getUpdateTriggers()

in src/deckgl-layers/layer-utils/cpu-aggregator.js [490:521]

• 23 lines of code
• 8 McCabe index (conditional complexity)

  getUpdateTriggers(props) {
    const _updateTriggers = props.updateTriggers || {};
    const updateTriggers = {};

    for (const key in this.dimensionUpdaters) {
      const {accessor, updateSteps} = this.dimensionUpdaters[key];
      // fold dimension triggers into each accessor
      updateTriggers[accessor] = {};

      updateSteps.forEach(step => {
        Object.values(step.triggers || []).forEach(({prop, updateTrigger}) => {
          if (updateTrigger) {
            // if prop is based on updateTrigger e.g. getColorValue, getColorWeight
            // and updateTriggers is passed in from layer prop
            // fold the updateTriggers into accessor
            const fromProp = _updateTriggers[updateTrigger];
            if (typeof fromProp === 'object' && !Array.isArray(fromProp)) {
              // if updateTrigger is an object spread it
              Object.assign(updateTriggers[accessor], fromProp);
            } else if (fromProp !== undefined) {
              updateTriggers[accessor][prop] = fromProp;
            }
          } else {
            // if prop is not based on updateTrigger
            updateTriggers[accessor][prop] = props[prop];
          }
        });
      });
    }

    return updateTriggers;
  }