Implement input type=color UI

chrome/browser/ui/views/select_file_dialog_win.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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/ui/select_file_dialog.h"
 
 #include <windows.h>
 #include <commdlg.h>
 #include <shlobj.h>
 
 #include <algorithm>
 #include <set>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/i18n/case_conversion.h"
 #include "base/message_loop.h"
 #include "base/string_split.h"
 #include "base/threading/thread.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/registry.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/windows_version.h"
+#include "chrome/browser/ui/views/base_shell_dialog_win.h"
 #include "content/public/browser/browser_thread.h"
 #include "grit/generated_resources.h"
 #include "grit/ui_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::BrowserThread;
 
 // This function takes the output of a SaveAs dialog: a filename, a filter and
 // the extension originally suggested to the user (shown in the dialog box) and
 // returns back the filename with the appropriate extension tacked on. If the
@@ skipping 335 matching lines @@
                               suggested_name,
                               filter,
                               L"",
                               false,
                               &index,
                               final_name);
 }
 
 }  // namespace
 
-// Helpers to show certain types of Windows shell dialogs in a way that doesn't
-// block the UI of the entire app.
-
-class ShellDialogThread : public base::Thread {
- public:
-  ShellDialogThread() : base::Thread("Chrome_ShellDialogThread") { }
-  ~ShellDialogThread() {
-    Stop();
-  }
-
- protected:
-  void Init() {
-    // Initializes the COM library on the current thread.
-    CoInitialize(NULL);
-  }
-
-  void CleanUp() {
-    // Closes the COM library on the current thread. CoInitialize must
-    // be balanced by a corresponding call to CoUninitialize.
-    CoUninitialize();
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ShellDialogThread);
-};
-
-///////////////////////////////////////////////////////////////////////////////
-// A base class for all shell dialog implementations that handles showing a
-// shell dialog modally on its own thread.
-class BaseShellDialogImpl {
- public:
-  BaseShellDialogImpl();
-  virtual ~BaseShellDialogImpl();
-
- protected:
-  // Represents a run of a dialog.
-  struct RunState {
-    // Owning HWND, may be null.
-    HWND owner;
-
-    // Thread dialog is run on.
-    base::Thread* dialog_thread;
-  };
-
-  // Called at the beginning of a modal dialog run. Disables the owner window
-  // and tracks it. Returns the message loop of the thread that the dialog will
-  // be run on.
-  RunState BeginRun(HWND owner);
-
-  // Cleans up after a dialog run. If the run_state has a valid HWND this makes
-  // sure that the window is enabled. This is essential because BeginRun
-  // aggressively guards against multiple modal dialogs per HWND. Must be called
-  // on the UI thread after the result of the dialog has been determined.
-  //
-  // In addition this deletes the Thread in RunState.
-  void EndRun(RunState run_state);
-
-  // Returns true if a modal shell dialog is currently active for the specified
-  // owner. Must be called on the UI thread.
-  bool IsRunningDialogForOwner(HWND owner) const;
-
-  // Disables the window |owner|. Can be run from either the ui or the dialog
-  // thread. Can be called on either the UI or the dialog thread. This function
-  // is called on the dialog thread after the modal Windows Common dialog
-  // functions return because Windows automatically re-enables the owning
-  // window when those functions return, but we don't actually want them to be
-  // re-enabled until the response of the dialog propagates back to the UI
-  // thread, so we disable the owner manually after the Common dialog function
-  // returns.
-  void DisableOwner(HWND owner);
-
- private:
-  // Creates a thread to run a shell dialog on. Each dialog requires its own
-  // thread otherwise in some situations where a singleton owns a single
-  // instance of this object we can have a situation where a modal dialog in
-  // one window blocks the appearance of a modal dialog in another.
-  static base::Thread* CreateDialogThread();
-
-  // Enables the window |owner_|. Can only be run from the ui thread.
-  void EnableOwner(HWND owner);
-
-  // A list of windows that currently own active shell dialogs for this
-  // instance. For example, if the DownloadManager owns an instance of this
-  // object and there are two browser windows open both with Save As dialog
-  // boxes active, this list will consist of the two browser windows' HWNDs.
-  // The derived class must call EndRun once the dialog is done showing to
-  // remove the owning HWND from this list.
-  // This object is static since it is maintained for all instances of this
-  // object - i.e. you can't have two file pickers open for the
-  // same owner, even though they might be represented by different instances
-  // of this object.
-  // This set only contains non-null HWNDs. NULL hwnds are not added to this
-  // list.
-  typedef std::set<HWND> Owners;
-  static Owners owners_;
-  static int instance_count_;
-
-  DISALLOW_COPY_AND_ASSIGN(BaseShellDialogImpl);
-};
-
-// static
-BaseShellDialogImpl::Owners BaseShellDialogImpl::owners_;
-int BaseShellDialogImpl::instance_count_ = 0;
-
-BaseShellDialogImpl::BaseShellDialogImpl() {
-  ++instance_count_;
-}
-
-BaseShellDialogImpl::~BaseShellDialogImpl() {
-  // All runs should be complete by the time this is called!
-  if (--instance_count_ == 0)
-    DCHECK(owners_.empty());
-}
-
-BaseShellDialogImpl::RunState BaseShellDialogImpl::BeginRun(HWND owner) {
-  // Cannot run a modal shell dialog if one is already running for this owner.
-  DCHECK(!IsRunningDialogForOwner(owner));
-  // The owner must be a top level window, otherwise we could end up with two
-  // entries in our map for the same top level window.
-  DCHECK(!owner || owner == GetAncestor(owner, GA_ROOT));
-  RunState run_state;
-  run_state.dialog_thread = CreateDialogThread();
-  run_state.owner = owner;
-  if (owner) {
-    owners_.insert(owner);
-    DisableOwner(owner);
-  }
-  return run_state;
-}
-
-void BaseShellDialogImpl::EndRun(RunState run_state) {
-  if (run_state.owner) {
-    DCHECK(IsRunningDialogForOwner(run_state.owner));
-    EnableOwner(run_state.owner);
-    DCHECK(owners_.find(run_state.owner) != owners_.end());
-    owners_.erase(run_state.owner);
-  }
-  DCHECK(run_state.dialog_thread);
-  delete run_state.dialog_thread;
-}
-
-bool BaseShellDialogImpl::IsRunningDialogForOwner(HWND owner) const {
-  return (owner && owners_.find(owner) != owners_.end());
-}
-
-void BaseShellDialogImpl::DisableOwner(HWND owner) {
-  if (IsWindow(owner))
-    EnableWindow(owner, FALSE);
-}
-
-// static
-base::Thread* BaseShellDialogImpl::CreateDialogThread() {
-  base::Thread* thread = new ShellDialogThread;
-  bool started = thread->Start();
-  DCHECK(started);
-  return thread;
-}
-
-void BaseShellDialogImpl::EnableOwner(HWND owner) {
-  if (IsWindow(owner))
-    EnableWindow(owner, TRUE);
-}
-
 // Implementation of SelectFileDialog that shows a Windows common dialog for
 // choosing a file or folder.
 class SelectFileDialogImpl : public SelectFileDialog,
                              public BaseShellDialogImpl {
  public:
   explicit SelectFileDialogImpl(Listener* listener);
 
   // BaseShellDialog implementation:
   virtual bool IsRunning(HWND owning_hwnd) const OVERRIDE;
   virtual void ListenerDestroyed() OVERRIDE;
@@ skipping 403 matching lines @@
       }
     }
   }
   return success;
 }
 
 // static
 SelectFileDialog* SelectFileDialog::Create(Listener* listener) {
   return new SelectFileDialogImpl(listener);
 }