Athena's FocusManager

athena/screen/screen_accelerator_handler.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 "athena/screen/screen_accelerator_handler.h"
+
+#include "athena/input/public/accelerator_manager.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_event_dispatcher.h"
+#include "ui/aura/window_tree_host.h"
+#include "ui/compositor/debug_utils.h"
+#include "ui/wm/public/activation_client.h"
+
+namespace athena {
+namespace {
+
+enum Command {
+  CMD_PRINT_LAYER_HIERARCHY,
+  CMD_PRINT_WINDOW_HIERARCHY,
+};
+
+const int EF_ALL_DOWN =
+    ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN | ui::EF_ALT_DOWN;
+
+const AcceleratorData accelerator_data[] = {
+    {TRIGGER_ON_PRESS, ui::VKEY_L, EF_ALL_DOWN, CMD_PRINT_LAYER_HIERARCHY,
+     AF_DEBUG},
+    {TRIGGER_ON_PRESS, ui::VKEY_W, EF_ALL_DOWN, CMD_PRINT_WINDOW_HIERARCHY,
+     AF_DEBUG},
+};
+
+void PrintLayerHierarchy(aura::Window* root_window) {
+  ui::PrintLayerHierarchy(
+      root_window->layer(),
+      root_window->GetHost()->dispatcher()->GetLastMouseLocationInRoot());
+}
+
+void PrintWindowHierarchy(aura::Window* window,
+                          aura::Window* active,
+                          int indent,
+                          std::ostringstream* out) {
+  std::string indent_str(indent, ' ');
+  std::string name(window->name());
+  if (name.empty())
+    name = "\"\"";
+  *out << indent_str << name << " (" << window << ")"
+       << " type=" << window->type()
+       << ((window == active) ? " [active] " : " ")
+       << (window->IsVisible() ? " visible " : " ")
+       << window->bounds().ToString() << '\n';
+
+  for (size_t i = 0; i < window->children().size(); ++i)
+    PrintWindowHierarchy(window->children()[i], active, indent + 3, out);
+}
+
+void HandlePrintWindowHierarchy(aura::Window* root_window) {
+  aura::Window* active =
+      aura::client::GetActivationClient(root_window)->GetActiveWindow();
+  std::ostringstream out;
+  out << "RootWindow :\n";
+  PrintWindowHierarchy(root_window, active, 0, &out);
+  // Error so logs can be collected from end-users.
+  LOG(ERROR) << out.str();
+}
+
+}  // namespace
+
+// static
+ScreenAcceleratorHandler::ScreenAcceleratorHandler(aura::Window* root_window)
+    : root_window_(root_window) {
+  AcceleratorManager::Get()->RegisterAccelerators(
+      accelerator_data, arraysize(accelerator_data), this);
+}
+
+ScreenAcceleratorHandler::~ScreenAcceleratorHandler() {
+}
+
+bool ScreenAcceleratorHandler::IsCommandEnabled(int command_id) const {
+  return true;
+}
+
+bool ScreenAcceleratorHandler::OnAcceleratorFired(
+    int command_id,
+    const ui::Accelerator& accelerator) {
+  switch (command_id) {
+    case CMD_PRINT_LAYER_HIERARCHY:
+      PrintLayerHierarchy(root_window_);
+      return true;
+    case CMD_PRINT_WINDOW_HIERARCHY:
+      HandlePrintWindowHierarchy(root_window_);
+      return true;
+  }
+  return false;
+}
+
+}  // namesapce athena