Add support for Edge browser

11 files changed, 100 insertions, 20 deletions

diff --git a/ext/bg/background.html b/ext/bg/background.html
index 3262f2a1..5978f10f 100644
--- a/ext/bg/background.html
+++ b/ext/bg/background.html
@@ -10,6 +10,8 @@
         <script src="/mixed/lib/jszip.min.js"></script>
         <script src="/mixed/lib/wanakana.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/bg/js/anki.js"></script>
         <script src="/bg/js/api.js"></script>
         <script src="/bg/js/audio.js"></script>
diff --git a/ext/bg/context.html b/ext/bg/context.html
index 01b4fb30..198ccd42 100644
--- a/ext/bg/context.html
+++ b/ext/bg/context.html
@@ -32,6 +32,8 @@
         <script src="/mixed/lib/jquery.min.js"></script>
         <script src="/mixed/lib/bootstrap-toggle/bootstrap-toggle.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/bg/js/api.js"></script>
         <script src="/bg/js/options.js"></script>
         <script src="/bg/js/util.js"></script>
diff --git a/ext/bg/js/search.js b/ext/bg/js/search.js
index f08f22da..a3382398 100644
--- a/ext/bg/js/search.js
+++ b/ext/bg/js/search.js
@@ -25,7 +25,7 @@ class DisplaySearch extends Display {
         this.query = $('#query').on('input', this.onSearchInput.bind(this));
         this.intro = $('#intro');
 
-        this.dependencies = {...this.dependencies, ...{docRangeFromPoint, docSentenceExtract}};
+        this.dependencies = Object.assign({}, this.dependencies, {docRangeFromPoint, docSentenceExtract});
 
         window.wanakana.bind(this.query.get(0));
     }
diff --git a/ext/bg/js/settings.js b/ext/bg/js/settings.js
index 75082f3e..e542118c 100644
--- a/ext/bg/js/settings.js
+++ b/ext/bg/js/settings.js
@@ -116,7 +116,7 @@ async function formMainDictionaryOptionsPopulate(options) {
     select.append($('<option class="text-muted" value="">Not selected</option>'));
 
     let mainDictionary = '';
-    for (const dictRow of await utilDatabaseSummarize()) {
+    for (const dictRow of toIterable(await utilDatabaseSummarize())) {
         if (dictRow.sequenced) {
             select.append($(`<option value="${dictRow.title}">${dictRow.title}</option>`));
             if (dictRow.title === options.general.mainDictionary) {
@@ -314,12 +314,12 @@ async function dictionaryGroupsPopulate(options) {
     const dictGroups = $('#dict-groups').empty();
     const dictWarning = $('#dict-warning').hide();
 
-    const dictRows = await utilDatabaseSummarize();
+    const dictRows = toIterable(await utilDatabaseSummarize());
     if (dictRows.length === 0) {
         dictWarning.show();
     }
 
-    for (const dictRow of dictRowsSort(dictRows, options)) {
+    for (const dictRow of toIterable(dictRowsSort(dictRows, options))) {
         const dictOptions = options.dictionaries[dictRow.title] || {
             enabled: false,
             priority: 0,
@@ -581,20 +581,19 @@ async function onAnkiFieldTemplatesReset(e) {
  */
 
 async function getBrowser() {
-    if (typeof chrome !== "undefined") {
-        if (typeof browser !== "undefined") {
-            try {
-                const info = await browser.runtime.getBrowserInfo();
-                if (info.name === "Fennec") {
-                    return "firefox-mobile";
-                }
-            } catch (e) { }
-            return "firefox";
-        } else {
-            return "chrome";
-        }
+    if (EXTENSION_IS_BROWSER_EDGE) {
+        return 'edge';
+    }
+    if (typeof browser !== 'undefined') {
+        try {
+            const info = await browser.runtime.getBrowserInfo();
+            if (info.name === 'Fennec') {
+                return 'firefox-mobile';
+            }
+        } catch (e) { }
+        return 'firefox';
     } else {
-        return "edge";
+        return 'chrome';
     }
 }
 
diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index 34b06ddb..3dc7c900 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -87,6 +87,20 @@ function utilDatabasePurge() {
     return utilBackend().translator.database.purge();
 }
 
-function utilDatabaseImport(data, progress, exceptions) {
+async function utilDatabaseImport(data, progress, exceptions) {
+    // Edge cannot read data on the background page due to the File object
+    // being created from a different window. Read on the same page instead.
+    if (EXTENSION_IS_BROWSER_EDGE) {
+        data = await utilReadFile(data);
+    }
     return utilBackend().translator.database.importDictionary(data, progress, exceptions);
 }
+
+function utilReadFile(file) {
+    return new Promise((resolve, reject) => {
+        const reader = new FileReader();
+        reader.onload = () => resolve(reader.result);
+        reader.onerror = () => reject(reader.error);
+        reader.readAsBinaryString(file);
+    });
+}
diff --git a/ext/bg/search.html b/ext/bg/search.html
index ce156578..05c0daab 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -37,6 +37,8 @@
         <script src="/mixed/lib/jquery.min.js"></script>
         <script src="/mixed/lib/wanakana.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/bg/js/api.js"></script>
         <script src="/bg/js/audio.js"></script>
         <script src="/bg/js/dictionary.js"></script>
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index c6677018..0704140e 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -399,6 +399,8 @@
         <script src="/mixed/lib/bootstrap/js/bootstrap.min.js"></script>
         <script src="/mixed/lib/handlebars.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/bg/js/anki.js"></script>
         <script src="/bg/js/api.js"></script>
         <script src="/bg/js/dictionary.js"></script>
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 07f2d58b..0133e653 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -34,6 +34,8 @@
         <script src="/mixed/lib/jquery.min.js"></script>
         <script src="/mixed/lib/wanakana.min.js"></script>
 
+        <script src="/mixed/js/extension.js"></script>
+
         <script src="/fg/js/api.js"></script>
         <script src="/fg/js/util.js"></script>
         <script src="/fg/js/document.js"></script>
diff --git a/ext/fg/js/float.js b/ext/fg/js/float.js
index 090839a1..c0ec8a15 100644
--- a/ext/fg/js/float.js
+++ b/ext/fg/js/float.js
@@ -23,7 +23,7 @@ class DisplayFloat extends Display {
         this.autoPlayAudioTimer = null;
         this.styleNode = null;
 
-        this.dependencies = {...this.dependencies, ...{docRangeFromPoint, docSentenceExtract}};
+        this.dependencies = Object.assign({}, this.dependencies, {docRangeFromPoint, docSentenceExtract});
 
         $(window).on('message', utilAsync(this.onMessage.bind(this)));
     }
diff --git a/ext/manifest.json b/ext/manifest.json
index e3d7718b..baec58f6 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -11,10 +11,14 @@
     },
 
     "author": "Alex Yatskov",
-    "background": {"page": "bg/background.html"},
+    "background": {
+        "page": "bg/background.html",
+        "persistent": true
+    },
     "content_scripts": [{
         "matches": ["http://*/*", "https://*/*", "file://*/*"],
         "js": [
+            "mixed/js/extension.js",
             "fg/js/api.js",
             "fg/js/document.js",
             "fg/js/popup.js",
diff --git a/ext/mixed/js/extension.js b/ext/mixed/js/extension.js
new file mode 100644
index 00000000..d7085e5b
--- /dev/null
+++ b/ext/mixed/js/extension.js
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2019  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * 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/>.
+ */
+
+
+function toIterable(value) {
+    if (typeof Symbol !== 'undefined' && typeof value[Symbol.iterator] !== 'undefined') {
+        return value;
+    }
+
+    const array = JSON.parse(JSON.stringify(value));
+    return Array.isArray(array) ? array : [];
+}
+
+function extensionHasChrome() {
+    try {
+        return typeof chrome === 'object' && chrome !== null;
+    } catch (e) {
+        return false;
+    }
+}
+
+function extensionHasBrowser() {
+    try {
+        return typeof browser === 'object' && browser !== null;
+    } catch (e) {
+        return false;
+    }
+}
+
+const EXTENSION_IS_BROWSER_EDGE = (
+    extensionHasBrowser() &&
+    (!extensionHasChrome() || (typeof chrome.runtime === 'undefined' && typeof browser.runtime !== 'undefined'))
+);
+
+if (EXTENSION_IS_BROWSER_EDGE) {
+    // Edge does not have chrome defined.
+    chrome = browser;
+}