Partial porting over of vector controller logic to react sdk.

src/controllers/atoms/MemberAvatar.js

@@ -0,0 +1,62 @@
+/*
+Copyright 2015 OpenMarket Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+'use strict';
+
+var React = require('react');
+var MatrixClientPeg = require('../../MatrixClientPeg');
+
+module.exports = {
+    propTypes: {
+        member: React.PropTypes.object.isRequired,
+        width: React.PropTypes.number,
+        height: React.PropTypes.number,
+        resizeMethod: React.PropTypes.string,
+    },
+
+    getDefaultProps: function() {
+        return {
+            width: 40,
+            height: 40,
+            resizeMethod: 'crop'
+        }
+    },
+
+    defaultAvatarUrl: function(member) {
+        return "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACgAAAAoCAIAAAADnC86AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAADRJREFUeNrszQENADAIACB9QjNbxSKP4eagAFnTseHFErFYLBaLxWKxWCwWi8Vi8cX4CzAABSwCRWJw31gAAAAASUVORK5CYII=";
+    },
+
+    onError: function(ev) {
+        // don't tightloop if the browser can't load a data url
+        if (ev.target.src == this.defaultAvatarUrl(this.props.member)) {
+            return;
+        }
+        this.setState({
+            imageUrl: this.defaultAvatarUrl(this.props.member)
+        });
+    },
+
+    getInitialState: function() {
+        return {
+            imageUrl: MatrixClientPeg.get().getAvatarUrlForMember(
+                this.props.member,
+                this.props.width,
+                this.props.height,
+                this.props.resizeMethod
+            )
+        };
+    }
+};