mediawiki-extensions-Visual.../modules/ve/dm/models/ve.dm.MWTemplateSpecModel.js

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/*!
* VisualEditor DataModel MWTemplateSpecModel class.
*
* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/*global mw */
/**
* MediaWiki template specification.
*
* @class
*
* @constructor
* @param {ve.dm.MWTemplateModel} template Template
*/
ve.dm.MWTemplateSpecModel = function VeDmMWTemplateSpecModel( template ) {
// Properties
this.template = template;
this.description = null;
this.params = {};
this.sets = [];
// Initialization
this.fill();
};
/* Static Methods */
/**
* Get the correct value from a message property.
*
* @method
* @static
* @param {string|Object|undefined} val Messsage or object with messages keyed by language
* @param {Mixed} [fallback=null] Value to use if message is not available
* @param {string} [lang] Language to prefer, user interface language will be used by default
* @returns {string} Message text or fallback if not available
*/
ve.dm.MWTemplateSpecModel.getMessage = function ( val, fallback, lang ) {
if ( lang === undefined ) {
lang = ve.init.platform.getUserLanguage();
}
if ( fallback === undefined ) {
fallback = null;
}
if ( ve.isPlainObject( val ) ) {
return val[lang] || fallback;
}
return typeof val === 'string' ? val : fallback;
};
/* Methods */
/**
* Extend with template spec data.
*
* Template spec data is available from the TemplateData extension's API. Extension is passive so
* any filled in values are not overwritten unless new values are available. This prevents changes
* in the API or fill methods from causing issues.
*
* @method
* @param {Object} data Template spec data
* @param {string} [data.description] Template description
* @param {Object} [data.params] Template param specs keyed by param name
* @param {string[][]} [data.sets] Lists of param sets
*/
ve.dm.MWTemplateSpecModel.prototype.extend = function ( data ) {
var key, paramObj, i, len;
if ( data.description !== null ) {
this.description = data.description;
}
if ( ve.isPlainObject( data.params ) ) {
for ( key in data.params ) {
paramObj = data.params[key];
this.params[key] = ve.extendObject(
true,
this.getDefaultParameterSpec( key ),
paramObj
);
if ( paramObj.aliases.length ) {
for ( i = 0, len = paramObj.aliases.length; i < len; i++ ) {
this.params[ paramObj.aliases[i] ] = paramObj;
}
}
delete paramObj.aliases;
}
}
if ( data.sets ) {
this.sets = data.sets;
}
};
/**
* Fill from template.
*
* Filling is passive, so existing information is never overwitten. The spec should be re-filled
* after a parameter is added to ensure it's still complete, and this is safe because existing data
* is never overwritten.
*
* @method
*/
ve.dm.MWTemplateSpecModel.prototype.fill = function () {
var key;
for ( key in this.template.getParameters() ) {
if ( !this.params[key] ) {
this.params[key] = this.getDefaultParameterSpec( key );
}
}
};
/**
* Get the default spec for a parameter.
*
* @method
* @param {string} name Parameter name
* @returns {Object} Parameter spec
*/
ve.dm.MWTemplateSpecModel.prototype.getDefaultParameterSpec = function ( name ) {
return {
'label': { 'en': name },
'description': null,
'default': '',
'type': 'string',
'aliases': [],
'required': false,
'deprecated': false
};
};
/**
* Get template label.
*
* @method
* @returns {string} Template label
*/
ve.dm.MWTemplateSpecModel.prototype.getLabel = function () {
var titleObj,
title = this.template.getTitle(),
target = this.template.getTarget();
if ( title ) {
try {
// Normalize and remove namespace prefix if in the Template: namespace
titleObj = new mw.Title( title );
if ( titleObj.getNamespaceId() === 10 ) {
// Template namespace, remove namespace prefix
title = titleObj.getNameText();
} else {
// Other namespace, already has a prefix
title = titleObj.getPrefixedText();
}
} catch ( e ) { }
}
return title || target.wt;
};
/**
* Get template description.
*
* @method
* @returns {string|null} Template description or null if not available
*/
ve.dm.MWTemplateSpecModel.prototype.getDescription = function () {
return this.constructor.getMessage( this.description, null );
};
/**
* Get a parameter label.
*
* @method
* @param {string} name Parameter name
* @returns {string} Parameter label
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterLabel = function ( name ) {
return this.constructor.getMessage( this.params[name].label, name );
};
/**
* Get a parameter description.
*
* @method
* @param {string} name Parameter name
* @returns {string} Parameter description
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterDescription = function ( name ) {
return this.constructor.getMessage( this.params[name].description, null );
};
/**
* Get a parameter value.
*
* @method
* @param {string} name Parameter name
* @returns {string} Default parameter value
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterDefaultValue = function ( name ) {
return this.params[name]['default'];
};
/**
* Get a parameter type.
*
* @method
* @param {string} name Parameter name
* @returns {string} Parameter type
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterType = function ( name ) {
return this.params[name].type;
};
/**
* Get parameter aliases.
*
* @method
* @param {string} name Parameter name
* @returns {string[]} Alternate parameter names
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterAliases = function ( name ) {
return this.params[name].aliases;
};
/**
* Check if parameter is required.
*
* @method
* @param {string} name Parameter name
* @returns {boolean} Parameter is required
*/
ve.dm.MWTemplateSpecModel.prototype.isParameterRequired = function ( name ) {
return !!this.params[name].required;
};
/**
* Check if parameter is deprecated.
*
* @method
* @param {string} name Parameter name
* @returns {boolean} Parameter is deprecated
*/
ve.dm.MWTemplateSpecModel.prototype.isParameterDeprecated = function ( name ) {
return this.params[name].deprecated;
};
/**
* Get all parameter specifications.
*
* @method
* @returns {string[]} Parameter names
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterNames = function () {
return ve.getObjectKeys( this.params );
};
/**
* Get parameter sets.
*
* @method
* @returns {string[][]} Lists of parameter sets
*/
ve.dm.MWTemplateSpecModel.prototype.getParameterSets = function () {
return this.sets;
};