/**
* Wrapper for VML element. * @constructor * @extends jvm.AbstractElement * @param {String} name Tag name of the element * @param {Object} config Set of parameters to initialize element with */
jvm.VMLElement = function(name, config){
if (!jvm.VMLElement.VMLInitialized) { jvm.VMLElement.initializeVML(); } jvm.VMLElement.parentClass.apply(this, arguments);
};
jvm.inherits(jvm.VMLElement, jvm.AbstractElement);
/**
* Shows if VML was already initialized for the current document or not. * @static * @private * @type {Boolean} */
jvm.VMLElement.VMLInitialized = false;
/**
* Initializes VML handling before creating the first element * (adds CSS class and creates namespace). Adds one of two forms * of createElement method depending of support by browser. * @static * @private */ // The following method of VML handling is borrowed from the // Raphael library by Dmitry Baranovsky.
jvm.VMLElement.initializeVML = function(){
try { if (!document.namespaces.rvml) { document.namespaces.add("rvml","urn:schemas-microsoft-com:vml"); } /** * Creates DOM element. * @param {String} tagName Name of element * @private * @returns DOMElement */ jvm.VMLElement.prototype.createElement = function (tagName) { return document.createElement('<rvml:' + tagName + ' class="rvml">'); }; } catch (e) { /** * @private */ jvm.VMLElement.prototype.createElement = function (tagName) { return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">'); }; } document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)"); jvm.VMLElement.VMLInitialized = true;
};
/**
* Returns constructor for element by name prefixed with 'VML'. * @param {String} ctr Name of basic constructor to return * proper implementation for. * @returns Function * @private */
jvm.VMLElement.prototype.getElementCtr = function( ctr ){
return jvm['VML'+ctr];
};
/**
* Adds CSS class for underlying DOM element. * @param {String} className Name of CSS class name */
jvm.VMLElement.prototype.addClass = function( className ){
jvm.$(this.node).addClass(className);
};
/**
* Applies attribute value to the underlying DOM element. * @param {String} name Name of attribute * @param {Number|String} config Value of attribute to apply * @private */
jvm.VMLElement.prototype.applyAttr = function( attr, value ){
this.node[attr] = value;
};
/**
* Returns boundary box for the element. * @returns {Object} Boundary box with numeric fields: x, y, width, height * @override */
jvm.VMLElement.prototype.getBBox = function(){
var node = jvm.$(this.node); return { x: node.position().left / this.canvas.scale, y: node.position().top / this.canvas.scale, width: node.width() / this.canvas.scale, height: node.height() / this.canvas.scale };
};