TiddlyWiki5/core/modules/widgets/action-listops.js

97 wiersze
2.9 KiB
JavaScript

/*\
title: $:/core/modules/widgets/action-listops.js
type: application/javascript
module-type: widget
Action widget to apply list operations to any tiddler field (defaults to the 'list' field of the current tiddler)
\*/
(function() {
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var ActionListopsWidget = function(parseTreeNode, options) {
this.initialise(parseTreeNode, options);
};
/**
* Inherit from the base widget class
*/
ActionListopsWidget.prototype = new Widget();
/**
* Render this widget into the DOM
*/
ActionListopsWidget.prototype.render = function(parent, nextSibling) {
this.computeAttributes();
this.execute();
};
/**
* Compute the internal state of the widget
*/
ActionListopsWidget.prototype.execute = function() {
// Get our parameters
this.target = this.getAttribute("$tiddler", this.getVariable(
"currentTiddler"));
this.filter = this.getAttribute("$filter");
this.subfilter = this.getAttribute("$subfilter");
this.listField = this.getAttribute("$field", "list");
this.listIndex = this.getAttribute("$index");
this.filtertags = this.getAttribute("$tags");
};
/**
* Refresh the widget by ensuring our attributes are up to date
*/
ActionListopsWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(changedAttributes.$tiddler || changedAttributes.$filter ||
changedAttributes.$subfilter || changedAttributes.$field ||
changedAttributes.$index || changedAttributes.$tags) {
this.refreshSelf();
return true;
}
return this.refreshChildren(changedTiddlers);
};
/**
* Invoke the action associated with this widget
*/
ActionListopsWidget.prototype.invokeAction = function(triggeringWidget,
event) {
//Apply the specified filters to the lists
var field = this.listField,
index,
type = "!!",
list = this.listField;
if(this.listIndex) {
field = undefined;
index = this.listIndex;
type = "##";
list = this.listIndex;
}
if(this.filter) {
this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(
this.wiki
.filterTiddlers(this.filter, this)));
}
if(this.subfilter) {
var subfilter = "[list[" + this.target + type + list + "]] " + this.subfilter;
this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(
this.wiki
.filterTiddlers(subfilter, this)));
}
if(this.filtertags) {
var tiddler = this.wiki.getTiddler(this.target),
oldtags = tiddler ? (tiddler.fields.tags || []).slice(0) : [],
tagfilter = "[list[" + this.target + "!!tags]] " + this.filtertags,
newtags = this.wiki.filterTiddlers(tagfilter,this);
if($tw.utils.stringifyList(oldtags.sort()) !== $tw.utils.stringifyList(newtags.sort())) {
this.wiki.setText(this.target,"tags",undefined,$tw.utils.stringifyList(newtags));
}
}
return true; // Action was invoked
};
exports["action-listops"] = ActionListopsWidget;
})();