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TiddlyWiki5/core/modules/widgets/fields.js

104 lines
2.6 KiB
JavaScript
Executable File

/*\
title: $:/core/modules/widgets/fields.js
type: application/javascript
module-type: widget
Fields widget
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var Widget = require("$:/core/modules/widgets/widget.js").widget;
var FieldsWidget = function(parseTreeNode,options) {
this.initialise(parseTreeNode,options);
};
/*
Inherit from the base widget class
*/
FieldsWidget.prototype = new Widget();
/*
Render this widget into the DOM
*/
FieldsWidget.prototype.render = function(parent,nextSibling) {
this.parentDomNode = parent;
this.computeAttributes();
this.execute();
var textNode = this.document.createTextNode(this.text);
parent.insertBefore(textNode,nextSibling);
this.domNodes.push(textNode);
};
/*
Compute the internal state of the widget
*/
FieldsWidget.prototype.execute = function() {
// Get parameters from our attributes
this.tiddlerTitle = this.getAttribute("tiddler",this.getVariable("currentTiddler"));
this.template = this.getAttribute("template");
this.exclude = this.getAttribute("exclude");
this.stripTitlePrefix = this.getAttribute("stripTitlePrefix","no") === "yes";
// Get the value to display
var tiddler = this.wiki.getTiddler(this.tiddlerTitle);
// Get the exclusion list
var exclude;
if(this.exclude) {
exclude = this.exclude.split(" ");
} else {
exclude = ["text"];
}
// Compose the template
var text = [];
if(this.template && tiddler) {
var fields = [];
for(var fieldName in tiddler.fields) {
if(exclude.indexOf(fieldName) === -1) {
fields.push(fieldName);
}
}
fields.sort();
for(var f=0; f<fields.length; f++) {
fieldName = fields[f];
if(exclude.indexOf(fieldName) === -1) {
var row = this.template,
value = tiddler.getFieldString(fieldName);
if(this.stripTitlePrefix && fieldName === "title") {
var reStrip = /^\{[^\}]+\}(.+)/mg,
reMatch = reStrip.exec(value);
if(reMatch) {
value = reMatch[1];
}
}
row = row.replace("$name$",fieldName);
row = row.replace("$value$",value);
row = row.replace("$encoded_value$",$tw.utils.htmlEncode(value));
text.push(row)
}
}
}
this.text = text.join("");
};
/*
Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
*/
FieldsWidget.prototype.refresh = function(changedTiddlers) {
var changedAttributes = this.computeAttributes();
if(changedAttributes.tiddler || changedAttributes.template || changedAttributes.exclude || changedAttributes.stripTitlePrefix || changedTiddlers[this.tiddlerTitle]) {
this.refreshSelf();
return true;
} else {
return false;
}
};
exports.fields = FieldsWidget;
})();