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+ <pre class="prettyprint lang-js"><span id='Ext-Element'>/**
+</span> * @class Ext.Element
+ */
+Ext.Element.addMethods(
+ function() {
+ var VISIBILITY = "visibility",
+ DISPLAY = "display",
+ HIDDEN = "hidden",
+ NONE = "none",
+ XMASKED = Ext.baseCSSPrefix + "masked",
+ XMASKEDRELATIVE = Ext.baseCSSPrefix + "masked-relative",
+ data = Ext.Element.data;
+
+ return {
+<span id='Ext-Element-method-isVisible'> /**
+</span> * Checks whether the element is currently visible using both visibility and display properties.
+ * @param {Boolean} [deep=false] True to walk the dom and see if parent elements are hidden
+ * @return {Boolean} True if the element is currently visible, else false
+ */
+ isVisible : function(deep) {
+ var vis = !this.isStyle(VISIBILITY, HIDDEN) && !this.isStyle(DISPLAY, NONE),
+ p = this.dom.parentNode;
+
+ if (deep !== true || !vis) {
+ return vis;
+ }
+
+ while (p && !(/^body/i.test(p.tagName))) {
+ if (!Ext.fly(p, '_isVisible').isVisible()) {
+ return false;
+ }
+ p = p.parentNode;
+ }
+ return true;
+ },
+
+<span id='Ext-Element-method-isDisplayed'> /**
+</span> * Returns true if display is not "none"
+ * @return {Boolean}
+ */
+ isDisplayed : function() {
+ return !this.isStyle(DISPLAY, NONE);
+ },
+
+<span id='Ext-Element-method-enableDisplayMode'> /**
+</span> * Convenience method for setVisibilityMode(Element.DISPLAY)
+ * @param {String} display (optional) What to set display to when visible
+ * @return {Ext.Element} this
+ */
+ enableDisplayMode : function(display) {
+ this.setVisibilityMode(Ext.Element.DISPLAY);
+
+ if (!Ext.isEmpty(display)) {
+ data(this.dom, 'originalDisplay', display);
+ }
+
+ return this;
+ },
+
+<span id='Ext-Element-method-mask'> /**
+</span> * Puts a mask over this element to disable user interaction. Requires core.css.
+ * This method can only be applied to elements which accept child nodes.
+ * @param {String} msg (optional) A message to display in the mask
+ * @param {String} msgCls (optional) A css class to apply to the msg element
+ * @return {Ext.Element} The mask element
+ */
+ mask : function(msg, msgCls) {
+ var me = this,
+ dom = me.dom,
+ setExpression = dom.style.setExpression,
+ dh = Ext.DomHelper,
+ EXTELMASKMSG = Ext.baseCSSPrefix + "mask-msg",
+ el,
+ mask;
+
+ if (!(/^body/i.test(dom.tagName) && me.getStyle('position') == 'static')) {
+ me.addCls(XMASKEDRELATIVE);
+ }
+ el = data(dom, 'maskMsg');
+ if (el) {
+ el.remove();
+ }
+ el = data(dom, 'mask');
+ if (el) {
+ el.remove();
+ }
+
+ mask = dh.append(dom, {cls : Ext.baseCSSPrefix + "mask"}, true);
+ data(dom, 'mask', mask);
+
+ me.addCls(XMASKED);
+ mask.setDisplayed(true);
+
+ if (typeof msg == 'string') {
+ var mm = dh.append(dom, {cls : EXTELMASKMSG, cn:{tag:'div'}}, true);
+ data(dom, 'maskMsg', mm);
+ mm.dom.className = msgCls ? EXTELMASKMSG + " " + msgCls : EXTELMASKMSG;
+ mm.dom.firstChild.innerHTML = msg;
+ mm.setDisplayed(true);
+ mm.center(me);
+ }
+ // NOTE: CSS expressions are resource intensive and to be used only as a last resort
+ // These expressions are removed as soon as they are no longer necessary - in the unmask method.
+ // In normal use cases an element will be masked for a limited period of time.
+ // Fix for https://sencha.jira.com/browse/EXTJSIV-19.
+ // IE6 strict mode and IE6-9 quirks mode takes off left+right padding when calculating width!
+ if (!Ext.supports.IncludePaddingInWidthCalculation && setExpression) {
+ mask.dom.style.setExpression('width', 'this.parentNode.offsetWidth + "px"');
+ }
+
+ // Some versions and modes of IE subtract top+bottom padding when calculating height.
+ // Different versions from those which make the same error for width!
+ if (!Ext.supports.IncludePaddingInHeightCalculation && setExpression) {
+ mask.dom.style.setExpression('height', 'this.parentNode.offsetHeight + "px"');
+ }
+ // ie will not expand full height automatically
+ else if (Ext.isIE && !(Ext.isIE7 && Ext.isStrict) && me.getStyle('height') == 'auto') {
+ mask.setSize(undefined, me.getHeight());
+ }
+ return mask;
+ },
+
+<span id='Ext-Element-method-unmask'> /**
+</span> * Removes a previously applied mask.
+ */
+ unmask : function() {
+ var me = this,
+ dom = me.dom,
+ mask = data(dom, 'mask'),
+ maskMsg = data(dom, 'maskMsg');
+
+ if (mask) {
+ // Remove resource-intensive CSS expressions as soon as they are not required.
+ if (mask.dom.style.clearExpression) {
+ mask.dom.style.clearExpression('width');
+ mask.dom.style.clearExpression('height');
+ }
+ if (maskMsg) {
+ maskMsg.remove();
+ data(dom, 'maskMsg', undefined);
+ }
+
+ mask.remove();
+ data(dom, 'mask', undefined);
+ me.removeCls([XMASKED, XMASKEDRELATIVE]);
+ }
+ },
+<span id='Ext-Element-method-isMasked'> /**
+</span> * Returns true if this element is masked. Also re-centers any displayed message within the mask.
+ * @return {Boolean}
+ */
+ isMasked : function() {
+ var me = this,
+ mask = data(me.dom, 'mask'),
+ maskMsg = data(me.dom, 'maskMsg');
+
+ if (mask && mask.isVisible()) {
+ if (maskMsg) {
+ maskMsg.center(me);
+ }
+ return true;
+ }
+ return false;
+ },
+
+<span id='Ext-Element-method-createShim'> /**
+</span> * Creates an iframe shim for this element to keep selects and other windowed objects from
+ * showing through.
+ * @return {Ext.Element} The new shim element
+ */
+ createShim : function() {
+ var el = document.createElement('iframe'),
+ shim;
+
+ el.frameBorder = '0';
+ el.className = Ext.baseCSSPrefix + 'shim';
+ el.src = Ext.SSL_SECURE_URL;
+ shim = Ext.get(this.dom.parentNode.insertBefore(el, this.dom));
+ shim.autoBoxAdjust = false;
+ return shim;
+ }
+ };
+ }()
+);</pre>
+</body>
+</html>
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