amuse/VST/FileOpenDialog.cpp

#include "FileOpenDialog.hpp"

#define WIN32_LEAN_AND_MEAN
#include <windows.h> // For common windows data types and function headers
#define STRICT_TYPED_ITEMIDS
#include <objbase.h>  // For COM headers
#include <shobjidl.h> // for IFileDialogEvents and IFileDialogControlEvents
#include <shlwapi.h>
#include <knownfolders.h> // for KnownFolder APIs/datatypes/function headers
#include <propvarutil.h>  // for PROPVAR-related functions
#include <propkey.h>      // for the Property key APIs/datatypes
#include <propidl.h>      // for the Property System APIs
#include <strsafe.h>      // for StringCchPrintfW
#include <shtypes.h>      // for COMDLG_FILTERSPEC
#include <new>

// Controls
#define CONTROL_GROUP 2000
#define CONTROL_RADIOBUTTONLIST 2
#define CONTROL_RADIOBUTTON1 1
#define CONTROL_RADIOBUTTON2 2 // It is OK for this to have the same IDas     CONTROL_RADIOBUTTONLIST,
                               // because it is a child control under CONTROL_RADIOBUTTONLIST

// IDs for the Task Dialog Buttons
#define IDC_BASICFILEOPEN 100
#define IDC_ADDITEMSTOCUSTOMPLACES 101
#define IDC_ADDCUSTOMCONTROLS 102
#define IDC_SETDEFAULTVALUESFORPROPERTIES 103
#define IDC_WRITEPROPERTIESUSINGHANDLERS 104
#define IDC_WRITEPROPERTIESWITHOUTUSINGHANDLERS 105

HWND ghMainWnd = 0;
HINSTANCE ghAppInst = 0;
RECT winRect;

class CDialogEventHandler : public IFileDialogEvents, public IFileDialogControlEvents
{
public:
    // IUnknown methods
    IFACEMETHODIMP QueryInterface(REFIID riid, void** ppv)
    {
        static const QITAB qit[] = {
            QITABENT(CDialogEventHandler, IFileDialogEvents),
            QITABENT(CDialogEventHandler, IFileDialogControlEvents),
            {0},
        };
        return QISearch(this, qit, riid, ppv);
    }

    IFACEMETHODIMP_(ULONG) AddRef() { return InterlockedIncrement(&_cRef); }

    IFACEMETHODIMP_(ULONG) Release()
    {
        long cRef = InterlockedDecrement(&_cRef);
        if (!cRef)
            delete this;
        return cRef;
    }

    // IFileDialogEvents methods
    IFACEMETHODIMP OnFileOk(IFileDialog*) { return S_OK; };
    IFACEMETHODIMP OnFolderChange(IFileDialog*) { return S_OK; };
    IFACEMETHODIMP OnFolderChanging(IFileDialog*, IShellItem*) { return S_OK; };
    IFACEMETHODIMP OnHelp(IFileDialog*) { return S_OK; };
    IFACEMETHODIMP OnSelectionChange(IFileDialog*) { return S_OK; };
    IFACEMETHODIMP OnShareViolation(IFileDialog*, IShellItem*, FDE_SHAREVIOLATION_RESPONSE*) { return S_OK; };
    IFACEMETHODIMP OnTypeChange(IFileDialog* pfd);
    IFACEMETHODIMP OnOverwrite(IFileDialog*, IShellItem*, FDE_OVERWRITE_RESPONSE*) { return S_OK; };

    // IFileDialogControlEvents methods
    IFACEMETHODIMP OnItemSelected(IFileDialogCustomize* pfdc, DWORD dwIDCtl, DWORD dwIDItem);
    IFACEMETHODIMP OnButtonClicked(IFileDialogCustomize*, DWORD) { return S_OK; };
    IFACEMETHODIMP OnCheckButtonToggled(IFileDialogCustomize*, DWORD, BOOL) { return S_OK; };
    IFACEMETHODIMP OnControlActivating(IFileDialogCustomize*, DWORD) { return S_OK; };

    CDialogEventHandler() : _cRef(1){};

private:
    ~CDialogEventHandler(){};
    long _cRef;
};

HRESULT CDialogEventHandler_CreateInstance(REFIID riid, void** ppv);

std::wstring openDB()
{
    std::wstring ret;
    CoInitializeEx(NULL, COINIT_MULTITHREADED | COINIT_DISABLE_OLE1DDE);

    // Cocreate the file open dialog object
    IFileDialog* pfd = NULL;

    HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog, NULL, CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&pfd));

    if (SUCCEEDED(hr))
    {
        // Stuff needed for later
        const COMDLG_FILTERSPEC rgFExt[] = {{L"Audio Group Archive (*.*)", L"*.*"}};

        // Create event handling
        IFileDialogEvents* pfde = NULL;
        hr = CDialogEventHandler_CreateInstance(IID_PPV_ARGS(&pfde));

        if (SUCCEEDED(hr))
        {
            // Hook the event handler
            DWORD dwCookie;

            hr = pfd->Advise(pfde, &dwCookie);

            if (SUCCEEDED(hr))
            {
                // Set options for the dialog
                DWORD dwFlags;

                // Get options first so we do not override
                hr = pfd->GetOptions(&dwFlags);

                if (SUCCEEDED(hr))
                {
                    // Get shell items only
                    hr = pfd->SetOptions(dwFlags | FOS_FORCEFILESYSTEM);

                    if (SUCCEEDED(hr))
                    {
                        // Types of files to display (not default)
                        hr = pfd->SetFileTypes(ARRAYSIZE(rgFExt), rgFExt);

                        if (SUCCEEDED(hr))
                        {
                            // Set default file type to display
                            // hr = pfd->SetDefaultExtension(L"sqlite");

                            // if (SUCCEEDED(hr))
                            //{
                            // Show dialog
                            hr = pfd->Show(NULL);

                            if (SUCCEEDED(hr))
                            {
                                // Get the result once the user clicks on open
                                IShellItem* result;

                                hr = pfd->GetResult(&result);

                                if (SUCCEEDED(hr))
                                {
                                    // Print out the file name
                                    PWSTR fName = NULL;

                                    hr = result->GetDisplayName(SIGDN_FILESYSPATH, &fName);

                                    if (SUCCEEDED(hr))
                                    {
                                        ret.assign(fName);
                                        CoTaskMemFree(fName);
                                    }

                                    result->Release();
                                }
                            }
                            //}
                        }
                    }
                }
            }

            pfd->Unadvise(dwCookie);
        }

        pfde->Release();
    }

    pfd->Release();
    return ret;
}

HRESULT CDialogEventHandler_CreateInstance(REFIID riid, void** ppv)
{
    *ppv = NULL;
    CDialogEventHandler* pDialogEventHandler = new (std::nothrow) CDialogEventHandler();
    HRESULT hr = pDialogEventHandler ? S_OK : E_OUTOFMEMORY;
    if (SUCCEEDED(hr))
    {
        hr = pDialogEventHandler->QueryInterface(riid, ppv);
        pDialogEventHandler->Release();
    }
    return hr;
}

HRESULT CDialogEventHandler::OnTypeChange(IFileDialog* pfd)
{
    IFileSaveDialog* pfsd;
    HRESULT hr = pfd->QueryInterface(&pfsd);
    if (SUCCEEDED(hr))
    {
        UINT uIndex;
        hr = pfsd->GetFileTypeIndex(&uIndex); // index of current file-type
        if (SUCCEEDED(hr))
        {
            IPropertyDescriptionList* pdl = NULL;
        }
        pfsd->Release();
    }
    return hr;
}

// IFileDialogControlEvents
// This method gets called when an dialog control item selection happens (radio-button selection. etc).
// For sample sake, let's react to this event by changing the dialog title.
HRESULT CDialogEventHandler::OnItemSelected(IFileDialogCustomize* pfdc, DWORD dwIDCtl, DWORD dwIDItem)
{
    IFileDialog* pfd = NULL;
    HRESULT hr = pfdc->QueryInterface(&pfd);
    if (SUCCEEDED(hr))
    {
        if (dwIDCtl == CONTROL_RADIOBUTTONLIST)
        {
            switch (dwIDItem)
            {
            case CONTROL_RADIOBUTTON1:
                hr = pfd->SetTitle(L"Longhorn Dialog");
                break;

            case CONTROL_RADIOBUTTON2:
                hr = pfd->SetTitle(L"Vista Dialog");
                break;
            }
        }
        pfd->Release();
    }
    return hr;
}