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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2020-07-10 22:12:14 -0400
committerGitHub <noreply@github.com>2020-07-10 22:12:14 -0400
commit59c224d99d7c871b7864da5cd09ec60dc729e3d9 (patch)
tree66e6357c3e0f876321a7c58b3b2b854f1781b933 /ext
parentf76a6ff1e320646098620a6109919ddb8dbcf747 (diff)
Add support for async vs non-async (#656)
Diffstat (limited to 'ext')
-rw-r--r--ext/fg/js/frontend.js31
1 files changed, 23 insertions, 8 deletions
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 86dcf57a..67dbcf4b 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -63,9 +63,9 @@ class Frontend {
this._updatePopupToken = null;
this._runtimeMessageHandlers = new Map([
- ['popupSetVisibleOverride', this._onMessagePopupSetVisibleOverride.bind(this)],
- ['rootPopupRequestInformationBroadcast', this._onMessageRootPopupRequestInformationBroadcast.bind(this)],
- ['requestDocumentInformationBroadcast', this._onMessageRequestDocumentInformationBroadcast.bind(this)]
+ ['popupSetVisibleOverride', {async: false, handler: this._onMessagePopupSetVisibleOverride.bind(this)}],
+ ['rootPopupRequestInformationBroadcast', {async: false, handler: this._onMessageRootPopupRequestInformationBroadcast.bind(this)}],
+ ['requestDocumentInformationBroadcast', {async: false, handler: this._onMessageRequestDocumentInformationBroadcast.bind(this)}]
]);
}
@@ -209,12 +209,27 @@ class Frontend {
}
_onRuntimeMessage({action, params}, sender, callback) {
- const handler = this._runtimeMessageHandlers.get(action);
- if (typeof handler !== 'function') { return false; }
+ const messageHandler = this._runtimeMessageHandlers.get(action);
+ if (typeof messageHandler === 'undefined') { return false; }
- const result = handler(params, sender);
- callback(result);
- return false;
+ const {handler, async} = messageHandler;
+
+ try {
+ const promiseOrResult = handler(params, sender);
+ if (async) {
+ promiseOrResult.then(
+ (result) => callback({result}),
+ (error) => callback({error: errorToJson(error)})
+ );
+ return true;
+ } else {
+ callback({result: promiseOrResult});
+ return false;
+ }
+ } catch (error) {
+ callback({error: errorToJson(error)});
+ return false;
+ }
}
_onZoomChanged({newZoomFactor}) {