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js: Bypass our own dialogue box when loading

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By constructing the <input type=file> off screen and activating it from
JavaScript, we can jump straight to the browser's upload dialogue box
without interposing our own one.  This gives a smoother experience, and
also avoids the difficult-to-handle <input type=file> ever being
visible.
This commit is contained in:
Ben Harris
2022-12-03 23:51:12 +00:00
parent db5d3bf10e
commit f8ed76f815
1 changed files with 3 additions and 7 deletions
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10
emccpre.js
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@ -391,13 +391,10 @@ function initPuzzle() {
document.getElementById("load").onclick = function(event) { document.getElementById("load").onclick = function(event) {
if (dlg_dimmer === null) { if (dlg_dimmer === null) {
dialog_init("Upload saved-game file");
var input = document.createElement("input"); var input = document.createElement("input");
input.type = "file"; input.type = "file";
input.multiple = false; input.multiple = false;
dlg_form.appendChild(input); input.addEventListener("change", function(event) {
dlg_form.appendChild(document.createElement("br"));
dialog_launch(function(event) {
if (input.files.length == 1) { if (input.files.length == 1) {
var file = input.files.item(0); var file = input.files.item(0);
var reader = new FileReader(); var reader = new FileReader();
@ -407,10 +404,9 @@ function initPuzzle() {
}); });
reader.readAsText(file); reader.readAsText(file);
} }
dialog_cleanup();
}, function(event) {
dialog_cleanup();
}); });
input.click();
onscreen_canvas.focus();
} }
}; };