Revert "Misc: Drop support for older browsers; update support comments"

This reverts commit 740e190223.

src/attributes/support.js

@@ -10,7 +10,7 @@ define( [
 
 	input.type = "checkbox";
 
-	// Support: Android<4.4
+	// Support: iOS<=5.1, Android<=4.2+
 	// Default value for a checkbox should be "on"
 	support.checkOn = input.value !== "";
 

src/core.js

@@ -255,7 +255,7 @@ jQuery.extend( {
 			return obj + "";
 		}
 
-		// Support: Android<4.0 (functionish RegExp)
+		// Support: Android<4.0, iOS<6 (functionish RegExp)
 		return typeof obj === "object" || typeof obj === "function" ?
 			class2type[ toString.call( obj ) ] || "object" :
 			typeof obj;
@@ -348,8 +348,6 @@ jQuery.extend( {
 		return arr == null ? -1 : indexOf.call( arr, elem, i );
 	},
 
-	// Support: Android<4.1, PhantomJS<2
-	// push.apply(_, arraylike) throws on ancient WebKit
 	merge: function( first, second ) {
 		var len = +second.length,
 			j = 0,

src/core/init.js

@@ -75,7 +75,9 @@ var rootjQuery,
 				} else {
 					elem = document.getElementById( match[ 2 ] );
 
-					if ( elem ) {
+					// Support: Blackberry 4.6
+					// gEBID returns nodes no longer in the document (#6963)
+					if ( elem && elem.parentNode ) {
 
 						// Inject the element directly into the jQuery object
 						this.length = 1;

src/css.js

@@ -36,7 +36,7 @@ var
 		fontWeight: "400"
 	},
 
-	cssPrefixes = [ "Webkit", "Moz", "ms" ],
+	cssPrefixes = [ "Webkit", "O", "Moz", "ms" ],
 	emptyStyle = document.createElement( "div" ).style;
 
 // Return a css property mapped to a potentially vendor prefixed property

src/css/curCSS.js

@@ -5,7 +5,7 @@ define( [
 	"./var/getStyles",
 	"./support",
 	"../selector" // Get jQuery.contains
-], function( jQuery, rnumnonpx, rmargin, getStyles, support ) {
+], function( jQuery, rnumnonpx, rmargin, getStyles ) {
 
 function curCSS( elem, name, computed ) {
 	var width, minWidth, maxWidth, ret,
@@ -22,12 +22,13 @@ function curCSS( elem, name, computed ) {
 			ret = jQuery.style( elem, name );
 		}
 
+		// Support: iOS < 6, Android 4.0-4.3 only
 		// A tribute to the "awesome hack by Dean Edwards"
-		// Android Browser returns percentage for some values,
+		// iOS < 6 (at least) returns percentage for a larger set of values,
-		// but width seems to be reliably pixels.
+		// but width seems to be reliably pixels
-		// This is against the CSSOM draft spec:
+		// this is against the CSSOM draft spec:
 		// http://dev.w3.org/csswg/cssom/#resolved-values
-		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+		if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
 
 			// Remember the original values
 			width = style.width;

src/css/hiddenVisibleSelectors.js

@@ -4,7 +4,12 @@ define( [
 ], function( jQuery ) {
 
 jQuery.expr.filters.hidden = function( elem ) {
-	return !jQuery.expr.filters.visible( elem );
+
+	// Support: Opera <= 12.12
+	// Opera reports offsetWidths and offsetHeights less than zero on some elements
+	// Use OR instead of AND as the element is not visible if either is true
+	// See tickets #10406 and #13132
+	return elem.offsetWidth <= 0 || elem.offsetHeight <= 0;
 };
 jQuery.expr.filters.visible = function( elem ) {
 	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );

src/css/support.js

@@ -29,10 +29,12 @@ define( [
 	// so they're executed at the same time to save the second computation.
 	function computeStyleTests() {
 		div.style.cssText =
-			"box-sizing:border-box;" +
+
-			"position:relative;display:block;" +
+			// Support: Firefox<29, Android 2.3
-			"margin:auto;border:1px;padding:1px;" +
+			// Vendor-prefix box-sizing
-			"top:1%;width:50%";
+			"-webkit-box-sizing:border-box;-moz-box-sizing:border-box;" +
+			"box-sizing:border-box;display:block;margin-top:1%;top:1%;" +
+			"border:1px;padding:1px;width:4px;position:absolute";
 		div.innerHTML = "";
 		documentElement.appendChild( container );
 

src/event.js

@@ -469,7 +469,13 @@ jQuery.event = {
 			event[ prop ] = originalEvent[ prop ];
 		}
 
-		// Support: Safari 6-8+
+		// Support: Cordova 2.5 (WebKit) (#13255)
+		// All events should have a target; Cordova deviceready doesn't
+		if ( !event.target ) {
+			event.target = document;
+		}
+
+		// Support: Safari 6.0+, Chrome<28
 		// Target should not be a text node (#504, #13143)
 		if ( event.target.nodeType === 3 ) {
 			event.target = event.target.parentNode;

src/manipulation.js

@@ -464,8 +464,8 @@ jQuery.each( {
 			elems = i === last ? this : this.clone( true );
 			jQuery( insert[ i ] )[ original ]( elems );
 
-			// Support: Android<4.1, PhantomJS<2
+			// Support: QtWebKit
-			// .get() because push.apply(_, arraylike) throws on ancient WebKit
+			// .get() because push.apply(_, arraylike) throws
 			push.apply( ret, elems.get() );
 		}
 

src/manipulation/support.js

@@ -8,7 +8,7 @@ define( [
 		div = fragment.appendChild( document.createElement( "div" ) ),
 		input = document.createElement( "input" );
 
-	// Support: Android 4.0-4.3
+	// Support: Android 4.0-4.3, Safari<=5.1
 	// Check state lost if the name is set (#11217)
 	// Support: Windows Web Apps (WWA)
 	// `name` and `type` must use .setAttribute for WWA (#14901)
@@ -18,7 +18,7 @@ define( [
 
 	div.appendChild( input );
 
-	// Support: Android<4.2
+	// Support: Safari<=5.1, Android<4.2
 	// Older WebKit doesn't clone checked state correctly in fragments
 	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
 

src/offset.js

@@ -98,7 +98,11 @@ jQuery.fn.extend( {
 			return box;
 		}
 
+		// Support: BlackBerry 5, iOS 3 (original iPhone)
+		// If we don't have gBCR, just use 0,0 rather than error
+		if ( elem.getBoundingClientRect ) {
 			box = elem.getBoundingClientRect();
+		}
 		win = getWindow( doc );
 		return {
 			top: box.top + win.pageYOffset - docElem.clientTop,

test/unit/css.js

@@ -293,6 +293,9 @@ QUnit.test( "css(String, Object)", function( assert ) {
 	j = jQuery( "#nonnodes" ).contents();
 	j.css( "overflow", "visible" );
 	assert.equal( j.css( "overflow" ), "visible", "Check node,textnode,comment css works" );
+
+	// Opera sometimes doesn't update 'display' correctly, see #2037
+	jQuery( "#t2037" )[ 0 ].innerHTML = jQuery( "#t2037" )[ 0 ].innerHTML;
 	assert.equal( jQuery( "#t2037 .hidden" ).css( "display" ), "none", "Make sure browser thinks it is hidden" );
 
 	div = jQuery( "#nothiddendiv" );
@@ -867,9 +870,9 @@ QUnit.test( "Do not append px (#9548, #12990)", function( assert ) {
 QUnit.test( "css('width') and css('height') should respect box-sizing, see #11004", function( assert ) {
 	assert.expect( 4 );
 
-	// Support: Android 2.3 (-webkit-box-sizing).
+	// Support: Firefox<29, Android 2.3 (Prefixed box-sizing versions).
-	var el_dis = jQuery( "<div style='width:300px;height:300px;margin:2px;padding:2px;-webkit-box-sizing:border-box;box-sizing:border-box;'>test</div>" ),
+	var el_dis = jQuery("<div style='width:300px;height:300px;margin:2px;padding:2px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;'>test</div>"),
-		el = el_dis.clone().appendTo( "#qunit-fixture" );
+		el = el_dis.clone().appendTo("#qunit-fixture");
 
 	assert.equal( el.css( "width" ), el.css( "width", el.css( "width" ) ).css( "width" ), "css('width') is not respecting box-sizing, see #11004" );
 	assert.equal( el_dis.css( "width" ), el_dis.css( "width", el_dis.css( "width" ) ).css( "width" ), "css('width') is not respecting box-sizing for disconnected element, see #11004" );

test/unit/dimensions.js

@@ -409,9 +409,10 @@ QUnit.test( "getters on non elements should return null", function( assert ) {
 QUnit.test( "setters with and without box-sizing:border-box", function( assert ) {
 	assert.expect( 60 );
 
+	// Support: Firefox<29, Android 2.3 (Prefixed box-sizing versions).
 	var parent = jQuery( "#foo" ).css( { width: "200px", height: "200px", "font-size": "16px" } ),
-		el_bb = jQuery( "<div style='margin:5px;padding:1px;border:2px solid black;box-sizing:border-box;'></div>" ).appendTo( parent ),
+		el_bb = jQuery( "<div style='width:114px;height:114px;margin:5px;padding:3px;border:4px solid white;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;'>test</div>" ).appendTo( parent ),
-		el = jQuery( "<div style='margin:5px;padding:1px;border:2px solid black;'></div>" ).appendTo( parent );
+		el = jQuery( "<div style='width:100px;height:100px;margin:5px;padding:3px;border:4px solid white;'>test</div>" ).appendTo( parent );
 
 	jQuery.each( {
 		"number": { set: 100, expected: 100 },

test/unit/event.js

@@ -1416,7 +1416,7 @@ QUnit.test( "Submit event can be stopped (#11049)", function( assert ) {
 	form.remove();
 } );
 
-// Test beforeunload event only if it supported.
+// Test beforeunload event only if it supported (i.e. not Opera)
 // Support: iOS 7+, Android<4.0
 // iOS & old Android have the window.onbeforeunload field but don't support the beforeunload
 // handler making it impossible to feature-detect the support.
@@ -2520,14 +2520,15 @@ testIframeWithCallback(
 
 		var input = jQuery( frameDoc ).find( "#frame-input" );
 
+	if ( input.length ) {
 		// Create a focusin handler on the parent; shouldn't affect the iframe's fate
-		jQuery( "body" ).on( "focusin.iframeTest", function() {
+		jQuery ( "body" ).on( "focusin.iframeTest", function() {
 			assert.ok( false, "fired a focusin event in the parent document" );
-		} );
+		});
 
 		input.on( "focusin", function() {
 			assert.ok( true, "fired a focusin event in the iframe" );
-		} );
+		});
 
 		// Avoid a native event; Chrome can't force focus to another frame
 		input.trigger( "focusin" );
@@ -2540,8 +2541,12 @@ testIframeWithCallback(
 
 		// Remove body handler manually since it's outside the fixture
 		jQuery( "body" ).off( "focusin.iframeTest" );
+
+	} else {
+		// Opera 12 (pre-Blink) doesn't select anything
+		assert.ok( true, "SOFTFAIL: no focus event fired in the iframe" );
 	}
-);
+});
 
 testIframeWithCallback(
 	"jQuery.ready promise",

test/unit/support.js

@@ -73,6 +73,23 @@ testIframeWithCallback(
 			"radioValue": true,
 			"reliableMarginLeft": true
 		};
+	} else if ( /opera.*version\/12\.1/i.test( userAgent ) ) {
+		expected = {
+			"ajax": true,
+			"boxSizingReliable": true,
+			"checkClone": true,
+			"checkOn": true,
+			"clearCloneStyle": true,
+			"cors": true,
+			"createHTMLDocument": true,
+			"focusin": false,
+			"noCloneChecked": true,
+			"optSelected": true,
+			"pixelMarginRight": true,
+			"pixelPosition": true,
+			"radioValue": false,
+			"reliableMarginLeft": false
+		};
 	} else if ( /(msie 10\.0|trident\/7\.0)/i.test( userAgent ) ) {
 		expected = {
 			"ajax": true,
@@ -161,6 +178,22 @@ testIframeWithCallback(
 			"radioValue": true,
 			"reliableMarginLeft": true
 		};
+	} else if ( /5\.1(\.\d+|) safari/i.test( userAgent ) ) {
+		expected = {
+			"ajax": true,
+			"boxSizingReliable": true,
+			"checkClone": false,
+			"checkOn": false,
+			"clearCloneStyle": true,
+			"cors": true,
+			"focusinBubbles": false,
+			"noCloneChecked": true,
+			"optDisabled": true,
+			"optSelected": true,
+			"pixelPosition": false,
+			"radioValue": true,
+			"reliableMarginRight": true
+		};
 	} else if ( /firefox/i.test( userAgent ) ) {
 		expected = {
 			"ajax": true,
@@ -212,7 +245,7 @@ testIframeWithCallback(
 			"radioValue": true,
 			"reliableMarginLeft": true
 		};
-	} else if ( /iphone os 7_/i.test( userAgent ) ) {
+	} else if ( /iphone os (?:6|7)_/i.test( userAgent ) ) {
 		expected = {
 			"ajax": true,
 			"boxSizingReliable": true,