Extract loading and closing bergamot into a helper script.

Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>

layouts/shortcodes/bergamot_js_css.html

@@ -75,10 +75,49 @@ const renderRules =
     LatexSym @ latex(?s, ?l) <- sym(?s), tostring(?s, ?l_1), join(["\\\\text{", ?l_1,"}"], ?l);
     LatexCall @ latex(?c, ?l) <- call(?c, ?n, ?ts), nonempty(?ts), latexlist(?ts, ?lts_1), intercalate(", ", ?lts_1, ?lts_2), join(?lts_2, ?lts_3), join(["\\\\text{", ?n, "}", "(", ?lts_3, ")"], ?l);
 `;
-function runBergamot(nodeId, inputPrompt, rules, renderRules, query) {
+
+const loadedWidgets = {};
+const getButtons = (inputGroup) => {
+    return {
+        play: inputGroup.querySelector(".bergamot-play"),
+        reset: inputGroup.querySelector(".bergamot-reset"),
+        close: inputGroup.querySelector(".bergamot-close"),
+    }
+}
+const setRunning = (inputGroup, running) => {
+    if (inputGroup !== null) {
+        const buttons = getButtons(inputGroup);
+        if (buttons.play) buttons.play.classList.toggle("bergamot-hidden", running);
+        if (buttons.reset) buttons.reset.classList.toggle("bergamot-hidden", !running);
+        if (buttons.close) buttons.close.classList.toggle("bergamot-hidden", !running);
+    }
+}
+
+window.Bergamot = {};
+window.Bergamot.run = (inputGroup, nodeId, inputPrompt, rules, renderRules, query) => {
     var app = Elm.Main.init({
         node: document.getElementById(nodeId),
         flags: { renderRules, inputRules: inputPrompt, rules , query }
     });
+    loadedWidgets[nodeId] = { app, parentNode: inputGroup ? inputGroup.parentElement : null };
+    setRunning(inputGroup, true);
+};
+window.Bergamot.runPreset = (inputGroup, nodeId, presetName) => {
+    const preset = window.Bergamot.presets[presetName];
+    window.Bergamot.run(inputGroup, nodeId, preset.inputPrompt, preset.rules, renderRules, preset.query || "");
+};
+window.Bergamot.close = (inputGroup, nodeId) => {
+    if (!(nodeId in loadedWidgets)) return;
+
+    const placeholderDiv = document.createElement('div');
+    placeholderDiv.id = nodeId;
+
+    const widget = loadedWidgets[nodeId];
+    const elmRoot = widget.parentNode.querySelector(".bergamot-root");
+    elmRoot.replaceWith(placeholderDiv)
+    delete loadedWidgets[nodeId];
+    setRunning(inputGroup, false);
 }
+window.Bergamot.presets = {};
+
 </script>

layouts/shortcodes/bergamot_widget.html

@@ -1,4 +1,4 @@
 <div id="{{ .Get "id" }}"></div>
 <script>
-    runBergamot('{{ .Get "id" }}', '{{ .Get "prompt" }}', '{{ .Inner }}', renderRules, '{{ .Get "query" }}');
+    window.Bergamot.run(null, '{{ .Get "id" }}', '{{ .Get "prompt" }}', '{{ .Inner }}', renderRules, '{{ .Get "query" }}');
 </script>