mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/VisualEditor
synced 2024-12-03 02:16:51 +00:00
143b086c74
Objectives: * Scroll when needed to show highlighted (with keyboard) or selected (by any means) options in select widgets * Allow clipping and automatic scrolling for certain elements when they are otherwise going to be rendered partially out of view Changes: *.php * Add links to new file ve.ui.Widget.css, ve.ui.Dialog.css * Removed unneeded x-axis overflow rules ve.ui.ClippableElement.js, ve.ui.Element.css * New mixin, adds visible area clipping support to an element ve.ui.PopupToolGroup.js, ve.ui.MenuWidget.js * Mixin clippable element ve.ui.OptionWidget.js, ve.ui.OutlineItemWidget.js * Add scroll-into-view configuration for option widgets ve.ui.SearchWidget.js * Scroll items into view when highlighting with keyboard ve.Element.js * Add getBorders, getDimensions, getClosestScrollableContainer and scrollIntoView static methods * Add getClosestScrollableElementContainer and scrollElementIntoView methods Bug: 53610 Change-Id: Ie21faa973a68f517c7cfce8bd879b5317f536365
122 lines
3.6 KiB
JavaScript
122 lines
3.6 KiB
JavaScript
/*!
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* VisualEditor UserInterface ClippableElement class.
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*
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* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
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* @license The MIT License (MIT); see LICENSE.txt
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*/
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/**
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* Clippable element.
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*
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* @class
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* @abstract
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*
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* @constructor
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* @param {jQuery} $clippable Group element
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*/
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ve.ui.ClippableElement = function VeUiClippableElement( $clippable ) {
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// Properties
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this.$clippable = $clippable;
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this.clipping = false;
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this.clipped = false;
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this.$clippableContainer = null;
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this.$clippableWindow = null;
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this.onClippableContainerScrollHandler = ve.bind( this.clip, this );
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this.onClippableWindowResizeHandler = ve.bind( this.clip, this );
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// Initialization
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this.$clippable.addClass( 've-ui-clippableElement-clippable' );
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};
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/* Methods */
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/**
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* Set clipping.
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*
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* @method
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* @param {boolean} value Enable clipping
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* @chainable
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*/
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ve.ui.ClippableElement.prototype.setClipping = function ( value ) {
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value = !!value;
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if ( this.clipping !== value ) {
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this.clipping = value;
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if ( this.clipping ) {
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this.$clippableContainer = this.$$( this.getClosestScrollableElementContainer() )
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.on( 'scroll', this.onClippableContainerScrollHandler );
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this.$clippableWindow = this.$$( this.getElementWindow() )
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.on( 'resize', this.onClippableWindowResizeHandler );
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// Initial clip after visible
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setTimeout( ve.bind( this.clip, this ) );
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} else {
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this.$clippableContainer.off( 'scroll', this.onClippableContainerScrollHandler );
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this.$clippableContainer = null;
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this.$clippableWindow.off( 'resize', this.onClippableWindowResizeHandler );
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this.$clippableWindow = null;
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}
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}
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return this;
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};
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/**
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* Check if the element will be clipped to fit the visible area of the nearest scrollable container.
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*
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* @method
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* @return {boolean} Element will be clipped to the visible area
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*/
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ve.ui.ClippableElement.prototype.isClipping = function () {
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return this.clipping;
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};
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/**
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* Check if the bottom or right of the element is being clipped by the nearest scrollable container.
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*
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* @method
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* @return {boolean} Part of the element is being clipped
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*/
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ve.ui.ClippableElement.prototype.isClipped = function () {
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return this.clipped;
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};
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/**
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* Clip element to visible boundaries and allow scrolling when needed.
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*
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* Element will be clipped the bottom or right of the element is within 10px of the edge of, or
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* overlapped by, the visible area of the nearest scrollable container.
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*
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* @method
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* @chainable
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*/
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ve.ui.ClippableElement.prototype.clip = function () {
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var buffer = 10,
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cOffset = this.$clippable.offset(),
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ccOffset = this.$clippableContainer.offset() || { 'top': 0, 'left': 0 },
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ccHeight = this.$clippableContainer.innerHeight() - buffer,
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ccWidth = this.$clippableContainer.innerWidth() - buffer,
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scrollTop = this.$clippableContainer.scrollTop(),
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scrollLeft = this.$clippableContainer.scrollLeft(),
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desiredWidth = ( ccOffset.left + scrollLeft + ccWidth ) - cOffset.left,
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desiredHeight = ( ccOffset.top + scrollTop + ccHeight ) - cOffset.top,
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naturalWidth = this.$clippable.prop( 'scrollWidth' ),
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naturalHeight = this.$clippable.prop( 'scrollHeight' ),
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clipWidth = desiredWidth < naturalWidth,
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clipHeight = desiredHeight < naturalHeight;
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if ( clipWidth ) {
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this.$clippable.css( { 'overflow-x': 'auto', 'width': desiredWidth } );
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} else {
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this.$clippable.css( { 'overflow-x': '', 'width': '' } );
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}
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if ( clipHeight ) {
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this.$clippable.css( { 'overflow-y': 'auto', 'height': desiredHeight } );
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} else {
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this.$clippable.css( { 'overflow-y': '', 'height': '' } );
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}
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this.clipped = clipWidth || clipHeight;
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return this;
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};
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