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lulandia.pl/modules/advancedpopupcreator/lib/CodeMirror/addon/display/placeholder.js
2025-04-01 00:38:54 +02:00

81 lines
2.8 KiB
JavaScript

/*
* NOTICE OF LICENSE
*
* This product is licensed for one customer to use on one installation (test stores and multishop included).
* Site developer has the right to modify this module to suit their needs, but can not redistribute the module in
* whole or in part. Any other use of this module constitutes a violation of the user agreement.
*
* DISCLAIMER
*
* NO WARRANTIES OF DATA SAFETY OR MODULE SECURITY
* ARE EXPRESSED OR IMPLIED. USE THIS MODULE IN ACCORDANCE
* WITH YOUR MERCHANT AGREEMENT, KNOWING THAT VIOLATIONS OF
* PCI COMPLIANCY OR A DATA BREACH CAN COST THOUSANDS OF DOLLARS
* IN FINES AND DAMAGE A STORES REPUTATION. USE AT YOUR OWN RISK.
*
* @author idnovate.com <info@idnovate.com>
* @copyright 2022 idnovate.com
* @license See above
*/
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
CodeMirror.defineOption("placeholder", "", function(cm, val, old) {
var prev = old && old != CodeMirror.Init;
if (val && !prev) {
cm.on("blur", onBlur);
cm.on("change", onChange);
cm.on("swapDoc", onChange);
onChange(cm);
} else if (!val && prev) {
cm.off("blur", onBlur);
cm.off("change", onChange);
cm.off("swapDoc", onChange);
clearPlaceholder(cm);
var wrapper = cm.getWrapperElement();
wrapper.className = wrapper.className.replace(" CodeMirror-empty", "");
}
if (val && !cm.hasFocus()) onBlur(cm);
});
function clearPlaceholder(cm) {
if (cm.state.placeholder) {
cm.state.placeholder.parentNode.removeChild(cm.state.placeholder);
cm.state.placeholder = null;
}
}
function setPlaceholder(cm) {
clearPlaceholder(cm);
var elt = cm.state.placeholder = document.createElement("pre");
elt.style.cssText = "height: 0; overflow: visible";
elt.style.direction = cm.getOption("direction");
elt.className = "CodeMirror-placeholder CodeMirror-line-like";
var placeHolder = cm.getOption("placeholder")
if (typeof placeHolder == "string") placeHolder = document.createTextNode(placeHolder)
elt.appendChild(placeHolder)
cm.display.lineSpace.insertBefore(elt, cm.display.lineSpace.firstChild);
}
function onBlur(cm) {
if (isEmpty(cm)) setPlaceholder(cm);
}
function onChange(cm) {
var wrapper = cm.getWrapperElement(), empty = isEmpty(cm);
wrapper.className = wrapper.className.replace(" CodeMirror-empty", "") + (empty ? " CodeMirror-empty" : "");
if (empty) setPlaceholder(cm);
else clearPlaceholder(cm);
}
function isEmpty(cm) {
return (cm.lineCount() === 1) && (cm.getLine(0) === "");
}
});