juicysfplugin/modules/juce_gui_basics/native/juce_mac_FileChooser.mm

367 lines
12 KiB
Plaintext

/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2017 - ROLI Ltd.
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
27th April 2017).
End User License Agreement: www.juce.com/juce-5-licence
Privacy Policy: www.juce.com/juce-5-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
//==============================================================================
static NSMutableArray* createAllowedTypesArray (const StringArray& filters)
{
if (filters.size() == 0)
return nil;
NSMutableArray* filterArray = [[[NSMutableArray alloc] init] autorelease];
for (int i = 0; i < filters.size(); ++i)
{
#if defined (MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
// From OS X 10.6 you can only specify allowed extensions, so any filters containing wildcards
// must be of the form "*.extension"
jassert (filters[i] == "*"
|| (filters[i].startsWith ("*.") && filters[i].lastIndexOfChar ('*') == 0));
#endif
const String f (filters[i].replace ("*.", ""));
if (f == "*")
return nil;
[filterArray addObject: juceStringToNS (f)];
}
return filterArray;
}
//==============================================================================
class FileChooser::Native : public Component,
public FileChooser::Pimpl
{
public:
Native (FileChooser& fileChooser, int flags, FilePreviewComponent* previewComponent)
: owner (fileChooser), preview (previewComponent),
selectsDirectories ((flags & FileBrowserComponent::canSelectDirectories) != 0),
selectsFiles ((flags & FileBrowserComponent::canSelectFiles) != 0),
isSave ((flags & FileBrowserComponent::saveMode) != 0),
selectMultiple ((flags & FileBrowserComponent::canSelectMultipleItems) != 0),
panel (isSave ? [[NSSavePanel alloc] init] : [[NSOpenPanel alloc] init])
{
setBounds (0, 0, 0, 0);
setOpaque (true);
static DelegateClass cls;
delegate = [cls.createInstance() init];
object_setInstanceVariable (delegate, "cppObject", this);
[panel setDelegate: delegate];
filters.addTokens (owner.filters.replaceCharacters (",:", ";;"), ";", String());
filters.trim();
filters.removeEmptyStrings();
[panel setTitle: juceStringToNS (owner.title)];
[panel setAllowedFileTypes: createAllowedTypesArray (filters)];
if (! isSave)
{
NSOpenPanel* openPanel = (NSOpenPanel*) panel;
[openPanel setCanChooseDirectories: selectsDirectories];
[openPanel setCanChooseFiles: selectsFiles];
[openPanel setAllowsMultipleSelection: selectMultiple];
[openPanel setResolvesAliases: YES];
if (owner.treatFilePackagesAsDirs)
[openPanel setTreatsFilePackagesAsDirectories: YES];
}
if (preview != nullptr)
{
nsViewPreview = [[NSView alloc] initWithFrame: makeNSRect (preview->getLocalBounds())];
preview->addToDesktop (0, (void*) nsViewPreview);
preview->setVisible (true);
[panel setAccessoryView: nsViewPreview];
}
if (isSave || selectsDirectories)
[panel setCanCreateDirectories: YES];
[panel setLevel:NSModalPanelWindowLevel];
if (owner.startingFile.isDirectory())
{
startingDirectory = owner.startingFile.getFullPathName();
}
else
{
startingDirectory = owner.startingFile.getParentDirectory().getFullPathName();
filename = owner.startingFile.getFileName();
}
#if defined (MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
[panel setDirectoryURL: createNSURLFromFile (startingDirectory)];
[panel setNameFieldStringValue: juceStringToNS (filename)];
#endif
}
~Native() override
{
exitModalState (0);
removeFromDesktop();
if (panel != nil)
{
[panel setDelegate: nil];
if (nsViewPreview != nil)
{
[panel setAccessoryView: nil];
[nsViewPreview release];
nsViewPreview = nil;
preview = nullptr;
}
[panel close];
[panel release];
}
if (delegate != nil)
{
[delegate release];
delegate = nil;
}
}
void launch() override
{
if (panel != nil)
{
setAlwaysOnTop (juce_areThereAnyAlwaysOnTopWindows());
addToDesktop (0);
enterModalState (true);
[panel beginWithCompletionHandler:CreateObjCBlock (this, &Native::finished)];
}
}
void runModally() override
{
std::unique_ptr<TemporaryMainMenuWithStandardCommands> tempMenu;
if (JUCEApplicationBase::isStandaloneApp())
tempMenu.reset (new TemporaryMainMenuWithStandardCommands());
jassert (panel != nil);
#if defined (MAC_OS_X_VERSION_10_6) && (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_6)
auto result = [panel runModal];
#else
auto result = [panel runModalForDirectory: juceStringToNS (startingDirectory)
file: juceStringToNS (filename)];
#endif
finished (result);
}
bool canModalEventBeSentToComponent (const Component* targetComponent) override
{
if (targetComponent == nullptr)
return false;
return targetComponent->findParentComponentOfClass<FilePreviewComponent>() != nullptr;
}
private:
//==============================================================================
#if defined (MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
typedef NSObject<NSOpenSavePanelDelegate> DelegateType;
#else
typedef NSObject DelegateType;
#endif
void finished (NSInteger result)
{
Array<URL> chooserResults;
exitModalState (0);
if (panel != nil && result ==
#if defined (MAC_OS_X_VERSION_10_9) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_9
NSModalResponseOK)
#else
NSFileHandlingPanelOKButton)
#endif
{
auto addURLResult = [&chooserResults] (NSURL* urlToAdd)
{
auto scheme = nsStringToJuce ([urlToAdd scheme]);
auto pathComponents = StringArray::fromTokens (nsStringToJuce ([urlToAdd path]), "/", {});
for (auto& component : pathComponents)
component = URL::addEscapeChars (component, false);
chooserResults.add (URL (scheme + "://" + pathComponents.joinIntoString ("/")));
};
if (isSave)
{
addURLResult ([panel URL]);
}
else
{
auto* openPanel = (NSOpenPanel*) panel;
auto urls = [openPanel URLs];
for (unsigned int i = 0; i < [urls count]; ++i)
addURLResult ([urls objectAtIndex: i]);
}
}
owner.finished (chooserResults);
}
bool shouldShowFilename (const String& filenameToTest)
{
const File f (filenameToTest);
auto nsFilename = juceStringToNS (filenameToTest);
for (int i = filters.size(); --i >= 0;)
if (f.getFileName().matchesWildcard (filters[i], true))
return true;
#if (! defined (MAC_OS_X_VERSION_10_7)) || MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7
NSError* error;
NSString* name = [[NSWorkspace sharedWorkspace] typeOfFile: nsFilename error: &error];
if ([name isEqualToString: nsStringLiteral ("com.apple.alias-file")])
{
FSRef ref;
FSPathMakeRef ((const UInt8*) [nsFilename fileSystemRepresentation], &ref, nullptr);
Boolean targetIsFolder = false, wasAliased = false;
FSResolveAliasFileWithMountFlags (&ref, true, &targetIsFolder, &wasAliased, 0);
return wasAliased && targetIsFolder;
}
#endif
return f.isDirectory()
&& ! [[NSWorkspace sharedWorkspace] isFilePackageAtPath: nsFilename];
}
void panelSelectionDidChange (id sender)
{
// NB: would need to extend FilePreviewComponent to handle the full list rather than just the first one
if (preview != nullptr)
preview->selectedFileChanged (File (getSelectedPaths (sender)[0]));
}
static StringArray getSelectedPaths (id sender)
{
StringArray paths;
if ([sender isKindOfClass: [NSOpenPanel class]])
{
NSArray* urls = [(NSOpenPanel*) sender URLs];
for (NSUInteger i = 0; i < [urls count]; ++i)
paths.add (nsStringToJuce ([[urls objectAtIndex: i] path]));
}
else if ([sender isKindOfClass: [NSSavePanel class]])
{
paths.add (nsStringToJuce ([[(NSSavePanel*) sender URL] path]));
}
return paths;
}
//==============================================================================
FileChooser& owner;
FilePreviewComponent* preview;
NSView* nsViewPreview = nullptr;
bool selectsDirectories, selectsFiles, isSave, selectMultiple;
NSSavePanel* panel;
DelegateType* delegate;
StringArray filters;
String startingDirectory, filename;
//==============================================================================
struct DelegateClass : ObjCClass<DelegateType>
{
DelegateClass() : ObjCClass <DelegateType> ("JUCEFileChooser_")
{
addIvar<Native*> ("cppObject");
addMethod (@selector (panel:shouldShowFilename:), shouldShowFilename, "c@:@@");
addMethod (@selector (panelSelectionDidChange:), panelSelectionDidChange, "c@");
#if defined (MAC_OS_X_VERSION_10_6) && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
addProtocol (@protocol (NSOpenSavePanelDelegate));
#endif
registerClass();
}
private:
static BOOL shouldShowFilename (id self, SEL, id /*sender*/, NSString* filename)
{
auto* _this = getIvar<Native*> (self, "cppObject");
return _this->shouldShowFilename (nsStringToJuce (filename)) ? YES : NO;
}
static void panelSelectionDidChange (id self, SEL, id sender)
{
auto* _this = getIvar<Native*> (self, "cppObject");
_this->panelSelectionDidChange (sender);
}
};
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Native)
};
FileChooser::Pimpl* FileChooser::showPlatformDialog (FileChooser& owner, int flags,
FilePreviewComponent* preview)
{
return new FileChooser::Native (owner, flags, preview);
}
bool FileChooser::isPlatformDialogAvailable()
{
#if JUCE_DISABLE_NATIVE_FILECHOOSERS
return false;
#else
return true;
#endif
}
}