Merge pull request #677 from niteskum/graphicsFileExternalApplication

Shell Api to get default Application for a file type.
API is added to get Default Application for a file type.
Api Name: getSystemDefaultApp
This takes input as comma separated file extensions string and return comma separated OS Default Application for each extensions if any.

Author: narayani28

appshell/appshell_extensions.cpp

@@ -432,6 +432,23 @@ class ProcessMessageDelegate : public ClientHandler::ProcessMessageDelegate {
                 responseArgs->SetInt(2, port);
             }
 
+        } else if (message_name == "getSystemDefaultApp") {
+            // Parameters:
+            //  0: int32 - callback id
+            //  1: string - list of file extensions
+            if (argList->GetSize() != 2 ||
+                argList->GetType(1) != VTYPE_STRING) {
+                error = ERR_INVALID_PARAMS;
+            }
+
+            ExtensionString defaultApp;
+            if (error == NO_ERROR) {
+                error = getSystemDefaultApp(argList->GetString(1), defaultApp);
+            }
+
+            // Set response args for this function
+            responseArgs->SetString(2, defaultApp);
+
         } else if (message_name == "QuitApplication") {
             // Parameters - none
 

appshell/appshell_extensions.js

@@ -375,6 +375,26 @@ if (!brackets) {
         }, path);
     };
 
+    /**
+     * Checks If fileytype has assigned system default app
+     *
+     * @param {string} filetypes list of file Types for which deafult app to checked.
+     * @param {function(err)} callback Asynchronous callback function. The callback gets two arguments 
+     *        (filetypes, err)
+     *        filetypes which has system default app assigned.
+     *
+     *        Possible error values:
+     *          NO_ERROR
+     *          ERR_INVALID_PARAMS
+     *          ERR_NOT_FOUND
+     *
+     * @return None. This is an asynchronous call that sends all return information to the callback.
+     */
+    native function getSystemDefaultApp();
+        appshell.app.getSystemDefaultApp = function (filetypes, callback) {
+            getSystemDefaultApp(callback || _dummyCallback, filetypes);
+    };
+
     /**
      * Quits native shell application
      */

appshell/appshell_extensions_gtk.cpp

@@ -210,6 +210,11 @@ int32 OpenURLInDefaultBrowser(ExtensionString url)
     return NO_ERROR;
 }
 
+int32 getSystemDefaultApp(const ExtensionString& fileTypes, ExtensionString& fileTypesWithdefaultApp)
+{
+	return NO_ERROR;
+}
+
 int32 IsNetworkDrive(ExtensionString path, bool& isRemote)
 {
     return NO_ERROR;

appshell/appshell_extensions_mac.mm

@@ -391,6 +391,62 @@ void CloseLiveBrowser(CefRefPtr<CefBrowser> browser, CefRefPtr<CefProcessMessage
                                          );
 }
 
+int32 getSystemDefaultApp(const ExtensionString& fileTypes, ExtensionString& fileTypesWithdefaultApp)
+{
+
+    char delim[] = ",";
+    char separator[] = "##";
+    std::vector<ExtensionString> extArray;
+    char* token = std::strtok((char*)fileTypes.c_str(), delim);
+    while (token) {
+        extArray.push_back(token);
+        token = std::strtok(NULL, delim);
+    }
+
+    for (std::vector<ExtensionString>::const_iterator it = extArray.begin(); it != extArray.end(); ++it)
+    {
+        ExtensionString appPath;
+
+        CFStringRef contentType = CFStringCreateWithCString (NULL, (*it).c_str(), kCFStringEncodingUTF8);
+
+        if(!contentType)
+            continue;
+
+        CFStringRef UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension,
+                                                                           contentType,
+                                                                           NULL);
+        if(UTI)
+        {
+            CFURLRef bundle_id;
+
+            bundle_id = LSCopyDefaultApplicationURLForContentType(UTI, kLSRolesEditor, NULL);
+
+            if(bundle_id)
+            {
+                NSBundle *bundle = [NSBundle bundleWithURL: (NSURL*)bundle_id];
+
+                if (bundle)
+                {
+                    appPath = [(NSString *)[bundle objectForInfoDictionaryKey: @"CFBundleExecutable"] cStringUsingEncoding:NSUTF8StringEncoding];
+                }
+
+                fileTypesWithdefaultApp = fileTypesWithdefaultApp + *it + separator + appPath + ",";
+
+                CFRelease(bundle_id);
+            }
+
+            CFRelease(UTI);
+        }
+
+        CFRelease(contentType);
+    }
+
+    return NO_ERROR;
+}
+
+
+
+
 int32 OpenURLInDefaultBrowser(ExtensionString url)
 {
     NSString* urlString = [NSString stringWithUTF8String:url.c_str()];

appshell/appshell_extensions_platform.h

@@ -192,6 +192,8 @@ void MoveFileOrDirectoryToTrash(ExtensionString filename, CefRefPtr<CefBrowser>
 
 int32 CopyFile(ExtensionString src, ExtensionString dest);
 
+int32 getSystemDefaultApp(const ExtensionString& fileTypes, ExtensionString& fileTypesWithdefaultApp);
+
 int32 GetNodeState(int32& state);
 
 void OnBeforeShutdown();

appshell/appshell_extensions_win.cpp

@@ -403,6 +403,175 @@ void CloseLiveBrowser(CefRefPtr<CefBrowser> browser, CefRefPtr<CefProcessMessage
     }
 }
 
+
+static BOOL ResolveAppPathCommon(const ExtensionString& lpszKey, const ExtensionString& lpszVal, ExtensionString& appPath)
+{
+    HKEY	keyRoot = NULL;
+    BOOL	result = FALSE;
+    ULONG	regKey(REG_SZ);
+
+    if (::RegOpenKeyEx(HKEY_CLASSES_ROOT, lpszKey.c_str(), 0, KEY_QUERY_VALUE, &keyRoot) == ERROR_SUCCESS)
+    {
+        TCHAR editorPath[255];
+        ULONG fTypeSize = 255;
+
+        if (::RegQueryValueEx(keyRoot, lpszVal.c_str(), NULL, &regKey, (LPBYTE)editorPath, &fTypeSize) == ERROR_SUCCESS)
+        {
+            if (editorPath != L"")
+            {
+                appPath = editorPath;
+                //appPath = appPath.substr(appPath.find_last_of(L"/\\") + 1);
+                int iExe = appPath.find(L".exe");
+                if (iExe == -1)
+                    iExe = appPath.find(L".EXE");
+                if (iExe != -1)
+                    appPath = appPath.substr(0, iExe+4);
+
+                if (appPath[0] == '\"')
+                    appPath = appPath.substr(1);
+
+                result = TRUE;
+            }
+
+
+        }
+        ::RegCloseKey(keyRoot);
+    }
+
+    return result;
+
+}
+
+static BOOL ResolveAppPathFromProgID(const ExtensionString& lpszProgID, ExtensionString& appPath)
+{
+
+    ExtensionString key = lpszProgID + L"\\shell\\open\\command";
+
+
+    if (!ResolveAppPathCommon(key, L"", appPath))
+    {
+        key = lpszProgID + L"\\Application";
+        if (ResolveAppPathCommon(key, L"AppUserModelID", appPath)) {
+            appPath = appPath.substr(0, appPath.find(L"_"));
+            return true;
+        }
+        return false;
+    }
+    return true;
+
+}
+
+BOOL GetShellDefaultOpenWithProgPath(const ExtensionString& fileExt, ExtensionString &appPath)
+{
+    HKEY	extKey = NULL;
+    ExtensionString key = fileExt;
+    BOOL	result = FALSE;
+    ULONG	regKey(REG_SZ);
+
+    if (fileExt.empty())
+        return false;
+
+    if (fileExt[0] != '.')
+        key = L"." + fileExt;
+
+    key = L"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\" + key + L"\\UserChoice";
+
+    if (::RegOpenKeyEx(HKEY_CURRENT_USER, key.c_str(), 0, KEY_QUERY_VALUE, &extKey) == ERROR_SUCCESS)
+    {
+        TCHAR editorPath[255];
+        ULONG fTypeSize = 255;
+
+        if (::RegQueryValueEx(extKey, L"Progid", NULL, &regKey, (LPBYTE)editorPath, &fTypeSize) == ERROR_SUCCESS)
+        {
+            result = ResolveAppPathFromProgID(editorPath, appPath);
+
+        }
+
+        ::RegCloseKey(extKey);
+    }
+
+    return result;
+}
+
+
+BOOL GetLegacyWin32SystemEditor(const ExtensionString& fileExt, ExtensionString &appPath)
+{
+    HKEY	rootKey;
+    ULONG	regKey(REG_SZ);
+    ExtensionString key = fileExt;
+
+    if (fileExt.empty())
+        return false;
+
+    if (fileExt[0] != '.')
+        key = L"." + key;
+
+    // find the key for the file extension
+    if (RegOpenKeyEx(HKEY_CLASSES_ROOT, key.c_str(), 0, KEY_QUERY_VALUE, &rootKey) == ERROR_SUCCESS)
+    {
+        TCHAR nextKeyStr[255];
+        ULONG strSize = 255;
+        // get the value of the key
+        if (RegQueryValueEx(rootKey, L"", NULL, &regKey,
+            (LPBYTE)nextKeyStr, &strSize) == ERROR_SUCCESS)
+        {
+            RegCloseKey(rootKey);
+            return ResolveAppPathFromProgID(nextKeyStr, appPath);
+        }
+        RegCloseKey(rootKey);
+    }
+
+    key = key + L"\\OpenWithProgids";
+    HKEY extKey;
+    // find the key for the file extension
+    if (RegOpenKeyEx(HKEY_CLASSES_ROOT, key.c_str(), 0, KEY_QUERY_VALUE | KEY_READ, &extKey) == ERROR_SUCCESS)
+    {
+        TCHAR subKeyStr[255];
+        ULONG subKeySize = 255;
+        DWORD index = 0;
+        LONG err = RegEnumValue(extKey, index, subKeyStr, &subKeySize,
+            0, 0, 0, NULL);
+        if (err != ERROR_NO_MORE_ITEMS)
+        {
+            RegCloseKey(extKey);
+            return ResolveAppPathFromProgID(subKeyStr, appPath);
+        }
+
+        RegCloseKey(extKey);
+    }
+
+    return FALSE;
+}
+
+int32 getSystemDefaultApp(const ExtensionString& fileTypes, ExtensionString& fileTypesWithdefaultApp)
+{
+    wchar_t* nextPtr;
+    wchar_t delim[] = L",";
+    std::vector<ExtensionString> extArray;
+    ExtensionString separator = L"##";
+
+    wchar_t* token = std::wcstok((wchar_t*)fileTypes.c_str(), delim, &nextPtr);
+ 
+    while (token) {
+        extArray.push_back(token);
+        token = wcstok(NULL, delim, &nextPtr);
+    }
+
+    for (std::vector<ExtensionString>::const_iterator it = extArray.begin(); it != extArray.end(); ++it) {
+        ExtensionString appPath;
+        BOOL result = GetShellDefaultOpenWithProgPath(*it, appPath);
+
+        if (!result)
+            result = GetLegacyWin32SystemEditor(*it, appPath);
+
+        if (result)
+            fileTypesWithdefaultApp = fileTypesWithdefaultApp + *it + separator + appPath + L",";
+    }
+
+    return NO_ERROR;
+
+}
+
 int32 OpenURLInDefaultBrowser(ExtensionString url)
 {
     DWORD result = (DWORD)ShellExecute(NULL, L"open", url.c_str(), NULL, NULL, SW_SHOWNORMAL);