Merge pull request #2072 from Licen-it/master

fix(TableModel): setting totalDataLength to 0 is no longer ignoring it and selectAll is no longer selecting empty row

Author: zvonimirfras

src/table/table-model.class.ts

@@ -156,7 +156,7 @@ export class TableModel implements PaginationModel {
 	 */
 	set totalDataLength(length: number) {
 		// if this function is called without a parameter we need to set to null to avoid having undefined != null
-		this._totalDataLength = length || null;
+		this._totalDataLength = isNaN(length) ? null : length;
 	}
 
 	/**
@@ -621,7 +621,7 @@ export class TableModel implements PaginationModel {
 	 * @param value state to set all rows to. Defaults to `true`
 	 */
 	selectAll(value = true) {
-		if (this.data.length >= 1) {
+		if (this.data.length >= 1 && this.data[0].length >= 1) {
 			for (let i = 0; i < this.rowsSelected.length; i++) {
 				this.selectRow(i, value);
 			}