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https://github.com/juce-framework/JUCE.git
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fd2f866dd1
It seems like shared_from_this may not be enabled when a unique_ptr is assigned to a shared_ptr (although it *should* be enabled when constructing a new shared_ptr from a unique_ptr). Functions that return objects that may need to use shared_from_this now return shared_ptr, just to be safe. Additionally, in some cases, shared_from_this was being called from Thread::run after the last reference to the shared object had been released. We now call shared_from_this during 'open', which will always run on the message thread while at least once reference to the shared object is alive.
395 lines
13 KiB
Text
395 lines
13 KiB
Text
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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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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static NSMutableArray* createAllowedTypesArray (const StringArray& filters)
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{
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if (filters.size() == 0)
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return nil;
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NSMutableArray* filterArray = [[[NSMutableArray alloc] init] autorelease];
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for (int i = 0; i < filters.size(); ++i)
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{
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// From OS X 10.6 you can only specify allowed extensions, so any filters containing wildcards
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// must be of the form "*.extension"
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jassert (filters[i] == "*"
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|| (filters[i].startsWith ("*.") && filters[i].lastIndexOfChar ('*') == 0));
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const String f (filters[i].replace ("*.", ""));
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if (f == "*")
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return nil;
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[filterArray addObject: juceStringToNS (f)];
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}
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return filterArray;
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}
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//==============================================================================
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class FileChooser::Native : public Component,
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public FileChooser::Pimpl
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{
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public:
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Native (FileChooser& fileChooser, int flags, FilePreviewComponent* previewComponent)
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: owner (fileChooser), preview (previewComponent),
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selectsDirectories ((flags & FileBrowserComponent::canSelectDirectories) != 0),
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selectsFiles ((flags & FileBrowserComponent::canSelectFiles) != 0),
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isSave ((flags & FileBrowserComponent::saveMode) != 0),
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selectMultiple ((flags & FileBrowserComponent::canSelectMultipleItems) != 0)
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{
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setBounds (0, 0, 0, 0);
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setOpaque (true);
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static DelegateClass delegateClass;
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static SafeSavePanel safeSavePanel;
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static SafeOpenPanel safeOpenPanel;
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panel = isSave ? [safeSavePanel.createInstance() init]
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: [safeOpenPanel.createInstance() init];
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delegate = [delegateClass.createInstance() init];
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object_setInstanceVariable (delegate, "cppObject", this);
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[panel setDelegate: delegate];
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filters.addTokens (owner.filters.replaceCharacters (",:", ";;"), ";", String());
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filters.trim();
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filters.removeEmptyStrings();
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[panel setTitle: juceStringToNS (owner.title)];
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[panel setAllowedFileTypes: createAllowedTypesArray (filters)];
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if (! isSave)
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{
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auto* openPanel = static_cast<NSOpenPanel*> (panel);
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[openPanel setCanChooseDirectories: selectsDirectories];
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[openPanel setCanChooseFiles: selectsFiles];
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[openPanel setAllowsMultipleSelection: selectMultiple];
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[openPanel setResolvesAliases: YES];
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if (owner.treatFilePackagesAsDirs)
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[openPanel setTreatsFilePackagesAsDirectories: YES];
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}
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if (preview != nullptr)
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{
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nsViewPreview = [[NSView alloc] initWithFrame: makeNSRect (preview->getLocalBounds())];
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[panel setAccessoryView: nsViewPreview];
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preview->addToDesktop (0, (void*) nsViewPreview);
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preview->setVisible (true);
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if (! isSave)
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{
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auto* openPanel = static_cast<NSOpenPanel*> (panel);
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[openPanel setAccessoryViewDisclosed: YES];
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}
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}
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if (isSave || selectsDirectories)
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[panel setCanCreateDirectories: YES];
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[panel setLevel:NSModalPanelWindowLevel];
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if (owner.startingFile.isDirectory())
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{
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startingDirectory = owner.startingFile.getFullPathName();
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}
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else
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{
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startingDirectory = owner.startingFile.getParentDirectory().getFullPathName();
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filename = owner.startingFile.getFileName();
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}
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[panel setDirectoryURL: createNSURLFromFile (startingDirectory)];
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[panel setNameFieldStringValue: juceStringToNS (filename)];
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}
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~Native() override
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{
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exitModalState (0);
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if (preview != nullptr)
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preview->removeFromDesktop();
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removeFromDesktop();
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if (panel != nil)
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{
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[panel setDelegate: nil];
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if (nsViewPreview != nil)
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{
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[panel setAccessoryView: nil];
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[nsViewPreview release];
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nsViewPreview = nil;
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preview = nullptr;
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}
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[panel close];
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[panel release];
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}
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if (delegate != nil)
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{
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[delegate release];
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delegate = nil;
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}
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}
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void launch() override
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{
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if (panel != nil)
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{
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setAlwaysOnTop (juce_areThereAnyAlwaysOnTopWindows());
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addToDesktop (0);
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enterModalState (true);
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[panel beginWithCompletionHandler:CreateObjCBlock (this, &Native::finished)];
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if (preview != nullptr)
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preview->toFront (true);
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}
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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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ensurePanelSafe();
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std::unique_ptr<TemporaryMainMenuWithStandardCommands> tempMenu;
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if (JUCEApplicationBase::isStandaloneApp())
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tempMenu = std::make_unique<TemporaryMainMenuWithStandardCommands> (preview);
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jassert (panel != nil);
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auto result = [panel runModal];
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finished (result);
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#else
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jassertfalse;
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#endif
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}
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bool canModalEventBeSentToComponent (const Component* targetComponent) override
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{
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return TemporaryMainMenuWithStandardCommands::checkModalEvent (preview, targetComponent);
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}
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private:
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//==============================================================================
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typedef NSObject<NSOpenSavePanelDelegate> DelegateType;
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void finished (NSInteger result)
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{
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Array<URL> chooserResults;
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exitModalState (0);
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if (panel != nil && result ==
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#if defined (MAC_OS_X_VERSION_10_9) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_9
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NSModalResponseOK)
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#else
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NSFileHandlingPanelOKButton)
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#endif
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{
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auto addURLResult = [&chooserResults] (NSURL* urlToAdd)
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{
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auto scheme = nsStringToJuce ([urlToAdd scheme]);
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auto pathComponents = StringArray::fromTokens (nsStringToJuce ([urlToAdd path]), "/", {});
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for (auto& component : pathComponents)
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component = URL::addEscapeChars (component, false);
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chooserResults.add (URL (scheme + "://" + pathComponents.joinIntoString ("/")));
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};
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if (isSave)
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{
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addURLResult ([panel URL]);
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}
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else
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{
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auto* openPanel = static_cast<NSOpenPanel*> (panel);
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auto urls = [openPanel URLs];
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for (unsigned int i = 0; i < [urls count]; ++i)
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addURLResult ([urls objectAtIndex: i]);
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}
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}
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owner.finished (chooserResults);
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}
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bool shouldShowFilename (const String& filenameToTest)
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{
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const File f (filenameToTest);
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auto nsFilename = juceStringToNS (filenameToTest);
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for (int i = filters.size(); --i >= 0;)
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if (f.getFileName().matchesWildcard (filters[i], true))
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return true;
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return f.isDirectory()
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&& ! [[NSWorkspace sharedWorkspace] isFilePackageAtPath: nsFilename];
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}
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void panelSelectionDidChange (id sender)
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{
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jassert (sender == panel);
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ignoreUnused (sender);
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// NB: would need to extend FilePreviewComponent to handle the full list rather than just the first one
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if (preview != nullptr)
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preview->selectedFileChanged (File (getSelectedPaths()[0]));
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}
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StringArray getSelectedPaths() const
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{
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if (panel == nullptr)
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return {};
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StringArray paths;
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if (isSave)
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{
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paths.add (nsStringToJuce ([[panel URL] path]));
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}
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else
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{
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auto* urls = [static_cast<NSOpenPanel*> (panel) URLs];
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for (NSUInteger i = 0; i < [urls count]; ++i)
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paths.add (nsStringToJuce ([[urls objectAtIndex: i] path]));
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}
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return paths;
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}
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//==============================================================================
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FileChooser& owner;
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FilePreviewComponent* preview;
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NSView* nsViewPreview = nullptr;
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bool selectsDirectories, selectsFiles, isSave, selectMultiple;
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NSSavePanel* panel;
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DelegateType* delegate;
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StringArray filters;
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String startingDirectory, filename;
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void ensurePanelSafe()
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{
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// If you hit this, something (probably the plugin host) has modified the panel,
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// allowing the application to terminate while the panel's modal loop is running.
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// This is a very bad idea! Quitting from within the panel's modal loop may cause
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// your plugin/app destructor to run directly from within `runModally`, which will
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// dispose all app resources while they're still in use.
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// A safer alternative is to invoke the FileChooser with `launchAsync`, rather than
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// using the modal launchers.
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jassert ([panel preventsApplicationTerminationWhenModal]);
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}
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static BOOL preventsApplicationTerminationWhenModal() { return YES; }
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template <typename Base>
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struct SafeModalPanel : public ObjCClass<Base>
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{
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explicit SafeModalPanel (const char* name) : ObjCClass<Base> (name)
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{
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this->addMethod (@selector (preventsApplicationTerminationWhenModal),
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preventsApplicationTerminationWhenModal,
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"c@:");
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this->registerClass();
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}
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};
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struct SafeSavePanel : SafeModalPanel<NSSavePanel>
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{
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SafeSavePanel() : SafeModalPanel ("SaveSavePanel_") {}
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};
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struct SafeOpenPanel : SafeModalPanel<NSOpenPanel>
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{
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SafeOpenPanel() : SafeModalPanel ("SaveOpenPanel_") {}
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};
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//==============================================================================
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struct DelegateClass : public ObjCClass<DelegateType>
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{
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DelegateClass() : ObjCClass<DelegateType> ("JUCEFileChooser_")
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{
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addIvar<Native*> ("cppObject");
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addMethod (@selector (panel:shouldShowFilename:), shouldShowFilename, "c@:@@");
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addMethod (@selector (panelSelectionDidChange:), panelSelectionDidChange, "c@");
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addProtocol (@protocol (NSOpenSavePanelDelegate));
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registerClass();
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}
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private:
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static BOOL shouldShowFilename (id self, SEL, id /*sender*/, NSString* filename)
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{
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auto* _this = getIvar<Native*> (self, "cppObject");
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return _this->shouldShowFilename (nsStringToJuce (filename)) ? YES : NO;
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}
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static void panelSelectionDidChange (id self, SEL, id sender)
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{
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auto* _this = getIvar<Native*> (self, "cppObject");
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_this->panelSelectionDidChange (sender);
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}
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};
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Native)
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};
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std::shared_ptr<FileChooser::Pimpl> FileChooser::showPlatformDialog (FileChooser& owner, int flags,
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FilePreviewComponent* preview)
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{
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return std::make_shared<FileChooser::Native> (owner, flags, preview);
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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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return true;
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#endif
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}
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}
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