Move file_dialog and message_box to browser/ui.
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8 changed files with 18 additions and 18 deletions
344
browser/ui/file_dialog_win.cc
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344
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 "browser/ui/file_dialog.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/string_util.h"
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#include "base/strings/string_split.h"
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#include "base/utf_string_conversions.h"
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#include "base/win/registry.h"
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#include "base/win/windows_version.h"
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#include "browser/native_window.h"
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namespace file_dialog {
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namespace {
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// Given |extension|, if it's not empty, then remove the leading dot.
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std::wstring GetExtensionWithoutLeadingDot(const std::wstring& extension) {
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DCHECK(extension.empty() || extension[0] == L'.');
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return extension.empty() ? extension : extension.substr(1);
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}
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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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std::wstring FormatFilterForExtensions(
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const std::vector<std::wstring>& file_ext,
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const std::vector<std::wstring>& ext_desc,
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bool include_all_files) {
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const std::wstring all_ext = L"*.*";
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// TODO(zcbenz): Should be localized.
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const std::wstring all_desc = L"All Files";
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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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std::wstring result;
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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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+ ext_name
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+ L")";
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}
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if (desc.empty())
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desc = L"*." + ext_name;
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}
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result.append(desc.c_str(), desc.size() + 1); // Append NULL too.
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result.append(ext.c_str(), ext.size() + 1);
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}
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if (include_all_files) {
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result.append(all_desc.c_str(), all_desc.size() + 1);
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result.append(all_ext.c_str(), all_ext.size() + 1);
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}
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result.append(1, '\0'); // Double NULL required.
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return result;
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}
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// This function takes the output of a SaveAs dialog: a filename, a filter and
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// the extension originally suggested to the user (shown in the dialog box) and
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// returns back the filename with the appropriate extension tacked on. If the
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// user requests an unknown extension and is not using the 'All files' filter,
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// the suggested extension will be appended, otherwise we will leave the
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// filename unmodified. |filename| should contain the filename selected in the
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// SaveAs dialog box and may include the path, |filter_selected| should be
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// '*.something', for example '*.*' or it can be blank (which is treated as
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// *.*). |suggested_ext| should contain the extension without the dot (.) in
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// front, for example 'jpg'.
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std::wstring AppendExtensionIfNeeded(
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const std::wstring& filename,
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const std::wstring& filter_selected,
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const std::wstring& suggested_ext) {
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DCHECK(!filename.empty());
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std::wstring return_value = filename;
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// If we wanted a specific extension, but the user's filename deleted it or
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// changed it to something that the system doesn't understand, re-append.
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// Careful: Checking net::GetMimeTypeFromExtension() will only find
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// extensions with a known MIME type, which many "known" extensions on Windows
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// don't have. So we check directly for the "known extension" registry key.
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std::wstring file_extension(
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GetExtensionWithoutLeadingDot(base::FilePath(filename).Extension()));
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std::wstring key(L"." + file_extension);
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if (!(filter_selected.empty() || filter_selected == L"*.*") &&
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!base::win::RegKey(HKEY_CLASSES_ROOT, key.c_str(), KEY_READ).Valid() &&
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file_extension != suggested_ext) {
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if (return_value[return_value.length() - 1] != L'.')
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return_value.append(L".");
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return_value.append(suggested_ext);
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}
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// Strip any trailing dots, which Windows doesn't allow.
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size_t index = return_value.find_last_not_of(L'.');
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if (index < return_value.size() - 1)
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return_value.resize(index + 1);
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return return_value;
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}
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// Enforce visible dialog box.
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UINT_PTR CALLBACK SaveAsDialogHook(HWND dialog, UINT message,
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WPARAM wparam, LPARAM lparam) {
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static const UINT kPrivateMessage = 0x2F3F;
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switch (message) {
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case WM_INITDIALOG: {
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// Do nothing here. Just post a message to defer actual processing.
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PostMessage(dialog, kPrivateMessage, 0, 0);
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return TRUE;
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}
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case kPrivateMessage: {
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// The dialog box is the parent of the current handle.
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HWND real_dialog = GetParent(dialog);
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// Retrieve the final size.
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RECT dialog_rect;
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GetWindowRect(real_dialog, &dialog_rect);
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// Verify that the upper left corner is visible.
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POINT point = { dialog_rect.left, dialog_rect.top };
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HMONITOR monitor1 = MonitorFromPoint(point, MONITOR_DEFAULTTONULL);
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point.x = dialog_rect.right;
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point.y = dialog_rect.bottom;
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// Verify that the lower right corner is visible.
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HMONITOR monitor2 = MonitorFromPoint(point, MONITOR_DEFAULTTONULL);
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if (monitor1 && monitor2)
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return 0;
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// Some part of the dialog box is not visible, fix it by moving is to the
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// client rect position of the browser window.
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HWND parent_window = GetParent(real_dialog);
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if (!parent_window)
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return 0;
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WINDOWINFO parent_info;
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parent_info.cbSize = sizeof(WINDOWINFO);
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GetWindowInfo(parent_window, &parent_info);
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SetWindowPos(real_dialog, NULL,
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parent_info.rcClient.left,
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parent_info.rcClient.top,
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0, 0, // Size.
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SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSIZE |
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SWP_NOZORDER);
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return 0;
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}
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}
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return 0;
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}
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} // namespace
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bool ShowOpenDialog(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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return false;
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}
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bool ShowSaveDialog(atom::NativeWindow* 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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std::wstring file_ext = default_path.Extension().insert(0, L"*");
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std::wstring filter = FormatFilterForExtensions(
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std::vector<std::wstring>(1, file_ext),
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std::vector<std::wstring>(),
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true);
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std::wstring file_part = default_path.BaseName().value();
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// If the default_path is a root directory, file_part will be '\', and the
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// call to GetSaveFileName below will fail.
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if (file_part.size() == 1 && file_part[0] == L'\\')
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file_part.clear();
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// The size of the in/out buffer in number of characters we pass to win32
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// GetSaveFileName. From MSDN "The buffer must be large enough to store the
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// path and file name string or strings, including the terminating NULL
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// character. ... The buffer should be at least 256 characters long.".
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// _IsValidPathComDlg does a copy expecting at most MAX_PATH, otherwise will
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// result in an error of FNERR_INVALIDFILENAME. So we should only pass the
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// API a buffer of at most MAX_PATH.
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wchar_t file_name[MAX_PATH];
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base::wcslcpy(file_name, file_part.c_str(), arraysize(file_name));
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OPENFILENAME save_as;
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// We must do this otherwise the ofn's FlagsEx may be initialized to random
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// junk in release builds which can cause the Places Bar not to show up!
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ZeroMemory(&save_as, sizeof(save_as));
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save_as.lStructSize = sizeof(OPENFILENAME);
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save_as.hwndOwner = window->GetNativeWindow();
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save_as.hInstance = NULL;
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save_as.lpstrFilter = filter.empty() ? NULL : filter.c_str();
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save_as.lpstrCustomFilter = NULL;
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save_as.nMaxCustFilter = 0;
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save_as.nFilterIndex = 1;
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save_as.lpstrFile = file_name;
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save_as.nMaxFile = arraysize(file_name);
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save_as.lpstrFileTitle = NULL;
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save_as.nMaxFileTitle = 0;
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// Set up the initial directory for the dialog.
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std::wstring directory;
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if (IsDirectory(default_path)) {
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directory = default_path.value();
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file_part.clear();
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} else {
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directory = default_path.DirName().value();
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}
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save_as.lpstrInitialDir = directory.c_str();
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save_as.lpstrTitle = NULL;
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save_as.Flags = OFN_OVERWRITEPROMPT | OFN_EXPLORER | OFN_ENABLESIZING |
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OFN_NOCHANGEDIR | OFN_PATHMUSTEXIST;
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save_as.lpstrDefExt = NULL; // default extension, ignored for now.
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save_as.lCustData = NULL;
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if (base::win::GetVersion() < base::win::VERSION_VISTA) {
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// The save as on Windows XP remembers its last position,
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// and if the screen resolution changed, it will be off screen.
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save_as.Flags |= OFN_ENABLEHOOK;
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save_as.lpfnHook = &SaveAsDialogHook;
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}
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// Must be NULL or 0.
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save_as.pvReserved = NULL;
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save_as.dwReserved = 0;
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if (!GetSaveFileName(&save_as)) {
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// Zero means the dialog was closed, otherwise we had an error.
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DWORD error_code = CommDlgExtendedError();
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if (error_code != 0) {
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NOTREACHED() << "GetSaveFileName failed with code: " << error_code;
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}
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return false;
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}
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// Return the user's choice.
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*path = base::FilePath();
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// Figure out what filter got selected from the vector with embedded nulls.
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// NOTE: The filter contains a string with embedded nulls, such as:
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// JPG Image\0*.jpg\0All files\0*.*\0\0
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// The filter index is 1-based index for which pair got selected. So, using
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// the example above, if the first index was selected we need to skip 1
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// instance of null to get to "*.jpg".
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std::vector<std::wstring> filters;
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if (!filter.empty() && save_as.nFilterIndex > 0)
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base::SplitString(filter, '\0', &filters);
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std::wstring filter_selected;
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if (!filters.empty())
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filter_selected = filters[(2 * (save_as.nFilterIndex - 1)) + 1];
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// Get the extension that was suggested to the user (when the Save As dialog
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// was opened).
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std::wstring suggested_ext =
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GetExtensionWithoutLeadingDot(default_path.Extension());
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*path = base::FilePath(AppendExtensionIfNeeded(
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save_as.lpstrFile, filter_selected, suggested_ext));
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return true;
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}
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} // namespace file_dialog
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