Sha256: 20d8eeb9b67e6d6a4962935020212b8b06f930da070f0e119b076b76b6fc7049
Contents?: true
Size: 1.63 KB
Versions: 7
Compression:
Stored size: 1.63 KB
Contents
(function() {
CodeMirror.defineOption("placeholder", "", function(cm, val, old) {
var prev = old && old != CodeMirror.Init;
if (val && !prev) {
cm.on("focus", onFocus);
cm.on("blur", onBlur);
cm.on("change", onChange);
onChange(cm);
} else if (!val && prev) {
cm.off("focus", onFocus);
cm.off("blur", onBlur);
cm.off("change", 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._placeholder) {
cm._placeholder.parentNode.removeChild(cm._placeholder);
cm._placeholder = null;
}
}
function setPlaceholder(cm) {
clearPlaceholder(cm);
var elt = cm._placeholder = document.createElement("pre");
elt.style.cssText = "height: 0; overflow: visible";
elt.className = "CodeMirror-placeholder";
elt.appendChild(document.createTextNode(cm.getOption("placeholder")));
cm.display.lineSpace.insertBefore(elt, cm.display.lineSpace.firstChild);
}
function onFocus(cm) {
clearPlaceholder(cm);
}
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 (cm.hasFocus()) return;
if (empty) setPlaceholder(cm);
else clearPlaceholder(cm);
}
function isEmpty(cm) {
return (cm.lineCount() === 1) && (cm.getLine(0) === "");
}
})();
Version data entries
7 entries across 7 versions & 3 rubygems