1 files changed, 117 insertions, 0 deletions
diff --git a/toolkit/modules/FindBarContent.sys.mjs b/toolkit/modules/FindBarContent.sys.mjs
new file mode 100644
index 0000000000..8b34d93f9d
--- /dev/null
+++ b/toolkit/modules/FindBarContent.sys.mjs
@@ -0,0 +1,117 @@
+// vim: set ts=2 sw=2 sts=2 tw=80:
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
+
+/* Please keep in sync with toolkit/content/widgets/findbar.js */
+const FIND_NORMAL = 0;
+const FIND_TYPEAHEAD = 1;
+const FIND_LINKS = 2;
+
+export class FindBarContent {
+  constructor(actor) {
+    this.actor = actor;
+
+    this.findMode = 0;
+    this.inQuickFind = false;
+
+    this.addedEventListener = false;
+  }
+
+  start(event) {
+    this.inPassThrough = true;
+  }
+
+  startQuickFind(event, autostart = false) {
+    if (!this.addedEventListener) {
+      this.addedEventListener = true;
+      Services.els.addSystemEventListener(
+        this.actor.document.defaultView,
+        "mouseup",
+        this,
+        false
+      );
+    }
+
+    let mode = FIND_TYPEAHEAD;
+    if (
+      event.charCode == "'".charAt(0) ||
+      (autostart && FindBarContent.typeAheadLinksOnly)
+    ) {
+      mode = FIND_LINKS;
+    }
+
+    // Set findMode immediately (without waiting for child->parent->child roundtrip)
+    // to ensure we pass any further keypresses, too.
+    this.findMode = mode;
+    this.passKeyToParent(event);
+  }
+
+  updateState(data) {
+    this.findMode = data.findMode;
+    this.inQuickFind = data.hasQuickFindTimeout;
+    if (data.isOpenAndFocused) {
+      this.inPassThrough = false;
+    }
+  }
+
+  handleEvent(event) {
+    switch (event.type) {
+      case "keypress":
+        this.onKeypress(event);
+        break;
+      case "mouseup":
+        this.onMouseup(event);
+        break;
+    }
+  }
+
+  onKeypress(event) {
+    if (this.inPassThrough) {
+      this.passKeyToParent(event);
+    } else if (
+      this.findMode != FIND_NORMAL &&
+      this.inQuickFind &&
+      event.charCode
+    ) {
+      this.passKeyToParent(event);
+    }
+  }
+
+  passKeyToParent(event) {
+    event.preventDefault();
+    // These are the properties required to dispatch another 'real' event
+    // to the findbar in the parent in _dispatchKeypressEvent in findbar.xml .
+    // If you make changes here, verify that that method can still do its job.
+    const kRequiredProps = [
+      "type",
+      "bubbles",
+      "cancelable",
+      "ctrlKey",
+      "altKey",
+      "shiftKey",
+      "metaKey",
+      "keyCode",
+      "charCode",
+    ];
+    let fakeEvent = {};
+    for (let prop of kRequiredProps) {
+      fakeEvent[prop] = event[prop];
+    }
+    this.actor.sendAsyncMessage("Findbar:Keypress", fakeEvent);
+  }
+
+  onMouseup(event) {
+    if (this.findMode != FIND_NORMAL) {
+      this.actor.sendAsyncMessage("Findbar:Mouseup", {});
+    }
+  }
+}
+
+XPCOMUtils.defineLazyPreferenceGetter(
+  FindBarContent,
+  "typeAheadLinksOnly",
+  "accessibility.typeaheadfind.linksonly"
+);