Some refactoring, more work on the custom theme generator

assets/themes/bookcases/Bookcases.json

@@ -0,0 +1,67 @@
+{
+  "layers": [
+    {
+      "id": "bookcases",
+      "title": {
+        "render": "Bookcase"
+      },
+      "icon": "./assets/themes/bookcases/bookcase.svg",
+      "color": "#000000",
+      "description": "A public bookcase",
+      "minzoom": "12",
+      "overpassTags": "amenity=public_bookcase",
+      "presets": [
+        {
+          "title": "Bookcase",
+          "description": "A bookcase is a small cabinet where everyone can take or leave a book",
+          "icon": "./assets/bookcase.svg",
+          "tags": "amenity=public_bookcase"
+        }
+      ],
+      "tagRenderings": [
+        {
+          "key": "brand",
+          "addExtraTags": "",
+          "mappings": [
+            {
+              "if": "brand=Little Free Library",
+              "then": "Part of the network Little Free Library"
+            }
+          ],
+          "question": "Is this bookcase part of a network?",
+          "render": "Part of {brand}",
+          "type": "text"
+        },
+        {
+          "key": "",
+          "addExtraTags": "",
+          "mappings": [
+            {
+              "if": "books=children",
+              "then": "Mainly books for kids"
+            },
+            {
+              "if": "books=adult",
+              "then": "Mainly books for adults"
+            },
+            {
+              "if": "books=adult;children",
+              "then": "Books for both adults and children"
+            }
+          ],
+          "question": "Which books can be found here?",
+          "render": "",
+          "type": "text"
+        }
+      ]
+    }
+  ],
+  "icon": "./assets/bookcase.svg",
+  "name": "bookcases",
+  "title": "Bookcases",
+  "description": "Welcome to open Bookcase Map",
+  "language": "en",
+  "startLat": "0",
+  "startLon": "0",
+  "startZoom": "12"
+}

assets/themes/bookcases/bookcase.svg

@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   viewBox="0 0 64 64"
+   height="64"
+   width="64"
+   id="svg109"
+   version="1.1"
+   sodipodi:docname="Public_bookcase-14.svg"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)">
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1920"
+     inkscape:window-height="1001"
+     id="namedview6"
+     showgrid="false"
+     inkscape:zoom="8.4285714"
+     inkscape:cx="21.124627"
+     inkscape:cy="25.918314"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer2" />
+  <metadata
+     id="metadata115">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs113" />
+  <g
+     inkscape:groupmode="layer"
+     id="layer1"
+     inkscape:label="background">
+    <ellipse
+       style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:0.49738699;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+       id="path819"
+       cx="31.967007"
+       cy="32.109043"
+       rx="32.00938"
+       ry="31.946436" />
+  </g>
+  <g
+     inkscape:groupmode="layer"
+     id="layer2"
+     inkscape:label="icon">
+    <path
+       id="path4176"
+       d="M 32.123859,10.440678 8.6779661,17.139504 v 3.349413 L 32.123859,13.79009 55.569753,20.488917 v -3.349413 z m -11.59865,11.964995 c -0.522431,0.02077 -1.041409,0.124297 -1.556954,0.320538 v 20.835706 c 0,0 8.38755,-0.322013 10.525792,7.817477 V 29.497007 c -1.631616,-3.400613 -5.311804,-7.237191 -8.968838,-7.091334 z m 8.968838,28.973731 C 24.066203,47.228261 16.331902,46.172115 16.331902,46.172115 V 26.376556 l -2.629816,-1.046692 v 23.445893 l 15.791961,5.207293 h 5.259628 L 50.545632,48.775757 V 25.329864 l -2.629812,1.046692 v 20.835709 l -13.162145,4.167139 c -1.754454,-0.663351 -3.795938,-0.545319 -5.259628,0 z M 45.279464,22.726221 C 40.03579,22.448689 33.986193,25.566152 30.808953,28.247518 v 22.045945 c 2.933724,-2.408355 8.190227,-5.573982 14.470511,-6.208191 z"
+       style="fill:#734a08;fill-opacity:1;stroke:none;stroke-width:3.34941339"
+       inkscape:connector-curvature="0" />
+  </g>
+</svg>