mirror of
https://github.com/EGroupware/egroupware.git
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200 lines
5.1 KiB
TypeScript
200 lines
5.1 KiB
TypeScript
/**
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* EGroupware eTemplate2 - JS Dynheight object
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage api
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* @link https://www.egroupware.org
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* @author Andreas Stöckel
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* @copyright EGroupware GmbH 2011-2021
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*/
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/*egw:use
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/vendor/bower-asset/jquery/dist/jquery.js;
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et2_core_inheritance;
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*/
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import {egw} from "../jsapi/egw_global";
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/**
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* Object which resizes an inner node to the maximum extend of an outer node
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* (without creating a scrollbar) - it achieves that by performing some very
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* nasty and time consuming calculations.
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*/
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export class et2_dynheight
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{
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private initialized: boolean = false;
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private outerNode: JQuery;
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private innerNode: JQuery;
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private minHeight: number = 0;
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private bottomNodes: any[] = [];
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private innerMargin: number = 0;
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private outerMargin: number = 0;
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constructor(_outerNode, _innerNode, _minHeight)
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{
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this.outerNode = jQuery(_outerNode);
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this.innerNode = jQuery(_innerNode);
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this.minHeight = _minHeight;
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}
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destroy()
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{
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this.outerNode = null;
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this.innerNode = null;
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this.bottomNodes = [];
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}
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/**
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* Resizes the inner node. When this is done, the callback function is
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* called.
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*
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* @param {function} _callback
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* @param {object} _context
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*/
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update( _callback, _context)
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{
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// Check whether the inner node is actually visible - if not, don't
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// trigger the callback function
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if (this.innerNode.is(":visible"))
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{
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// Initialize the height calculation
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this._initialize();
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// Get the outer container height and offset, if available
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const oh = this.outerNode.height();
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const ot = this.outerNode.offset() ? this.outerNode.offset().top : 0;
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// Get top and height of the inner node
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const it = this.innerNode.offset().top;
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// Calculate the height of the "bottomNodes"
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let bminTop = this.bottomNodes.length ? Infinity : 0;
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let bmaxBot = 0;
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for (let i = 0; i < this.bottomNodes.length; i++)
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{
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// Ignore hidden popups
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if(this.bottomNodes[i].find('.action_popup').length)
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{
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egw.debug('warn', "Had to skip a hidden popup - it should be removed",
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this.bottomNodes[i].find('.action_popup')
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);
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continue;
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}
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// Ignore other hidden nodes
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if(!this.bottomNodes[i].is(':visible')) continue;
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// Get height, top and bottom and calculate the maximum/minimum
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let bh = this.bottomNodes[i].outerHeight(true);
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let bt = this.bottomNodes[i].offset().top;
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const bb = bh + bt;
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if (i == 0 || bminTop > bt)
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{
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bminTop = bt;
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}
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if (i == 0 || bmaxBot < bb)
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{
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bmaxBot = bb;
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}
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}
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// Get the height of the bottom container
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const bh = Math.max(0, bmaxBot - bminTop);
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// Calculate the new height of the inner container
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const h = Math.max(this.minHeight, oh + ot - it - bh -
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this.innerMargin - this.outerMargin);
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this.innerNode.height(h);
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// Update the width
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// Some checking to make sure it doesn't overflow the width when user
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// resizes the window
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let w = this.outerNode.width();
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if (w > jQuery(window).width())
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{
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// 50px border, totally arbitrary, but we just need to make sure it's inside
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w = jQuery(window).width()-50;
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}
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if(w != this.innerNode.outerWidth())
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{
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this.innerNode.width(w);
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}
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// Call the callback function
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if (typeof _callback != "undefined")
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{
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_callback.call(_context, w, h);
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}
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}
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}
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/**
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* Function used internally which collects all DOM-Nodes which are located
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* below this element.
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*
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* @param {HTMLElement} _node
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* @param {number} _bottom
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*/
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_collectBottomNodes( _node : any, _bottom? : number)
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{
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// Calculate the bottom position of the inner node
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if (typeof _bottom == "undefined")
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{
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_bottom = this.innerNode.offset().top + this.innerNode.height();
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}
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if (_node)
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{
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// Accumulate the outer margin of the parent elements
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const node = jQuery(_node);
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const ooh = node.outerHeight(true);
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const oh = node.height();
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this.outerMargin += (ooh - oh) / 2; // Divide by 2 as the value contains margin-top and -bottom
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// Iterate over the children of the given node and do the same
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// recursively to the parent nodes until the _outerNode or body is
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// reached.
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const self = this;
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jQuery(_node).children().each(function() {
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const $this = jQuery(this);
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const top = $this.offset().top;
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if(this != self.innerNode[0] && top >= _bottom && ["fixed", "absolute"].indexOf(getComputedStyle(this).position) == -1)
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{
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self.bottomNodes.push($this);
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}
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});
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if (_node != this.outerNode[0] && _node != jQuery("body")[0])
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{
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this._collectBottomNodes(_node.parentNode, _bottom);
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}
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}
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}
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/**
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* Used internally to calculate some information which will not change over
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* the time.
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*/
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_initialize( )
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{
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if (!this.initialized)
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{
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// Collect all bottomNodes and calculates the outer margin
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this.bottomNodes = [];
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this.outerMargin = 0;
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this._collectBottomNodes(this.innerNode[0].parentNode);
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// Calculate the inner margin
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const ioh = this.innerNode.outerHeight(true);
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const ih = this.innerNode.height();
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this.innerMargin = ioh - ih;
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this.initialized = true;
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}
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}
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} |