class TooltipUI {
constructor($node, options) {
this.$node = $node;
this.options = $.extend({}, {
title: '',
target: options.container,
trigger: 'hover focus',
placement: 'bottom'
}, options);
// create tooltip node
this.$tooltip = $([
'<div class="note-tooltip in">',
' <div class="note-tooltip-arrow"/>',
' <div class="note-tooltip-content"/>',
'</div>'
].join(''));
// define event
if (this.options.trigger !== 'manual') {
const showCallback = this.show.bind(this);
const hideCallback = this.hide.bind(this);
const toggleCallback = this.toggle.bind(this);
this.options.trigger.split(' ').forEach(function(eventName) {
if (eventName === 'hover') {
$node.off('mouseenter mouseleave');
$node.on('mouseenter', showCallback).on('mouseleave', hideCallback);
} else if (eventName === 'click') {
$node.on('click', toggleCallback);
} else if (eventName === 'focus') {
$node.on('focus', showCallback).on('blur', hideCallback);
}
});
}
}
show() {
const $node = this.$node;
const offset = $node.offset();
const $tooltip = this.$tooltip;
const title = this.options.title || $node.attr('title') || $node.data('title');
const placement = this.options.placement || $node.data('placement');
$tooltip.addClass(placement);
$tooltip.addClass('in');
$tooltip.find('.note-tooltip-content').text(title);
$tooltip.appendTo(this.options.target);
const nodeWidth = $node.outerWidth();
const nodeHeight = $node.outerHeight();
const tooltipWidth = $tooltip.outerWidth();
const tooltipHeight = $tooltip.outerHeight();
if (placement === 'bottom') {
$tooltip.css({
top: offset.top + nodeHeight,
left: offset.left + (nodeWidth / 2 - tooltipWidth / 2)
});
} else if (placement === 'top') {
$tooltip.css({
top: offset.top - tooltipHeight,
left: offset.left + (nodeWidth / 2 - tooltipWidth / 2)
});
} else if (placement === 'left') {
$tooltip.css({
top: offset.top + (nodeHeight / 2 - tooltipHeight / 2),
left: offset.left - tooltipWidth
});
} else if (placement === 'right') {
$tooltip.css({
top: offset.top + (nodeHeight / 2 - tooltipHeight / 2),
left: offset.left + nodeWidth
});
}
}
hide() {
this.$tooltip.removeClass('in');
this.$tooltip.remove();
}
toggle() {
if (this.$tooltip.hasClass('in')) {
this.hide();
} else {
this.show();
}
}
}
export default TooltipUI;
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