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file_dialog_gtk.cc
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file_dialog_gtk.cc
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// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/ui/file_dialog.h"
#include "base/callback.h"
#include "base/files/file_util.h"
#include "base/strings/string_util.h"
#include "chrome/browser/ui/libgtkui/gtk_util.h"
#include "shell/browser/native_window_views.h"
#include "shell/browser/unresponsive_suppressor.h"
#include "ui/base/glib/glib_signal.h"
#include "ui/views/widget/desktop_aura/x11_desktop_handler.h"
namespace file_dialog {
DialogSettings::DialogSettings() = default;
DialogSettings::DialogSettings(const DialogSettings&) = default;
DialogSettings::~DialogSettings() = default;
namespace {
// Copied from L40-L55 in
// https://cs.chromium.org/chromium/src/chrome/browser/ui/libgtkui/select_file_dialog_impl_gtk.cc
#if GTK_CHECK_VERSION(3, 90, 0)
// GTK stock items have been deprecated. The docs say to switch to using the
// strings "_Open", etc. However this breaks i18n. We could supply our own
// internationalized strings, but the "_" in these strings is significant: it's
// the keyboard shortcut to select these actions. TODO(thomasanderson): Provide
// internationalized strings when GTK provides support for it.
const char kOkLabel[] = "_Ok";
const char kCancelLabel[] = "_Cancel";
const char kOpenLabel[] = "_Open";
const char kSaveLabel[] = "_Save";
#else
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
const char* const kOkLabel = GTK_STOCK_OK;
const char* const kCancelLabel = GTK_STOCK_CANCEL;
const char* const kOpenLabel = GTK_STOCK_OPEN;
const char* const kSaveLabel = GTK_STOCK_SAVE;
G_GNUC_END_IGNORE_DEPRECATIONS
#endif
static const int kPreviewWidth = 256;
static const int kPreviewHeight = 512;
// Makes sure that .jpg also shows .JPG.
gboolean FileFilterCaseInsensitive(const GtkFileFilterInfo* file_info,
std::string* file_extension) {
// Makes .* file extension matches all file types.
if (*file_extension == ".*")
return true;
return base::EndsWith(file_info->filename, *file_extension,
base::CompareCase::INSENSITIVE_ASCII);
}
// Deletes |data| when gtk_file_filter_add_custom() is done with it.
void OnFileFilterDataDestroyed(std::string* file_extension) {
delete file_extension;
}
class FileChooserDialog {
public:
FileChooserDialog(GtkFileChooserAction action, const DialogSettings& settings)
: parent_(
static_cast<electron::NativeWindowViews*>(settings.parent_window)),
filters_(settings.filters) {
const char* confirm_text = kOkLabel;
if (!settings.button_label.empty())
confirm_text = settings.button_label.c_str();
else if (action == GTK_FILE_CHOOSER_ACTION_SAVE)
confirm_text = kOpenLabel;
else if (action == GTK_FILE_CHOOSER_ACTION_OPEN)
confirm_text = kSaveLabel;
dialog_ = gtk_file_chooser_dialog_new(
settings.title.c_str(), NULL, action, kCancelLabel, GTK_RESPONSE_CANCEL,
confirm_text, GTK_RESPONSE_ACCEPT, NULL);
if (parent_) {
parent_->SetEnabled(false);
libgtkui::SetGtkTransientForAura(dialog_, parent_->GetNativeWindow());
gtk_window_set_modal(GTK_WINDOW(dialog_), TRUE);
}
if (action == GTK_FILE_CHOOSER_ACTION_SAVE)
gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dialog_),
TRUE);
if (action != GTK_FILE_CHOOSER_ACTION_OPEN)
gtk_file_chooser_set_create_folders(GTK_FILE_CHOOSER(dialog_), TRUE);
if (!settings.default_path.empty()) {
if (base::DirectoryExists(settings.default_path)) {
gtk_file_chooser_set_current_folder(
GTK_FILE_CHOOSER(dialog_), settings.default_path.value().c_str());
} else {
if (settings.default_path.IsAbsolute()) {
gtk_file_chooser_set_current_folder(
GTK_FILE_CHOOSER(dialog_),
settings.default_path.DirName().value().c_str());
}
gtk_file_chooser_set_current_name(
GTK_FILE_CHOOSER(dialog_),
settings.default_path.BaseName().value().c_str());
}
}
if (!settings.filters.empty())
AddFilters(settings.filters);
preview_ = gtk_image_new();
g_signal_connect(dialog_, "update-preview",
G_CALLBACK(OnUpdatePreviewThunk), this);
gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(dialog_), preview_);
}
~FileChooserDialog() {
gtk_widget_destroy(dialog_);
if (parent_)
parent_->SetEnabled(true);
}
void SetupOpenProperties(int properties) {
const auto hasProp = [properties](OpenFileDialogProperty prop) {
return gboolean((properties & prop) != 0);
};
auto* file_chooser = GTK_FILE_CHOOSER(dialog());
gtk_file_chooser_set_select_multiple(file_chooser,
hasProp(OPEN_DIALOG_MULTI_SELECTIONS));
gtk_file_chooser_set_show_hidden(file_chooser,
hasProp(OPEN_DIALOG_SHOW_HIDDEN_FILES));
}
void SetupSaveProperties(int properties) {
const auto hasProp = [properties](SaveFileDialogProperty prop) {
return gboolean((properties & prop) != 0);
};
auto* file_chooser = GTK_FILE_CHOOSER(dialog());
gtk_file_chooser_set_show_hidden(file_chooser,
hasProp(SAVE_DIALOG_SHOW_HIDDEN_FILES));
gtk_file_chooser_set_do_overwrite_confirmation(
file_chooser, hasProp(SAVE_DIALOG_SHOW_OVERWRITE_CONFIRMATION));
}
void RunAsynchronous() {
g_signal_connect(dialog_, "delete-event",
G_CALLBACK(gtk_widget_hide_on_delete), NULL);
g_signal_connect(dialog_, "response", G_CALLBACK(OnFileDialogResponseThunk),
this);
gtk_widget_show_all(dialog_);
// We need to call gtk_window_present after making the widgets visible to
// make sure window gets correctly raised and gets focus.
int time = ui::X11EventSource::GetInstance()->GetTimestamp();
gtk_window_present_with_time(GTK_WINDOW(dialog_), time);
}
void RunSaveAsynchronous(electron::util::Promise promise) {
save_promise_.reset(new electron::util::Promise(std::move(promise)));
RunAsynchronous();
}
void RunOpenAsynchronous(electron::util::Promise promise) {
open_promise_.reset(new electron::util::Promise(std::move(promise)));
RunAsynchronous();
}
base::FilePath GetFileName() const {
gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dialog_));
const base::FilePath path(filename);
g_free(filename);
return path;
}
std::vector<base::FilePath> GetFileNames() const {
std::vector<base::FilePath> paths;
auto* filenames = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(dialog_));
for (auto* iter = filenames; iter != NULL; iter = iter->next) {
auto* filename = static_cast<char*>(iter->data);
paths.emplace_back(filename);
g_free(filename);
}
g_slist_free(filenames);
return paths;
}
CHROMEG_CALLBACK_1(FileChooserDialog,
void,
OnFileDialogResponse,
GtkWidget*,
int);
GtkWidget* dialog() const { return dialog_; }
private:
void AddFilters(const Filters& filters);
electron::NativeWindowViews* parent_;
electron::UnresponsiveSuppressor unresponsive_suppressor_;
GtkWidget* dialog_;
GtkWidget* preview_;
Filters filters_;
std::unique_ptr<electron::util::Promise> save_promise_;
std::unique_ptr<electron::util::Promise> open_promise_;
// Callback for when we update the preview for the selection.
CHROMEG_CALLBACK_0(FileChooserDialog, void, OnUpdatePreview, GtkWidget*);
DISALLOW_COPY_AND_ASSIGN(FileChooserDialog);
};
void FileChooserDialog::OnFileDialogResponse(GtkWidget* widget, int response) {
gtk_widget_hide(dialog_);
if (save_promise_) {
mate::Dictionary dict =
mate::Dictionary::CreateEmpty(save_promise_->isolate());
if (response == GTK_RESPONSE_ACCEPT) {
dict.Set("canceled", false);
dict.Set("filePath", GetFileName());
} else {
dict.Set("canceled", true);
dict.Set("filePath", base::FilePath());
}
save_promise_->Resolve(dict.GetHandle());
} else if (open_promise_) {
mate::Dictionary dict =
mate::Dictionary::CreateEmpty(open_promise_->isolate());
if (response == GTK_RESPONSE_ACCEPT) {
dict.Set("canceled", false);
dict.Set("filePaths", GetFileNames());
} else {
dict.Set("canceled", true);
dict.Set("filePaths", std::vector<base::FilePath>());
}
open_promise_->Resolve(dict.GetHandle());
}
delete this;
}
void FileChooserDialog::AddFilters(const Filters& filters) {
for (size_t i = 0; i < filters.size(); ++i) {
const Filter& filter = filters[i];
GtkFileFilter* gtk_filter = gtk_file_filter_new();
for (size_t j = 0; j < filter.second.size(); ++j) {
auto file_extension =
std::make_unique<std::string>("." + filter.second[j]);
gtk_file_filter_add_custom(
gtk_filter, GTK_FILE_FILTER_FILENAME,
reinterpret_cast<GtkFileFilterFunc>(FileFilterCaseInsensitive),
file_extension.release(),
reinterpret_cast<GDestroyNotify>(OnFileFilterDataDestroyed));
}
gtk_file_filter_set_name(gtk_filter, filter.first.c_str());
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dialog_), gtk_filter);
}
}
void FileChooserDialog::OnUpdatePreview(GtkWidget* chooser) {
gchar* filename =
gtk_file_chooser_get_preview_filename(GTK_FILE_CHOOSER(chooser));
if (!filename) {
gtk_file_chooser_set_preview_widget_active(GTK_FILE_CHOOSER(chooser),
FALSE);
return;
}
// Don't attempt to open anything which isn't a regular file. If a named pipe,
// this may hang. See https://crbug.com/534754.
struct stat stat_buf;
if (stat(filename, &stat_buf) != 0 || !S_ISREG(stat_buf.st_mode)) {
g_free(filename);
gtk_file_chooser_set_preview_widget_active(GTK_FILE_CHOOSER(chooser),
FALSE);
return;
}
// This will preserve the image's aspect ratio.
GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file_at_size(filename, kPreviewWidth,
kPreviewHeight, nullptr);
g_free(filename);
if (pixbuf) {
gtk_image_set_from_pixbuf(GTK_IMAGE(preview_), pixbuf);
g_object_unref(pixbuf);
}
gtk_file_chooser_set_preview_widget_active(GTK_FILE_CHOOSER(chooser),
pixbuf ? TRUE : FALSE);
}
} // namespace
bool ShowOpenDialogSync(const DialogSettings& settings,
std::vector<base::FilePath>* paths) {
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
if (settings.properties & OPEN_DIALOG_OPEN_DIRECTORY)
action = GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER;
FileChooserDialog open_dialog(action, settings);
open_dialog.SetupOpenProperties(settings.properties);
gtk_widget_show_all(open_dialog.dialog());
int response = gtk_dialog_run(GTK_DIALOG(open_dialog.dialog()));
if (response == GTK_RESPONSE_ACCEPT) {
*paths = open_dialog.GetFileNames();
return true;
}
return false;
}
void ShowOpenDialog(const DialogSettings& settings,
electron::util::Promise promise) {
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
if (settings.properties & OPEN_DIALOG_OPEN_DIRECTORY)
action = GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER;
FileChooserDialog* open_dialog = new FileChooserDialog(action, settings);
open_dialog->SetupOpenProperties(settings.properties);
open_dialog->RunOpenAsynchronous(std::move(promise));
}
bool ShowSaveDialogSync(const DialogSettings& settings, base::FilePath* path) {
FileChooserDialog save_dialog(GTK_FILE_CHOOSER_ACTION_SAVE, settings);
save_dialog.SetupSaveProperties(settings.properties);
gtk_widget_show_all(save_dialog.dialog());
int response = gtk_dialog_run(GTK_DIALOG(save_dialog.dialog()));
if (response == GTK_RESPONSE_ACCEPT) {
*path = save_dialog.GetFileName();
return true;
}
return false;
}
void ShowSaveDialog(const DialogSettings& settings,
electron::util::Promise promise) {
FileChooserDialog* save_dialog =
new FileChooserDialog(GTK_FILE_CHOOSER_ACTION_SAVE, settings);
save_dialog->RunSaveAsynchronous(std::move(promise));
}
} // namespace file_dialog