Initial commit

1 files changed, 57 insertions, 0 deletions

diff --git a/wwwroot/js/keyboard.js b/wwwroot/js/keyboard.js
new file mode 100644
index 0000000..8b46639
--- /dev/null
+++ b/wwwroot/js/keyboard.js
@@ -0,0 +1,57 @@
+async function keyDownHandler(e) {
+    function isDialogChild(e) {
+        while(e = e.parentElement)
+            if(e.tagName == 'DIV' && e.classList.contains('dialog'))
+                return true;
+        return false;
+    }
+
+    var tag = document.activeElement.tagName;
+    if((tag == 'INPUT' || (tag == 'TEXTAREA' && e.ctrlKey)) && e.key == 'Enter') {
+        var element = document.activeElement;
+        while(element = element.parentElement) {
+            if(element.tagName == 'FORM') {
+                element
+                    .querySelectorAll('input,textarea')
+                    .forEach(e => e.dispatchEvent(new Event('change')));
+                element.requestSubmit();
+                e.preventDefault();
+                return;
+            }
+        }
+    }
+
+    if((tag == 'INPUT' || tag == 'TEXTAREA') && e.key != 'Escape')
+        return;
+
+    var element = Array.from(document.querySelectorAll('div.dialog'))
+        .filter(e => e.style.visibility == 'visible')
+        .map(e => ({ element: e, zIndex: parseInt(e.style.zIndex) }))
+        .sort((a, b) => b.zIndex - a.zIndex)
+        .map(e => e.element)[0];
+
+    if(element) {
+        await window.dialogObjects
+            .find(d => d.element == element)
+            .dialogObject
+            .invokeMethodAsync('KeyHandler', e.key);
+        e.preventDefault();
+        return;
+    }
+
+    var button = Array.from(document.getElementsByTagName('button'))
+        .filter(b => typeof(b.dataset.keyboardShortcut) == 'string')
+        .filter(b => !isDialogChild(b))
+        .find(b => b.dataset.keyboardShortcut == e.key);
+
+    if(!e.ctrlKey && button) {
+        button.click();
+        e.preventDefault();
+        return;
+    }
+
+    if(typeof pageKeyDownHandler == 'function')
+        pageKeyDownHandler(e);
+}
+
+window.onload = () => document.onkeydown = keyDownHandler;
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