/*
 * jQuery UI Dialog @VERSION
 *
 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT (MIT-LICENSE.txt)
 * and GPL (GPL-LICENSE.txt) licenses.
 *
 * http://docs.jquery.com/UI/Dialog
 *
 * Depends:
 *      jquery.ui.core.js
 *      jquery.ui.draggable.js
 *      jquery.ui.position.js
 *      jquery.ui.resizable.js
 */
(function($) {

var setDataSwitch = {
                maxHeight: "maxHeight.resizable",
                maxWidth: "maxWidth.resizable",
                minWidth: "minWidth.resizable"
        },
        
        uiDialogClasses =
                'ui-dialog ' +
                'ui-widget ' +
                'ui-widget-content ' +
                'ui-corner-all ';

$.widget("ui.dialog", {

        _init: function() {
                this.originalTitle = this.element.attr('title');

                var self = this,
                        options = self.options,

                        title = options.title || self.originalTitle || ' ',
                        titleId = $.ui.dialog.getTitleId(self.element),

                        uiDialog = (self.uiDialog = $('<div></div>'))
                                .appendTo(document.body)
                                .hide()
                                .addClass(uiDialogClasses + options.dialogClass)
                                .css({
                                        zIndex: options.zIndex
                                })
                                // setting tabIndex makes the div focusable
                                // setting outline to 0 prevents a border on focus in Mozilla
                                .attr('tabIndex', -1).css('outline', 0).keydown(function(event) {
                                        (options.closeOnEscape && event.keyCode
                                                && event.keyCode == $.ui.keyCode.ESCAPE && self.close(event));
                                })
                                .attr({
                                        role: 'dialog',
                                        'aria-labelledby': titleId
                                })
                                .mousedown(function(event) {
                                        self.moveToTop(false, event);
                                }),

                        uiDialogContent = self.element
                                .show()
                                .removeAttr('title')
                                .addClass(
                                        'ui-dialog-content ' +
                                        'ui-widget-content')
                                .appendTo(uiDialog),

                        uiDialogTitlebar = (self.uiDialogTitlebar = $('<div></div>'))
                                .addClass(
                                        'ui-dialog-titlebar ' +
                                        'ui-widget-header ' +
                                        'ui-corner-all ' +
                                        'ui-helper-clearfix'
                                )
                                .prependTo(uiDialog),

                        uiDialogTitlebarClose = $('<a href="#"></a>')
                                .addClass(
                                        'ui-dialog-titlebar-close ' +
                                        'ui-corner-all'
                                )
                                .attr('role', 'button')
                                .hover(
                                        function() {
                                                uiDialogTitlebarClose.addClass('ui-state-hover');
                                        },
                                        function() {
                                                uiDialogTitlebarClose.removeClass('ui-state-hover');
                                        }
                                )
                                .focus(function() {
                                        uiDialogTitlebarClose.addClass('ui-state-focus');
                                })
                                .blur(function() {
                                        uiDialogTitlebarClose.removeClass('ui-state-focus');
                                })
                                .mousedown(function(ev) {
                                        ev.stopPropagation();
                                })
                                .click(function(event) {
                                        self.close(event);
                                        return false;
                                })
                                .appendTo(uiDialogTitlebar),

                        uiDialogTitlebarCloseText = (self.uiDialogTitlebarCloseText = $('<span></span>'))
                                .addClass(
                                        'ui-icon ' +
                                        'ui-icon-closethick'
                                )
                                .text(options.closeText)
                                .appendTo(uiDialogTitlebarClose),

                        uiDialogTitle = $('<span></span>')
                                .addClass('ui-dialog-title')
                                .attr('id', titleId)
                                .html(title)
                                .prependTo(uiDialogTitlebar);

                uiDialogTitlebar.find("*").add(uiDialogTitlebar).disableSelection();

                (options.draggable && $.fn.draggable && self._makeDraggable());
                (options.resizable && $.fn.resizable && self._makeResizable());

                self._createButtons(options.buttons);
                self._isOpen = false;

                (options.stackfix && $.fn.stackfix && uiDialog.stackfix());
                (options.autoOpen && self.open());
        },

        destroy: function() {
                var self = this;
                
                (self.overlay && self.overlay.destroy());
                self.uiDialog.hide();
                self.element
                        .unbind('.dialog')
                        .removeData('dialog')
                        .removeClass('ui-dialog-content ui-widget-content')
                        .hide().appendTo('body');
                self.uiDialog.remove();

                (self.originalTitle && self.element.attr('title', self.originalTitle));

                return self;
        },

        close: function(event) {
                var self = this;
                
                if (false === self._trigger('beforeClose', event)) {
                        return;
                }

                (self.overlay && self.overlay.destroy());
                self.uiDialog.unbind('keypress.ui-dialog');

                (self.options.hide
                        ? self.uiDialog.hide(self.options.hide, function() {
                                self._trigger('close', event);
                        })
                        : self.uiDialog.hide() && self._trigger('close', event));

                $.ui.dialog.overlay.resize();

                self._isOpen = false;

                // adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
                if (self.options.modal) {
                        var maxZ = 0;
                        $('.ui-dialog').each(function() {
                                if (this != self.uiDialog[0]) {
                                        maxZ = Math.max(maxZ, $(this).css('z-index'));
                                }
                        });
                        $.ui.dialog.maxZ = maxZ;
                }

                return self;
        },

        isOpen: function() {
                return this._isOpen;
        },

        // the force parameter allows us to move modal dialogs to their correct
        // position on open
        moveToTop: function(force, event) {
                var self = this,
                        options = self.options;
                
                if ((options.modal && !force)
                        || (!options.stack && !options.modal)) {
                        return self._trigger('focus', event);
                }
                
                if (options.zIndex > $.ui.dialog.maxZ) {
                        $.ui.dialog.maxZ = options.zIndex;
                }
                (self.overlay && self.overlay.$el.css('z-index', $.ui.dialog.overlay.maxZ = ++$.ui.dialog.maxZ));

                //Save and then restore scroll since Opera 9.5+ resets when parent z-Index is changed.
                //  http://ui.jquery.com/bugs/ticket/3193
                var saveScroll = { scrollTop: self.element.attr('scrollTop'), scrollLeft: self.element.attr('scrollLeft') };
                self.uiDialog.css('z-index', ++$.ui.dialog.maxZ);
                self.element.attr(saveScroll);
                self._trigger('focus', event);

                return self;
        },

        open: function() {
                if (this._isOpen) { return; }

                var self = this,
                        options = self.options,
                        uiDialog = self.uiDialog;

                self.overlay = options.modal ? new $.ui.dialog.overlay(self) : null;
                (uiDialog.next().length && uiDialog.appendTo('body'));
                self._size();
                self._position(options.position);
                uiDialog.show(options.show);
                self.moveToTop(true);

                // prevent tabbing out of modal dialogs
                (options.modal && uiDialog.bind('keypress.ui-dialog', function(event) {
                        if (event.keyCode != $.ui.keyCode.TAB) {
                                return;
                        }

                        var tabbables = $(':tabbable', this),
                                first = tabbables.filter(':first'),
                                last  = tabbables.filter(':last');

                        if (event.target == last[0] && !event.shiftKey) {
                                first.focus(1);
                                return false;
                        } else if (event.target == first[0] && event.shiftKey) {
                                last.focus(1);
                                return false;
                        }
                }));

                // set focus to the first tabbable element in the content area or the first button
                // if there are no tabbable elements, set focus on the dialog itself
                $([])
                        .add(uiDialog.find('.ui-dialog-content :tabbable:first'))
                        .add(uiDialog.find('.ui-dialog-buttonpane :tabbable:first'))
                        .add(uiDialog)
                        .filter(':first')
                        .focus();

                self._trigger('open');
                self._isOpen = true;

                return self;
        },

        _createButtons: function(buttons) {
                var self = this,
                        hasButtons = false,
                        uiDialogButtonPane = $('<div></div>')
                                .addClass(
                                        'ui-dialog-buttonpane ' +
                                        'ui-widget-content ' +
                                        'ui-helper-clearfix'
                                );

                // if we already have a button pane, remove it
                self.uiDialog.find('.ui-dialog-buttonpane').remove();

                (typeof buttons == 'object' && buttons !== null &&
                        $.each(buttons, function() { return !(hasButtons = true); }));
                if (hasButtons) {
                        $.each(buttons, function(name, fn) {
                                $('<button type="button"></button>')
                                        .addClass(
                                                'ui-state-default ' +
                                                'ui-corner-all'
                                        )
                                        .text(name)
                                        .click(function() { fn.apply(self.element[0], arguments); })
                                        .hover(
                                                function() {
                                                        $(this).addClass('ui-state-hover');
                                                },
                                                function() {
                                                        $(this).removeClass('ui-state-hover');
                                                }
                                        )
                                        .focus(function() {
                                                $(this).addClass('ui-state-focus');
                                        })
                                        .blur(function() {
                                                $(this).removeClass('ui-state-focus');
                                        })
                                        .appendTo(uiDialogButtonPane);
                        });
                        uiDialogButtonPane.appendTo(self.uiDialog);
                }
        },

        _makeDraggable: function() {
                var self = this,
                        options = self.options,
                        doc = $(document),
                        heightBeforeDrag;

                self.uiDialog.draggable({
                        cancel: '.ui-dialog-content',
                        handle: '.ui-dialog-titlebar',
                        containment: 'document',
                        start: function(event) {
                                heightBeforeDrag = options.height;
                                $(this).height($(this).height()).addClass("ui-dialog-dragging");
                                self._trigger('dragStart', event);
                        },
                        drag: function(event) {
                                self._trigger('drag', event);
                        },
                        stop: function(event, ui) {
                                options.position = [ui.position.left - doc.scrollLeft(),
                                        ui.position.top - doc.scrollTop()];
                                $(this).removeClass("ui-dialog-dragging").height(heightBeforeDrag);
                                self._trigger('dragStop', event);
                                $.ui.dialog.overlay.resize();
                        }
                });
        },

        _makeResizable: function(handles) {
                handles = (handles === undefined ? this.options.resizable : handles);
                var self = this,
                        options = self.options,
                        resizeHandles = typeof handles == 'string'
                                ? handles
                                : 'n,e,s,w,se,sw,ne,nw';

                self.uiDialog.resizable({
                        cancel: '.ui-dialog-content',
                        containment: 'document',
                        alsoResize: self.element,
                        maxWidth: options.maxWidth,
                        maxHeight: options.maxHeight,
                        minWidth: options.minWidth,
                        minHeight: self._minHeight(),
                        handles: resizeHandles,
                        start: function(event) {
                                $(this).addClass("ui-dialog-resizing");
                                self._trigger('resizeStart', event);
                        },
                        resize: function(event) {
                                self._trigger('resize', event);
                        },
                        stop: function(event) {
                                $(this).removeClass("ui-dialog-resizing");
                                options.height = $(this).height();
                                options.width = $(this).width();
                                self._trigger('resizeStop', event);
                                $.ui.dialog.overlay.resize();
                        }
                })
                .find('.ui-resizable-se').addClass('ui-icon ui-icon-grip-diagonal-se');
        },

        _minHeight: function() {
                var options = this.options;

                return (options.height == 'auto'
                        ? options.minHeight
                        : Math.min(options.minHeight, options.height));
        },

        _position: function(position) {
                var myAt = [],
                        offset = [0, 0];

                position = position || $.ui.dialog.defaults.position;

                // deep extending converts arrays to objects in jQuery <= 1.3.2 :-(
//              if (typeof position == 'string' || $.isArray(position)) {
//                      myAt = $.isArray(position) ? position : position.split(' ');

                if (typeof position == 'string' || (typeof position == 'object' && '0' in position)) {
                        myAt = position.split ? position.split(' ') : [position[0], position[1]];
                        if (myAt.length == 1) {
                                myAt[1] = myAt[0];
                        }

                        $.each(['left', 'top'], function(i, offsetPosition) {
                                if (+myAt[i] == myAt[i]) {
                                        offset[i] = myAt[i];
                                        myAt[i] = offsetPosition;
                                }
                        });
                } else if (typeof position == 'object') {
                        if ('left' in position) {
                                myAt[0] = 'left';
                                offset[0] = position.left;
                        } else if ('right' in position) {
                                myAt[0] = 'right';
                                offset[0] = -position.right;
                        }

                        if ('top' in position) {
                                myAt[1] = 'top';
                                offset[1] = position.top;
                        } else if ('bottom' in position) {
                                myAt[1] = 'bottom';
                                offset[1] = -position.bottom;
                        }
                }

                this.uiDialog.position({
                        my: myAt.join(' '),
                        at: myAt.join(' '),
                        offset: offset.join(' '),
                        of: window,
                        collision: 'fit'
                });
        },

        _setData: function(key, value){
                var self = this,
                        uiDialog = self.uiDialog,
                        resize = false;
                
                (setDataSwitch[key] && uiDialog.data(setDataSwitch[key], value));
                switch (key) {
                        case "buttons":
                                self._createButtons(value);
                                break;
                        case "closeText":
                                // convert whatever was passed in o a string, for text() to not throw up
                                self.uiDialogTitlebarCloseText.text("" + value);
                                break;
                        case "dialogClass":
                                uiDialog
                                        .removeClass(self.options.dialogClass)
                                        .addClass(uiDialogClasses + value);
                                break;
                        case "disabled":
                                (value
                                        ? uiDialog.addClass('ui-dialog-disabled')
                                        : uiDialog.removeClass('ui-dialog-disabled'));
                                break;
                        case "draggable":
                                (value
                                        ? self._makeDraggable()
                                        : uiDialog.draggable('destroy'));
                                break;
                        case "height":
                                resize = true;
                                break;
                        case "minHeight":
                                resize = true;
                                break;
                        case "position":
                                self._position(value);
                                break;
                        case "resizable":
                                var isResizable = uiDialog.is(':data(resizable)');

                                // currently resizable, becoming non-resizable
                                (isResizable && !value && uiDialog.resizable('destroy'));

                                // currently resizable, changing handles
                                (isResizable && typeof value == 'string' &&
                                        uiDialog.resizable('option', 'handles', value));

                                // currently non-resizable, becoming resizable
                                (isResizable || (value !== false && self._makeResizable(value)));
                                break;
                        case "title":
                                // convert whatever was passed in o a string, for html() to not throw up
                                $(".ui-dialog-title", self.uiDialogTitlebar).html("" + (value || '&#160;'));
                                break;
                        case "width":
                                resize = true;
                                break;
                }

                $.widget.prototype._setData.apply(self, arguments);
                (resize && self._size());
        },

        _size: function() {
                /* If the user has resized the dialog, the .ui-dialog and .ui-dialog-content
                 * divs will both have width and height set, so we need to reset them
                 */
                var options = this.options;

                // reset content sizing
                this.element.css({
                        height: 0,
                        minHeight: 0,
                        width: 'auto'
                });

                // reset wrapper sizing
                // determine the height of all the non-content elements
                var nonContentHeight = this.uiDialog.css({
                                height: 'auto',
                                width: options.width
                        })
                        .height();

                this.element.css(options.height == 'auto'
                        ? {
                                minHeight: Math.max(options.minHeight - nonContentHeight, 0),
                                height: 'auto'
                        }
                        : {
                                height: Math.max(options.height - nonContentHeight, 0)
                        });

                (this.uiDialog.is(':data(resizable)') &&
                        this.uiDialog.resizable('option', 'minHeight', this._minHeight()));
        }
});

$.extend($.ui.dialog, {
        version: "@VERSION",
        defaults: {
                autoOpen: true,
                stackfix: false,
                buttons: {},
                closeOnEscape: true,
                closeText: 'close',
                dialogClass: '',
                draggable: true,
                hide: null,
                height: 'auto',
                maxHeight: false,
                maxWidth: false,
                minHeight: 150,
                minWidth: 150,
                modal: false,
                position: 'center',
                resizable: true,
                show: null,
                stack: true,
                title: '',
                width: 300,
                zIndex: 1000
        },

        uuid: 0,
        maxZ: 0,

        getTitleId: function($el) {
                return 'ui-dialog-title-' + ($el.attr('id') || ++this.uuid);
        },

        overlay: function(dialog) {
                this.$el = $.ui.dialog.overlay.create(dialog);
        }
});

$.extend($.ui.dialog.overlay, {
        instances: [],
        maxZ: 0,
        events: $.map('focus,mousedown,mouseup,keydown,keypress,click'.split(','),
                function(event) { return event + '.dialog-overlay'; }).join(' '),
        create: function(dialog) {
                if (this.instances.length === 0) {
                        // prevent use of anchors and inputs
                        // we use a setTimeout in case the overlay is created from an
                        // event that we're going to be cancelling (see #2804)
                        setTimeout(function() {
                                // handle $(el).dialog().dialog('close') (see #4065)
                                if ($.ui.dialog.overlay.instances.length) {
                                        $(document).bind($.ui.dialog.overlay.events, function(event) {
                                                var dialogZ = $(event.target).parents('.ui-dialog').css('zIndex') || 0;
                                                return (dialogZ > $.ui.dialog.overlay.maxZ);
                                        });
                                }
                        }, 1);

                        // allow closing by pressing the escape key
                        $(document).bind('keydown.dialog-overlay', function(event) {
                                (dialog.options.closeOnEscape && event.keyCode
                                                && event.keyCode == $.ui.keyCode.ESCAPE && dialog.close(event));
                        });

                        // handle window resize
                        $(window).bind('resize.dialog-overlay', $.ui.dialog.overlay.resize);
                }

                var $el = $('<div></div>').appendTo(document.body)
                        .addClass('ui-widget-overlay').css({
                                width: this.width(),
                                height: this.height()
                        });

                (dialog.options.stackfix && $.fn.stackfix && $el.stackfix());

                this.instances.push($el);
                return $el;
        },

        destroy: function($el) {
                this.instances.splice($.inArray(this.instances, $el), 1);

                if (this.instances.length === 0) {
                        $([document, window]).unbind('.dialog-overlay');
                }

                $el.remove();
                
                // adjust the maxZ to allow other modal dialogs to continue to work (see #4309)
                var maxZ = 0;
                $.each(this.instances, function() {
                        maxZ = Math.max(maxZ, this.css('z-index'));
                });
                this.maxZ = maxZ;
        },

        height: function() {
                // handle IE 6
                if ($.browser.msie && $.browser.version < 7) {
                        var scrollHeight = Math.max(
                                document.documentElement.scrollHeight,
                                document.body.scrollHeight
                        );
                        var offsetHeight = Math.max(
                                document.documentElement.offsetHeight,
                                document.body.offsetHeight
                        );

                        if (scrollHeight < offsetHeight) {
                                return $(window).height() + 'px';
                        } else {
                                return scrollHeight + 'px';
                        }
                // handle "good" browsers
                } else {
                        return $(document).height() + 'px';
                }
        },

        width: function() {
                // handle IE 6
                if ($.browser.msie && $.browser.version < 7) {
                        var scrollWidth = Math.max(
                                document.documentElement.scrollWidth,
                                document.body.scrollWidth
                        );
                        var offsetWidth = Math.max(
                                document.documentElement.offsetWidth,
                                document.body.offsetWidth
                        );

                        if (scrollWidth < offsetWidth) {
                                return $(window).width() + 'px';
                        } else {
                                return scrollWidth + 'px';
                        }
                // handle "good" browsers
                } else {
                        return $(document).width() + 'px';
                }
        },

        resize: function() {
                /* If the dialog is draggable and the user drags it past the
                 * right edge of the window, the document becomes wider so we
                 * need to stretch the overlay. If the user then drags the
                 * dialog back to the left, the document will become narrower,
                 * so we need to shrink the overlay to the appropriate size.
                 * This is handled by shrinking the overlay before setting it
                 * to the full document size.
                 */
                var $overlays = $([]);
                $.each($.ui.dialog.overlay.instances, function() {
                        $overlays = $overlays.add(this);
                });

                $overlays.css({
                        width: 0,
                        height: 0
                }).css({
                        width: $.ui.dialog.overlay.width(),
                        height: $.ui.dialog.overlay.height()
                });
        }
});

$.extend($.ui.dialog.overlay.prototype, {
        destroy: function() {
                $.ui.dialog.overlay.destroy(this.$el);
        }
});

})(jQuery);