vis.js is a dynamic, browser-based visualization library
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/**
* Popup is a class to create a popup window with some text
* @class Popup
*/
class Popup {
/**
* @param {Element} container The container object.
* @param {string} overflowMethod How the popup should act to overflowing ('flip' or 'cap')
* @constructor Popup
*/
constructor(container, overflowMethod) {
this.container = container;
this.overflowMethod = overflowMethod || 'cap';
this.x = 0;
this.y = 0;
this.padding = 5;
this.hidden = false;
// create the frame
this.frame = document.createElement('div');
this.frame.className = 'vis-tooltip';
this.container.appendChild(this.frame);
}
/**
* @param {number} x Horizontal position of the popup window
* @param {number} y Vertical position of the popup window
*/
setPosition(x, y) {
this.x = parseInt(x);
this.y = parseInt(y);
}
/**
* Set the content for the popup window. This can be HTML code or text.
* @param {string | Element} content
*/
setText(content) {
if (content instanceof Element) {
this.frame.innerHTML = '';
this.frame.appendChild(content);
}
else {
this.frame.innerHTML = content; // string containing text or HTML
}
}
/**
* Show the popup window
* @param {boolean} [doShow] Show or hide the window
*/
show(doShow) {
if (doShow === undefined) {
doShow = true;
}
if (doShow === true) {
var height = this.frame.clientHeight;
var width = this.frame.clientWidth;
var maxHeight = this.frame.parentNode.clientHeight;
var maxWidth = this.frame.parentNode.clientWidth;
var left = 0, top = 0;
if (this.overflowMethod == 'flip') {
var isLeft = false, isTop = true; // Where around the position it's located
if (this.y - height < this.padding) {
isTop = false;
}
if (this.x + width > maxWidth - this.padding) {
isLeft = true;
}
if (isLeft) {
left = this.x - width;
} else {
left = this.x;
}
if (isTop) {
top = this.y - height;
} else {
top = this.y;
}
} else {
top = (this.y - height);
if (top + height + this.padding > maxHeight) {
top = maxHeight - height - this.padding;
}
if (top < this.padding) {
top = this.padding;
}
left = this.x;
if (left + width + this.padding > maxWidth) {
left = maxWidth - width - this.padding;
}
if (left < this.padding) {
left = this.padding;
}
}
this.frame.style.left = left + "px";
this.frame.style.top = top + "px";
this.frame.style.visibility = "visible";
this.hidden = false;
}
else {
this.hide();
}
}
/**
* Hide the popup window
*/
hide() {
this.hidden = true;
this.frame.style.left = "0";
this.frame.style.top = "0";
this.frame.style.visibility = "hidden";
}
/**
* Remove the popup window
*/
destroy() {
this.frame.parentNode.removeChild(this.frame); // Remove element from DOM
}
}
export default Popup;