Revert "ozone: evdev: Handle mouse events"

ui/events/ozone/evdev/key_event_converter_evdev.cc

+// Copyright 2014 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.
+
+#include "ui/events/ozone/evdev/key_event_converter_evdev.h"
+
+#include <errno.h>
+#include <linux/input.h>
+
+#include "base/message_loop/message_loop.h"
+#include "ui/events/event.h"
+#include "ui/events/keycodes/dom4/keycode_converter.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+#include "ui/events/ozone/evdev/event_modifiers_evdev.h"
+
+namespace ui {
+
+namespace {
+
+}  // namespace
+
+KeyEventConverterEvdev::KeyEventConverterEvdev(int fd,
+                                               base::FilePath path,
+                                               int id,
+                                               KeyboardEvdev* keyboard)
+    : EventConverterEvdev(fd, path, id), keyboard_(keyboard) {
+}
+
+KeyEventConverterEvdev::~KeyEventConverterEvdev() {
+  Stop();
+  close(fd_);
+}
+
+void KeyEventConverterEvdev::OnFileCanReadWithoutBlocking(int fd) {
+  input_event inputs[4];
+  ssize_t read_size = read(fd, inputs, sizeof(inputs));
+  if (read_size < 0) {
+    if (errno == EINTR || errno == EAGAIN)
+      return;
+    if (errno != ENODEV)
+      PLOG(ERROR) << "error reading device " << path_.value();
+    Stop();
+    return;
+  }
+
+  DCHECK_EQ(read_size % sizeof(*inputs), 0u);
+  ProcessEvents(inputs, read_size / sizeof(*inputs));
+}
+
+void KeyEventConverterEvdev::ProcessEvents(const input_event* inputs,
+                                           int count) {
+  for (int i = 0; i < count; ++i) {
+    const input_event& input = inputs[i];
+    if (input.type == EV_KEY) {
+      keyboard_->OnKeyChange(input.code, input.value != 0);
+    } else if (input.type == EV_SYN) {
+      // TODO(sadrul): Handle this case appropriately.
+    }
+  }
+}
+
+}  // namespace ui