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tenfourfox/widget/gtk/nsFilePicker.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/Types.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <gtk/gtk.h>
#include "nsGtkUtils.h"
#include "nsIFileURL.h"
#include "nsIURI.h"
#include "nsIWidget.h"
#include "nsIFile.h"
#include "nsIStringBundle.h"
#include "nsArrayEnumerator.h"
#include "nsMemory.h"
#include "nsEnumeratorUtils.h"
#include "nsNetUtil.h"
#include "nsReadableUtils.h"
#include "mozcontainer.h"
#include "nsFilePicker.h"
using namespace mozilla;
#define MAX_PREVIEW_SIZE 180
// bug 1184009
#define MAX_PREVIEW_SOURCE_SIZE 4096
nsIFile *nsFilePicker::mPrevDisplayDirectory = nullptr;
void
nsFilePicker::Shutdown()
{
NS_IF_RELEASE(mPrevDisplayDirectory);
}
static GtkFileChooserAction
GetGtkFileChooserAction(int16_t aMode)
{
GtkFileChooserAction action;
switch (aMode) {
case nsIFilePicker::modeSave:
action = GTK_FILE_CHOOSER_ACTION_SAVE;
break;
case nsIFilePicker::modeGetFolder:
action = GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER;
break;
case nsIFilePicker::modeOpen:
case nsIFilePicker::modeOpenMultiple:
action = GTK_FILE_CHOOSER_ACTION_OPEN;
break;
default:
NS_WARNING("Unknown nsIFilePicker mode");
action = GTK_FILE_CHOOSER_ACTION_OPEN;
break;
}
return action;
}
static void
UpdateFilePreviewWidget(GtkFileChooser *file_chooser,
gpointer preview_widget_voidptr)
{
GtkImage *preview_widget = GTK_IMAGE(preview_widget_voidptr);
char *image_filename = gtk_file_chooser_get_preview_filename(file_chooser);
struct stat st_buf;
if (!image_filename) {
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
gint preview_width = 0;
gint preview_height = 0;
/* check type of file
* if file is named pipe, Open is blocking which may lead to UI
* nonresponsiveness; if file is directory/socket, it also isn't
* likely to get preview */
if (stat(image_filename, &st_buf) || (!S_ISREG(st_buf.st_mode))) {
g_free(image_filename);
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return; /* stat failed or file is not regular */
}
GdkPixbufFormat *preview_format = gdk_pixbuf_get_file_info(image_filename,
&preview_width,
&preview_height);
if (!preview_format ||
preview_width <= 0 || preview_height <= 0 ||
preview_width > MAX_PREVIEW_SOURCE_SIZE ||
preview_height > MAX_PREVIEW_SOURCE_SIZE) {
g_free(image_filename);
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
GdkPixbuf *preview_pixbuf = nullptr;
// Only scale down images that are too big
if (preview_width > MAX_PREVIEW_SIZE || preview_height > MAX_PREVIEW_SIZE) {
preview_pixbuf = gdk_pixbuf_new_from_file_at_size(image_filename,
MAX_PREVIEW_SIZE,
MAX_PREVIEW_SIZE,
nullptr);
}
else {
preview_pixbuf = gdk_pixbuf_new_from_file(image_filename, nullptr);
}
g_free(image_filename);
if (!preview_pixbuf) {
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
GdkPixbuf *preview_pixbuf_temp = preview_pixbuf;
preview_pixbuf = gdk_pixbuf_apply_embedded_orientation(preview_pixbuf_temp);
g_object_unref(preview_pixbuf_temp);
// This is the easiest way to do center alignment without worrying about containers
// Minimum 3px padding each side (hence the 6) just to make things nice
gint x_padding = (MAX_PREVIEW_SIZE + 6 - gdk_pixbuf_get_width(preview_pixbuf)) / 2;
gtk_misc_set_padding(GTK_MISC(preview_widget), x_padding, 0);
gtk_image_set_from_pixbuf(preview_widget, preview_pixbuf);
g_object_unref(preview_pixbuf);
gtk_file_chooser_set_preview_widget_active(file_chooser, TRUE);
}
static nsAutoCString
MakeCaseInsensitiveShellGlob(const char* aPattern) {
// aPattern is UTF8
nsAutoCString result;
unsigned int len = strlen(aPattern);
for (unsigned int i = 0; i < len; i++) {
if (!g_ascii_isalpha(aPattern[i])) {
// non-ASCII characters will also trigger this path, so unicode
// is safely handled albeit case-sensitively
result.Append(aPattern[i]);
continue;
}
// add the lowercase and uppercase version of a character to a bracket
// match, so it matches either the lowercase or uppercase char.
result.Append('[');
result.Append(g_ascii_tolower(aPattern[i]));
result.Append(g_ascii_toupper(aPattern[i]));
result.Append(']');
}
return result;
}
NS_IMPL_ISUPPORTS(nsFilePicker, nsIFilePicker)
nsFilePicker::nsFilePicker()
: mSelectedType(0)
, mRunning(false)
, mAllowURLs(false)
#if (MOZ_WIDGET_GTK == 3)
, mFileChooserDelegate(nullptr)
#endif
{
}
nsFilePicker::~nsFilePicker()
{
}
void
ReadMultipleFiles(gpointer filename, gpointer array)
{
nsCOMPtr<nsIFile> localfile;
nsresult rv = NS_NewNativeLocalFile(nsDependentCString(static_cast<char*>(filename)),
false,
getter_AddRefs(localfile));
if (NS_SUCCEEDED(rv)) {
nsCOMArray<nsIFile>& files = *static_cast<nsCOMArray<nsIFile>*>(array);
files.AppendObject(localfile);
}
g_free(filename);
}
void
nsFilePicker::ReadValuesFromFileChooser(GtkWidget *file_chooser)
{
mFiles.Clear();
if (mMode == nsIFilePicker::modeOpenMultiple) {
mFileURL.Truncate();
GSList *list = gtk_file_chooser_get_filenames(GTK_FILE_CHOOSER(file_chooser));
g_slist_foreach(list, ReadMultipleFiles, static_cast<gpointer>(&mFiles));
g_slist_free(list);
} else {
gchar *filename = gtk_file_chooser_get_uri(GTK_FILE_CHOOSER(file_chooser));
mFileURL.Assign(filename);
g_free(filename);
}
GtkFileFilter *filter = gtk_file_chooser_get_filter(GTK_FILE_CHOOSER(file_chooser));
GSList *filter_list = gtk_file_chooser_list_filters(GTK_FILE_CHOOSER(file_chooser));
mSelectedType = static_cast<int16_t>(g_slist_index(filter_list, filter));
g_slist_free(filter_list);
// Remember last used directory.
nsCOMPtr<nsIFile> file;
GetFile(getter_AddRefs(file));
if (file) {
nsCOMPtr<nsIFile> dir;
file->GetParent(getter_AddRefs(dir));
if (dir) {
dir.swap(mPrevDisplayDirectory);
}
}
}
void
nsFilePicker::InitNative(nsIWidget *aParent,
const nsAString& aTitle)
{
mParentWidget = aParent;
mTitle.Assign(aTitle);
}
NS_IMETHODIMP
nsFilePicker::AppendFilters(int32_t aFilterMask)
{
mAllowURLs = !!(aFilterMask & filterAllowURLs);
return nsBaseFilePicker::AppendFilters(aFilterMask);
}
NS_IMETHODIMP
nsFilePicker::AppendFilter(const nsAString& aTitle, const nsAString& aFilter)
{
if (aFilter.EqualsLiteral("..apps")) {
// No platform specific thing we can do here, really....
return NS_OK;
}
nsAutoCString filter, name;
CopyUTF16toUTF8(aFilter, filter);
CopyUTF16toUTF8(aTitle, name);
mFilters.AppendElement(filter);
mFilterNames.AppendElement(name);
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::SetDefaultString(const nsAString& aString)
{
mDefault = aString;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::GetDefaultString(nsAString& aString)
{
// Per API...
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsFilePicker::SetDefaultExtension(const nsAString& aExtension)
{
mDefaultExtension = aExtension;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::GetDefaultExtension(nsAString& aExtension)
{
aExtension = mDefaultExtension;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::GetFilterIndex(int32_t *aFilterIndex)
{
*aFilterIndex = mSelectedType;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::SetFilterIndex(int32_t aFilterIndex)
{
mSelectedType = aFilterIndex;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::GetFile(nsIFile **aFile)
{
NS_ENSURE_ARG_POINTER(aFile);
*aFile = nullptr;
nsCOMPtr<nsIURI> uri;
nsresult rv = GetFileURL(getter_AddRefs(uri));
if (!uri)
return rv;
nsCOMPtr<nsIFileURL> fileURL(do_QueryInterface(uri, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file;
rv = fileURL->GetFile(getter_AddRefs(file));
NS_ENSURE_SUCCESS(rv, rv);
file.forget(aFile);
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::GetFileURL(nsIURI **aFileURL)
{
*aFileURL = nullptr;
return NS_NewURI(aFileURL, mFileURL);
}
NS_IMETHODIMP
nsFilePicker::GetFiles(nsISimpleEnumerator **aFiles)
{
NS_ENSURE_ARG_POINTER(aFiles);
if (mMode == nsIFilePicker::modeOpenMultiple) {
return NS_NewArrayEnumerator(aFiles, mFiles);
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsFilePicker::Show(int16_t *aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsresult rv = Open(nullptr);
if (NS_FAILED(rv))
return rv;
while (mRunning) {
g_main_context_iteration(nullptr, TRUE);
}
*aReturn = mResult;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::Open(nsIFilePickerShownCallback *aCallback)
{
// Can't show two dialogs concurrently with the same filepicker
if (mRunning)
return NS_ERROR_NOT_AVAILABLE;
nsXPIDLCString title;
title.Adopt(ToNewUTF8String(mTitle));
GtkWindow *parent_widget =
GTK_WINDOW(mParentWidget->GetNativeData(NS_NATIVE_SHELLWIDGET));
GtkFileChooserAction action = GetGtkFileChooserAction(mMode);
const gchar *accept_button = (action == GTK_FILE_CHOOSER_ACTION_SAVE)
? GTK_STOCK_SAVE : GTK_STOCK_OPEN;
GtkWidget *file_chooser =
gtk_file_chooser_dialog_new(title, parent_widget, action,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
accept_button, GTK_RESPONSE_ACCEPT,
nullptr);
gtk_dialog_set_alternative_button_order(GTK_DIALOG(file_chooser),
GTK_RESPONSE_ACCEPT,
GTK_RESPONSE_CANCEL,
-1);
if (mAllowURLs) {
gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(file_chooser), FALSE);
}
if (action == GTK_FILE_CHOOSER_ACTION_OPEN || action == GTK_FILE_CHOOSER_ACTION_SAVE) {
GtkWidget *img_preview = gtk_image_new();
gtk_file_chooser_set_preview_widget(GTK_FILE_CHOOSER(file_chooser), img_preview);
g_signal_connect(file_chooser, "update-preview", G_CALLBACK(UpdateFilePreviewWidget), img_preview);
}
GtkWindow *window = GTK_WINDOW(file_chooser);
gtk_window_set_modal(window, TRUE);
if (parent_widget) {
gtk_window_set_destroy_with_parent(window, TRUE);
}
NS_ConvertUTF16toUTF8 defaultName(mDefault);
switch (mMode) {
case nsIFilePicker::modeOpenMultiple:
gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(file_chooser), TRUE);
break;
case nsIFilePicker::modeSave:
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(file_chooser),
defaultName.get());
break;
}
nsCOMPtr<nsIFile> defaultPath;
if (mDisplayDirectory) {
mDisplayDirectory->Clone(getter_AddRefs(defaultPath));
} else if (mPrevDisplayDirectory) {
mPrevDisplayDirectory->Clone(getter_AddRefs(defaultPath));
}
if (defaultPath) {
if (!defaultName.IsEmpty() && mMode != nsIFilePicker::modeSave) {
// Try to select the intended file. Even if it doesn't exist, GTK still switches
// directories.
defaultPath->AppendNative(defaultName);
nsAutoCString path;
defaultPath->GetNativePath(path);
gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(file_chooser), path.get());
} else {
nsAutoCString directory;
defaultPath->GetNativePath(directory);
#if (MOZ_WIDGET_GTK == 3)
// Workaround for problematic refcounting in GTK3 before 3.16.
// We need to keep a reference to the dialog's internal delegate.
// Otherwise, if our dialog gets destroyed, we'll lose the dialog's
// delegate by the time this gets processed in the event loop.
// See: https://bugzilla.mozilla.org/show_bug.cgi?id=1166741
GtkDialog *dialog = GTK_DIALOG(file_chooser);
GtkContainer *area = GTK_CONTAINER(gtk_dialog_get_content_area(dialog));
gtk_container_forall(area, [](GtkWidget *widget,
gpointer data) {
if (GTK_IS_FILE_CHOOSER_WIDGET(widget)) {
auto result = static_cast<GtkFileChooserWidget**>(data);
*result = GTK_FILE_CHOOSER_WIDGET(widget);
}
}, &mFileChooserDelegate);
if (mFileChooserDelegate)
g_object_ref(mFileChooserDelegate);
#endif
gtk_file_chooser_set_current_folder(GTK_FILE_CHOOSER(file_chooser),
directory.get());
}
}
gtk_dialog_set_default_response(GTK_DIALOG(file_chooser), GTK_RESPONSE_ACCEPT);
int32_t count = mFilters.Length();
for (int32_t i = 0; i < count; ++i) {
// This is fun... the GTK file picker does not accept a list of filters
// so we need to split out each string, and add it manually.
char **patterns = g_strsplit(mFilters[i].get(), ";", -1);
if (!patterns) {
return NS_ERROR_OUT_OF_MEMORY;
}
GtkFileFilter *filter = gtk_file_filter_new();
for (int j = 0; patterns[j] != nullptr; ++j) {
nsAutoCString caseInsensitiveFilter = MakeCaseInsensitiveShellGlob(g_strstrip(patterns[j]));
gtk_file_filter_add_pattern(filter, caseInsensitiveFilter.get());
}
g_strfreev(patterns);
if (!mFilterNames[i].IsEmpty()) {
// If we have a name for our filter, let's use that.
const char *filter_name = mFilterNames[i].get();
gtk_file_filter_set_name(filter, filter_name);
} else {
// If we don't have a name, let's just use the filter pattern.
const char *filter_pattern = mFilters[i].get();
gtk_file_filter_set_name(filter, filter_pattern);
}
gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(file_chooser), filter);
// Set the initially selected filter
if (mSelectedType == i) {
gtk_file_chooser_set_filter(GTK_FILE_CHOOSER(file_chooser), filter);
}
}
gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(file_chooser), TRUE);
mRunning = true;
mCallback = aCallback;
NS_ADDREF_THIS();
g_signal_connect(file_chooser, "response", G_CALLBACK(OnResponse), this);
g_signal_connect(file_chooser, "destroy", G_CALLBACK(OnDestroy), this);
gtk_widget_show(file_chooser);
return NS_OK;
}
/* static */ void
nsFilePicker::OnResponse(GtkWidget* file_chooser, gint response_id,
gpointer user_data)
{
static_cast<nsFilePicker*>(user_data)->
Done(file_chooser, response_id);
}
/* static */ void
nsFilePicker::OnDestroy(GtkWidget* file_chooser, gpointer user_data)
{
static_cast<nsFilePicker*>(user_data)->
Done(file_chooser, GTK_RESPONSE_CANCEL);
}
void
nsFilePicker::Done(GtkWidget* file_chooser, gint response)
{
mRunning = false;
int16_t result;
switch (response) {
case GTK_RESPONSE_OK:
case GTK_RESPONSE_ACCEPT:
ReadValuesFromFileChooser(file_chooser);
result = nsIFilePicker::returnOK;
if (mMode == nsIFilePicker::modeSave) {
nsCOMPtr<nsIFile> file;
GetFile(getter_AddRefs(file));
if (file) {
bool exists = false;
file->Exists(&exists);
if (exists)
result = nsIFilePicker::returnReplace;
}
}
break;
case GTK_RESPONSE_CANCEL:
case GTK_RESPONSE_CLOSE:
case GTK_RESPONSE_DELETE_EVENT:
result = nsIFilePicker::returnCancel;
break;
default:
NS_WARNING("Unexpected response");
result = nsIFilePicker::returnCancel;
break;
}
// A "response" signal won't be sent again but "destroy" will be.
g_signal_handlers_disconnect_by_func(file_chooser,
FuncToGpointer(OnDestroy), this);
// When response_id is GTK_RESPONSE_DELETE_EVENT or when called from
// OnDestroy, the widget would be destroyed anyway but it is fine if
// gtk_widget_destroy is called more than once. gtk_widget_destroy has
// requests that any remaining references be released, but the reference
// count will not be decremented again if GtkWindow's reference has already
// been released.
gtk_widget_destroy(file_chooser);
#if (MOZ_WIDGET_GTK == 3)
if (mFileChooserDelegate) {
// Properly deref our acquired reference. We call this after
// gtk_widget_destroy() to try and ensure that pending file info
// queries caused by updating the current folder have been cancelled.
// However, we do not know for certain when the callback will run after
// cancelled.
g_idle_add([](gpointer data) -> gboolean {
g_object_unref(data);
return G_SOURCE_REMOVE;
}, mFileChooserDelegate);
mFileChooserDelegate = nullptr;
}
#endif
if (mCallback) {
mCallback->Done(result);
mCallback = nullptr;
} else {
mResult = result;
}
NS_RELEASE_THIS();
}
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