add a new set of commands to resize and position windows

chrome/browser/devtools/chrome_devtools_manager_delegate.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 "chrome/browser/devtools/chrome_devtools_manager_delegate.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "chrome/browser/devtools/device/android_device_manager.h"
 #include "chrome/browser/devtools/device/tcp_device_provider.h"
 #include "chrome/browser/devtools/devtools_network_protocol_handler.h"
 #include "chrome/browser/devtools/devtools_protocol_constants.h"
 #include "chrome/browser/devtools/devtools_window.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_navigator_params.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_iterator.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/grit/browser_resources.h"
 #include "components/guest_view/browser/guest_view_base.h"
 #include "content/public/browser/devtools_agent_host.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_host.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/process_manager.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using content::DevToolsAgentHost;
 
 char ChromeDevToolsManagerDelegate::kTypeApp[] = "app";
 char ChromeDevToolsManagerDelegate::kTypeBackgroundPage[] = "background_page";
 char ChromeDevToolsManagerDelegate::kTypeWebView[] = "webview";
 
 char kLocationsParam[] = "locations";
 char kHostParam[] = "host";
 char kPortParam[] = "port";
 
+BrowserWindow* GetBrowserWindow(int window_id) {

[dgozman, 2017/03/22 21:28:34]

Place all these functions into a single anonymous namespace (or mark them all as
static) to avoid naming conflicts in future.

namespace {

...

} // namespace

[jzfeng, 2017/03/23 06:58:25]

Done.

+  for (auto* b : *BrowserList::GetInstance()) {
+    if (b->session_id().id() == window_id)
+      return b->window();
+  }
+  return nullptr;
+}
+
+base::DictionaryValue* GetWindowBounds(BrowserWindow* window) {
+  base::DictionaryValue* bounds_object = new base::DictionaryValue();
+  gfx::Rect bounds;
+  if (window->IsMinimized())
+    bounds = window->GetRestoredBounds();
+  else
+    bounds = window->GetBounds();
+  std::unique_ptr<base::DictionaryValue> result(
+      base::MakeUnique<base::DictionaryValue>());
+  bounds_object->SetInteger("left", bounds.x());
+  bounds_object->SetInteger("top", bounds.y());
+  bounds_object->SetInteger("width", bounds.width());
+  bounds_object->SetInteger("height", bounds.height());
+
+  std::string window_state = "normal";
+  if (window->IsMinimized())
+    window_state = "minimized";
+  if (window->IsMaximized())
+    window_state = "maximized";
+  if (window->IsFullscreen())
+    window_state = "fullscreen";
+  bounds_object->SetString("windowState", window_state);
+  return bounds_object;
+}
+
+std::unique_ptr<base::DictionaryValue>
+GetWindowForTarget(int id, std::string method, base::DictionaryValue* params) {
+  std::string target_id;
+  if (!params->GetString("targetId", &target_id))
+    return DevToolsProtocol::CreateInvalidParamsResponse(id, "targetId");
+
+  Browser* browser = nullptr;
+  scoped_refptr<DevToolsAgentHost> host =
+      DevToolsAgentHost::GetForId(target_id);
+  if (!host)
+    return DevToolsProtocol::CreateErrorResponse(id, "No target with given id");
+  content::WebContents* web_contents = host->GetWebContents();
+  if (!web_contents)
+    return DevToolsProtocol::CreateErrorResponse(

[dgozman, 2017/03/22 21:28:34]

style: when |if| body takes more than one line, wrap it in braces.

[jzfeng, 2017/03/23 06:58:25]

Thanks for the tip! Done.

+        id, "No web contents in the target");
+  for (auto* b : *BrowserList::GetInstance()) {
+    int tab_index = b->tab_strip_model()->GetIndexOfWebContents(web_contents);
+    if (tab_index != TabStripModel::kNoTab)
+      browser = b;
+  }
+  if (!browser)
+    return DevToolsProtocol::CreateErrorResponse(id,
+                                                 "Browser window not found");
+
+  std::unique_ptr<base::DictionaryValue> result(

[dgozman, 2017/03/22 21:28:34]

You don't have to use MakeUnique when you have a variable of specific type:

std::unique_ptr<base::DictionaryValue> result(new base::DictionaryValue())

MakeUnique is useful for example with auto or for temporaries:
auto result = MakeUnique<...>();
foo(MakeUnique<...>());

[jzfeng, 2017/03/23 06:58:25]

The explanation is very helpful! Done.

+      base::MakeUnique<base::DictionaryValue>());
+  result->SetInteger("windowId", browser->session_id().id());
+  result->Set("bounds", GetWindowBounds(browser->window()));
+  return DevToolsProtocol::CreateSuccessResponse(id, std::move(result));
+}
+
+std::unique_ptr<base::DictionaryValue>
+GetWindowBounds(int id, std::string method, base::DictionaryValue* params) {
+  int window_id;
+  if (!params->GetInteger("windowId", &window_id))
+    return DevToolsProtocol::CreateInvalidParamsResponse(id, "windowId");
+  BrowserWindow* window = GetBrowserWindow(window_id);
+  if (!window)
+    return DevToolsProtocol::CreateErrorResponse(id,
+                                                 "Browser window not found");
+  std::unique_ptr<base::DictionaryValue> result(
+      base::MakeUnique<base::DictionaryValue>());
+  result->Set("bounds", GetWindowBounds(window));
+  return DevToolsProtocol::CreateSuccessResponse(id, std::move(result));
+}
+
+std::unique_ptr<base::DictionaryValue>
+SetWindowBounds(int id, std::string method, base::DictionaryValue* params) {
+  int window_id;
+  if (!params->GetInteger("windowId", &window_id))
+    return DevToolsProtocol::CreateInvalidParamsResponse(id, "windowId");
+  BrowserWindow* window = GetBrowserWindow(window_id);
+  if (!window)
+    return DevToolsProtocol::CreateErrorResponse(id,
+                                                 "Browser window not found");
+
+  base::Value* value = nullptr;
+  base::DictionaryValue* bounds_dict = nullptr;
+  if (!params->Get("bounds", &value) || !value->GetAsDictionary(&bounds_dict))
+    return DevToolsProtocol::CreateInvalidParamsResponse(id, "bounds");
+
+  std::string window_state;
+  if (!bounds_dict->GetString("windowState", &window_state))
+    window_state = "normal";
+  else if (window_state != "normal" && window_state != "minimized" &&
+           window_state != "maximized" && window_state != "fullscreen")
+    return DevToolsProtocol::CreateInvalidParamsResponse(id, "windowState");
+
+  if (window_state != "fullscreen" && window->IsFullscreen())
+    window->GetExclusiveAccessContext()->ExitFullscreen();
+
+  if (window_state == "minimized") {
+    window->Minimize();
+  } else if (window_state == "maximized") {
+    window->Maximize();
+  } else if (window_state == "fullscreen") {
+    if (window->IsMinimized() || window->IsMaximized())
+      window->Restore();
+    window->GetExclusiveAccessContext()->EnterFullscreen(
+        GURL(), EXCLUSIVE_ACCESS_BUBBLE_TYPE_NONE);
+  } else {
+    window->Restore();

[dgozman, 2017/03/22 21:28:34]

Is it ok to call Restore when not maximized nor minimized?

[jzfeng, 2017/03/23 06:58:25]

Changed to restore only when the window is maximized. I don't find restore
useful when the window is minimized on linux. Maybe it is not true for other
platform.

+  }
+
+  bool set_bounds = false;
+  gfx::Rect bounds;
+  if (window->IsMinimized())

[dgozman, 2017/03/22 21:28:34]

|| window->IsMaximized()  ?

[jzfeng, 2017/03/23 06:58:25]

Done.

+    bounds = window->GetRestoredBounds();
+  else
+    bounds = window->GetBounds();
+
+  int left, top, width, height;
+  if (bounds_dict->GetInteger("left", &left)) {
+    bounds.set_x(left);
+    set_bounds = true;
+  }
+  if (bounds_dict->GetInteger("top", &top)) {
+    bounds.set_y(top);
+    set_bounds = true;
+  }
+  if (bounds_dict->GetInteger("width", &width)) {
+    if (width < 0)
+      return DevToolsProtocol::CreateInvalidParamsResponse(id, "width");
+    bounds.set_width(width);
+    set_bounds = true;
+  }
+  if (bounds_dict->GetInteger("height", &height)) {
+    if (height < 0)
+      return DevToolsProtocol::CreateInvalidParamsResponse(id, "height");
+    bounds.set_height(height);
+    set_bounds = true;
+  }
+
+  if (set_bounds && window_state != "normal")
+    return DevToolsProtocol::CreateErrorResponse(
+        id,
+        "The 'minimized', 'maximized' and 'fullscreen' states cannot be "
+        "combined with 'left', 'top', 'width' or 'height'");
+
+  if (set_bounds)
+    window->SetBounds(bounds);
+
+  return DevToolsProtocol::CreateSuccessResponse(id, nullptr);
+}
+
+std::unique_ptr<base::DictionaryValue> HandleBrowserCommand(
+    int id,
+    std::string method,
+    base::DictionaryValue* params) {
+  if (method == chrome::devtools::Browser::getWindowForTarget::kName)
+    return GetWindowForTarget(id, method, params);
+  if (method == chrome::devtools::Browser::getWindowBounds::kName)
+    return GetWindowBounds(id, method, params);
+  if (method == chrome::devtools::Browser::setWindowBounds::kName)
+    return SetWindowBounds(id, method, params);
+  return nullptr;
+}
+
 class ChromeDevToolsManagerDelegate::HostData {
  public:
   HostData() {}
   ~HostData() {}
 
   RemoteLocations& remote_locations() { return remote_locations_; }
 
   void set_remote_locations(RemoteLocations& locations) {
     remote_locations_.swap(locations);
   }
@@ skipping 19 matching lines @@
 base::DictionaryValue* ChromeDevToolsManagerDelegate::HandleCommand(
     DevToolsAgentHost* agent_host,
     base::DictionaryValue* command_dict) {
 
   int id = 0;
   std::string method;
   base::DictionaryValue* params = nullptr;
   if (!DevToolsProtocol::ParseCommand(command_dict, &id, &method, &params))
     return nullptr;
 
+  if (method.find("Browser.") == 0)
+    return HandleBrowserCommand(id, method, params).release();

[dgozman, 2017/03/22 21:28:34]

Let's only do this if |agent_host->GetType() ==
DevToolsAgentHost::kTypeBrowser|.

[jzfeng, 2017/03/23 06:58:24]

Done.

+
   if (method == chrome::devtools::Target::setRemoteLocations::kName)
     return SetRemoteLocations(agent_host, id, params).release();
 
   return network_protocol_handler_->HandleCommand(agent_host, command_dict);
 }
 
 std::string ChromeDevToolsManagerDelegate::GetTargetType(
     content::RenderFrameHost* host) {
   content::WebContents* web_contents =
       content::WebContents::FromRenderFrameHost(host);
@@ skipping 183 matching lines @@
     tcp_locations.insert(net::HostPortPair(host, port));
   }
 
   host_data_[agent_host]->set_remote_locations(tcp_locations);
   UpdateDeviceDiscovery();
 
   std::unique_ptr<base::DictionaryValue> result(
       base::MakeUnique<base::DictionaryValue>());
   return DevToolsProtocol::CreateSuccessResponse(command_id, std::move(result));
 }