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File Content: `button.js`

/*!
 * jQuery UI Button @VERSION
 * http://jqueryui.com
 *
 * Copyright 2014 jQuery Foundation and other contributors
 * Released under the MIT license.
 * http://jquery.org/license
 *
 * http://api.jqueryui.com/button/
 */
(function( factory ) {
    if ( typeof define === "function" && define.amd ) {

        // AMD. Register as an anonymous module.
        define([
            "jquery",
            "./core",
            "./widget"
        ], factory );
    } else {

        // Browser globals
        factory( jQuery );
    }
}(function( $ ) {

    var lastActive,
        baseClasses = "ui-button ui-widget ui-state-default ui-corner-all",
        typeClasses = "ui-button-icons-only ui-button-icon-only ui-button-text-icons ui-button-text-icon-primary ui-button-text-icon-secondary ui-button-text-only",
        formResetHandler = function() {
            var form = $( this );
            setTimeout(function() {
                form.find( ":ui-button" ).button( "refresh" );
            }, 1 );
        },
        radioGroup = function( radio ) {
            var name = radio.name,
                form = radio.form,
                radios = $( [] );
            if ( name ) {
                name = name.replace( /'/g, "\\'" );
                if ( form ) {
                    radios = $( form ).find( "[name='" + name + "'][type=radio]" );
                } else {
                    radios = $( "[name='" + name + "'][type=radio]", radio.ownerDocument )
                        .filter(function() {
                            return !this.form;
                        });
                }
            }
            return radios;
        };

    $.widget( "ui.button", {
        version: "@VERSION",
        defaultElement: "<button>",
        options: {
            disabled: null,
            text: true,
            label: null,
            icons: {
                primary: null,
                secondary: null
            }
        },
        _create: function() {
            this.element.closest( "form" )
                .unbind( "reset" + this.eventNamespace )
                .bind( "reset" + this.eventNamespace, formResetHandler );

            if ( typeof this.options.disabled !== "boolean" ) {
                this.options.disabled = !!this.element.prop( "disabled" );
            } else {
                this.element.prop( "disabled", this.options.disabled );
            }

            this._determineButtonType();
            this.hasTitle = !!this.buttonElement.attr( "title" );

            var that = this,
                options = this.options,
                toggleButton = this.type === "checkbox" || this.type === "radio",
                activeClass = !toggleButton ? "ui-state-active" : "";

            if ( options.label === null ) {
                options.label = (this.type === "input" ? this.buttonElement.val() : this.buttonElement.html());
            }

            this._hoverable( this.buttonElement );

            this.buttonElement
                .addClass( baseClasses )
                .attr( "role", "button" )
                .bind( "mouseenter" + this.eventNamespace, function() {
                    if ( options.disabled ) {
                        return;
                    }
                    if ( this === lastActive ) {
                        $( this ).addClass( "ui-state-active" );
                    }
                })
                .bind( "mouseleave" + this.eventNamespace, function() {
                    if ( options.disabled ) {
                        return;
                    }
                    $( this ).removeClass( activeClass );
                })
                .bind( "click" + this.eventNamespace, function( event ) {
                    if ( options.disabled ) {
                        event.preventDefault();
                        event.stopImmediatePropagation();
                    }
                });

            // Can't use _focusable() because the element that receives focus
            // and the element that gets the ui-state-focus class are different
            this._on({
                focus: function() {
                    this.buttonElement.addClass( "ui-state-focus" );
                },
                blur: function() {
                    this.buttonElement.removeClass( "ui-state-focus" );
                }
            });

            if ( toggleButton ) {
                this.element.bind( "change" + this.eventNamespace, function() {
                    that.refresh();
                });
            }

            if ( this.type === "checkbox" ) {
                this.buttonElement.bind( "click" + this.eventNamespace, function() {
                    if ( options.disabled ) {
                        return false;
                    }
                });
            } else if ( this.type === "radio" ) {
                this.buttonElement.bind( "click" + this.eventNamespace, function() {
                    if ( options.disabled ) {
                        return false;
                    }
                    $( this ).addClass( "ui-state-active" );
                    that.buttonElement.attr( "aria-pressed", "true" );

                    var radio = that.element[ 0 ];
                    radioGroup( radio )
                        .not( radio )
                        .map(function() {
                            return $( this ).button( "widget" )[ 0 ];
                        })
                        .removeClass( "ui-state-active" )
                        .attr( "aria-pressed", "false" );
                });
            } else {
                this.buttonElement
                    .bind( "mousedown" + this.eventNamespace, function() {
                        if ( options.disabled ) {
                            return false;
                        }
                        $( this ).addClass( "ui-state-active" );
                        lastActive = this;
                        that.document.one( "mouseup", function() {
                            lastActive = null;
                        });
                    })
                    .bind( "mouseup" + this.eventNamespace, function() {
                        if ( options.disabled ) {
                            return false;
                        }
                        $( this ).removeClass( "ui-state-active" );
                    })
                    .bind( "keydown" + this.eventNamespace, function(event) {
                        if ( options.disabled ) {
                            return false;
                        }
                        if ( event.keyCode === $.ui.keyCode.SPACE || event.keyCode === $.ui.keyCode.ENTER ) {
                            $( this ).addClass( "ui-state-active" );
                        }
                    })
                    // see #8559, we bind to blur here in case the button element loses
                    // focus between keydown and keyup, it would be left in an "active" state
                    .bind( "keyup" + this.eventNamespace + " blur" + this.eventNamespace, function() {
                        $( this ).removeClass( "ui-state-active" );
                    });

                if ( this.buttonElement.is("a") ) {
                    this.buttonElement.keyup(function(event) {
                        if ( event.keyCode === $.ui.keyCode.SPACE ) {
                            // TODO pass through original event correctly (just as 2nd argument doesn't work)
                            $( this ).click();
                        }
                    });
                }
            }

            this._setOption( "disabled", options.disabled );
            this._resetButton();
        },

        _determineButtonType: function() {
            var ancestor, labelSelector, checked;

            if ( this.element.is("[type=checkbox]") ) {
                this.type = "checkbox";
            } else if ( this.element.is("[type=radio]") ) {
                this.type = "radio";
            } else if ( this.element.is("input") ) {
                this.type = "input";
            } else {
                this.type = "button";
            }

            if ( this.type === "checkbox" || this.type === "radio" ) {
                // we don't search against the document in case the element
                // is disconnected from the DOM
                ancestor = this.element.parents().last();
                labelSelector = "label[for='" + this.element.attr("id") + "']";
                this.buttonElement = ancestor.find( labelSelector );
                if ( !this.buttonElement.length ) {
                    ancestor = ancestor.length ? ancestor.siblings() : this.element.siblings();
                    this.buttonElement = ancestor.filter( labelSelector );
                    if ( !this.buttonElement.length ) {
                        this.buttonElement = ancestor.find( labelSelector );
                    }
                }
                this.element.addClass( "ui-helper-hidden-accessible" );

                checked = this.element.is( ":checked" );
                if ( checked ) {
                    this.buttonElement.addClass( "ui-state-active" );
                }
                this.buttonElement.prop( "aria-pressed", checked );
            } else {
                this.buttonElement = this.element;
            }
        },

        widget: function() {
            return this.buttonElement;
        },

        _destroy: function() {
            this.element
                .removeClass( "ui-helper-hidden-accessible" );
            this.buttonElement
                .removeClass( baseClasses + " ui-state-active " + typeClasses )
                .removeAttr( "role" )
                .removeAttr( "aria-pressed" )
                .html( this.buttonElement.find(".ui-button-text").html() );

            if ( !this.hasTitle ) {
                this.buttonElement.removeAttr( "title" );
            }
        },

        _setOption: function( key, value ) {
            this._super( key, value );
            if ( key === "disabled" ) {
                this.widget().toggleClass( "ui-state-disabled", !!value );
                this.element.prop( "disabled", !!value );
                if ( value ) {
                    if ( this.type === "checkbox" || this.type === "radio" ) {
                        this.buttonElement.removeClass( "ui-state-focus" );
                    } else {
                        this.buttonElement.removeClass( "ui-state-focus ui-state-active" );
                    }
                }
                return;
            }
            this._resetButton();
        },

        refresh: function() {
            //See #8237 & #8828
            var isDisabled = this.element.is( "input, button" ) ? this.element.is( ":disabled" ) : this.element.hasClass( "ui-button-disabled" );

            if ( isDisabled !== this.options.disabled ) {
                this._setOption( "disabled", isDisabled );
            }
            if ( this.type === "radio" ) {
                radioGroup( this.element[0] ).each(function() {
                    if ( $( this ).is( ":checked" ) ) {
                        $( this ).button( "widget" )
                            .addClass( "ui-state-active" )
                            .attr( "aria-pressed", "true" );
                    } else {
                        $( this ).button( "widget" )
                            .removeClass( "ui-state-active" )
                            .attr( "aria-pressed", "false" );
                    }
                });
            } else if ( this.type === "checkbox" ) {
                if ( this.element.is( ":checked" ) ) {
                    this.buttonElement
                        .addClass( "ui-state-active" )
                        .attr( "aria-pressed", "true" );
                } else {
                    this.buttonElement
                        .removeClass( "ui-state-active" )
                        .attr( "aria-pressed", "false" );
                }
            }
        },

        _resetButton: function() {
            if ( this.type === "input" ) {
                if ( this.options.label ) {
                    this.element.val( this.options.label );
                }
                return;
            }
            var buttonElement = this.buttonElement.removeClass( typeClasses ),
                buttonText = $( "<span></span>", this.document[0] )
                    .addClass( "ui-button-text" )
                    .html( this.options.label )
                    .appendTo( buttonElement.empty() )
                    .text(),
                icons = this.options.icons,
                multipleIcons = icons.primary && icons.secondary,
                buttonClasses = [];

            if ( icons.primary || icons.secondary ) {
                if ( this.options.text ) {
                    buttonClasses.push( "ui-button-text-icon" + ( multipleIcons ? "s" : ( icons.primary ? "-primary" : "-secondary" ) ) );
                }

                if ( icons.primary ) {
                    buttonElement.prepend( "<span class='ui-button-icon-primary ui-icon " + icons.primary + "'></span>" );
                }

                if ( icons.secondary ) {
                    buttonElement.append( "<span class='ui-button-icon-secondary ui-icon " + icons.secondary + "'></span>" );
                }

                if ( !this.options.text ) {
                    buttonClasses.push( multipleIcons ? "ui-button-icons-only" : "ui-button-icon-only" );

                    if ( !this.hasTitle ) {
                        buttonElement.attr( "title", $.trim( buttonText ) );
                    }
                }
            } else {
                buttonClasses.push( "ui-button-text-only" );
            }
            buttonElement.addClass( buttonClasses.join( " " ) );
        }
    });

    $.widget( "ui.buttonset", {
        version: "@VERSION",
        options: {
            items: "button, input[type=button], input[type=submit], input[type=reset], input[type=checkbox], input[type=radio], a, :data(ui-button)"
        },

        _create: function() {
            this.element.addClass( "ui-buttonset" );
        },

        _init: function() {
            this.refresh();
        },

        _setOption: function( key, value ) {
            if ( key === "disabled" ) {
                this.buttons.button( "option", key, value );
            }

            this._super( key, value );
        },

        refresh: function() {
            var rtl = this.element.css( "direction" ) === "rtl",
                allButtons = this.element.find( this.options.items ),
                existingButtons = allButtons.filter( ":ui-button" );

            // Initialize new buttons
            allButtons.not( ":ui-button" ).button();

            // Refresh existing buttons
            existingButtons.button( "refresh" );

            this.buttons = allButtons
                .map(function() {
                    return $( this ).button( "widget" )[ 0 ];
                })
                .removeClass( "ui-corner-all ui-corner-left ui-corner-right" )
                .filter( ":first" )
                .addClass( rtl ? "ui-corner-right" : "ui-corner-left" )
                .end()
                .filter( ":last" )
                .addClass( rtl ? "ui-corner-left" : "ui-corner-right" )
                .end()
                .end();
        },

        _destroy: function() {
            this.element.removeClass( "ui-buttonset" );
            this.buttons
                .map(function() {
                    return $( this ).button( "widget" )[ 0 ];
                })
                .removeClass( "ui-corner-left ui-corner-right" )
                .end()
                .button( "destroy" );
        }
    });

    return $.ui.button;

}));
File Content: button.js

File Content: `button.js`
