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/*
 * jquery-gpopover
 * http://github.com/markembling/jquery-gpopover
 *
 * A simple jQuery plugin for creating popover elements similar to Google's 
 * new 'apps' launcher/switcher.
 *
 * Copyright (c) 2013 Mark Embling (markembling.info)
 * Licensed under the BSD (3 clause) license.
 */

;(function($){
    
    var GPopover = function(element, options) {
        this.options = null;
        this.$trigger = null;
        this.$popover = null;
        
        this.init(element, options);
    }
    
    GPopover.prototype.init = function(element, options) {
        var that = this;
        
        this.options = $.extend({}, $.fn.gpopover.defaults, options);
        
        this.$trigger = $(element);
        this.$popover = $('#' + this.$trigger.data('popover'));
        
        this._addArrowElements();
        
        if (this.options.preventHide) {
            this._preventHideClickPropagation();
        }
        
        this.$trigger.click(function(e){
            if (! that.$popover.is(":visible")) {
                // Trigger a click on the parent element (that can bubble up)
                $(this).parent().click();
                
                that.show();
                
                e.stopPropagation();
            }
            
            e.preventDefault();
        });
    }
    
    GPopover.prototype.show = function() {
        var that = this;
        
        // Set width before showing
        this.$popover.width(this.options.width);
        
        // Show the popover
        this.$popover.fadeIn(this.options.fadeInDuration);
        
        // Set up hiding
        $(document).one('click.popoverHide', function() {
            // _hidePopover($popover, settings);
            that.hide();
        });
    
        // Sort out the position (must be done after showing)
        var triggerPos = this.$trigger.offset();
        this.$popover.offset({
            left: (triggerPos.left + (this.$trigger.outerWidth() / 2)) - (this.$popover.outerWidth() / 2),
            top: triggerPos.top + this.$trigger.outerHeight() + 10  
            // the final 10 above allows room for the arrow above it
        });
    
        // Check and reposition if out of the viewport
        var positionXCorrection = this._repositionForViewportSides();
    
        // Set the position of the arrow elements
        this._setArrowPosition(positionXCorrection);
        
        // Call the callback
        this.options.onShow.call(this.$trigger, this.$popover);
    }
    
    GPopover.prototype.hide = function() {
        // Hide the popover
        this.$popover.fadeOut(this.options.fadeOutDuration);
        
        // Call the callback
        this.options.onHide.call(this.$trigger, this.$popover);
    }
    
    GPopover.prototype._addArrowElements = function() {
        this.$arrow = $('<div class="gpopover-arrow"></div>');
        this.$arrowShadow = $('<div class="gpopover-arrow-shadow"></div>');
        
        this.$popover.append(this.$arrow);
        this.$popover.append(this.$arrowShadow);
    }
    
    GPopover.prototype._preventHideClickPropagation = function() {
        /* Prevent clicks within the popover from being propagated 
           to the document (and thus stop the popover from being 
           hidden) */
        this.$popover.click(function(e) { e.stopPropagation(); });
    }
    
    GPopover.prototype._repositionForViewportSides = function() {
        var popoverOffsetLeft = this.$popover.offset().left,
            positionXCorrection = 0,
            $window = $(window);
        
        // Right edge
        if (popoverOffsetLeft + this.$popover.outerWidth() + this.options.viewportSideMargin > $window.width()) {
            var rightEdgeCorrection = -((popoverOffsetLeft + this.$popover.outerWidth() + this.options.viewportSideMargin) - $window.width());
            popoverOffsetLeft = popoverOffsetLeft + rightEdgeCorrection
        
            positionXCorrection = rightEdgeCorrection;
        }
        
        // Left edge
        if (popoverOffsetLeft < this.options.viewportSideMargin) {
            var leftEdgeCorrection = this.options.viewportSideMargin - popoverOffsetLeft;
            popoverOffsetLeft = popoverOffsetLeft + leftEdgeCorrection
            
            positionXCorrection += leftEdgeCorrection;
        }
        
        // Reposition the popover element if necessary
        if (positionXCorrection !== 0) {
            this.$popover.offset({ left: popoverOffsetLeft });
        }
        
        return positionXCorrection;
    }
    
    GPopover.prototype._setArrowPosition = function(positionXCorrection) {
        var leftPosition = (this.$popover.outerWidth() / 2) - (this.$arrow.outerWidth() / 2) - positionXCorrection;
        
        this.$arrow.css({ top: -7, left: leftPosition });
        this.$arrowShadow.css({ top: -8, left: leftPosition });
    }
    
    $.fn.gpopover = function(option) {
        return this.each(function(){
            var $this = $(this),
                data = $this.data('gpopover'),
                options = (typeof option == 'object' && option);
                
            // Initialise if not already done
            if (!data) {
                data = new GPopover(this, options);
                $this.data('gpopover', data);
            }
            
            // If the option parameter was a string, trigger the named function
            if (typeof option == 'string') data[option]();
        });
        
    };
    
    // Default settings
    $.fn.gpopover.defaults = {
        width: 250,             // Width of the popover
        fadeInDuration: 65,     // Duration of popover fade-in animation
        fadeOutDuration: 65,    // Duration of popover fade-out animation
        viewportSideMargin: 10, // Space to leave the side if out the viewport
        preventHide: false,     // Prevent hide when clicking within popover
        
        onShow: function() {},  // Called upon showing the popover
        onHide: function() {}   // Called upon hiding the popover
    };
    
})(jQuery);

• ?? jquery.gpopover.css | ?? Edit | ??? Delete
• ?? jquery.gpopover.js | ?? Edit | ??? Delete
• ?? LICENSE | ?? Edit | ??? Delete
• ?? README.md | ?? Edit | ??? Delete