Eigene Ansicht definieren: Aufgaben ohne Datum

/**
     * Applies the specified filter.
     *
     * @param aFilter           The filter to apply. May be one of the following types:
     *                          - a calFilterProperties object specifying the filter properties
     *                          - a String representing a previously defined filter name
     *                          - a String representing a duration offset from now
     *                          - a Function to use for the onfilter callback for a custom filter
     */
    applyFilter: function cF_applyFilter(aFilter) {
        this.mFilterProperties = null;




        if (typeof(aFilter) == "string") {
            if (aFilter in this.mDefinedFilters) {
                this.mFilterProperties = this.getDefinedFilterProperties(aFilter);
            } else {
                let dur = cal.createDuration(aFilter);
                if (dur.inSeconds > 0) {
                    this.mFilterProperties = new calFilterProperties();
                    this.mFilterProperties.start = this.mFilterProperties.FILTER_DATE_NOW;
                    this.mFilterProperties.end = aFilter;
                }
            }
        } else if (typeof(aFilter) == "object" && (aFilter instanceof calFilterProperties)) {
            this.mFilterProperties = aFilter;
        } else if (typeof(aFilter) == "function") {
            this.mFilterProperties = new calFilterProperties();
            this.mFilterProperties.onfilter = aFilter;
        } else {
            this.mFilterProperties = new calFilterProperties();
        }




        if (!this.mFilterProperties) {
            cal.WARN("[calFilter] Unable to apply filter " + aFilter);
        } else {
            this.updateFilterDates();
            // this.mFilterProperties.LOG("Applying filter:");
        }