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Unified Diff: sky/framework/sky-element.sky

Issue 999873002: Move sky-*.sky into framework/elements (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: One missing Created 5 years, 9 months ago
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Index: sky/framework/sky-element.sky
diff --git a/sky/framework/sky-element.sky b/sky/framework/sky-element.sky
deleted file mode 100644
index 5a4082316a3f08f5a716a48804a695a8c57c08f9..0000000000000000000000000000000000000000
--- a/sky/framework/sky-element.sky
+++ /dev/null
@@ -1,164 +0,0 @@
-<!--
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
--->
-<script>
-import "dart:mirrors";
-import "dart:sky";
-
-typedef dynamic _Converter(String value);
-
-final Map<String, _Converter> _kAttributeConverters = {
- 'boolean': (String value) {
- return value == 'true';
- },
- 'number': (String value) {
- try {
- return double.parse(value);
- } catch(_) {
- return 0.0;
- }
- },
- 'string': (String value) {
- return value == null ? '' : value;
- },
-};
-
-class _Registration {
- final Element template;
- final Map<String, _Converter> attributes = new Map();
-
- _Registration(this.template);
-
- void parseAttributeSpec(definition) {
- String spec = definition.getAttribute('attributes');
- if (spec == null)
- return;
-
- for (String token in spec.split(',')) {
- List<String> parts = token.split(':');
-
- if (parts.length != 2) {
- window.console.error(
- 'Invalid attribute spec "${spec}", attributes must'
- ' be {name}:{type}, where type is one of boolean, number or'
- ' string.');
- continue;
- }
-
- var name = parts[0].trim();
- var type = parts[1].trim();
-
- defineAttribute(name, type);
- }
- }
-
- void defineAttribute(String name, String type) {
- _Converter converter = _kAttributeConverters[type];
-
- if (converter == null) {
- window.console.error(
- 'Invalid attribute type "${type}", type must be one of boolean,'
- ' number or string.');
- return;
- }
-
- attributes[name] = converter;
- }
-}
-
-final Map<String, _Registration> _registery = new Map<String, _Registration>();
-
-class Tagname {
- final String name;
- const Tagname(this.name);
-}
-
-String _getTagName(Type type) {
- return reflectClass(type).metadata.firstWhere(
- (i) => i.reflectee is Tagname).reflectee.name;
-}
-
-abstract class SkyElement extends Element {
- // Override these functions to receive lifecycle notifications.
- void created() {}
- void attached() {}
- void detached() {}
- void attributeChanged(String attrName, String oldValue, String newValue) {}
- void shadowRootReady() {}
-
- String get tagName => _getTagName(runtimeType);
- _Registration _registration;
-
- SkyElement() {
- _registration = _registery[tagName];
- // Invoke attributeChanged callback when element is first created too.
- // TODO(abarth): Is this necessary? We shouldn't have any attribute yet...
- for (Attr attribute in getAttributes())
- attributeChangedCallback(attribute.name, null, attribute.value);
- }
-
- attachedCallback() {
- if (shadowRoot == null) {
- if (_registration.template != null) {
- ShadowRoot shadow = ensureShadowRoot();
- Node content = _registration.template.content;
- shadow.appendChild(document.importNode(content, deep: true));
- shadowRootReady();
- }
- }
- attached();
- }
-
- detachedCallback() {
- detached();
- }
-
- attributeChangedCallback(name, oldValue, newValue) {
- attributeChanged(name, oldValue, newValue);
-
- _Converter converter = _registration.attributes[name];
- if (converter == null)
- return;
- Symbol callback = new Symbol('${name}Changed');
- InstanceMirror mirror = reflect(this);
- if (mirror.type.instanceMembers.containsKey(callback))
- mirror.invoke(callback, [converter(oldValue), converter(newValue)]);
- }
-
- noSuchMethod(Invocation invocation) {
- String name = MirrorSystem.getName(invocation.memberName);
- if (name.endsWith('='))
- name = name.substring(0, name.length - 1);
- _Converter converter = _registration.attributes[name];
- if (converter != null) {
- if (invocation.isGetter) {
- return converter(getAttribute(name));
- } else if (invocation.isSetter) {
- setAttribute(name, invocation.positionalArguments[0].toString());
- return;
- }
- }
- return super.noSuchMethod(invocation);
- }
-}
-
-void register(Element script, Type type) {
- Element definition = script.parentNode;
-
- if (definition.tagName != 'sky-element')
- throw new UnsupportedError('register() calls must be inside a <sky-element>.');
-
- ClassMirror mirror = reflectClass(type);
- if (!mirror.isSubclassOf(reflectClass(SkyElement)))
- throw new UnsupportedError('@Tagname can only be used on descendants of SkyElement');
-
- String tagName = _getTagName(type);
- Element template = definition.querySelector('template');
-
- document.registerElement(tagName, type);
- _registery[tagName] = new _Registration(template)
- ..parseAttributeSpec(definition);
-}
-</script>
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