/* ============================================================================== 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. ============================================================================== */ #pragma once //============================================================================== /** Creates a dialog box to choose a file or directory to load or save. To use a FileChooser: - create one (as a local stack variable is the neatest way) - call one of its browseFor.. methods - if this returns true, the user has selected a file, so you can retrieve it with the getResult() method. e.g. @code void loadMooseFile() { FileChooser myChooser ("Please select the moose you want to load...", File::getSpecialLocation (File::userHomeDirectory), "*.moose"); if (myChooser.browseForFileToOpen()) { File mooseFile (myChooser.getResult()); loadMoose (mooseFile); } } @endcode */ class JUCE_API FileChooser { public: //============================================================================== /** Creates a FileChooser. After creating one of these, use one of the browseFor... methods to display it. @param dialogBoxTitle a text string to display in the dialog box to tell the user what's going on @param initialFileOrDirectory the file or directory that should be selected when the dialog box opens. If this parameter is set to File(), a sensible default directory will be used instead. @param filePatternsAllowed a set of file patterns to specify which files can be selected - each pattern should be separated by a comma or semi-colon, e.g. "*" or "*.jpg;*.gif". An empty string means that all files are allowed @param useOSNativeDialogBox if true, then a native dialog box will be used if possible; if false, then a Juce-based browser dialog box will always be used @param treatFilePackagesAsDirectories if true, then the file chooser will allow the selection of files inside packages when invoked on OS X and when using native dialog boxes. @see browseForFileToOpen, browseForFileToSave, browseForDirectory */ FileChooser (const String& dialogBoxTitle, const File& initialFileOrDirectory = File(), const String& filePatternsAllowed = String(), bool useOSNativeDialogBox = true, bool treatFilePackagesAsDirectories = false); /** Destructor. */ ~FileChooser(); //============================================================================== /** Shows a dialog box to choose a file to open. This will display the dialog box modally, using an "open file" mode, so that it won't allow non-existent files or directories to be chosen. @param previewComponent an optional component to display inside the dialog box to show special info about the files that the user is browsing. The component will not be deleted by this object, so the caller must take care of it. @returns true if the user selected a file, in which case, use the getResult() method to find out what it was. Returns false if they cancelled instead. @see browseForFileToSave, browseForDirectory */ bool browseForFileToOpen (FilePreviewComponent* previewComponent = nullptr); /** Same as browseForFileToOpen, but allows the user to select multiple files. The files that are returned can be obtained by calling getResults(). See browseForFileToOpen() for more info about the behaviour of this method. */ bool browseForMultipleFilesToOpen (FilePreviewComponent* previewComponent = nullptr); /** Shows a dialog box to choose a file to save. This will display the dialog box modally, using an "save file" mode, so it will allow non-existent files to be chosen, but not directories. @param warnAboutOverwritingExistingFiles if true, the dialog box will ask the user if they're sure they want to overwrite a file that already exists @returns true if the user chose a file and pressed 'ok', in which case, use the getResult() method to find out what the file was. Returns false if they cancelled instead. @see browseForFileToOpen, browseForDirectory */ bool browseForFileToSave (bool warnAboutOverwritingExistingFiles); /** Shows a dialog box to choose a directory. This will display the dialog box modally, using an "open directory" mode, so it will only allow directories to be returned, not files. @returns true if the user chose a directory and pressed 'ok', in which case, use the getResult() method to find out what they chose. Returns false if they cancelled instead. @see browseForFileToOpen, browseForFileToSave */ bool browseForDirectory(); /** Same as browseForFileToOpen, but allows the user to select multiple files and directories. The files that are returned can be obtained by calling getResults(). See browseForFileToOpen() for more info about the behaviour of this method. */ bool browseForMultipleFilesOrDirectories (FilePreviewComponent* previewComponent = nullptr); //============================================================================== /** Runs a dialog box for the given set of option flags. The flag values used are those in FileBrowserComponent::FileChooserFlags. @returns true if the user chose a directory and pressed 'ok', in which case, use the getResult() method to find out what they chose. Returns false if they cancelled instead. @see FileBrowserComponent::FileChooserFlags */ bool showDialog (int flags, FilePreviewComponent* previewComponent); //============================================================================== /** Returns the last file that was chosen by one of the browseFor methods. After calling the appropriate browseFor... method, this method lets you find out what file or directory they chose. Note that the file returned is only valid if the browse method returned true (i.e. if the user pressed 'ok' rather than cancelling). If you're using a multiple-file select, then use the getResults() method instead, to obtain the list of all files chosen. @see getResults */ File getResult() const; /** Returns a list of all the files that were chosen during the last call to a browse method. This array may be empty if no files were chosen, or can contain multiple entries if multiple files were chosen. @see getResult */ const Array& getResults() const noexcept { return results; } private: //============================================================================== String title, filters; const File startingFile; Array results; const bool useNativeDialogBox; const bool treatFilePackagesAsDirs; static void showPlatformDialog (Array& results, const String& title, const File& file, const String& filters, bool selectsDirectories, bool selectsFiles, bool isSave, bool warnAboutOverwritingExistingFiles, bool selectMultipleFiles, bool treatFilePackagesAsDirs, FilePreviewComponent* previewComponent); static bool isPlatformDialogAvailable(); JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FileChooser) };