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class PopoverUI {
constructor($node, options) {
this.$node = $node;
this.options = $.extend({}, {
title: '',
content: '',
target: options.container,
trigger: 'hover focus',
placement: 'bottom'
}, options);
// create popover node
this.$popover = $([
'<div class="note-popover in">',
' <div class="note-popover-arrow" />',
' <div class="note-popover-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').on('mouseenter', showCallback);
$node.off('mouseleave').on('mouseleave', hideCallback);
} else if (eventName === 'click') {
$node.on('click', toggleCallback);
} else if (eventName === 'focus') {
$node.on('focus', showCallback);
$node.on('blur', hideCallback);
}
});
}
}
show() {
const $node = this.$node;
const offset = $node.offset();
const $popover = this.$popover;
const content = this.options.content || $node.data('content');
const placement = $node.data('placement') || this.options.placement;
const dist = 6;
$popover.addClass(placement);
$popover.addClass('in');
$popover.find('.note-popover-content').html(content);
$popover.appendTo(this.options.target);
const nodeWidth = $node.outerWidth();
const nodeHeight = $node.outerHeight();
const popoverWidth = $popover.outerWidth();
const popoverHeight = $popover.outerHeight();
if (placement === 'bottom') {
$popover.css({
top: offset.top + nodeHeight + dist,
left: offset.left + (nodeWidth / 2 - popoverWidth / 2)
});
} else if (placement === 'top') {
$popover.css({
top: offset.top - popoverHeight - dist,
left: offset.left + (nodeWidth / 2 - popoverWidth / 2)
});
} else if (placement === 'left') {
$popover.css({
top: offset.top + (nodeHeight / 2 - popoverHeight / 2),
left: offset.left - popoverWidth - dist
});
} else if (placement === 'right') {
$popover.css({
top: offset.top + (nodeHeight / 2 - popoverHeight / 2),
left: offset.left + nodeWidth + dist
});
}
}
hide() {
this.$popover.removeClass('in');
this.$popover.remove();
}
toggle() {
if (this.$popover.hasClass('in')) {
this.hide();
} else {
this.show();
}
}
}
export default PopoverUI;