74 lines
1.7 KiB
JavaScript
Executable File
74 lines
1.7 KiB
JavaScript
Executable File
/*\
|
|
title: $:/core/modules/new_widgets/element.js
|
|
type: application/javascript
|
|
module-type: new_widget
|
|
|
|
Element widget
|
|
|
|
\*/
|
|
(function(){
|
|
|
|
/*jslint node: true, browser: true */
|
|
/*global $tw: false */
|
|
"use strict";
|
|
|
|
var Widget = require("$:/core/modules/new_widgets/widget.js").widget;
|
|
|
|
var ElementWidget = function(parseTreeNode,options) {
|
|
this.initialise(parseTreeNode,options);
|
|
};
|
|
|
|
/*
|
|
Inherit from the base widget class
|
|
*/
|
|
ElementWidget.prototype = new Widget();
|
|
|
|
/*
|
|
Render this widget into the DOM
|
|
*/
|
|
ElementWidget.prototype.render = function(parent,nextSibling) {
|
|
this.parentDomNode = parent;
|
|
this.computeAttributes();
|
|
this.execute();
|
|
var domNode = this.document.createElement(this.parseTreeNode.tag);
|
|
this.assignAttributes(domNode);
|
|
parent.insertBefore(domNode,nextSibling);
|
|
this.renderChildren(domNode,null);
|
|
this.domNodes.push(domNode);
|
|
};
|
|
|
|
/*
|
|
Compute the internal state of the widget
|
|
*/
|
|
ElementWidget.prototype.execute = function() {
|
|
this.makeChildWidgets();
|
|
};
|
|
|
|
/*
|
|
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
|
|
*/
|
|
ElementWidget.prototype.refresh = function(changedTiddlers) {
|
|
var changedAttributes = this.computeAttributes(),
|
|
hasChangedAttributes = $tw.utils.count(changedAttributes) > 0;
|
|
if(hasChangedAttributes) {
|
|
// Update our attributes
|
|
this.assignAttributes(this.domNodes[0]);
|
|
}
|
|
var hasRefreshed = this.refreshChildren(changedTiddlers);
|
|
return hasRefreshed || hasChangedAttributes;
|
|
};
|
|
|
|
/*
|
|
Remove any DOM nodes created by this widget or its children
|
|
*/
|
|
ElementWidget.prototype.removeChildDomNodes = function() {
|
|
$tw.utils.each(this.domNodes,function(domNode) {
|
|
domNode.parentNode.removeChild(domNode);
|
|
});
|
|
this.domNodes = [];
|
|
};
|
|
|
|
exports.element = ElementWidget;
|
|
|
|
})();
|