wp/nwyj/.svn/pristine/0a/0ad2ee958e8aed076038e69eebe3ef0cf2b6cebc.svn-base

/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

// private
// Field objects are not intended to be created directly, but are created
// behind the scenes when defined for Record objects. See Record.js for details.
Ext.data.Field = function(config) {
	if (typeof config == "string") {
		config = {
			name : config
		};
	}
	Ext.apply(this, config);

	if (!this.type) {
		this.type = "auto";
	}

	var st = Ext.data.SortTypes;
	// named sortTypes are supported, here we look them up
	if (typeof this.sortType == "string") {
		this.sortType = st[this.sortType];
	}

	// set default sortType for strings and dates
	if (!this.sortType) {
		switch (this.type) {
			case "string" :
				this.sortType = st.asUCString;
				break;
			case "date" :
				this.sortType = st.asDate;
				break;
			default :
				this.sortType = st.none;
		}
	}

	// define once
	var stripRe = /[\$,%]/g;

	// prebuilt conversion function for this field, instead of
	// switching every time we're reading a value
	if (!this.convert) {
		var cv, dateFormat = this.dateFormat;
		switch (this.type) {
			case "" :
			case "auto" :
			case undefined :
				cv = function(v) {
					return v;
				};
				break;
			case "string" :
				cv = function(v) {
					return (v === undefined || v === null) ? '' : String(v);
				};
				break;
			case "int" :
				cv = function(v) {
					return v !== undefined && v !== null && v !== ''
							? parseInt(String(v).replace(stripRe, ""), 10)
							: '';
				};
				break;
			case "float" :
				cv = function(v) {
					return v !== undefined && v !== null && v !== ''
							? parseFloat(String(v).replace(stripRe, ""), 10)
							: '';
				};
				break;
			case "bool" :
			case "boolean" :
				cv = function(v) {
					return v === true || v === "true" || v == 1;
				};
				break;
			case "date" :
				cv = function(v) {
					if (!v) {
						return '';
					}
					if (v instanceof Date) {
						return v;
					}
					if (dateFormat) {
						if (dateFormat == "timestamp") {
							return new Date(v * 1000);
						}
						if (dateFormat == "time") {
							return new Date(parseInt(v, 10));
						}
						return Date.parseDate(v, dateFormat);
					}
					var parsed = Date.parse(v);
					return parsed ? new Date(parsed) : null;
				};
				break;

		}
		this.convert = cv;
	}
};

Ext.data.Field.prototype = {
	dateFormat : null,
	defaultValue : "",
	mapping : null,
	sortType : null,
	sortDir : "ASC"
};