92 lines
2.5 KiB
JavaScript
92 lines
2.5 KiB
JavaScript
import { Session } from 'meteor/session';
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import { OHIF } from 'meteor/ohif:core';
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// @TODO: import symbols into local scope: Studies and ViewerData
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const getStudyFromStudyInstanceUid = studyInstanceUid => {
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// @TypeSafeStudies
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return Studies.findBy({ studyInstanceUid });
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};
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const getNumberOfStacks = studyInstanceUid => {
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// May not work if the Study contains non-image series?
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const study = getStudyFromStudyInstanceUid(studyInstanceUid);
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if (!study || !study.series || !study.series.length) {
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return;
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}
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return study.series.length;
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};
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const getActiveViewportIndex = () => {
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return Session.get('activeViewport');
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};
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const loadSeries = indexCalculator => {
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if(typeof indexCalculator !== 'function') {
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return;
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}
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const viewportIndex = getActiveViewportIndex();
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const contentId = Session.get('activeContentId');
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const viewerData = ViewerData[contentId].loadedSeriesData[viewportIndex];
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if(!viewerData && !viewerData.studyInstanceUid) {
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return;
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}
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const { studyInstanceUid, seriesInstanceUid, displaySetInstanceUid } = viewerData;
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if(!studyInstanceUid) {
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return;
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}
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const numberOfStacks = getNumberOfStacks(studyInstanceUid);
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if (!numberOfStacks || numberOfStacks === 1) {
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return;
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}
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const study = getStudyFromStudyInstanceUid(studyInstanceUid);
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const displaySetInstanceUids = study.series.map(series => {
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return series.displaySetInstanceUid;
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});
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const currentLoadedStackIndex = displaySetInstanceUids.indexOf(displaySetInstanceUid);
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const newStackIndex = indexCalculator(currentLoadedStackIndex, numberOfStacks);
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if (currentLoadedStackIndex === newStackIndex) {
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return;
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}
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const newDisplaySetInstanceUid = displaySetInstanceUids[newStackIndex];
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const data = {
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displaySetInstanceUid: newDisplaySetInstanceUid,
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viewportIndex,
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studyInstanceUid,
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seriesInstanceUid
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};
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OHIF.viewerbase.layoutManager.rerenderViewportWithNewDisplaySet(viewportIndex, data);
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};
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const loadPreviousSeries = () => {
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const indexCalculator = currentLoadedStackIndex => Math.max(currentLoadedStackIndex - 1, 0);
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loadSeries(indexCalculator);
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};
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const loadNextSeries = () => {
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const indexCalculator = (currentLoadedStackIndex, numberOfStacks) => Math.min(currentLoadedStackIndex + 1, numberOfStacks - 1);
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loadSeries(indexCalculator);
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};
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const seriesNavigation = {
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loadPreviousSeries,
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loadNextSeries
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};
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export { seriesNavigation };
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