1 files changed, 125 insertions, 0 deletions
diff --git a/devtools/client/webconsole/new-console-output/components/console-output.js b/devtools/client/webconsole/new-console-output/components/console-output.js
new file mode 100644
index 000000000..1ba7f8dda
--- /dev/null
+++ b/devtools/client/webconsole/new-console-output/components/console-output.js
@@ -0,0 +1,125 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+const {
+  createClass,
+  createFactory,
+  DOM: dom,
+  PropTypes
+} = require("devtools/client/shared/vendor/react");
+const ReactDOM = require("devtools/client/shared/vendor/react-dom");
+const { connect } = require("devtools/client/shared/vendor/react-redux");
+
+const {
+  getAllMessages,
+  getAllMessagesUiById,
+  getAllMessagesTableDataById,
+  getAllGroupsById,
+} = require("devtools/client/webconsole/new-console-output/selectors/messages");
+const { getScrollSetting } = require("devtools/client/webconsole/new-console-output/selectors/ui");
+const MessageContainer = createFactory(require("devtools/client/webconsole/new-console-output/components/message-container").MessageContainer);
+
+const ConsoleOutput = createClass({
+
+  displayName: "ConsoleOutput",
+
+  propTypes: {
+    messages: PropTypes.object.isRequired,
+    messagesUi: PropTypes.object.isRequired,
+    serviceContainer: PropTypes.shape({
+      attachRefToHud: PropTypes.func.isRequired,
+    }),
+    autoscroll: PropTypes.bool.isRequired,
+  },
+
+  componentDidMount() {
+    scrollToBottom(this.outputNode);
+    this.props.serviceContainer.attachRefToHud("outputScroller", this.outputNode);
+  },
+
+  componentWillUpdate(nextProps, nextState) {
+    if (!this.outputNode) {
+      return;
+    }
+
+    const outputNode = this.outputNode;
+
+    // Figure out if we are at the bottom. If so, then any new message should be scrolled
+    // into view.
+    if (this.props.autoscroll && outputNode.lastChild) {
+      this.shouldScrollBottom = isScrolledToBottom(outputNode.lastChild, outputNode);
+    }
+  },
+
+  componentDidUpdate() {
+    if (this.shouldScrollBottom) {
+      scrollToBottom(this.outputNode);
+    }
+  },
+
+  render() {
+    let {
+      dispatch,
+      autoscroll,
+      messages,
+      messagesUi,
+      messagesTableData,
+      serviceContainer,
+      groups,
+    } = this.props;
+
+    let messageNodes = messages.map((message) => {
+      const parentGroups = message.groupId ? (
+        (groups.get(message.groupId) || [])
+          .concat([message.groupId])
+      ) : [];
+
+      return (
+        MessageContainer({
+          dispatch,
+          message,
+          key: message.id,
+          serviceContainer,
+          open: messagesUi.includes(message.id),
+          tableData: messagesTableData.get(message.id),
+          autoscroll,
+          indent: parentGroups.length,
+        })
+      );
+    });
+    return (
+      dom.div({
+        className: "webconsole-output",
+        ref: node => {
+          this.outputNode = node;
+        },
+      }, messageNodes
+      )
+    );
+  }
+});
+
+function scrollToBottom(node) {
+  node.scrollTop = node.scrollHeight;
+}
+
+function isScrolledToBottom(outputNode, scrollNode) {
+  let lastNodeHeight = outputNode.lastChild ?
+                       outputNode.lastChild.clientHeight : 0;
+  return scrollNode.scrollTop + scrollNode.clientHeight >=
+         scrollNode.scrollHeight - lastNodeHeight / 2;
+}
+
+function mapStateToProps(state, props) {
+  return {
+    messages: getAllMessages(state),
+    messagesUi: getAllMessagesUiById(state),
+    messagesTableData: getAllMessagesTableDataById(state),
+    autoscroll: getScrollSetting(state),
+    groups: getAllGroupsById(state),
+  };
+}
+
+module.exports = connect(mapStateToProps)(ConsoleOutput);