/*
 * jQuery UI Dialog 1.7.2
 *
 * 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:
 *        ui.core.js
 *        ui.draggable.js
 *        ui.resizable.js
 */
(function($) {

var setDataSwitch = {
                dragStart: "start.draggable",
                drag: "drag.draggable",
                dragStop: "stop.draggable",
                maxHeight: "maxHeight.resizable",
                minHeight: "minHeight.resizable",
                maxWidth: "maxWidth.resizable",
                minWidth: "minWidth.resizable",
                resizeStart: "start.resizable",
                resize: "drag.resizable",
                resizeStop: "stop.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 = this.options,

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

                        uiDialog = (this.uiDialog = $('<div/>'))
                                .appendTo(document.body)
                                .hide()
                                .addClass(uiDialogClasses + options.dialogClass)
                                .css({
                                        position: 'absolute',
                                        overflow: 'hidden',
                                        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 = this.element
                                .show()
                                .removeAttr('title')
                                .addClass(
                                        'ui-dialog-content ' +
                                        'ui-widget-content')
                                .appendTo(uiDialog),

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

                        uiDialogTitlebarClose = $('<a href="#"/>')
                                .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 = (this.uiDialogTitlebarCloseText = $('<span/>'))
                                .addClass(
                                        'ui-icon ' +
                                        'ui-icon-closethick'
                                )
                                .text(options.closeText)
                                .appendTo(uiDialogTitlebarClose),

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

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

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

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

                (options.bgiframe && $.fn.bgiframe && uiDialog.bgiframe());
                (options.autoOpen && this.open());
                
        },

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

                (this.originalTitle && this.element.attr('title', this.originalTitle));
        },

        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;
                }
        },

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

        // the force parameter allows us to move modal dialogs to their correct
        // position on open
        moveToTop: function(force, event) {

                if ((this.options.modal && !force)
                        || (!this.options.stack && !this.options.modal)) {
                        return this._trigger('focus', event);
                }
                
                if (this.options.zIndex > $.ui.dialog.maxZ) {
                        $.ui.dialog.maxZ = this.options.zIndex;
                }
                (this.overlay && this.overlay.$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: this.element.attr('scrollTop'), scrollLeft: this.element.attr('scrollLeft') };
                this.uiDialog.css('z-index', ++$.ui.dialog.maxZ);
                this.element.attr(saveScroll);
                this._trigger('focus', event);
        },

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

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

                this.overlay = options.modal ? new $.ui.dialog.overlay(this) : null;
                (uiDialog.next().length && uiDialog.appendTo('body'));
                this._size();
                this._position(options.position);
                uiDialog.show(options.show);
                this.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')[0],
                                last  = tabbables.filter(':last')[0];

                        if (event.target == last && !event.shiftKey) {
                                setTimeout(function() {
                                        first.focus();
                                }, 1);
                        } else if (event.target == first && event.shiftKey) {
                                setTimeout(function() {
                                        last.focus();
                                }, 1);
                        }
                }));

                // 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();

                this._trigger('open');
                this._isOpen = true;
        },

        _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
                this.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(this.uiDialog);
                }
        },

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

                this.uiDialog.draggable({
                        cancel: '.ui-dialog-content',
                        handle: '.ui-dialog-titlebar',
                        containment: 'document',
                        start: function() {
                                heightBeforeDrag = options.height;
                                $(this).height($(this).height()).addClass("ui-dialog-dragging");
                                (options.dragStart && options.dragStart.apply(self.element[0], arguments));
                        },
                        drag: function() {
                                (options.drag && options.drag.apply(self.element[0], arguments));
                        },
                        stop: function() {
                                $(this).removeClass("ui-dialog-dragging").height(heightBeforeDrag);
                                (options.dragStop && options.dragStop.apply(self.element[0], arguments));
                                $.ui.dialog.overlay.resize();
                        }
                });
        },

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

                this.uiDialog.resizable({
                        cancel: '.ui-dialog-content',
                        alsoResize: this.element,
                        maxWidth: options.maxWidth,
                        maxHeight: options.maxHeight,
                        minWidth: options.minWidth,
                        minHeight: options.minHeight,
                        start: function() {
                                $(this).addClass("ui-dialog-resizing");
                                (options.resizeStart && options.resizeStart.apply(self.element[0], arguments));
                        },
                        resize: function() {
                                (options.resize && options.resize.apply(self.element[0], arguments));
                        },
                        handles: resizeHandles,
                        stop: function() {
                                $(this).removeClass("ui-dialog-resizing");
                                options.height = $(this).height();
                                options.width = $(this).width();
                                (options.resizeStop && options.resizeStop.apply(self.element[0], arguments));
                                $.ui.dialog.overlay.resize();
                        }
                })
                .find('.ui-resizable-se').addClass('ui-icon ui-icon-grip-diagonal-se');
        },

        _position: function(pos) {
                var wnd = $(window), doc = $(document),
                        pTop = doc.scrollTop(), pLeft = doc.scrollLeft(),
                        minTop = pTop;

                if ($.inArray(pos, ['center','top','right','bottom','left']) >= 0) {
                        pos = [
                                pos == 'right' || pos == 'left' ? pos : 'center',
                                pos == 'top' || pos == 'bottom' ? pos : 'middle'
                        ];
                }
                if (pos.constructor != Array) {
                        pos = ['center', 'middle'];
                }
                if (pos[0].constructor == Number) {
                        pLeft += pos[0];
                } else {
                        switch (pos[0]) {
                                case 'left':
                                        pLeft += 0;
                                        break;
                                case 'right':
                                        pLeft += wnd.width() - this.uiDialog.outerWidth();
                                        break;
                                default:
                                case 'center':
                                        pLeft += (wnd.width() - this.uiDialog.outerWidth()) / 2;
                        }
                }
                if (pos[1].constructor == Number) {
                        pTop += pos[1];
                } else {
                        switch (pos[1]) {
                                case 'top':
                                        pTop += 0;
                                        break;
                                case 'bottom':
                                        pTop += wnd.height() - this.uiDialog.outerHeight();
                                        break;
                                default:
                                case 'middle':
                                        pTop += (wnd.height() - this.uiDialog.outerHeight()) / 2;
                        }
                }

                // prevent the dialog from being too high (make sure the titlebar
                // is accessible)
                pTop = Math.max(pTop, minTop);
                this.uiDialog.css({top: pTop, left: pLeft});
        },

        _setData: function(key, value){
                (setDataSwitch[key] && this.uiDialog.data(setDataSwitch[key], value));
                switch (key) {
                        case "buttons":
                                this._createButtons(value);
                                break;
                        case "closeText":
                                this.uiDialogTitlebarCloseText.text(value);
                                break;
                        case "dialogClass":
                                this.uiDialog
                                        .removeClass(this.options.dialogClass)
                                        .addClass(uiDialogClasses + value);
                                break;
                        case "draggable":
                                (value
                                        ? this._makeDraggable()
                                        : this.uiDialog.draggable('destroy'));
                                break;
                        case "height":
                                this.uiDialog.height(value);
                                break;
                        case "position":
                                this._position(value);
                                break;
                        case "resizable":
                                var uiDialog = this.uiDialog,
                                        isResizable = this.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 || this._makeResizable(value));
                                break;
                        case "title":
                                $(".ui-dialog-title", this.uiDialogTitlebar).html(value || '&nbsp;');
                                break;
                        case "width":
                                this.uiDialog.width(value);
                                break;
                }

                $.widget.prototype._setData.apply(this, arguments);
        },

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

$.extend($.ui.dialog, {
        version: "1.7.2",
        defaults: {
                autoOpen: true,
                bgiframe: 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
        },

        getter: 'isOpen',

        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.bgiframe && $.fn.bgiframe && $el.bgiframe());

                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);