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<title>The source code</title>
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<pre class="prettyprint lang-js">/**
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* @class Ext.Element
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*/
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Ext.Element.addMethods(
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function(){
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var VISIBILITY = "visibility",
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DISPLAY = "display",
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HIDDEN = "hidden",
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NONE = "none",
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XMASKED = "x-masked",
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XMASKEDRELATIVE = "x-masked-relative",
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data = Ext.Element.data;
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return {
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<div id="method-Ext.Element-isVisible"></div>/**
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* Checks whether the element is currently visible using both visibility and display properties.
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* @param {Boolean} deep (optional) True to walk the dom and see if parent elements are hidden (defaults to false)
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* @return {Boolean} True if the element is currently visible, else false
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*/
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isVisible : function(deep) {
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var vis = !this.isStyle(VISIBILITY,HIDDEN) && !this.isStyle(DISPLAY,NONE),
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p = this.dom.parentNode;
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if(deep !== true || !vis){
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return vis;
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}
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while(p && !/body/i.test(p.tagName)){
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if(!Ext.fly(p, '_isVisible').isVisible()){
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return false;
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}
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p = p.parentNode;
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}
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return true;
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},
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<div id="method-Ext.Element-isDisplayed"></div>/**
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* Returns true if display is not "none"
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* @return {Boolean}
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*/
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isDisplayed : function() {
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return !this.isStyle(DISPLAY, NONE);
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},
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<div id="method-Ext.Element-enableDisplayMode"></div>/**
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* Convenience method for setVisibilityMode(Element.DISPLAY)
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* @param {String} display (optional) What to set display to when visible
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* @return {Ext.Element} this
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*/
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enableDisplayMode : function(display){
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this.setVisibilityMode(Ext.Element.DISPLAY);
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if(!Ext.isEmpty(display)){
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data(this.dom, 'originalDisplay', display);
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}
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return this;
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},
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<div id="method-Ext.Element-mask"></div>/**
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* Puts a mask over this element to disable user interaction. Requires core.css.
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* This method can only be applied to elements which accept child nodes.
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* @param {String} msg (optional) A message to display in the mask
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* @param {String} msgCls (optional) A css class to apply to the msg element
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* @return {Element} The mask element
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*/
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mask : function(msg, msgCls){
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var me = this,
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dom = me.dom,
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dh = Ext.DomHelper,
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EXTELMASKMSG = "ext-el-mask-msg",
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el,
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mask;
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if(me.getStyle("position") == "static"){
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me.addClass(XMASKEDRELATIVE);
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}
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if((el = data(dom, 'maskMsg'))){
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el.remove();
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}
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if((el = data(dom, 'mask'))){
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el.remove();
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}
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mask = dh.append(dom, {cls : "ext-el-mask"}, true);
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data(dom, 'mask', mask);
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me.addClass(XMASKED);
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mask.setDisplayed(true);
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if(typeof msg == 'string'){
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var mm = dh.append(dom, {cls : EXTELMASKMSG, cn:{tag:'div'}}, true);
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data(dom, 'maskMsg', mm);
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mm.dom.className = msgCls ? EXTELMASKMSG + " " + msgCls : EXTELMASKMSG;
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mm.dom.firstChild.innerHTML = msg;
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mm.setDisplayed(true);
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mm.center(me);
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}
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if(Ext.isIE && !(Ext.isIE7 && Ext.isStrict) && me.getStyle('height') == 'auto'){ // ie will not expand full height automatically
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mask.setSize(undefined, me.getHeight());
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}
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return mask;
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},
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<div id="method-Ext.Element-unmask"></div>/**
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* Removes a previously applied mask.
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*/
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unmask : function(){
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var me = this,
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dom = me.dom,
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mask = data(dom, 'mask'),
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maskMsg = data(dom, 'maskMsg');
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if(mask){
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if(maskMsg){
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maskMsg.remove();
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data(dom, 'maskMsg', undefined);
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}
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mask.remove();
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data(dom, 'mask', undefined);
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}
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me.removeClass([XMASKED, XMASKEDRELATIVE]);
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},
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<div id="method-Ext.Element-isMasked"></div>/**
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* Returns true if this element is masked
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* @return {Boolean}
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*/
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isMasked : function(){
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var m = data(this.dom, 'mask');
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return m && m.isVisible();
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},
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<div id="method-Ext.Element-createShim"></div>/**
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* Creates an iframe shim for this element to keep selects and other windowed objects from
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* showing through.
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* @return {Ext.Element} The new shim element
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*/
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createShim : function(){
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var el = document.createElement('iframe'),
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shim;
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el.frameBorder = '0';
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el.className = 'ext-shim';
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el.src = Ext.SSL_SECURE_URL;
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shim = Ext.get(this.dom.parentNode.insertBefore(el, this.dom));
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shim.autoBoxAdjust = false;
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return shim;
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}
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};
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}());</pre>
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