Added an edge-case helper for choosing files/directories in linux. This finishes the requirement for issue #50 on linux, but will test changes on macOS before marking the issue resolved.

app/js/app.js

@@ -2497,6 +2497,7 @@ const filmout 	= require('./lib/ui/filmout.js');
 const mse 		= require('./lib/ui/mscript.js');
 const Mscript 	= require('./lib/mscript');
 const { delay }	= require('./lib/delay');
+
 let log;
 
 /******

app/lib/filmout/index.js

@@ -27,6 +27,7 @@ class FilmOut {
         this.id = 'filmout';
         this.videoExtensions = ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4'];
         this.stillExtensions = ['.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
+        this.sequenceExtensions = ['.png', '.jpg', '.jpeg'];
         this.gifExtension = '.gif';
         this.state = {
             frame: 0,
@@ -346,7 +347,7 @@ class FilmOut {
         }
         frameList = frameList.filter((fileName) => {
             let ext = path_1.extname(fileName);
-            if (this.stillExtensions.indexOf(ext) !== -1) {
+            if (this.sequenceExtensions.indexOf(ext) !== -1) {
                 return true;
             }
             return false;

app/lib/ui/filmout.js

@@ -49,6 +49,7 @@ class FilmOut {
         this.videoExtensions = ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4',
             '.gif'];
         this.stillExtensions = ['.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
+        this.sequenceExtensions = ['.png', '.jpg', '.jpeg'];
         this.displays = [];
         this.state = {
             frame: 0,
@@ -127,9 +128,10 @@ class FilmOut {
     selectFile() {
         return __awaiter(this, void 0, void 0, function* () {
             const elem = $('#digital');
+            const properties = [`openFile`, `openDirectory`];
             const options = {
                 title: `Select video or image sequence`,
-                properties: [`openFile`, `openDirectory`],
+                properties,
                 defaultPath: 'c:/',
                 filters: [
                     {
@@ -143,6 +145,22 @@ class FilmOut {
             let pathStr;
             let displayName;
             let ext;
+            const linuxMessage = `Do you want to use a single file (video or still image) or a folder containing an image sequence?`;
+            const linuxChoices = ['File', 'Folder', 'Cancel'];
+            let linuxChoice = 0;
+            if (process.platform === 'linux') {
+                linuxChoice = yield gui.choice(linuxMessage, linuxChoices);
+                console.log(linuxChoice);
+                if (linuxChoice === 0) {
+                    options.properties = ['openFile'];
+                }
+                else if (linuxChoice === 1) {
+                    options.properties = ['openDirectory'];
+                }
+                else {
+                    return false;
+                }
+            }
             try {
                 files = yield dialog.showOpenDialog(options);
             }
@@ -190,7 +208,7 @@ class FilmOut {
                 fileList = fs.readdirSync(pathStr);
                 fileList = fileList.filter((file) => {
                     let ext = path.extname(file).toLowerCase();
-                    if (this.stillExtensions.indexOf(ext)) {
+                    if (this.sequenceExtensions.indexOf(ext)) {
                         return true;
                     }
                     return false;
@@ -221,7 +239,7 @@ class FilmOut {
                 fileName
             };
             if (filePath && filePath !== '') {
-                proceed = yield gui.confirm(`Are you sure you want to use ${fileName}?`);
+                proceed = yield gui.confirm(`Are you sure you want to use ${fileName}?`, 'No');
             }
             else {
                 this.selectFile();
@@ -296,7 +314,7 @@ class FilmOut {
         return __awaiter(this, void 0, void 0, function* () {
             let proceed = false;
             if (this.state.path && this.state.path !== '') {
-                proceed = yield gui.confirm(`Export all frames of ${this.state.name}? This may take a while, but will allow filmout sequences to run faster.`);
+                proceed = yield gui.confirm(`Export all frames of ${this.state.name}? This may take a while, but will allow filmout sequences to run faster.`, 'No');
             }
             if (proceed) {
                 gui.overlay(true);

app/lib/ui/index.js

@@ -227,14 +227,23 @@ gui.info = async function (title, message) {
 	};
 	return dialog.showMessageBox(config);
 };
-gui.confirm = async function (message) {
+gui.confirm = async function (message, cancel = 'Cancel') {
 	const config = {
-		buttons : ['Yes', 'Cancel'],
+		buttons : ['Yes', cancel],
 		message
 	}
 	const res = await dialog.showMessageBox(config);
 	return res.response === 0;
 };
+gui.choice = async function (message, choices) {
+	const config = {
+		buttons : choices,
+		defaultId : 0,
+		message
+	}
+	const res = await dialog.showMessageBox(config);
+	return res.response;
+};
 gui.warn = async function (title, message) {
 	'use strict';
 	const config = {

app/src/index.js

@@ -23,6 +23,7 @@ const filmout 	= require('./lib/ui/filmout.js');
 const mse 		= require('./lib/ui/mscript.js');
 const Mscript 	= require('./lib/mscript');
 const { delay }	= require('./lib/delay');
+
 let log;
 
 /******

app/src/lib/ui/filmout.ts

@@ -47,6 +47,7 @@ class FilmOut {
 	private videoExtensions : string[] =  ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4', 
 									  '.gif'];
 	private stillExtensions : string[] = ['.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
+	private sequenceExtensions : string[] = ['.png', '.jpg', '.jpeg'];
 	private displays : any[] = [];
 	private state : any = {
 		frame : 0,
@@ -131,9 +132,10 @@ class FilmOut {
 	 **/
 	async selectFile () {
 		const elem : any = $('#digital');
+		const properties : string[] = [`openFile`, `openDirectory`];
 		const options : any = {
 			title : `Select video or image sequence`,
-			properties : [`openFile`, `openDirectory`], // openDirectory, multiSelection, openFile
+			properties, // openDirectory, multiSelection, openFile
 			defaultPath: 'c:/',
 			filters : [
 				{
@@ -147,6 +149,20 @@ class FilmOut {
 		let pathStr : string;
 		let displayName : string;
     	let ext : string;
+    	const linuxMessage : string = `Do you want to use a single file (video or still image) or a folder containing an image sequence?`;
+    	const linuxChoices : string[] = ['File', 'Folder', 'Cancel'];
+    	let linuxChoice : number = 0;
+
+    	if (process.platform === 'linux') {
+    		linuxChoice = await gui.choice(linuxMessage, linuxChoices);
+    		if (linuxChoice === 0) {
+    			options.properties = ['openFile'];
+    		} else if (linuxChoice === 1) {
+    			options.properties = ['openDirectory'];
+    		} else {
+    			return false;
+    		}
+	    }
 
 		try {
 			files = await dialog.showOpenDialog(options);
@@ -195,7 +211,7 @@ class FilmOut {
 				fileList = fs.readdirSync(pathStr);
 				fileList = fileList.filter((file : string) => {
 					let ext : string = path.extname(file).toLowerCase();
-					if (this.stillExtensions.indexOf(ext)) {
+					if (this.sequenceExtensions.indexOf(ext)) {
 						return true;
 					}
 					return false;
@@ -227,7 +243,7 @@ class FilmOut {
 		};
 
 		if (filePath && filePath !== '') {
-			proceed = await gui.confirm(`Are you sure you want to use ${fileName}?`);
+			proceed = await gui.confirm(`Are you sure you want to use ${fileName}?`, 'No');
 		} else {
 			this.selectFile();
 		}
@@ -306,7 +322,7 @@ class FilmOut {
 		let proceed = false;
 
 		if (this.state.path && this.state.path !== '') {
-			proceed = await gui.confirm(`Export all frames of ${this.state.name}? This may take a while, but will allow filmout sequences to run faster.`);
+			proceed = await gui.confirm(`Export all frames of ${this.state.name}? This may take a while, but will allow filmout sequences to run faster.`, 'No');
 		}
 		
 		if (proceed) {

src/filmout/index.ts

@@ -16,6 +16,7 @@ class FilmOut {
 	private id : string = 'filmout';
 	private videoExtensions : string[] =  ['.mpg', '.mpeg', '.mov', '.mkv', '.avi', '.mp4']; 
 	private stillExtensions : string[] = ['.tif', '.tiff', '.png', '.jpg', '.jpeg', '.bmp'];
+	private sequenceExtensions : string[] = ['.png', '.jpg', '.jpeg'];
 	private gifExtension : string = '.gif';
 	public state : any = {
 		frame : 0,
@@ -356,7 +357,7 @@ class FilmOut {
 
 		frameList = frameList.filter((fileName : string) => {
 			let ext : string = extname(fileName);
-			if (this.stillExtensions.indexOf(ext) !== -1) {
+			if (this.sequenceExtensions.indexOf(ext) !== -1) {
 				return true;
 			}
 			return false;