mirror of
https://github.com/juce-framework/JUCE.git
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292 lines
9.7 KiB
C++
292 lines
9.7 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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//==============================================================================
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class FileChooser::NonNative final : public std::enable_shared_from_this<NonNative>,
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public FileChooser::Pimpl
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{
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public:
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NonNative (FileChooser& fileChooser, int flags, FilePreviewComponent* preview)
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: owner (fileChooser),
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selectsDirectories ((flags & FileBrowserComponent::canSelectDirectories) != 0),
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selectsFiles ((flags & FileBrowserComponent::canSelectFiles) != 0),
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warnAboutOverwrite ((flags & FileBrowserComponent::warnAboutOverwriting) != 0),
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filter (selectsFiles ? owner.filters : String(), selectsDirectories ? "*" : String(), {}),
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browserComponent (flags, owner.startingFile, &filter, preview),
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dialogBox (owner.title, {}, browserComponent, warnAboutOverwrite,
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browserComponent.findColour (AlertWindow::backgroundColourId), owner.parent)
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{}
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~NonNative() override
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{
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dialogBox.exitModalState (0);
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}
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void launch() override
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{
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dialogBox.centreWithDefaultSize (nullptr);
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const std::weak_ptr<NonNative> ref (shared_from_this());
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auto* callback = ModalCallbackFunction::create ([ref] (int r)
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{
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if (auto locked = ref.lock())
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locked->modalStateFinished (r);
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});
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dialogBox.enterModalState (true, callback, 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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modalStateFinished (dialogBox.show() ? 1 : 0);
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#else
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jassertfalse;
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#endif
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}
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private:
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void modalStateFinished (int returnValue)
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{
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Array<URL> result;
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if (returnValue != 0)
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{
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for (int i = 0; i < browserComponent.getNumSelectedFiles(); ++i)
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result.add (URL (browserComponent.getSelectedFile (i)));
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}
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owner.finished (result);
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}
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//==============================================================================
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FileChooser& owner;
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bool selectsDirectories, selectsFiles, warnAboutOverwrite;
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WildcardFileFilter filter;
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FileBrowserComponent browserComponent;
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FileChooserDialogBox dialogBox;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NonNative)
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};
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//==============================================================================
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FileChooser::FileChooser (const String& chooserBoxTitle,
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const File& currentFileOrDirectory,
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const String& fileFilters,
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const bool useNativeBox,
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const bool treatFilePackagesAsDirectories,
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Component* parentComponentToUse)
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: title (chooserBoxTitle),
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filters (fileFilters),
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startingFile (currentFileOrDirectory),
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parent (parentComponentToUse),
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useNativeDialogBox (useNativeBox && isPlatformDialogAvailable()),
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treatFilePackagesAsDirs (treatFilePackagesAsDirectories)
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{
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#ifndef JUCE_MAC
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ignoreUnused (treatFilePackagesAsDirs);
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#endif
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if (! fileFilters.containsNonWhitespaceChars())
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filters = "*";
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}
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FileChooser::~FileChooser()
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{
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asyncCallback = nullptr;
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}
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#if JUCE_MODAL_LOOPS_PERMITTED
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bool FileChooser::browseForFileToOpen (FilePreviewComponent* previewComp)
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{
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return showDialog (FileBrowserComponent::openMode
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| FileBrowserComponent::canSelectFiles,
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previewComp);
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}
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bool FileChooser::browseForMultipleFilesToOpen (FilePreviewComponent* previewComp)
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{
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return showDialog (FileBrowserComponent::openMode
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| FileBrowserComponent::canSelectFiles
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| FileBrowserComponent::canSelectMultipleItems,
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previewComp);
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}
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bool FileChooser::browseForMultipleFilesOrDirectories (FilePreviewComponent* previewComp)
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{
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return showDialog (FileBrowserComponent::openMode
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| FileBrowserComponent::canSelectFiles
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| FileBrowserComponent::canSelectDirectories
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| FileBrowserComponent::canSelectMultipleItems,
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previewComp);
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}
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bool FileChooser::browseForFileToSave (const bool warnAboutOverwrite)
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{
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return showDialog (FileBrowserComponent::saveMode
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| FileBrowserComponent::canSelectFiles
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| (warnAboutOverwrite ? FileBrowserComponent::warnAboutOverwriting : 0),
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nullptr);
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}
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bool FileChooser::browseForDirectory()
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{
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return showDialog (FileBrowserComponent::openMode
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| FileBrowserComponent::canSelectDirectories,
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nullptr);
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}
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bool FileChooser::showDialog (const int flags, FilePreviewComponent* const previewComp)
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{
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detail::FocusRestorer focusRestorer;
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pimpl = createPimpl (flags, previewComp);
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pimpl->runModally();
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// ensure that the finished function was invoked
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jassert (pimpl == nullptr);
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return (results.size() > 0);
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}
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#endif
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void FileChooser::launchAsync (int flags, std::function<void (const FileChooser&)> callback,
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FilePreviewComponent* previewComp)
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{
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// You must specify a callback when using launchAsync
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jassert (callback);
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// you cannot run two file chooser dialog boxes at the same time
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jassert (asyncCallback == nullptr);
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asyncCallback = std::move (callback);
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pimpl = createPimpl (flags, previewComp);
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pimpl->launch();
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}
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std::shared_ptr<FileChooser::Pimpl> FileChooser::createPimpl (int flags, FilePreviewComponent* previewComp)
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{
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results.clear();
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// the preview component needs to be the right size before you pass it in here
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jassert (previewComp == nullptr || (previewComp->getWidth() > 10
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&& previewComp->getHeight() > 10));
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if (pimpl != nullptr)
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{
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// you cannot run two file chooser dialog boxes at the same time
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jassertfalse;
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pimpl.reset();
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}
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// You've set the flags for both saveMode and openMode!
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jassert (! (((flags & FileBrowserComponent::saveMode) != 0)
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&& ((flags & FileBrowserComponent::openMode) != 0)));
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#if JUCE_WINDOWS
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const bool selectsFiles = (flags & FileBrowserComponent::canSelectFiles) != 0;
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const bool selectsDirectories = (flags & FileBrowserComponent::canSelectDirectories) != 0;
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if (useNativeDialogBox && ! (selectsFiles && selectsDirectories))
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#else
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if (useNativeDialogBox)
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#endif
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{
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return showPlatformDialog (*this, flags, previewComp);
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}
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return std::make_unique<NonNative> (*this, flags, previewComp);
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}
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Array<File> FileChooser::getResults() const noexcept
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{
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Array<File> files;
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for (auto url : getURLResults())
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if (url.isLocalFile())
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files.add (url.getLocalFile());
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return files;
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}
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File FileChooser::getResult() const
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{
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auto fileResults = getResults();
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// if you've used a multiple-file select, you should use the getResults() method
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// to retrieve all the files that were chosen.
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jassert (fileResults.size() <= 1);
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return fileResults.getFirst();
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}
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URL FileChooser::getURLResult() const
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{
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// if you've used a multiple-file select, you should use the getResults() method
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// to retrieve all the files that were chosen.
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jassert (results.size() <= 1);
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return results.getFirst();
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}
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void FileChooser::finished (const Array<URL>& asyncResults)
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{
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const auto callback = std::exchange (asyncCallback, nullptr);
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results = asyncResults;
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pimpl.reset();
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if (callback)
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callback (*this);
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}
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#if ! JUCE_ANDROID
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void FileChooser::registerCustomMimeTypeForFileExtension ([[maybe_unused]] const String& mimeType,
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[[maybe_unused]] const String& fileExtension)
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{
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}
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#endif
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//==============================================================================
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FilePreviewComponent::FilePreviewComponent() {}
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FilePreviewComponent::~FilePreviewComponent() {}
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} // namespace juce
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