mirror of
https://github.com/Jermolene/TiddlyWiki5
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76 lines
1.9 KiB
JavaScript
76 lines
1.9 KiB
JavaScript
/*\
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title: $:/core/modules/macros/view/viewers/relativedate.js
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type: application/javascript
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module-type: fieldviewer
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A viewer for viewing tiddler fields as a relative date
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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var RelativeDateViewer = function(viewMacro,tiddler,field,value) {
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this.viewMacro = viewMacro;
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this.tiddler = tiddler;
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this.field = field;
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this.value = value;
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};
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RelativeDateViewer.prototype.render = function() {
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if(!this.tiddler ||this.value === undefined) {
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return $tw.Tree.Text("");
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} else {
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this.relativeDate = $tw.utils.getRelativeDate((new Date()) - this.value);
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return $tw.Tree.Element(this.viewMacro.isBlock ? "div" : "span",{},[
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$tw.Tree.Text(
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this.relativeDate.description
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)
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]);
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}
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};
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/*
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Trigger the timer when the relative date is put into the DOM
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*/
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RelativeDateViewer.prototype.postRenderInDom = function() {
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if(this.relativeDate) {
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this.update();
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}
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};
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/*
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Trigger the timer for the next update of the relative date
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*/
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RelativeDateViewer.prototype.setTimer = function() {
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var self = this;
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if(this.relativeDate.updatePeriod < 24 * 60 * 60 * 1000) {
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window.setTimeout(function() {
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// Only call the update function if the dom node is still in the document
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if($tw.utils.domContains(document,self.viewMacro.child.domNode)) {
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self.update.call(self);
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}
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},this.relativeDate.updatePeriod);
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}
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};
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/*
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Update the relative date display, and trigger the timer for the next update
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*/
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RelativeDateViewer.prototype.update = function() {
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this.relativeDate = $tw.utils.getRelativeDate((new Date()) - this.value);
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if(this.relativeDate.delta > 0) {
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while(this.viewMacro.child.domNode.hasChildNodes()) {
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this.viewMacro.child.domNode.removeChild(this.viewMacro.child.domNode.firstChild);
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}
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this.viewMacro.child.domNode.appendChild(document.createTextNode(this.relativeDate.description));
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this.setTimer();
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}
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};
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exports.relativedate = RelativeDateViewer;
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})();
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