summaryrefslogtreecommitdiffstats
path: root/toolkit/jetpack/sdk/keyboard/observer.js
diff options
context:
space:
mode:
authorMatt A. Tobin <email@mattatobin.com>2018-02-10 02:51:36 -0500
committerMatt A. Tobin <email@mattatobin.com>2018-02-10 02:51:36 -0500
commit37d5300335d81cecbecc99812747a657588c63eb (patch)
tree765efa3b6a56bb715d9813a8697473e120436278 /toolkit/jetpack/sdk/keyboard/observer.js
parentb2bdac20c02b12f2057b9ef70b0a946113a00e00 (diff)
parent4fb11cd5966461bccc3ed1599b808237be6b0de9 (diff)
downloadUXP-37d5300335d81cecbecc99812747a657588c63eb.tar
UXP-37d5300335d81cecbecc99812747a657588c63eb.tar.gz
UXP-37d5300335d81cecbecc99812747a657588c63eb.tar.lz
UXP-37d5300335d81cecbecc99812747a657588c63eb.tar.xz
UXP-37d5300335d81cecbecc99812747a657588c63eb.zip
Merge branch 'ext-work'
Diffstat (limited to 'toolkit/jetpack/sdk/keyboard/observer.js')
-rw-r--r--toolkit/jetpack/sdk/keyboard/observer.js58
1 files changed, 58 insertions, 0 deletions
diff --git a/toolkit/jetpack/sdk/keyboard/observer.js b/toolkit/jetpack/sdk/keyboard/observer.js
new file mode 100644
index 000000000..b8e32b95c
--- /dev/null
+++ b/toolkit/jetpack/sdk/keyboard/observer.js
@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+module.metadata = {
+ "stability": "unstable"
+};
+
+const { Class } = require("../core/heritage");
+const { EventTarget } = require("../event/target");
+const { emit } = require("../event/core");
+const { DOMEventAssembler } = require("../deprecated/events/assembler");
+const { browserWindowIterator } = require('../deprecated/window-utils');
+const { isBrowser } = require('../window/utils');
+const { observer: windowObserver } = require("../windows/observer");
+
+// Event emitter objects used to register listeners and emit events on them
+// when they occur.
+const Observer = Class({
+ implements: [DOMEventAssembler, EventTarget],
+ initialize() {
+ // Adding each opened window to a list of observed windows.
+ windowObserver.on("open", window => {
+ if (isBrowser(window))
+ this.observe(window);
+ });
+
+ // Removing each closed window form the list of observed windows.
+ windowObserver.on("close", window => {
+ if (isBrowser(window))
+ this.ignore(window);
+ });
+
+ // Making observer aware of already opened windows.
+ for (let window of browserWindowIterator()) {
+ this.observe(window);
+ }
+ },
+ /**
+ * Events that are supported and emitted by the module.
+ */
+ supportedEventsTypes: [ "keydown", "keyup", "keypress" ],
+ /**
+ * Function handles all the supported events on all the windows that are
+ * observed. Method is used to proxy events to the listeners registered on
+ * this event emitter.
+ * @param {Event} event
+ * Keyboard event being emitted.
+ */
+ handleEvent(event) {
+ emit(this, event.type, event, event.target.ownerDocument ? event.target.ownerDocument.defaultView
+ : undefined);
+ }
+});
+
+exports.observer = new Observer();