/*!
 * jQuery UI Button 1.8.23
 *
 * Copyright 2012, 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, startXPos, startYPos, clickDragged,
        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 () {
            var buttons = $(this).find(":ui-button");
            setTimeout(function () {
                buttons.button("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: {
            disabled: null,
            text: true,
            label: null,
            icons: {
                primary: null,
                secondary: null
            }
        },
        _create: function () {
            this.element.closest("form")
                .unbind("reset.button")
                .bind("reset.button", formResetHandler);

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

            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();
            }

            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("click.button", function (event) {
                    if (options.disabled) {
                        event.preventDefault();
                        event.stopImmediatePropagation();
                    }
                });

            this.element
                .bind("focus.button", function () {
                    // no need to check disabled, focus won't be triggered anyway
                    self.buttonElement.addClass(focusClass);
                })
                .bind("blur.button", function () {
                    self.buttonElement.removeClass(focusClass);
                });

            if (toggleButton) {
                this.element.bind("change.button", function () {
                    if (clickDragged) {
                        return;
                    }
                    self.refresh();
                });
                // if mouse moves between mousedown and mouseup (drag) set clickDragged flag
                // prevents issue where button state changes but checkbox/radio checked state
                // does not in Firefox (see ticket #6970)
                this.buttonElement
                    .bind("mousedown.button", function (event) {
                        if (options.disabled) {
                            return;
                        }
                        clickDragged = false;
                        startXPos = event.pageX;
                        startYPos = event.pageY;
                    })
                    .bind("mouseup.button", function (event) {
                        if (options.disabled) {
                            return;
                        }
                        if (startXPos !== event.pageX || startYPos !== event.pageY) {
                            clickDragged = true;
                        }
                    });
            }

            if (this.type === "checkbox") {
                this.buttonElement.bind("click.button", function () {
                    if (options.disabled || clickDragged) {
                        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 || clickDragged) {
                        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);
            this._resetButton();
        },

        _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
                var ancestor = this.element.parents().filter(":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");

                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.propAttr("disabled", true);
                } else {
                    this.element.propAttr("disabled", false);
                }
                return;
            }
            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>", this.element[0].ownerDocument)
                    .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", buttonText);
                    }
                }
            } else {
                buttonClasses.push("ui-button-text-only");
            }
            buttonElement.addClass(buttonClasses.join(" "));
        }
    });

    $.widget("ui.buttonset", {
        options: {
            items: ":button, :submit, :reset, :checkbox, :radio, a, :data(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);
            }

            $.Widget.prototype._setOption.apply(this, arguments);
        },

        refresh: function () {
            var rtl = this.element.css("direction") === "rtl";

            this.buttons = this.element.find(this.options.items)
                .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(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");

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

}(jQuery) );