diff options
Diffstat (limited to 'ui/base/win/window_impl.cc')
| -rw-r--r-- | ui/base/win/window_impl.cc | 273 |
1 files changed, 0 insertions, 273 deletions
diff --git a/ui/base/win/window_impl.cc b/ui/base/win/window_impl.cc deleted file mode 100644 index 22ed535..0000000 --- a/ui/base/win/window_impl.cc +++ /dev/null @@ -1,273 +0,0 @@ -// 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 "ui/base/win/window_impl.h" - -#include <list> - -#include "base/debug/alias.h" -#include "base/memory/singleton.h" -#include "base/strings/string_number_conversions.h" -#include "base/synchronization/lock.h" -#include "base/win/wrapped_window_proc.h" -#include "ui/base/win/hwnd_util.h" - -namespace ui { - -static const DWORD kWindowDefaultChildStyle = - WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS; -static const DWORD kWindowDefaultStyle = WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN; -static const DWORD kWindowDefaultExStyle = 0; - -/////////////////////////////////////////////////////////////////////////////// -// WindowImpl class tracking. - -// Several external scripts rely explicitly on this base class name for -// acquiring the window handle and will break if this is modified! -// static -const wchar_t* const WindowImpl::kBaseClassName = L"Chrome_WidgetWin_"; - -// WindowImpl class information used for registering unique windows. -struct ClassInfo { - UINT style; - HICON icon; - - ClassInfo(int style, HICON icon) - : style(style), - icon(icon) {} - - // Compares two ClassInfos. Returns true if all members match. - bool Equals(const ClassInfo& other) const { - return (other.style == style && other.icon == icon); - } -}; - -// WARNING: this class may be used on multiple threads. -class ClassRegistrar { - public: - ~ClassRegistrar(); - - static ClassRegistrar* GetInstance(); - - // Returns the atom identifying the class matching |class_info|, - // creating and registering a new class if the class is not yet known. - ATOM RetrieveClassAtom(const ClassInfo& class_info); - - private: - // Represents a registered window class. - struct RegisteredClass { - RegisteredClass(const ClassInfo& info, ATOM atom); - - // Info used to create the class. - ClassInfo info; - - // The atom identifying the window class. - ATOM atom; - }; - - ClassRegistrar(); - friend struct DefaultSingletonTraits<ClassRegistrar>; - - typedef std::list<RegisteredClass> RegisteredClasses; - RegisteredClasses registered_classes_; - - // Counter of how many classes have been registered so far. - int registered_count_; - - base::Lock lock_; - - DISALLOW_COPY_AND_ASSIGN(ClassRegistrar); -}; - -ClassRegistrar::~ClassRegistrar() {} - -// static -ClassRegistrar* ClassRegistrar::GetInstance() { - return Singleton<ClassRegistrar, - LeakySingletonTraits<ClassRegistrar> >::get(); -} - -ATOM ClassRegistrar::RetrieveClassAtom(const ClassInfo& class_info) { - base::AutoLock auto_lock(lock_); - for (RegisteredClasses::const_iterator i = registered_classes_.begin(); - i != registered_classes_.end(); ++i) { - if (class_info.Equals(i->info)) - return i->atom; - } - - // No class found, need to register one. - string16 name = string16(WindowImpl::kBaseClassName) + - base::IntToString16(registered_count_++); - - WNDCLASSEX window_class; - base::win::InitializeWindowClass( - name.c_str(), - &base::win::WrappedWindowProc<WindowImpl::WndProc>, - class_info.style, - 0, - 0, - NULL, - NULL, - NULL, - class_info.icon, - class_info.icon, - &window_class); - HMODULE instance = window_class.hInstance; - ATOM atom = RegisterClassEx(&window_class); - CHECK(atom) << GetLastError(); - - registered_classes_.push_back(RegisteredClass(class_info, atom)); - - return atom; -} - -ClassRegistrar::RegisteredClass::RegisteredClass(const ClassInfo& info, - ATOM atom) - : info(info), - atom(atom) {} - -ClassRegistrar::ClassRegistrar() : registered_count_(0) {} - - -/////////////////////////////////////////////////////////////////////////////// -// WindowImpl, public - -WindowImpl::WindowImpl() - : window_style_(0), - window_ex_style_(kWindowDefaultExStyle), - class_style_(CS_DBLCLKS), - hwnd_(NULL), - got_create_(false), - got_valid_hwnd_(false), - destroyed_(NULL) { -} - -WindowImpl::~WindowImpl() { - if (destroyed_) - *destroyed_ = true; - ClearUserData(); -} - -void WindowImpl::Init(HWND parent, const gfx::Rect& bounds) { - if (window_style_ == 0) - window_style_ = parent ? kWindowDefaultChildStyle : kWindowDefaultStyle; - - if (parent == HWND_DESKTOP) { - // Only non-child windows can have HWND_DESKTOP (0) as their parent. - CHECK((window_style_ & WS_CHILD) == 0); - parent = GetWindowToParentTo(false); - } else if (parent == ::GetDesktopWindow()) { - // Any type of window can have the "Desktop Window" as their parent. - parent = GetWindowToParentTo(true); - } else if (parent != HWND_MESSAGE) { - CHECK(::IsWindow(parent)); - } - - int x, y, width, height; - if (bounds.IsEmpty()) { - x = y = width = height = CW_USEDEFAULT; - } else { - x = bounds.x(); - y = bounds.y(); - width = bounds.width(); - height = bounds.height(); - } - - ATOM atom = GetWindowClassAtom(); - bool destroyed = false; - destroyed_ = &destroyed; - HWND hwnd = CreateWindowEx(window_ex_style_, - reinterpret_cast<wchar_t*>(atom), NULL, - window_style_, x, y, width, height, - parent, NULL, NULL, this); - - // First nccalcszie (during CreateWindow) for captioned windows is - // deliberately ignored so force a second one here to get the right - // non-client set up. - if (hwnd && (window_style_ & WS_CAPTION)) { - SetWindowPos(hwnd, NULL, 0, 0, 0, 0, - SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE | - SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOREDRAW); - } - - if (!hwnd_ && GetLastError() == 0) { - base::debug::Alias(&destroyed); - base::debug::Alias(&hwnd); - bool got_create = got_create_; - base::debug::Alias(&got_create); - bool got_valid_hwnd = got_valid_hwnd_; - base::debug::Alias(&got_valid_hwnd); - WNDCLASSEX class_info; - memset(&class_info, 0, sizeof(WNDCLASSEX)); - class_info.cbSize = sizeof(WNDCLASSEX); - BOOL got_class = GetClassInfoEx(GetModuleHandle(NULL), - reinterpret_cast<wchar_t*>(atom), - &class_info); - base::debug::Alias(&got_class); - bool procs_match = got_class && class_info.lpfnWndProc == - base::win::WrappedWindowProc<&WindowImpl::WndProc>; - base::debug::Alias(&procs_match); - CHECK(false); - } - if (!destroyed) - destroyed_ = NULL; - - CheckWindowCreated(hwnd_); - - // The window procedure should have set the data for us. - CHECK_EQ(this, ui::GetWindowUserData(hwnd)); -} - -HICON WindowImpl::GetDefaultWindowIcon() const { - return NULL; -} - -LRESULT WindowImpl::OnWndProc(UINT message, WPARAM w_param, LPARAM l_param) { - LRESULT result = 0; - - // Handle the message if it's in our message map; otherwise, let the system - // handle it. - if (!ProcessWindowMessage(hwnd_, message, w_param, l_param, result)) - result = DefWindowProc(hwnd_, message, w_param, l_param); - - return result; -} - -void WindowImpl::ClearUserData() { - if (::IsWindow(hwnd_)) - ui::SetWindowUserData(hwnd_, NULL); -} - -// static -LRESULT CALLBACK WindowImpl::WndProc(HWND hwnd, - UINT message, - WPARAM w_param, - LPARAM l_param) { - if (message == WM_NCCREATE) { - CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(l_param); - WindowImpl* window = reinterpret_cast<WindowImpl*>(cs->lpCreateParams); - DCHECK(window); - ui::SetWindowUserData(hwnd, window); - window->hwnd_ = hwnd; - window->got_create_ = true; - if (hwnd) - window->got_valid_hwnd_ = true; - return TRUE; - } - - WindowImpl* window = reinterpret_cast<WindowImpl*>( - ui::GetWindowUserData(hwnd)); - if (!window) - return 0; - - return window->OnWndProc(message, w_param, l_param); -} - -ATOM WindowImpl::GetWindowClassAtom() { - HICON icon = GetDefaultWindowIcon(); - ClassInfo class_info(initial_class_style(), icon); - return ClassRegistrar::GetInstance()->RetrieveClassAtom(class_info); -} - -} // namespace ui |