Move all sources under atom/.
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319
atom/browser/ui/file_dialog_win.cc
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319
atom/browser/ui/file_dialog_win.cc
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// Copyright (c) 2013 GitHub, Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "atom/browser/ui/file_dialog.h"
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#include <atlbase.h>
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#include <windows.h>
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#include <commdlg.h>
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#include <shlobj.h>
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#include "base/file_util.h"
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#include "base/i18n/case_conversion.h"
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#include "base/strings/string_util.h"
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#include "base/strings/string_split.h"
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#include "base/strings/utf_string_conversions.h"
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#include "base/win/registry.h"
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#include "atom/browser/native_window.h"
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#include "third_party/wtl/include/atlapp.h"
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#include "third_party/wtl/include/atldlgs.h"
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namespace file_dialog {
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namespace {
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// Distinguish directories from regular files.
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bool IsDirectory(const base::FilePath& path) {
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base::PlatformFileInfo file_info;
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return file_util::GetFileInfo(path, &file_info) ?
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file_info.is_directory : path.EndsWithSeparator();
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}
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// Get the file type description from the registry. This will be "Text Document"
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// for .txt files, "JPEG Image" for .jpg files, etc. If the registry doesn't
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// have an entry for the file type, we return false, true if the description was
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// found. 'file_ext' must be in form ".txt".
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static bool GetRegistryDescriptionFromExtension(const std::wstring& file_ext,
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std::wstring* reg_description) {
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DCHECK(reg_description);
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base::win::RegKey reg_ext(HKEY_CLASSES_ROOT, file_ext.c_str(), KEY_READ);
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std::wstring reg_app;
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if (reg_ext.ReadValue(NULL, ®_app) == ERROR_SUCCESS && !reg_app.empty()) {
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base::win::RegKey reg_link(HKEY_CLASSES_ROOT, reg_app.c_str(), KEY_READ);
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if (reg_link.ReadValue(NULL, reg_description) == ERROR_SUCCESS)
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return true;
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}
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return false;
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}
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// Set up a filter for a Save/Open dialog, which will consist of |file_ext| file
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// extensions (internally separated by semicolons), |ext_desc| as the text
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// descriptions of the |file_ext| types (optional), and (optionally) the default
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// 'All Files' view. The purpose of the filter is to show only files of a
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// particular type in a Windows Save/Open dialog box. The resulting filter is
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// returned. The filters created here are:
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// 1. only files that have 'file_ext' as their extension
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// 2. all files (only added if 'include_all_files' is true)
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// Example:
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// file_ext: { "*.txt", "*.htm;*.html" }
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// ext_desc: { "Text Document" }
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// returned: "Text Document\0*.txt\0HTML Document\0*.htm;*.html\0"
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// "All Files\0*.*\0\0" (in one big string)
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// If a description is not provided for a file extension, it will be retrieved
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// from the registry. If the file extension does not exist in the registry, it
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// will be omitted from the filter, as it is likely a bogus extension.
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void FormatFilterForExtensions(
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std::vector<std::wstring>* file_ext,
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std::vector<std::wstring>* ext_desc,
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bool include_all_files,
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std::vector<COMDLG_FILTERSPEC>* file_types) {
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DCHECK(file_ext->size() >= ext_desc->size());
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if (file_ext->empty())
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include_all_files = true;
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for (size_t i = 0; i < file_ext->size(); ++i) {
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std::wstring ext = (*file_ext)[i];
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std::wstring desc;
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if (i < ext_desc->size())
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desc = (*ext_desc)[i];
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if (ext.empty()) {
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// Force something reasonable to appear in the dialog box if there is no
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// extension provided.
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include_all_files = true;
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continue;
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}
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if (desc.empty()) {
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DCHECK(ext.find(L'.') != std::wstring::npos);
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std::wstring first_extension = ext.substr(ext.find(L'.'));
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size_t first_separator_index = first_extension.find(L';');
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if (first_separator_index != std::wstring::npos)
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first_extension = first_extension.substr(0, first_separator_index);
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// Find the extension name without the preceeding '.' character.
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std::wstring ext_name = first_extension;
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size_t ext_index = ext_name.find_first_not_of(L'.');
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if (ext_index != std::wstring::npos)
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ext_name = ext_name.substr(ext_index);
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if (!GetRegistryDescriptionFromExtension(first_extension, &desc)) {
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// The extension doesn't exist in the registry. Create a description
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// based on the unknown extension type (i.e. if the extension is .qqq,
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// the we create a description "QQQ File (.qqq)").
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include_all_files = true;
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// TODO(zcbenz): should be localized.
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desc = base::i18n::ToUpper(WideToUTF16(ext_name)) + L" File";
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}
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desc += L" (*." + ext_name + L")";
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// Store the description.
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ext_desc->push_back(desc);
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}
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COMDLG_FILTERSPEC spec = { (*ext_desc)[i].c_str(), (*file_ext)[i].c_str() };
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file_types->push_back(spec);
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}
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if (include_all_files) {
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// TODO(zcbenz): Should be localized.
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ext_desc->push_back(L"All Files (*.*)");
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file_ext->push_back(L"*.*");
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COMDLG_FILTERSPEC spec = {
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(*ext_desc)[ext_desc->size() - 1].c_str(),
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(*file_ext)[file_ext->size() - 1].c_str(),
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};
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file_types->push_back(spec);
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}
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}
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// Generic class to delegate common open/save dialog's behaviours, users need to
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// call interface methods via GetPtr().
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template <typename T>
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class FileDialog {
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public:
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FileDialog(const base::FilePath& default_path,
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const std::string title,
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int options,
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const std::vector<std::wstring>& file_ext,
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const std::vector<std::wstring>& desc_ext)
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: file_ext_(file_ext),
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desc_ext_(desc_ext) {
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std::vector<COMDLG_FILTERSPEC> filters;
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FormatFilterForExtensions(&file_ext_, &desc_ext_, true, &filters);
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std::wstring file_part;
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if (!IsDirectory(default_path))
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file_part = default_path.BaseName().value();
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dialog_.reset(new T(
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file_part.c_str(),
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options,
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NULL,
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filters.data(),
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filters.size()));
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if (!title.empty())
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GetPtr()->SetTitle(UTF8ToUTF16(title).c_str());
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SetDefaultFolder(default_path);
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}
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bool Show(atom::NativeWindow* parent_window) {
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atom::NativeWindow::DialogScope dialog_scope(parent_window);
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HWND window = parent_window ? parent_window->GetNativeWindow() : NULL;
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return dialog_->DoModal(window) == IDOK;
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}
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T* GetDialog() { return dialog_.get(); }
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IFileDialog* GetPtr() const { return dialog_->GetPtr(); }
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const std::vector<std::wstring> file_ext() const { return file_ext_; }
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private:
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// Set up the initial directory for the dialog.
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void SetDefaultFolder(const base::FilePath file_path) {
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std::wstring directory = IsDirectory(file_path) ?
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file_path.value() :
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file_path.DirName().value();
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ATL::CComPtr<IShellItem> folder_item;
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HRESULT hr = SHCreateItemFromParsingName(directory.c_str(),
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NULL,
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IID_PPV_ARGS(&folder_item));
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if (SUCCEEDED(hr))
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GetPtr()->SetDefaultFolder(folder_item);
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}
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scoped_ptr<T> dialog_;
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std::vector<std::wstring> file_ext_;
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std::vector<std::wstring> desc_ext_;
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std::vector<COMDLG_FILTERSPEC> filters_;
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DISALLOW_COPY_AND_ASSIGN(FileDialog);
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};
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} // namespace
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bool ShowOpenDialog(atom::NativeWindow* parent_window,
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const std::string& title,
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const base::FilePath& default_path,
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int properties,
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std::vector<base::FilePath>* paths) {
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int options = FOS_FORCEFILESYSTEM | FOS_FILEMUSTEXIST;
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if (properties & FILE_DIALOG_OPEN_DIRECTORY)
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options |= FOS_PICKFOLDERS;
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if (properties & FILE_DIALOG_MULTI_SELECTIONS)
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options |= FOS_ALLOWMULTISELECT;
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FileDialog<CShellFileOpenDialog> open_dialog(
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default_path,
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title,
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options,
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std::vector<std::wstring>(),
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std::vector<std::wstring>());
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if (!open_dialog.Show(parent_window))
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return false;
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ATL::CComPtr<IShellItemArray> items;
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HRESULT hr = static_cast<IFileOpenDialog*>(open_dialog.GetPtr())->GetResults(
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&items);
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if (FAILED(hr))
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return false;
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ATL::CComPtr<IShellItem> item;
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DWORD count = 0;
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hr = items->GetCount(&count);
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if (FAILED(hr))
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return false;
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paths->reserve(count);
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for (DWORD i = 0; i < count; ++i) {
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hr = items->GetItemAt(i, &item);
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if (FAILED(hr))
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return false;
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wchar_t file_name[MAX_PATH];
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hr = CShellFileOpenDialog::GetFileNameFromShellItem(
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item, SIGDN_FILESYSPATH, file_name, MAX_PATH);
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if (FAILED(hr))
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return false;
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paths->push_back(base::FilePath(file_name));
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}
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return true;
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}
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void ShowOpenDialog(atom::NativeWindow* parent_window,
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const std::string& title,
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const base::FilePath& default_path,
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int properties,
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const OpenDialogCallback& callback) {
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std::vector<base::FilePath> paths;
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bool result = ShowOpenDialog(parent_window,
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title,
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default_path,
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properties,
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&paths);
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callback.Run(result, paths);
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}
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bool ShowSaveDialog(atom::NativeWindow* parent_window,
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const std::string& title,
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const base::FilePath& default_path,
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base::FilePath* path) {
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// TODO(zcbenz): Accept custom filters from caller.
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std::vector<std::wstring> file_ext;
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std::wstring extension = default_path.Extension();
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if (!extension.empty())
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file_ext.push_back(extension.insert(0, L"*"));
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FileDialog<CShellFileSaveDialog> save_dialog(
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default_path,
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title,
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FOS_FORCEFILESYSTEM | FOS_PATHMUSTEXIST | FOS_OVERWRITEPROMPT,
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file_ext,
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std::vector<std::wstring>());
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if (!save_dialog.Show(parent_window))
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return false;
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wchar_t file_name[MAX_PATH];
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HRESULT hr = save_dialog.GetDialog()->GetFilePath(file_name, MAX_PATH);
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if (FAILED(hr))
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return false;
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// Append extension according to selected filter.
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UINT filter_index = 1;
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save_dialog.GetPtr()->GetFileTypeIndex(&filter_index);
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std::wstring selected_filter = save_dialog.file_ext()[filter_index - 1];
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if (selected_filter != L"*.*") {
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std::wstring result = file_name;
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if (!EndsWith(result, selected_filter.substr(1), false)) {
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if (result[result.length() - 1] != L'.')
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result.push_back(L'.');
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result.append(selected_filter.substr(2));
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*path = base::FilePath(result);
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return true;
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}
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}
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*path = base::FilePath(file_name);
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return true;
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}
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void ShowSaveDialog(atom::NativeWindow* parent_window,
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const std::string& title,
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const base::FilePath& default_path,
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const SaveDialogCallback& callback) {
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base::FilePath path;
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bool result = ShowSaveDialog(parent_window, title, default_path, &path);
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callback.Run(result, path);
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}
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} // namespace file_dialog
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