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-Sencha Documentation Project
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+
+
+
+
+ The source code
+
+
+
+
+
+
+ /**
+ * @class Ext.Element
+ */
+Ext.applyIf(Ext.Element, {
+ unitRe: /\d+(px|em|%|en|ex|pt|in|cm|mm|pc)$/i,
+ camelRe: /(-[a-z])/gi,
+ opacityRe: /alpha\(opacity=(.*)\)/i,
+ cssRe: /([a-z0-9-]+)\s*:\s*([^;\s]+(?:\s*[^;\s]+)*);?/gi,
+ propertyCache: {},
+ defaultUnit : "px",
+ borders: {l: 'border-left-width', r: 'border-right-width', t: 'border-top-width', b: 'border-bottom-width'},
+ paddings: {l: 'padding-left', r: 'padding-right', t: 'padding-top', b: 'padding-bottom'},
+ margins: {l: 'margin-left', r: 'margin-right', t: 'margin-top', b: 'margin-bottom'},
+
+ // Reference the prototype's version of the method. Signatures are identical.
+ addUnits : Ext.Element.prototype.addUnits,
+
+ /**
+ * Parses a number or string representing margin sizes into an object. Supports CSS-style margin declarations
+ * (e.g. 10, "10", "10 10", "10 10 10" and "10 10 10 10" are all valid options and would return the same result)
+ * @static
+ * @param {Number/String} box The encoded margins
+ * @return {Object} An object with margin sizes for top, right, bottom and left
+ */
+ parseBox : function(box) {
+ if (Ext.isObject(box)) {
+ return {
+ top: box.top || 0,
+ right: box.right || 0,
+ bottom: box.bottom || 0,
+ left: box.left || 0
+ };
+ } else {
+ if (typeof box != 'string') {
+ box = box.toString();
+ }
+ var parts = box.split(' '),
+ ln = parts.length;
+
+ if (ln == 1) {
+ parts[1] = parts[2] = parts[3] = parts[0];
+ }
+ else if (ln == 2) {
+ parts[2] = parts[0];
+ parts[3] = parts[1];
+ }
+ else if (ln == 3) {
+ parts[3] = parts[1];
+ }
+
+ return {
+ top :parseFloat(parts[0]) || 0,
+ right :parseFloat(parts[1]) || 0,
+ bottom:parseFloat(parts[2]) || 0,
+ left :parseFloat(parts[3]) || 0
+ };
+ }
+
+ },
+
+ /**
+ * Parses a number or string representing margin sizes into an object. Supports CSS-style margin declarations
+ * (e.g. 10, "10", "10 10", "10 10 10" and "10 10 10 10" are all valid options and would return the same result)
+ * @static
+ * @param {Number/String} box The encoded margins
+ * @param {String} units The type of units to add
+ * @return {String} An string with unitized (px if units is not specified) metrics for top, right, bottom and left
+ */
+ unitizeBox : function(box, units) {
+ var A = this.addUnits,
+ B = this.parseBox(box);
+
+ return A(B.top, units) + ' ' +
+ A(B.right, units) + ' ' +
+ A(B.bottom, units) + ' ' +
+ A(B.left, units);
+
+ },
+
+ // private
+ camelReplaceFn : function(m, a) {
+ return a.charAt(1).toUpperCase();
+ },
+
+ /**
+ * Normalizes CSS property keys from dash delimited to camel case JavaScript Syntax.
+ * For example:
+ * <ul>
+ * <li>border-width -> borderWidth</li>
+ * <li>padding-top -> paddingTop</li>
+ * </ul>
+ * @static
+ * @param {String} prop The property to normalize
+ * @return {String} The normalized string
+ */
+ normalize : function(prop) {
+ if (prop == 'float') {
+ prop = Ext.supports.Float ? 'cssFloat' : 'styleFloat';
+ }
+ return this.propertyCache[prop] || (this.propertyCache[prop] = prop.replace(this.camelRe, this.camelReplaceFn));
+ },
+
+ /**
+ * Retrieves the document height
+ * @static
+ * @return {Number} documentHeight
+ */
+ getDocumentHeight: function() {
+ return Math.max(!Ext.isStrict ? document.body.scrollHeight : document.documentElement.scrollHeight, this.getViewportHeight());
+ },
+
+ /**
+ * Retrieves the document width
+ * @static
+ * @return {Number} documentWidth
+ */
+ getDocumentWidth: function() {
+ return Math.max(!Ext.isStrict ? document.body.scrollWidth : document.documentElement.scrollWidth, this.getViewportWidth());
+ },
+
+ /**
+ * Retrieves the viewport height of the window.
+ * @static
+ * @return {Number} viewportHeight
+ */
+ getViewportHeight: function(){
+ return window.innerHeight;
+ },
+
+ /**
+ * Retrieves the viewport width of the window.
+ * @static
+ * @return {Number} viewportWidth
+ */
+ getViewportWidth : function() {
+ return window.innerWidth;
+ },
+
+ /**
+ * Retrieves the viewport size of the window.
+ * @static
+ * @return {Object} object containing width and height properties
+ */
+ getViewSize : function() {
+ return {
+ width: window.innerWidth,
+ height: window.innerHeight
+ };
+ },
+
+ /**
+ * Retrieves the current orientation of the window. This is calculated by
+ * determing if the height is greater than the width.
+ * @static
+ * @return {String} Orientation of window: 'portrait' or 'landscape'
+ */
+ getOrientation : function() {
+ if (Ext.supports.OrientationChange) {
+ return (window.orientation == 0) ? 'portrait' : 'landscape';
+ }
+
+ return (window.innerHeight > window.innerWidth) ? 'portrait' : 'landscape';
+ },
+
+ /**
+ * Returns the top Element that is located at the passed coordinates
+ * @static
+ * @param {Number} x The x coordinate
+ * @param {Number} y The y coordinate
+ * @return {String} The found Element
+ */
+ fromPoint: function(x, y) {
+ return Ext.get(document.elementFromPoint(x, y));
+ },
+
+ /**
+ * Converts a CSS string into an object with a property for each style.
+ * <p>
+ * The sample code below would return an object with 2 properties, one
+ * for background-color and one for color.</p>
+ * <pre><code>
+var css = 'background-color: red;color: blue; ';
+console.log(Ext.Element.parseStyles(css));
+ * </code></pre>
+ * @static
+ * @param {String} styles A CSS string
+ * @return {Object} styles
+ */
+ parseStyles: function(styles){
+ var out = {},
+ cssRe = this.cssRe,
+ matches;
+
+ if (styles) {
+ // Since we're using the g flag on the regex, we need to set the lastIndex.
+ // This automatically happens on some implementations, but not others, see:
+ // http://stackoverflow.com/questions/2645273/javascript-regular-expression-literal-persists-between-function-calls
+ // http://blog.stevenlevithan.com/archives/fixing-javascript-regexp
+ cssRe.lastIndex = 0;
+ while ((matches = cssRe.exec(styles))) {
+ out[matches[1]] = matches[2];
+ }
+ }
+ return out;
+ }
+});
+
+
+