1 files changed, 68 insertions, 0 deletions
diff --git a/src/content/actions/find.ts b/src/content/actions/find.ts
new file mode 100644
index 0000000..e08d7e5
--- /dev/null
+++ b/src/content/actions/find.ts
@@ -0,0 +1,68 @@
+//
+// window.find(aString, aCaseSensitive, aBackwards, aWrapAround,
+//             aWholeWord, aSearchInFrames);
+//
+// NOTE: window.find is not standard API
+// https://developer.mozilla.org/en-US/docs/Web/API/Window/find
+
+import messages from 'shared/messages';
+import actions from 'content/actions';
+import * as consoleFrames from '../console-frames';
+
+const find = (string, backwards) => {
+  let caseSensitive = false;
+  let wrapScan = true;
+
+
+  // NOTE: aWholeWord dows not implemented, and aSearchInFrames does not work
+  // because of same origin policy
+  let found = window.find(string, caseSensitive, backwards, wrapScan);
+  if (found) {
+    return found;
+  }
+  window.getSelection().removeAllRanges();
+  return window.find(string, caseSensitive, backwards, wrapScan);
+};
+
+const findNext = async(currentKeyword, reset, backwards) => {
+  if (reset) {
+    window.getSelection().removeAllRanges();
+  }
+
+  let keyword = currentKeyword;
+  if (currentKeyword) {
+    browser.runtime.sendMessage({
+      type: messages.FIND_SET_KEYWORD,
+      keyword: currentKeyword,
+    });
+  } else {
+    keyword = await browser.runtime.sendMessage({
+      type: messages.FIND_GET_KEYWORD,
+    });
+  }
+  if (!keyword) {
+    return consoleFrames.postError('No previous search keywords');
+  }
+  let found = find(keyword, backwards);
+  if (found) {
+    consoleFrames.postInfo('Pattern found: ' + keyword);
+  } else {
+    consoleFrames.postError('Pattern not found: ' + keyword);
+  }
+
+  return {
+    type: actions.FIND_SET_KEYWORD,
+    keyword,
+    found,
+  };
+};
+
+const next = (currentKeyword, reset) => {
+  return findNext(currentKeyword, reset, false);
+};
+
+const prev = (currentKeyword, reset) => {
+  return findNext(currentKeyword, reset, true);
+};
+
+export { next, prev };