/*
 * jQuery UI Button 1.8.4
 *
 * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Button
 *
 * Depends:
 *    jquery.ui.core.js
 *    jquery.ui.widget.js
 */
(function( $, undefined ) {

var lastActive,
    baseClasses = "ui-button ui-widget ui-state-default ui-corner-all",
    stateClasses = "ui-state-hover ui-state-active ",
    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( event ) {
        $( ":ui-button", event.target.form ).each(function() {
            var inst = $( this ).data( "button" );
            setTimeout(function() {
                inst.refresh();
            }, 1 );
        });
    },
    radioGroup = function( radio ) {
        var name = radio.name,
            form = radio.form,
            radios = $( [] );
        if ( name ) {
            if ( form ) {
                radios = $( form ).find( "[name='" + name + "']" );
            } else {
                radios = $( "[name='" + name + "']", radio.ownerDocument )
                    .filter(function() {
                        return !this.form;
                    });
            }
        }
        return radios;
    };

$.widget( "ui.button", {
    options: {
        text: true,
        label: null,
        icons: {
            primary: null,
            secondary: null
        }
    },
    _create: function() {
        this.element.closest( "form" )
            .unbind( "reset.button" )
            .bind( "reset.button", formResetHandler );

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

        var self = this,
            options = this.options,
            toggleButton = this.type === "checkbox" || this.type === "radio",
            hoverClass = "ui-state-hover" + ( !toggleButton ? " ui-state-active" : "" ),
            focusClass = "ui-state-focus";

        if ( options.label === null ) {
            options.label = this.buttonElement.html();
        }

        if ( this.element.is( ":disabled" ) ) {
            options.disabled = true;
        }

        this.buttonElement
            .addClass( baseClasses )
            .attr( "role", "button" )
            .bind( "mouseenter.button", function() {
                if ( options.disabled ) {
                    return;
                }
                $( this ).addClass( "ui-state-hover" );
                if ( this === lastActive ) {
                    $( this ).addClass( "ui-state-active" );
                }
            })
            .bind( "mouseleave.button", function() {
                if ( options.disabled ) {
                    return;
                }
                $( this ).removeClass( hoverClass );
            })
            .bind( "focus.button", function() {
                // no need to check disabled, focus won't be triggered anyway
                $( this ).addClass( focusClass );
            })
            .bind( "blur.button", function() {
                $( this ).removeClass( focusClass );
            });

        if ( toggleButton ) {
            this.element.bind( "change.button", function() {
                self.refresh();
            });
        }

        if ( this.type === "checkbox" ) {
            this.buttonElement.bind( "click.button", function() {
                if ( options.disabled ) {
                    return false;
                }
                $( this ).toggleClass( "ui-state-active" );
                self.buttonElement.attr( "aria-pressed", self.element[0].checked );
            });
        } else if ( this.type === "radio" ) {
            this.buttonElement.bind( "click.button", function() {
                if ( options.disabled ) {
                    return false;
                }
                $( this ).addClass( "ui-state-active" );
                self.buttonElement.attr( "aria-pressed", true );

                var radio = self.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.button", function() {
                    if ( options.disabled ) {
                        return false;
                    }
                    $( this ).addClass( "ui-state-active" );
                    lastActive = this;
                    $( document ).one( "mouseup", function() {
                        lastActive = null;
                    });
                })
                .bind( "mouseup.button", function() {
                    if ( options.disabled ) {
                        return false;
                    }
                    $( this ).removeClass( "ui-state-active" );
                })
                .bind( "keydown.button", function(event) {
                    if ( options.disabled ) {
                        return false;
                    }
                    if ( event.keyCode == $.ui.keyCode.SPACE || event.keyCode == $.ui.keyCode.ENTER ) {
                        $( this ).addClass( "ui-state-active" );
                    }
                })
                .bind( "keyup.button", 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();
                    }
                });
            }
        }

        // TODO: pull out $.Widget's handling for the disabled option into
        // $.Widget.prototype._setOptionDisabled so it's easy to proxy and can
        // be overridden by individual plugins
        this._setOption( "disabled", options.disabled );
    },

    _determineButtonType: function() {
        
        if ( this.element.is(":checkbox") ) {
            this.type = "checkbox";
        } else {
            if ( this.element.is(":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
            this.buttonElement = this.element.parents().last()
                .find( "label[for=" + this.element.attr("id") + "]" );
            this.element.addClass( "ui-helper-hidden-accessible" );

            var checked = this.element.is( ":checked" );
            if ( checked ) {
                this.buttonElement.addClass( "ui-state-active" );
            }
            this.buttonElement.attr( "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 + " " + stateClasses + " " + typeClasses )
            .removeAttr( "role" )
            .removeAttr( "aria-pressed" )
            .html( this.buttonElement.find(".ui-button-text").html() );

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

        $.Widget.prototype.destroy.call( this );
    },

    _setOption: function( key, value ) {
        $.Widget.prototype._setOption.apply( this, arguments );
        if ( key === "disabled" ) {
            if ( value ) {
                this.element.attr( "disabled", true );
            } else {
                this.element.removeAttr( "disabled" );
            }
        }
        this._resetButton();
    },

    refresh: function() {
        var isDisabled = this.element.is( ":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>" )
                .addClass( "ui-button-text" )
                .html( this.options.label )
                .appendTo( buttonElement.empty() )
                .text(),
            icons = this.options.icons,
            multipleIcons = icons.primary && icons.secondary;
        if ( icons.primary || icons.secondary ) {
            buttonElement.addClass( "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 ) {
                buttonElement
                    .addClass( multipleIcons ? "ui-button-icons-only" : "ui-button-icon-only" )
                    .removeClass( "ui-button-text-icons ui-button-text-icon-primary ui-button-text-icon-secondary" );
                if ( !this.hasTitle ) {
                    buttonElement.attr( "title", buttonText );
                }
            }
        } else {
            buttonElement.addClass( "ui-button-text-only" );
        }
    }
});

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

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

        $.Widget.prototype._setOption.apply( this, arguments );
    },
    
    refresh: function() {
        this.buttons = this.element.find( ":button, :submit, :reset, :checkbox, :radio, a, :data(button)" )
            .filter( ":ui-button" )
                .button( "refresh" )
            .end()
            .not( ":ui-button" )
                .button()
            .end()
            .map(function() {
                return $( this ).button( "widget" )[ 0 ];
            })
                .removeClass( "ui-corner-all ui-corner-left ui-corner-right" )
                .filter( ":first" )
                    .addClass( "ui-corner-left" )
                .end()
                .filter( ":last" )
                    .addClass( "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" );

        $.Widget.prototype.destroy.call( this );
    }
});

}( jQuery ) );