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Unified Diff: third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.h

Issue 2805763004: [System-Keyboard-Lock] Forward navigator functions to RenderFrameHost (Closed)
Patch Set: Sync latest changes Created 3 years, 8 months ago
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Index: third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.h
diff --git a/third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.h b/third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.h
new file mode 100644
index 0000000000000000000000000000000000000000..aaec2d6a7fa2b679194618d10b20dc48de0ab44b
--- /dev/null
+++ b/third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.h
@@ -0,0 +1,73 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NavigatorKeyboardLock_h
+#define NavigatorKeyboardLock_h
+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "core/frame/Navigator.h"
+#include "platform/Supplementable.h"
+#include "platform/heap/Handle.h"
+#include "platform/heap/Member.h"
+#include "platform/wtf/Forward.h"
+#include "public/platform/modules/keyboard_lock/keyboard_lock.mojom-blink.h"
+
+namespace blink {
+
+class ScriptPromiseResolver;
+
+// The supplement of Navigator to process navigator.requestKeyLock() and
+// navigator.cancelKeyLock() web APIs. This class forwards both requests
+// directly to the browser process through mojo.
+class NavigatorKeyboardLock final
+ : public GarbageCollectedFinalized<NavigatorKeyboardLock>,
+ public Supplement<Navigator> {
+ USING_GARBAGE_COLLECTED_MIXIN(NavigatorKeyboardLock);
+
+ public:
+ // Requests to receive a set of key codes
+ // (https://w3c.github.io/uievents/#dom-keyboardevent-code) in string format.
+ // The Promise will be rejected if the user or browser do not allow the web
+ // page to use this API. Otherwise, web page should expect to receive the key
+ // presses once the Promise has been resolved. This API does best effort to
+ // deliver the key codes: due to the platform restrictions, some keys or key
+ // combinations may not be able to receive or intercept by the user agent.
+ // - Making two requests concurrently without waiting for one Promise to
+ // finish is disallowed, the second Promise will be rejected immediately.
+ // - Making a second request after the Promise of the first one has finished
+ // is allowed; the second request will overwrite the key codes reserved.
+ // - Passing in an empty keyCodes array will reserve all keys.
+ static ScriptPromise requestKeyLock(ScriptState*,
+ Navigator&,
+ const Vector<String>&);
+
+ // Removes all reserved keys. This function is also asynchronized, the web
+ // page may still receive reserved keys after this function has finished. Once
+ // the web page is closed, the user agent implicitly executes this API.
+ static void cancelKeyLock(Navigator&);
+
+ DECLARE_TRACE();
+
+ private:
+ explicit NavigatorKeyboardLock(Navigator&);
+ static const char* SupplementName();
+
+ static NavigatorKeyboardLock& From(Navigator&);
+
+ ScriptPromise requestKeyLock(ScriptState*, const Vector<String>&);
+ void cancelKeyLock();
+
+ // Ensures the |service_| is correctly initialized. In case of the |service_|
+ // cannot be initialized, this function returns false.
+ bool EnsureServiceConnected();
+
+ void LockRequestFinished(bool, const String&);
+
+ mojom::blink::KeyboardLockServicePtr service_;
+ Member<ScriptPromiseResolver> request_keylock_resolver_;
+};
+
+} // namespace blink
+
+#endif // NavigatorKeyboardLock_h

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