1
0
mirror of https://github.com/Jermolene/TiddlyWiki5 synced 2024-12-25 17:40:29 +00:00
TiddlyWiki5/core/modules/widgets/action-deletefield.js

85 lines
2.0 KiB
JavaScript

/*\
title: $:/core/modules/widgets/action-deletefield.js
type: application/javascript
module-type: widget
Action widget to delete fields of a tiddler.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var DeleteFieldWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
};
/*
Inherit from the base widget class
*/
DeleteFieldWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
DeleteFieldWidget.prototype.render = function(parent,nextSibling) {
this.computeAttributes();
this.execute();
};
/*
Compute the internal state of the widget
*/
DeleteFieldWidget.prototype.execute = function() {
this.actionTiddler = this.getAttribute("$tiddler",this.getVariable("currentTiddler"));
this.actionField = this.getAttribute("$field");
};
/*
Refresh the widget by ensuring our attributes are up to date
*/
DeleteFieldWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(changedAttributes["$tiddler"]) {
this.refreshSelf();
return true;
}
return this.refreshChildren(changedTiddlers);
};
/*
Invoke the action associated with this widget
*/
DeleteFieldWidget.prototype.invokeAction = function(triggeringWidget,event) {
var self = this,
tiddler = this.wiki.getTiddler(self.actionTiddler),
removeFields = {},
hasChanged = false;
if(this.actionField) {
removeFields[this.actionField] = undefined;
if(this.actionField in tiddler.fields) {
hasChanged = true;
}
}
if(tiddler) {
$tw.utils.each(this.attributes,function(attribute,name) {
if(name.charAt(0) !== "$" && name !== "title") {
removeFields[name] = undefined;
hasChanged = true;
}
});
if(hasChanged) {
this.wiki.addTiddler(new $tw.Tiddler(this.wiki.getCreationFields(),tiddler,removeFields,this.wiki.getModificationFields()));
}
}
return true; // Action was invoked
};
exports["action-deletefield"] = DeleteFieldWidget;
})();