refactoring

scripts/content/content.js

@@ -0,0 +1,49 @@
+chrome.runtime.onMessage.addListener(
+    function (request, sender, sendResponse) {
+        if (!request.action) return;
+        // console.log("Recieved request:",request);
+        switch (request.action) {
+            case ACTION_EXTRACT:
+                let data = extract(request.itemsSelector, request.fieldSelectors);
+                if (sendResponse) sendResponse(data);
+                break;
+            case ACTION_GOTO_URL:
+                window.location.replace(request.url);
+                if (sendResponse) sendResponse(request.url);
+                break;
+            case ACTION_REPORT_IN:
+                if (sendResponse) sendResponse(request.action);
+                break;
+            case ACTION_QUERY_URL:
+                if (sendResponse) sendResponse(window.location.href);
+                break;
+            default:
+                break;
+        }
+    }
+);
+
+function extract(itemsSelector, fieldSelectors) {
+    // let fieldNotFound = false;
+    let items = Array.from(document.querySelectorAll(itemsSelector));
+    if (!items.length) return [];
+    let results = items.map(
+        item => {
+            return fieldSelectors.map(
+                selector => {
+                    let [cls, attr] = selector.split('@').slice(0, 2);
+                    // TODO: close tab to cancel task tip
+                    // if (fieldNotFound) return;
+                    let fieldVals = Array.from(item.querySelectorAll(cls));
+                    // if (!fieldVals.length) {
+                    //     fieldNotFound = true;
+                    //     return;
+                    // }
+                    return fieldVals.map(find => attr ? find[attr] : find.textContent.trim()).join('\n')
+                }
+            )
+        }
+    );
+    // return fieldNotFound ? [] : results
+    return results;
+}