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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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38
templates/predict_pathway.html
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@ -137,6 +137,25 @@
</div>
{# prettier-ignore-start #}
<script>
// 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;
}
function predictKetcherToTextInput() {
$("#predict-smiles").val(this.ketcher.getSmiles());
}
@ -171,10 +190,21 @@
let smiles = $("#predict-smiles").val().trim();
// If SMILES input is empty, try to get from Ketcher
if (!smiles && window.predictKetcher) {
smiles = window.predictKetcher.getSmiles().trim();
if (smiles) {
$("#predict-smiles").val(smiles);
if (!smiles) {
const ketcher = getKetcherInstance('predict-ketcher');
if (ketcher && ketcher.getSmiles) {
try {
smiles = ketcher.getSmiles().trim();
if (smiles) {
$("#predict-smiles").val(smiles);
}
} catch (err) {
console.error("Failed to get SMILES from Ketcher:", err);
alert("Unable to extract structure from the drawing editor. Please enter a SMILES string instead.");
button.prop("disabled", false);
button.text("Predict");
return;
}
}
}