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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
static bool exeIsAvailable (const char* const executable)
{
ChildProcess child;
const bool ok = child.start ("which " + String (executable))
&& child.readAllProcessOutput().trim().isNotEmpty();
child.waitForProcessToFinish (60 * 1000);
return ok;
}
bool FileChooser::isPlatformDialogAvailable()
{
#if JUCE_DISABLE_NATIVE_FILECHOOSERS
return false;
#else
static bool canUseNativeBox = exeIsAvailable ("zenity") || exeIsAvailable ("kdialog");
return canUseNativeBox;
#endif
}
static uint64 getTopWindowID() noexcept
{
if (TopLevelWindow* top = TopLevelWindow::getActiveTopLevelWindow())
return (uint64) (pointer_sized_uint) top->getWindowHandle();
return 0;
}
static bool isKdeFullSession()
{
return SystemStats::getEnvironmentVariable ("KDE_FULL_SESSION", String())
.equalsIgnoreCase ("true");
}
static void addKDialogArgs (StringArray& args, String& separator,
const String& title, const File& file, const String& filters,
bool isDirectory, bool isSave, bool selectMultipleFiles)
{
args.add ("kdialog");
if (title.isNotEmpty())
args.add ("--title=" + title);
if (uint64 topWindowID = getTopWindowID())
{
args.add ("--attach");
args.add (String (topWindowID));
}
if (selectMultipleFiles)
{
separator = "\n";
args.add ("--multiple");
args.add ("--separate-output");
args.add ("--getopenfilename");
}
else
{
if (isSave) args.add ("--getsavefilename");
else if (isDirectory) args.add ("--getexistingdirectory");
else args.add ("--getopenfilename");
}
File startPath;
if (file.exists())
{
startPath = file;
}
else if (file.getParentDirectory().exists())
{
startPath = file.getParentDirectory();
}
else
{
startPath = File::getSpecialLocation (File::userHomeDirectory);
if (isSave)
startPath = startPath.getChildFile (file.getFileName());
}
args.add (startPath.getFullPathName());
args.add (filters.replaceCharacter (';', ' '));
}
static void addZenityArgs (StringArray& args, String& separator,
const String& title, const File& file, const String& filters,
bool isDirectory, bool isSave, bool selectMultipleFiles)
{
args.add ("zenity");
args.add ("--file-selection");
if (title.isNotEmpty())
args.add ("--title=" + title);
if (selectMultipleFiles)
{
separator = ":";
args.add ("--multiple");
args.add ("--separator=" + separator);
}
else
{
if (isDirectory) args.add ("--directory");
if (isSave) args.add ("--save");
}
if (filters.isNotEmpty() && filters != "*" && filters != "*.*")
{
StringArray tokens;
tokens.addTokens (filters, ";,|", "\"");
for (int i = 0; i < tokens.size(); ++i)
args.add ("--file-filter=" + tokens[i]);
}
if (file.isDirectory())
file.setAsCurrentWorkingDirectory();
else if (file.getParentDirectory().exists())
file.getParentDirectory().setAsCurrentWorkingDirectory();
else
File::getSpecialLocation (File::userHomeDirectory).setAsCurrentWorkingDirectory();
if (! file.getFileName().isEmpty())
args.add ("--filename=" + file.getFileName());
// supplying the window ID of the topmost window makes sure that Zenity pops up..
if (uint64 topWindowID = getTopWindowID())
setenv ("WINDOWID", String (topWindowID).toRawUTF8(), true);
}
void FileChooser::showPlatformDialog (Array<File>& results,
const String& title, const File& file, const String& filters,
bool isDirectory, bool /* selectsFiles */,
bool isSave, bool /* warnAboutOverwritingExistingFiles */,
bool /*treatFilePackagesAsDirs*/,
bool selectMultipleFiles, FilePreviewComponent*)
{
const File previousWorkingDirectory (File::getCurrentWorkingDirectory());
StringArray args;
String separator;
// use kdialog for KDE sessions or if zenity is missing
if (exeIsAvailable ("kdialog") && (isKdeFullSession() || ! exeIsAvailable ("zenity")))
addKDialogArgs (args, separator, title, file, filters, isDirectory, isSave, selectMultipleFiles);
else
addZenityArgs (args, separator, title, file, filters, isDirectory, isSave, selectMultipleFiles);
ChildProcess child;
if (child.start (args, ChildProcess::wantStdOut))
{
const String result (child.readAllProcessOutput().trim());
if (result.isNotEmpty())
{
StringArray tokens;
if (selectMultipleFiles)
tokens.addTokens (result, separator, "\"");
else
tokens.add (result);
for (int i = 0; i < tokens.size(); ++i)
results.add (File::getCurrentWorkingDirectory().getChildFile (tokens[i]));
}
child.waitForProcessToFinish (60 * 1000);
}
previousWorkingDirectory.setAsCurrentWorkingDirectory();
}
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