tooltip.js

/*!
 * Bootstrap v3.3.7 (http://getbootstrap.com)
 * Copyright 2011-2016 Twitter, Inc.
 * Licensed under the MIT license
 */
var Tooltip = function(element, options) {
    this.type = null
    this.options = null
    this.enabled = null
    this.timeout = null
    this.hoverState = null
    this.$element = null
    this.inState = null

    this.init('tooltip', element, options)
}

Tooltip.VERSION = '3.3.7'

Tooltip.TRANSITION_DURATION = 150

Tooltip.DEFAULTS = {
    animation: true,
    placement: 'top',
    selector: false,
    template: '<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',
    trigger: 'hover focus',
    title: '',
    delay: 0,
    html: false,
    container: false,
    viewport: {
        selector: 'body',
        padding: 0
    }
}

Tooltip.prototype.init = function(type, element, options) {
    this.enabled = true
    this.type = type
    this.$element = $(element)
    this.options = this.getOptions(options)
    this.$viewport = this.options.viewport && $($.isFunction(this.options.viewport) ? this.options.viewport.call(this, this.$element) : (this.options.viewport.selector || this.options.viewport))
    this.inState = { click: false, hover: false, focus: false }

    if (this.$element[0] instanceof document.constructor && !this.options.selector) {
        throw new Error('`selector` option must be specified when initializing ' + this.type + ' on the window.document object!')
    }

    var triggers = this.options.trigger.split(' ')

    for (var i = triggers.length; i--;) {
        var trigger = triggers[i]

        if (trigger == 'click') {
            this.$element.on('click.' + this.type, this.options.selector, $.proxy(this.toggle, this))
        } else if (trigger != 'manual') {
            var eventIn = trigger == 'hover' ? 'mouseenter' : 'focusin'
            var eventOut = trigger == 'hover' ? 'mouseleave' : 'focusout'

            this.$element.on(eventIn + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
            this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
        }
    }

    this.options.selector ?
        (this._options = $.extend({}, this.options, { trigger: 'manual', selector: '' })) :
        this.fixTitle()
}

Tooltip.prototype.getDefaults = function() {
    return Tooltip.DEFAULTS
}

Tooltip.prototype.getOptions = function(options) {
    options = $.extend({}, this.getDefaults(), this.$element.data(), options)

    if (options.delay && typeof options.delay == 'number') {
        options.delay = {
            show: options.delay,
            hide: options.delay
        }
    }

    return options
}

Tooltip.prototype.getDelegateOptions = function() {
    var options = {}
    var defaults = this.getDefaults()

    this._options && $.each(this._options, function(key, value) {
        if (defaults[key] != value) options[key] = value
    })

    return options
}

Tooltip.prototype.enter = function(obj) {
    var self = obj instanceof this.constructor ?
        obj : $(obj.currentTarget).data('bs.' + this.type)

    if (!self) {
        self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
        $(obj.currentTarget).data('bs.' + this.type, self)
    }

    if (obj instanceof $.Event) {
        self.inState[obj.type == 'focusin' ? 'focus' : 'hover'] = true
    }

    if (self.tip().hasClass('in') || self.hoverState == 'in') {
        self.hoverState = 'in'
        return
    }

    clearTimeout(self.timeout)

    self.hoverState = 'in'

    if (!self.options.delay || !self.options.delay.show) return self.show()

    self.timeout = setTimeout(function() {
        if (self.hoverState == 'in') self.show()
    }, self.options.delay.show)
}

Tooltip.prototype.isInStateTrue = function() {
    for (var key in this.inState) {
        if (this.inState[key]) return true
    }

    return false
}

Tooltip.prototype.leave = function(obj) {
    var self = obj instanceof this.constructor ?
        obj : $(obj.currentTarget).data('bs.' + this.type)

    if (!self) {
        self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
        $(obj.currentTarget).data('bs.' + this.type, self)
    }

    if (obj instanceof $.Event) {
        self.inState[obj.type == 'focusout' ? 'focus' : 'hover'] = false
    }

    if (self.isInStateTrue()) return

    clearTimeout(self.timeout)

    self.hoverState = 'out'

    if (!self.options.delay || !self.options.delay.hide) return self.hide()

    self.timeout = setTimeout(function() {
        if (self.hoverState == 'out') self.hide()
    }, self.options.delay.hide)
}

Tooltip.prototype.show = function() {
    var e = $.Event('show.bs.' + this.type)

    if (this.hasContent() && this.enabled) {
        this.$element.trigger(e)

        var inDom = $.contains(this.$element[0].ownerDocument.documentElement, this.$element[0])
        if (e.isDefaultPrevented() || !inDom) return
        var that = this

        var $tip = this.tip()

        var tipId = this.getUID(this.type)

        this.setContent()
        $tip.attr('id', tipId)
        this.$element.attr('aria-describedby', tipId)

        if (this.options.animation) $tip.addClass('fade')

        var placement = typeof this.options.placement == 'function' ?
            this.options.placement.call(this, $tip[0], this.$element[0]) :
            this.options.placement

        var autoToken = /\s?auto?\s?/i
        var autoPlace = autoToken.test(placement)
        if (autoPlace) placement = placement.replace(autoToken, '') || 'top'

        $tip
            .detach()
            .css({ top: 0, left: 0, display: 'block' })
            .addClass(placement)
            .data('bs.' + this.type, this)

        this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)
        this.$element.trigger('inserted.bs.' + this.type)

        var pos = this.getPosition()
        var actualWidth = $tip[0].offsetWidth
        var actualHeight = $tip[0].offsetHeight

        if (autoPlace) {
            var orgPlacement = placement
            var viewportDim = this.getPosition(this.$viewport)

            placement = placement == 'bottom' && pos.bottom + actualHeight > viewportDim.bottom ? 'top' :
                placement == 'top' && pos.top - actualHeight < viewportDim.top ? 'bottom' :
                placement == 'right' && pos.right + actualWidth > viewportDim.width ? 'left' :
                placement == 'left' && pos.left - actualWidth < viewportDim.left ? 'right' :
                placement

            $tip
                .removeClass(orgPlacement)
                .addClass(placement)
        }

        var calculatedOffset = this.getCalculatedOffset(placement, pos, actualWidth, actualHeight)

        this.applyPlacement(calculatedOffset, placement)

        var complete = function() {
            var prevHoverState = that.hoverState
            that.$element.trigger('shown.bs.' + that.type)
            that.hoverState = null

            if (prevHoverState == 'out') that.leave(that)
        }

        $.support.transition && this.$tip.hasClass('fade') ?
            $tip
            .one('bsTransitionEnd', complete)
            .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
            complete()
    }
}

Tooltip.prototype.applyPlacement = function(offset, placement) {
    var $tip = this.tip()
    var width = $tip[0].offsetWidth
    var height = $tip[0].offsetHeight

    // manually read margins because getBoundingClientRect includes difference
    var marginTop = parseInt($tip.css('margin-top'), 10)
    var marginLeft = parseInt($tip.css('margin-left'), 10)

    // we must check for NaN for ie 8/9
    if (isNaN(marginTop)) marginTop = 0
    if (isNaN(marginLeft)) marginLeft = 0

    offset.top += marginTop
    offset.left += marginLeft

    // $.fn.offset doesn't round pixel values
    // so we use setOffset directly with our own function B-0
    $.offset.setOffset($tip[0], $.extend({
        using: function(props) {
            $tip.css({
                top: Math.round(props.top),
                left: Math.round(props.left)
            })
        }
    }, offset), 0)

    $tip.addClass('in')

    // check to see if placing tip in new offset caused the tip to resize itself
    var actualWidth = $tip[0].offsetWidth
    var actualHeight = $tip[0].offsetHeight

    if (placement == 'top' && actualHeight != height) {
        offset.top = offset.top + height - actualHeight
    }

    var delta = this.getViewportAdjustedDelta(placement, offset, actualWidth, actualHeight)

    if (delta.left) offset.left += delta.left
    else offset.top += delta.top

    var isVertical = /top|bottom/.test(placement)
    var arrowDelta = isVertical ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
    var arrowOffsetPosition = isVertical ? 'offsetWidth' : 'offsetHeight'

    $tip.offset(offset)
    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], isVertical)
}

Tooltip.prototype.replaceArrow = function(delta, dimension, isVertical) {
    this.arrow()
        .css(isVertical ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
        .css(isVertical ? 'top' : 'left', '')
}

Tooltip.prototype.setContent = function() {
    var $tip = this.tip()
    var title = this.getTitle()

    $tip.find('.tooltip-inner')[this.options.html ? 'html' : 'text'](title)
    $tip.removeClass('fade in top bottom left right')
}

Tooltip.prototype.hide = function(callback) {
    var that = this
    var $tip = $(this.$tip)
    var e = $.Event('hide.bs.' + this.type)

    function complete() {
        if (that.hoverState != 'in') $tip.detach()
        if (that.$element) { // TODO: Check whether guarding this code with this `if` is really necessary.
            that.$element
                .removeAttr('aria-describedby')
                .trigger('hidden.bs.' + that.type)
        }
        callback && callback()
    }

    this.$element.trigger(e)

    if (e.isDefaultPrevented()) return

    $tip.removeClass('in')

    $.support.transition && $tip.hasClass('fade') ?
        $tip
        .one('bsTransitionEnd', complete)
        .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
        complete()

    this.hoverState = null

    return this
}

Tooltip.prototype.fixTitle = function() {
    var $e = this.$element
    if ($e.attr('title') || typeof $e.attr('data-original-title') != 'string') {
        $e.attr('data-original-title', $e.attr('title') || '').attr('title', '')
    }
}

Tooltip.prototype.hasContent = function() {
    return this.getTitle()
}

Tooltip.prototype.getPosition = function($element) {
    $element = $element || this.$element

    var el = $element[0]
    var isBody = el.tagName == 'BODY'

    var elRect = el.getBoundingClientRect()
    if (elRect.width == null) {
        // width and height are missing in IE8, so compute them manually; see https://github.com/twbs/bootstrap/issues/14093
        elRect = $.extend({}, elRect, { width: elRect.right - elRect.left, height: elRect.bottom - elRect.top })
    }
    var isSvg = window.SVGElement && el instanceof window.SVGElement
        // Avoid using $.offset() on SVGs since it gives incorrect results in jQuery 3.
        // See https://github.com/twbs/bootstrap/issues/20280
    var elOffset = isBody ? { top: 0, left: 0 } : (isSvg ? null : $element.offset())
    var scroll = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
    var outerDims = isBody ? { width: $(window).width(), height: $(window).height() } : null

    return $.extend({}, elRect, scroll, outerDims, elOffset)
}

Tooltip.prototype.getCalculatedOffset = function(placement, pos, actualWidth, actualHeight) {
    return placement == 'bottom' ? { top: pos.top + pos.height, left: pos.left + pos.width / 2 - actualWidth / 2 } :
        placement == 'top' ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 } :
        placement == 'left' ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
        /* placement == 'right' */
        { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width }

}

Tooltip.prototype.getViewportAdjustedDelta = function(placement, pos, actualWidth, actualHeight) {
    var delta = { top: 0, left: 0 }
    if (!this.$viewport) return delta

    var viewportPadding = this.options.viewport && this.options.viewport.padding || 0
    var viewportDimensions = this.getPosition(this.$viewport)

    if (/right|left/.test(placement)) {
        var topEdgeOffset = pos.top - viewportPadding - viewportDimensions.scroll
        var bottomEdgeOffset = pos.top + viewportPadding - viewportDimensions.scroll + actualHeight
        if (topEdgeOffset < viewportDimensions.top) { // top overflow
            delta.top = viewportDimensions.top - topEdgeOffset
        } else if (bottomEdgeOffset > viewportDimensions.top + viewportDimensions.height) { // bottom overflow
            delta.top = viewportDimensions.top + viewportDimensions.height - bottomEdgeOffset
        }
    } else {
        var leftEdgeOffset = pos.left - viewportPadding
        var rightEdgeOffset = pos.left + viewportPadding + actualWidth
        if (leftEdgeOffset < viewportDimensions.left) { // left overflow
            delta.left = viewportDimensions.left - leftEdgeOffset
        } else if (rightEdgeOffset > viewportDimensions.right) { // right overflow
            delta.left = viewportDimensions.left + viewportDimensions.width - rightEdgeOffset
        }
    }

    return delta
}

Tooltip.prototype.getTitle = function() {
    var title
    var $e = this.$element
    var o = this.options

    title = $e.attr('data-original-title') ||
        (typeof o.title == 'function' ? o.title.call($e[0]) : o.title)

    return title
}

Tooltip.prototype.getUID = function(prefix) {
    do prefix += ~~(Math.random() * 1000000)
    while (document.getElementById(prefix))
    return prefix
}

Tooltip.prototype.tip = function() {
    if (!this.$tip) {
        this.$tip = $(this.options.template)
        if (this.$tip.length != 1) {
            throw new Error(this.type + ' `template` option must consist of exactly 1 top-level element!')
        }
    }
    return this.$tip
}

Tooltip.prototype.arrow = function() {
    return (this.$arrow = this.$arrow || this.tip().find('.tooltip-arrow'))
}

Tooltip.prototype.enable = function() {
    this.enabled = true
}

Tooltip.prototype.disable = function() {
    this.enabled = false
}

Tooltip.prototype.toggleEnabled = function() {
    this.enabled = !this.enabled
}

Tooltip.prototype.toggle = function(e) {
    var self = this
    if (e) {
        self = $(e.currentTarget).data('bs.' + this.type)
        if (!self) {
            self = new this.constructor(e.currentTarget, this.getDelegateOptions())
            $(e.currentTarget).data('bs.' + this.type, self)
        }
    }

    if (e) {
        self.inState.click = !self.inState.click
        if (self.isInStateTrue()) self.enter(self)
        else self.leave(self)
    } else {
        self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
    }
}

Tooltip.prototype.destroy = function() {
    var that = this
    clearTimeout(this.timeout)
    this.hide(function() {
        that.$element.off('.' + that.type).removeData('bs.' + that.type)
        if (that.$tip) {
            that.$tip.detach()
        }
        that.$tip = null
        that.$arrow = null
        that.$viewport = null
        that.$element = null
    })
}


// TOOLTIP PLUGIN DEFINITION
// =========================

function Plugin(option) {
    return this.each(function() {
        var $this = $(this)
        var data = $this.data('bs.tooltip')
        var options = typeof option == 'object' && option

        if (!data && /destroy|hide/.test(option)) return
        if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
        if (typeof option == 'string') data[option]()
    })
}

var old = $.fn.tooltip

$.fn.tooltip = Plugin
$.fn.tooltip.Constructor = Tooltip


// TOOLTIP NO CONFLICT
// ===================

$.fn.tooltip.noConflict = function() {
    $.fn.tooltip = old
    return this
}