com.phloxui/esm2015/lib/pipe/ColumnizePipe.pipe.js

PhloxUI Ng2+ Framework

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes} checked by tsc
 */
import { Pipe } from '@angular/core';
const /** @type {?} */ NAME = "phx_columnize";
export class ColumnizePipe {
    /**
     * @param {?} value
     * @param {?=} cols
     * @param {?=} ceiling
     * @return {?}
     */
    transform(value, cols, ceiling) {
        if (value === null || value === undefined || !Array.isArray(value)) {
            return value;
        }
        if (cols === null || cols === undefined || typeof cols !== 'number') {
            cols = 0;
        }
        if (ceiling === null || ceiling === undefined || typeof ceiling !== 'boolean') {
            ceiling = true;
        }
        if (cols <= 0) {
            // Column count <= 0 means do not perform columnization.
            return value;
        }
        let /** @type {?} */ remainder = value.length % cols;
        let /** @type {?} */ colLen = (value.length - remainder) / cols;
        if (remainder > 0 && ceiling) {
            // In ceiling mode, the last column will always be the shortest.
            // Or else, in flooring mode, the lst column will always be the longest.
            colLen++;
        }
        let /** @type {?} */ re = [];
        for (let /** @type {?} */ i = 0; i < cols; i++) {
            let /** @type {?} */ stIdx = i * colLen;
            let /** @type {?} */ enIdx = stIdx + colLen;
            if (i === cols - 1) {
                // This is the last column.
                // Always set enIdx to the end of the array.
                enIdx = value.length;
            }
            re.push(value.slice(stIdx, enIdx));
        }
        return re;
    }
}
ColumnizePipe.decorators = [
    { type: Pipe, args: [{
                name: NAME,
                pure: false
            },] },
];
function ColumnizePipe_tsickle_Closure_declarations() {
    /** @type {!Array<{type: !Function, args: (undefined|!Array<?>)}>} */
    ColumnizePipe.decorators;
    /**
     * @nocollapse
     * @type {function(): !Array<(null|{type: ?, decorators: (undefined|!Array<{type: !Function, args: (undefined|!Array<?>)}>)})>}
     */
    ColumnizePipe.ctorParameters;
}

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