[WIP] ash/extensions: Add experimental extension support for window-management in ash.

chrome/browser/extensions/api/wm/wm_utils.cc

Index: chrome/browser/extensions/api/wm/wm_utils.cc
diff --git a/chrome/browser/extensions/api/wm/wm_utils.cc b/chrome/browser/extensions/api/wm/wm_utils.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1e2bb0b7c05e6eb928b5b13ae188c1b951a2d3c6
--- /dev/null
+++ b/chrome/browser/extensions/api/wm/wm_utils.cc
@@ -0,0 +1,145 @@
+// Copyright (c) 2012 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 "chrome/browser/extensions/api/wm/wm_utils.h"
+
+#include "ash/wm/window_util.h"
+#include "base/utf_string_conversions.h"
+#include "chrome/common/extensions/api/experimental_wm.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/base/ui_base_types.h"
+
+namespace {
+
+const char kWindowStateFullscreen[] = "fullscreen";
+const char kWindowStateMaximized[] = "maximized";
+const char kWindowStateMinimized[] = "minimized";
+const char kWindowStateNormal[] = "normal";
+
+const char kWindowTypeModal[] = "modal";
+const char kWindowTypeNormal[] = "normal";
+const char kWindowTypePanel[] = "panel";
+
+std::list<const aura::Window*>::iterator FindPosition(
+    std::list<const aura::Window*>& list,
+    const aura::Window* item) {
+  for (std::list<const aura::Window*>::iterator iter = list.begin();
+      iter != list.end();
+      ++iter) {
+    if (*iter == item)
+      return iter;
+  }
+  return list.end();
+}
+
+}
+
+namespace extensions {
+namespace api {
+namespace wm {
+
+WindowIdTracker::WindowIdTracker()
+    : next_window_id_(0) {
+}
+
+WindowIdTracker::~WindowIdTracker() {}
+
+// static
+WindowIdTracker* WindowIdTracker::GetInstance() {
+  return Singleton<WindowIdTracker>::get();
+}
+
+int WindowIdTracker::WindowExtensionId(const aura::Window* window) {
+  return lookup_[window];
+}
+
+const aura::Window* WindowIdTracker::ExtensionIdWindow(int extension_id) {
+  return reverse_lookup_[extension_id];
+}
+
+int WindowIdTracker::TrackWindow(const aura::Window* window) {
+  lookup_[window] = ++next_window_id_;
+  reverse_lookup_[next_window_id_] = window;
+  creation_order_.push_front(window);
+  return next_window_id_;
+}
+
+void WindowIdTracker::UntrackWindow(const aura::Window* window) {
+  int window_extension_id = lookup_[window];
+  lookup_.erase(window);
+  reverse_lookup_.erase(window_extension_id);
+
+  std::list<const aura::Window*>::iterator pos = FindPosition(activation_order_,
+                                                              window);
+  if (pos != activation_order_.end())
+    activation_order_.erase(pos);
+
+  pos = FindPosition(creation_order_, window);
+  if (pos != creation_order_.end())
+    creation_order_.erase(pos);
+}
+
+void WindowIdTracker::ActivateWindow(const aura::Window* window) {
+  std::list<const aura::Window*>::iterator pos = FindPosition(activation_order_,
+                                                              window);
+  if (pos != activation_order_.end())
+    activation_order_.erase(pos);
+  activation_order_.push_front(window);
+}
+
+std::vector<const aura::Window*> WindowIdTracker::AllWindows(bool activation) {
+  std::vector<const aura::Window*> windows;
+  std::list<const aura::Window*>::iterator iter, begin, end;
+  begin = activation ? activation_order_.begin() : creation_order_.begin();
+  end = activation ? activation_order_.end() : creation_order_.end();
+  for (iter = begin; iter != end; ++iter)
+    windows.push_back(*iter);
+
+  return windows;
+}
+
+namespace utils {
+
+void AuraWindowToExtensionWindow(const aura::Window* window,
+                                 experimental_wm::AshWindow* extension_window) {
+  if (!window) {
+    extension_window->id = -1;
+    return;
+  }
+
+  extension_window->id =
+      WindowIdTracker::GetInstance()->WindowExtensionId(window);
+  extension_window->title = UTF16ToUTF8(window->title());
+  extension_window->name = window->name();
+
+  if (window->GetProperty(aura::client::kModalKey) == ui::MODAL_TYPE_WINDOW)
+    extension_window->type = kWindowTypeModal;
+  else if (window->type() == aura::client::WINDOW_TYPE_PANEL)
+    extension_window->type = kWindowTypePanel;
+  else
+    extension_window->type = kWindowTypeNormal;
+
+  if (ash::wm::IsWindowMaximized(window))
+    extension_window->state = kWindowStateMaximized;
+  else if (ash::wm::IsWindowMinimized(window))
+    extension_window->state = kWindowStateMinimized;
+  else if (ash::wm::IsWindowFullscreen(window))
+    extension_window->state = kWindowStateFullscreen;
+  else
+    extension_window->state = kWindowStateNormal;
+
+  gfx::Rect bounds = window->bounds();
+  extension_window->bounds.x = bounds.x();
+  extension_window->bounds.y = bounds.y();
+  extension_window->bounds.width = bounds.width();
+  extension_window->bounds.height = bounds.height();
+
+  extension_window->active = ash::wm::IsActiveWindow(
+      const_cast<aura::Window*>(window));
+}
+
+}  // namespace utils
+}  // namespace wm
+}  // namespace api
+}  // namespace extensions