TiddlyWiki5/core/modules/tiddler.js

57 wiersze
1.4 KiB
JavaScript

/*\
title: $:/core/modules/tiddler.js
type: application/javascript
module-type: tiddlermethod
Extension methods for the $tw.Tiddler object (constructor and methods required at boot time are in boot/boot.js)
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
exports.hasTag = function(tag) {
return this.fields.tags && this.fields.tags.indexOf(tag) !== -1;
};
exports.isPlugin = function() {
return this.fields.type === "application/json" && this.hasField("plugin") && this.hasField("plugin-type");
}
exports.getFieldString = function(field) {
var value = this.fields[field];
// Check for a missing field
if(value === undefined || value === null) {
return "";
}
// Parse the field with the associated module (if any)
var fieldModule = $tw.Tiddler.fieldModules[field];
if(fieldModule) {
return fieldModule.stringify.call(this,value);
} else {
return value.toString();
}
};
/*
Get all the fields as a name:value block. Options:
exclude: an array of field names to exclude
*/
exports.getFieldStringBlock = function(options) {
options = options || {};
var exclude = options.exclude || [];
var fields = [];
for(var field in this.fields) {
if($tw.utils.hop(this.fields,field)) {
if(exclude.indexOf(field) === -1) {
fields.push(field + ": " + this.getFieldString(field));
}
}
}
return fields.join("\n");
};
})();