improve demo code:

* load htmx and hyperscript after mock-request, so you can use `init` and `load` correctly
* disable all disableable elements while the demo environment is loading
* support a `delay` attribute on templates to specify a delay
* merged @dz4k's excellent simplification to the eval code

1 files changed, 93 insertions, 38 deletions

diff --git a/www/js/demo/it.js b/www/js/demo/it.js
index cd7d51d5..f53a11b7 100644
--- a/www/js/demo/it.js
+++ b/www/js/demo/it.js
@@ -1,42 +1,97 @@
-function addScript(url) {
-    var myScript = document.createElement('script');
-    myScript.setAttribute('src', url);
-    document.head.appendChild(myScript);
-}
-
-function interpolate(str, params) {
-    try {
-        return eval(
-            `env => { with (env) { return \`${str.replace(/`/, '\\`'}\` } }`
-        )(params)
-    } catch (e) {
-        return e.message;
+(function(){
+
+    function addScript(url) {
+        var myScript = document.createElement('script');
+        myScript.setAttribute('src', url);
+        document.head.appendChild(myScript);
+    }
+
+    function interpolate(str, params) {
+        try {
+            var escapedCode = str.replace(/`/, '\\`');
+            return eval(
+                `env => { with (env) { return \`${escapedCode}\` } }`
+            )(params)
+        } catch (e) {
+            log('demo:response-error', "An error occured during a mock response", e);
+            return e.message;
+        }
+    }
+
+    function log(name, message) {
+        console.log("@ " + new Date().valueOf() + " - ", ...arguments);
+        var event = new Event(name, {name:name, info:arguments});
+        if (document.body) {
+            document.body.dispatchEvent(event);
+        }
+    }
+
+    function initHtmxAndHyperscript() {
+        if (typeof htmx === "undefined" || typeof _hyperscript === "undefined") {
+            setTimeout(initHtmxAndHyperscript, 20);
+        } else {
+            enableThings();
+            log('demo:ready', "the demo environment is ready");
+        }
     }
-}
-
-function initMockRequests() {
-    if(typeof MockRequests === "undefined" ||
-        typeof htmx === "undefined" ||
-        typeof _hyperscript === "undefined") {
-        // console.log("Not defined yet");
-        setTimeout(initMockRequests, 20);
-    } else {
-        // console.log("defining");
-        htmx.findAll("template").forEach(function(elt){
-            if(elt.getAttribute("url")){
-                MockRequests.setDynamicMockUrlResponse(elt.getAttribute("url"),
-                    {dynamicResponseModFn:
-                            function(request, response, parameters) {
-                                console.log(request, response, parameters)
-                                return interpolate(elt.innerHTML, { ...parameters, ...Object.fromEntries(new URLSearchParams(request)) });
-                            },
-                    usePathnameForAllQueries: true});
+
+    var DISABLEABLE_ELTS = "button, command, fieldset, keygen, optgroup, option, select, textarea, input";
+    function disableThings() {
+        log('demo:disabling-elts', "disabling elements");
+        document.querySelectorAll(DISABLEABLE_ELTS).forEach(function(elt){
+            elt.setAttribute("data-was-disabled", elt.hasAttribute('disabled'));
+            elt.setAttribute("disabled", "true");
+        })
+    }
+
+    function enableThings() {
+        log('demo:enabling-elts', "enabling elements");
+        document.querySelectorAll(DISABLEABLE_ELTS).forEach(function(elt){
+            if (elt.getAttribute("data-was-disabled") == "false") {
+                elt.removeAttribute("disabled");
             }
-        });
+        })
+    }
+
+    function initMockRequests() {
+        if(typeof MockRequests === "undefined") {
+            // console.log("Not defined yet");
+            setTimeout(initMockRequests, 20);
+        } else {
+
+            log('demo:mock-request-loaded', "mock-request library loaded, mocking requests and loading htmx & hyperscript")
+
+            //-----------------------------------------------------------------
+            // mock requests based on template tags
+            //-----------------------------------------------------------------
+            document.querySelectorAll("template").forEach(function(elt){
+                if(elt.getAttribute("url")){
+                    var configDelay = elt.getAttribute("delay");
+                    if (configDelay) {
+                        var delay = Number.parseInt(configDelay);
+                    }
+                    MockRequests.setDynamicMockUrlResponse(elt.getAttribute("url"),
+                        {dynamicResponseModFn:
+                                function(request, response, parameters) {
+                                    log("demo:request", "A mock request was made: ", request, response, parameters)
+                                    return interpolate(elt.innerHTML, { ...parameters, ...Object.fromEntries(new URLSearchParams(request)) });
+                                },
+                            delay: delay,
+                            usePathnameForAllQueries: true});
+                }
+            });
+
+            log('demo:htmx-loading', "loading htmx & hyperscript...")
+            addScript("https://unpkg.com/htmx.org");
+            addScript("https://unpkg.com/hyperscript.org");
+            initHtmxAndHyperscript();
+        }
     }
-}
 
-addScript("https://unpkg.com/htmx.org");
-addScript("https://unpkg.com/hyperscript.org");
-addScript("https://unpkg.com/mock-requests@1.3.2/index.js");
-initMockRequests();
+    document.addEventListener('DOMContentLoaded', function () {
+        disableThings();
+        log('demo:mock-request-loading', "loading mock-request library...")
+        addScript("https://unpkg.com/mock-requests@1.3.2/index.js");
+        initMockRequests();
+    }, false);
+})();