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Don't flood event bridge with raise/lower keyboard messages from HTML

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This commit is contained in:
David Rowe 2016-09-28 12:51:00 +13:00
parent bc8c400448
commit ec00129988
1 changed files with 10 additions and 7 deletions
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17
interface/resources/html/raiseAndLowerKeyboard.js
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@ -11,6 +11,7 @@
var POLL_FREQUENCY = 500; // ms var POLL_FREQUENCY = 500; // ms
var MAX_WARNINGS = 3; var MAX_WARNINGS = 3;
var numWarnings = 0; var numWarnings = 0;
var isKeyboardRaised = false;
function shouldRaiseKeyboard() { function shouldRaiseKeyboard() {
if (document.activeElement.nodeName == "INPUT" || document.activeElement.nodeName == "TEXTAREA") { if (document.activeElement.nodeName == "INPUT" || document.activeElement.nodeName == "TEXTAREA") {
@ -28,13 +29,15 @@
}; };
setInterval(function () { setInterval(function () {
var event = shouldRaiseKeyboard() ? "_RAISE_KEYBOARD" : "_LOWER_KEYBOARD"; if (isKeyboardRaised !== shouldRaiseKeyboard()) {
if (typeof EventBridge != "undefined") { isKeyboardRaised = !isKeyboardRaised;
EventBridge.emitWebEvent(event); if (typeof EventBridge != "undefined") {
} else { EventBridge.emitWebEvent(isKeyboardRaised ? "_RAISE_KEYBOARD" : "_LOWER_KEYBOARD");
if (numWarnings < MAX_WARNINGS) { } else {
console.log("WARNING: no global EventBridge object found"); if (numWarnings < MAX_WARNINGS) {
numWarnings++; console.log("WARNING: no global EventBridge object found");
numWarnings++;
}
} }
} }
}, POLL_FREQUENCY); }, POLL_FREQUENCY);