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-rw-r--r--ext/bg/js/api.js29
-rw-r--r--ext/bg/js/backend.js1
2 files changed, 30 insertions, 0 deletions
diff --git a/ext/bg/js/api.js b/ext/bg/js/api.js
index f768e6f9..94a70c34 100644
--- a/ext/bg/js/api.js
+++ b/ext/bg/js/api.js
@@ -241,3 +241,32 @@ function apiFrameInformationGet(sender) {
const frameId = sender.frameId;
return Promise.resolve({frameId});
}
+
+function apiInjectStylesheet(css, sender) {
+ if (!sender.tab) {
+ return Promise.reject(new Error('Invalid tab'));
+ }
+
+ const tabId = sender.tab.id;
+ const frameId = sender.frameId;
+ const details = {
+ code: css,
+ runAt: 'document_start',
+ cssOrigin: 'user',
+ allFrames: false
+ };
+ if (typeof frameId === 'number') {
+ details.frameId = frameId;
+ }
+
+ return new Promise((resolve, reject) => {
+ chrome.tabs.insertCSS(tabId, details, () => {
+ const e = chrome.runtime.lastError;
+ if (e) {
+ reject(new Error(e.message));
+ } else {
+ resolve();
+ }
+ });
+ });
+}
diff --git a/ext/bg/js/backend.js b/ext/bg/js/backend.js
index 453f4282..c1216d95 100644
--- a/ext/bg/js/backend.js
+++ b/ext/bg/js/backend.js
@@ -185,6 +185,7 @@ Backend.messageHandlers = {
screenshotGet: ({options}, sender) => apiScreenshotGet(options, sender),
forward: ({action, params}, sender) => apiForward(action, params, sender),
frameInformationGet: (params, sender) => apiFrameInformationGet(sender),
+ injectStylesheet: ({css}, sender) => apiInjectStylesheet(css, sender)
};
window.yomichan_backend = new Backend();