eval in page context

public/inject.js

@@ -1,13 +1,47 @@
-console.log('This runs at document start, before any document content is parsed.');
-// 保存原始的console.log函数的引用
-const originalConsoleLog = console.log;
+/**
+ * injectScript - Inject internal script to available access to the `window`
+ *
+ * @param  {type} file_path Local path of the internal script.
+ * @param  {type} tag The tag as string, where the script will be append (default: 'body').
+ * @see    {@link http://stackoverflow.com/questions/20499994/access-window-variable-from-content-script}
+ */
+function injectScript(file_path, tag) {
+    var node = document.getElementsByTagName(tag)[0];
+    if (!node) {
+        console.error('The "' + tag + '" tag is not available in the document.');
+        return;
+    }
+    var script = document.createElement('script');
+    script.setAttribute('type', 'text/javascript');
+    script.setAttribute('src', file_path);
+    node.appendChild(script);
+}
 
-// 重写console.log
-console.log = function (message) {
-    // 调用原始的console.log函数
-    originalConsoleLog("trying to open " + message + " window.");
-};
+// document.addEventListener('DOMContentLoaded', function () {
+injectScript(chrome.runtime.getURL('content.js'), 'body');
 
-window.open = function (url) {
-    console.log("trying to open " + url + " window.");
-}
+const port = chrome.runtime.connect({name: "content-script"});
+
+port.onDisconnect.addListener(function () {
+    console.error("Disconnected from port.");
+});
+
+port.onMessage.addListener(function (msg) {
+    console.log("我听到了成功的回响 :", msg);
+    window.postMessage(msg, "*")
+});
+
+window.addEventListener("message", (event) => {
+    // We only accept messages from ourselves
+    if (event.source !== window) {
+        return;
+    }
+    if (event.data.type && (event.data.type === "FROM_PAGE")) {
+        console.log(event)
+        console.log("Content script received: " + event.data.text);
+        if (port && port.postMessage) {
+            port.postMessage(event.data.text);
+        }
+    }
+}, );
+// });