From 8976bc7e3d1f03254f914297b1be1b730690d2b8 Mon Sep 17 00:00:00 2001
From: Kris Borchers <kris.borchers@gmail.com>
Date: Thu, 8 Nov 2012 12:02:25 -0600
Subject: [PATCH] Progressbar: Refactor to better handle option changes and
 sanitize values. Fixes #8785 - Progressbar: Remove _value() and always
 sanitize value option

---
 tests/unit/progressbar/progressbar_options.js | 18 ++++
 ui/jquery.ui.progressbar.js                   | 83 +++++++++++++------
 2 files changed, 76 insertions(+), 25 deletions(-)

diff --git a/tests/unit/progressbar/progressbar_options.js b/tests/unit/progressbar/progressbar_options.js
index fd5988ebdeb..e4d9b7ab8e3 100644
--- a/tests/unit/progressbar/progressbar_options.js
+++ b/tests/unit/progressbar/progressbar_options.js
@@ -60,3 +60,21 @@ test( "{ max : 5, value : 10 }", function() {
 	});
 	deepEqual( 5, $( "#progressbar" ).progressbar( "value" ) );
 });
+
+test( "{ value : 10, max : 5 }", function() {
+	expect( 1 );
+	$("#progressbar").progressbar({
+		max: 5,
+		value: 10
+	});
+	deepEqual( 5, $( "#progressbar" ).progressbar( "value" ) );
+});
+
+test( "{ max : 5 }", function() {
+	expect( 1 );
+	$("#progressbar").progressbar({
+		max: 10,
+		value: 10
+	}).progressbar( "option", "max", 5 );
+	deepEqual( 5, $( "#progressbar" ).progressbar( "value" ) );
+});
diff --git a/ui/jquery.ui.progressbar.js b/ui/jquery.ui.progressbar.js
index cb561ebc6b3..5a7fd87d37e 100644
--- a/ui/jquery.ui.progressbar.js
+++ b/ui/jquery.ui.progressbar.js
@@ -24,19 +24,22 @@ $.widget( "ui.progressbar", {
 	min: 0,
 
 	_create: function() {
+		// Constrain initial value
+		this.options.value = this._constrainedValue();
+
 		this.element
 			.addClass( "ui-progressbar ui-widget ui-widget-content ui-corner-all" )
 			.attr({
 				role: "progressbar",
 				"aria-valuemin": this.min,
 				"aria-valuemax": this.options.max,
-				"aria-valuenow": this._value()
+				"aria-valuenow": this.options.value
 			});
 
 		this.valueDiv = $( "<div class='ui-progressbar-value ui-widget-header ui-corner-left'></div>" )
 			.appendTo( this.element );
 
-		this.oldValue = this._value();
+		this.oldValue = this.options.value;
 		this._refreshValue();
 	},
 
@@ -53,52 +56,82 @@ $.widget( "ui.progressbar", {
 
 	value: function( newValue ) {
 		if ( newValue === undefined ) {
-			return this._value();
+			return this.options.value;
 		}
 
-		this._setOption( "value", newValue );
+		this._setOption( "value", this._constrainedValue( newValue ) );
 		return this;
 	},
 
-	_setOption: function( key, value ) {
-		if ( key === "value" ) {
-			this.options.value = value;
-			this._refreshValue();
-			if ( this._value() === this.options.max ) {
-				this._trigger( "complete" );
-			}
+	_constrainedValue: function( newValue ) {
+		var val;
+		if ( newValue === undefined ) {
+			val = this.options.value;
+		} else {
+			val = newValue;
 		}
 
-		this._super( key, value );
-	},
-
-	_value: function() {
-		var val = this.options.value;
-		// normalize invalid value
+		// sanitize value
 		if ( typeof val !== "number" ) {
 			val = 0;
 		}
 		return Math.min( this.options.max, Math.max( this.min, val ) );
 	},
 
+	_setOptions: function( options ) {
+		var key, val;
+
+		for ( key in options ) {
+			if ( key === "value" ) {
+				// Store value to update last in case max is being updated at the same time
+				val = options[ key ];
+			} else {
+				this._setOption( key, options[ key ] );
+			}
+		}
+
+		if ( val !== undefined ) {
+			this._setOption( "value", val );
+		}
+	},
+
+	_setOption: function( key, value ) {
+		if ( key === "max" ) {
+			// Don't allow a max less than min
+			this.options.max = Math.max( this.min, value );
+			this.options.value = this._constrainedValue();
+		}
+		if ( key === "value" ) {
+			this.options.value = this._constrainedValue( value );
+		}
+		else {
+			this._super( key, value );
+		}
+
+		this._refreshValue();
+	},
+
 	_percentage: function() {
-		return 100 * this._value() / this.options.max;
+		return 100 * this.options.value / this.options.max;
 	},
 
 	_refreshValue: function() {
-		var value = this.value(),
-			percentage = this._percentage();
+		var percentage = this._percentage();
 
-		if ( this.oldValue !== value ) {
-			this.oldValue = value;
+		if ( this.oldValue !== this.options.value ) {
+			this.oldValue = this.options.value;
 			this._trigger( "change" );
 		}
+		if ( this.options.value === this.options.max ) {
+			this._trigger( "complete" );
+		}
 
 		this.valueDiv
-			.toggle( value > this.min )
-			.toggleClass( "ui-corner-right", value === this.options.max )
+			.toggle( this.options.value > this.min )
+			.toggleClass( "ui-corner-right", this.options.value === this.options.max )
 			.width( percentage.toFixed(0) + "%" );
-		this.element.attr( "aria-valuenow", value );
+		this.element.attr( "aria-valuemax", this.options.max );
+		this.element.attr( "aria-valuenow", this.options.value );
 	}
 });