From dd235b16d38bcbdd67a609c1259802703d9c5364 Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Tue, 21 Jan 2020 20:07:39 +0100
Subject: [PATCH] WIP

---
 .../java/de/juplo/demo/DemoController.java    | 62 +++++++++----------
 src/main/java/de/juplo/demo/Form.java         | 36 +++++++++++
 src/main/resources/templates/form.html        | 35 +++++++++++
 3 files changed, 102 insertions(+), 31 deletions(-)
 create mode 100644 src/main/java/de/juplo/demo/Form.java
 create mode 100644 src/main/resources/templates/form.html

diff --git a/src/main/java/de/juplo/demo/DemoController.java b/src/main/java/de/juplo/demo/DemoController.java
index ddf4e06..25b500b 100644
--- a/src/main/java/de/juplo/demo/DemoController.java
+++ b/src/main/java/de/juplo/demo/DemoController.java
@@ -23,55 +23,55 @@ public class DemoController
 
 
   @RequestMapping("/")
-  public String display(
-      @ModelAttribute("form") Map<Integer, Map<String, Boolean>> form)
+  public String display(@ModelAttribute Form form)
   {
-    for (Integer id : form.keySet())
-      for (String entry : form.get(id).keySet())
-        LOG.info("{} - {}: {}", id, entry, form.get(id).get(entry));
+    for (Integer id : form.cards.keySet())
+      for (String entry : form.cards.get(id).keySet())
+        LOG.info("{} - {}: {}", id, entry, form.cards.get(id).get(entry));
 
     return "form";
   }
 
-  @RequestMapping(path = "/", params = "row")
-  public String addRow(
-      @ModelAttribute("form") Map<Integer, Map<String, Boolean>> form,
-      @RequestParam Integer row)
+  @RequestMapping(path = "/", params = "add=card")
+  public String addCard(@ModelAttribute Form form)
   {
-    LOG.info("Adding row #{}", row);
-    form.put(row, new HashMap<>());
+    Integer next =
+        form.cards
+            .keySet()
+            .stream()
+            .reduce(0, (a, b) -> a > b ? a : b) + 1;
+
+    LOG.info("Adding new card #{}", next);
+    form.cards.put(next, new HashMap<>());
     return "form";
   }
 
-  @RequestMapping(path = "/", params = "row")
-  public String removeRow(
-      @ModelAttribute("form") Map<Integer, Map<String, Boolean>> form,
-      @RequestParam Integer row)
+  @RequestMapping(path = "/", params = "remove=card")
+  public String removeCard(
+      @ModelAttribute Form form,
+      @RequestParam Integer card)
   {
-    Map<String, Boolean> content = form.remove(row);
-    LOG.info("Removed row #{} with content: {}", row, content);
+    Map<String, Boolean> content = form.cards.remove(card);
+    LOG.info("Removed card #{} with content: {}", card, content);
     return "form";
   }
 
-  @RequestMapping(path = "/", params = { "row", "entry" })
-  public String addEntry(
-      @ModelAttribute("form") Map<Integer, Map<String, Boolean>> form,
-      @RequestParam Integer row,
-      @RequestParam String entry)
+  @RequestMapping(path = "/", params = "add=row")
+  public String addRow(@ModelAttribute Form form, @RequestParam Integer card)
   {
-    LOG.info("Adding entry {} to row #{}", entry, row);
-    form.get(row).put(entry, Boolean.FALSE);
+    LOG.info("Adding row {} to card #{}", form.row.get(card), card);
+    form.cards.get(card).put(form.row.get(card), Boolean.FALSE);
     return "form";
   }
 
-  @RequestMapping(path = "/", params = { "row", "entry" })
-  public String removeEntry(
-      @ModelAttribute("form") Map<Integer, Map<String, Boolean>> form,
-      @RequestParam Integer row,
-      @RequestParam String entry)
+  @RequestMapping(path = "/", params = "remove!=card")
+  public String removeRow(@ModelAttribute Form form, @RequestParam String remove)
   {
-    Boolean value = form.get(row).remove(entry);
-    LOG.info("Removed entry {} with value {} from row #{}", entry, value, row);
+    String[] parts = remove.split(":", 2);
+    Integer card = Integer.valueOf(parts[0]);
+    String row = parts[1];
+    Boolean value = form.cards.get(card).remove(row);
+    LOG.info("Removed row {} with value {} from card #{}", row, value, card);
     return "form";
   }
 }
diff --git a/src/main/java/de/juplo/demo/Form.java b/src/main/java/de/juplo/demo/Form.java
new file mode 100644
index 0000000..382c335
--- /dev/null
+++ b/src/main/java/de/juplo/demo/Form.java
@@ -0,0 +1,36 @@
+package de.juplo.demo;
+
+
+import java.util.Map;
+
+
+/**
+ *
+ * @author Kai Moritz
+ */
+public class Form
+{
+  Map<Integer, Map<String, Boolean>> cards;
+  Map<Integer, String> row;
+
+
+  public Map<Integer, Map<String, Boolean>> getCards()
+  {
+    return cards;
+  }
+
+  public void setCards(Map<Integer, Map<String, Boolean>> cards)
+  {
+    this.cards = cards;
+  }
+
+  public Map<Integer, String> getRow()
+  {
+    return row;
+  }
+
+  public void setRow(Map<Integer, String> row)
+  {
+    this.row = row;
+  }
+}
diff --git a/src/main/resources/templates/form.html b/src/main/resources/templates/form.html
new file mode 100644
index 0000000..586a812
--- /dev/null
+++ b/src/main/resources/templates/form.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <title>Demo: Multidimensional Map With Dynamic Binding</title>
+    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
+  </head>
+  <body>
+    <nav class="navbar navbar-dark bg-primary navbar-expand navbar-dark flex-column">
+      <h2 class="navbar-brand">Demo: Multidimensional Map With Dynamic Binding</h2>
+    </nav>
+    <main class="container mt-5">
+      <form action="#" th:action="@{/}" th:object="${form}" method="get">
+        <div class="card" th:each="card : *{cards.rowSet()}">
+          <div class="card-header"><h1 th:text="|Card #${card.key}|">Card #X</h1></div>
+          <div class="card-body">
+            <div class="card-text">
+              <div class="form-group" th:each="row : ${card.value.rowSet()}">
+                <input type="checkbox" id="x" class="form-control" th:field="*{cards[__${card.key}__][__${row.key}__]}" />
+                <label for="x" th:for="${#ids.prev('cards[__${card.key}__][__${row.key}__]')}" th:text="${row.value}">ROW_NAME</label>
+                <button type="submit" name="removeRow" class="btn btn-primary" th:value="|${card.key}:${row.key}|">Remove</button>
+              </div>
+              <button type="submit" name="add" value="row" class="btn btn-primary">Add Row</button>
+            </div>
+            <div class="card-footer">
+              <button type="submit" name="remove" value="card" class="btn btn-primary">Remove Card</button>
+            </div>
+          </div>
+        </div>
+        <button type="submit" name="add" value="card" class="btn btn-primary">Add Card</button>
+      </form>
+    </main>
+  </body>
+</html>
-- 
2.20.1