1 files changed, 97 insertions, 0 deletions
diff --git a/static/js/ext/class-tools.js b/static/js/ext/class-tools.js
new file mode 100644
index 0000000..83f5c7c
--- /dev/null
+++ b/static/js/ext/class-tools.js
@@ -0,0 +1,97 @@
+(function () {
+
+    if (htmx.version && !htmx.version.startsWith("1.")) {
+        console.warn("WARNING: You are using an htmx 1 extension with htmx " + htmx.version +
+            ".  It is recommended that you move to the version of this extension found on https://htmx.org/extensions")
+    }
+
+    function splitOnWhitespace(trigger) {
+        return trigger.split(/\s+/);
+    }
+
+    function parseClassOperation(trimmedValue) {
+        var split = splitOnWhitespace(trimmedValue);
+        if (split.length > 1) {
+            var operation = split[0];
+            var classDef = split[1].trim();
+            var cssClass;
+            var delay;
+            if (classDef.indexOf(":") > 0) {
+                var splitCssClass = classDef.split(':');
+                cssClass = splitCssClass[0];
+                delay = htmx.parseInterval(splitCssClass[1]);
+            } else {
+                cssClass = classDef;
+                delay = 100;
+            }
+            return {
+                operation: operation,
+                cssClass: cssClass,
+                delay: delay
+            }
+        } else {
+            return null;
+        }
+    }
+
+    function performOperation(elt, classOperation, classList, currentRunTime) {
+        setTimeout(function () {
+            elt.classList[classOperation.operation].call(elt.classList, classOperation.cssClass);
+        }, currentRunTime)
+    }
+
+    function toggleOperation(elt, classOperation, classList, currentRunTime) {
+        setTimeout(function () {
+            setInterval(function () {
+                elt.classList[classOperation.operation].call(elt.classList, classOperation.cssClass);
+            }, classOperation.delay);
+        }, currentRunTime)
+    }
+
+    function processClassList(elt, classList) {
+        var runs = classList.split("&");
+        for (var i = 0; i < runs.length; i++) {
+            var run = runs[i];
+            var currentRunTime = 0;
+            var classOperations = run.split(",");
+            for (var j = 0; j < classOperations.length; j++) {
+                var value = classOperations[j];
+                var trimmedValue = value.trim();
+                var classOperation = parseClassOperation(trimmedValue);
+                if (classOperation) {
+                    if (classOperation.operation === "toggle") {
+                        toggleOperation(elt, classOperation, classList, currentRunTime);
+                        currentRunTime = currentRunTime + classOperation.delay;
+                    } else {
+                        currentRunTime = currentRunTime + classOperation.delay;
+                        performOperation(elt, classOperation, classList, currentRunTime);
+                    }
+                }
+            }
+        }
+    }
+
+    function maybeProcessClasses(elt) {
+        if (elt.getAttribute) {
+            var classList = elt.getAttribute("classes") || elt.getAttribute("data-classes");
+            if (classList) {
+                processClassList(elt, classList);
+            }
+        }
+    }
+
+    htmx.defineExtension('class-tools', {
+        onEvent: function (name, evt) {
+            if (name === "htmx:afterProcessNode") {
+                var elt = evt.detail.elt;
+                maybeProcessClasses(elt);
+                if (elt.querySelectorAll) {
+                    var children = elt.querySelectorAll("[classes], [data-classes]");
+                    for (var i = 0; i < children.length; i++) {
+                        maybeProcessClasses(children[i]);
+                    }
+                }
+            }
+        }
+    });
+})();