gecko/widget/gtk2/nsFilePicker.cpp
2012-07-30 17:20:58 +03:00

513 lines
14 KiB
C++

/* -*- 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/Util.h"
#include <gtk/gtk.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 "prmem.h"
#include "prlink.h"
#include "nsFilePicker.h"
#if (MOZ_PLATFORM_MAEMO == 5)
#include <hildon-fm-2/hildon/hildon-file-chooser-dialog.h>
#endif
using namespace mozilla;
#define MAX_PREVIEW_SIZE 180
nsIFile *nsFilePicker::mPrevDisplayDirectory = nullptr;
// XXXdholbert -- this function is duplicated in nsPrintDialogGTK.cpp
// and needs to be unified in some generic utility class.
static GtkWindow *
get_gtk_window_for_nsiwidget(nsIWidget *widget)
{
// Get native GdkWindow
GdkWindow *gdk_win = GDK_WINDOW(widget->GetNativeData(NS_NATIVE_WIDGET));
if (!gdk_win)
return NULL;
// Get the container
gpointer user_data = NULL;
gdk_window_get_user_data(gdk_win, &user_data);
if (!user_data)
return NULL;
// Make sure its really a container
MozContainer *parent_container = MOZ_CONTAINER(user_data);
if (!parent_container)
return NULL;
// Get its toplevel
return GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(parent_container)));
}
void
nsFilePicker::Shutdown()
{
NS_IF_RELEASE(mPrevDisplayDirectory);
}
static GtkFileChooserAction
GetGtkFileChooserAction(PRInt16 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);
if (!image_filename) {
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
gint preview_width = 0;
gint preview_height = 0;
GdkPixbufFormat *preview_format = gdk_pixbuf_get_file_info(image_filename,
&preview_width,
&preview_height);
if (!preview_format) {
g_free(image_filename);
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
GdkPixbuf *preview_pixbuf;
// 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, NULL);
}
else {
preview_pixbuf = gdk_pixbuf_new_from_file(image_filename, NULL);
}
g_free(image_filename);
if (!preview_pixbuf) {
gtk_file_chooser_set_preview_widget_active(file_chooser, FALSE);
return;
}
// 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 nsCAutoString
MakeCaseInsensitiveShellGlob(const char* aPattern) {
// aPattern is UTF8
nsCAutoString 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_ISUPPORTS1(nsFilePicker, nsIFilePicker)
nsFilePicker::nsFilePicker()
: mMode(nsIFilePicker::modeOpen),
mSelectedType(0),
mAllowURLs(false)
{
}
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<PRInt16>(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,
PRInt16 aMode)
{
mParentWidget = aParent;
mTitle.Assign(aTitle);
mMode = aMode;
}
NS_IMETHODIMP
nsFilePicker::AppendFilters(PRInt32 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;
}
nsCAutoString 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(PRInt32 *aFilterIndex)
{
*aFilterIndex = mSelectedType;
return NS_OK;
}
NS_IMETHODIMP
nsFilePicker::SetFilterIndex(PRInt32 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);
return CallQueryInterface(file, aFile);
}
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(PRInt16 *aReturn)
{
NS_ENSURE_ARG_POINTER(aReturn);
nsXPIDLCString title;
title.Adopt(ToNewUTF8String(mTitle));
GtkWindow *parent_widget = get_gtk_window_for_nsiwidget(mParentWidget);
GtkFileChooserAction action = GetGtkFileChooserAction(mMode);
const gchar *accept_button = (action == GTK_FILE_CHOOSER_ACTION_SAVE)
? GTK_STOCK_SAVE : GTK_STOCK_OPEN;
#if (MOZ_PLATFORM_MAEMO == 5)
GtkWidget *file_chooser =
hildon_file_chooser_dialog_new_with_properties(parent_widget,
"action", action,
"open-button-text", accept_button,
NULL);
gtk_window_set_title(GTK_WINDOW(file_chooser), title);
#else
GtkWidget *file_chooser =
gtk_file_chooser_dialog_new(title, parent_widget, action,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
accept_button, GTK_RESPONSE_ACCEPT,
NULL);
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);
}
#endif
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);
}
if (parent_widget && parent_widget->group) {
gtk_window_group_add_window(parent_widget->group, GTK_WINDOW(file_chooser));
}
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);
nsCAutoString path;
defaultPath->GetNativePath(path);
gtk_file_chooser_set_filename(GTK_FILE_CHOOSER(file_chooser), path.get());
} else {
nsCAutoString directory;
defaultPath->GetNativePath(directory);
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);
PRInt32 count = mFilters.Length();
for (PRInt32 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] != NULL; ++j) {
nsCAutoString 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);
gint response = gtk_dialog_run(GTK_DIALOG(file_chooser));
switch (response) {
case GTK_RESPONSE_OK:
case GTK_RESPONSE_ACCEPT:
ReadValuesFromFileChooser(file_chooser);
*aReturn = nsIFilePicker::returnOK;
if (mMode == nsIFilePicker::modeSave) {
nsCOMPtr<nsIFile> file;
GetFile(getter_AddRefs(file));
if (file) {
bool exists = false;
file->Exists(&exists);
if (exists)
*aReturn = nsIFilePicker::returnReplace;
}
}
break;
case GTK_RESPONSE_CANCEL:
case GTK_RESPONSE_CLOSE:
case GTK_RESPONSE_DELETE_EVENT:
*aReturn = nsIFilePicker::returnCancel;
break;
default:
NS_WARNING("Unexpected response");
*aReturn = nsIFilePicker::returnCancel;
break;
}
gtk_widget_destroy(file_chooser);
return NS_OK;
}