From 088d32e712a2c6e51a04f919c0ade96b643a49e3 Mon Sep 17 00:00:00 2001
From: xiphon <xiphon@protonmail.com>
Date: Thu, 12 Dec 2019 01:21:49 +0000
Subject: [PATCH] OSHelper: file preselection support (Windows and Mac)

Co-authored-by: selsta <selsta@sent.at>
---
 src/main/oshelper.cpp | 54 ++++++++++++++++++++++++++++++++++++-------
 src/qt/macoshelper.h  |  1 +
 src/qt/macoshelper.mm |  8 +++++++
 3 files changed, 55 insertions(+), 8 deletions(-)

diff --git a/src/main/oshelper.cpp b/src/main/oshelper.cpp
index 313fd233..4402db6d 100644
--- a/src/main/oshelper.cpp
+++ b/src/main/oshelper.cpp
@@ -37,7 +37,8 @@
 #ifdef Q_OS_MAC
 #include "qt/macoshelper.h"
 #endif
-#ifdef Q_OS_WIN32
+#ifdef Q_OS_WIN
+#include <Shlobj.h>
 #include <windows.h>
 #endif
 #if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
@@ -49,6 +50,33 @@
 // #undef those Xlib #defines that conflict with QEvent::Type enum
 #endif
 
+#if defined(Q_OS_WIN)
+bool openFolderAndSelectItem(const QString &filePath)
+{
+    struct scope {
+        ~scope() { ::CoTaskMemFree(pidl); }
+        PIDLIST_ABSOLUTE pidl = nullptr;
+    } scope;
+
+    SFGAOF flags;
+    HRESULT result = ::SHParseDisplayName(filePath.toStdWString().c_str(), nullptr, &scope.pidl, 0, &flags);
+    if (result != S_OK)
+    {
+        qWarning() << "SHParseDisplayName failed" << result << "file path" << filePath;
+        return false;
+    }
+
+    result = ::SHOpenFolderAndSelectItems(scope.pidl, 0, nullptr, 0);
+    if (result != S_OK)
+    {
+        qWarning() << "SHOpenFolderAndSelectItems failed" << result << "file path" << filePath;
+        return false;
+    }
+
+    return true;
+}
+#endif
+
 OSHelper::OSHelper(QObject *parent) : QObject(parent)
 {
 
@@ -56,15 +84,25 @@ OSHelper::OSHelper(QObject *parent) : QObject(parent)
 
 bool OSHelper::openContainingFolder(const QString &filePath) const
 {
-    QUrl prepared;
-    prepared.setScheme("file");
-    prepared.setPath(QFileInfo(filePath).absolutePath());
-    if (!prepared.isValid())
+#if defined(Q_OS_WIN)
+    if (openFolderAndSelectItem(QDir::toNativeSeparators(filePath)))
     {
-        qWarning() << "malformed file path" << filePath << prepared.errorString();
+        return true;
+    }
+#elif defined(Q_OS_MAC)
+    if (MacOSHelper::openFolderAndSelectItem(QUrl::fromLocalFile(filePath)))
+    {
+        return true;
+    }
+#endif
+
+    QUrl url = QUrl::fromLocalFile(QFileInfo(filePath).absolutePath());
+    if (!url.isValid())
+    {
+        qWarning() << "Malformed file path" << filePath << url.errorString();
         return false;
     }
-    return QDesktopServices::openUrl(prepared);
+    return QDesktopServices::openUrl(url);
 }
 
 QString OSHelper::temporaryFilename() const
@@ -92,7 +130,7 @@ bool OSHelper::removeTemporaryWallet(const QString &fileName) const
 bool OSHelper::isCapsLock() const
 {
     // platform dependent method of determining if CAPS LOCK is on
-#if defined(Q_OS_WIN32) // MS Windows version
+#if defined(Q_OS_WIN) // MS Windows version
     return GetKeyState(VK_CAPITAL) == 1;
 #elif defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID) // X11 version
     Display * d = XOpenDisplay((char*)0);
diff --git a/src/qt/macoshelper.h b/src/qt/macoshelper.h
index bddf70c6..a6caa79b 100644
--- a/src/qt/macoshelper.h
+++ b/src/qt/macoshelper.h
@@ -35,6 +35,7 @@ class MacOSHelper
 
 public:
     static bool isCapsLock();
+    static bool openFolderAndSelectItem(const QUrl &path);
 };
 
 #endif //MACOSHELPER_H
diff --git a/src/qt/macoshelper.mm b/src/qt/macoshelper.mm
index 0b29f25f..a7fb061d 100644
--- a/src/qt/macoshelper.mm
+++ b/src/qt/macoshelper.mm
@@ -47,3 +47,11 @@ bool MacOSHelper::isCapsLock()
     return (flags & NSAlphaShiftKeyMask);
 #endif
 }
+
+bool MacOSHelper::openFolderAndSelectItem(const QUrl &path)
+{
+    NSURL *nspath = path.toNSURL();
+    NSArray *fileURLs = [NSArray arrayWithObjects:nspath, nil];
+    [[NSWorkspace sharedWorkspace] activateFileViewerSelectingURLs:fileURLs];
+    return true;
+}