = sliderArrowView.renderForwardArrow();
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this.$element = $( '<div>' )
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.addClass( 'mw-revslider-revision-slider' )
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.css( {
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direction: $container.css( 'direction' ),
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width: ( containerWidth + this.containerMargin ) + 'px'
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} )
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.append(
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this.backwardArrowButton.$element,
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this.renderRevisionsContainer( containerWidth, $revisions ),
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this.forwardArrowButton.$element,
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mw.libs.revisionSlider.HelpButtonView.render(),
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$( '<div>' ).css( { clear: 'both' } ),
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this.renderPointerContainer( containerWidth ),
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this.pointerOlder.getLine().render(), this.pointerNewer.getLine().render()
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);
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this.initPointers( $revisions );
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this.$element.find( '.mw-revslider-revision-wrapper' ).on( 'click', null, { view: self, revisionsDom: $revisions }, this.revisionWrapperClickHandler );
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this.slider.setRevisionsPerWindow( this.$element.find( '.mw-revslider-revisions-container' ).width() / this.revisionWidth );
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this.initializePointers( this.getOldRevElement( $revisions ), this.getNewRevElement( $revisions ) );
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this.resetRevisionStylesBasedOnPointerPosition( $revisions );
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$container.html( this.$element );
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this.slide( Math.floor( ( this.pointerNewer.getPosition() - 1 ) / this.slider.getRevisionsPerWindow() ), 0 );
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this.diffPage.addHandlersToCoreLinks( this );
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this.diffPage.replaceState( mw.config.get( 'extRevisionSliderOldRev' ), mw.config.get( 'extRevisionSliderNewRev' ), this );
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this.diffPage.initOnPopState( this );
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},
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/**
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* Renders the revisions container and adds the revisions to it
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*
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* @param {number} containerWidth
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* @param {jQuery} $revisions
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* @return {jQuery} the revisions container
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*/
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renderRevisionsContainer: function( containerWidth, $revisions ) {
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return $( '<div>' )
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.addClass( 'mw-revslider-revisions-container' )
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.css( {
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width: containerWidth + 'px'
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} )
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.append( $revisions );
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},
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/**
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* Renders the pointer container and adds the pointers to it
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*
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* @param {number} containerWidth
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* @return {jQuery} the pointer container
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*/
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renderPointerContainer: function( containerWidth ) {
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var pointerContainerSideOffset = 53,
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pointerContainerWidth = containerWidth + this.revisionWidth - 1,
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pointerContainerStyle;
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pointerContainerStyle = { left: pointerContainerSideOffset + 'px', width: pointerContainerWidth + 'px' };
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if ( this.dir === 'rtl' ) {
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// Due to properly limit dragging a pointer on the right side of the screen,
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// there must some extra space added to the right of the revision bar container
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// For this reason right position of the pointer container in the RTL mode is
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// a bit moved off right compared to its left position in the LTR mode
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pointerContainerSideOffset = pointerContainerSideOffset - this.revisionWidth + 1;
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pointerContainerStyle = { right: pointerContainerSideOffset + 'px', width: pointerContainerWidth + 'px' };
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}
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return $( '<div>' )
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.addClass( 'mw-revslider-pointer-container' )
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.css( pointerContainerStyle )
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.append( this.pointerOlder.getView().render(), this.pointerNewer.getView().render() );
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},
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/**
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* Initializes the pointer dragging logic
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*
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* @param {jQuery} $revisions
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*/
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initPointers: function( $revisions ) {
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var $pointers,
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escapePressed = false;
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$pointers = this.$element.find( '.mw-revslider-pointer' );
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$( 'body' ).keydown( function( e ) {
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if ( e.which === 27 ) {
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escapePressed = true;
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$pointers.trigger( 'mouseup' );
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}
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} );
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$pointers.draggable( this.buildDraggableOptions( escapePressed, $revisions ) );
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},
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/**
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* Build options for the draggable
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*
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* @param {boolean} escapePressed
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* @param {jQuery} $revisions
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* @return {Object}
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*/
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buildDraggableOptions: function( escapePressed, $revisions ) {
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var lastValidLeftPos,
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self = this;
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return {
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axis: 'x',
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grid: [ this.revisionWidth, null ],
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containment: '.mw-revslider-pointer-container',
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start: function() {
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self.setPointerDragCursor();
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self.fadeOutPointerLines();
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escapePressed = false;
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},
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stop: function() {
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var $p = $( this ),
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relativeIndex = self.getRelativePointerIndex( $p ),
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pointer = self.whichPointer( $p ),
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revId1, revId2;
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self.removePointerDragCursor();
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if ( escapePressed ) {
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self.updatePointerPositionAttributes();
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self.resetPointerStylesBasedOnPosition();
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return;
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}
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mw.track( 'counter.MediaWiki.RevisionSlider.event.pointerMove' );
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pointer.setPosition( self.slider.getOldestVisibleRevisionIndex() + relativeIndex );
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self.updatePointerPositionAttributes();
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self.resetPointerStylesBasedOnPosition();
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self.resetRevisionStylesBasedOnPointerPosition( $revisions );
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revId1 = self.getRevElementAtPosition(
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$revisions, self.pointerOlder.getPosition()
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).data( 'revid' );
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revId2 = self.getRevElementAtPosition(
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$revisions, self.pointerNewer.getPosition()
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).data( 'revid' );
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self.refreshRevisions( revId1, revId2 );
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self.redrawPointerLines();
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},
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drag: function( event, ui ) {
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var olderLeftPos, newerLeftPos,
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isNew = $( this ).hasClass( 'mw-revslider-pointer-newer' );
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ui.position.left = Math.min(
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ui.position.left,
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self.getNewestVisibleRevisonLeftPos()
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);
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olderLeftPos = self.pointerOlder.getView().getElement().position().left;
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newerLeftPos = self.pointerNewer.getView().getElement().position().left;
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if ( ui.position.left === ( isNew ? olderLeftPos : newerLeftPos ) ) {
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ui.position.left = lastValidLeftPos;
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} else {
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lastValidLeftPos = ui.position.left;
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if ( self.dir === 'ltr' ) {
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self.resetPointerColorsBasedOnValues( olderLeftPos, newerLeftPos );
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} else {
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self.resetPointerColorsBasedOnValues( newerLeftPos, olderLeftPos );
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}
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}
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},
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revert: function() {
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return escapePressed;
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}
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};
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},
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setPointerDragCursor: function() {
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$( '.mw-revslider-revision-wrapper' )
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.addClass( 'mw-revslider-pointer-cursor' );
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},
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removePointerDragCursor: function() {
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$( '.mw-revslider-revision-wrapper' )
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.removeClass( 'mw-revslider-pointer-cursor' );
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},
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/**
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* Get the relative index for a pointer.
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*
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* @param {jQuery} $pointer
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* @return {number}
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*/
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getRelativePointerIndex: function( $pointer ) {
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var pos = $pointer.position().left,
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pointer = this.whichPointer( $pointer );
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if ( this.dir === 'rtl' ) {
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pos = pointer.getView().getAdjustedLeftPositionWhenRtl( pos );
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}
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return Math.ceil( ( pos + this.revisionWidth / 2 ) / this.revisionWidth );
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},
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getNewestVisibleRevisonLeftPos: function() {
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return $( '.mw-revslider-revisions-container' ).width() - this.revisionWidth;
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},
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revisionWrapperClickHandler: function ( e ) {
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var pClicked, pOther,
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$revWrap = $( this ),
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view = e.data.view,
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$revisions = e.data.revisionsDom,
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$clickedRev = $revWrap.find( '.mw-revslider-revision' ),
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hasClickedTop = e.pageY - $revWrap.offset().top < $revWrap.height() / 2,
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pOld = view.getOldRevPointer(),
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pNew = view.getNewRevPointer(),
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targetPos = +$clickedRev.attr( 'data-pos' );
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pClicked = hasClickedTop ? pNew : pOld;
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pOther = hasClickedTop ? pOld : pNew;
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if ( targetPos === pOther.getPosition() ) {
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return false;
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}
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pClicked.setPosition( targetPos );
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view.updatePointerPositionAttributes();
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view.refreshRevisions(
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+view.getRevElementAtPosition( $revisions, pOther.getPosition() ).data( 'revid' ),
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+$clickedRev.data( 'revid' )
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);
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view.resetPointerColorsBasedOnValues( view.pointerOlder.getPosition(), view.pointerNewer.getPosition() );
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view.resetRevisionStylesBasedOnPointerPosition( $revisions );
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view.alignPointers();
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},
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/**
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* Returns the pointer that points to the older revision
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*
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* @return {Pointer}
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*/
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getOldRevPointer: function () {
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return this.pointerOlder.getPosition() <= this.pointerNewer.getPosition() ? this.pointerOlder : this.pointerNewer;
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},
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/**
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* Returns the pointer that points to the newer revision
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*
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* @return {Pointer}
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*/
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getNewRevPointer: function () {
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return this.pointerOlder.getPosition() > this.pointerNewer.getPosition() ? this.pointerOlder : this.pointerNewer;
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},
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/**
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* Refreshes the diff page to show the diff for the specified revisions
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*
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* @param {number} revId1
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* @param {number} revId2
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*/
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refreshRevisions: function ( revId1, revId2 ) {
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var oldRev = Math.min( revId1, revId2 ),
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newRev = Math.max( revId1, revId2 );
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this.diffPage.refresh( oldRev, newRev, this );
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this.diffPage.pushState( oldRev, newRev, this );
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},
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showNextDiff: function () {
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this.pointerOlder.setPosition( this.pointerNewer.getPosition() );
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this.pointerNewer.setPosition( this.pointerNewer.getPosition() + 1 );
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this.resetAndRefreshRevisions();
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},
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showPrevDiff: function () {
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this.pointerNewer.setPosition( this.pointerOlder.getPosition() );
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this.pointerOlder.setPosition( this.pointerOlder.getPosition() - 1 );
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this.resetAndRefreshRevisions();
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},
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resetAndRefreshRevisions: function() {
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this.slide( 0 );
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this.resetPointerStylesBasedOnPosition();
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this.resetRevisionStylesBasedOnPointerPosition(
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this.$element.find( 'div.mw-revslider-revisions' )
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);
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this.updatePointerPositionAttributes();
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this.refreshRevisions(
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$( '.mw-revslider-revision[data-pos="' + this.pointerOlder.getPosition() + '"]' ).attr( 'data-revid' ),
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$( '.mw-revslider-revision[data-pos="' + this.pointerNewer.getPosition() + '"]' ).attr( 'data-revid' )
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);
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},
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/**
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* @param {jQuery} $revs
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* @param {number} pos
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* @return {jQuery}
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*/
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getRevElementAtPosition: function ( $revs, pos ) {
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return $revs.find( 'div.mw-revslider-revision[data-pos="' + pos + '"]' );
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},
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/**
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* Gets the jQuery element of the older selected revision
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*
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* @param {jQuery} $revs
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* @return {jQuery}
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*/
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getOldRevElement: function ( $revs ) {
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return $revs.find( 'div.mw-revslider-revision[data-revid="' + mw.config.get( 'extRevisionSliderOldRev' ) + '"]' );
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},
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/**
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* Gets the jQuery element of the newer selected revision
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*
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* @param {jQuery} $revs
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* @return {jQuery}
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*/
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getNewRevElement: function ( $revs ) {
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return $revs.find( 'div.mw-revslider-revision[data-revid="' + mw.config.get( 'extRevisionSliderNewRev' ) + '"]' );
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},
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/**
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* Initializes the Pointer objects based on the selected revisions
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*
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* @param {jQuery} $oldRevElement
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* @param {jQuery} $newRevElement
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*/
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initializePointers: function ( $oldRevElement, $newRevElement ) {
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if ( this.pointerOlder.getPosition() !== 0 || this.pointerNewer.getPosition() !== 0 ) {
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return;
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}
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if ( $oldRevElement.length === 0 && $newRevElement.length === 0 ) {
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// Note: this is currently caught in init.js
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throw 'RS-revs-not-specified';
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}
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if ( $oldRevElement.length !== 0 ) {
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this.pointerOlder.setPosition( $oldRevElement.data( 'pos' ) );
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} else {
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this.pointerOlder.setPosition( -1 );
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}
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this.pointerNewer.setPosition( $newRevElement.data( 'pos' ) );
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this.resetPointerStylesBasedOnPosition();
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this.updatePointerPositionAttributes();
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},
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/**
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* Adjusts the colors of the pointers without changing the upper/lower property based on values `p1` and `p2`.
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* Used e.g. when pointers get dragged past one another.
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*
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* @param {number} p1
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* @param {number} p2
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*/
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resetPointerColorsBasedOnValues: function ( p1, p2 ) {
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if ( p1 > p2 ) {
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this.pointerOlder.getView().getElement().removeClass( 'mw-revslider-pointer-oldid' ).addClass( 'mw-revslider-pointer-newid' );
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this.pointerNewer.getView().getElement().removeClass( 'mw-revslider-pointer-newid' ).addClass( 'mw-revslider-pointer-oldid' );
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} else {
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this.pointerOlder.getView().getElement().removeClass( 'mw-revslider-pointer-newid' ).addClass( 'mw-revslider-pointer-oldid' );
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this.pointerNewer.getView().getElement().removeClass( 'mw-revslider-pointer-oldid' ).addClass( 'mw-revslider-pointer-newid' );
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}
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},
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/**
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* Resets the pointer styles (upper/lower, blue/yellow) based on their position.
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*/
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resetPointerStylesBasedOnPosition: function () {
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this.getNewRevPointer().getView().getElement().removeClass( 'mw-revslider-pointer-oldid' ).addClass( 'mw-revslider-pointer-newid' )
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.removeClass( 'mw-revslider-pointer-lower' ).addClass( 'mw-revslider-pointer-upper' );
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this.getOldRevPointer().getView().getElement().removeClass( 'mw-revslider-pointer-newid' ).addClass( 'mw-revslider-pointer-oldid' )
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.removeClass( 'mw-revslider-pointer-upper' ).addClass( 'mw-revslider-pointer-lower' );
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},
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/**
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* Highlights revisions between the pointers
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*
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* @param {jQuery} $revisions
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*/
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resetRevisionStylesBasedOnPointerPosition: function ( $revisions ) {
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var olderRevPosition = this.getOldRevPointer().getPosition(),
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newerRevPosition = this.getNewRevPointer().getPosition(),
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positionIndex = olderRevPosition + 1;
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$revisions.find( 'div.mw-revslider-revision' )
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.removeClass( 'mw-revslider-revision-intermediate mw-revslider-revision-old mw-revslider-revision-new' );
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this.getRevElementAtPosition( $revisions, olderRevPosition ).addClass( 'mw-revslider-revision-old' );
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this.getRevElementAtPosition( $revisions, newerRevPosition ).addClass( 'mw-revslider-revision-new' );
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while ( positionIndex < newerRevPosition ) {
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this.getRevElementAtPosition( $revisions, positionIndex ).addClass( 'mw-revslider-revision-intermediate' );
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positionIndex++;
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}
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},
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/**
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* Updates value of pointers' position data attribute
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*/
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updatePointerPositionAttributes: function () {
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this.getNewRevPointer().getView().getElement().attr(
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'data-pos',
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this.getNewRevPointer().getPosition()
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);
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this.getOldRevPointer().getView().getElement().attr(
|
|
'data-pos',
|
|
this.getOldRevPointer().getPosition()
|
|
);
|
|
},
|
|
|
|
/**
|
|
* Redraws the lines for the pointers
|
|
*/
|
|
redrawPointerLines: function () {
|
|
this.fadeInPointerLines();
|
|
$( '.mw-revslider-pointer-line-upper, .mw-revslider-pointer-line-lower' )
|
|
.removeClass( 'mw-revslider-bottom-line mw-revslider-left-line mw-revslider-right-line' );
|
|
this.pointerOlder.getLine().drawLine();
|
|
this.pointerNewer.getLine().drawLine();
|
|
},
|
|
|
|
/**
|
|
* Fades out the lines for the pointers
|
|
*/
|
|
fadeOutPointerLines: function () {
|
|
$( '.mw-revslider-pointer-line' ).fadeTo( 0, 0.3 );
|
|
},
|
|
|
|
/**
|
|
* Fades in the lines for the pointers
|
|
*/
|
|
fadeInPointerLines: function () {
|
|
$( '.mw-revslider-pointer-line' ).fadeTo( 0, 1 );
|
|
},
|
|
|
|
/**
|
|
* @return {number}
|
|
*/
|
|
calculateSliderContainerWidth: function () {
|
|
return Math.min(
|
|
this.slider.getRevisions().getLength(),
|
|
mw.libs.revisionSlider.calculateRevisionsPerWindow( this.containerMargin + this.outerMargin, this.revisionWidth )
|
|
) * this.revisionWidth;
|
|
},
|
|
|
|
slide: function ( direction, duration ) {
|
|
var animateObj,
|
|
$animatedElement = this.$element.find( '.mw-revslider-revisions-container' ),
|
|
self = this;
|
|
|
|
this.slider.slide( direction );
|
|
this.pointerOlder.getView().getElement().draggable( 'disable' );
|
|
this.pointerNewer.getView().getElement().draggable( 'disable' );
|
|
|
|
if ( this.slider.isAtStart() ) {
|
|
this.backwardArrowButton.setDisabled( true );
|
|
} else {
|
|
this.backwardArrowButton.setDisabled( false );
|
|
}
|
|
if ( this.slider.isAtEnd() ) {
|
|
this.forwardArrowButton.setDisabled( true );
|
|
} else {
|
|
this.forwardArrowButton.setDisabled( false );
|
|
}
|
|
|
|
animateObj = { scrollLeft: this.slider.getOldestVisibleRevisionIndex() * this.revisionWidth };
|
|
if ( this.dir === 'rtl' ) {
|
|
animateObj.scrollLeft = this.getRtlScrollLeft( $animatedElement, animateObj.scrollLeft );
|
|
}
|
|
|
|
$animatedElement.animate(
|
|
animateObj,
|
|
duration,
|
|
null,
|
|
function () {
|
|
self.pointerOlder.getView().getElement().draggable( 'enable' );
|
|
self.pointerNewer.getView().getElement().draggable( 'enable' );
|
|
|
|
if ( self.slider.isAtStart() && !self.noMoreOlderRevisions ) {
|
|
self.addOlderRevisionsIfNeeded( $( '.mw-revslider-revision-slider' ) );
|
|
}
|
|
if ( self.slider.isAtEnd() && !self.noMoreNewerRevisions ) {
|
|
self.addNewerRevisionsIfNeeded( $( '.mw-revslider-revision-slider' ) );
|
|
}
|
|
}
|
|
);
|
|
|
|
this.alignPointers( duration );
|
|
},
|
|
|
|
/**
|
|
* Based on jQuery RTL Scroll Type Detector plugin by othree: https://github.com/othree/jquery.rtl-scroll-type
|
|
*
|
|
* @return {string} - 'default', 'negative' or 'reverse'
|
|
*/
|
|
determineRtlScrollType: function () {
|
|
var $dummy = $( '<div>' )
|
|
.css( {
|
|
dir: 'rtl',
|
|
width: '1px',
|
|
height: '1px',
|
|
position: 'absolute',
|
|
top: '-1000px',
|
|
overflow: 'scroll'
|
|
} )
|
|
.text( 'A' )
|
|
.appendTo( 'body' )[ 0 ];
|
|
if ( $dummy.scrollLeft > 0 ) {
|
|
return 'default';
|
|
} else {
|
|
$dummy.scrollLeft = 1;
|
|
if ( $dummy.scrollLeft === 0 ) {
|
|
return 'negative';
|
|
}
|
|
}
|
|
return 'reverse';
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $element
|
|
* @param {number} scrollLeft
|
|
* @return {number}
|
|
*/
|
|
getRtlScrollLeft: function ( $element, scrollLeft ) {
|
|
if ( this.rtlScrollLeftType === 'reverse' ) {
|
|
return scrollLeft;
|
|
}
|
|
if ( this.rtlScrollLeftType === 'negative' ) {
|
|
return -scrollLeft;
|
|
}
|
|
return $element.prop( 'scrollWidth' ) - $element.width() - scrollLeft;
|
|
},
|
|
|
|
alignPointers: function ( duration ) {
|
|
var self = this;
|
|
|
|
this.fadeOutPointerLines();
|
|
|
|
this.pointerOlder.getView()
|
|
.slideToSideOrPosition( this.slider, duration )
|
|
.promise().done( function () {
|
|
self.resetPointerStylesBasedOnPosition();
|
|
self.redrawPointerLines();
|
|
} );
|
|
this.pointerNewer.getView()
|
|
.slideToSideOrPosition( this.slider, duration )
|
|
.promise().done( function () {
|
|
self.resetPointerStylesBasedOnPosition();
|
|
self.redrawPointerLines();
|
|
} );
|
|
},
|
|
|
|
/**
|
|
* Returns the Pointer object that belongs to the passed element
|
|
*
|
|
* @param {jQuery} $e
|
|
* @return {Pointer}
|
|
*/
|
|
whichPointer: function ( $e ) {
|
|
return $e.hasClass( 'mw-revslider-pointer-older' ) ? this.pointerOlder : this.pointerNewer;
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
*/
|
|
addNewerRevisionsIfNeeded: function ( $slider ) {
|
|
var api = new mw.libs.revisionSlider.Api( mw.util.wikiScript( 'api' ) ),
|
|
self = this,
|
|
revisions = this.slider.getRevisions().getRevisions(),
|
|
revisionCount = mw.libs.revisionSlider.calculateRevisionsPerWindow( this.containerMargin + this.outerMargin, this.revisionWidth ),
|
|
revs;
|
|
if ( this.noMoreNewerRevisions || !this.slider.isAtEnd() ) {
|
|
return;
|
|
}
|
|
api.fetchRevisionData( mw.config.get( 'wgPageName' ), {
|
|
startId: revisions[ revisions.length - 1 ].getId(),
|
|
dir: 'newer',
|
|
limit: revisionCount + 1,
|
|
knownUserGenders: this.slider.getRevisions().getUserGenders()
|
|
} ).then( function ( data ) {
|
|
revs = data.revisions.slice( 1 );
|
|
if ( revs.length === 0 ) {
|
|
self.noMoreNewerRevisions = true;
|
|
return;
|
|
}
|
|
|
|
self.addRevisionsAtEnd( $slider, revs );
|
|
|
|
if ( data.continue === undefined ) {
|
|
self.noMoreNewerRevisions = true;
|
|
}
|
|
} );
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
*/
|
|
addOlderRevisionsIfNeeded: function ( $slider ) {
|
|
var api = new mw.libs.revisionSlider.Api( mw.util.wikiScript( 'api' ) ),
|
|
self = this,
|
|
revisions = this.slider.getRevisions().getRevisions(),
|
|
revisionCount = mw.libs.revisionSlider.calculateRevisionsPerWindow( this.containerMargin + this.outerMargin, this.revisionWidth ),
|
|
revs,
|
|
precedingRevisionSize = 0;
|
|
if ( this.noMoreOlderRevisions || !this.slider.isAtStart() ) {
|
|
return;
|
|
}
|
|
api.fetchRevisionData( mw.config.get( 'wgPageName' ), {
|
|
startId: revisions[ 0 ].getId(),
|
|
dir: 'older',
|
|
// fetch an extra revision if there are more older revision than the current "window",
|
|
// this makes it possible to correctly set a size of the bar related to the oldest revision to add
|
|
limit: revisionCount + 2,
|
|
knownUserGenders: this.slider.getRevisions().getUserGenders()
|
|
} ).then( function ( data ) {
|
|
revs = data.revisions.slice( 1 ).reverse();
|
|
if ( revs.length === 0 ) {
|
|
self.noMoreOlderRevisions = true;
|
|
return;
|
|
}
|
|
|
|
if ( revs.length === revisionCount + 1 ) {
|
|
precedingRevisionSize = revs[ 0 ].size;
|
|
revs = revs.slice( 1 );
|
|
}
|
|
self.addRevisionsAtStart( $slider, revs, precedingRevisionSize );
|
|
|
|
if ( data.continue === undefined ) {
|
|
self.noMoreOlderRevisions = true;
|
|
}
|
|
} );
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
* @param {Array} revs
|
|
*/
|
|
addRevisionsAtEnd: function ( $slider, revs ) {
|
|
var revPositionOffset = this.slider.getRevisions().getLength(),
|
|
$revisions = $slider.find( '.mw-revslider-revisions-container .mw-revslider-revisions' ),
|
|
revisionsToRender,
|
|
$addedRevisions;
|
|
|
|
this.slider.getRevisions().push( mw.libs.revisionSlider.makeRevisions( revs ) );
|
|
|
|
// Pushed revisions have their relative sizes set correctly with regard to the last previously
|
|
// loaded revision. This should be taken into account when rendering newly loaded revisions (tooltip)
|
|
revisionsToRender = this.slider.getRevisions().slice( revPositionOffset );
|
|
|
|
$addedRevisions = new mw.libs.revisionSlider.RevisionListView( revisionsToRender, this.dir ).render( this.revisionWidth, revPositionOffset );
|
|
|
|
this.addClickHandlerToRevisions( $addedRevisions, $revisions, this.revisionWrapperClickHandler );
|
|
|
|
$addedRevisions.find( '.mw-revslider-revision-wrapper' ).each( function () {
|
|
$revisions.append( $( this ) );
|
|
} );
|
|
|
|
if ( this.shouldExpandSlider( $slider ) ) {
|
|
this.expandSlider( $slider );
|
|
}
|
|
|
|
this.slider.getRevisions().getView().adjustRevisionSizes( $slider );
|
|
|
|
if ( !this.slider.isAtEnd() ) {
|
|
this.forwardArrowButton.setDisabled( false );
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
* @param {Array} revs
|
|
* @param {number} precedingRevisionSize optional size of the revision preceding the first of revs,
|
|
* used to correctly determine first revision's relative size
|
|
*/
|
|
addRevisionsAtStart: function ( $slider, revs, precedingRevisionSize ) {
|
|
var self = this,
|
|
$revisions = $slider.find( '.mw-revslider-revisions-container .mw-revslider-revisions' ),
|
|
$revisionContainer = $slider.find( '.mw-revslider-revisions-container' ),
|
|
revisionsToRender,
|
|
$addedRevisions,
|
|
pOld, pNew,
|
|
revIdOld, revIdNew,
|
|
revisionStyleResetRequired = false,
|
|
$oldRevElement,
|
|
scrollLeft;
|
|
|
|
this.slider.getRevisions().unshift( mw.libs.revisionSlider.makeRevisions( revs ), precedingRevisionSize );
|
|
|
|
$slider.find( '.mw-revslider-revision' ).each( function () {
|
|
$( this ).attr( 'data-pos', parseInt( $( this ).attr( 'data-pos' ), 10 ) + revs.length );
|
|
} );
|
|
|
|
// Pushed (unshifted) revisions have their relative sizes set correctly with regard to the last previously
|
|
// loaded revision. This should be taken into account when rendering newly loaded revisions (tooltip)
|
|
revisionsToRender = this.slider.getRevisions().slice( 0, revs.length );
|
|
|
|
$addedRevisions = new mw.libs.revisionSlider.RevisionListView( revisionsToRender, this.dir ).render( this.revisionWidth );
|
|
|
|
pOld = this.getOldRevPointer();
|
|
pNew = this.getNewRevPointer();
|
|
|
|
if ( pOld.getPosition() !== -1 ) {
|
|
pOld.setPosition( pOld.getPosition() + revisionsToRender.getLength() );
|
|
} else {
|
|
// Special case: old revision has been previously not loaded, need to initialize correct position
|
|
$oldRevElement = this.getOldRevElement( $addedRevisions );
|
|
if ( $oldRevElement.length !== 0 ) {
|
|
pOld.setPosition( $oldRevElement.data( 'pos' ) );
|
|
revisionStyleResetRequired = true;
|
|
}
|
|
|
|
}
|
|
pNew.setPosition( pNew.getPosition() + revisionsToRender.getLength() );
|
|
|
|
this.addClickHandlerToRevisions( $addedRevisions, $revisions, this.revisionWrapperClickHandler );
|
|
|
|
$( $addedRevisions.find( '.mw-revslider-revision-wrapper' ).get().reverse() ).each( function () { // TODO: this is horrible
|
|
$revisions.prepend( $( this ) );
|
|
} );
|
|
|
|
if ( revisionStyleResetRequired ) {
|
|
this.resetRevisionStylesBasedOnPointerPosition( $slider );
|
|
}
|
|
|
|
this.slider.setFirstVisibleRevisionIndex( this.slider.getOldestVisibleRevisionIndex() + revisionsToRender.getLength() );
|
|
|
|
revIdOld = self.getRevElementAtPosition( $revisions, pOld.getPosition() ).data( 'revid' );
|
|
revIdNew = self.getRevElementAtPosition( $revisions, pNew.getPosition() ).data( 'revid' );
|
|
this.diffPage.replaceState( revIdOld, revIdNew, this );
|
|
|
|
scrollLeft = this.slider.getOldestVisibleRevisionIndex() * this.revisionWidth;
|
|
$revisionContainer.scrollLeft( scrollLeft );
|
|
if ( this.dir === 'rtl' ) {
|
|
$revisionContainer.scrollLeft( self.getRtlScrollLeft( $revisionContainer, scrollLeft ) );
|
|
}
|
|
|
|
if ( this.shouldExpandSlider( $slider ) ) {
|
|
this.expandSlider( $slider );
|
|
}
|
|
|
|
this.slider.getRevisions().getView().adjustRevisionSizes( $slider );
|
|
|
|
this.backwardArrowButton.setDisabled( false );
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $revisions
|
|
* @param {jQuery} $allRevisions
|
|
* @param {Function} clickHandler
|
|
*/
|
|
addClickHandlerToRevisions: function ( $revisions, $allRevisions, clickHandler ) {
|
|
var self = this;
|
|
$revisions.find( '.mw-revslider-revision-wrapper' ).on(
|
|
'click',
|
|
null,
|
|
{ view: self, revisionsDom: $allRevisions },
|
|
clickHandler
|
|
);
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
* @return {boolean}
|
|
*/
|
|
shouldExpandSlider: function ( $slider ) {
|
|
var sliderWidth = $slider.width(),
|
|
maxAvailableWidth = this.calculateSliderContainerWidth() + this.containerMargin;
|
|
|
|
return !( this.noMoreNewerRevisions && this.noMoreOlderRevisions ) && sliderWidth < maxAvailableWidth;
|
|
},
|
|
|
|
/**
|
|
* @param {jQuery} $slider
|
|
*/
|
|
expandSlider: function ( $slider ) {
|
|
var containerWidth = this.calculateSliderContainerWidth(),
|
|
expandedRevisionWindowCapacity;
|
|
|
|
$slider.css( { width: ( containerWidth + this.containerMargin ) + 'px' } );
|
|
$slider.find( '.mw-revslider-revisions-container' ).css( { width: containerWidth + 'px' } );
|
|
$slider.find( '.mw-revslider-pointer-container' ).css( { width: containerWidth + this.revisionWidth - 1 + 'px' } );
|
|
|
|
expandedRevisionWindowCapacity = $slider.find( '.mw-revslider-revisions-container' ).width() / this.revisionWidth;
|
|
this.slider.setRevisionsPerWindow( expandedRevisionWindowCapacity );
|
|
|
|
this.slide( Math.floor( ( this.pointerNewer.getPosition() - 1 ) / expandedRevisionWindowCapacity ), 0 );
|
|
}
|
|
|
|
} );
|
|
|
|
mw.libs.revisionSlider = mw.libs.revisionSlider || {};
|
|
mw.libs.revisionSlider.SliderView = SliderView;
|
|
|
|
mw.libs.revisionSlider.calculateRevisionsPerWindow = function ( margin, revisionWidth ) {
|
|
return Math.floor( ( $( '#mw-content-text' ).width() - margin ) / revisionWidth );
|
|
};
|
|
}( mediaWiki, jQuery ) );
|