[Summary] Implemented dialog for multi selection. Added ability to choose required file types.

[Reviewed on Windows] VKamyshniy

gtk2_ardour/open_file_dialog.mm

@@ -21,17 +21,18 @@
 #import <Cocoa/Cocoa.h>
 
 #include <string>
+#include <vector>
 
 #include <iostream>
 
 using namespace std;
 
 /* ====== "trampoline" functions to invoke Objective-C method ====== */
-string 
-ARDOUR::open_file_dialog (std::string initial_path, string title)
+std::string
+ARDOUR::open_file_dialog (std::string initial_path, std::string title)
 {
         NSString *nsTitle = [NSString stringWithUTF8String:title.c_str()];
-        
+    
         //NP: we should find some gentle way to do this
         NSString *nsDefaultPath = [NSString stringWithUTF8String:initial_path.c_str()];
         // Call the Objective-C method using Objective-C syntax
@@ -41,8 +42,38 @@ ARDOUR::open_file_dialog (std::string initial_path, string title)
         return stdPath;
 }
 
-string 
-ARDOUR::save_file_dialog (std::string initial_path, string title)
+std::vector<std::string>
+ARDOUR::open_file_dialog (std::vector<std::string> extantions, std::string initial_path, std::string title)
+{
+    NSString *nsTitle = [NSString stringWithUTF8String:title.c_str()];
+    //NP: we should find some gentle way to do this
+    NSString *nsDefaultPath = [NSString stringWithUTF8String:initial_path.c_str()];
+    
+    id fileTypesArray = [NSMutableArray new];
+    
+    for (auto str : extantions) {
+		id nsstr = [NSString stringWithUTF8String:str.c_str()];
+		[fileTypesArray addObject:nsstr];
+	}
+    
+    NSArray *nsPathes = [FileDialog class_open_file_dialog:nsTitle withArg2:nsDefaultPath withArg3:fileTypesArray];
+    
+    std::vector<std::string> stdPathes;
+    
+    int count = [nsPathes count];
+    for (int i=0; i<count; i++) {
+        NSURL *saveURL = [nsPathes objectAtIndex:i];
+        NSString *filePath = [saveURL path];
+        string stdPath = [filePath UTF8String];
+        stdPathes.push_back (stdPath);
+    }
+    
+    // Returns pathes to selected files
+    return stdPathes;
+}
+
+std::string
+ARDOUR::save_file_dialog (std::string initial_path, std::string title)
 {
         NSString *nsTitle = [NSString stringWithUTF8String:title.c_str()];
         
@@ -55,8 +86,8 @@ ARDOUR::save_file_dialog (std::string initial_path, string title)
         return stdPath;
 }
     
-string
-ARDOUR::choose_folder_dialog(std::string initial_path, string title)
+std::string
+ARDOUR::choose_folder_dialog(std::string initial_path, std::string title)
 {
         NSString *nsTitle = [NSString stringWithUTF8String:title.c_str()];
         
@@ -113,6 +144,39 @@ ARDOUR::choose_folder_dialog(std::string initial_path, string title)
     return @"";
 }
 
+/* On choose many files */
++ (NSArray*) class_open_file_dialog:(NSString *)title withArg2:(NSString *)initial_path withArg3:(NSArray*) fileTypesArray
+{
+    // Create a File Open Dialog class.
+    NSOpenPanel* openDlg = [NSOpenPanel openPanel];
+    
+    [openDlg setCanChooseFiles:YES];
+    [openDlg setAllowedFileTypes:fileTypesArray];
+    [openDlg setAllowsMultipleSelection:TRUE];
+    [openDlg setTitle:title];
+    
+    NSFileManager *fm = [[NSFileManager alloc] init];
+    BOOL isDir;
+    BOOL exists = [fm fileExistsAtPath:initial_path isDirectory:&isDir];
+    
+    if(!exists)
+        initial_path = NSHomeDirectory();
+    
+    [openDlg setDirectoryURL : [NSURL fileURLWithPath:initial_path]];
+    
+    // Display the dialog box.  If the OK pressed,
+    // process the files.
+    if ( [openDlg runModal] == NSOKButton )
+    {
+        // Gets first selected file
+        NSArray *files = [openDlg URLs];
+        
+        return files;
+    }
+    
+    return nil;
+}
+
 /* On create new session */
 + (NSString*) class_save_file_dialog:(NSString *)title withArg2:(NSString *)initial_path
 {    

gtk2_ardour/open_file_dialog_proxy.h

@@ -27,6 +27,7 @@ namespace ARDOUR
 {
         std::string save_file_dialog (std::string initial_path = "", std::string title = _("Save"));
         std::string open_file_dialog (std::string initial_path = "", std::string title = _("Open"));
+        std::vector<std::string> open_file_dialog (std::vector<std::string> extantions, std::string initial_path = "", std::string title = _("Open"));
         std::string choose_folder_dialog (std::string initial_path = "", std::string title = _("Choose Folder"));
 }
 

gtk2_ardour/open_file_dialog_windows.cc

@@ -25,11 +25,13 @@
 
 #include <glibmm/miscutils.h>
 
+#include <boost/algorithm/string.hpp>
+
 #include "open_file_dialog_proxy.h"
 
 using namespace std;
 
-string
+std::string
 ARDOUR::save_file_dialog (std::string initial_path, std::string title)
 {
 	TCHAR szFilePathName[_MAX_PATH] = "";
@@ -62,7 +64,7 @@ ARDOUR::save_file_dialog (std::string initial_path, std::string title)
 	return string();
 }
 
-string
+std::string
 ARDOUR::open_file_dialog (std::string initial_path, std::string title)
 {
 	TCHAR szFilePathName[_MAX_PATH] = "";
@@ -94,7 +96,74 @@ ARDOUR::open_file_dialog (std::string initial_path, std::string title)
 	return string ();
 }
 
-string 
+std::vector<std::string>
+ARDOUR::open_file_dialog (std::vector<std::string> extentions, std::string initial_path, std::string title)
+{
+	TCHAR szFilePathName[_MAX_PATH] = "";
+	OPENFILENAME ofn = {0};
+	ofn.lStructSize = sizeof(OPENFILENAME);
+	ofn.lpstrFile = szFilePathName;  // This will hold the file name
+	ofn.nMaxFile = _MAX_PATH;
+	ofn.lpstrTitle = title.c_str();
+	ofn.Flags = OFN_PATHMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER;
+
+	// Create filter for required file types
+	std::string filter;
+	for (int i = 0; i < extentions.size(); ++i) {
+		filter += "*."+extentions[i]+";";
+	}
+
+	char c_filter[2+filter.size()+2];
+	c_filter[0] = ' ';
+	c_filter[1] = '\0';
+	strcpy (c_filter+2, filter.c_str ());
+	c_filter[filter.size()+3] = '\0';
+	
+	ofn.lpstrFilter = c_filter;
+		
+	// Check on valid path
+	WIN32_FIND_DATA FindFileData;
+	HANDLE handle = FindFirstFile(initial_path.c_str(), &FindFileData) ;
+        int found = (handle != INVALID_HANDLE_VALUE);
+        
+	// if path is valid
+	if (found) {
+		ofn.lpstrInitialDir = initial_path.c_str();
+        } else {
+		initial_path = Glib::get_home_dir();
+		ofn.lpstrInitialDir = initial_path.c_str();
+	}
+
+	std::vector<std::string> file_pathes;
+        
+	if (GetOpenFileName(&ofn)) {
+
+		std::string directory_path = ofn.lpstrFile;
+		std::string path;
+		char* ptr = ofn.lpstrFile;
+
+		bool many_files = (ofn.lpstrFile [strlen (ofn.lpstrFile) + 1] != 0);
+
+		if (ofn.lpstrFile [strlen (ofn.lpstrFile) + 1] != 0) { // Many files
+			for (char *current_name = ofn.lpstrFile + strlen (ofn.lpstrFile) + 1;
+				 *current_name;
+				 current_name += strlen (current_name) + 1) {
+					 file_pathes.push_back (ofn.lpstrFile);
+					 std::string& current_file_path = file_pathes.back (); 
+					 current_file_path += "\\";
+					 current_file_path += current_name;
+			}
+		} else {
+			file_pathes.push_back (ofn.lpstrFile); // single file selected
+		}
+
+		return file_pathes;
+	}
+
+	return file_pathes;
+}
+
+std::string 
 ARDOUR::choose_folder_dialog (std::string /* initial_path */, std::string title)
 {
 	BROWSEINFO bi;