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libs/phantombot/scripts/core/jsTimers.js

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+/*
+ * Copyright (C) 2016-2020 phantombot.github.io/PhantomBot
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * jsTimers.js
+ *
+ * A general javascript module to replace Rhino's crappy timer functions
+ */
+
+var setTimeout,
+    clearTimeout,
+    setInterval,
+    clearInterval;
+
+(function() {
+    var counter = 1,
+        registry = {};
+
+    /**
+     * @function setTimeout
+     * @param {Function} fn
+     * @param {Number} delay
+     * @param {String} name
+
+     * @returns {Number}
+    */
+    setTimeout = function(fn, delay, name) {
+        var id = counter++,
+            timer;
+
+        if (name !== undefined) {
+            timer = new java.util.Timer(name);
+        } else {
+            timer = new java.util.Timer();
+        }
+
+        registry[id] = new JavaAdapter(java.util.TimerTask, {
+            run: fn
+        });
+        timer.schedule(registry[id], delay);
+
+        return id;
+    };
+
+    /**
+     * @function setInterval
+     * @param {Function} fn
+     * @param {Number} interval
+     * @param {String} name
+     *
+     * @returns {Number}
+     */
+    setInterval = function(fn, interval, name) {
+        var id = counter++,
+            timer;
+
+        if (name !== undefined) {
+            timer = new java.util.Timer(name);
+        } else {
+            timer = new java.util.Timer();
+        }
+
+        registry[id] = new JavaAdapter(java.util.TimerTask, {
+            run: fn
+        });
+        timer.schedule(registry[id], interval, interval);
+
+        return id;
+    };
+
+    /**
+     * @function clearTimeout
+     * @param {Number} id
+     */
+    clearTimeout = function(id) {
+        if (id == undefined) {
+            return;
+        }
+
+        if (registry[id] != undefined) {
+            try {
+                registry[id].cancel();
+            } catch (ex) {
+                // Cannot cancel since timer is already over.
+                // Ignore this.
+            }
+        }
+
+        delete registry[id];
+    };
+
+    /**
+     * @type {clearTimeout}
+     */
+    clearInterval = clearTimeout;
+})();