Re-add extensions as top level dir

extensions/ohif-vtk-extension/src/ConnectedVTKViewport.js

@@ -0,0 +1,61 @@
+import { connect } from 'react-redux';
+import { VTKMPRViewport } from 'react-vtkjs-viewport';
+import OHIF from 'ohif-core';
+
+const {
+  setViewportActive,
+  setViewportSpecificData,
+  clearViewportSpecificData
+} = OHIF.redux.actions;
+
+const mapStateToProps = (state, ownProps) => {
+  const activeButton = state.tools.buttons.find(tool => tool.active === true);
+  let dataFromStore;
+
+  if (state.extensions && state.extensions.vtk) {
+    dataFromStore = state.extensions.vtk;
+  }
+
+  // If this is the active viewport, enable prefetching.
+  const { viewportIndex } = ownProps; //.viewportData;
+  const isActive = viewportIndex === state.viewports.activeViewportIndex;
+  const viewportSpecificData =
+    state.viewports.viewportSpecificData[viewportIndex] || {};
+
+  const viewportLayout = state.viewports.layout.viewports[viewportIndex];
+  const pluginDetails = viewportLayout.vtk || {};
+
+  return {
+    layout: state.viewports.layout,
+    isActive,
+    ...pluginDetails,
+    activeTool: activeButton && activeButton.command,
+    ...dataFromStore,
+    enableStackPrefetch: isActive,
+  };
+};
+
+const mapDispatchToProps = (dispatch, ownProps) => {
+  const { viewportIndex } = ownProps;
+
+  return {
+    setViewportActive: () => {
+      dispatch(setViewportActive(viewportIndex));
+    },
+
+    setViewportSpecificData: data => {
+      dispatch(setViewportSpecificData(viewportIndex, data));
+    },
+
+    clearViewportSpecificData: () => {
+      dispatch(clearViewportSpecificData(viewportIndex));
+    }
+  };
+};
+
+const ConnectedVTKViewport = connect(
+  mapStateToProps,
+  //mapDispatchToProps
+)(VTKMPRViewport);
+
+export default ConnectedVTKViewport;