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Add support for lydell’s fork of elm/virtual-dom #40

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Add support for lydell’s fork of elm/virtual-dom #40

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9a72035
Add support for lydell’s fork of elm/virtual-dom
lydell Jan 26, 2025
bd762f9
Add latest changes from lydell/virtual-dom
lydell Apr 23, 2025
042518d
Updates for latest changes from lydell/virtual-dom
lydell Jul 25, 2025
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2 changes: 1 addition & 1 deletion compiler/src/Generate/Html.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ sandwich root moduleName javascript =

<body>

<pre id="elm"></pre>
<pre data-elm id="elm"></pre>

<script>
try {
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33 changes: 30 additions & 3 deletions extra/Lamdera/Injection.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -484,6 +484,7 @@ injections outputType mode =

$lamderaContainersExtensions_

var _VirtualDom_equalEvents; // For lydell’s vdom.
function _Platform_initialize(flagDecoder, args, init, update, subscriptions, stepperBuilder)
{
var result = A2(_Json_run, flagDecoder, _Json_wrap(args ? args['flags'] : undefined));
Expand Down Expand Up @@ -542,10 +543,20 @@ injections outputType mode =
};

_VirtualDom_applyPatches = function(rootDomNode, oldVirtualNode, patches, eventNode) {
if (patches.length !== 0) {
_VirtualDom_addDomNodes(rootDomNode, oldVirtualNode, patches, eventNode);
if (typeof _VirtualDom_createTNode === 'function') { // For lydell’s vdom.
var tNode = rootDomNode.elmTree;
var diffReturn = _VirtualDom_diffHelp(oldVirtualNode, patches, eventNode, tNode);
_VirtualDom_lastDomNode = diffReturn.r;
if (_VirtualDom_lastDomNode !== rootDomNode) {
delete rootDomNode.elmTree;
_VirtualDom_lastDomNode.elmTree = tNode;
}
} else {
if (patches.length !== 0) {
_VirtualDom_addDomNodes(rootDomNode, oldVirtualNode, patches, eventNode);
}
_VirtualDom_lastDomNode = _VirtualDom_applyPatchesHelp(rootDomNode, patches);
}
_VirtualDom_lastDomNode = _VirtualDom_applyPatchesHelp(rootDomNode, patches);
// Restore the event listeners on the <a> elements:
var aElements = _VirtualDom_lastDomNode.getElementsByTagName('a');
for (var i = 0; i < aElements.length; i++) {
Expand Down Expand Up @@ -703,6 +714,10 @@ injections outputType mode =
function _VirtualDom_diff(x, y)
{
_VirtualDom_lastVNode = y;
if (typeof _VirtualDom_createTNode === 'function') // For lydell’s vdom.
{
return y;
}
var patches = [];
_VirtualDom_diffHelp(x, y, patches, 0);
return patches;
Expand All @@ -712,6 +727,18 @@ injections outputType mode =
var _VirtualDom_lastDomNode = null;
function _VirtualDom_applyPatches(rootDomNode, oldVirtualNode, patches, eventNode)
{
if (typeof _VirtualDom_createTNode === 'function') // For lydell’s vdom.
{
var tNode = rootDomNode.elmTree;
var diffReturn = _VirtualDom_diffHelp(oldVirtualNode, patches, eventNode, tNode);
_VirtualDom_lastDomNode = diffReturn.r;
if (_VirtualDom_lastDomNode !== rootDomNode) {
delete rootDomNode.elmTree;
_VirtualDom_lastDomNode.elmTree = tNode;
}
return _VirtualDom_lastDomNode;
}

if (patches.length === 0)
{
return (_VirtualDom_lastDomNode = rootDomNode);
Expand Down