/*
  ==============================================================================

   This file is part of the JUCE framework.
   Copyright (c) Raw Material Software Limited

   JUCE is an open source framework subject to commercial or open source
   licensing.

   By downloading, installing, or using the JUCE framework, or combining the
   JUCE framework with any other source code, object code, content or any other
   copyrightable work, you agree to the terms of the JUCE End User Licence
   Agreement, and all incorporated terms including the JUCE Privacy Policy and
   the JUCE Website Terms of Service, as applicable, which will bind you. If you
   do not agree to the terms of these agreements, we will not license the JUCE
   framework to you, and you must discontinue the installation or download
   process and cease use of the JUCE framework.

   JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
   JUCE Privacy Policy: https://juce.com/juce-privacy-policy
   JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/

   Or:

   You may also use this code under the terms of the AGPLv3:
   https://www.gnu.org/licenses/agpl-3.0.en.html

   THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
   WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

//==============================================================================
/**
    A component that displays the files in a directory as a treeview.

    This implements the DirectoryContentsDisplayComponent base class so that
    it can be used in a FileBrowserComponent.

    To attach a listener to it, use its DirectoryContentsDisplayComponent base
    class and the FileBrowserListener class.

    @see DirectoryContentsList, FileListComponent

    @tags{GUI}
*/
class JUCE_API  FileTreeComponent  : public TreeView,
                                     public DirectoryContentsDisplayComponent
{
public:
    //==============================================================================
    /** Creates a FileTreeComponent to show the contents of a specified directory.
    */
    FileTreeComponent (DirectoryContentsList& listToShow);

    /** Destructor. */
    ~FileTreeComponent() override;

    //==============================================================================
    /** Returns the number of files the user has got selected.
        @see getSelectedFile
    */
    int getNumSelectedFiles() const override               { return TreeView::getNumSelectedItems(); }

    /** Returns one of the files that the user has currently selected.
        The index should be in the range 0 to (getNumSelectedFiles() - 1).
        @see getNumSelectedFiles
    */
    File getSelectedFile (int index = 0) const override;

    /** Deselects any files that are currently selected. */
    void deselectAllFiles() override;

    /** Scrolls the list to the top. */
    void scrollToTop() override;

    /** If the specified file is in the list, it will become the only selected item
        (and if the file isn't in the list, all other items will be deselected). */
    void setSelectedFile (const File&) override;

    /** Updates the files in the list. */
    void refresh();

    /** Setting a name for this allows tree items to be dragged.

        The string that you pass in here will be returned by the getDragSourceDescription()
        of the items in the tree. For more info, see TreeViewItem::getDragSourceDescription().
    */
    void setDragAndDropDescription (const String& description);

    /** Returns the last value that was set by setDragAndDropDescription().
    */
    const String& getDragAndDropDescription() const noexcept    { return dragAndDropDescription; }

    /** Changes the height of the treeview items. */
    void setItemHeight (int newHeight);

    /** Returns the height of the treeview items. */
    int getItemHeight() const noexcept                          { return itemHeight; }

private:
    //==============================================================================
    String dragAndDropDescription;
    int itemHeight;

    class Controller;
    std::unique_ptr<Controller> controller;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (FileTreeComponent)
};

} // namespace juce