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Code Issues Releases Wiki Activity

Add a fieldmangler widget

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This commit is contained in:
Jeremy Ruston 2013-10-21 22:54:58 +01:00
parent 06af26b1c8
commit 7393a296dd
1 changed files with 110 additions and 0 deletions
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core/modules/new_widgets/fieldmangler.js Normal file
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/*\
title: $:/core/modules/new_widgets/fieldmangler.js
type: application/javascript
module-type: new_widget
Field mangler widget
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/new_widgets/widget.js").widget;
var FieldManglerWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
this.addEventListeners([
{type: "tw-remove-field", handler: "handleRemoveFieldEvent"},
{type: "tw-add-field", handler: "handleAddFieldEvent"},
{type: "tw-remove-tag", handler: "handleRemoveTagEvent"},
{type: "tw-add-tag", handler: "handleAddTagEvent"}
]);
};
/*
Inherit from the base widget class
*/
FieldManglerWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
FieldManglerWidget.prototype.render = function(parent,nextSibling) {
this.parentDomNode = parent;
this.computeAttributes();
this.execute();
this.renderChildren(parent,nextSibling);
};
/*
Compute the internal state of the widget
*/
FieldManglerWidget.prototype.execute = function() {
// Get our parameters
this.mangleTitle = this.getAttribute("title",this.getVariable("tiddlerTitle"));
// Construct the child widgets
this.makeChildWidgets();
};
/*
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
*/
FieldManglerWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(changedAttributes.tiddler) {
this.refreshSelf();
return true;
} else {
return this.refreshChildren(changedTiddlers);
}
};
FieldManglerWidget.prototype.handleRemoveFieldEvent = function(event) {
var tiddler = this.wiki.getTiddler(this.mangleTitle),
deletion = {};
deletion[event.param] = undefined;
this.wiki.addTiddler(new $tw.Tiddler(tiddler,deletion));
return true;
};
FieldManglerWidget.prototype.handleAddFieldEvent = function(event) {
var tiddler = this.wiki.getTiddler(this.mangleTitle);
if(tiddler && typeof event.param === "string" && event.param !== "" && !$tw.utils.hop(tiddler.fields,event.param)) {
var addition = {};
addition[event.param] = "";
this.wiki.addTiddler(new $tw.Tiddler(tiddler,addition));
}
return true;
};
FieldManglerWidget.prototype.handleRemoveTagEvent = function(event) {
var tiddler = this.wiki.getTiddler(this.mangleTitle);
if(tiddler && tiddler.fields.tags) {
var p = tiddler.fields.tags.indexOf(event.param);
if(p !== -1) {
var modification = {};
modification.tags = (tiddler.fields.tags || []).slice(0);
modification.tags.splice(p,1);
this.wiki.addTiddler(new $tw.Tiddler(tiddler,modification));
}
}
return true;
};
FieldManglerWidget.prototype.handleAddTagEvent = function(event) {
var tiddler = this.wiki.getTiddler(this.mangleTitle);
if(tiddler && typeof event.param === "string" && event.param !== "") {
var modification = {};
modification.tags = (tiddler.fields.tags || []).slice(0);
$tw.utils.pushTop(modification.tags,event.param);
this.wiki.addTiddler(new $tw.Tiddler(tiddler,modification));
}
return true;
};
exports.fieldmangler = FieldManglerWidget;
})();