/** * @class Ext.feature * @singleton * * A simple class to verify if a browser feature exists or not on the current device. * * if (Ext.feature.has.Canvas) { * // do some cool things with canvas here * } * * See the {@link #has} property/method for details of the features that can be detected. * */Ext.feature = {// @define Ext.env.Feature // @define Ext.feature // @define Ext.supports // @require Ext.String // @require Ext.env.Browser // @require Ext.env.OS /** * @method has * @member Ext.feature * Verifies if a browser feature exists or not on the current device. * * A "hybrid" property, can be either accessed as a method call, i.e: * * if (Ext.feature.has('Canvas')) { * // ... * } * * or as an object with boolean properties, i.e: * * if (Ext.feature.has.Canvas) { * // ... * } * * For possible properties/parameter values see `Ext.supports`. * * @param {String} name The feature name to check. * @return {Boolean} */ has: function (name) { return !!this.has[name]; }, testElements: {}, getTestElement: function(tag, createNew) { if (tag === undefined) { tag = 'div'; } else if (typeof tag !== 'string') { return tag; } if (createNew) { return document.createElement(tag); } if (!this.testElements[tag]) { this.testElements[tag] = document.createElement(tag); } return this.testElements[tag]; }, isStyleSupported: function(name, tag) { var elementStyle = this.getTestElement(tag).style, cName = Ext.String.capitalize(name); if (typeof elementStyle[name] !== 'undefined' || typeof elementStyle[Ext.browser.getStylePrefix(name) + cName] !== 'undefined') { return true; } return false; }, isStyleSupportedWithoutPrefix: function(name, tag) { var elementStyle = this.getTestElement(tag).style; if (typeof elementStyle[name] !== 'undefined') { return true; } return false; }, isEventSupported: function(name, tag) { if (tag === undefined) { tag = window; } var element = this.getTestElement(tag), eventName = 'on' + name.toLowerCase(), isSupported = (eventName in element); if (!isSupported) { if (element.setAttribute && element.removeAttribute) { element.setAttribute(eventName, ''); isSupported = typeof element[eventName] === 'function'; if (typeof element[eventName] !== 'undefined') { element[eventName] = undefined; } element.removeAttribute(eventName); } } return isSupported; }, // This is a local copy of certain logic from Element.getStyle // to break a dependancy between the supports mechanism and Element // use this instead of element references to check for styling info getStyle: function (element, styleName) { var view = element.ownerDocument.defaultView, style = (view ? view.getComputedStyle(element, null) : element.currentStyle); return (style || element.style)[styleName]; }, getSupportedPropertyName: function(object, name) { var vendorName = Ext.browser.getVendorProperyName(name); if (vendorName in object) { return vendorName; } else if (name in object) { return name; } return null; }, /** * Runs feature detection routines and sets the various flags. This is called when * the scripts loads (very early) and again at {@link Ext#onReady}. Some detections * can be run immediately. Others that require the document body will not run until * domready (these have the `ready` flag set). * * Each test is run only once, so calling this method from an onReady function is safe * and ensures that all flags have been set. * @private */ detect: function (isReady) { var me = this, doc = document, toRun = me.toRun || me.tests, n = toRun.length, div = doc.createElement('div'), notRun = [], supports = Ext.supports, has = me.has, name, names, test, vector, value; //<feature legacyBrowser> // Only the legacy browser tests use this div so clip this out if we don't need // to use it. div.innerHTML = '<div style="height:30px;width:50px;">' + '<div style="height:20px;width:20px;"></div>' + '</div>' + '<div style="width: 200px; height: 200px; position: relative; padding: 5px;">' + '<div style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;"></div>' + '</div>' + '<div style="position: absolute; left: 10%; top: 10%;"></div>' + '<div style="float:left; background-color:transparent;"></div>'; if (isReady) { doc.body.appendChild(div); } //</feature> vector = me.preDetected[Ext.browser.identity] || []; while (n--) { test = toRun[n]; value = vector[n]; name = test.name; names = test.names; if (value === undefined) { if (!isReady && test.ready) { // test requires domready state notRun.push(test); continue; } value = test.fn.call(me, doc, div); } // Store test results on Ext.supports and Ext.feature.has if (name) { supports[name] = has[name] = value; } else if (names) { while (names.length) { name = names.pop(); supports[name] = has[name] = value; } } } if (isReady) { doc.body.removeChild(div); } me.toRun = notRun; }, //</debug> report: function () { var values = [], len = this.tests.length, i; for (i = 0; i < len; ++i) { values.push(this.has[this.tests[i].name] ? 1 : 0); } Ext.log(Ext.browser.identity + ': [' + values.join(',') + ']'); }, //</debug> preDetected: { // TODO }, /** * @class Ext.supports * * Contains information about features supported in the current environment as well * as bugs detected. * * @singleton */ tests: [{ /** * @property CloneNodeCopiesExpando `true` if the native DOM cloneNode method copies * expando properties to the newly cloned node. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'CloneNodeCopiesExpando', fn: function() { var el = document.createElement('div'); el.expandoProp = {}; return el.cloneNode().expandoProp === el.expandoProp; } }, { /** * @property CSSPointerEvents `true` if document environment supports the CSS3 * pointer-events style. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'CSSPointerEvents', fn: function (doc) { return 'pointerEvents' in doc.documentElement.style; } },{ /** * @property CSS3BoxShadow `true` if document environment supports the CSS3 * box-shadow style. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'CSS3BoxShadow', fn: function (doc) { return 'boxShadow' in doc.documentElement.style || 'WebkitBoxShadow' in doc.documentElement.style || 'MozBoxShadow' in doc.documentElement.style; } }, { name: 'CSS3NegationSelector', fn: function(doc) { try { doc.querySelectorAll("foo:not(bar)"); } catch (e) { return false; } return true; } },{ /** * @property ClassList `true` if document environment supports the HTML5 * classList API. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'ClassList', fn: function (doc) { return !!doc.documentElement.classList; } },{ /** * @property Canvas `true` if the device supports Canvas. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'Canvas', fn: function() { var element = this.getTestElement('canvas'); return !!(element && element.getContext && element.getContext('2d')); } },{ /** * @property Svg `true` if the device supports SVG. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'Svg', fn: function(doc) { return !!(doc.createElementNS && !!doc.createElementNS("http:/" + "/www.w3.org/2000/svg", "svg").createSVGRect); } },{ /** * @property Vml `true` if the device supports VML. * @type {Boolean} * * This property is available at application boot time, before document ready. */ name: 'Vml', fn: function() { var element = this.getTestElement(), ret = false; element.innerHTML = "<!--[if vml]><br><![endif]-->"; ret = (element.childNodes.length === 1); element.innerHTML = ""; return ret; } },{ /** * @property {Boolean} Touch `true` if the browser supports touch input. * * This property is available at application boot time, before document ready. */ name: 'Touch', fn: function() { // IE10 uses a vendor-prefixed maxTouchPoints property var maxTouchPoints = navigator.msMaxTouchPoints || navigator.maxTouchPoints; // if the browser has touch events we can be reasonably sure the device has // a touch screen // browsers that use pointer event have maxTouchPoints > 1 if the // device supports touch input // Chrome Desktop < 39 reports maxTouchPoints === 1 even if there is no // touch support on the device // http://www.w3.org/TR/pointerevents/#widl-Navigator-maxTouchPoints // Chrome Desktop > 39 properly reports maxTouchPoints === 0 and // Chrome Desktop Device Emulation mode reports maxTouchPoints === 1 if (Ext.browser.is.Chrome && Ext.browser.version.isLessThanOrEqual(39)) { return (Ext.supports.TouchEvents && maxTouchPoints !== 1) || maxTouchPoints > 1; } else { return Ext.supports.TouchEvents || maxTouchPoints > 0; } } },{ /** * @property {Boolean} TouchEvents `true` if the device supports touch events (`touchstart`, * `touchmove`, `touchend`). * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'TouchEvents', fn: function() { return this.isEventSupported('touchend'); } },{ name: 'PointerEvents', fn: function() { return navigator.pointerEnabled; } },{ name: 'MSPointerEvents', fn: function() { return navigator.msPointerEnabled; } },{ /** * @property Orientation `true` if the device supports different orientations. * @type {Boolean} * * This property is available at application boot time, before document ready. */ name: 'Orientation', fn: function() { return ('orientation' in window) && this.isEventSupported('orientationchange'); } },{ /** * @property OrientationChange `true` if the device supports the `orientationchange` * event. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'OrientationChange', fn: function() { return this.isEventSupported('orientationchange'); } },{ /** * @property DeviceMotion `true` if the device supports device motion (acceleration * and rotation rate). * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'DeviceMotion', fn: function() { return this.isEventSupported('devicemotion'); } },{ /** * @property Geolocation `true` if the device supports GeoLocation. * @type {Boolean} * * This property is available at application boot time, before document ready. */ /** * @property GeoLocation `true` if the device supports Geo-location. * @type {Boolean} * @deprecated Use `Geolocation` instead (notice the lower-casing of 'L'). */ names: [ 'Geolocation', 'GeoLocation' ], fn: function() { return 'geolocation' in window.navigator; } },{ name: 'SqlDatabase', fn: function() { return 'openDatabase' in window; } },{ name: 'WebSockets', fn: function() { return 'WebSocket' in window; } },{ /** * @property Range `true` if browser support document.createRange native method. * See https://developer.mozilla.org/en/DOM/range. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'Range', fn: function() { return !!document.createRange; } },{ /** * @property CreateContextualFragment `true` if browser support CreateContextualFragment * range native methods. * See https://developer.mozilla.org/en/DOM/range.createContextualFragment * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'CreateContextualFragment', fn: function() { var range = !!document.createRange ? document.createRange() : false; return range && !!range.createContextualFragment; } },{ /** * @property History `true` if the device supports HTML5 history. See * https://developer.mozilla.org/en/DOM/Manipulating_the_browser_history * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'History', fn: function() { return ('history' in window && 'pushState' in window.history); } },{ /** * @property Css3DTransforms `true` if the device supports CSS3DTransform. * @type {Boolean} * * This property is available at application boot time, before document ready. */ name: 'Css3dTransforms', fn: function() { // See https://sencha.jira.com/browse/TOUCH-1544 return this.has('CssTransforms') && this.isStyleSupported('perspective'); // TODO - double check vs Ext JS flavor: //return (typeof WebKitCSSMatrix != 'undefined' && new WebKitCSSMatrix().hasOwnProperty('m41')); } },{ // Important that this goes after Css3dTransforms, since tests are run in reverse order name: 'CssTransforms', fn: function() { return this.isStyleSupported('transform'); } },{ name: 'CssTransformNoPrefix', fn: function() { return this.isStyleSupportedWithoutPrefix('transform'); } },{ name: 'CssAnimations', fn: function() { return this.isStyleSupported('animationName'); } },{ /** * @property Transitions `true` if the device supports CSS3 Transitions. * * This property is available at application boot time, before document ready. * @type {Boolean} */ names: [ 'CssTransitions', 'Transitions' ], fn: function() { return this.isStyleSupported('transitionProperty'); } },{ /** * @property Audio `true` if the device supports the HTML5 `audio` tag. * * This property is available at application boot time, before document ready. * @type {Boolean} */ /** * @property AudioTag `true` if the device supports the HTML5 `audio` tag. * @type {Boolean} * @deprecated Use `Audio` instead. */ names: [ 'Audio', 'AudioTag' ], fn: function() { return !!this.getTestElement('audio').canPlayType; } },{ /** * @property Video `true` if the device supports the HTML5 `video` tag. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'Video', fn: function() { return !!this.getTestElement('video').canPlayType; } },{ /** * @property LocalStorage `true` if localStorage is supported. * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'LocalStorage', fn: function() { try { // IE10/Win8 throws "Access Denied" accessing window.localStorage, so // this test needs to have a try/catch if ('localStorage' in window && window['localStorage'] !== null) { // jshint ignore:line //this should throw an error in private browsing mode in iOS as well localStorage.setItem('sencha-localstorage-test', 'test success'); //clean up if setItem worked localStorage.removeItem('sencha-localstorage-test'); return true; } } catch ( e ) { // ignore } return false; } },{ /** * @property XHR2 `true` if the browser supports XMLHttpRequest * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'XHR2', fn: function() { return window.ProgressEvent && window.FormData && window.XMLHttpRequest && ('withCredentials' in new XMLHttpRequest()); } }, { /** * @property XHRUploadProgress `true` if the browser supports XMLHttpRequest * upload progress info * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'XHRUploadProgress', fn: function() { if(window.XMLHttpRequest && !Ext.browser.is.AndroidStock) { var xhr = new XMLHttpRequest(); return xhr && ('upload' in xhr) && ('onprogress' in xhr.upload); } return false; } }, { /** * @property NumericInputPlaceHolder `true` if the browser supports placeholders * on numeric input fields * * This property is available at application boot time, before document ready. * @type {Boolean} */ name: 'NumericInputPlaceHolder', fn: function() { return !(Ext.browser.is.AndroidStock4 && Ext.os.version.getMinor() < 2); } }, /** * @property {String} matchesSelector * The method name which matches an element against a selector if implemented in this environment. * * This property is available at application boot time, before document ready. */ { name: 'matchesSelector', fn: function() { var el = document.documentElement, w3 = 'matches', wk = 'webkitMatchesSelector', ms = 'msMatchesSelector', mz = 'mozMatchesSelector'; return el[w3] ? w3 : el[wk] ? wk : el[ms] ? ms : el[mz] ? mz : null; } }, //<feature legacyBrowser> /** * @property RightMargin `true` if the device supports right margin. * See https://bugs.webkit.org/show_bug.cgi?id=13343 for why this is needed. * * This property is *NOT* available at application boot time. Only after the document ready event. * @type {Boolean} */ { name: 'RightMargin', ready: true, fn: function(doc, div) { var view = doc.defaultView; return !(view && view.getComputedStyle(div.firstChild.firstChild, null).marginRight !== '0px'); } }, /** * @property DisplayChangeInputSelectionBug `true` if INPUT elements lose their * selection when their display style is changed. Essentially, if a text input * has focus and its display style is changed, the I-beam disappears. * * This bug is encountered due to the work around in place for the {@link #RightMargin} * bug. This has been observed in Safari 4.0.4 and older, and appears to be fixed * in Safari 5. It's not clear if Safari 4.1 has the bug, but it has the same WebKit * version number as Safari 5 (according to http://unixpapa.com/js/gecko.html). * * This property is available at application boot time, before document ready. */ { name: 'DisplayChangeInputSelectionBug', fn: function() { var webKitVersion = Ext.webKitVersion; // WebKit but older than Safari 5 or Chrome 6: return 0 < webKitVersion && webKitVersion < 533; } }, /** * @property DisplayChangeTextAreaSelectionBug `true` if TEXTAREA elements lose their * selection when their display style is changed. Essentially, if a text area has * focus and its display style is changed, the I-beam disappears. * * This bug is encountered due to the work around in place for the {@link #RightMargin} * bug. This has been observed in Chrome 10 and Safari 5 and older, and appears to * be fixed in Chrome 11. * * This property is available at application boot time, before document ready. */ { name: 'DisplayChangeTextAreaSelectionBug', fn: function() { var webKitVersion = Ext.webKitVersion; /* Has bug w/textarea: (Chrome) Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.127 Safari/534.16 (Safari) Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_7; en-us) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1 No bug: (Chrome) Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.57 Safari/534.24 */ return 0 < webKitVersion && webKitVersion < 534.24; } }, /** * @property TransparentColor `true` if the device supports transparent color. * @type {Boolean} * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'TransparentColor', ready: true, fn: function(doc, div, view) { view = doc.defaultView; return !(view && view.getComputedStyle(div.lastChild, null).backgroundColor !== 'transparent'); } }, /** * @property ComputedStyle `true` if the browser supports document.defaultView.getComputedStyle(). * @type {Boolean} * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'ComputedStyle', ready: true, fn: function(doc, div, view) { view = doc.defaultView; return view && view.getComputedStyle; } }, /** * @property Float `true` if the device supports CSS float. * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'Float', fn: function(doc) { return 'cssFloat' in doc.documentElement.style; } }, /** * @property CSS3BorderRadius `true` if the device supports CSS3 border radius. * @type {Boolean} * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'CSS3BorderRadius', ready: true, fn: function(doc) { var domPrefixes = ['borderRadius', 'BorderRadius', 'MozBorderRadius', 'WebkitBorderRadius', 'OBorderRadius', 'KhtmlBorderRadius'], pass = false, i; for (i = 0; i < domPrefixes.length; i++) { if (doc.documentElement.style[domPrefixes[i]] !== undefined) { pass = true; } } return pass && !Ext.isIE9; } }, /** * @property CSS3LinearGradient `true` if the device supports CSS3 linear gradients. * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'CSS3LinearGradient', fn: function(doc, div) { var property = 'background-image:', webkit = '-webkit-gradient(linear, left top, right bottom, from(black), to(white))', w3c = 'linear-gradient(left top, black, white)', moz = '-moz-' + w3c, ms = '-ms-' + w3c, opera = '-o-' + w3c, options = [property + webkit, property + w3c, property + moz, property + ms, property + opera]; div.style.cssText = options.join(';'); return (("" + div.style.backgroundImage).indexOf('gradient') !== -1) && !Ext.isIE9; } }, /** * @property MouseEnterLeave `true` if the browser supports mouseenter and mouseleave events * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'MouseEnterLeave', fn: function(doc){ return ('onmouseenter' in doc.documentElement && 'onmouseleave' in doc.documentElement); } }, /** * @property MouseWheel `true` if the browser supports the mousewheel event * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'MouseWheel', fn: function(doc) { return ('onmousewheel' in doc.documentElement); } }, /** * @property Opacity `true` if the browser supports normal css opacity * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'Opacity', fn: function(doc, div){ // Not a strict equal comparison in case opacity can be converted to a number. if (Ext.isIE8) { return false; } div.firstChild.style.cssText = 'opacity:0.73'; return div.firstChild.style.opacity == '0.73'; // jshint ignore:line } }, /** * @property Placeholder `true` if the browser supports the HTML5 placeholder attribute on inputs * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'Placeholder', fn: function(doc) { return 'placeholder' in doc.createElement('input'); } }, /** * @property Direct2DBug `true` if when asking for an element's dimension via offsetWidth or offsetHeight, * getBoundingClientRect, etc. the browser returns the subpixel width rounded to the nearest pixel. * * This property is available at application boot time, before document ready. * @type {Boolean} */ { name: 'Direct2DBug', fn: function(doc) { return Ext.isString(doc.documentElement.style.msTransformOrigin) && Ext.isIE9m; } }, /** * @property BoundingClientRect `true` if the browser supports the getBoundingClientRect method on elements * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'BoundingClientRect', fn: function(doc) { return 'getBoundingClientRect' in doc.documentElement; } }, /** * @property RotatedBoundingClientRect `true` if the BoundingClientRect is * rotated when the element is rotated using a CSS transform. * @type {Boolean} * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'RotatedBoundingClientRect', ready: true, fn: function(doc) { var body = doc.body, supports = false, el = doc.createElement('div'), style = el.style; if (el.getBoundingClientRect) { // If the document body already has child nodes (text nodes etc) we can end // up with subpixel rounding errors in IE11 when measuring the height. // Absolute positioning prevents this. style.position = 'absolute'; style.top = "0"; style.WebkitTransform = style.MozTransform = style.msTransform = style.OTransform = style.transform = 'rotate(90deg)'; style.width = '100px'; style.height = '30px'; body.appendChild(el); supports = el.getBoundingClientRect().height !== 100; body.removeChild(el); } return supports; } }, /** * @property ChildContentClearedWhenSettingInnerHTML `true` if created child elements * lose their innerHTML when modifying the innerHTML of the parent element. * @type {Boolean} * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'ChildContentClearedWhenSettingInnerHTML', ready: true, fn: function() { var el = this.getTestElement(), child; el.innerHTML = '<div>a</div>'; child = el.firstChild; el.innerHTML = '<div>b</div>'; return child.innerHTML !== 'a'; } }, { name: 'IncludePaddingInWidthCalculation', ready: true, fn: function(doc, div){ return div.childNodes[1].firstChild.offsetWidth === 210; } }, { name: 'IncludePaddingInHeightCalculation', ready: true, fn: function(doc, div){ return div.childNodes[1].firstChild.offsetHeight === 210; } }, /** * @property TextAreaMaxLength `true` if the browser supports maxlength on textareas. * @type {Boolean} * * This property is available at application boot time, before document ready. */ { name: 'TextAreaMaxLength', fn: function(doc){ return ('maxlength' in doc.createElement('textarea')); } }, /** * @property GetPositionPercentage `true` if the browser will return the left/top/right/bottom * position as a percentage when explicitly set as a percentage value. * * This property is *NOT* available at application boot time. Only after the document ready event. * @type {Boolean} */ // Related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=707691#c7 { name: 'GetPositionPercentage', ready: true, fn: function(doc, div){ return Ext.feature.getStyle(div.childNodes[2], 'left') === '10%'; } }, /** * @property {Boolean} PercentageHeightOverflowBug * In some browsers (IE quirks, IE6, IE7, IE9, chrome, safari and opera at the time * of this writing) a percentage-height element ignores the horizontal scrollbar * of its parent element. This method returns true if the browser is affected * by this bug. * * This property is *NOT* available at application boot time. Only after the document ready event. * @private */ { name: 'PercentageHeightOverflowBug', ready: true, fn: function(doc) { var hasBug = false, style, el; if (Ext.getScrollbarSize().height) { // must have space-consuming scrollbars for bug to be possible el = this.getTestElement('div', true); style = el.style; style.height = '50px'; style.width = '50px'; style.overflow = 'auto'; style.position = 'absolute'; el.innerHTML = [ '<div style="display:table;height:100%;">', // The element that causes the horizontal overflow must be // a child of the element with the 100% height, otherwise // horizontal overflow is not triggered in webkit quirks mode '<div style="width:51px;"></div>', '</div>' ].join(''); doc.body.appendChild(el); if (el.firstChild.offsetHeight === 50) { hasBug = true; } doc.body.removeChild(el); } return hasBug; } }, /** * @property {Boolean} xOriginBug * In Chrome 24.0, an RTL element which has vertical overflow positions its right X origin incorrectly. * It skips a non-existent scrollbar which has been moved to the left edge due to the RTL setting. * * http://code.google.com/p/chromium/issues/detail?id=174656 * * This method returns true if the browser is affected by this bug. * * This property is *NOT* available at application boot time. Only after the document ready event. * @private */ { name: 'xOriginBug', ready: true, fn: function(doc, div) { div.innerHTML = '<div id="b1" style="height:100px;width:100px;direction:rtl;position:relative;overflow:scroll">' + '<div id="b2" style="position:relative;width:100%;height:20px;"></div>' + '<div id="b3" style="position:absolute;width:20px;height:20px;top:0px;right:0px"></div>' + '</div>'; var outerBox = document.getElementById('b1').getBoundingClientRect(), b2 = document.getElementById('b2').getBoundingClientRect(), b3 = document.getElementById('b3').getBoundingClientRect(); return (b2.left !== outerBox.left && b3.right !== outerBox.right); } }, /** * @property {Boolean} ScrollWidthInlinePaddingBug * In some browsers the right padding of an overflowing element is not accounted * for in its scrollWidth. The result can vary depending on whether or not * The element contains block-level children. This method tests the effect * of padding on scrollWidth when there are no block-level children inside the * overflowing element. * * This method returns true if the browser is affected by this bug. * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'ScrollWidthInlinePaddingBug', ready: true, fn: function(doc) { var hasBug = false, style, el; el = doc.createElement('div'); style = el.style; style.height = '50px'; style.width = '50px'; style.padding = '10px'; style.overflow = 'hidden'; style.position = 'absolute'; el.innerHTML = '<span style="display:inline-block;zoom:1;height:60px;width:60px;"></span>'; doc.body.appendChild(el); if (el.scrollWidth === 70) { hasBug = true; } doc.body.removeChild(el); return hasBug; } }, /** * @property {Boolean} rtlVertScrollbarOnRight * Safari, in RTL mode keeps the scrollbar at the right side. * This means that when two elements must keep their left/right positions synched, if one has no vert * scrollbar, it must have some extra padding. * See https://sencha.jira.com/browse/EXTJSIV-11245 * * This property is *NOT* available at application boot time. Only after the document ready event. * @private */ { name: 'rtlVertScrollbarOnRight', ready: true, fn: function(doc, div) { div.innerHTML = '<div style="height:100px;width:100px;direction:rtl;overflow:scroll">' + '<div style="width:20px;height:200px;"></div>' + '</div>'; var outerBox = div.firstChild, innerBox = outerBox.firstChild; return (innerBox.offsetLeft + innerBox.offsetWidth !== outerBox.offsetLeft + outerBox.offsetWidth); } }, /** * @property {Boolean} rtlVertScrollbarOverflowBug * In Chrome, in RTL mode, horizontal overflow only into the vertical scrollbar does NOT trigger horizontal scrollability. * See https://code.google.com/p/chromium/issues/detail?id=179332 * We need to detect this for when a grid header needs to have exactly the same horizontal scrolling range as its table view. * See {@link Ext.grid.ColumnLayout#publishInnerCtSize} * TODO: Remove this when all supported Chrome versions are fixed. * * This property is *NOT* available at application boot time. Only after the document ready event. * @private */ { name: 'rtlVertScrollbarOverflowBug', ready: true, fn: function(doc, div) { div.innerHTML = '<div style="height:100px;width:100px;direction:rtl;overflow:auto">' + '<div style="width:95px;height:200px;"></div>' + '</div>'; // If the bug is present, the 95 pixel wide inner div, encroaches into the // vertical scrollbar, but does NOT trigger horizontal overflow, so the clientHeight remains // equal to the offset height. var outerBox = div.firstChild, style = div.style, pos = style.position; // This issue seems to require a repaint to measure correctly style.position = 'absolute'; outerBox.offsetHeight; style.position = pos; return outerBox.clientHeight === outerBox.offsetHeight; } }, { identity: 'defineProperty', fn: function () { if (Ext.isIE8m) { Ext.Object.defineProperty = Ext.emptyFn; return false; } return true; } }, { identify: 'nativeXhr', fn: function () { if (typeof XMLHttpRequest !== 'undefined') { return true; } // Apply a polyfill: XMLHttpRequest = function() { // jshint ignore:line try { return new ActiveXObject('MSXML2.XMLHTTP.3.0'); // jshint ignore:line } catch (ex) { return null; } }; return false; } }, /** * @property {Boolean} SpecialKeyDownRepeat * True if the browser fires the keydown event on specialkey autorepeat * * note 1: IE fires ONLY the keydown event on specialkey autorepeat * note 2: Safari < 3.1, Gecko (Mac/Linux) & Opera fire only the keypress event on * specialkey autorepeat (research done by Jan Wolter at * http://unixpapa.com/js/key.html) * note 3: Opera 12 behaves like other modern browsers so this workaround does not * work anymore * * This property is available at application boot time, before document ready. */ { name: 'SpecialKeyDownRepeat', fn: function() { return Ext.isWebKit ? parseInt(navigator.userAgent.match(/AppleWebKit\/(\d+)/)[1], 10) >= 525 : !(!(Ext.isGecko || Ext.isIE || Ext.isEdge) || (Ext.isOpera && Ext.operaVersion < 12)); } }, /** * @property {Boolean} EmulatedMouseOver * True if the browser emulates a mouseover event on tap (mobile safari) * * This property is available at application boot time, before document ready. */ { name: 'EmulatedMouseOver', fn: function() { // TODO: is it possible to feature detect this? return Ext.os.is.iOS; } }, /** * @property Hashchange True if the user agent supports the hashchange event * * This property is available at application boot time, before document ready. * @type {Boolean} */ { // support Vector 12 name: 'Hashchange', fn: function() { // Note that IE8 in IE7 compatibility mode reports true for 'onhashchange' in window, so also test documentMode var docMode = document.documentMode; return 'onhashchange' in window && (docMode === undefined || docMode > 7); } }, /** * @property FixedTableWidthBug * @private * @type {Boolean} * `true` if the browser has this bug: https://bugs.webkit.org/show_bug.cgi?id=130239 * * This property is *NOT* available at application boot time. Only after the document ready event. */ { name: 'FixedTableWidthBug', ready: true, fn: function() { if (Ext.isIE8) { // IE8 incorrectly detects that we have this bug. return false; } var outer = document.createElement('div'), inner = document.createElement('div'), width; outer.setAttribute('style', 'display:table;table-layout:fixed;'); inner.setAttribute('style', 'display:table-cell;min-width:50px;'); outer.appendChild(inner); document.body.appendChild(outer); // must poke offsetWidth to trigger a reflow before setting width outer.offsetWidth; // jshint ignore:line outer.style.width = '25px'; width = outer.offsetWidth; document.body.removeChild(outer); return width === 50; } }, /** * @property FocusinFocusoutEvents * @private * @type {Boolean} * `true` if the browser supports focusin and focusout events: * https://developer.mozilla.org/en-US/docs/Web/Events/focusin * At this point, only Firefox does not, see this bug: * https://bugzilla.mozilla.org/show_bug.cgi?id=687787 * * This property is available at application boot time, before document ready. */ { name: 'FocusinFocusoutEvents', fn: function() { // There is no reliable way to feature detect focusin/focusout event support. // window.onfocusin will return undefined both in Chrome (where it is supported) // and in Firefox (where it is not supported); adding an element and trying to // focus it will fail when the browser window itself is not focused. return !Ext.isGecko; } }, /** * @property {Boolean} AsyncFocusEvents * `true` if the browser fires focus events (focus, blur, focusin, focusout) * asynchronously, i.e. in a separate event loop invocation. This is only true * for all versions Internet Explorer; Microsoft Edge and other browsers fire * focus events synchronously. */ { name: 'AsyncFocusEvents', fn: function() { // The sad part is that we can't feature detect this because the focus // event won't be fired when the browser window itself is not focused. // Private shortcut for brevity return Ext.asyncFocus = !!Ext.isIE; } }, //</feature> /** * @property {Boolean} HighContrastMode `true` if the browser is currently * running in Windows High Contrast accessibility mode. * * @property {Object} accessibility Accessibility features. * * @property {Boolean} accessibility.Images `true` if the browser is configured * to display images. * * @property {Boolean} accessibility.BackgroundImages `true` if the browser * is configured to display background images. * * @property {Boolean} accessibility.BorderColors `true` if the browser * is configured to honor CSS styling for border colors. * * @property {Boolean} accessibility.LightOnDark `true` if the browser * is currently using reverse colors in light-on-dark accessibility mode. */ { name: 'accessibility', ready: true, fn: function(doc) { var body = doc.body, div, img, style, supports, bgImg; function getColor(colorTxt) { var values = [], colorValue = 0, regex, match; if (colorTxt.indexOf('rgb(') !== -1) { values = colorTxt.replace('rgb(', '').replace(')', '').split(', '); } else if (colorTxt.indexOf('#') !== -1) { regex = colorTxt.length === 7 ? /^#(\S\S)(\S\S)(\S\S)$/ : /^#(\S)(\S)(\S)$/; match = colorTxt.match(regex); if (match) { values = ['0x' + match[1], '0x' + match[2], '0x' + match[3]]; } } for (var i = 0; i < values.length; i++) { colorValue += parseInt(values[i]); } return colorValue; } div = doc.createElement('div'); img = doc.createElement('img'); style = div.style; Ext.apply(style, { width: '2px', position: 'absolute', clip: 'rect(1px,1px,1px,1px)', borderWidth: '1px', borderStyle: 'solid', borderTopTolor: '#f00', borderRightColor: '#ff0', backgroundColor: '#fff', backgroundImage: 'url(' + Ext.BLANK_IMAGE_URL + ')' }); img.alt = ''; img.src = Ext.BLANK_IMAGE_URL; div.appendChild(img); body.appendChild(div); // Now check if the styles were indeed honored style = div.currentStyle || div.style; bgImg = style.backgroundImage; supports = { // In IE it is possible to untick "Show pictures" option in Advanced // settings; this will result in img element reporting its readyState // as 'uninitialized'. // See http://www.paciellogroup.com/blog/2011/10/detecting-if-images-are-disabled-in-browsers/ Images: img.offsetWidth === 1 && img.readyState !== 'uninitialized', BackgroundImages: !(bgImg !== null && (bgImg === "none" || bgImg === "url(invalid-url:)")), BorderColors: style.borderTopColor !== style.borderRightColor, LightOnDark: getColor(style.color) - getColor(style.backgroundColor) > 0 }; Ext.supports.HighContrastMode = !supports.BackgroundImages; body.removeChild(div); div = img = null; return supports; } }, { /** * @property ViewportUnits `true` if the device supports ViewportUnits. * @type {Boolean} * */ name: 'ViewportUnits', ready: true, fn: function(doc) { //<feature legacyBrowser> // Even attempting to detect the feature throws a fatal error on IE8 if (Ext.isIE8) { return false; } //</feature> var body = doc.body, div = document.createElement('div'), style = div.currentStyle || div.style, width, divWidth; body.appendChild(div); Ext.apply(style, {width: '50vw'}); width = parseInt(window.innerWidth / 2, 10); divWidth = parseInt((window.getComputedStyle ? getComputedStyle(div, null) : div.currentStyle).width, 10); body.removeChild(div); div = null; return width === divWidth; } }, { name: 'CSSVariables', ready: false, fn: function(doc) { //<feature legacyBrowser> // Legacy browsers do not have this method. if (!window.getComputedStyle) { return false; } //</feature> var style = window.getComputedStyle(doc.documentElement); return style.getPropertyValue && !!style.getPropertyValue('--x-supports-variables'); } }, { /** * @property Selectors2 `true` if the browser supports the CSS selector API level 2. * https://dev.w3.org/2006/webapi/selectors-api2/ * @type {Boolean} * */ name: 'Selectors2', ready: false, fn: function(doc) { try { return !!doc.querySelectorAll(':scope'); } catch (e) { return false; } } }, { /** * @property CSSScrollSnap * @private * @type {Boolean} */ name: 'CSSScrollSnap', ready: false, fn: function(doc) { var style = doc.documentElement.style; return 'scrollSnapType' in style || 'webkitScrollSnapType' in style || 'msScrollSnapType' in style; } }, /** * @property TranslateYCausesHorizontalScroll * @private * @type {Boolean} * * Bug for Edge logged here: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/9743268/ */ { name: 'TranslateYCausesHorizontalScroll', ready: true, fn: function(doc, div) { div.innerHTML = '<div style="position: relative; overflow: auto; height: 200px; width: 200px;">' + '<div>' + '<div style="transform: translateY(260px); width: 50px;">a</div>' + '</div>' + '</div>'; return div.firstChild.scrollWidth > div.firstChild.clientWidth; } }, 0] // placeholder so legacy browser detectors can come/go cleanly }; Ext.feature.tests.pop(); // remove the placeholder Ext.supports = {}; Ext.feature.detect();