mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-12-18 09:10:59 +00:00
143 lines
3.8 KiB
JavaScript
143 lines
3.8 KiB
JavaScript
/**
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* Container for textual elements, which should be collapsed to one line by default.
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*
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* A "more / less" button is used to toggle additional lines.
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*
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* @class
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* @extends OO.ui.Element
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* @mixes OO.EventEmitter
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*
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* @constructor
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* @param {Object} config
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* @param {jQuery} config.$content
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*/
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ve.ui.MWExpandableContentElement = function VeUiMWExpandableContentElement( config ) {
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// Parent constructor
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ve.ui.MWExpandableContentElement.super.call( this, config );
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// Mixin constructors
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OO.EventEmitter.call( this );
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this.$content = config.$content;
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this.collapsed = true;
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this.toggle( false );
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};
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/* Inheritance */
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OO.inheritClass( ve.ui.MWExpandableContentElement, OO.ui.Element );
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OO.mixinClass( ve.ui.MWExpandableContentElement, OO.EventEmitter );
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/* Methods */
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/**
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* @private
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* @return {number}
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*/
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ve.ui.MWExpandableContentElement.prototype.getLineHeight = function () {
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return parseInt( this.$content.css( 'line-height' ) );
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};
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/**
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* @private
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* @return {number}
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*/
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ve.ui.MWExpandableContentElement.prototype.calculateCurrentTextHeight = function () {
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const currentHeight = this.$content.height(),
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expandedHeight = this.$content.css( 'height', 'auto' ).height();
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if ( expandedHeight !== currentHeight ) {
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this.$content.css( 'height', currentHeight );
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}
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return expandedHeight;
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};
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/**
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* @private
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*/
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ve.ui.MWExpandableContentElement.prototype.makeCollapsible = function () {
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this.button = new OO.ui.ButtonWidget( {
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framed: false,
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flags: [ 'progressive' ],
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label: ve.msg( 'visualeditor-expandable-more' ),
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classes: [ 've-ui-expandableContent-toggle' ],
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invisibleLabel: ve.ui.MWTransclusionDialog.static.isSmallScreen(),
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icon: 'expand'
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} ).on( 'click', this.onButtonClick.bind( this ) );
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this.$content.on( 'click', this.onDescriptionClick.bind( this ) )
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.addClass( 've-ui-expandableContent-collapsible' );
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this.$container = $( '<div>' )
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.addClass( 've-ui-expandableContent-container' )
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.append(
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$( '<div>' ).addClass( 've-ui-expandableContent-fade' ),
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this.button.$element
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)
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.appendTo( this.$element );
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};
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/**
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* @private
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*/
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ve.ui.MWExpandableContentElement.prototype.recalculateVisuals = function () {
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const height = this.calculateCurrentTextHeight() + this.button.$element.height(),
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collapsedHeight = this.getLineHeight(),
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label = this.collapsed ? 'visualeditor-expandable-more' : 'visualeditor-expandable-less';
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this.$content.css( 'height', this.collapsed ? collapsedHeight : height );
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this.$container.removeClass( 'oo-ui-element-hidden' )
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.height( collapsedHeight );
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// The following messages are used here:
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// * visualeditor-expandable-more
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// * visualeditor-expandable-less
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this.button.setLabel( ve.msg( label ) )
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.setInvisibleLabel( ve.ui.MWTransclusionDialog.static.isSmallScreen() )
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.setIcon( this.collapsed ? 'expand' : 'collapse' );
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};
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/**
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* @private
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*/
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ve.ui.MWExpandableContentElement.prototype.reset = function () {
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this.$content.css( 'height', 'auto' );
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this.$container.addClass( 'oo-ui-element-hidden' );
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this.button.setInvisibleLabel( false );
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};
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/**
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* @private
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*/
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ve.ui.MWExpandableContentElement.prototype.onButtonClick = function () {
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this.collapsed = !this.collapsed;
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this.recalculateVisuals();
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};
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/**
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* @private
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*/
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ve.ui.MWExpandableContentElement.prototype.onDescriptionClick = function () {
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if ( this.button.invisibleLabel ) {
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// Don't toggle the description if the user is trying to select the text.
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if ( window.getSelection().toString() === '' ) {
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this.onButtonClick();
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}
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}
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};
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ve.ui.MWExpandableContentElement.prototype.updateSize = function () {
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this.toggle( true );
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if ( Math.floor( this.calculateCurrentTextHeight() / this.getLineHeight() ) > 3 ) {
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if ( !this.$container ) {
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this.makeCollapsible();
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}
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this.recalculateVisuals();
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} else {
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if ( this.$container ) {
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this.reset();
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}
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}
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};
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