Merge pull request #142 from ueokande/find-mode

[WIP] Find mode

1 files changed, 55 insertions, 0 deletions

diff --git a/src/content/actions/find.js b/src/content/actions/find.js
new file mode 100644
index 0000000..80d6210
--- /dev/null
+++ b/src/content/actions/find.js
@@ -0,0 +1,55 @@
+//
+// 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 actions from 'content/actions';
+import * as consoleFrames from '../console-frames';
+
+const postPatternNotFound = (pattern) => {
+  return consoleFrames.postError(
+    window.document,
+    'Pattern not found: ' + pattern);
+};
+
+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
+  return window.find(string, caseSensitive, backwards, wrapScan);
+};
+
+const findNext = (keyword, reset, backwards) => {
+  if (reset) {
+    window.getSelection().removeAllRanges();
+  }
+
+  let found = find(keyword, backwards);
+  if (!found) {
+    window.getSelection().removeAllRanges();
+    found = find(keyword, backwards);
+  }
+  if (!found) {
+    postPatternNotFound(keyword);
+  }
+  return {
+    type: actions.FIND_SET_KEYWORD,
+    keyword,
+    found,
+  };
+};
+
+const next = (keyword, reset) => {
+  return findNext(keyword, reset, false);
+};
+
+const prev = (keyword, reset) => {
+  return findNext(keyword, reset, true);
+};
+
+export { next, prev };