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fix: more defensive ketcher reference

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This commit is contained in:
Tobias O
2025-11-13 20:47:20 +13:00
parent 39faab3d11
commit 343af31387
2 changed files with 90 additions and 10 deletions
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62
templates/index/index.html
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@ -256,6 +256,31 @@
<script language="javascript">
var currentPackage = "{{ meta.current_package.url }}";
// Helper function to safely get Ketcher instance from iframe
function getKetcherInstance(iframeId) {
const ketcherFrame = document.getElementById(iframeId);
if (!ketcherFrame) {
console.error("Ketcher iframe not found:", iframeId);
return null;
}
try {
if (
"contentWindow" in ketcherFrame &&
ketcherFrame.contentWindow.ketcher
) {
return ketcherFrame.contentWindow.ketcher;
}
} catch (err) {
console.error(
"Cannot access Ketcher iframe - possible CORS issue:",
err,
);
}
return null;
}
// Discourse API integration is now handled by discourse-api.js
// Function to render Discourse topics into cards
@ -359,10 +384,16 @@
}, 300);
// Transfer SMILES from Ketcher to text input if available
if (window.indexKetcher && window.indexKetcher.getSmiles) {
const smiles = window.indexKetcher.getSmiles();
if (smiles && smiles.trim() !== "") {
$("#index-form-text-input").val(smiles);
const ketcher = getKetcherInstance("index-ketcher");
if (ketcher && ketcher.getSmiles) {
try {
const smiles = ketcher.getSmiles();
if (smiles && smiles.trim() !== "") {
$("#index-form-text-input").val(smiles);
}
} catch (err) {
console.error("Failed to sync Ketcher to text input:", err);
// Non-critical error, just log it
}
}
}
@ -431,13 +462,32 @@
var textSmiles = "";
// Check if we're in Ketcher mode and extract SMILES
if ($('input[type="checkbox"]').is(":checked") && window.indexKetcher) {
textSmiles = window.indexKetcher.getSmiles().trim();
if ($('input[type="checkbox"]').is(":checked")) {
// Use the robust getter function
const ketcher = getKetcherInstance("index-ketcher");
if (ketcher && ketcher.getSmiles) {
try {
textSmiles = ketcher.getSmiles().trim();
} catch (err) {
console.error("Failed to get SMILES from Ketcher:", err);
alert(
"Unable to extract structure from the drawing editor. Please try again or switch to SMILES input mode.",
);
return;
}
} else {
console.warn("Ketcher not available, possibly still loading");
alert(
"The drawing editor is still loading. Please wait a moment and try again.",
);
return;
}
} else {
textSmiles = $("#index-form-text-input").val().trim();
}
if (textSmiles === "") {
alert("Please enter a SMILES string or draw a structure.");
return;
}