Initial Commit. Plugin Alpha

Lottie-Export.sketchplugin/Contents/Sketch/MochaJSDelegate.js

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+//
+//  MochaJSDelegate.js
+//  MochaJSDelegate
+//
+//  Created by Matt Curtis
+//  Copyright (c) 2015. All rights reserved.
+//
+
+var MochaJSDelegate = function(selectorHandlerDict){
+	var uniqueClassName = "MochaJSDelegate_DynamicClass_" + NSUUID.UUID().UUIDString();
+
+	var delegateClassDesc = MOClassDescription.allocateDescriptionForClassWithName_superclass_(uniqueClassName, NSObject);
+
+	delegateClassDesc.registerClass();
+
+	//	Handler storage
+
+	var handlers = {};
+
+	//	Define interface
+
+	this.setHandlerForSelector = function(selectorString, func){
+		var handlerHasBeenSet = (selectorString in handlers);
+		var selector = NSSelectorFromString(selectorString);
+
+		handlers[selectorString] = func;
+
+		if(!handlerHasBeenSet){
+			/*
+				For some reason, Mocha acts weird about arguments:
+				https://github.com/logancollins/Mocha/issues/28
+
+				We have to basically create a dynamic handler with a likewise dynamic number of predefined arguments.
+			*/
+
+			var dynamicHandler = function(){
+				var functionToCall = handlers[selectorString];
+
+				if(!functionToCall) return;
+
+				return functionToCall.apply(delegateClassDesc, arguments);
+			};
+
+			var args = [], regex = /:/g;
+			while(match = regex.exec(selectorString)) args.push("arg"+args.length);
+
+			dynamicFunction = eval("(function("+args.join(",")+"){ return dynamicHandler.apply(this, arguments); })");
+
+			delegateClassDesc.addInstanceMethodWithSelector_function_(selector, dynamicFunction);
+		}
+	};
+
+	this.removeHandlerForSelector = function(selectorString){
+		delete handlers[selectorString];
+	};
+
+	this.getHandlerForSelector = function(selectorString){
+		return handlers[selectorString];
+	};
+
+	this.getAllHandlers = function(){
+		return handlers;
+	};
+
+	this.getClass = function(){
+		return NSClassFromString(uniqueClassName);
+	};
+
+	this.getClassInstance = function(){
+		return NSClassFromString(uniqueClassName).new();
+	};
+
+	//	Conveience
+
+	if(typeof selectorHandlerDict == "object"){
+		for(var selectorString in selectorHandlerDict){
+			this.setHandlerForSelector(selectorString, selectorHandlerDict[selectorString]);
+		}
+	}
+};

Lottie-Export.sketchplugin/Contents/Sketch/main.js

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+@import 'sketchLottieExport.js'
+
+// TODO: turn only layers with prefix into images
+// TODO: nested artboards (overlapping artboards) – ignore inner ones
+// TODO: Add outline option for nested/overlapping artboards
+
+// Global initalised variables from 'context'
+var selection, doc, scriptPath, scriptFolder, app
+var manifestJSON, iconImage
+
+function onSetUp(context) {
+  selection = context.selection
+  doc = context.document
+  scriptPath = context.scriptPath
+  scriptFolder = scriptPath.stringByDeletingLastPathComponent()
+  app = NSApplication.sharedApplication()
+}
+
+
+// ****************************
+//         Handlers
+// ****************************
+
+function exportSelection(context) {
+
+    var selection = context.selection;
+    var artboards = []
+    selection.forEach(function(selectedArtboard) {
+        if (selectedArtboard.isMemberOfClass(MSArtboardGroup) || selectedArtboard.isMemberOfClass(MSSymbolMaster)) {
+            artboards.push(selectedArtboard)
+        }
+    })
+    if (artboards.length > 0) {
+      exportArtboards(artboards)
+    } else {
+      alertNoArtboards(noArtboardsAlertMessage())
+    }
+}
+
+
+
+// Return the appropriate alert message for when there is no artboards
+function noArtboardsAlertMessage() {
+  return "Please select artboard(s) or symbol(s) and try again."
+}
+
+// ****************************
+//     Helper Methods
+// ****************************
+
+// Show an alert when there are no Artboards
+function alertNoArtboards(message) {
+  var alert = NSAlert.alloc().init()
+  alert.setIcon(iconImage)
+  alert.setMessageText("Lottie Export - No Artboards/Symbols")
+  alert.setInformativeText(message)
+  alert.addButtonWithTitle("Got it")
+  return alert.runModal()
+}
+
+
+// Return the version number for sketch — turned into a single integer
+// e.g. '3.8.5' => 385, '40.2' => 402
+function sketchVersionNumber() {
+  var version = NSBundle.mainBundle().objectForInfoDictionaryKey("CFBundleShortVersionString")
+  var versionNumber = version.stringByReplacingOccurrencesOfString_withString(".", "") + ""
+  while(versionNumber.length != 3) {
+    versionNumber += "0"
+  }
+  return parseInt(versionNumber)
+}
+

Lottie-Export.sketchplugin/Contents/Sketch/manifest.json

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+{
+  "name": "Lottie export",
+  "description": "Export artboards to Lottie — from the current page, all pages or current selection",
+  "author": "Brandon Withrow",
+  "homepage": "https://github.com/buba447/Lottie-Sketch-Export",
+  "version": "0.1",
+  "identifier": "com.withrow.sketch.lottie-export",
+  "appcast": "TODO",
+  "compatibleVersion": "39",
+  "bundleVersion": "1.0",
+  "commands": [
+    {
+      "name": "Export selected artboards/symbols",
+      "identifier": "selectedArtboards",
+      "shortcut": "",
+      "script": "main.js",
+      "handler": "exportSelection",
+      "icon": "icons\/selection.png",
+      "description": "Export all selected Artboards and Symbols into Lottie JSON"
+    }
+  ],
+  "menu": {
+    "title" : "Lottie export",
+    "items": [
+      "selectedArtboards"
+    ]
+  }
+}