Saving and Recalling Window Positions With Automator

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// Set this to be the folder where you save the files. Remember to create it!
var filePath = '/users/macmost/Window Positions/';

var app = Application.currentApplication();
app.includeStandardAdditions = true;

// get the list of files in the special folder
var fileList = Application("System Events").folders.byName(filePath).diskItems.name();
if (fileList.length > 0) {

	// choose a file
	var whichFile = app.chooseFromList(fileList, {withPrompt: "Which Positions?", defaultItems: fileList[0], cancelButtonName: 'Save/Cancel'});
}

if (!whichFile) {
	// hit the save/cancel button, so save
	saveWindowPositions();
} else {
	// otherwise a file was selected, so load
	loadWindowPositions(whichFile[0]);
}



function saveWindowPositions() {

	// prompt for the filename
	try {
		var prompt = app.displayDialog('Save positions under what name?', {defaultAnswer: "My Window Positions"});
	} catch (e) {
		// do nothing if cancelled
		return;
	}
	var positionsName = prompt.textReturned;
	
	var savedPositions = [];
	
	// loop through all applications
	var appList = Application("System Events").applicationProcesses.whose({visible: true}).name();

	for (appNum in appList) {
		var appName = appList[appNum];
		
		// loop through all windows for application
		var windowList = Application(appName).windows;
		
		for (windowNum in windowList) {
			var whichWindow = windowList[windowNum];
			
			// put the app name, window number and location in the list
			savedPositions.push({app: appName, window: windowNum, bounds: whichWindow.bounds()});
		}
	}
	
	// open a new file, overwrite if needed
	var file = app.openForAccess(filePath + positionsName, { writePermission: true });
	app.setEof(file, { to: 0 });
	
	// write data to file
	app.write(JSON.stringify(savedPositions), {to: file});
	app.closeAccess(file);
}



function loadWindowPositions(filename) {
	
	// get saved positions from file
	var fileText = app.read(Path(filePath + filename));
	var savedPositions = JSON.parse(fileText);

	// loop through windows in list
	for (windowNum in savedPositions) {
		var windowData = savedPositions[windowNum];
		
		// if there is a window for that app, then set its positions
		if (windowData.window < Application(windowData.app).windows.length) {
			Application(windowData.app).windows[windowData.window].bounds = windowData.bounds;
		}
	}
}