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

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

Index: chrome/browser/extensions/api/wm/wm_api.cc
diff --git a/chrome/browser/extensions/api/wm/wm_api.cc b/chrome/browser/extensions/api/wm/wm_api.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ebc774ba9e205e4606d9fcf17e83a760dc172c64
--- /dev/null
+++ b/chrome/browser/extensions/api/wm/wm_api.cc
@@ -0,0 +1,312 @@
+// 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_api.h"
+
+#include <vector>
+
+#include "ash/wm/window_util.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/extensions/api/wm/wm_utils.h"
+#include "chrome/common/extensions/api/experimental_wm.h"
+#include "content/public/browser/browser_thread.h"
+#include "ui/aura/client/aura_constants.h"
+#include "ui/aura/window.h"
+#include "ui/base/ui_base_types.h"
+#include "ui/compositor/layer.h"
+#include "ui/compositor/scoped_layer_animation_settings.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/point3.h"
+#include "ui/gfx/screen.h"
+
+namespace {
+
+const char kWindowOrderActivity[] = "activity";
+
+}
+
+namespace extensions {
+namespace api {
+
+////////////////////////////////////////////////////////////////////////////////
+// WindowFunction
+
+WindowFunction::WindowFunction() : window_id_(0) {
+}
+
+WindowFunction::~WindowFunction() {}
+
+bool WindowFunction::Prepare() {
+  if (!args_.get() || args_->empty() ||
+      !args_->GetInteger(0, &window_id_))
+    return false;
+  EXTENSION_FUNCTION_VALIDATE(window_id_);
+  set_work_thread_id(content::BrowserThread::UI);
+  return true;
+}
+
+void WindowFunction::Work() {
+  const aura::Window* window = wm::WindowIdTracker::GetInstance()->
+      ExtensionIdWindow(window_id_);
+  if (!window) {
+    SetResult(base::Value::CreateNullValue());
+    return;
+  }
+
+  bool result = WorkOnWindow(const_cast<aura::Window*>(window));
+  SetResult(base::Value::CreateBooleanValue(result));
+}
+
+bool WindowFunction::Respond() {
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmCloseFunction
+
+WmCloseFunction::WmCloseFunction() {}
+
+WmCloseFunction::~WmCloseFunction() {}
+
+bool WmCloseFunction::WorkOnWindow(aura::Window* window) {
+  delete window;
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmMinimizeFunction
+
+WmMinimizeFunction::WmMinimizeFunction() {}
+
+WmMinimizeFunction::~WmMinimizeFunction() {}
+
+bool WmMinimizeFunction::WorkOnWindow(aura::Window* window) {
+  ash::wm::MinimizeWindow(window);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmMaximizeFunction
+
+WmMaximizeFunction::WmMaximizeFunction() {}
+
+WmMaximizeFunction::~WmMaximizeFunction() {}
+
+bool WmMaximizeFunction::WorkOnWindow(aura::Window* window) {
+  ash::wm::MaximizeWindow(window);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmFullscreenFunction
+
+WmFullscreenFunction::WmFullscreenFunction() {}
+
+WmFullscreenFunction::~WmFullscreenFunction() {}
+
+bool WmFullscreenFunction::WorkOnWindow(aura::Window* window) {
+  window->SetProperty(aura::client::kShowStateKey, ui::SHOW_STATE_FULLSCREEN);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmRestoreFunction
+
+WmRestoreFunction::WmRestoreFunction() {}
+
+WmRestoreFunction::~WmRestoreFunction() {}
+
+bool WmRestoreFunction::WorkOnWindow(aura::Window* window) {
+  if (ash::wm::IsWindowFullscreen(window) || ash::wm::IsWindowMaximized(window))
+    ash::wm::RestoreWindow(window);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WindowLayerFunction
+
+WindowLayerFunction::WindowLayerFunction(int num_arguments)
+    : duration_(0),
+      num_arguments_(num_arguments) {
+}
+
+WindowLayerFunction::~WindowLayerFunction() {}
+
+bool WindowLayerFunction::Prepare() {
+  if (!WindowFunction::Prepare())
+    return false;
+  if (!args_->GetInteger(num_arguments_ + 1, &duration_))
+    duration_ = 0;
+  return true;
+}
+
+bool WindowLayerFunction::WorkOnWindow(aura::Window* window) {
+  ui::Layer* layer = window->layer();
+  if (duration_ > 0) {
+    ui::ScopedLayerAnimationSettings settings(layer->GetAnimator());
+    settings.SetTransitionDuration(
+        base::TimeDelta::FromMilliseconds(duration_));
+    WorkOnLayer(layer);
+  } else {
+    WorkOnLayer(layer);
+  }
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmOpacityFunction
+
+WmOpacityFunction::WmOpacityFunction()
+    : WindowLayerFunction(1),
+      opacity_(1.) {
+}
+
+WmOpacityFunction::~WmOpacityFunction() {}
+
+bool WmOpacityFunction::Prepare() {
+  if (!WindowLayerFunction::Prepare())
+    return false;
+
+  if (!args_->GetDouble(1, &opacity_))
+    return false;
+  EXTENSION_FUNCTION_VALIDATE(opacity_);
+  return true;
+}
+
+void WmOpacityFunction::WorkOnLayer(ui::Layer* layer) {
+  layer->SetOpacity(static_cast<float>(opacity_));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmTransformFunction
+
+WmTransformFunction::WmTransformFunction()
+    : WindowLayerFunction(1) {
+}
+
+WmTransformFunction::~WmTransformFunction() {}
+
+bool WmTransformFunction::Prepare() {
+  if (!WindowLayerFunction::Prepare())
+    return false;
+
+  base::DictionaryValue* dict = NULL;
+  if (!args_->GetDictionary(1, &dict) || !dict)
+    return false;
+  dictionary_.reset(dict->DeepCopyWithoutEmptyChildren());
+  return true;
+}
+
+void WmTransformFunction::WorkOnLayer(ui::Layer* layer) {
+  ui::Transform transform;
+
+  double rotate = 0;
+  if (dictionary_->GetDouble("rotate", &rotate)) {
+    gfx::Point3f axis(1, 0, 0);
+    transform.ConcatRotateAbout(axis, rotate);
+  }
+
+  double perspective = 0;
+  if (dictionary_->GetDouble("perspective", &perspective))
+    transform.SetPerspectiveDepth(perspective);
+
+  double scale;
+  if (dictionary_->GetDouble("scale", &scale))
+    transform.ConcatScale(scale, scale);
+
+  double translate_x = 0, translate_y = 0;
+  if (!dictionary_->GetDouble("translateX", &translate_x))
+    translate_x = 0;
+  if (!dictionary_->GetDouble("translateY", &translate_y))
+    translate_y = 0;
+  if (translate_x != 0 || translate_y != 0)
+    transform.ConcatTranslate(translate_x, translate_y);
+
+  layer->SetTransform(transform);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmSetWindowBoundsFunction
+
+void WmSetWindowBoundsFunction::WorkOnLayer(ui::Layer* layer) {
+  int x, y, width, height;
+  gfx::Rect bounds = layer->GetTargetBounds();
+
+  if (dictionary_->GetInteger("x", &x))
+    bounds.set_x(x);
+  if (dictionary_->GetInteger("y", &y))
+    bounds.set_y(y);
+  if (dictionary_->GetInteger("width", &width))
+    bounds.set_width(width);
+  if (dictionary_->GetInteger("height", &height))
+    bounds.set_height(height);
+
+  // TODO(sad): Note that if the window is maximized/fullscreen, this has really
+  // nasty side-effects. Handle these cases gracefully.
+  layer->SetBounds(bounds);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmWindowsFunction
+
+bool WmWindowsFunction::RunImpl() {
+  std::string list_order;
+  std::vector<const aura::Window*> windows;
+  if (args_->GetString(0, &list_order) && list_order == kWindowOrderActivity) {
+    windows = wm::WindowIdTracker::GetInstance()->AllWindows(true);
+  } else {
+    windows = wm::WindowIdTracker::GetInstance()->AllWindows(false);
+  }
+
+  ListValue* windowlist = new ListValue;
+  for (std::vector<const aura::Window*>::iterator iter = windows.begin();
+       iter != windows.end();
+       ++iter) {
+    experimental_wm::AshWindow extension_window;
+    wm::utils::AuraWindowToExtensionWindow(*iter, &extension_window);
+    windowlist->Append(
+        extension_window.ToValue()->DeepCopyWithoutEmptyChildren());
+  }
+  SetResult(windowlist);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmScreenBoundsFunction
+
+bool WmScreenBoundsFunction::RunImpl() {
+  base::DictionaryValue* dict = new base::DictionaryValue;
+  gfx::Rect bounds = gfx::Screen::GetPrimaryDisplay().bounds();
+  dict->SetInteger("x", bounds.x());
+  dict->SetInteger("y", bounds.y());
+  dict->SetInteger("width", bounds.width());
+  dict->SetInteger("height", bounds.height());
+  SetResult(dict);
+  return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// WmStackWindowAboveFunction
+
+bool WmStackWindowAboveFunction::RunImpl() {
+  int above_window_id, below_window_id;
+  if (!args_->GetInteger(0, &above_window_id) ||
+      !args_->GetInteger(1, &below_window_id))
+    return false;
+
+  aura::Window* above_window = const_cast<aura::Window*>(
+      wm::WindowIdTracker::GetInstance()->ExtensionIdWindow(above_window_id));
+  aura::Window* below_window = const_cast<aura::Window*>(
+      wm::WindowIdTracker::GetInstance()->ExtensionIdWindow(below_window_id));
+
+  if (!above_window || !below_window ||
+      above_window->parent() != below_window->parent())
+    return false;
+
+  above_window->parent()->StackChildAbove(above_window, below_window);
+  return true;
+}
+
+}  // namespace api
+}  // namespace extensions