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-rw-r--r--ext/bg/js/backend.js143
1 files changed, 141 insertions, 2 deletions
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index 38dbd0f1..8ae5574c 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -397,8 +397,11 @@ class Backend {
);
}
- _onApiCommandExec({command, params}) {
- return apiCommandExec(command, params);
+ async _onApiCommandExec({command, params}) {
+ const handler = Backend._commandHandlers.get(command);
+ if (typeof handler !== 'function') { return false; }
+
+ handler(this, params);
}
_onApiAudioGetUrl({definition, source, optionsContext}) {
@@ -429,6 +432,54 @@ class Backend {
return apiClipboardGet();
}
+ // Command handlers
+
+ async _onCommandSearch(params) {
+ const url = chrome.runtime.getURL('/bg/search.html');
+ if (!(params && params.newTab)) {
+ try {
+ const tab = await Backend._findTab(1000, (url2) => (
+ url2 !== null &&
+ url2.startsWith(url) &&
+ (url2.length === url.length || url2[url.length] === '?' || url2[url.length] === '#')
+ ));
+ if (tab !== null) {
+ await Backend._focusTab(tab);
+ return;
+ }
+ } catch (e) {
+ // NOP
+ }
+ }
+ chrome.tabs.create({url});
+ }
+
+ _onCommandHelp() {
+ chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'});
+ }
+
+ _onCommandOptions(params) {
+ if (!(params && params.newTab)) {
+ chrome.runtime.openOptionsPage();
+ } else {
+ const manifest = chrome.runtime.getManifest();
+ const url = chrome.runtime.getURL(manifest.options_ui.page);
+ chrome.tabs.create({url});
+ }
+ }
+
+ async _onCommandToggle() {
+ const optionsContext = {
+ depth: 0,
+ url: window.location.href
+ };
+ const source = 'popup';
+
+ const options = await this.getOptions(optionsContext);
+ options.general.enable = !options.general.enable;
+ await this._optionsSave({source});
+ }
+
// Utilities
async _injectScreenshot(definition, fields, screenshot) {
@@ -466,6 +517,87 @@ class Backend {
definition.screenshotFileName = filename;
}
+
+ static _getTabUrl(tab) {
+ return new Promise((resolve) => {
+ chrome.tabs.sendMessage(tab.id, {action: 'getUrl'}, {frameId: 0}, (response) => {
+ let url = null;
+ if (!chrome.runtime.lastError) {
+ url = (response !== null && typeof response === 'object' && !Array.isArray(response) ? response.url : null);
+ if (url !== null && typeof url !== 'string') {
+ url = null;
+ }
+ }
+ resolve({tab, url});
+ });
+ });
+ }
+
+ static async _findTab(timeout, checkUrl) {
+ // This function works around the need to have the "tabs" permission to access tab.url.
+ const tabs = await new Promise((resolve) => chrome.tabs.query({}, resolve));
+ let matchPromiseResolve = null;
+ const matchPromise = new Promise((resolve) => { matchPromiseResolve = resolve; });
+
+ const checkTabUrl = ({tab, url}) => {
+ if (checkUrl(url, tab)) {
+ matchPromiseResolve(tab);
+ }
+ };
+
+ const promises = [];
+ for (const tab of tabs) {
+ const promise = Backend._getTabUrl(tab);
+ promise.then(checkTabUrl);
+ promises.push(promise);
+ }
+
+ const racePromises = [
+ matchPromise,
+ Promise.all(promises).then(() => null)
+ ];
+ if (typeof timeout === 'number') {
+ racePromises.push(new Promise((resolve) => setTimeout(() => resolve(null), timeout)));
+ }
+
+ return await Promise.race(racePromises);
+ }
+
+ static async _focusTab(tab) {
+ await new Promise((resolve, reject) => {
+ chrome.tabs.update(tab.id, {active: true}, () => {
+ const e = chrome.runtime.lastError;
+ if (e) { reject(e); }
+ else { resolve(); }
+ });
+ });
+
+ if (!(typeof chrome.windows === 'object' && chrome.windows !== null)) {
+ // Windows not supported (e.g. on Firefox mobile)
+ return;
+ }
+
+ try {
+ const tabWindow = await new Promise((resolve) => {
+ chrome.windows.get(tab.windowId, {}, (tabWindow) => {
+ const e = chrome.runtime.lastError;
+ if (e) { reject(e); }
+ else { resolve(tabWindow); }
+ });
+ });
+ if (!tabWindow.focused) {
+ await new Promise((resolve, reject) => {
+ chrome.windows.update(tab.windowId, {focused: true}, () => {
+ const e = chrome.runtime.lastError;
+ if (e) { reject(e); }
+ else { resolve(); }
+ });
+ });
+ }
+ } catch (e) {
+ // Edge throws exception for no reason here.
+ }
+ }
}
Backend._messageHandlers = new Map([
@@ -491,5 +623,12 @@ Backend._messageHandlers = new Map([
['clipboardGet', (self, ...args) => self._onApiClipboardGet(...args)]
]);
+Backend._commandHandlers = new Map([
+ ['search', (self, ...args) => self._onCommandSearch(...args)],
+ ['help', (self, ...args) => self._onCommandHelp(...args)],
+ ['options', (self, ...args) => self._onCommandOptions(...args)],
+ ['toggle', (self, ...args) => self._onCommandToggle(...args)]
+]);
+
window.yomichan_backend = new Backend();
window.yomichan_backend.prepare();