1 files changed, 182 insertions, 0 deletions
diff --git a/devtools/client/inspector/animation/components/AnimationTarget.js b/devtools/client/inspector/animation/components/AnimationTarget.js
new file mode 100644
index 0000000000..2fa392b3f6
--- /dev/null
+++ b/devtools/client/inspector/animation/components/AnimationTarget.js
@@ -0,0 +1,182 @@
+/* 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 {
+  Component,
+} = require("resource://devtools/client/shared/vendor/react.js");
+const {
+  connect,
+} = require("resource://devtools/client/shared/vendor/react-redux.js");
+const PropTypes = require("resource://devtools/client/shared/vendor/react-prop-types.js");
+const dom = require("resource://devtools/client/shared/vendor/react-dom-factories.js");
+const {
+  translateNodeFrontToGrip,
+} = require("resource://devtools/client/inspector/shared/utils.js");
+
+const {
+  REPS,
+  MODE,
+} = require("resource://devtools/client/shared/components/reps/index.js");
+const { Rep } = REPS;
+const ElementNode = REPS.ElementNode;
+
+const {
+  getInspectorStr,
+} = require("resource://devtools/client/inspector/animation/utils/l10n.js");
+
+const {
+  highlightNode,
+  unhighlightNode,
+} = require("resource://devtools/client/inspector/boxmodel/actions/box-model-highlighter.js");
+
+class AnimationTarget extends Component {
+  static get propTypes() {
+    return {
+      animation: PropTypes.object.isRequired,
+      dispatch: PropTypes.func.isRequired,
+      getNodeFromActor: PropTypes.func.isRequired,
+      highlightedNode: PropTypes.string.isRequired,
+      setHighlightedNode: PropTypes.func.isRequired,
+      setSelectedNode: PropTypes.func.isRequired,
+    };
+  }
+
+  constructor(props) {
+    super(props);
+
+    this.state = {
+      nodeFront: null,
+    };
+  }
+
+  // FIXME: https://bugzilla.mozilla.org/show_bug.cgi?id=1774507
+  UNSAFE_componentWillMount() {
+    this.updateNodeFront(this.props.animation);
+  }
+
+  // FIXME: https://bugzilla.mozilla.org/show_bug.cgi?id=1774507
+  UNSAFE_componentWillReceiveProps(nextProps) {
+    if (this.props.animation.actorID !== nextProps.animation.actorID) {
+      this.updateNodeFront(nextProps.animation);
+    }
+  }
+
+  shouldComponentUpdate(nextProps, nextState) {
+    return (
+      this.state.nodeFront !== nextState.nodeFront ||
+      this.props.highlightedNode !== nextState.highlightedNode
+    );
+  }
+
+  async updateNodeFront(animation) {
+    const { getNodeFromActor } = this.props;
+
+    // Try and get it from the playerFront directly.
+    let nodeFront = animation.animationTargetNodeFront;
+
+    // Next, get it from the walkerActor if it wasn't found.
+    if (!nodeFront) {
+      try {
+        nodeFront = await getNodeFromActor(animation.actorID);
+      } catch (e) {
+        // If an error occured while getting the nodeFront and if it can't be
+        // attributed to the panel having been destroyed in the meantime, this
+        // error needs to be logged and render needs to stop.
+        console.error(e);
+        this.setState({ nodeFront: null });
+        return;
+      }
+    }
+
+    this.setState({ nodeFront });
+  }
+
+  async ensureNodeFront() {
+    if (!this.state.nodeFront.actorID) {
+      // In case of no actorID, the node front had been destroyed.
+      // This will occur when the pseudo element was re-generated.
+      await this.updateNodeFront(this.props.animation);
+    }
+  }
+
+  async highlight() {
+    await this.ensureNodeFront();
+
+    if (this.state.nodeFront) {
+      this.props.dispatch(
+        highlightNode(this.state.nodeFront, {
+          hideInfoBar: true,
+          hideGuides: true,
+        })
+      );
+    }
+  }
+
+  async select() {
+    await this.ensureNodeFront();
+
+    if (this.state.nodeFront) {
+      this.props.setSelectedNode(this.state.nodeFront);
+    }
+  }
+
+  render() {
+    const { dispatch, highlightedNode, setHighlightedNode } = this.props;
+    const { nodeFront } = this.state;
+
+    if (!nodeFront) {
+      return dom.div({
+        className: "animation-target",
+      });
+    }
+
+    const isHighlighted = nodeFront.actorID === highlightedNode;
+
+    return dom.div(
+      {
+        className: "animation-target" + (isHighlighted ? " highlighting" : ""),
+      },
+      Rep({
+        defaultRep: ElementNode,
+        mode: MODE.TINY,
+        inspectIconTitle: getInspectorStr(
+          "inspector.nodePreview.highlightNodeLabel"
+        ),
+        inspectIconClassName: "highlight-node",
+        object: translateNodeFrontToGrip(nodeFront),
+        onDOMNodeClick: () => this.select(),
+        onDOMNodeMouseOut: () => {
+          if (!isHighlighted) {
+            dispatch(unhighlightNode());
+          }
+        },
+        onDOMNodeMouseOver: () => {
+          if (!isHighlighted) {
+            this.highlight();
+          }
+        },
+        onInspectIconClick: (_, e) => {
+          e.stopPropagation();
+
+          if (!isHighlighted) {
+            // At first, hide highlighter which was created by onDOMNodeMouseOver.
+            dispatch(unhighlightNode());
+          }
+
+          setHighlightedNode(isHighlighted ? null : nodeFront);
+        },
+      })
+    );
+  }
+}
+
+const mapStateToProps = state => {
+  return {
+    highlightedNode: state.animations.highlightedNode,
+  };
+};
+
+module.exports = connect(mapStateToProps)(AnimationTarget);