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<title>The source code</title>
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<pre class="prettyprint lang-js">/**
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Ext.Element.addMethods(function(){
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// local style camelizing for speed
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camelRe = /(-[a-z])/gi,
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view = document.defaultView,
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propFloat = Ext.isIE ? 'styleFloat' : 'cssFloat',
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opacityRe = /alpha\(opacity=(.*)\)/i,
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trimRe = /^\s+|\s+$/g,
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ISCLIPPED = 'isClipped',
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OVERFLOW = 'overflow',
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OVERFLOWX = 'overflow-x',
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OVERFLOWY = 'overflow-y',
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ORIGINALCLIP = 'originalClip',
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// special markup used throughout Ext when box wrapping elements
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borders = {l: BORDER + LEFT + WIDTH, r: BORDER + RIGHT + WIDTH, t: BORDER + TOP + WIDTH, b: BORDER + BOTTOM + WIDTH},
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paddings = {l: PADDING + LEFT, r: PADDING + RIGHT, t: PADDING + TOP, b: PADDING + BOTTOM},
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margins = {l: MARGIN + LEFT, r: MARGIN + RIGHT, t: MARGIN + TOP, b: MARGIN + BOTTOM},
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data = Ext.Element.data;
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function camelFn(m, a) {
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return a.charAt(1).toUpperCase();
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// private (needs to be called => addStyles.call(this, sides, styles))
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function addStyles(sides, styles){
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Ext.each(sides.match(/\w/g), function(s) {
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if (s = parseInt(this.getStyle(styles[s]), 10)) {
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function chkCache(prop) {
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return propCache[prop] || (propCache[prop] = prop == 'float' ? propFloat : prop.replace(camelRe, camelFn));
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// private ==> used by Fx
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adjustWidth : function(width) {
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var isNum = (typeof width == "number");
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if(isNum && me.autoBoxAdjust && !me.isBorderBox()){
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width -= (me.getBorderWidth("lr") + me.getPadding("lr"));
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return (isNum && width < 0) ? 0 : width;
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// private ==> used by Fx
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adjustHeight : function(height) {
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var isNum = (typeof height == "number");
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if(isNum && me.autoBoxAdjust && !me.isBorderBox()){
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height -= (me.getBorderWidth("tb") + me.getPadding("tb"));
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return (isNum && height < 0) ? 0 : height;
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<div id="method-Ext.Element-addClass"></div>/**
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* Adds one or more CSS classes to the element. Duplicate classes are automatically filtered out.
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* @param {String/Array} className The CSS class to add, or an array of classes
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* @return {Ext.Element} this
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addClass : function(className){
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Ext.each(className, function(v) {
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me.dom.className += (!me.hasClass(v) && v ? " " + v : "");
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<div id="method-Ext.Element-radioClass"></div>/**
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* Adds one or more CSS classes to this element and removes the same class(es) from all siblings.
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* @param {String/Array} className The CSS class to add, or an array of classes
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* @return {Ext.Element} this
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radioClass : function(className){
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Ext.each(this.dom.parentNode.childNodes, function(v) {
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if(v.nodeType == 1) {
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Ext.fly(v, '_internal').removeClass(className);
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return this.addClass(className);
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<div id="method-Ext.Element-removeClass"></div>/**
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* Removes one or more CSS classes from the element.
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* @param {String/Array} className The CSS class to remove, or an array of classes
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* @return {Ext.Element} this
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removeClass : function(className){
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if (me.dom.className) {
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Ext.each(className, function(v) {
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me.dom.className = me.dom.className.replace(
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classReCache[v] = classReCache[v] || new RegExp('(?:^|\\s+)' + v + '(?:\\s+|$)', "g"),
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<div id="method-Ext.Element-toggleClass"></div>/**
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* Toggles the specified CSS class on this element (removes it if it already exists, otherwise adds it).
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* @param {String} className The CSS class to toggle
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* @return {Ext.Element} this
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toggleClass : function(className){
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return this.hasClass(className) ? this.removeClass(className) : this.addClass(className);
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<div id="method-Ext.Element-hasClass"></div>/**
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* Checks if the specified CSS class exists on this element's DOM node.
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* @param {String} className The CSS class to check for
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* @return {Boolean} True if the class exists, else false
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hasClass : function(className){
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return className && (' '+this.dom.className+' ').indexOf(' '+className+' ') != -1;
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<div id="method-Ext.Element-replaceClass"></div>/**
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* Replaces a CSS class on the element with another. If the old name does not exist, the new name will simply be added.
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* @param {String} oldClassName The CSS class to replace
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* @param {String} newClassName The replacement CSS class
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* @return {Ext.Element} this
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replaceClass : function(oldClassName, newClassName){
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return this.removeClass(oldClassName).addClass(newClassName);
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isStyle : function(style, val) {
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return this.getStyle(style) == val;
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<div id="method-Ext.Element-getStyle"></div>/**
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* Normalizes currentStyle and computedStyle.
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* @param {String} property The style property whose value is returned.
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* @return {String} The current value of the style property for this element.
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getStyle : function(){
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return view && view.getComputedStyle ?
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if(el == document) return null;
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prop = chkCache(prop);
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return (v = el.style[prop]) ? v :
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(cs = view.getComputedStyle(el, "")) ? cs[prop] : null;
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if(el == document) return null;
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if (prop == 'opacity') {
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if (el.style.filter.match) {
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if(m = el.style.filter.match(opacityRe)){
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var fv = parseFloat(m[1]);
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return fv ? fv / 100 : 0;
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prop = chkCache(prop);
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return el.style[prop] || ((cs = el.currentStyle) ? cs[prop] : null);
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<div id="method-Ext.Element-getColor"></div>/**
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* Return the CSS color for the specified CSS attribute. rgb, 3 digit (like #fff) and valid values
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* are convert to standard 6 digit hex color.
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* @param {String} attr The css attribute
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* @param {String} defaultValue The default value to use when a valid color isn't found
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* @param {String} prefix (optional) defaults to #. Use an empty string when working with
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getColor : function(attr, defaultValue, prefix){
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var v = this.getStyle(attr),
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color = prefix || '#',
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if(!v || /transparent|inherit/.test(v)){
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Ext.each(v.slice(4, v.length -1).split(','), function(s){
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color += (h < 16 ? '0' : '') + h.toString(16);
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v = v.replace('#', '');
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color += v.length == 3 ? v.replace(/^(\w)(\w)(\w)$/, '$1$1$2$2$3$3') : v;
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return(color.length > 5 ? color.toLowerCase() : defaultValue);
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<div id="method-Ext.Element-setStyle"></div>/**
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* Wrapper for setting style properties, also takes single object parameter of multiple styles.
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* @param {String/Object} property The style property to be set, or an object of multiple styles.
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* @param {String} value (optional) The value to apply to the given property, or null if an object was passed.
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* @return {Ext.Element} this
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setStyle : function(prop, value){
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if (!Ext.isObject(prop)) {
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for (style in prop) {
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this.setOpacity(value) :
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this.dom.style[chkCache(style)] = value;
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<div id="method-Ext.Element-setOpacity"></div>/**
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* Set the opacity of the element
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* @param {Float} opacity The new opacity. 0 = transparent, .5 = 50% visibile, 1 = fully visible, etc
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* @param {Boolean/Object} animate (optional) a standard Element animation config object or <tt>true</tt> for
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* the default animation (<tt>{duration: .35, easing: 'easeIn'}</tt>)
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* @return {Ext.Element} this
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setOpacity : function(opacity, animate){
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if(!animate || !me.anim){
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var opac = opacity < 1 ? 'alpha(opacity=' + opacity * 100 + ')' : '',
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val = s.filter.replace(opacityRe, '').replace(trimRe, '');
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s.filter = val + (val.length > 0 ? ' ' : '') + opac;
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me.anim({opacity: {to: opacity}}, me.preanim(arguments, 1), null, .35, 'easeIn');
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<div id="method-Ext.Element-clearOpacity"></div>/**
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* Clears any opacity settings from this element. Required in some cases for IE.
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* @return {Ext.Element} this
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clearOpacity : function(){
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var style = this.dom.style;
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if(!Ext.isEmpty(style.filter)){
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style.filter = style.filter.replace(opacityRe, '').replace(trimRe, '');
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style.opacity = style['-moz-opacity'] = style['-khtml-opacity'] = '';
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<div id="method-Ext.Element-getHeight"></div>/**
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* Returns the offset height of the element
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* @param {Boolean} contentHeight (optional) true to get the height minus borders and padding
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* @return {Number} The element's height
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getHeight : function(contentHeight){
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h = MATH.max(dom.offsetHeight, dom.clientHeight) || 0;
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h = !contentHeight ? h : h - me.getBorderWidth("tb") - me.getPadding("tb");
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return h < 0 ? 0 : h;
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<div id="method-Ext.Element-getWidth"></div>/**
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* Returns the offset width of the element
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* @param {Boolean} contentWidth (optional) true to get the width minus borders and padding
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* @return {Number} The element's width
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getWidth : function(contentWidth){
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w = MATH.max(dom.offsetWidth, dom.clientWidth) || 0;
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w = !contentWidth ? w : w - me.getBorderWidth("lr") - me.getPadding("lr");
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return w < 0 ? 0 : w;
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<div id="method-Ext.Element-setWidth"></div>/**
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* Set the width of this Element.
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* @param {Mixed} width The new width. This may be one of:<div class="mdetail-params"><ul>
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* <li>A Number specifying the new width in this Element's {@link #defaultUnit}s (by default, pixels).</li>
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* <li>A String used to set the CSS width style. Animation may <b>not</b> be used.
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* @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
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* @return {Ext.Element} this
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setWidth : function(width, animate){
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width = me.adjustWidth(width);
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!animate || !me.anim ?
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me.dom.style.width = me.addUnits(width) :
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me.anim({width : {to : width}}, me.preanim(arguments, 1));
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<div id="method-Ext.Element-setHeight"></div>/**
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* Set the height of this Element.
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// change the height to 200px and animate with default configuration
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Ext.fly('elementId').setHeight(200, true);
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// change the height to 150px and animate with a custom configuration
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Ext.fly('elId').setHeight(150, {
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duration : .5, // animation will have a duration of .5 seconds
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// will change the content to "finished"
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callback: function(){ this.{@link #update}("finished"); }
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* @param {Mixed} height The new height. This may be one of:<div class="mdetail-params"><ul>
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* <li>A Number specifying the new height in this Element's {@link #defaultUnit}s (by default, pixels.)</li>
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* <li>A String used to set the CSS height style. Animation may <b>not</b> be used.</li>
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* @param {Boolean/Object} animate (optional) true for the default animation or a standard Element animation config object
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* @return {Ext.Element} this
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setHeight : function(height, animate){
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height = me.adjustHeight(height);
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!animate || !me.anim ?
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me.dom.style.height = me.addUnits(height) :
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me.anim({height : {to : height}}, me.preanim(arguments, 1));
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<div id="method-Ext.Element-getBorderWidth"></div>/**
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* Gets the width of the border(s) for the specified side(s)
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* @param {String} side Can be t, l, r, b or any combination of those to add multiple values. For example,
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* passing <tt>'lr'</tt> would get the border <b><u>l</u></b>eft width + the border <b><u>r</u></b>ight width.
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* @return {Number} The width of the sides passed added together
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getBorderWidth : function(side){
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return addStyles.call(this, side, borders);
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<div id="method-Ext.Element-getPadding"></div>/**
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* Gets the width of the padding(s) for the specified side(s)
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* @param {String} side Can be t, l, r, b or any combination of those to add multiple values. For example,
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* passing <tt>'lr'</tt> would get the padding <b><u>l</u></b>eft + the padding <b><u>r</u></b>ight.
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* @return {Number} The padding of the sides passed added together
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getPadding : function(side){
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return addStyles.call(this, side, paddings);
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<div id="method-Ext.Element-clip"></div>/**
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* Store the current overflow setting and clip overflow on the element - use <tt>{@link #unclip}</tt> to remove
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* @return {Ext.Element} this
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if(!data(dom, ISCLIPPED)){
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data(dom, ISCLIPPED, true);
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data(dom, ORIGINALCLIP, {
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o: me.getStyle(OVERFLOW),
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x: me.getStyle(OVERFLOWX),
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y: me.getStyle(OVERFLOWY)
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me.setStyle(OVERFLOW, HIDDEN);
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me.setStyle(OVERFLOWX, HIDDEN);
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me.setStyle(OVERFLOWY, HIDDEN);
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<div id="method-Ext.Element-unclip"></div>/**
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* Return clipping (overflow) to original clipping before <tt>{@link #clip}</tt> was called
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* @return {Ext.Element} this
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if(data(dom, ISCLIPPED)){
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data(dom, ISCLIPPED, false);
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var o = data(dom, ORIGINALCLIP);
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me.setStyle(OVERFLOW, o.o);
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me.setStyle(OVERFLOWX, o.x);
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me.setStyle(OVERFLOWY, o.y);
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addStyles : addStyles,
b'\\ No newline at end of file'