add build support

gulpfile.js

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+/*
+ * Copyright 2013 The Polymer Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style
+ * license that can be found in the LICENSE file.
+ */
+
+var 
+  gulp = require('gulp'),
+  concat = require('gulp-concat'),
+  uglify = require('gulp-uglify'),
+  path = require('path'),
+  uconcat = require('unique-concat'),
+  fs = require('fs')
+  ;
+
+function defineBuildTask(name, output, folderName) {
+  gulp.task(name, function() {
+    output = output || name;
+    folderName = folderName || name;
+    var manifest = './src/' + folderName + '/build.json';
+    var list = readManifest(manifest);
+    gulp.src(list)
+      .pipe(concat(output + '.js'))
+      .pipe(uglify({
+        mangle: false,
+        compress: false,
+        output: {
+          beautify: true
+        }
+      }))
+      .pipe(gulp.dest('dist/'))
+    ;
+    
+    gulp.src(list)
+      .pipe(concat(output + '.min.js'))
+      .pipe(uglify())
+      .pipe(gulp.dest('dist/'))
+    ;
+  });
+}
+
+function readJSON(filename) {
+  var blob = fs.readFileSync(filename, 'utf8');
+  return JSON.parse(blob);
+}
+
+function readManifest(filename, modules) {
+  modules = modules || [];
+  var lines = readJSON(filename);
+  var dir = path.dirname(filename);
+  lines.forEach(function(line) {
+    var fullpath = path.join(dir, line);
+    if (line.slice(-5) == '.json') {
+      // recurse
+      modules = modules.concat(readManifest(fullpath, modules));
+    } else {
+      // TODO(dfreedm): make this smarter
+      modules = uconcat(modules, [fullpath]);
+    }
+  });
+  return modules;
+}
+
+defineBuildTask('default', 'webcomponents', 'WebComponents');
+defineBuildTask('CustomElements');
+defineBuildTask('HTMLImports');
+defineBuildTask('ShadowDOM');

package.json

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+{
+  "name": "webcomponents.js-dev",
+  "version": "0.0.0",
+  "description": "webcomponents.js-dev",
+  "main": "gulpfile.js",
+  "directories": {
+    "test": "tests"
+  },
+  "dependencies": {
+    "gulp": "^3.8.8",
+    "gulp-concat": "^2.4.1",
+    "gulp-uglify": "^1.0.1",
+    "unique-concat": "^0.2.2"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Polymer/webcomponents.js-dev.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/Polymer/webcomponents.js-dev/issues"
+  },
+  "homepage": "https://github.com/Polymer/webcomponents.js-dev"
+}

src/CustomElements/build.json

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+[
+  "../WeakMap/WeakMap.js",
+  "../MutationObserver/MutationObserver.js",
+  "base.js",
+  "traverse.js",
+  "observe.js",
+  "upgrade.js",
+  "register.js",
+  "boot.js"
+]

src/HTMLImports/build.json

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+[
+  "../WeakMap/WeakMap.js",
+  "../MutationObserver/MutationObserver.js",
+  "base.js",
+  "path.js",
+  "xhr.js",
+  "Loader.js",
+  "Observer.js",
+  "parser.js",
+  "importer.js",
+  "dynamic.js",
+  "boot.js"
+]

src/ShadowDOM/build.json

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+[
+  "../WeakMap/WeakMap.js",
+  "wrappers.js",
+  "ArraySlice.js",
+  "microtask.js",
+  "MutationObserver.js",
+  "TreeScope.js",
+  "wrappers/events.js",
+  "wrappers/TouchEvent.js",
+  "wrappers/NodeList.js",
+  "wrappers/HTMLCollection.js",
+  "wrappers/Node.js",
+  "querySelector.js",
+  "wrappers/node-interfaces.js",
+  "wrappers/CharacterData.js",
+  "wrappers/Text.js",
+  "wrappers/DOMTokenList.js",
+  "wrappers/Element.js",
+  "wrappers/HTMLElement.js",
+  "wrappers/HTMLCanvasElement.js",
+  "wrappers/HTMLContentElement.js",
+  "wrappers/HTMLFormElement.js",
+  "wrappers/HTMLImageElement.js",
+  "wrappers/HTMLShadowElement.js",
+  "wrappers/HTMLTemplateElement.js",
+  "wrappers/HTMLMediaElement.js",
+  "wrappers/HTMLAudioElement.js",
+  "wrappers/HTMLOptionElement.js",
+  "wrappers/HTMLSelectElement.js",
+  "wrappers/HTMLTableElement.js",
+  "wrappers/HTMLTableSectionElement.js",
+  "wrappers/HTMLTableRowElement.js",
+  "wrappers/HTMLUnknownElement.js",
+  "wrappers/SVGElement.js",
+  "wrappers/SVGUseElement.js",
+  "wrappers/SVGElementInstance.js",
+  "wrappers/CanvasRenderingContext2D.js",
+  "wrappers/WebGLRenderingContext.js",
+  "wrappers/Range.js",
+  "wrappers/generic.js",
+  "wrappers/ShadowRoot.js",
+  "ShadowRenderer.js",
+  "wrappers/elements-with-form-property.js",
+  "wrappers/Selection.js",
+  "wrappers/Document.js",
+  "wrappers/Window.js",
+  "wrappers/DataTransfer.js",
+  "wrappers/FormData.js",
+  "wrappers/XMLHttpRequest.js",
+  "wrappers/override-constructors.js"
+]

src/WebComponents/build.json

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+[
+  "build/boot.js",
+  "build/if-poly.js",
+  "../ShadowDOM/build.json",
+  "../ShadowCss/ShadowCss.js",
+  "build/end-if.js",
+  "shadowdom.js",
+  "../HTMLImports/build.json",
+  "../CustomElements/build.json",
+  "lang.js",
+  "dom.js",
+  "unresolved.js"
+]

src/WebComponents/build/boot.js

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+/**
+ * Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+ * This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+ * The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+ * The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+ * Code distributed by Google as part of the polymer project is also
+ * subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+ */
+
+window.WebComponents = window.WebComponents || {};
+
+// process flags
+(function(scope){
+  
+  // import
+  var flags = scope.flags || {};
+  
+  var file = 'webcomponents.js';
+  var script = document.querySelector('script[src*="' + file + '"]');
+
+  // Flags. Convert url arguments to flags
+  var flags = {};
+  if (!flags.noOpts) {
+    // from url
+    location.search.slice(1).split('&').forEach(function(o) {
+      o = o.split('=');
+      o[0] && (flags[o[0]] = o[1] || true);
+    });
+    // from script
+    for (var i=0, a; (a=script.attributes[i]); i++) {
+      if (a.name !== 'src') {
+        flags[a.name] = a.value || true;
+      }
+    }
+    // log flags
+    if (flags.log) {
+      var parts = flags.log.split(',');
+      flags.log = {};
+      parts.forEach(function(f) {
+        flags.log[f] = true;
+      });
+    } else {
+      flags.log = {};
+    }
+  }
+
+  // Determine default settings.
+  // If any of these flags match 'native', then force native ShadowDOM; any
+  // other truthy value, or failure to detect native
+  // ShadowDOM, results in polyfill 
+  flags.shadow = (flags.shadow || flags.shadowdom || flags.polyfill);
+  if (flags.shadow === 'native') {
+    flags.shadow = false;
+  } else {
+    flags.shadow = flags.shadow || !HTMLElement.prototype.createShadowRoot;
+  }
+
+  if (flags.shadow && document.querySelectorAll('script').length > 1) {
+    console.log('Warning: platform.js is not the first script on the page. ' +
+        'See http://www.polymer-project.org/docs/start/platform.html#setup ' +
+        'for details.');
+  }
+
+  // forward flags
+  if (flags.register) {
+    window.CustomElements = window.CustomElements || {flags: {}};
+    window.CustomElements.flags.register = flags.register;
+  }
+
+  // export
+  scope.flags = flags;
+})(WebComponents);

src/WebComponents/build/build.json

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+[
+  "shadowdom.js",
+  "lang.js",
+  "dom.js",
+  "unresolved.js"
+]

src/WebComponents/build/else.js

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+} else {

src/WebComponents/build/end-if.js

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+}

src/WebComponents/build/if-poly.js

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+// select ShadowDOM impl
+if (WebComponents.flags.shadow) {