mirror of
https://github.com/juce-framework/JUCE.git
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296 lines
9.1 KiB
C++
296 lines
9.1 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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static bool exeIsAvailable (String executable)
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{
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ChildProcess child;
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if (child.start ("which " + executable))
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{
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child.waitForProcessToFinish (60 * 1000);
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return (child.getExitCode() == 0);
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}
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return false;
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}
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static bool isSet (int flags, int toCheck)
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{
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return (flags & toCheck) != 0;
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}
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class FileChooser::Native final : public FileChooser::Pimpl,
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private Timer
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{
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public:
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Native (FileChooser& fileChooser, int flags)
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: owner (fileChooser),
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// kdialog/zenity only support opening either files or directories.
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// Files should take precedence, if requested.
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isDirectory (isSet (flags, FileBrowserComponent::canSelectDirectories) && ! isSet (flags, FileBrowserComponent::canSelectFiles)),
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isSave (isSet (flags, FileBrowserComponent::saveMode)),
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selectMultipleFiles (isSet (flags, FileBrowserComponent::canSelectMultipleItems)),
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warnAboutOverwrite (isSet (flags, FileBrowserComponent::warnAboutOverwriting))
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{
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const File previousWorkingDirectory (File::getCurrentWorkingDirectory());
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// use kdialog for KDE sessions or if zenity is missing
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if (exeIsAvailable ("kdialog") && (isKdeFullSession() || ! exeIsAvailable ("zenity")))
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addKDialogArgs();
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else
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addZenityArgs();
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}
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~Native() override
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{
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finish (true);
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}
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void runModally() override
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{
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#if JUCE_MODAL_LOOPS_PERMITTED
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child.start (args, ChildProcess::wantStdOut);
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while (child.isRunning())
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if (! MessageManager::getInstance()->runDispatchLoopUntil (20))
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break;
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finish (false);
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#else
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jassertfalse;
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#endif
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}
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void launch() override
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{
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child.start (args, ChildProcess::wantStdOut);
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startTimer (100);
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}
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private:
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FileChooser& owner;
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bool isDirectory, isSave, selectMultipleFiles, warnAboutOverwrite;
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ChildProcess child;
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StringArray args;
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String separator;
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void timerCallback() override
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{
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if (! child.isRunning())
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{
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stopTimer();
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finish (false);
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}
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}
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void finish (bool shouldKill)
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{
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String result;
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Array<URL> selection;
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if (shouldKill)
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child.kill();
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else
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result = child.readAllProcessOutput().trim();
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if (result.isNotEmpty())
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{
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StringArray tokens;
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if (selectMultipleFiles)
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tokens.addTokens (result, separator, "\"");
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else
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tokens.add (result);
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for (auto& token : tokens)
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selection.add (URL (File::getCurrentWorkingDirectory().getChildFile (token)));
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}
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if (! shouldKill)
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{
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child.waitForProcessToFinish (60 * 1000);
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owner.finished (selection);
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}
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}
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static uint64 getTopWindowID() noexcept
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{
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if (TopLevelWindow* top = TopLevelWindow::getActiveTopLevelWindow())
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return (uint64) (pointer_sized_uint) top->getWindowHandle();
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return 0;
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}
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static bool isKdeFullSession()
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{
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return SystemStats::getEnvironmentVariable ("KDE_FULL_SESSION", String())
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.equalsIgnoreCase ("true");
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}
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void addKDialogArgs()
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{
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args.add ("kdialog");
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if (owner.title.isNotEmpty())
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args.add ("--title=" + owner.title);
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if (uint64 topWindowID = getTopWindowID())
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{
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args.add ("--attach");
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args.add (String (topWindowID));
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}
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if (selectMultipleFiles)
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{
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separator = "\n";
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args.add ("--multiple");
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args.add ("--separate-output");
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args.add ("--getopenfilename");
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}
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else
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{
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if (isSave) args.add ("--getsavefilename");
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else if (isDirectory) args.add ("--getexistingdirectory");
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else args.add ("--getopenfilename");
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}
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File startPath;
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if (owner.startingFile.exists())
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{
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startPath = owner.startingFile;
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}
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else if (owner.startingFile.getParentDirectory().exists())
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{
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startPath = owner.startingFile.getParentDirectory();
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}
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else
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{
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startPath = File::getSpecialLocation (File::userHomeDirectory);
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if (isSave)
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startPath = startPath.getChildFile (owner.startingFile.getFileName());
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}
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args.add (startPath.getFullPathName());
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args.add ("(" + owner.filters.replaceCharacter (';', ' ') + ")");
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}
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void addZenityArgs()
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{
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args.add ("zenity");
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args.add ("--file-selection");
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const auto getUnderstandsConfirmOverwrite = []
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{
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// --confirm-overwrite is deprecated in zenity 3.91 and higher
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ChildProcess process;
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process.start ("zenity --version");
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process.waitForProcessToFinish (1000);
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const auto versionString = process.readAllProcessOutput();
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const auto version = StringArray::fromTokens (versionString.trim(), ".", "");
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return version.size() >= 2
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&& (version[0].getIntValue() < 3
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|| (version[0].getIntValue() == 3 && version[1].getIntValue() < 91));
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};
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if (warnAboutOverwrite && getUnderstandsConfirmOverwrite())
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args.add ("--confirm-overwrite");
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if (owner.title.isNotEmpty())
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args.add ("--title=" + owner.title);
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if (selectMultipleFiles)
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{
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separator = ":";
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args.add ("--multiple");
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args.add ("--separator=" + separator);
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}
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else
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{
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if (isSave)
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args.add ("--save");
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}
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if (isDirectory)
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args.add ("--directory");
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if (owner.filters.isNotEmpty() && owner.filters != "*" && owner.filters != "*.*")
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{
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StringArray tokens;
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tokens.addTokens (owner.filters, ";,|", "\"");
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args.add ("--file-filter=" + tokens.joinIntoString (" "));
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}
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if (owner.startingFile.isDirectory())
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owner.startingFile.setAsCurrentWorkingDirectory();
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else if (owner.startingFile.getParentDirectory().exists())
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owner.startingFile.getParentDirectory().setAsCurrentWorkingDirectory();
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else
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File::getSpecialLocation (File::userHomeDirectory).setAsCurrentWorkingDirectory();
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auto filename = owner.startingFile.getFileName();
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if (! filename.isEmpty())
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args.add ("--filename=" + filename);
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// supplying the window ID of the topmost window makes sure that Zenity pops up
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if (uint64 topWindowID = getTopWindowID())
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setenv ("WINDOWID", String (topWindowID).toRawUTF8(), true);
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}
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Native)
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};
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bool FileChooser::isPlatformDialogAvailable()
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{
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#if JUCE_DISABLE_NATIVE_FILECHOOSERS
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return false;
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#else
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static bool canUseNativeBox = exeIsAvailable ("zenity") || exeIsAvailable ("kdialog");
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return canUseNativeBox;
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#endif
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}
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std::shared_ptr<FileChooser::Pimpl> FileChooser::showPlatformDialog (FileChooser& owner, int flags, FilePreviewComponent*)
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{
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return std::make_shared<Native> (owner, flags);
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}
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} // namespace juce
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