Get width of tooltip and calculate placement (Twitter Bootstrap)

javascript, jquery, tooltip, twitter-bootstrap

Solution

From a logically point of view it is impossible :) Think about it - the tooltip calls the placement function to get its position, and then it inserts the tip to the page and style it.

However, you can create a dummy-tip with the same features as the soon-to-come tip, and by that get the width. Like this :

$('body').tooltip({
    delay: { show: 300, hide: 0 },
    placement: function(a, element) {

        //title is by tooltip moved to data-original-title
        var title=$(element).attr('data-original-title');

        //create dummy, a div with the same features as the tooltïp
        var dummy=$('<div class="tooltip">'+title+'</div>').appendTo('body');
        var width=$(dummy).width();
        dummy.remove();

        //now you have width 
        //..
        //..

        var position = $(element).position();
        if (position.left > 515) {
            return "left";
        }
        if (position.left < 515) {
            return "right";
        }
        if (position.top < 110){
            return "bottom";
        }
        return "top";
    },
    selector: '[rel=tooltip]:not([disabled])'
});

Problem

This is a follow up to my previous question. I need to place Bootstrap tooltips dynamically. To do so, I need to know the position of the element which triggers the tooltip (works fine) AND the width of the tooltip which is supposed to show up: Edit for clarification: My tooltips are generated dynamically and then inserted into the content. If they are, for example, too close to the left edge of the screen I need to place them 'right' instead of 'top'. Now I want to get the width of the tooltip to only place it 'right' when it would actually go out of the screen. ``` $('body').tooltip({ delay: { show: 300, hide: 0 }, selector: '[rel=tooltip]:not([disabled])', placement: function(tip, element) { var offsetLeft = $(element).offset().left; var offsetRight = ( $(window).width() - ( offsetLeft + $(element).outerWidth() ) ); // need help here: how to get the width of the current tooltip? // currently returns "0" for all elements var tooltipWidth = $(tip).outerWidth(); console.log(tooltipWidth); if (offsetLeft < 220) { return 'right'; } if (offsetRight < 220) { return 'left'; } else { return 'top'; } } }); ``` Thanks in advance.

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