From 9f953da820c2f4e633ba10c66403005a71dcef54 Mon Sep 17 00:00:00 2001
From: Stefan Kuethe <stefan.kuethe@eoda.de>
Date: Fri, 6 Sep 2024 10:08:51 +0200
Subject: [PATCH] Add r-bindings

---
 package.json             |  3 +-
 r-bindings/rtabulator.js | 94 ++++++++++++++++++++++++++++++++++++++++
 srcjs/index-r.js         | 26 +++++++++++
 3 files changed, 122 insertions(+), 1 deletion(-)
 create mode 100644 r-bindings/rtabulator.js
 create mode 100644 srcjs/index-r.js

diff --git a/package.json b/package.json
index 6a42a3b..bae73e8 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,8 @@
     "build": "esbuild srcjs/index.js --bundle --minify --outfile=pytabulator/srcjs/tabulator-bindings.js",
     "build-dev": "esbuild srcjs/index.js --bundle --outfile=pytabulator/srcjs/tabulator-bindings.js",
     "prettier": "prettier srcjs --write",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build-r-dev": "esbuild srcjs/index-r.js --bundle --outfile=r-bindings/rtabulator.js"
   },
   "author": "Stefan Kuethe",
   "license": "MIT"
diff --git a/r-bindings/rtabulator.js b/r-bindings/rtabulator.js
new file mode 100644
index 0000000..eeced8d
--- /dev/null
+++ b/r-bindings/rtabulator.js
@@ -0,0 +1,94 @@
+(() => {
+  // srcjs/events.js
+  function addEventListeners(table, el) {
+    table.on("rowClick", function(e, row) {
+      const inputName = `${el.id}_row_clicked`;
+      console.log(inputName, row.getData());
+      Shiny.onInputChange(inputName, row.getData());
+    });
+    table.on("rowClick", (e, row) => {
+      const inputName = `${el.id}_rows_selected`;
+      const data = table.getSelectedRows().map((row2) => row2.getData());
+      console.log(inputName, data);
+      Shiny.onInputChange(inputName, data);
+    });
+    table.on("cellEdited", function(cell) {
+      const inputName = `${el.id}_row_edited`;
+      console.log(inputName, cell.getData());
+      Shiny.onInputChange(inputName, cell.getData());
+    });
+    table.on("dataFiltered", function(filters, rows) {
+      const inputName = `${el.id}_data_filtered`;
+      const data = rows.map((row) => row.getData());
+      console.log(inputName, data);
+      Shiny.onInputChange(inputName, data);
+    });
+  }
+
+  // srcjs/widget.js
+  function run_calls(el, table, calls) {
+    calls.forEach(([method_name, options]) => {
+      if (method_name === "getData") {
+        console.log("custom call");
+        Shiny.onInputChange(`${el.id}_data`, table.getData());
+        return;
+      }
+      if (method_name === "deleteSelectedRows") {
+        console.log("custom call");
+        const rows = table.getSelectedRows();
+        rows.forEach((row) => {
+          console.log(row.getIndex());
+          table.deleteRow(row.getIndex());
+        });
+        return;
+      }
+      console.log(method_name, options);
+      table[method_name](...options);
+    });
+  }
+  var TabulatorWidget = class {
+    constructor(container, data, options) {
+      options.data = data;
+      this._container = container;
+      console.log("columns", options.columns);
+      if (options.columns == null)
+        options.autoColumns = true;
+      this._table = new Tabulator(this._container, options);
+      if (typeof Shiny === "object") {
+        addEventListeners(this._table, this._container);
+        this._addShinyMessageHandler();
+      }
+    }
+    _addShinyMessageHandler() {
+      const messageHandlerName = `tabulator-${this._container.id}`;
+      Shiny.addCustomMessageHandler(messageHandlerName, (payload) => {
+        console.log(payload);
+        run_calls(this._container, this._table, payload.calls);
+      });
+    }
+    getTable() {
+      return this._table;
+    }
+  };
+
+  // srcjs/index-r.js
+  function tabulatorFactory(widgetElement, width, height) {
+    let table = null;
+    function renderValue(payload) {
+      console.log(payload);
+      if (payload.options === null) {
+        payload.options = {};
+      }
+      const widget = new TabulatorWidget(widgetElement, payload.data, payload.options);
+      table = widget.getTable();
+    }
+    function resize(width2, height2) {
+    }
+    return { renderValue, resize };
+  }
+  HTMLWidgets.widget({
+    name: "rtabulator",
+    type: "output",
+    factory: tabulatorFactory
+  });
+})();
diff --git a/srcjs/index-r.js b/srcjs/index-r.js
new file mode 100644
index 0000000..414704e
--- /dev/null
+++ b/srcjs/index-r.js
@@ -0,0 +1,26 @@
+import { TabulatorWidget } from "./widget";
+
+function tabulatorFactory(widgetElement, width, height) {
+  let table = null;
+
+  function renderValue(payload) {
+    console.log(payload);
+    if (payload.options === null) {
+      payload.options = {};
+    }
+    const widget = new TabulatorWidget(widgetElement, payload.data, payload.options);
+    table = widget.getTable();
+  }
+
+  function resize(width, height) {
+    // not implemented yet
+  }
+
+  return { renderValue, resize };
+}
+
+HTMLWidgets.widget({
+  name: "rtabulator",
+  type: "output",
+  factory: tabulatorFactory,
+});
\ No newline at end of file